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252b5132 1/* BFD semi-generic back-end for a.out binaries.
219d1afa 2 Copyright (C) 1990-2018 Free Software Foundation, Inc.
252b5132
RH		 3 Written by Cygnus Support.
4
f7c33884 5 This file is part of BFD, the Binary File Descriptor library.
252b5132 6
f7c33884
NC		 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
cd123cb7 9 the Free Software Foundation; either version 3 of the License, or
f7c33884 10 (at your option) any later version.
252b5132 11
f7c33884
NC		 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.
252b5132 16
f7c33884
NC		 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
cd123cb7
NC		 19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
252b5132
RH		 21
22/*
23SECTION
24 a.out backends
25
252b5132
RH		 26DESCRIPTION
27
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
31 information.
32
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
a8eb42a8
AM		 36 adds to the basic a.out functions support for sun3, sun4, and
37 386 a.out files, to create a target jump vector for a specific
38 target.
252b5132
RH		 39
40 This information is further split out into more specific files
41 for each machine, including @file{sunos.c} for sun3 and sun4,
5972ac73 42 and @file{demo64.c} for a demonstration of a 64 bit a.out format.
252b5132
RH		 43
44 The base file @file{aoutx.h} defines general mechanisms for
45 reading and writing records to and from disk and various
46 other methods which BFD requires. It is included by
47 @file{aout32.c} and @file{aout64.c} to form the names
48 <<aout_32_swap_exec_header_in>>, <<aout_64_swap_exec_header_in>>, etc.
49
50 As an example, this is what goes on to make the back end for a
51 sun4, from @file{aout32.c}:
52
53| #define ARCH_SIZE 32
54| #include "aoutx.h"
55
56 Which exports names:
57
58| ...
59| aout_32_canonicalize_reloc
60| aout_32_find_nearest_line
61| aout_32_get_lineno
62| aout_32_get_reloc_upper_bound
63| ...
64
65 from @file{sunos.c}:
66
67| #define TARGET_NAME "a.out-sunos-big"
6d00b590 68| #define VECNAME sparc_aout_sunos_be_vec
252b5132
RH		 69| #include "aoutf1.h"
70
71 requires all the names from @file{aout32.c}, and produces the jump vector
72
6d00b590 73| sparc_aout_sunos_be_vec
252b5132
RH		 74
75 The file @file{host-aout.c} is a special case. It is for a large set
76 of hosts that use ``more or less standard'' a.out files, and
77 for which cross-debugging is not interesting. It uses the
78 standard 32-bit a.out support routines, but determines the
79 file offsets and addresses of the text, data, and BSS
80 sections, the machine architecture and machine type, and the
81 entry point address, in a host-dependent manner. Once these
82 values have been determined, generic code is used to handle
83 the object file.
84
85 When porting it to run on a new system, you must supply:
86
87| HOST_PAGE_SIZE
88| HOST_SEGMENT_SIZE
89| HOST_MACHINE_ARCH (optional)
90| HOST_MACHINE_MACHINE (optional)
91| HOST_TEXT_START_ADDR
92| HOST_STACK_END_ADDR
93
94 in the file @file{../include/sys/h-@var{XXX}.h} (for your host). These
95 values, plus the structures and macros defined in @file{a.out.h} on
96 your host system, will produce a BFD target that will access
97 ordinary a.out files on your host. To configure a new machine
98 to use @file{host-aout.c}, specify:
99
100| TDEFAULTS = -DDEFAULT_VECTOR=host_aout_big_vec
101| TDEPFILES= host-aout.o trad-core.o
102
1110793a 103 in the @file{config/@var{XXX}.mt} file, and modify @file{configure.ac}
252b5132
RH		 104 to use the
105 @file{@var{XXX}.mt} file (by setting "<<bfd_target=XXX>>") when your
5ed6aba4 106 configuration is selected. */
252b5132
RH		 107
108/* Some assumptions:
109 * Any BFD with D_PAGED set is ZMAGIC, and vice versa.
110 Doesn't matter what the setting of WP_TEXT is on output, but it'll
111 get set on input.
112 * Any BFD with D_PAGED clear and WP_TEXT set is NMAGIC.
113 * Any BFD with both flags clear is OMAGIC.
114 (Just want to make these explicit, so the conditions tested in this
115 file make sense if you're more familiar with a.out than with BFD.) */
116
117#define KEEPIT udata.i
118
252b5132 119#include "sysdep.h"
3db64b00 120#include "bfd.h"
3882b010 121#include "safe-ctype.h"
252b5132
RH		 122#include "bfdlink.h"
123
124#include "libaout.h"
125#include "libbfd.h"
126#include "aout/aout64.h"
127#include "aout/stab_gnu.h"
128#include "aout/ar.h"
129
252b5132
RH		 130/*
131SUBSECTION
132 Relocations
133
134DESCRIPