1 /* BFD semi-generic back-end for a.out binaries.
2 Copyright 1990, 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
3 Written by Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
28 BFD supports a number of different flavours of a.out format,
29 though the major differences are only the sizes of the
30 structures on disk, and the shape of the relocation
33 The support is split into a basic support file @file{aoutx.h}
34 and other files which derive functions from the base. One
35 derivation file is @file{aoutf1.h} (for a.out flavour 1), and
36 adds to the basic a.out functions support for sun3, sun4, 386
37 and 29k a.out files, to create a target jump vector for a
40 This information is further split out into more specific files
41 for each machine, including @file{sunos.c} for sun3 and sun4,
42 @file{newsos3.c} for the Sony NEWS, and @file{demo64.c} for a
43 demonstration of a 64 bit a.out format.
45 The base file @file{aoutx.h} defines general mechanisms for
46 reading and writing records to and from disk and various
47 other methods which BFD requires. It is included by
48 @file{aout32.c} and @file{aout64.c} to form the names
49 <<aout_32_swap_exec_header_in>>, <<aout_64_swap_exec_header_in>>, etc.
51 As an example, this is what goes on to make the back end for a
52 sun4, from @file{aout32.c}:
54 | #define ARCH_SIZE 32
60 | aout_32_canonicalize_reloc
61 | aout_32_find_nearest_line
63 | aout_32_get_reloc_upper_bound
68 | #define TARGET_NAME "a.out-sunos-big"
69 | #define VECNAME sunos_big_vec
72 requires all the names from @file{aout32.c}, and produces the jump vector
76 The file @file{host-aout.c} is a special case. It is for a large set
77 of hosts that use ``more or less standard'' a.out files, and
78 for which cross-debugging is not interesting. It uses the
79 standard 32-bit a.out support routines, but determines the
80 file offsets and addresses of the text, data, and BSS
81 sections, the machine architecture and machine type, and the
82 entry point address, in a host-dependent manner. Once these
83 values have been determined, generic code is used to handle
86 When porting it to run on a new system, you must supply:
90 | HOST_MACHINE_ARCH (optional)
91 | HOST_MACHINE_MACHINE (optional)
92 | HOST_TEXT_START_ADDR
95 in the file @file{../include/sys/h-@var{XXX}.h} (for your host). These
96 values, plus the structures and macros defined in @file{a.out.h} on
97 your host system, will produce a BFD target that will access
98 ordinary a.out files on your host. To configure a new machine
99 to use @file{host-aout.c}, specify:
101 | TDEFAULTS = -DDEFAULT_VECTOR=host_aout_big_vec
102 | TDEPFILES= host-aout.o trad-core.o
104 in the @file{config/@var{XXX}.mt} file, and modify @file{configure.in}
106 @file{@var{XXX}.mt} file (by setting "<<bfd_target=XXX>>") when your
107 configuration is selected.
112 * Any BFD with D_PAGED set is ZMAGIC, and vice versa.
113 Doesn't matter what the setting of WP_TEXT is on output, but it'll
115 * Any BFD with D_PAGED clear and WP_TEXT set is NMAGIC.
116 * Any BFD with both flags clear is OMAGIC.
117 (Just want to make these explicit, so the conditions tested in this
118 file make sense if you're more familiar with a.out than with BFD.) */
121 #define KEEPITTYPE int
123 #include <string.h> /* For strchr and friends */
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 *));
145 The file @file{aoutx.h} provides for both the @emph{standard}
146 and @emph{extended} forms of a.out relocation records.
148 The standard records contain only an
149 address, a symbol index, and a type field. The extended records
150 (used on 29ks and sparcs) also have a full integer for an
154 #ifndef CTOR_TABLE_RELOC_HOWTO
155 #define CTOR_TABLE_RELOC_IDX 2
156 #define CTOR_TABLE_RELOC_HOWTO(BFD) ((obj_reloc_entry_size(BFD) == RELOC_EXT_SIZE \
157 ? howto_table_ext : howto_table_std) \
158 + CTOR_TABLE_RELOC_IDX)
161 #ifndef MY_swap_std_reloc_in
162 #define MY_swap_std_reloc_in NAME(aout,swap_std_reloc_in)
165 #ifndef MY_swap_std_reloc_out
166 #define MY_swap_std_reloc_out NAME(aout,swap_std_reloc_out)
169 #define howto_table_ext NAME(aout,ext_howto_table)
170 #define howto_table_std NAME(aout,std_howto_table)
172 reloc_howto_type howto_table_ext[] =
174 /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone */
175 HOWTO(RELOC_8, 0, 0, 8, false, 0, complain_overflow_bitfield,0,"8", false, 0,0x000000ff, false),
176 HOWTO(RELOC_16, 0, 1, 16, false, 0, complain_overflow_bitfield,0,"16", false, 0,0x0000ffff, false),
177 HOWTO(RELOC_32, 0, 2, 32, false, 0, complain_overflow_bitfield,0,"32", false, 0,0xffffffff, false),
178 HOWTO(RELOC_DISP8, 0, 0, 8, true, 0, complain_overflow_signed,0,"DISP8", false, 0,0x000000ff, false),
179 HOWTO(RELOC_DISP16, 0, 1, 16, true, 0, complain_overflow_signed,0,"DISP16", false, 0,0x0000ffff, false),
180 HOWTO(RELOC_DISP32, 0, 2, 32, true, 0, complain_overflow_signed,0,"DISP32", false, 0,0xffffffff, false),
181 HOWTO(RELOC_WDISP30,2, 2, 30, true, 0, complain_overflow_signed,0,"WDISP30", false, 0,0x3fffffff, false),
182 HOWTO(RELOC_WDISP22,2, 2, 22, true, 0, complain_overflow_signed,0,"WDISP22", false, 0,0x003fffff, false),
183 HOWTO(RELOC_HI22, 10, 2, 22, false, 0, complain_overflow_bitfield,0,"HI22", false, 0,0x003fffff, false),
184 HOWTO(RELOC_22, 0, 2, 22, false, 0, complain_overflow_bitfield,0,"22", false, 0,0x003fffff, false),
185 HOWTO(RELOC_13, 0, 2, 13, false, 0, complain_overflow_bitfield,0,"13", false, 0,0x00001fff, false),
186 HOWTO(RELOC_LO10, 0, 2, 10, false, 0, complain_overflow_dont,0,"LO10", false, 0,0x000003ff, false),
187 HOWTO(RELOC_SFA_BASE,0, 2, 32, false, 0, complain_overflow_bitfield,0,"SFA_BASE", false, 0,0xffffffff, false),
188 HOWTO(RELOC_SFA_OFF13,0,2, 32, false, 0, complain_overflow_bitfield,0,"SFA_OFF13",false, 0,0xffffffff, false),
189 HOWTO(RELOC_BASE10, 0, 2, 16, false, 0, complain_overflow_bitfield,0,"BASE10", false, 0,0x0000ffff, false),
190 HOWTO(RELOC_BASE13, 0, 2, 13, false, 0, complain_overflow_bitfield,0,"BASE13", false, 0,0x00001fff, false),
191 HOWTO(RELOC_BASE22, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"BASE22", false, 0,0x00000000, false),
192 HOWTO(RELOC_PC10, 0, 2, 10, false, 0, complain_overflow_bitfield,0,"PC10", false, 0,0x000003ff, false),
193 HOWTO(RELOC_PC22, 0, 2, 22, false, 0, complain_overflow_bitfield,0,"PC22", false, 0,0x003fffff, false),
194 HOWTO(RELOC_JMP_TBL,0, 2, 32, false, 0, complain_overflow_bitfield,0,"JMP_TBL", false, 0,0xffffffff, false),
195 HOWTO(RELOC_SEGOFF16,0, 2, 0, false, 0, complain_overflow_bitfield,0,"SEGOFF16", false, 0,0x00000000, false),
196 HOWTO(RELOC_GLOB_DAT,0, 2, 0, false, 0, complain_overflow_bitfield,0,"GLOB_DAT", false, 0,0x00000000, false),
197 HOWTO(RELOC_JMP_SLOT,0, 2, 0, false, 0, complain_overflow_bitfield,0,"JMP_SLOT", false, 0,0x00000000, false),
198 HOWTO(RELOC_RELATIVE,0, 2, 0, false, 0, complain_overflow_bitfield,0,"RELATIVE", false, 0,0x00000000, false),
201 /* Convert standard reloc records to "arelent" format (incl byte swap). */
203 reloc_howto_type howto_table_std[] = {
204 /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone */
205 HOWTO( 0, 0, 0, 8, false, 0, complain_overflow_bitfield,0,"8", true, 0x000000ff,0x000000ff, false),
206 HOWTO( 1, 0, 1, 16, false, 0, complain_overflow_bitfield,0,"16", true, 0x0000ffff,0x0000ffff, false),
207 HOWTO( 2, 0, 2, 32, false, 0, complain_overflow_bitfield,0,"32", true, 0xffffffff,0xffffffff, false),
208 HOWTO( 3, 0, 4, 64, false, 0, complain_overflow_bitfield,0,"64", true, 0xdeaddead,0xdeaddead, false),
209 HOWTO( 4, 0, 0, 8, true, 0, complain_overflow_signed, 0,"DISP8", true, 0x000000ff,0x000000ff, false),
210 HOWTO( 5, 0, 1, 16, true, 0, complain_overflow_signed, 0,"DISP16", true, 0x0000ffff,0x0000ffff, false),
211 HOWTO( 6, 0, 2, 32, true, 0, complain_overflow_signed, 0,"DISP32", true, 0xffffffff,0xffffffff, false),
212 HOWTO( 7, 0, 4, 64, true, 0, complain_overflow_signed, 0,"DISP64", true, 0xfeedface,0xfeedface, false),
213 HOWTO( 8, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"GOT_REL", false, 0,0x00000000, false),
214 HOWTO( 9, 0, 1, 16, false, 0, complain_overflow_bitfield,0,"BASE16", false,0xffffffff,0xffffffff, false),
215 HOWTO(10, 0, 2, 32, false, 0, complain_overflow_bitfield,0,"BASE32", false,0xffffffff,0xffffffff, false),
221 HOWTO(16, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"JMP_TABLE", false, 0,0x00000000, false),
229 { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, { -1 },
230 HOWTO(32, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"RELATIVE", false, 0,0x00000000, false),
238 HOWTO(40, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"BASEREL", false, 0,0x00000000, false),
241 #define TABLE_SIZE(TABLE) (sizeof(TABLE)/sizeof(TABLE[0]))
243 CONST struct reloc_howto_struct *
244 NAME(aout,reloc_type_lookup) (abfd,code)
246 bfd_reloc_code_real_type code;
248 #define EXT(i,j) case i: return &howto_table_ext[j]
249 #define STD(i,j) case i: return &howto_table_std[j]
250 int ext = obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE;
251 if (code == BFD_RELOC_CTOR)
252 switch (bfd_get_arch_info (abfd)->bits_per_address)
264 EXT (BFD_RELOC_32, 2);
265 EXT (BFD_RELOC_HI22, 8);
266 EXT (BFD_RELOC_LO10, 11);
267 EXT (BFD_RELOC_32_PCREL_S2, 6);
268 EXT (BFD_RELOC_SPARC_WDISP22, 7);
269 EXT (BFD_RELOC_SPARC13, 10);
270 EXT (BFD_RELOC_SPARC_BASE13, 15);
271 default: return (CONST struct reloc_howto_struct *) 0;
277 STD (BFD_RELOC_16, 1);
278 STD (BFD_RELOC_32, 2);
279 STD (BFD_RELOC_8_PCREL, 4);
280 STD (BFD_RELOC_16_PCREL, 5);
281 STD (BFD_RELOC_32_PCREL, 6);
282 STD (BFD_RELOC_16_BASEREL, 9);
283 STD (BFD_RELOC_32_BASEREL, 10);
284 default: return (CONST struct reloc_howto_struct *) 0;
290 Internal entry points
293 @file{aoutx.h} exports several routines for accessing the
294 contents of an a.out file, which are gathered and exported in
295 turn by various format specific files (eg sunos.c).
301 aout_@var{size}_swap_exec_header_in
304 void aout_@var{size}_swap_exec_header_in,
306 struct external_exec *raw_bytes,
307 struct internal_exec *execp);
310 Swap the information in an executable header @var{raw_bytes} taken
311 from a raw byte stream memory image into the internal exec header
312 structure @var{execp}.
315 #ifndef NAME_swap_exec_header_in
317 NAME(aout,swap_exec_header_in) (abfd, raw_bytes, execp)
319 struct external_exec *raw_bytes;
320 struct internal_exec *execp;
322 struct external_exec *bytes = (struct external_exec *)raw_bytes;
324 /* The internal_exec structure has some fields that are unused in this
325 configuration (IE for i960), so ensure that all such uninitialized
326 fields are zero'd out. There are places where two of these structs
327 are memcmp'd, and thus the contents do matter. */
328 memset ((PTR) execp, 0, sizeof (struct internal_exec));
329 /* Now fill in fields in the execp, from the bytes in the raw data. */
330 execp->a_info = bfd_h_get_32 (abfd, bytes->e_info);
331 execp->a_text = GET_WORD (abfd, bytes->e_text);
332 execp->a_data = GET_WORD (abfd, bytes->e_data);
333 execp->a_bss = GET_WORD (abfd, bytes->e_bss);
334 execp->a_syms = GET_WORD (abfd, bytes->e_syms);
335 execp->a_entry = GET_WORD (abfd, bytes->e_entry);
336 execp->a_trsize = GET_WORD (abfd, bytes->e_trsize);
337 execp->a_drsize = GET_WORD (abfd, bytes->e_drsize);
339 #define NAME_swap_exec_header_in NAME(aout,swap_exec_header_in)
344 aout_@var{size}_swap_exec_header_out
347 void aout_@var{size}_swap_exec_header_out
349 struct internal_exec *execp,
350 struct external_exec *raw_bytes);
353 Swap the information in an internal exec header structure
354 @var{execp} into the buffer @var{raw_bytes} ready for writing to disk.
357 NAME(aout,swap_exec_header_out) (abfd, execp, raw_bytes)
359 struct internal_exec *execp;
360 struct external_exec *raw_bytes;
362 struct external_exec *bytes = (struct external_exec *)raw_bytes;
364 /* Now fill in fields in the raw data, from the fields in the exec struct. */
365 bfd_h_put_32 (abfd, execp->a_info , bytes->e_info);
366 PUT_WORD (abfd, execp->a_text , bytes->e_text);
367 PUT_WORD (abfd, execp->a_data , bytes->e_data);
368 PUT_WORD (abfd, execp->a_bss , bytes->e_bss);
369 PUT_WORD (abfd, execp->a_syms , bytes->e_syms);
370 PUT_WORD (abfd, execp->a_entry , bytes->e_entry);
371 PUT_WORD (abfd, execp->a_trsize, bytes->e_trsize);
372 PUT_WORD (abfd, execp->a_drsize, bytes->e_drsize);
375 /* Make all the section for an a.out file. */
378 NAME(aout,make_sections) (abfd)
381 if (obj_textsec (abfd) == (asection *) NULL
382 && bfd_make_section (abfd, ".text") == (asection *) NULL)
384 if (obj_datasec (abfd) == (asection *) NULL
385 && bfd_make_section (abfd, ".data") == (asection *) NULL)
387 if (obj_bsssec (abfd) == (asection *) NULL
388 && bfd_make_section (abfd, ".bss") == (asection *) NULL)
395 aout_@var{size}_some_aout_object_p
398 const bfd_target *aout_@var{size}_some_aout_object_p
400 const bfd_target *(*callback_to_real_object_p)());
403 Some a.out variant thinks that the file open in @var{abfd}
404 checking is an a.out file. Do some more checking, and set up
405 for access if it really is. Call back to the calling
406 environment's "finish up" function just before returning, to
407 handle any last-minute setup.
411 NAME(aout,some_aout_object_p) (abfd, execp, callback_to_real_object_p)
413 struct internal_exec *execp;
414 const bfd_target *(*callback_to_real_object_p) PARAMS ((bfd *));
416 struct aout_data_struct *rawptr, *oldrawptr;
417 const bfd_target *result;
419 rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, sizeof (struct aout_data_struct ));
420 if (rawptr == NULL) {
421 bfd_set_error (bfd_error_no_memory);
425 oldrawptr = abfd->tdata.aout_data;
426 abfd->tdata.aout_data = rawptr;
428 /* Copy the contents of the old tdata struct.
429 In particular, we want the subformat, since for hpux it was set in
430 hp300hpux.c:swap_exec_header_in and will be used in
431 hp300hpux.c:callback. */
432 if (oldrawptr != NULL)
433 *abfd->tdata.aout_data = *oldrawptr;
435 abfd->tdata.aout_data->a.hdr = &rawptr->e;
436 *(abfd->tdata.aout_data->a.hdr) = *execp; /* Copy in the internal_exec struct */
437 execp = abfd->tdata.aout_data->a.hdr;
439 /* Set the file flags */
440 abfd->flags = NO_FLAGS;
441 if (execp->a_drsize || execp->a_trsize)
442 abfd->flags |= HAS_RELOC;
443 /* Setting of EXEC_P has been deferred to the bottom of this function */
445 abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS;
446 if (N_DYNAMIC(*execp))
447 abfd->flags |= DYNAMIC;
449 if (N_MAGIC (*execp) == ZMAGIC)
451 abfd->flags |= D_PAGED | WP_TEXT;
452 adata (abfd).magic = z_magic;
454 else if (N_MAGIC (*execp) == QMAGIC)
456 abfd->flags |= D_PAGED | WP_TEXT;
457 adata (abfd).magic = z_magic;
458 adata (abfd).subformat = q_magic_format;
460 else if (N_MAGIC (*execp) == NMAGIC)
462 abfd->flags |= WP_TEXT;
463 adata (abfd).magic = n_magic;
465 else if (N_MAGIC (*execp) == OMAGIC
466 || N_MAGIC (*execp) == BMAGIC)
467 adata (abfd).magic = o_magic;
470 /* Should have been checked with N_BADMAG before this routine
475 bfd_get_start_address (abfd) = execp->a_entry;
477 obj_aout_symbols (abfd) = (aout_symbol_type *)NULL;
478 bfd_get_symcount (abfd) = execp->a_syms / sizeof (struct external_nlist);
480 /* The default relocation entry size is that of traditional V7 Unix. */
481 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
483 /* The default symbol entry size is that of traditional Unix. */
484 obj_symbol_entry_size (abfd) = EXTERNAL_NLIST_SIZE;
486 obj_aout_external_syms (abfd) = NULL;
487 obj_aout_external_strings (abfd) = NULL;
488 obj_aout_sym_hashes (abfd) = NULL;
490 if (! NAME(aout,make_sections) (abfd))
493 obj_datasec (abfd)->_raw_size = execp->a_data;
494 obj_bsssec (abfd)->_raw_size = execp->a_bss;
496 obj_textsec (abfd)->flags =
497 (execp->a_trsize != 0
498 ? (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_RELOC)
499 : (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS));
500 obj_datasec (abfd)->flags =
501 (execp->a_drsize != 0
502 ? (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS | SEC_RELOC)
503 : (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS));
504 obj_bsssec (abfd)->flags = SEC_ALLOC;
506 #ifdef THIS_IS_ONLY_DOCUMENTATION
507 /* The common code can't fill in these things because they depend
508 on either the start address of the text segment, the rounding
509 up of virtual addresses between segments, or the starting file
510 position of the text segment -- all of which varies among different
511 versions of a.out. */
513 /* Call back to the format-dependent code to fill in the rest of the
514 fields and do any further cleanup. Things that should be filled
515 in by the callback: */
517 struct exec *execp = exec_hdr (abfd);
519 obj_textsec (abfd)->size = N_TXTSIZE(*execp);
520 obj_textsec (abfd)->raw_size = N_TXTSIZE(*execp);
521 /* data and bss are already filled in since they're so standard */
523 /* The virtual memory addresses of the sections */
524 obj_textsec (abfd)->vma = N_TXTADDR(*execp);
525 obj_datasec (abfd)->vma = N_DATADDR(*execp);
526 obj_bsssec (abfd)->vma = N_BSSADDR(*execp);
528 /* The file offsets of the sections */
529 obj_textsec (abfd)->filepos = N_TXTOFF(*execp);
530 obj_datasec (abfd)->filepos = N_DATOFF(*execp);
532 /* The file offsets of the relocation info */
533 obj_textsec (abfd)->rel_filepos = N_TRELOFF(*execp);
534 obj_datasec (abfd)->rel_filepos = N_DRELOFF(*execp);
536 /* The file offsets of the string table and symbol table. */
537 obj_str_filepos (abfd) = N_STROFF (*execp);
538 obj_sym_filepos (abfd) = N_SYMOFF (*execp);
540 /* Determine the architecture and machine type of the object file. */
541 switch (N_MACHTYPE (*exec_hdr (abfd))) {
543 abfd->obj_arch = bfd_arch_obscure;
547 adata(abfd)->page_size = PAGE_SIZE;
548 adata(abfd)->segment_size = SEGMENT_SIZE;
549 adata(abfd)->exec_bytes_size = EXEC_BYTES_SIZE;
553 /* The architecture is encoded in various ways in various a.out variants,
554 or is not encoded at all in some of them. The relocation size depends
555 on the architecture and the a.out variant. Finally, the return value
556 is the bfd_target vector in use. If an error occurs, return zero and
557 set bfd_error to the appropriate error code.
559 Formats such as b.out, which have additional fields in the a.out
560 header, should cope with them in this callback as well. */
561 #endif /* DOCUMENTATION */
563 result = (*callback_to_real_object_p)(abfd);
566 /* The original heuristic doesn't work in some important cases. The
567 * a.out file has no information about the text start address. For
568 * files (like kernels) linked to non-standard addresses (ld -Ttext
569 * nnn) the entry point may not be between the default text start
570 * (obj_textsec(abfd)->vma) and (obj_textsec(abfd)->vma) + text size
571 * This is not just a mach issue. Many kernels are loaded at non
572 * standard addresses.
575 struct stat stat_buf;
577 && (fstat(fileno((FILE *) (abfd->iostream)), &stat_buf) == 0)
578 && ((stat_buf.st_mode & 0111) != 0))
579 abfd->flags |= EXEC_P;
581 #else /* ! defined (STAT_FOR_EXEC) */
582 /* Now that the segment addresses have been worked out, take a better
583 guess at whether the file is executable. If the entry point
584 is within the text segment, assume it is. (This makes files
585 executable even if their entry point address is 0, as long as
586 their text starts at zero.)
588 At some point we should probably break down and stat the file and
589 declare it executable if (one of) its 'x' bits are on... */
590 if ((execp->a_entry >= obj_textsec(abfd)->vma) &&
591 (execp->a_entry < obj_textsec(abfd)->vma + obj_textsec(abfd)->_raw_size))
592 abfd->flags |= EXEC_P;
593 #endif /* ! defined (STAT_FOR_EXEC) */
596 #if 0 /* These should be set correctly anyways. */
597 abfd->sections = obj_textsec (abfd);
598 obj_textsec (abfd)->next = obj_datasec (abfd);
599 obj_datasec (abfd)->next = obj_bsssec (abfd);
605 abfd->tdata.aout_data = oldrawptr;
612 aout_@var{size}_mkobject
615 boolean aout_@var{size}_mkobject, (bfd *abfd);
618 Initialize BFD @var{abfd} for use with a.out files.
622 NAME(aout,mkobject) (abfd)
625 struct aout_data_struct *rawptr;
627 bfd_set_error (bfd_error_system_call);
629 /* Use an intermediate variable for clarity */
630 rawptr = (struct aout_data_struct *)bfd_zalloc (abfd, sizeof (struct aout_data_struct ));
632 if (rawptr == NULL) {
633 bfd_set_error (bfd_error_no_memory);
637 abfd->tdata.aout_data = rawptr;
638 exec_hdr (abfd) = &(rawptr->e);
640 obj_textsec (abfd) = (asection *)NULL;
641 obj_datasec (abfd) = (asection *)NULL;
642 obj_bsssec (abfd) = (asection *)NULL;
650 aout_@var{size}_machine_type
653 enum machine_type aout_@var{size}_machine_type
654 (enum bfd_architecture arch,
655 unsigned long machine));
658 Keep track of machine architecture and machine type for
659 a.out's. Return the <<machine_type>> for a particular
660 architecture and machine, or <<M_UNKNOWN>> if that exact architecture
661 and machine can't be represented in a.out format.
663 If the architecture is understood, machine type 0 (default)
664 is always understood.
668 NAME(aout,machine_type) (arch, machine, unknown)
669 enum bfd_architecture arch;
670 unsigned long machine;
673 enum machine_type arch_flags;
675 arch_flags = M_UNKNOWN;
680 if (machine == 0) arch_flags = M_SPARC;
685 case 0: arch_flags = M_68010; break;
686 case 68000: arch_flags = M_UNKNOWN; *unknown = false; break;
687 case 68010: arch_flags = M_68010; break;
688 case 68020: arch_flags = M_68020; break;
689 default: arch_flags = M_UNKNOWN; break;
694 if (machine == 0) arch_flags = M_386;
698 if (machine == 0) arch_flags = M_29K;
705 case 3000: arch_flags = M_MIPS1; break;
708 case 6000: arch_flags = M_MIPS2; break;
709 default: arch_flags = M_UNKNOWN; break;
715 case 0: arch_flags = M_NS32532; break;
716 case 32032: arch_flags = M_NS32032; break;
717 case 32532: arch_flags = M_NS32532; break;
718 default: arch_flags = M_UNKNOWN; break;
723 arch_flags = M_UNKNOWN;
726 if (arch_flags != M_UNKNOWN)
735 aout_@var{size}_set_arch_mach
738 boolean aout_@var{size}_set_arch_mach,
740 enum bfd_architecture arch,
741 unsigned long machine));
744 Set the architecture and the machine of the BFD @var{abfd} to the
745 values @var{arch} and @var{machine}. Verify that @var{abfd}'s format
746 can support the architecture required.
750 NAME(aout,set_arch_mach) (abfd, arch, machine)
752 enum bfd_architecture arch;
753 unsigned long machine;
755 if (! bfd_default_set_arch_mach (abfd, arch, machine))
758 if (arch != bfd_arch_unknown)
762 NAME(aout,machine_type) (arch, machine, &unknown);
767 /* Determine the size of a relocation entry */
772 obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE;
775 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
779 return (*aout_backend_info(abfd)->set_sizes) (abfd);
783 adjust_o_magic (abfd, execp)
785 struct internal_exec *execp;
787 file_ptr pos = adata (abfd).exec_bytes_size;
792 obj_textsec(abfd)->filepos = pos;
793 pos += obj_textsec(abfd)->_raw_size;
794 vma += obj_textsec(abfd)->_raw_size;
797 if (!obj_datasec(abfd)->user_set_vma)
799 #if 0 /* ?? Does alignment in the file image really matter? */
800 pad = align_power (vma, obj_datasec(abfd)->alignment_power) - vma;
802 obj_textsec(abfd)->_raw_size += pad;
805 obj_datasec(abfd)->vma = vma;
807 obj_datasec(abfd)->filepos = pos;
808 pos += obj_datasec(abfd)->_raw_size;
809 vma += obj_datasec(abfd)->_raw_size;
812 if (!obj_bsssec(abfd)->user_set_vma)
815 pad = align_power (vma, obj_bsssec(abfd)->alignment_power) - vma;
817 obj_datasec(abfd)->_raw_size += pad;
820 obj_bsssec(abfd)->vma = vma;
824 /* The VMA of the .bss section is set by the the VMA of the
825 .data section plus the size of the .data section. We may
826 need to add padding bytes to make this true. */
827 pad = obj_bsssec (abfd)->vma - vma;
830 obj_datasec (abfd)->_raw_size += pad;
834 obj_bsssec(abfd)->filepos = pos;
836 /* Fix up the exec header. */
837 execp->a_text = obj_textsec(abfd)->_raw_size;
838 execp->a_data = obj_datasec(abfd)->_raw_size;
839 execp->a_bss = obj_bsssec(abfd)->_raw_size;
840 N_SET_MAGIC (*execp, OMAGIC);
844 adjust_z_magic (abfd, execp)
846 struct internal_exec *execp;
848 bfd_size_type data_pad, text_pad;
850 CONST struct aout_backend_data *abdp;
851 int ztih; /* Nonzero if text includes exec header. */
853 abdp = aout_backend_info (abfd);
857 && (abdp->text_includes_header
858 || obj_aout_subformat (abfd) == q_magic_format));
859 obj_textsec(abfd)->filepos = (ztih
860 ? adata(abfd).exec_bytes_size
861 : adata(abfd).zmagic_disk_block_size);
862 if (! obj_textsec(abfd)->user_set_vma)
864 /* ?? Do we really need to check for relocs here? */
865 obj_textsec(abfd)->vma = ((abfd->flags & HAS_RELOC)
868 ? (abdp->default_text_vma
869 + adata(abfd).exec_bytes_size)
870 : abdp->default_text_vma));
875 /* The .text section is being loaded at an unusual address. We
876 may need to pad it such that the .data section starts at a page
879 text_pad = ((obj_textsec (abfd)->filepos - obj_textsec (abfd)->vma)
880 & (adata (abfd).page_size - 1));
882 text_pad = ((- obj_textsec (abfd)->vma)
883 & (adata (abfd).page_size - 1));
886 /* Find start of data. */
889 text_end = obj_textsec (abfd)->filepos + obj_textsec (abfd)->_raw_size;
890 text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end;
894 /* Note that if page_size == zmagic_disk_block_size, then
895 filepos == page_size, and this case is the same as the ztih
897 text_end = obj_textsec (abfd)->_raw_size;
898 text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end;
899 text_end += obj_textsec (abfd)->filepos;
901 obj_textsec(abfd)->_raw_size += text_pad;
902 text_end += text_pad;
905 if (!obj_datasec(abfd)->user_set_vma)
908 vma = obj_textsec(abfd)->vma + obj_textsec(abfd)->_raw_size;
909 obj_datasec(abfd)->vma = BFD_ALIGN (vma, adata(abfd).segment_size);
911 if (abdp && abdp->zmagic_mapped_contiguous)
913 text_pad = (obj_datasec(abfd)->vma
914 - obj_textsec(abfd)->vma
915 - obj_textsec(abfd)->_raw_size);
916 obj_textsec(abfd)->_raw_size += text_pad;
918 obj_datasec(abfd)->filepos = (obj_textsec(abfd)->filepos
919 + obj_textsec(abfd)->_raw_size);
921 /* Fix up exec header while we're at it. */
922 execp->a_text = obj_textsec(abfd)->_raw_size;
923 if (ztih && (!abdp || (abdp && !abdp->exec_header_not_counted)))
924 execp->a_text += adata(abfd).exec_bytes_size;
925 if (obj_aout_subformat (abfd) == q_magic_format)
926 N_SET_MAGIC (*execp, QMAGIC);
928 N_SET_MAGIC (*execp, ZMAGIC);
930 /* Spec says data section should be rounded up to page boundary. */
931 obj_datasec(abfd)->_raw_size
932 = align_power (obj_datasec(abfd)->_raw_size,
933 obj_bsssec(abfd)->alignment_power);
934 execp->a_data = BFD_ALIGN (obj_datasec(abfd)->_raw_size,
935 adata(abfd).page_size);
936 data_pad = execp->a_data - obj_datasec(abfd)->_raw_size;
939 if (!obj_bsssec(abfd)->user_set_vma)
940 obj_bsssec(abfd)->vma = (obj_datasec(abfd)->vma
941 + obj_datasec(abfd)->_raw_size);
942 /* If the BSS immediately follows the data section and extra space
943 in the page is left after the data section, fudge data
944 in the header so that the bss section looks smaller by that
945 amount. We'll start the bss section there, and lie to the OS.
946 (Note that a linker script, as well as the above assignment,
947 could have explicitly set the BSS vma to immediately follow
948 the data section.) */
949 if (align_power (obj_bsssec(abfd)->vma, obj_bsssec(abfd)->alignment_power)
950 == obj_datasec(abfd)->vma + obj_datasec(abfd)->_raw_size)
951 execp->a_bss = (data_pad > obj_bsssec(abfd)->_raw_size) ? 0 :
952 obj_bsssec(abfd)->_raw_size - data_pad;
954 execp->a_bss = obj_bsssec(abfd)->_raw_size;
958 adjust_n_magic (abfd, execp)
960 struct internal_exec *execp;
962 file_ptr pos = adata(abfd).exec_bytes_size;
967 obj_textsec(abfd)->filepos = pos;
968 if (!obj_textsec(abfd)->user_set_vma)
969 obj_textsec(abfd)->vma = vma;
971 vma = obj_textsec(abfd)->vma;
972 pos += obj_textsec(abfd)->_raw_size;
973 vma += obj_textsec(abfd)->_raw_size;
976 obj_datasec(abfd)->filepos = pos;
977 if (!obj_datasec(abfd)->user_set_vma)
978 obj_datasec(abfd)->vma = BFD_ALIGN (vma, adata(abfd).segment_size);
979 vma = obj_datasec(abfd)->vma;
981 /* Since BSS follows data immediately, see if it needs alignment. */
982 vma += obj_datasec(abfd)->_raw_size;
983 pad = align_power (vma, obj_bsssec(abfd)->alignment_power) - vma;
984 obj_datasec(abfd)->_raw_size += pad;
985 pos += obj_datasec(abfd)->_raw_size;
988 if (!obj_bsssec(abfd)->user_set_vma)
989 obj_bsssec(abfd)->vma = vma;
991 vma = obj_bsssec(abfd)->vma;
993 /* Fix up exec header. */
994 execp->a_text = obj_textsec(abfd)->_raw_size;
995 execp->a_data = obj_datasec(abfd)->_raw_size;
996 execp->a_bss = obj_bsssec(abfd)->_raw_size;
997 N_SET_MAGIC (*execp, NMAGIC);
1001 NAME(aout,adjust_sizes_and_vmas) (abfd, text_size, text_end)
1003 bfd_size_type *text_size;
1006 struct internal_exec *execp = exec_hdr (abfd);
1008 if (! NAME(aout,make_sections) (abfd))
1011 if (adata(abfd).magic != undecided_magic)
1014 obj_textsec(abfd)->_raw_size =
1015 align_power(obj_textsec(abfd)->_raw_size,
1016 obj_textsec(abfd)->alignment_power);
1018 *text_size = obj_textsec (abfd)->_raw_size;
1019 /* Rule (heuristic) for when to pad to a new page. Note that there
1020 are (at least) two ways demand-paged (ZMAGIC) files have been
1021 handled. Most Berkeley-based systems start the text segment at
1022 (PAGE_SIZE). However, newer versions of SUNOS start the text
1023 segment right after the exec header; the latter is counted in the
1024 text segment size, and is paged in by the kernel with the rest of
1027 /* This perhaps isn't the right way to do this, but made it simpler for me
1028 to understand enough to implement it. Better would probably be to go
1029 right from BFD flags to alignment/positioning characteristics. But the
1030 old code was sloppy enough about handling the flags, and had enough
1031 other magic, that it was a little hard for me to understand. I think
1032 I understand it better now, but I haven't time to do the cleanup this
1035 if (abfd->flags & D_PAGED)
1036 /* Whether or not WP_TEXT is set -- let D_PAGED override. */
1037 adata(abfd).magic = z_magic;
1038 else if (abfd->flags & WP_TEXT)
1039 adata(abfd).magic = n_magic;
1041 adata(abfd).magic = o_magic;
1043 #ifdef BFD_AOUT_DEBUG /* requires gcc2 */
1045 fprintf (stderr, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n",
1047 switch (adata(abfd).magic) {
1048 case n_magic: str = "NMAGIC"; break;
1049 case o_magic: str = "OMAGIC"; break;
1050 case z_magic: str = "ZMAGIC"; break;
1055 obj_textsec(abfd)->vma, obj_textsec(abfd)->_raw_size,
1056 obj_textsec(abfd)->alignment_power,
1057 obj_datasec(abfd)->vma, obj_datasec(abfd)->_raw_size,
1058 obj_datasec(abfd)->alignment_power,
1059 obj_bsssec(abfd)->vma, obj_bsssec(abfd)->_raw_size,
1060 obj_bsssec(abfd)->alignment_power);
1064 switch (adata(abfd).magic)
1067 adjust_o_magic (abfd, execp);
1070 adjust_z_magic (abfd, execp);
1073 adjust_n_magic (abfd, execp);
1079 #ifdef BFD_AOUT_DEBUG
1080 fprintf (stderr, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n",
1081 obj_textsec(abfd)->vma, obj_textsec(abfd)->_raw_size,
1082 obj_textsec(abfd)->filepos,
1083 obj_datasec(abfd)->vma, obj_datasec(abfd)->_raw_size,
1084 obj_datasec(abfd)->filepos,
1085 obj_bsssec(abfd)->vma, obj_bsssec(abfd)->_raw_size);
1093 aout_@var{size}_new_section_hook
1096 boolean aout_@var{size}_new_section_hook,
1098 asection *newsect));
1101 Called by the BFD in response to a @code{bfd_make_section}
1105 NAME(aout,new_section_hook) (abfd, newsect)
1109 /* align to double at least */
1110 newsect->alignment_power = bfd_get_arch_info(abfd)->section_align_power;
1113 if (bfd_get_format (abfd) == bfd_object)
1115 if (obj_textsec(abfd) == NULL && !strcmp(newsect->name, ".text")) {
1116 obj_textsec(abfd)= newsect;
1117 newsect->target_index = N_TEXT;
1121 if (obj_datasec(abfd) == NULL && !strcmp(newsect->name, ".data")) {
1122 obj_datasec(abfd) = newsect;
1123 newsect->target_index = N_DATA;
1127 if (obj_bsssec(abfd) == NULL && !strcmp(newsect->name, ".bss")) {
1128 obj_bsssec(abfd) = newsect;
1129 newsect->target_index = N_BSS;
1135 /* We allow more than three sections internally */
1140 NAME(aout,set_section_contents) (abfd, section, location, offset, count)
1145 bfd_size_type count;
1148 bfd_size_type text_size;
1150 if (abfd->output_has_begun == false)
1152 if (NAME(aout,adjust_sizes_and_vmas) (abfd,
1154 &text_end) == false)
1158 /* regardless, once we know what we're doing, we might as well get going */
1159 if (section != obj_bsssec(abfd))
1161 if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0)
1165 return (bfd_write ((PTR)location, 1, count, abfd) == count) ?
1173 /* Read the external symbols from an a.out file. */
1176 aout_get_external_symbols (abfd)
1179 if (obj_aout_external_syms (abfd) == (struct external_nlist *) NULL)
1181 bfd_size_type count;
1182 struct external_nlist *syms;
1184 count = exec_hdr (abfd)->a_syms / EXTERNAL_NLIST_SIZE;
1186 /* We allocate using malloc to make the values easy to free
1187 later on. If we put them on the obstack it might not be
1188 possible to free them. */
1189 syms = ((struct external_nlist *)
1190 malloc ((size_t) count * EXTERNAL_NLIST_SIZE));
1191 if (syms == (struct external_nlist *) NULL && count != 0)
1193 bfd_set_error (bfd_error_no_memory);
1197 if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
1198 || (bfd_read (syms, 1, exec_hdr (abfd)->a_syms, abfd)
1199 != exec_hdr (abfd)->a_syms))
1205 obj_aout_external_syms (abfd) = syms;
1206 obj_aout_external_sym_count (abfd) = count;
1209 if (obj_aout_external_strings (abfd) == NULL
1210 && exec_hdr (abfd)->a_syms != 0)
1212 unsigned char string_chars[BYTES_IN_WORD];
1213 bfd_size_type stringsize;
1216 /* Get the size of the strings. */
1217 if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0
1218 || (bfd_read ((PTR) string_chars, BYTES_IN_WORD, 1, abfd)
1221 stringsize = GET_WORD (abfd, string_chars);
1223 strings = (char *) malloc ((size_t) stringsize + 1);
1224 if (strings == NULL)
1226 bfd_set_error (bfd_error_no_memory);
1230 /* Skip space for the string count in the buffer for convenience
1231 when using indexes. */
1232 if (bfd_read (strings + BYTES_IN_WORD, 1, stringsize - BYTES_IN_WORD,
1234 != stringsize - BYTES_IN_WORD)
1240 /* Ensure that a zero index yields an empty string. */
1243 /* Sanity preservation. */
1244 strings[stringsize] = '\0';
1246 obj_aout_external_strings (abfd) = strings;
1247 obj_aout_external_string_size (abfd) = stringsize;
1253 /* Translate an a.out symbol into a BFD symbol. The desc, other, type
1254 and symbol->value fields of CACHE_PTR will be set from the a.out
1255 nlist structure. This function is responsible for setting
1256 symbol->flags and symbol->section, and adjusting symbol->value. */
1259 translate_from_native_sym_flags (abfd, cache_ptr)
1261 aout_symbol_type *cache_ptr;
1265 if ((cache_ptr->type & N_STAB) != 0
1266 || cache_ptr->type == N_FN)
1270 /* This is a debugging symbol. */
1272 cache_ptr->symbol.flags = BSF_DEBUGGING;
1274 /* Work out the symbol section. */
1275 switch (cache_ptr->type & N_TYPE)
1279 sec = obj_textsec (abfd);
1282 sec = obj_datasec (abfd);
1285 sec = obj_bsssec (abfd);
1289 sec = bfd_abs_section_ptr;
1293 cache_ptr->symbol.section = sec;
1294 cache_ptr->symbol.value -= sec->vma;
1299 /* Get the default visibility. This does not apply to all types, so
1300 we just hold it in a local variable to use if wanted. */
1301 if ((cache_ptr->type & N_EXT) == 0)
1302 visible = BSF_LOCAL;
1304 visible = BSF_GLOBAL;
1306 switch (cache_ptr->type)
1309 case N_ABS: case N_ABS | N_EXT:
1310 cache_ptr->symbol.section = bfd_abs_section_ptr;
1311 cache_ptr->symbol.flags = visible;
1314 case N_UNDF | N_EXT:
1315 if (cache_ptr->symbol.value != 0)
1317 /* This is a common symbol. */
1318 cache_ptr->symbol.flags = BSF_GLOBAL;
1319 cache_ptr->symbol.section = bfd_com_section_ptr;
1323 cache_ptr->symbol.flags = 0;
1324 cache_ptr->symbol.section = bfd_und_section_ptr;
1328 case N_TEXT: case N_TEXT | N_EXT:
1329 cache_ptr->symbol.section = obj_textsec (abfd);
1330 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1331 cache_ptr->symbol.flags = visible;
1334 /* N_SETV symbols used to represent set vectors placed in the
1335 data section. They are no longer generated. Theoretically,
1336 it was possible to extract the entries and combine them with
1337 new ones, although I don't know if that was ever actually
1338 done. Unless that feature is restored, treat them as data
1340 case N_SETV: case N_SETV | N_EXT:
1341 case N_DATA: case N_DATA | N_EXT:
1342 cache_ptr->symbol.section = obj_datasec (abfd);
1343 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1344 cache_ptr->symbol.flags = visible;
1347 case N_BSS: case N_BSS | N_EXT:
1348 cache_ptr->symbol.section = obj_bsssec (abfd);
1349 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1350 cache_ptr->symbol.flags = visible;
1353 case N_SETA: case N_SETA | N_EXT:
1354 case N_SETT: case N_SETT | N_EXT:
1355 case N_SETD: case N_SETD | N_EXT:
1356 case N_SETB: case N_SETB | N_EXT:
1359 arelent_chain *reloc;
1360 asection *into_section;
1362 /* This is a set symbol. The name of the symbol is the name
1363 of the set (e.g., __CTOR_LIST__). The value of the symbol
1364 is the value to add to the set. We create a section with
1365 the same name as the symbol, and add a reloc to insert the
1366 appropriate value into the section.
1368 This action is actually obsolete; it used to make the
1369 linker do the right thing, but the linker no longer uses
1372 section = bfd_get_section_by_name (abfd, cache_ptr->symbol.name);
1373 if (section == NULL)
1377 copy = bfd_alloc (abfd, strlen (cache_ptr->symbol.name) + 1);
1380 bfd_set_error (bfd_error_no_memory);
1384 strcpy (copy, cache_ptr->symbol.name);
1385 section = bfd_make_section (abfd, copy);
1386 if (section == NULL)
1390 reloc = (arelent_chain *) bfd_alloc (abfd, sizeof (arelent_chain));
1393 bfd_set_error (bfd_error_no_memory);
1397 /* Build a relocation entry for the constructor. */
1398 switch (cache_ptr->type & N_TYPE)
1401 into_section = bfd_abs_section_ptr;
1402 cache_ptr->type = N_ABS;
1405 into_section = obj_textsec (abfd);
1406 cache_ptr->type = N_TEXT;
1409 into_section = obj_datasec (abfd);
1410 cache_ptr->type = N_DATA;
1413 into_section = obj_bsssec (abfd);
1414 cache_ptr->type = N_BSS;
1418 /* Build a relocation pointing into the constructor section
1419 pointing at the symbol in the set vector specified. */
1420 reloc->relent.addend = cache_ptr->symbol.value;
1421 cache_ptr->symbol.section = into_section;
1422 reloc->relent.sym_ptr_ptr = into_section->symbol_ptr_ptr;
1424 /* We modify the symbol to belong to a section depending upon
1425 the name of the symbol, and add to the size of the section
1426 to contain a pointer to the symbol. Build a reloc entry to
1427 relocate to this symbol attached to this section. */
1428 section->flags = SEC_CONSTRUCTOR | SEC_RELOC;
1430 section->reloc_count++;
1431 section->alignment_power = 2;
1433 reloc->next = section->constructor_chain;
1434 section->constructor_chain = reloc;
1435 reloc->relent.address = section->_raw_size;
1436 section->_raw_size += BYTES_IN_WORD;
1438 reloc->relent.howto = CTOR_TABLE_RELOC_HOWTO(abfd);
1440 cache_ptr->symbol.flags |= BSF_CONSTRUCTOR;
1445 /* This symbol is the text of a warning message. The next
1446 symbol is the symbol to associate the warning with. If a
1447 reference is made to that symbol, a warning is issued. */
1448 cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_WARNING;
1450 /* @@ Stuffing pointers into integers is a no-no. We can
1451 usually get away with it if the integer is large enough
1453 if (sizeof (cache_ptr + 1) > sizeof (bfd_vma))
1455 cache_ptr->symbol.value = (bfd_vma) (cache_ptr + 1);
1457 cache_ptr->symbol.section = bfd_abs_section_ptr;
1461 case N_INDR: case N_INDR | N_EXT:
1462 /* An indirect symbol. This consists of two symbols in a row.
1463 The first symbol is the name of the indirection. The second
1464 symbol is the name of the target. A reference to the first
1465 symbol becomes a reference to the second. */
1466 cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_INDIRECT | visible;
1468 /* @@ Stuffing pointers into integers is a no-no. We can
1469 usually get away with it if the integer is large enough
1471 if (sizeof (cache_ptr + 1) > sizeof (bfd_vma))
1473 cache_ptr->symbol.value = (bfd_vma) (cache_ptr + 1);
1475 cache_ptr->symbol.section = bfd_ind_section_ptr;
1480 cache_ptr->symbol.section = bfd_und_section_ptr;
1481 cache_ptr->symbol.flags = BSF_WEAK;
1485 cache_ptr->symbol.section = bfd_abs_section_ptr;
1486 cache_ptr->symbol.flags = BSF_WEAK;
1490 cache_ptr->symbol.section = obj_textsec (abfd);
1491 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1492 cache_ptr->symbol.flags = BSF_WEAK;
1496 cache_ptr->symbol.section = obj_datasec (abfd);
1497 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1498 cache_ptr->symbol.flags = BSF_WEAK;
1502 cache_ptr->symbol.section = obj_bsssec (abfd);
1503 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1504 cache_ptr->symbol.flags = BSF_WEAK;
1511 /* Set the fields of SYM_POINTER according to CACHE_PTR. */
1514 translate_to_native_sym_flags (abfd, cache_ptr, sym_pointer)
1517 struct external_nlist *sym_pointer;
1519 bfd_vma value = cache_ptr->value;
1521 /* Mask out any existing type bits in case copying from one section
1523 sym_pointer->e_type[0] &= ~N_TYPE;
1525 if (bfd_is_abs_section (bfd_get_section (cache_ptr)))
1526 sym_pointer->e_type[0] |= N_ABS;
1527 else if (bfd_get_section (cache_ptr) == obj_textsec (abfd)
1528 || (bfd_get_section (cache_ptr)->output_section
1529 == obj_textsec (abfd)))
1530 sym_pointer->e_type[0] |= N_TEXT;
1531 else if (bfd_get_section (cache_ptr) == obj_datasec (abfd)
1532 || (bfd_get_section (cache_ptr)->output_section
1533 == obj_datasec (abfd)))
1534 sym_pointer->e_type[0] |= N_DATA;
1535 else if (bfd_get_section (cache_ptr) == obj_bsssec (abfd)
1536 || (bfd_get_section (cache_ptr)->output_section
1537 == obj_bsssec (abfd)))
1538 sym_pointer->e_type[0] |= N_BSS;
1539 else if (bfd_get_section (cache_ptr) == NULL)
1541 /* Protect the bfd_is_com_section call. This case occurs, e.g.,
1542 for the *DEBUG* section of a COFF file. */
1543 bfd_set_error (bfd_error_nonrepresentable_section);
1546 else if (bfd_is_und_section (bfd_get_section (cache_ptr)))
1547 sym_pointer->e_type[0] = N_UNDF | N_EXT;
1548 else if (bfd_is_ind_section (bfd_get_section (cache_ptr)))
1549 sym_pointer->e_type[0] = N_INDR;
1550 else if (bfd_is_com_section (bfd_get_section (cache_ptr)))
1551 sym_pointer->e_type[0] = N_UNDF | N_EXT;
1554 bfd_set_error (bfd_error_nonrepresentable_section);
1558 /* Turn the symbol from section relative to absolute again */
1559 if (cache_ptr->section->output_section != NULL)
1560 value += (cache_ptr->section->output_section->vma
1561 + cache_ptr->section->output_offset);
1563 value += cache_ptr->section->vma;
1565 if ((cache_ptr->flags & BSF_WARNING) != 0)
1566 sym_pointer->e_type[0] = N_WARNING;
1568 if ((cache_ptr->flags & BSF_DEBUGGING) != 0)
1569 sym_pointer->e_type[0] = ((aout_symbol_type *) cache_ptr)->type;
1570 else if ((cache_ptr->flags & BSF_GLOBAL) != 0)
1571 sym_pointer->e_type[0] |= N_EXT;
1573 if ((cache_ptr->flags & BSF_CONSTRUCTOR) != 0)
1575 int type = ((aout_symbol_type *) cache_ptr)->type;
1578 case N_ABS: type = N_SETA; break;
1579 case N_TEXT: type = N_SETT; break;
1580 case N_DATA: type = N_SETD; break;
1581 case N_BSS: type = N_SETB; break;
1583 sym_pointer->e_type[0] = type;
1586 if ((cache_ptr->flags & BSF_WEAK) != 0)
1590 switch (sym_pointer->e_type[0] & N_TYPE)
1593 case N_ABS: type = N_WEAKA; break;
1594 case N_TEXT: type = N_WEAKT; break;
1595 case N_DATA: type = N_WEAKD; break;
1596 case N_BSS: type = N_WEAKB; break;
1597 case N_UNDF: type = N_WEAKU; break;
1599 sym_pointer->e_type[0] = type;
1602 PUT_WORD(abfd, value, sym_pointer->e_value);
1607 /* Native-level interface to symbols. */
1610 NAME(aout,make_empty_symbol) (abfd)
1613 aout_symbol_type *new =
1614 (aout_symbol_type *)bfd_zalloc (abfd, sizeof (aout_symbol_type));
1617 bfd_set_error (bfd_error_no_memory);
1620 new->symbol.the_bfd = abfd;
1622 return &new->symbol;
1625 /* Translate a set of internal symbols into external symbols. */
1628 NAME(aout,translate_symbol_table) (abfd, in, ext, count, str, strsize, dynamic)
1630 aout_symbol_type *in;
1631 struct external_nlist *ext;
1632 bfd_size_type count;
1634 bfd_size_type strsize;
1637 struct external_nlist *ext_end;
1639 ext_end = ext + count;
1640 for (; ext < ext_end; ext++, in++)
1644 x = GET_WORD (abfd, ext->e_strx);
1645 in->symbol.the_bfd = abfd;
1647 /* For the normal symbols, the zero index points at the number
1648 of bytes in the string table but is to be interpreted as the
1649 null string. For the dynamic symbols, the number of bytes in
1650 the string table is stored in the __DYNAMIC structure and the
1651 zero index points at an actual string. */
1652 if (x == 0 && ! dynamic)
1653 in->symbol.name = "";
1654 else if (x < strsize)
1655 in->symbol.name = str + x;
1659 in->symbol.value = GET_SWORD (abfd, ext->e_value);
1660 in->desc = bfd_h_get_16 (abfd, ext->e_desc);
1661 in->other = bfd_h_get_8 (abfd, ext->e_other);
1662 in->type = bfd_h_get_8 (abfd, ext->e_type);
1663 in->symbol.udata = 0;
1665 if (! translate_from_native_sym_flags (abfd, in))
1669 in->symbol.flags |= BSF_DYNAMIC;
1675 /* We read the symbols into a buffer, which is discarded when this
1676 function exits. We read the strings into a buffer large enough to
1677 hold them all plus all the cached symbol entries. */
1680 NAME(aout,slurp_symbol_table) (abfd)
1683 struct external_nlist *old_external_syms;
1684 aout_symbol_type *cached;
1687 /* If there's no work to be done, don't do any */
1688 if (obj_aout_symbols (abfd) != (aout_symbol_type *) NULL)
1691 old_external_syms = obj_aout_external_syms (abfd);
1693 if (! aout_get_external_symbols (abfd))
1696 if (obj_aout_external_sym_count (abfd) == 0)
1698 bfd_set_error (bfd_error_no_symbols);
1702 cached_size = (obj_aout_external_sym_count (abfd)
1703 * sizeof (aout_symbol_type));
1704 cached = (aout_symbol_type *) malloc (cached_size);
1707 bfd_set_error (bfd_error_no_memory);
1710 memset (cached, 0, cached_size);
1712 /* Convert from external symbol information to internal. */
1713 if (! (NAME(aout,translate_symbol_table)
1715 obj_aout_external_syms (abfd),
1716 obj_aout_external_sym_count (abfd),
1717 obj_aout_external_strings (abfd),
1718 obj_aout_external_string_size (abfd),
1725 bfd_get_symcount (abfd) = obj_aout_external_sym_count (abfd);
1727 obj_aout_symbols (abfd) = cached;
1729 /* It is very likely that anybody who calls this function will not
1730 want the external symbol information, so if it was allocated
1731 because of our call to aout_get_external_symbols, we free it up
1732 right away to save space. */
1733 if (old_external_syms == (struct external_nlist *) NULL
1734 && obj_aout_external_syms (abfd) != (struct external_nlist *) NULL)
1736 free (obj_aout_external_syms (abfd));
1737 obj_aout_external_syms (abfd) = NULL;
1743 /* We use a hash table when writing out symbols so that we only write
1744 out a particular string once. This helps particularly when the
1745 linker writes out stabs debugging entries, because each different
1746 contributing object file tends to have many duplicate stabs
1749 This hash table code breaks dbx on SunOS 4.1.3, so we don't do it
1750 if BFD_TRADITIONAL_FORMAT is set. */
1752 static bfd_size_type add_to_stringtab
1753 PARAMS ((bfd *, struct bfd_strtab_hash *, const char *, boolean));
1754 static boolean emit_stringtab PARAMS ((bfd *, struct bfd_strtab_hash *));
1756 /* Get the index of a string in a strtab, adding it if it is not
1759 static INLINE bfd_size_type
1760 add_to_stringtab (abfd, tab, str, copy)
1762 struct bfd_strtab_hash *tab;
1768 /* An index of 0 always means the empty string. */
1772 /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx
1773 doesn't understand a hashed string table. */
1775 if ((abfd->flags & BFD_TRADITIONAL_FORMAT) != 0)
1778 /* Add BYTES_IN_WORD to the return value to account for the space
1779 taken up by the count. */
1780 return BYTES_IN_WORD + _bfd_stringtab_add (tab, str, hash, copy);
1783 /* Write out a strtab. ABFD is already at the right location in the
1787 emit_stringtab (abfd, tab)
1789 struct bfd_strtab_hash *tab;
1791 bfd_byte buffer[BYTES_IN_WORD];
1793 /* The string table starts with the size. */
1794 PUT_WORD (abfd, _bfd_stringtab_size (tab) + BYTES_IN_WORD, buffer);
1795 if (bfd_write ((PTR) buffer, 1, BYTES_IN_WORD, abfd) != BYTES_IN_WORD)
1798 return _bfd_stringtab_emit (abfd, tab);
1802 NAME(aout,write_syms) (abfd)
1805 unsigned int count ;
1806 asymbol **generic = bfd_get_outsymbols (abfd);
1807 struct bfd_strtab_hash *strtab;
1809 strtab = _bfd_stringtab_init ();
1813 for (count = 0; count < bfd_get_symcount (abfd); count++)
1815 asymbol *g = generic[count];
1817 struct external_nlist nsp;
1819 indx = add_to_stringtab (abfd, strtab, g->name, false);
1820 if (indx == (bfd_size_type) -1)
1822 PUT_WORD (abfd, indx, (bfd_byte *) nsp.e_strx);
1824 if (bfd_asymbol_flavour(g) == abfd->xvec->flavour)
1826 bfd_h_put_16(abfd, aout_symbol(g)->desc, nsp.e_desc);
1827 bfd_h_put_8(abfd, aout_symbol(g)->other, nsp.e_other);
1828 bfd_h_put_8(abfd, aout_symbol(g)->type, nsp.e_type);
1832 bfd_h_put_16(abfd,0, nsp.e_desc);
1833 bfd_h_put_8(abfd, 0, nsp.e_other);
1834 bfd_h_put_8(abfd, 0, nsp.e_type);
1837 if (! translate_to_native_sym_flags (abfd, g, &nsp))
1840 if (bfd_write((PTR)&nsp,1,EXTERNAL_NLIST_SIZE, abfd)
1841 != EXTERNAL_NLIST_SIZE)
1844 /* NB: `KEEPIT' currently overlays `flags', so set this only
1845 here, at the end. */
1849 if (! emit_stringtab (abfd, strtab))
1852 _bfd_stringtab_free (strtab);
1857 _bfd_stringtab_free (strtab);
1863 NAME(aout,get_symtab) (abfd, location)
1867 unsigned int counter = 0;
1868 aout_symbol_type *symbase;
1870 if (!NAME(aout,slurp_symbol_table)(abfd))
1873 for (symbase = obj_aout_symbols(abfd); counter++ < bfd_get_symcount (abfd);)
1874 *(location++) = (asymbol *)( symbase++);
1876 return bfd_get_symcount (abfd);
1880 /* Standard reloc stuff */
1881 /* Output standard relocation information to a file in target byte order. */
1884 NAME(aout,swap_std_reloc_out) (abfd, g, natptr)
1887 struct reloc_std_external *natptr;
1890 asymbol *sym = *(g->sym_ptr_ptr);
1892 unsigned int r_length;
1894 int r_baserel, r_jmptable, r_relative;
1895 asection *output_section = sym->section->output_section;
1897 PUT_WORD(abfd, g->address, natptr->r_address);
1899 r_length = g->howto->size ; /* Size as a power of two */
1900 r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */
1901 /* XXX This relies on relocs coming from a.out files. */
1902 r_baserel = (g->howto->type & 8) != 0;
1903 r_jmptable = (g->howto->type & 16) != 0;
1904 r_relative = (g->howto->type & 32) != 0;
1907 /* For a standard reloc, the addend is in the object file. */
1908 r_addend = g->addend + (*(g->sym_ptr_ptr))->section->output_section->vma;
1911 /* name was clobbered by aout_write_syms to be symbol index */
1913 /* If this relocation is relative to a symbol then set the
1914 r_index to the symbols index, and the r_extern bit.
1916 Absolute symbols can come in in two ways, either as an offset
1917 from the abs section, or as a symbol which has an abs value.
1922 if (bfd_is_com_section (output_section)
1923 || bfd_is_abs_section (output_section)
1924 || bfd_is_und_section (output_section))
1926 if (bfd_abs_section_ptr->symbol == sym)
1928 /* Whoops, looked like an abs symbol, but is really an offset
1929 from the abs section */
1935 /* Fill in symbol */
1937 r_index = stoi((*(g->sym_ptr_ptr))->KEEPIT);
1943 /* Just an ordinary section */
1945 r_index = output_section->target_index;
1948 /* now the fun stuff */
1949 if (abfd->xvec->header_byteorder_big_p != false) {
1950 natptr->r_index[0] = r_index >> 16;
1951 natptr->r_index[1] = r_index >> 8;
1952 natptr->r_index[2] = r_index;
1954 (r_extern? RELOC_STD_BITS_EXTERN_BIG: 0)
1955 | (r_pcrel? RELOC_STD_BITS_PCREL_BIG: 0)
1956 | (r_baserel? RELOC_STD_BITS_BASEREL_BIG: 0)
1957 | (r_jmptable? RELOC_STD_BITS_JMPTABLE_BIG: 0)
1958 | (r_relative? RELOC_STD_BITS_RELATIVE_BIG: 0)
1959 | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG);
1961 natptr->r_index[2] = r_index >> 16;
1962 natptr->r_index[1] = r_index >> 8;
1963 natptr->r_index[0] = r_index;
1965 (r_extern? RELOC_STD_BITS_EXTERN_LITTLE: 0)
1966 | (r_pcrel? RELOC_STD_BITS_PCREL_LITTLE: 0)
1967 | (r_baserel? RELOC_STD_BITS_BASEREL_LITTLE: 0)
1968 | (r_jmptable? RELOC_STD_BITS_JMPTABLE_LITTLE: 0)
1969 | (r_relative? RELOC_STD_BITS_RELATIVE_LITTLE: 0)
1970 | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE);
1975 /* Extended stuff */
1976 /* Output extended relocation information to a file in target byte order. */
1979 NAME(aout,swap_ext_reloc_out) (abfd, g, natptr)
1982 register struct reloc_ext_external *natptr;
1986 unsigned int r_type;
1987 unsigned int r_addend;
1988 asymbol *sym = *(g->sym_ptr_ptr);
1989 asection *output_section = sym->section->output_section;
1991 PUT_WORD (abfd, g->address, natptr->r_address);
1993 r_type = (unsigned int) g->howto->type;
1995 r_addend = g->addend + (*(g->sym_ptr_ptr))->section->output_section->vma;
1997 /* If this relocation is relative to a symbol then set the
1998 r_index to the symbols index, and the r_extern bit.
2000 Absolute symbols can come in in two ways, either as an offset
2001 from the abs section, or as a symbol which has an abs value.
2002 check for that here. */
2004 if (bfd_is_com_section (output_section)
2005 || bfd_is_abs_section (output_section)
2006 || bfd_is_und_section (output_section))
2008 if (bfd_abs_section_ptr->symbol == sym)
2010 /* Whoops, looked like an abs symbol, but is really an offset
2011 from the abs section */
2018 r_index = stoi((*(g->sym_ptr_ptr))->KEEPIT);
2023 /* Just an ordinary section */
2025 r_index = output_section->target_index;
2028 /* now the fun stuff */
2029 if (abfd->xvec->header_byteorder_big_p != false) {
2030 natptr->r_index[0] = r_index >> 16;
2031 natptr->r_index[1] = r_index >> 8;
2032 natptr->r_index[2] = r_index;
2034 ((r_extern? RELOC_EXT_BITS_EXTERN_BIG: 0)
2035 | (r_type << RELOC_EXT_BITS_TYPE_SH_BIG));
2037 natptr->r_index[2] = r_index >> 16;
2038 natptr->r_index[1] = r_index >> 8;
2039 natptr->r_index[0] = r_index;
2041 (r_extern? RELOC_EXT_BITS_EXTERN_LITTLE: 0)
2042 | (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE);
2045 PUT_WORD (abfd, r_addend, natptr->r_addend);
2048 /* BFD deals internally with all things based from the section they're
2049 in. so, something in 10 bytes into a text section with a base of
2050 50 would have a symbol (.text+10) and know .text vma was 50.
2052 Aout keeps all it's symbols based from zero, so the symbol would
2053 contain 60. This macro subs the base of each section from the value
2054 to give the true offset from the section */
2057 #define MOVE_ADDRESS(ad) \
2059 /* undefined symbol */ \
2060 cache_ptr->sym_ptr_ptr = symbols + r_index; \
2061 cache_ptr->addend = ad; \
2063 /* defined, section relative. replace symbol with pointer to \
2064 symbol which points to section */ \
2065 switch (r_index) { \
2067 case N_TEXT | N_EXT: \
2068 cache_ptr->sym_ptr_ptr = obj_textsec(abfd)->symbol_ptr_ptr; \
2069 cache_ptr->addend = ad - su->textsec->vma; \
2072 case N_DATA | N_EXT: \
2073 cache_ptr->sym_ptr_ptr = obj_datasec(abfd)->symbol_ptr_ptr; \
2074 cache_ptr->addend = ad - su->datasec->vma; \
2077 case N_BSS | N_EXT: \
2078 cache_ptr->sym_ptr_ptr = obj_bsssec(abfd)->symbol_ptr_ptr; \
2079 cache_ptr->addend = ad - su->bsssec->vma; \
2083 case N_ABS | N_EXT: \
2084 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \
2085 cache_ptr->addend = ad; \
2091 NAME(aout,swap_ext_reloc_in) (abfd, bytes, cache_ptr, symbols)
2093 struct reloc_ext_external *bytes;
2099 unsigned int r_type;
2100 struct aoutdata *su = &(abfd->tdata.aout_data->a);
2102 cache_ptr->address = (GET_SWORD (abfd, bytes->r_address));
2104 /* now the fun stuff */
2105 if (abfd->xvec->header_byteorder_big_p != false) {
2106 r_index = (bytes->r_index[0] << 16)
2107 | (bytes->r_index[1] << 8)
2108 | bytes->r_index[2];
2109 r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG));
2110 r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
2111 >> RELOC_EXT_BITS_TYPE_SH_BIG;
2113 r_index = (bytes->r_index[2] << 16)
2114 | (bytes->r_index[1] << 8)
2115 | bytes->r_index[0];
2116 r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE));
2117 r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
2118 >> RELOC_EXT_BITS_TYPE_SH_LITTLE;
2121 cache_ptr->howto = howto_table_ext + r_type;
2122 MOVE_ADDRESS(GET_SWORD(abfd, bytes->r_addend));
2126 NAME(aout,swap_std_reloc_in) (abfd, bytes, cache_ptr, symbols)
2128 struct reloc_std_external *bytes;
2134 unsigned int r_length;
2136 int r_baserel, r_jmptable, r_relative;
2137 struct aoutdata *su = &(abfd->tdata.aout_data->a);
2140 cache_ptr->address = bfd_h_get_32 (abfd, bytes->r_address);
2142 /* now the fun stuff */
2143 if (abfd->xvec->header_byteorder_big_p != false) {
2144 r_index = (bytes->r_index[0] << 16)
2145 | (bytes->r_index[1] << 8)
2146 | bytes->r_index[2];
2147 r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
2148 r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
2149 r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_BIG));
2150 r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG));
2151 r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG));
2152 r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_BIG)
2153 >> RELOC_STD_BITS_LENGTH_SH_BIG;
2155 r_index = (bytes->r_index[2] << 16)
2156 | (bytes->r_index[1] << 8)
2157 | bytes->r_index[0];
2158 r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
2159 r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
2160 r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE));
2161 r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE));
2162 r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE));
2163 r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE)
2164 >> RELOC_STD_BITS_LENGTH_SH_LITTLE;
2167 howto_idx = r_length + 4 * r_pcrel + 8 * r_baserel
2168 + 16 * r_jmptable + 32 * r_relative;
2169 BFD_ASSERT (howto_idx < TABLE_SIZE (howto_table_std));
2170 cache_ptr->howto = howto_table_std + howto_idx;
2171 BFD_ASSERT (cache_ptr->howto->type != -1);
2176 /* Read and swap the relocs for a section. */
2179 NAME(aout,slurp_reloc_table) (abfd, asect, symbols)
2185 bfd_size_type reloc_size;
2187 arelent *reloc_cache;
2189 unsigned int counter = 0;
2192 if (asect->relocation)
2195 if (asect->flags & SEC_CONSTRUCTOR)
2198 if (asect == obj_datasec (abfd))
2199 reloc_size = exec_hdr(abfd)->a_drsize;
2200 else if (asect == obj_textsec (abfd))
2201 reloc_size = exec_hdr(abfd)->a_trsize;
2202 else if (asect == obj_bsssec (abfd))
2206 bfd_set_error (bfd_error_invalid_operation);
2210 if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0)
2213 each_size = obj_reloc_entry_size (abfd);
2215 count = reloc_size / each_size;
2217 reloc_cache = (arelent *) malloc ((size_t) (count * sizeof (arelent)));
2218 if (reloc_cache == NULL && count != 0)
2220 bfd_set_error (bfd_error_no_memory);
2223 memset (reloc_cache, 0, count * sizeof (arelent));
2225 relocs = malloc (reloc_size);
2226 if (relocs == NULL && reloc_size != 0)
2229 bfd_set_error (bfd_error_no_memory);
2233 if (bfd_read (relocs, 1, reloc_size, abfd) != reloc_size)
2240 cache_ptr = reloc_cache;
2241 if (each_size == RELOC_EXT_SIZE)
2243 register struct reloc_ext_external *rptr =
2244 (struct reloc_ext_external *) relocs;
2246 for (; counter < count; counter++, rptr++, cache_ptr++)
2247 NAME(aout,swap_ext_reloc_in) (abfd, rptr, cache_ptr, symbols);
2251 register struct reloc_std_external *rptr =
2252 (struct reloc_std_external *) relocs;
2254 for (; counter < count; counter++, rptr++, cache_ptr++)
2255 MY_swap_std_reloc_in(abfd, rptr, cache_ptr, symbols);
2260 asect->relocation = reloc_cache;
2261 asect->reloc_count = cache_ptr - reloc_cache;
2266 /* Write out a relocation section into an object file. */
2269 NAME(aout,squirt_out_relocs) (abfd, section)
2274 unsigned char *native, *natptr;
2277 unsigned int count = section->reloc_count;
2280 if (count == 0) return true;
2282 each_size = obj_reloc_entry_size (abfd);
2283 natsize = each_size * count;
2284 native = (unsigned char *) bfd_zalloc (abfd, natsize);
2286 bfd_set_error (bfd_error_no_memory);
2290 generic = section->orelocation;
2292 if (each_size == RELOC_EXT_SIZE)
2294 for (natptr = native;
2296 --count, natptr += each_size, ++generic)
2297 NAME(aout,swap_ext_reloc_out) (abfd, *generic, (struct reloc_ext_external *)natptr);
2301 for (natptr = native;
2303 --count, natptr += each_size, ++generic)
2304 MY_swap_std_reloc_out(abfd, *generic, (struct reloc_std_external *)natptr);
2307 if ( bfd_write ((PTR) native, 1, natsize, abfd) != natsize) {
2308 bfd_release(abfd, native);
2311 bfd_release (abfd, native);
2316 /* This is stupid. This function should be a boolean predicate */
2318 NAME(aout,canonicalize_reloc) (abfd, section, relptr, symbols)
2324 arelent *tblptr = section->relocation;
2327 if (section == obj_bsssec (abfd))
2333 if (!(tblptr || NAME(aout,slurp_reloc_table)(abfd, section, symbols)))
2336 if (section->flags & SEC_CONSTRUCTOR) {
2337 arelent_chain *chain = section->constructor_chain;
2338 for (count = 0; count < section->reloc_count; count ++) {
2339 *relptr ++ = &chain->relent;
2340 chain = chain->next;
2344 tblptr = section->relocation;
2346 for (count = 0; count++ < section->reloc_count;)
2348 *relptr++ = tblptr++;
2353 return section->reloc_count;
2357 NAME(aout,get_reloc_upper_bound) (abfd, asect)
2361 if (bfd_get_format (abfd) != bfd_object) {
2362 bfd_set_error (bfd_error_invalid_operation);
2365 if (asect->flags & SEC_CONSTRUCTOR) {
2366 return (sizeof (arelent *) * (asect->reloc_count+1));
2369 if (asect == obj_datasec (abfd))
2370 return (sizeof (arelent *)
2371 * ((exec_hdr(abfd)->a_drsize / obj_reloc_entry_size (abfd))
2374 if (asect == obj_textsec (abfd))
2375 return (sizeof (arelent *)
2376 * ((exec_hdr(abfd)->a_trsize / obj_reloc_entry_size (abfd))
2379 if (asect == obj_bsssec (abfd))
2380 return sizeof (arelent *);
2382 if (asect == obj_bsssec (abfd))
2385 bfd_set_error (bfd_error_invalid_operation);
2391 NAME(aout,get_symtab_upper_bound) (abfd)
2394 if (!NAME(aout,slurp_symbol_table)(abfd))
2397 return (bfd_get_symcount (abfd)+1) * (sizeof (aout_symbol_type *));
2402 NAME(aout,get_lineno) (ignore_abfd, ignore_symbol)
2404 asymbol *ignore_symbol;
2406 return (alent *)NULL;
2411 NAME(aout,get_symbol_info) (ignore_abfd, symbol, ret)
2416 bfd_symbol_info (symbol, ret);
2418 if (ret->type == '?')
2420 int type_code = aout_symbol(symbol)->type & 0xff;
2421 CONST char *stab_name = aout_stab_name(type_code);
2422 static char buf[10];
2424 if (stab_name == NULL)
2426 sprintf(buf, "(%d)", type_code);
2430 ret->stab_other = (unsigned)(aout_symbol(symbol)->other & 0xff);
2431 ret->stab_desc = (unsigned)(aout_symbol(symbol)->desc & 0xffff);
2432 ret->stab_name = stab_name;
2438 NAME(aout,print_symbol) (ignore_abfd, afile, symbol, how)
2442 bfd_print_symbol_type how;
2444 FILE *file = (FILE *)afile;
2447 case bfd_print_symbol_name:
2449 fprintf(file,"%s", symbol->name);
2451 case bfd_print_symbol_more:
2452 fprintf(file,"%4x %2x %2x",(unsigned)(aout_symbol(symbol)->desc & 0xffff),
2453 (unsigned)(aout_symbol(symbol)->other & 0xff),
2454 (unsigned)(aout_symbol(symbol)->type));
2456 case bfd_print_symbol_all:
2458 CONST char *section_name = symbol->section->name;
2461 bfd_print_symbol_vandf((PTR)file,symbol);
2463 fprintf(file," %-5s %04x %02x %02x",
2465 (unsigned)(aout_symbol(symbol)->desc & 0xffff),
2466 (unsigned)(aout_symbol(symbol)->other & 0xff),
2467 (unsigned)(aout_symbol(symbol)->type & 0xff));
2469 fprintf(file," %s", symbol->name);
2476 provided a BFD, a section and an offset into the section, calculate
2477 and return the name of the source file and the line nearest to the
2482 NAME(aout,find_nearest_line)
2483 (abfd, section, symbols, offset, filename_ptr, functionname_ptr, line_ptr)
2488 CONST char **filename_ptr;
2489 CONST char **functionname_ptr;
2490 unsigned int *line_ptr;
2492 /* Run down the file looking for the filename, function and linenumber */
2494 static char buffer[100];
2495 static char filename_buffer[200];
2496 CONST char *directory_name = NULL;
2497 CONST char *main_file_name = NULL;
2498 CONST char *current_file_name = NULL;
2499 CONST char *line_file_name = NULL; /* Value of current_file_name at line number. */
2500 bfd_vma high_line_vma = ~0;
2501 bfd_vma low_func_vma = 0;
2503 *filename_ptr = abfd->filename;
2504 *functionname_ptr = 0;
2506 if (symbols != (asymbol **)NULL) {
2507 for (p = symbols; *p; p++) {
2508 aout_symbol_type *q = (aout_symbol_type *)(*p);
2512 main_file_name = current_file_name = q->symbol.name;
2513 /* Look ahead to next symbol to check if that too is an N_SO. */
2517 q = (aout_symbol_type *)(*p);
2518 if (q->type != (int)N_SO)
2521 /* Found a second N_SO First is directory; second is filename. */
2522 directory_name = current_file_name;
2523 main_file_name = current_file_name = q->symbol.name;
2524 if (obj_textsec(abfd) != section)
2528 current_file_name = q->symbol.name;
2535 /* We'll keep this if it resolves nearer than the one we have already */
2536 if (q->symbol.value >= offset &&
2537 q->symbol.value < high_line_vma) {
2538 *line_ptr = q->desc;
2539 high_line_vma = q->symbol.value;
2540 line_file_name = current_file_name;
2545 /* We'll keep this if it is nearer than the one we have already */
2546 if (q->symbol.value >= low_func_vma &&
2547 q->symbol.value <= offset) {
2548 low_func_vma = q->symbol.value;
2549 func = (asymbol *)q;
2551 if (*line_ptr && func) {
2552 CONST char *function = func->name;
2555 /* The caller expects a symbol name. We actually have a
2556 function name, without the leading underscore. Put the
2557 underscore back in, so that the caller gets a symbol
2559 if (bfd_get_symbol_leading_char (abfd) == '\0')
2560 strncpy (buffer, function, sizeof (buffer) - 1);
2563 buffer[0] = bfd_get_symbol_leading_char (abfd);
2564 strncpy (buffer + 1, function, sizeof (buffer) - 2);
2566 buffer[sizeof(buffer)-1] = 0;
2567 /* Have to remove : stuff */
2568 p = strchr(buffer,':');
2569 if (p != NULL) { *p = '\0'; }
2570 *functionname_ptr = buffer;
2582 main_file_name = line_file_name;
2583 if (main_file_name) {
2584 if (main_file_name[0] == '/' || directory_name == NULL)
2585 *filename_ptr = main_file_name;
2587 sprintf(filename_buffer, "%.140s%.50s",
2588 directory_name, main_file_name);
2589 *filename_ptr = filename_buffer;
2598 NAME(aout,sizeof_headers) (abfd, execable)
2602 return adata(abfd).exec_bytes_size;
2605 /* Free all information we have cached for this BFD. We can always
2606 read it again later if we need it. */
2609 NAME(aout,bfd_free_cached_info) (abfd)
2614 if (bfd_get_format (abfd) != bfd_object)
2617 #define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; }
2618 BFCI_FREE (obj_aout_symbols (abfd));
2619 BFCI_FREE (obj_aout_external_syms (abfd));
2620 BFCI_FREE (obj_aout_external_strings (abfd));
2621 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
2622 BFCI_FREE (o->relocation);
2628 /* a.out link code. */
2630 static boolean aout_link_add_object_symbols
2631 PARAMS ((bfd *, struct bfd_link_info *));
2632 static boolean aout_link_check_archive_element
2633 PARAMS ((bfd *, struct bfd_link_info *, boolean *));
2634 static boolean aout_link_free_symbols PARAMS ((bfd *));
2635 static boolean aout_link_check_ar_symbols
2636 PARAMS ((bfd *, struct bfd_link_info *, boolean *pneeded));
2637 static boolean aout_link_add_symbols
2638 PARAMS ((bfd *, struct bfd_link_info *));
2640 /* Routine to create an entry in an a.out link hash table. */
2642 struct bfd_hash_entry *
2643 NAME(aout,link_hash_newfunc) (entry, table, string)
2644 struct bfd_hash_entry *entry;
2645 struct bfd_hash_table *table;
2648 struct aout_link_hash_entry *ret = (struct aout_link_hash_entry *) entry;
2650 /* Allocate the structure if it has not already been allocated by a
2652 if (ret == (struct aout_link_hash_entry *) NULL)
2653 ret = ((struct aout_link_hash_entry *)
2654 bfd_hash_allocate (table, sizeof (struct aout_link_hash_entry)));
2655 if (ret == (struct aout_link_hash_entry *) NULL)
2657 bfd_set_error (bfd_error_no_memory);
2658 return (struct bfd_hash_entry *) ret;
2661 /* Call the allocation method of the superclass. */
2662 ret = ((struct aout_link_hash_entry *)
2663 _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2667 /* Set local fields. */
2668 ret->written = false;
2672 return (struct bfd_hash_entry *) ret;
2675 /* Initialize an a.out link hash table. */
2678 NAME(aout,link_hash_table_init) (table, abfd, newfunc)
2679 struct aout_link_hash_table *table;
2681 struct bfd_hash_entry *(*newfunc) PARAMS ((struct bfd_hash_entry *,
2682 struct bfd_hash_table *,
2685 return _bfd_link_hash_table_init (&table->root, abfd, newfunc);
2688 /* Create an a.out link hash table. */
2690 struct bfd_link_hash_table *
2691 NAME(aout,link_hash_table_create) (abfd)
2694 struct aout_link_hash_table *ret;
2696 ret = ((struct aout_link_hash_table *)
2697 malloc (sizeof (struct aout_link_hash_table)));
2698 if (ret == (struct aout_link_hash_table *) NULL)
2700 bfd_set_error (bfd_error_no_memory);
2701 return (struct bfd_link_hash_table *) NULL;
2703 if (! NAME(aout,link_hash_table_init) (ret, abfd,
2704 NAME(aout,link_hash_newfunc)))
2707 return (struct bfd_link_hash_table *) NULL;
2712 /* Given an a.out BFD, add symbols to the global hash table as
2716 NAME(aout,link_add_symbols) (abfd, info)
2718 struct bfd_link_info *info;
2720 switch (bfd_get_format (abfd))
2723 return aout_link_add_object_symbols (abfd, info);
2725 return _bfd_generic_link_add_archive_symbols
2726 (abfd, info, aout_link_check_archive_element);
2728 bfd_set_error (bfd_error_wrong_format);
2733 /* Add symbols from an a.out object file. */
2736 aout_link_add_object_symbols (abfd, info)
2738 struct bfd_link_info *info;
2740 if (! aout_get_external_symbols (abfd))
2742 if (! aout_link_add_symbols (abfd, info))
2744 if (! info->keep_memory)
2746 if (! aout_link_free_symbols (abfd))
2752 /* Check a single archive element to see if we need to include it in
2753 the link. *PNEEDED is set according to whether this element is
2754 needed in the link or not. This is called from
2755 _bfd_generic_link_add_archive_symbols. */
2758 aout_link_check_archive_element (abfd, info, pneeded)
2760 struct bfd_link_info *info;
2763 if (! aout_get_external_symbols (abfd))
2766 if (! aout_link_check_ar_symbols (abfd, info, pneeded))
2771 if (! aout_link_add_symbols (abfd, info))
2775 if (! info->keep_memory || ! *pneeded)
2777 if (! aout_link_free_symbols (abfd))
2784 /* Free up the internal symbols read from an a.out file. */
2787 aout_link_free_symbols (abfd)
2790 if (obj_aout_external_syms (abfd) != (struct external_nlist *) NULL)
2792 free ((PTR) obj_aout_external_syms (abfd));
2793 obj_aout_external_syms (abfd) = (struct external_nlist *) NULL;
2795 if (obj_aout_external_strings (abfd) != (char *) NULL)
2797 free ((PTR) obj_aout_external_strings (abfd));
2798 obj_aout_external_strings (abfd) = (char *) NULL;
2803 /* Look through the internal symbols to see if this object file should
2804 be included in the link. We should include this object file if it
2805 defines any symbols which are currently undefined. If this object
2806 file defines a common symbol, then we may adjust the size of the
2807 known symbol but we do not include the object file in the link
2808 (unless there is some other reason to include it). */
2811 aout_link_check_ar_symbols (abfd, info, pneeded)
2813 struct bfd_link_info *info;
2816 register struct external_nlist *p;
2817 struct external_nlist *pend;
2822 /* Look through all the symbols. */
2823 p = obj_aout_external_syms (abfd);
2824 pend = p + obj_aout_external_sym_count (abfd);
2825 strings = obj_aout_external_strings (abfd);
2826 for (; p < pend; p++)
2828 int type = bfd_h_get_8 (abfd, p->e_type);
2830 struct bfd_link_hash_entry *h;
2832 /* Ignore symbols that are not externally visible. This is an
2833 optimization only, as we check the type more thoroughly
2835 if (((type & N_EXT) == 0
2836 || (type & N_STAB) != 0
2843 if (type == N_WARNING
2849 name = strings + GET_WORD (abfd, p->e_strx);
2850 h = bfd_link_hash_lookup (info->hash, name, false, false, true);
2852 /* We are only interested in symbols that are currently
2853 undefined or common. */
2854 if (h == (struct bfd_link_hash_entry *) NULL
2855 || (h->type != bfd_link_hash_undefined
2856 && h->type != bfd_link_hash_common))
2858 if (type == (N_INDR | N_EXT))
2863 if (type == (N_TEXT | N_EXT)
2864 || type == (N_DATA | N_EXT)
2865 || type == (N_BSS | N_EXT)
2866 || type == (N_ABS | N_EXT)
2867 || type == (N_INDR | N_EXT))
2869 /* This object file defines this symbol. We must link it
2870 in. This is true regardless of whether the current
2871 definition of the symbol is undefined or common. If the
2872 current definition is common, we have a case in which we
2873 have already seen an object file including
2875 and this object file from the archive includes
2877 In such a case we must include this object file.
2879 FIXME: The SunOS 4.1.3 linker will pull in the archive
2880 element if the symbol is defined in the .data section,
2881 but not if it is defined in the .text section. That
2882 seems a bit crazy to me, and I haven't implemented it.
2883 However, it might be correct. */
2884 if (! (*info->callbacks->add_archive_element) (info, abfd, name))
2890 if (type == (N_UNDF | N_EXT))
2894 value = GET_WORD (abfd, p->e_value);
2897 /* This symbol is common in the object from the archive
2899 if (h->type == bfd_link_hash_undefined)
2904 symbfd = h->u.undef.abfd;
2905 if (symbfd == (bfd *) NULL)
2907 /* This symbol was created as undefined from
2908 outside BFD. We assume that we should link
2909 in the object file. This is done for the -u
2910 option in the linker. */
2911 if (! (*info->callbacks->add_archive_element) (info,
2918 /* Turn the current link symbol into a common
2919 symbol. It is already on the undefs list. */
2920 h->type = bfd_link_hash_common;
2921 h->u.c.size = value;
2922 if (h->u.c.size != value)
2924 /* The size did not fit in the bitfield. */
2925 bfd_set_error (bfd_error_bad_value);
2929 /* FIXME: This isn't quite right. The maximum
2930 alignment of a common symbol should be set by the
2931 architecture of the output file, not of the input
2933 power = bfd_log2 (value);
2934 if (power > bfd_get_arch_info (abfd)->section_align_power)
2935 power = bfd_get_arch_info (abfd)->section_align_power;
2936 h->u.c.alignment_power = power;
2938 h->u.c.section = bfd_make_section_old_way (symbfd,
2943 /* Adjust the size of the common symbol if
2945 if (value > h->u.c.size)
2946 h->u.c.size = value;
2956 /* This symbol is weak but defined. We must pull it in if
2957 the current link symbol is undefined, but we don't want
2958 it if the current link symbol is common. */
2959 if (h->type == bfd_link_hash_undefined)
2961 if (! (*info->callbacks->add_archive_element) (info, abfd, name))
2969 /* We do not need this object file. */
2973 /* Add all symbols from an object file to the hash table. */
2976 aout_link_add_symbols (abfd, info)
2978 struct bfd_link_info *info;
2980 boolean (*add_one_symbol) PARAMS ((struct bfd_link_info *, bfd *,
2981 const char *, flagword, asection *,
2982 bfd_vma, const char *, boolean,
2984 struct bfd_link_hash_entry **));
2985 bfd_size_type sym_count;
2988 struct aout_link_hash_entry **sym_hash;
2989 register struct external_nlist *p;
2990 struct external_nlist *pend;
2992 sym_count = obj_aout_external_sym_count (abfd);
2993 strings = obj_aout_external_strings (abfd);
2994 if (info->keep_memory)
2999 /* We keep a list of the linker hash table entries that correspond
3000 to particular symbols. We could just look them up in the hash
3001 table, but keeping the list is more efficient. Perhaps this
3002 should be conditional on info->keep_memory. */
3003 sym_hash = ((struct aout_link_hash_entry **)
3006 * sizeof (struct aout_link_hash_entry *))));
3007 if (sym_hash == NULL && sym_count != 0)
3009 bfd_set_error (bfd_error_no_memory);
3012 obj_aout_sym_hashes (abfd) = sym_hash;
3014 if ((abfd->flags & DYNAMIC) != 0
3015 && aout_backend_info (abfd)->add_dynamic_symbols != NULL)
3017 if (! (*aout_backend_info (abfd)->add_dynamic_symbols) (abfd, info))
3021 add_one_symbol = aout_backend_info (abfd)->add_one_symbol;
3022 if (add_one_symbol == NULL)
3023 add_one_symbol = _bfd_generic_link_add_one_symbol;
3025 p = obj_aout_external_syms (abfd);
3026 pend = p + sym_count;
3027 for (; p < pend; p++, sym_hash++)
3038 type = bfd_h_get_8 (abfd, p->e_type);
3040 /* Ignore debugging symbols. */
3041 if ((type & N_STAB) != 0)
3044 name = strings + GET_WORD (abfd, p->e_strx);
3045 value = GET_WORD (abfd, p->e_value);
3062 /* Ignore symbols that are not externally visible. */
3065 /* Ignore local indirect symbol. */
3070 case N_UNDF | N_EXT:
3073 section = bfd_und_section_ptr;
3077 section = bfd_com_section_ptr;
3080 section = bfd_abs_section_ptr;
3082 case N_TEXT | N_EXT:
3083 section = obj_textsec (abfd);
3084 value -= bfd_get_section_vma (abfd, section);
3086 case N_DATA | N_EXT:
3087 case N_SETV | N_EXT:
3088 /* Treat N_SETV symbols as N_DATA symbol; see comment in
3089 translate_from_native_sym_flags. */
3090 section = obj_datasec (abfd);
3091 value -= bfd_get_section_vma (abfd, section);
3094 section = obj_bsssec (abfd);
3095 value -= bfd_get_section_vma (abfd, section);
3097 case N_INDR | N_EXT:
3098 /* An indirect symbol. The next symbol is the symbol
3099 which this one really is. */
3100 BFD_ASSERT (p + 1 < pend);
3102 string = strings + GET_WORD (abfd, p->e_strx);
3103 section = bfd_ind_section_ptr;
3104 flags |= BSF_INDIRECT;
3106 case N_COMM | N_EXT:
3107 section = bfd_com_section_ptr;
3109 case N_SETA: case N_SETA | N_EXT:
3110 section = bfd_abs_section_ptr;
3111 flags |= BSF_CONSTRUCTOR;
3113 case N_SETT: case N_SETT | N_EXT:
3114 section = obj_textsec (abfd);
3115 flags |= BSF_CONSTRUCTOR;
3116 value -= bfd_get_section_vma (abfd, section);
3118 case N_SETD: case N_SETD | N_EXT:
3119 section = obj_datasec (abfd);
3120 flags |= BSF_CONSTRUCTOR;
3121 value -= bfd_get_section_vma (abfd, section);
3123 case N_SETB: case N_SETB | N_EXT:
3124 section = obj_bsssec (abfd);
3125 flags |= BSF_CONSTRUCTOR;
3126 value -= bfd_get_section_vma (abfd, section);
3129 /* A warning symbol. The next symbol is the one to warn
3131 BFD_ASSERT (p + 1 < pend);
3134 name = strings + GET_WORD (abfd, p->e_strx);
3135 section = bfd_und_section_ptr;
3136 flags |= BSF_WARNING;
3139 section = bfd_und_section_ptr;
3143 section = bfd_abs_section_ptr;
3147 section = obj_textsec (abfd);
3148 value -= bfd_get_section_vma (abfd, section);
3152 section = obj_datasec (abfd);
3153 value -= bfd_get_section_vma (abfd, section);
3157 section = obj_bsssec (abfd);
3158 value -= bfd_get_section_vma (abfd, section);
3163 if (! ((*add_one_symbol)
3164 (info, abfd, name, flags, section, value, string, copy, false,
3165 (struct bfd_link_hash_entry **) sym_hash)))
3168 /* Restrict the maximum alignment of a common symbol based on
3169 the architecture, since a.out has no way to represent
3170 alignment requirements of a section in a .o file. FIXME:
3171 This isn't quite right: it should use the architecture of the
3172 output file, not the input files. */
3173 if ((*sym_hash)->root.type == bfd_link_hash_common
3174 && ((*sym_hash)->root.u.c.alignment_power >
3175 bfd_get_arch_info (abfd)->section_align_power))
3176 (*sym_hash)->root.u.c.alignment_power =
3177 bfd_get_arch_info (abfd)->section_align_power;
3179 /* If this is a set symbol, and we are not building sets, then
3180 it is possible for the hash entry to not have been set. In
3181 such a case, treat the symbol as not globally defined. */
3182 if ((*sym_hash)->root.type == bfd_link_hash_new)
3184 BFD_ASSERT ((flags & BSF_CONSTRUCTOR) != 0);
3188 if (type == (N_INDR | N_EXT) || type == N_WARNING)
3195 /* During the final link step we need to pass around a bunch of
3196 information, so we do it in an instance of this structure. */
3198 struct aout_final_link_info
3200 /* General link information. */
3201 struct bfd_link_info *info;
3204 /* Reloc file positions. */
3205 file_ptr treloff, dreloff;
3206 /* File position of symbols. */
3209 struct bfd_strtab_hash *strtab;
3210 /* A buffer large enough to hold the contents of any section. */
3212 /* A buffer large enough to hold the relocs of any section. */
3214 /* A buffer large enough to hold the symbol map of any input BFD. */
3216 /* A buffer large enough to hold output symbols of any input BFD. */
3217 struct external_nlist *output_syms;
3220 static boolean aout_link_input_bfd
3221 PARAMS ((struct aout_final_link_info *, bfd *input_bfd));
3222 static boolean aout_link_write_symbols
3223 PARAMS ((struct aout_final_link_info *, bfd *input_bfd));
3224 static boolean aout_link_write_other_symbol
3225 PARAMS ((struct aout_link_hash_entry *, PTR));
3226 static boolean aout_link_input_section
3227 PARAMS ((struct aout_final_link_info *, bfd *input_bfd,
3228 asection *input_section, file_ptr *reloff_ptr,
3229 bfd_size_type rel_size));
3230 static boolean aout_link_input_section_std
3231 PARAMS ((struct aout_final_link_info *, bfd *input_bfd,
3232 asection *input_section, struct reloc_std_external *,
3233 bfd_size_type rel_size, bfd_byte *contents));
3234 static boolean aout_link_input_section_ext
3235 PARAMS ((struct aout_final_link_info *, bfd *input_bfd,
3236 asection *input_section, struct reloc_ext_external *,
3237 bfd_size_type rel_size, bfd_byte *contents));
3238 static INLINE asection *aout_reloc_index_to_section
3239 PARAMS ((bfd *, int));
3240 static boolean aout_link_reloc_link_order
3241 PARAMS ((struct aout_final_link_info *, asection *,
3242 struct bfd_link_order *));
3244 /* Do the final link step. This is called on the output BFD. The
3245 INFO structure should point to a list of BFDs linked through the
3246 link_next field which can be used to find each BFD which takes part
3247 in the output. Also, each section in ABFD should point to a list
3248 of bfd_link_order structures which list all the input sections for
3249 the output section. */
3252 NAME(aout,final_link) (abfd, info, callback)
3254 struct bfd_link_info *info;
3255 void (*callback) PARAMS ((bfd *, file_ptr *, file_ptr *, file_ptr *));
3257 struct aout_final_link_info aout_info;
3259 bfd_size_type trsize, drsize;
3260 size_t max_contents_size;
3261 size_t max_relocs_size;
3262 size_t max_sym_count;
3263 bfd_size_type text_size;
3265 register struct bfd_link_order *p;
3267 boolean have_link_order_relocs;
3269 aout_info.info = info;
3270 aout_info.output_bfd = abfd;
3271 aout_info.contents = NULL;
3272 aout_info.relocs = NULL;
3274 /* Figure out the largest section size. Also, if generating
3275 relocateable output, count the relocs. */
3278 max_contents_size = 0;
3279 max_relocs_size = 0;
3281 for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
3285 if (info->relocateable)
3287 if (bfd_get_flavour (sub) == bfd_target_aout_flavour)
3289 trsize += exec_hdr (sub)->a_trsize;
3290 drsize += exec_hdr (sub)->a_drsize;
3294 /* FIXME: We need to identify the .text and .data sections
3295 and call get_reloc_upper_bound and canonicalize_reloc to
3296 work out the number of relocs needed, and then multiply
3297 by the reloc size. */
3302 sz = bfd_section_size (sub, obj_textsec (sub));
3303 if (sz > max_contents_size)
3304 max_contents_size = sz;
3305 sz = bfd_section_size (sub, obj_datasec (sub));
3306 if (sz > max_contents_size)
3307 max_contents_size = sz;
3309 sz = exec_hdr (sub)->a_trsize;
3310 if (sz > max_relocs_size)
3311 max_relocs_size = sz;
3312 sz = exec_hdr (sub)->a_drsize;
3313 if (sz > max_relocs_size)
3314 max_relocs_size = sz;
3316 sz = obj_aout_external_sym_count (sub);
3317 if (sz > max_sym_count)
3321 if (info->relocateable)
3323 if (obj_textsec (abfd) != (asection *) NULL)
3324 trsize += (_bfd_count_link_order_relocs (obj_textsec (abfd)
3326 * obj_reloc_entry_size (abfd));
3327 if (obj_datasec (abfd) != (asection *) NULL)
3328 drsize += (_bfd_count_link_order_relocs (obj_datasec (abfd)
3330 * obj_reloc_entry_size (abfd));
3333 exec_hdr (abfd)->a_trsize = trsize;
3334 exec_hdr (abfd)->a_drsize = drsize;
3336 exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd);
3338 /* Adjust the section sizes and vmas according to the magic number.
3339 This sets a_text, a_data and a_bss in the exec_hdr and sets the
3340 filepos for each section. */
3341 if (! NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end))
3344 /* The relocation and symbol file positions differ among a.out
3345 targets. We are passed a callback routine from the backend
3346 specific code to handle this.
3347 FIXME: At this point we do not know how much space the symbol
3348 table will require. This will not work for any (nonstandard)
3349 a.out target that needs to know the symbol table size before it
3350 can compute the relocation file positions. This may or may not
3351 be the case for the hp300hpux target, for example. */
3352 (*callback) (abfd, &aout_info.treloff, &aout_info.dreloff,
3354 obj_textsec (abfd)->rel_filepos = aout_info.treloff;
3355 obj_datasec (abfd)->rel_filepos = aout_info.dreloff;
3356 obj_sym_filepos (abfd) = aout_info.symoff;
3358 /* We keep a count of the symbols as we output them. */
3359 obj_aout_external_sym_count (abfd) = 0;
3361 /* We accumulate the string table as we write out the symbols. */
3362 aout_info.strtab = _bfd_stringtab_init ();
3363 if (aout_info.strtab == NULL)
3366 /* Allocate buffers to hold section contents and relocs. */
3367 aout_info.contents = (bfd_byte *) malloc (max_contents_size);
3368 aout_info.relocs = (PTR) malloc (max_relocs_size);
3369 aout_info.symbol_map = (int *) malloc (max_sym_count * sizeof (int *));
3370 aout_info.output_syms = ((struct external_nlist *)
3371 malloc ((max_sym_count + 1)
3372 * sizeof (struct external_nlist)));
3373 if ((aout_info.contents == NULL && max_contents_size != 0)
3374 || (aout_info.relocs == NULL && max_relocs_size != 0)
3375 || (aout_info.symbol_map == NULL && max_sym_count != 0)
3376 || aout_info.output_syms == NULL)
3378 bfd_set_error (bfd_error_no_memory);
3382 /* The most time efficient way to do the link would be to read all
3383 the input object files into memory and then sort out the
3384 information into the output file. Unfortunately, that will
3385 probably use too much memory. Another method would be to step
3386 through everything that composes the text section and write it
3387 out, and then everything that composes the data section and write
3388 it out, and then write out the relocs, and then write out the
3389 symbols. Unfortunately, that requires reading stuff from each
3390 input file several times, and we will not be able to keep all the
3391 input files open simultaneously, and reopening them will be slow.
3393 What we do is basically process one input file at a time. We do
3394 everything we need to do with an input file once--copy over the
3395 section contents, handle the relocation information, and write
3396 out the symbols--and then we throw away the information we read
3397 from it. This approach requires a lot of lseeks of the output
3398 file, which is unfortunate but still faster than reopening a lot
3401 We use the output_has_begun field of the input BFDs to see
3402 whether we have already handled it. */
3403 for (sub = info->input_bfds; sub != (bfd *) NULL; sub = sub->link_next)
3404 sub->output_has_begun = false;
3406 have_link_order_relocs = false;
3407 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
3409 for (p = o->link_order_head;
3410 p != (struct bfd_link_order *) NULL;
3413 if (p->type == bfd_indirect_link_order
3414 && (bfd_get_flavour (p->u.indirect.section->owner)
3415 == bfd_target_aout_flavour))
3419 input_bfd = p->u.indirect.section->owner;
3420 if (! input_bfd->output_has_begun)
3422 if (! aout_link_input_bfd (&aout_info, input_bfd))
3424 input_bfd->output_has_begun = true;
3427 else if (p->type == bfd_section_reloc_link_order
3428 || p->type == bfd_symbol_reloc_link_order)
3430 /* These are handled below. */
3431 have_link_order_relocs = true;
3435 if (! _bfd_default_link_order (abfd, info, o, p))
3441 /* Write out any symbols that we have not already written out. */
3442 aout_link_hash_traverse (aout_hash_table (info),
3443 aout_link_write_other_symbol,
3446 /* Now handle any relocs we were asked to create by the linker.
3447 These did not come from any input file. We must do these after
3448 we have written out all the symbols, so that we know the symbol
3450 if (have_link_order_relocs)
3452 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
3454 for (p = o->link_order_head;
3455 p != (struct bfd_link_order *) NULL;
3458 if (p->type == bfd_section_reloc_link_order
3459 || p->type == bfd_symbol_reloc_link_order)
3461 if (! aout_link_reloc_link_order (&aout_info, o, p))
3468 if (aout_info.contents != NULL)
3470 free (aout_info.contents);
3471 aout_info.contents = NULL;
3473 if (aout_info.relocs != NULL)
3475 free (aout_info.relocs);
3476 aout_info.relocs = NULL;
3478 if (aout_info.symbol_map != NULL)
3480 free (aout_info.symbol_map);
3481 aout_info.symbol_map = NULL;
3483 if (aout_info.output_syms != NULL)
3485 free (aout_info.output_syms);
3486 aout_info.output_syms = NULL;
3489 /* Finish up any dynamic linking we may be doing. */
3490 if (aout_backend_info (abfd)->finish_dynamic_link != NULL)
3492 if (! (*aout_backend_info (abfd)->finish_dynamic_link) (abfd, info))
3496 /* Update the header information. */
3497 abfd->symcount = obj_aout_external_sym_count (abfd);
3498 exec_hdr (abfd)->a_syms = abfd->symcount * EXTERNAL_NLIST_SIZE;
3499 obj_str_filepos (abfd) = obj_sym_filepos (abfd) + exec_hdr (abfd)->a_syms;
3500 obj_textsec (abfd)->reloc_count =
3501 exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd);
3502 obj_datasec (abfd)->reloc_count =
3503 exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd);
3505 /* Write out the string table. */
3506 if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0)
3508 return emit_stringtab (abfd, aout_info.strtab);
3511 if (aout_info.contents != NULL)
3512 free (aout_info.contents);
3513 if (aout_info.relocs != NULL)
3514 free (aout_info.relocs);
3515 if (aout_info.symbol_map != NULL)
3516 free (aout_info.symbol_map);
3517 if (aout_info.output_syms != NULL)
3518 free (aout_info.output_syms);
3522 /* Link an a.out input BFD into the output file. */
3525 aout_link_input_bfd (finfo, input_bfd)
3526 struct aout_final_link_info *finfo;
3529 bfd_size_type sym_count;
3531 BFD_ASSERT (bfd_get_format (input_bfd) == bfd_object);
3533 /* If this is a dynamic object, it may need special handling. */
3534 if ((input_bfd->flags & DYNAMIC) != 0
3535 && aout_backend_info (input_bfd)->link_dynamic_object != NULL)
3537 return ((*aout_backend_info (input_bfd)->link_dynamic_object)
3538 (finfo->info, input_bfd));
3541 /* Get the symbols. We probably have them already, unless
3542 finfo->info->keep_memory is false. */
3543 if (! aout_get_external_symbols (input_bfd))
3546 sym_count = obj_aout_external_sym_count (input_bfd);
3548 /* Write out the symbols and get a map of the new indices. The map
3549 is placed into finfo->symbol_map. */
3550 if (! aout_link_write_symbols (finfo, input_bfd))
3553 /* Relocate and write out the sections. These functions use the
3554 symbol map created by aout_link_write_symbols. */
3555 if (! aout_link_input_section (finfo, input_bfd,
3556 obj_textsec (input_bfd),
3558 exec_hdr (input_bfd)->a_trsize)
3559 || ! aout_link_input_section (finfo, input_bfd,
3560 obj_datasec (input_bfd),
3562 exec_hdr (input_bfd)->a_drsize))
3565 /* If we are not keeping memory, we don't need the symbols any
3566 longer. We still need them if we are keeping memory, because the
3567 strings in the hash table point into them. */
3568 if (! finfo->info->keep_memory)
3570 if (! aout_link_free_symbols (input_bfd))
3577 /* Adjust and write out the symbols for an a.out file. Set the new
3578 symbol indices into a symbol_map. */
3581 aout_link_write_symbols (finfo, input_bfd)
3582 struct aout_final_link_info *finfo;
3586 bfd_size_type sym_count;
3588 enum bfd_link_strip strip;
3589 enum bfd_link_discard discard;
3590 struct external_nlist *outsym;
3591 bfd_size_type strtab_index;
3592 register struct external_nlist *sym;
3593 struct external_nlist *sym_end;
3594 struct aout_link_hash_entry **sym_hash;
3597 boolean skip_indirect;
3599 output_bfd = finfo->output_bfd;
3600 sym_count = obj_aout_external_sym_count (input_bfd);
3601 strings = obj_aout_external_strings (input_bfd);
3602 strip = finfo->info->strip;
3603 discard = finfo->info->discard;
3604 outsym = finfo->output_syms;
3606 /* First write out a symbol for this object file, unless we are
3607 discarding such symbols. */
3608 if (strip != strip_all
3609 && (strip != strip_some
3610 || bfd_hash_lookup (finfo->info->keep_hash, input_bfd->filename,
3611 false, false) != NULL)
3612 && discard != discard_all)
3614 bfd_h_put_8 (output_bfd, N_TEXT, outsym->e_type);
3615 bfd_h_put_8 (output_bfd, 0, outsym->e_other);
3616 bfd_h_put_16 (output_bfd, (bfd_vma) 0, outsym->e_desc);
3617 strtab_index = add_to_stringtab (output_bfd, finfo->strtab,
3618 input_bfd->filename, false);
3619 if (strtab_index == (bfd_size_type) -1)
3621 PUT_WORD (output_bfd, strtab_index, outsym->e_strx);
3622 PUT_WORD (output_bfd,
3623 (bfd_get_section_vma (output_bfd,
3624 obj_textsec (input_bfd)->output_section)
3625 + obj_textsec (input_bfd)->output_offset),
3627 ++obj_aout_external_sym_count (output_bfd);
3632 skip_indirect = false;
3633 sym = obj_aout_external_syms (input_bfd);
3634 sym_end = sym + sym_count;
3635 sym_hash = obj_aout_sym_hashes (input_bfd);
3636 symbol_map = finfo->symbol_map;
3637 for (; sym < sym_end; sym++, sym_hash++, symbol_map++)
3641 struct aout_link_hash_entry *h;
3649 type = bfd_h_get_8 (input_bfd, sym->e_type);
3650 name = strings + GET_WORD (input_bfd, sym->e_strx);
3656 /* Pass this symbol through. It is the target of an
3657 indirect or warning symbol. */
3658 val = GET_WORD (input_bfd, sym->e_value);
3661 else if (skip_indirect)
3663 /* Skip this symbol, which is the target of an indirect
3664 symbol that we have changed to no longer be an indirect
3666 skip_indirect = false;
3671 struct aout_link_hash_entry *hresolve;
3673 /* We have saved the hash table entry for this symbol, if
3674 there is one. Note that we could just look it up again
3675 in the hash table, provided we first check that it is an
3679 /* If this is an indirect or warning symbol, then change
3680 hresolve to the base symbol. We also change *sym_hash so
3681 that the relocation routines relocate against the real
3684 if (h != (struct aout_link_hash_entry *) NULL
3685 && (h->root.type == bfd_link_hash_indirect
3686 || h->root.type == bfd_link_hash_warning))
3688 hresolve = (struct aout_link_hash_entry *) h->root.u.i.link;
3689 while (hresolve->root.type == bfd_link_hash_indirect
3690 || hresolve->root.type == bfd_link_hash_warning)
3691 hresolve = ((struct aout_link_hash_entry *)
3692 hresolve->root.u.i.link);
3693 *sym_hash = hresolve;
3696 /* If the symbol has already been written out, skip it. */
3697 if (h != (struct aout_link_hash_entry *) NULL
3698 && h->root.type != bfd_link_hash_warning
3701 if ((type & N_TYPE) == N_INDR)
3702 skip_indirect = true;
3703 *symbol_map = h->indx;
3707 /* See if we are stripping this symbol. */
3713 case strip_debugger:
3714 if ((type & N_STAB) != 0)
3718 if (bfd_hash_lookup (finfo->info->keep_hash, name, false, false)
3728 if (h != (struct aout_link_hash_entry *) NULL)
3733 /* Get the value of the symbol. */
3734 if ((type & N_TYPE) == N_TEXT
3736 symsec = obj_textsec (input_bfd);
3737 else if ((type & N_TYPE) == N_DATA
3739 symsec = obj_datasec (input_bfd);
3740 else if ((type & N_TYPE) == N_BSS
3742 symsec = obj_bsssec (input_bfd);
3743 else if ((type & N_TYPE) == N_ABS
3745 symsec = bfd_abs_section_ptr;
3746 else if (((type & N_TYPE) == N_INDR
3747 && (hresolve == (struct aout_link_hash_entry *) NULL
3748 || (hresolve->root.type != bfd_link_hash_defined
3749 && hresolve->root.type != bfd_link_hash_common)))
3750 || type == N_WARNING)
3752 /* Pass the next symbol through unchanged. The
3753 condition above for indirect symbols is so that if
3754 the indirect symbol was defined, we output it with
3755 the correct definition so the debugger will
3758 val = GET_WORD (input_bfd, sym->e_value);
3761 else if ((type & N_STAB) != 0)
3763 val = GET_WORD (input_bfd, sym->e_value);
3768 /* If we get here with an indirect symbol, it means that
3769 we are outputting it with a real definition. In such
3770 a case we do not want to output the next symbol,
3771 which is the target of the indirection. */
3772 if ((type & N_TYPE) == N_INDR)
3773 skip_indirect = true;
3777 /* We need to get the value from the hash table. We use
3778 hresolve so that if we have defined an indirect
3779 symbol we output the final definition. */
3780 if (h == (struct aout_link_hash_entry *) NULL)
3782 switch (type & N_TYPE)
3785 symsec = obj_textsec (input_bfd);
3788 symsec = obj_datasec (input_bfd);
3791 symsec = obj_bsssec (input_bfd);
3794 symsec = bfd_abs_section_ptr;
3801 else if (hresolve->root.type == bfd_link_hash_defined)
3803 asection *input_section;
3804 asection *output_section;
3806 /* This case means a common symbol which was turned
3807 into a defined symbol. */
3808 input_section = hresolve->root.u.def.section;
3809 output_section = input_section->output_section;
3810 BFD_ASSERT (bfd_is_abs_section (output_section)
3811 || output_section->owner == output_bfd);
3812 val = (hresolve->root.u.def.value
3813 + bfd_get_section_vma (output_bfd, output_section)
3814 + input_section->output_offset);
3816 /* Get the correct type based on the section. If
3817 this is a constructed set, force it to be
3818 globally visible. */
3827 if (output_section == obj_textsec (output_bfd))
3829 else if (output_section == obj_datasec (output_bfd))
3831 else if (output_section == obj_bsssec (output_bfd))
3836 else if (hresolve->root.type == bfd_link_hash_common)
3837 val = hresolve->root.u.c.size;
3838 else if (hresolve->root.type == bfd_link_hash_weak)
3846 if (symsec != (asection *) NULL)
3847 val = (symsec->output_section->vma
3848 + symsec->output_offset
3849 + (GET_WORD (input_bfd, sym->e_value)
3852 /* If this is a global symbol set the written flag, and if
3853 it is a local symbol see if we should discard it. */
3854 if (h != (struct aout_link_hash_entry *) NULL)
3857 h->indx = obj_aout_external_sym_count (output_bfd);
3859 else if ((type & N_TYPE) != N_SETT
3860 && (type & N_TYPE) != N_SETD
3861 && (type & N_TYPE) != N_SETB
3862 && (type & N_TYPE) != N_SETA)
3869 if (*name == *finfo->info->lprefix
3870 && (finfo->info->lprefix_len == 1
3871 || strncmp (name, finfo->info->lprefix,
3872 finfo->info->lprefix_len) == 0))
3887 /* Copy this symbol into the list of symbols we are going to
3889 bfd_h_put_8 (output_bfd, type, outsym->e_type);
3890 bfd_h_put_8 (output_bfd, bfd_h_get_8 (input_bfd, sym->e_other),
3892 bfd_h_put_16 (output_bfd, bfd_h_get_16 (input_bfd, sym->e_desc),
3895 if (! finfo->info->keep_memory)
3897 /* name points into a string table which we are going to
3898 free. If there is a hash table entry, use that string.
3899 Otherwise, copy name into memory. */
3900 if (h != (struct aout_link_hash_entry *) NULL)
3901 name = h->root.root.string;
3905 strtab_index = add_to_stringtab (output_bfd, finfo->strtab,
3907 if (strtab_index == (bfd_size_type) -1)
3909 PUT_WORD (output_bfd, strtab_index, outsym->e_strx);
3910 PUT_WORD (output_bfd, val, outsym->e_value);
3911 *symbol_map = obj_aout_external_sym_count (output_bfd);
3912 ++obj_aout_external_sym_count (output_bfd);
3916 /* Write out the output symbols we have just constructed. */
3917 if (outsym > finfo->output_syms)
3919 bfd_size_type outsym_count;
3921 if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0)
3923 outsym_count = outsym - finfo->output_syms;
3924 if (bfd_write ((PTR) finfo->output_syms,
3925 (bfd_size_type) EXTERNAL_NLIST_SIZE,
3926 (bfd_size_type) outsym_count, output_bfd)
3927 != outsym_count * EXTERNAL_NLIST_SIZE)
3929 finfo->symoff += outsym_count * EXTERNAL_NLIST_SIZE;
3935 /* Write out a symbol that was not associated with an a.out input
3939 aout_link_write_other_symbol (h, data)
3940 struct aout_link_hash_entry *h;
3943 struct aout_final_link_info *finfo = (struct aout_final_link_info *) data;
3947 struct external_nlist outsym;
3950 output_bfd = finfo->output_bfd;
3952 if (aout_backend_info (output_bfd)->write_dynamic_symbol != NULL)
3954 if (! ((*aout_backend_info (output_bfd)->write_dynamic_symbol)
3955 (output_bfd, finfo->info, h)))
3957 /* FIXME: No way to handle errors. */
3967 if (finfo->info->strip == strip_all
3968 || (finfo->info->strip == strip_some
3969 && bfd_hash_lookup (finfo->info->keep_hash, h->root.root.string,
3970 false, false) == NULL))
3973 switch (h->root.type)
3977 /* Avoid variable not initialized warnings. */
3979 case bfd_link_hash_new:
3980 /* This can happen for set symbols when sets are not being
3983 case bfd_link_hash_undefined:
3984 type = N_UNDF | N_EXT;
3987 case bfd_link_hash_defined:
3991 sec = h->root.u.def.section->output_section;
3992 BFD_ASSERT (bfd_is_abs_section (sec)
3993 || sec->owner == output_bfd);
3994 if (sec == obj_textsec (output_bfd))
3995 type = N_TEXT | N_EXT;
3996 else if (sec == obj_datasec (output_bfd))
3997 type = N_DATA | N_EXT;
3998 else if (sec == obj_bsssec (output_bfd))
3999 type = N_BSS | N_EXT;
4001 type = N_ABS | N_EXT;
4002 val = (h->root.u.def.value
4004 + h->root.u.def.section->output_offset);
4007 case bfd_link_hash_common:
4008 type = N_UNDF | N_EXT;
4009 val = h->root.u.c.size;
4011 case bfd_link_hash_weak:
4014 case bfd_link_hash_indirect:
4015 case bfd_link_hash_warning:
4016 /* FIXME: Ignore these for now. The circumstances under which
4017 they should be written out are not clear to me. */
4021 bfd_h_put_8 (output_bfd, type, outsym.e_type);
4022 bfd_h_put_8 (output_bfd, 0, outsym.e_other);
4023 bfd_h_put_16 (output_bfd, 0, outsym.e_desc);
4024 indx = add_to_stringtab (output_bfd, finfo->strtab, h->root.root.string,
4026 if (indx == (bfd_size_type) -1)
4028 /* FIXME: No way to handle errors. */
4031 PUT_WORD (output_bfd, indx, outsym.e_strx);
4032 PUT_WORD (output_bfd, val, outsym.e_value);
4034 if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0
4035 || bfd_write ((PTR) &outsym, (bfd_size_type) EXTERNAL_NLIST_SIZE,
4036 (bfd_size_type) 1, output_bfd) != EXTERNAL_NLIST_SIZE)
4038 /* FIXME: No way to handle errors. */
4042 finfo->symoff += EXTERNAL_NLIST_SIZE;
4043 h->indx = obj_aout_external_sym_count (output_bfd);
4044 ++obj_aout_external_sym_count (output_bfd);
4049 /* Link an a.out section into the output file. */
4052 aout_link_input_section (finfo, input_bfd, input_section, reloff_ptr,
4054 struct aout_final_link_info *finfo;
4056 asection *input_section;
4057 file_ptr *reloff_ptr;
4058 bfd_size_type rel_size;
4060 bfd_size_type input_size;
4063 /* Get the section contents. */
4064 input_size = bfd_section_size (input_bfd, input_section);
4065 if (! bfd_get_section_contents (input_bfd, input_section,
4066 (PTR) finfo->contents,
4067 (file_ptr) 0, input_size))
4070 /* Read in the relocs if we haven't already done it. */
4071 if (aout_section_data (input_section) != NULL
4072 && aout_section_data (input_section)->relocs != NULL)
4073 relocs = aout_section_data (input_section)->relocs;
4076 relocs = finfo->relocs;
4077 if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0
4078 || bfd_read (relocs, 1, rel_size, input_bfd) != rel_size)
4082 /* Relocate the section contents. */
4083 if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE)
4085 if (! aout_link_input_section_std (finfo, input_bfd, input_section,
4086 (struct reloc_std_external *) relocs,
4087 rel_size, finfo->contents))
4092 if (! aout_link_input_section_ext (finfo, input_bfd, input_section,
4093 (struct reloc_ext_external *) relocs,
4094 rel_size, finfo->contents))
4098 /* Write out the section contents. */
4099 if (! bfd_set_section_contents (finfo->output_bfd,
4100 input_section->output_section,
4101 (PTR) finfo->contents,
4102 input_section->output_offset,
4106 /* If we are producing relocateable output, the relocs were
4107 modified, and we now write them out. */
4108 if (finfo->info->relocateable)
4110 if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0)
4112 if (bfd_write (relocs, (bfd_size_type) 1, rel_size, finfo->output_bfd)
4115 *reloff_ptr += rel_size;
4117 /* Assert that the relocs have not run into the symbols, and
4118 that if these are the text relocs they have not run into the
4120 BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd)
4121 && (reloff_ptr != &finfo->treloff
4123 <= obj_datasec (finfo->output_bfd)->rel_filepos)));
4129 /* Get the section corresponding to a reloc index. */
4131 static INLINE asection *
4132 aout_reloc_index_to_section (abfd, indx)
4136 switch (indx & N_TYPE)
4139 return obj_textsec (abfd);
4141 return obj_datasec (abfd);
4143 return obj_bsssec (abfd);
4146 return bfd_abs_section_ptr;
4152 /* Relocate an a.out section using standard a.out relocs. */
4155 aout_link_input_section_std (finfo, input_bfd, input_section, relocs,
4157 struct aout_final_link_info *finfo;
4159 asection *input_section;
4160 struct reloc_std_external *relocs;
4161 bfd_size_type rel_size;
4164 boolean (*check_dynamic_reloc) PARAMS ((struct bfd_link_info *,
4166 struct aout_link_hash_entry *,
4169 boolean relocateable;
4170 struct external_nlist *syms;
4172 struct aout_link_hash_entry **sym_hashes;
4174 bfd_size_type reloc_count;
4175 register struct reloc_std_external *rel;
4176 struct reloc_std_external *rel_end;
4178 output_bfd = finfo->output_bfd;
4179 check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc;
4181 BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE);
4182 BFD_ASSERT (input_bfd->xvec->header_byteorder_big_p
4183 == output_bfd->xvec->header_byteorder_big_p);
4185 relocateable = finfo->info->relocateable;
4186 syms = obj_aout_external_syms (input_bfd);
4187 strings = obj_aout_external_strings (input_bfd);
4188 sym_hashes = obj_aout_sym_hashes (input_bfd);
4189 symbol_map = finfo->symbol_map;
4191 reloc_count = rel_size / RELOC_STD_SIZE;
4193 rel_end = rel + reloc_count;
4194 for (; rel < rel_end; rel++)
4205 reloc_howto_type *howto;
4207 bfd_reloc_status_type r;
4209 r_addr = GET_SWORD (input_bfd, rel->r_address);
4211 #ifdef MY_reloc_howto
4212 howto = MY_reloc_howto(input_bfd, rel, r_index, r_extern, r_pcrel);
4214 if (input_bfd->xvec->header_byteorder_big_p)
4216 r_index = ((rel->r_index[0] << 16)
4217 | (rel->r_index[1] << 8)
4219 r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
4220 r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
4221 r_baserel = (0 != (rel->r_type[0] & RELOC_STD_BITS_BASEREL_BIG));
4222 r_jmptable= (0 != (rel->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG));
4223 r_relative= (0 != (rel->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG));
4224 r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_BIG)
4225 >> RELOC_STD_BITS_LENGTH_SH_BIG);
4229 r_index = ((rel->r_index[2] << 16)
4230 | (rel->r_index[1] << 8)
4232 r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
4233 r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
4234 r_baserel = (0 != (rel->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE));
4235 r_jmptable= (0 != (rel->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE));
4236 r_relative= (0 != (rel->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE));
4237 r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE)
4238 >> RELOC_STD_BITS_LENGTH_SH_LITTLE);
4241 howto_idx = r_length + 4 * r_pcrel + 8 * r_baserel
4242 + 16 * r_jmptable + 32 * r_relative;
4243 BFD_ASSERT (howto_idx < TABLE_SIZE (howto_table_std));
4244 howto = howto_table_std + howto_idx;
4249 /* We are generating a relocateable output file, and must
4250 modify the reloc accordingly. */
4253 struct aout_link_hash_entry *h;
4255 /* If we know the symbol this relocation is against,
4256 convert it into a relocation against a section. This
4257 is what the native linker does. */
4258 h = sym_hashes[r_index];
4259 if (h != (struct aout_link_hash_entry *) NULL
4260 && h->root.type == bfd_link_hash_defined)
4262 asection *output_section;
4264 /* Change the r_extern value. */
4265 if (output_bfd->xvec->header_byteorder_big_p)
4266 rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_BIG;
4268 rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_LITTLE;
4270 /* Compute a new r_index. */
4271 output_section = h->root.u.def.section->output_section;
4272 if (output_section == obj_textsec (output_bfd))
4274 else if (output_section == obj_datasec (output_bfd))
4276 else if (output_section == obj_bsssec (output_bfd))
4281 /* Add the symbol value and the section VMA to the
4282 addend stored in the contents. */
4283 relocation = (h->root.u.def.value
4284 + output_section->vma
4285 + h->root.u.def.section->output_offset);
4289 /* We must change r_index according to the symbol
4291 r_index = symbol_map[r_index];
4297 name = strings + GET_WORD (input_bfd,
4298 syms[r_index].e_strx);
4299 if (! ((*finfo->info->callbacks->unattached_reloc)
4300 (finfo->info, name, input_bfd, input_section,
4309 /* Write out the new r_index value. */
4310 if (output_bfd->xvec->header_byteorder_big_p)
4312 rel->r_index[0] = r_index >> 16;
4313 rel->r_index[1] = r_index >> 8;
4314 rel->r_index[2] = r_index;
4318 rel->r_index[2] = r_index >> 16;
4319 rel->r_index[1] = r_index >> 8;
4320 rel->r_index[0] = r_index;
4327 /* This is a relocation against a section. We must
4328 adjust by the amount that the section moved. */
4329 section = aout_reloc_index_to_section (input_bfd, r_index);
4330 relocation = (section->output_section->vma
4331 + section->output_offset
4335 /* Change the address of the relocation. */
4336 PUT_WORD (output_bfd,
4337 r_addr + input_section->output_offset,
4340 /* Adjust a PC relative relocation by removing the reference
4341 to the original address in the section and including the
4342 reference to the new address. */
4344 relocation -= (input_section->output_section->vma
4345 + input_section->output_offset
4346 - input_section->vma);
4348 if (relocation == 0)
4351 r = _bfd_relocate_contents (howto,
4352 input_bfd, relocation,
4357 /* We are generating an executable, and must do a full
4361 struct aout_link_hash_entry *h;
4363 h = sym_hashes[r_index];
4365 if (check_dynamic_reloc != NULL)
4369 if (! ((*check_dynamic_reloc)
4370 (finfo->info, input_bfd, input_section, h,
4377 if (h != (struct aout_link_hash_entry *) NULL
4378 && h->root.type == bfd_link_hash_defined)
4380 relocation = (h->root.u.def.value
4381 + h->root.u.def.section->output_section->vma
4382 + h->root.u.def.section->output_offset);
4384 else if (h != (struct aout_link_hash_entry *) NULL
4385 && h->root.type == bfd_link_hash_weak)
4391 name = strings + GET_WORD (input_bfd, syms[r_index].e_strx);
4392 if (! ((*finfo->info->callbacks->undefined_symbol)
4393 (finfo->info, name, input_bfd, input_section,
4403 section = aout_reloc_index_to_section (input_bfd, r_index);
4404 relocation = (section->output_section->vma
4405 + section->output_offset
4408 relocation += input_section->vma;
4411 r = _bfd_final_link_relocate (howto,
4412 input_bfd, input_section,
4413 contents, r_addr, relocation,
4417 if (r != bfd_reloc_ok)
4422 case bfd_reloc_outofrange:
4424 case bfd_reloc_overflow:
4429 name = strings + GET_WORD (input_bfd,
4430 syms[r_index].e_strx);
4435 s = aout_reloc_index_to_section (input_bfd, r_index);
4436 name = bfd_section_name (input_bfd, s);
4438 if (! ((*finfo->info->callbacks->reloc_overflow)
4439 (finfo->info, name, howto->name,
4440 (bfd_vma) 0, input_bfd, input_section, r_addr)))
4451 /* Relocate an a.out section using extended a.out relocs. */
4454 aout_link_input_section_ext (finfo, input_bfd, input_section, relocs,
4456 struct aout_final_link_info *finfo;
4458 asection *input_section;
4459 struct reloc_ext_external *relocs;
4460 bfd_size_type rel_size;
4463 boolean (*check_dynamic_reloc) PARAMS ((struct bfd_link_info *,
4465 struct aout_link_hash_entry *,
4468 boolean relocateable;
4469 struct external_nlist *syms;
4471 struct aout_link_hash_entry **sym_hashes;
4473 bfd_size_type reloc_count;
4474 register struct reloc_ext_external *rel;
4475 struct reloc_ext_external *rel_end;
4477 output_bfd = finfo->output_bfd;
4478 check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc;
4480 BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_EXT_SIZE);
4481 BFD_ASSERT (input_bfd->xvec->header_byteorder_big_p
4482 == output_bfd->xvec->header_byteorder_big_p);
4484 relocateable = finfo->info->relocateable;
4485 syms = obj_aout_external_syms (input_bfd);
4486 strings = obj_aout_external_strings (input_bfd);
4487 sym_hashes = obj_aout_sym_hashes (input_bfd);
4488 symbol_map = finfo->symbol_map;
4490 reloc_count = rel_size / RELOC_EXT_SIZE;
4492 rel_end = rel + reloc_count;
4493 for (; rel < rel_end; rel++)
4502 r_addr = GET_SWORD (input_bfd, rel->r_address);
4504 if (input_bfd->xvec->header_byteorder_big_p)
4506 r_index = ((rel->r_index[0] << 16)
4507 | (rel->r_index[1] << 8)
4509 r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG));
4510 r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
4511 >> RELOC_EXT_BITS_TYPE_SH_BIG);
4515 r_index = ((rel->r_index[2] << 16)
4516 | (rel->r_index[1] << 8)
4518 r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE));
4519 r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
4520 >> RELOC_EXT_BITS_TYPE_SH_LITTLE);
4523 r_addend = GET_SWORD (input_bfd, rel->r_addend);
4525 BFD_ASSERT (r_type >= 0
4526 && r_type < TABLE_SIZE (howto_table_ext));
4530 /* We are generating a relocateable output file, and must
4531 modify the reloc accordingly. */
4534 struct aout_link_hash_entry *h;
4536 /* If we know the symbol this relocation is against,
4537 convert it into a relocation against a section. This
4538 is what the native linker does. */
4539 h = sym_hashes[r_index];
4540 if (h != (struct aout_link_hash_entry *) NULL
4541 && h->root.type == bfd_link_hash_defined)
4543 asection *output_section;
4545 /* Change the r_extern value. */
4546 if (output_bfd->xvec->header_byteorder_big_p)
4547 rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_BIG;
4549 rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_LITTLE;
4551 /* Compute a new r_index. */
4552 output_section = h->root.u.def.section->output_section;
4553 if (output_section == obj_textsec (output_bfd))
4555 else if (output_section == obj_datasec (output_bfd))
4557 else if (output_section == obj_bsssec (output_bfd))
4562 /* Add the symbol value and the section VMA to the
4564 relocation = (h->root.u.def.value
4565 + output_section->vma
4566 + h->root.u.def.section->output_offset);
4568 /* Now RELOCATION is the VMA of the final
4569 destination. If this is a PC relative reloc,
4570 then ADDEND is the negative of the source VMA.
4571 We want to set ADDEND to the difference between
4572 the destination VMA and the source VMA, which
4573 means we must adjust RELOCATION by the change in
4574 the source VMA. This is done below. */
4578 /* We must change r_index according to the symbol
4580 r_index = symbol_map[r_index];
4587 + GET_WORD (input_bfd, syms[r_index].e_strx));
4588 if (! ((*finfo->info->callbacks->unattached_reloc)
4589 (finfo->info, name, input_bfd, input_section,
4597 /* If this is a PC relative reloc, then the addend
4598 is the negative of the source VMA. We must
4599 adjust it by the change in the source VMA. This
4603 /* Write out the new r_index value. */
4604 if (output_bfd->xvec->header_byteorder_big_p)
4606 rel->r_index[0] = r_index >> 16;
4607 rel->r_index[1] = r_index >> 8;
4608 rel->r_index[2] = r_index;
4612 rel->r_index[2] = r_index >> 16;
4613 rel->r_index[1] = r_index >> 8;
4614 rel->r_index[0] = r_index;
4621 /* This is a relocation against a section. We must
4622 adjust by the amount that the section moved. */
4623 section = aout_reloc_index_to_section (input_bfd, r_index);
4624 relocation = (section->output_section->vma
4625 + section->output_offset
4628 /* If this is a PC relative reloc, then the addend is
4629 the difference in VMA between the destination and the
4630 source. We have just adjusted for the change in VMA
4631 of the destination, so we must also adjust by the
4632 change in VMA of the source. This is done below. */
4635 /* As described above, we must always adjust a PC relative
4636 reloc by the change in VMA of the source. */
4637 if (howto_table_ext[r_type].pc_relative)
4638 relocation -= (input_section->output_section->vma
4639 + input_section->output_offset
4640 - input_section->vma);
4642 /* Change the addend if necessary. */
4643 if (relocation != 0)
4644 PUT_WORD (output_bfd, r_addend + relocation, rel->r_addend);
4646 /* Change the address of the relocation. */
4647 PUT_WORD (output_bfd,
4648 r_addr + input_section->output_offset,
4653 bfd_reloc_status_type r;
4655 /* We are generating an executable, and must do a full
4659 struct aout_link_hash_entry *h;
4661 h = sym_hashes[r_index];
4663 if (check_dynamic_reloc != NULL)
4667 if (! ((*check_dynamic_reloc)
4668 (finfo->info, input_bfd, input_section, h,
4675 if (h != (struct aout_link_hash_entry *) NULL
4676 && h->root.type == bfd_link_hash_defined)
4678 relocation = (h->root.u.def.value
4679 + h->root.u.def.section->output_section->vma
4680 + h->root.u.def.section->output_offset);
4682 else if (h != (struct aout_link_hash_entry *) NULL
4683 && h->root.type == bfd_link_hash_weak)
4689 name = strings + GET_WORD (input_bfd, syms[r_index].e_strx);
4690 if (! ((*finfo->info->callbacks->undefined_symbol)
4691 (finfo->info, name, input_bfd, input_section,
4701 section = aout_reloc_index_to_section (input_bfd, r_index);
4703 /* If this is a PC relative reloc, then R_ADDEND is the
4704 difference between the two vmas, or
4705 old_dest_sec + old_dest_off - (old_src_sec + old_src_off)
4707 old_dest_sec == section->vma
4709 old_src_sec == input_section->vma
4711 old_src_off == r_addr
4713 _bfd_final_link_relocate expects RELOCATION +
4714 R_ADDEND to be the VMA of the destination minus
4715 r_addr (the minus r_addr is because this relocation
4716 is not pcrel_offset, which is a bit confusing and
4717 should, perhaps, be changed), or
4720 new_dest_sec == output_section->vma + output_offset
4721 We arrange for this to happen by setting RELOCATION to
4722 new_dest_sec + old_src_sec - old_dest_sec
4724 If this is not a PC relative reloc, then R_ADDEND is
4725 simply the VMA of the destination, so we set
4726 RELOCATION to the change in the destination VMA, or
4727 new_dest_sec - old_dest_sec
4729 relocation = (section->output_section->vma
4730 + section->output_offset
4732 if (howto_table_ext[r_type].pc_relative)
4733 relocation += input_section->vma;
4736 r = _bfd_final_link_relocate (howto_table_ext + r_type,
4737 input_bfd, input_section,
4738 contents, r_addr, relocation,
4740 if (r != bfd_reloc_ok)
4745 case bfd_reloc_outofrange:
4747 case bfd_reloc_overflow:
4752 name = strings + GET_WORD (input_bfd,
4753 syms[r_index].e_strx);
4758 s = aout_reloc_index_to_section (input_bfd, r_index);
4759 name = bfd_section_name (input_bfd, s);
4761 if (! ((*finfo->info->callbacks->reloc_overflow)
4762 (finfo->info, name, howto_table_ext[r_type].name,
4763 r_addend, input_bfd, input_section, r_addr)))
4775 /* Handle a link order which is supposed to generate a reloc. */
4778 aout_link_reloc_link_order (finfo, o, p)
4779 struct aout_final_link_info *finfo;
4781 struct bfd_link_order *p;
4783 struct bfd_link_order_reloc *pr;
4786 const reloc_howto_type *howto;
4787 file_ptr *reloff_ptr;
4788 struct reloc_std_external srel;
4789 struct reloc_ext_external erel;
4794 if (p->type == bfd_section_reloc_link_order)
4797 if (bfd_is_abs_section (pr->u.section))
4798 r_index = N_ABS | N_EXT;
4801 BFD_ASSERT (pr->u.section->owner == finfo->output_bfd);
4802 r_index = pr->u.section->target_index;
4807 struct aout_link_hash_entry *h;
4809 BFD_ASSERT (p->type == bfd_symbol_reloc_link_order);
4811 h = aout_link_hash_lookup (aout_hash_table (finfo->info),
4812 pr->u.name, false, false, true);
4813 if (h != (struct aout_link_hash_entry *) NULL
4818 if (! ((*finfo->info->callbacks->unattached_reloc)
4819 (finfo->info, pr->u.name, (bfd *) NULL,
4820 (asection *) NULL, (bfd_vma) 0)))
4826 howto = bfd_reloc_type_lookup (finfo->output_bfd, pr->reloc);
4827 if (howto == (const reloc_howto_type *) NULL)
4829 bfd_set_error (bfd_error_bad_value);
4833 if (o == obj_textsec (finfo->output_bfd))
4834 reloff_ptr = &finfo->treloff;
4835 else if (o == obj_datasec (finfo->output_bfd))
4836 reloff_ptr = &finfo->dreloff;
4840 if (obj_reloc_entry_size (finfo->output_bfd) == RELOC_STD_SIZE)
4849 MY_put_reloc(finfo->output_bfd, r_extern, r_index, p->offset, howto, &srel);
4851 r_pcrel = howto->pc_relative;
4852 r_baserel = (howto->type & 8) != 0;
4853 r_jmptable = (howto->type & 16) != 0;
4854 r_relative = (howto->type & 32) != 0;
4855 r_length = howto->size;
4857 PUT_WORD (finfo->output_bfd, p->offset, srel.r_address);
4858 if (finfo->output_bfd->xvec->header_byteorder_big_p)
4860 srel.r_index[0] = r_index >> 16;
4861 srel.r_index[1] = r_index >> 8;
4862 srel.r_index[2] = r_index;
4864 ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0)
4865 | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0)
4866 | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0)
4867 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0)
4868 | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0)
4869 | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG));
4873 srel.r_index[2] = r_index >> 16;
4874 srel.r_index[1] = r_index >> 8;
4875 srel.r_index[0] = r_index;
4877 ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0)
4878 | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0)
4879 | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0)
4880 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0)
4881 | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0)
4882 | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE));
4885 rel_ptr = (PTR) &srel;
4887 /* We have to write the addend into the object file, since
4888 standard a.out relocs are in place. It would be more
4889 reliable if we had the current contents of the file here,
4890 rather than assuming zeroes, but we can't read the file since
4891 it was opened using bfd_openw. */
4892 if (pr->addend != 0)
4895 bfd_reloc_status_type r;
4899 size = bfd_get_reloc_size (howto);
4900 buf = (bfd_byte *) bfd_zmalloc (size);
4901 if (buf == (bfd_byte *) NULL)
4903 bfd_set_error (bfd_error_no_memory);
4906 r = _bfd_relocate_contents (howto, finfo->output_bfd,
4913 case bfd_reloc_outofrange:
4915 case bfd_reloc_overflow:
4916 if (! ((*finfo->info->callbacks->reloc_overflow)
4918 (p->type == bfd_section_reloc_link_order
4919 ? bfd_section_name (finfo->output_bfd,
4922 howto->name, pr->addend, (bfd *) NULL,
4923 (asection *) NULL, (bfd_vma) 0)))
4930 ok = bfd_set_section_contents (finfo->output_bfd, o,
4932 (file_ptr) p->offset,
4941 PUT_WORD (finfo->output_bfd, p->offset, erel.r_address);
4943 if (finfo->output_bfd->xvec->header_byteorder_big_p)
4945 erel.r_index[0] = r_index >> 16;
4946 erel.r_index[1] = r_index >> 8;
4947 erel.r_index[2] = r_index;
4949 ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0)
4950 | (howto->type << RELOC_EXT_BITS_TYPE_SH_BIG));
4954 erel.r_index[2] = r_index >> 16;
4955 erel.r_index[1] = r_index >> 8;
4956 erel.r_index[0] = r_index;
4958 (r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0)
4959 | (howto->type << RELOC_EXT_BITS_TYPE_SH_LITTLE);
4962 PUT_WORD (finfo->output_bfd, pr->addend, erel.r_addend);
4964 rel_ptr = (PTR) &erel;
4967 if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0
4968 || (bfd_write (rel_ptr, (bfd_size_type) 1,
4969 obj_reloc_entry_size (finfo->output_bfd),
4971 != obj_reloc_entry_size (finfo->output_bfd)))
4974 *reloff_ptr += obj_reloc_entry_size (finfo->output_bfd);
4976 /* Assert that the relocs have not run into the symbols, and that n
4977 the text relocs have not run into the data relocs. */
4978 BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd)
4979 && (reloff_ptr != &finfo->treloff
4981 <= obj_datasec (finfo->output_bfd)->rel_filepos)));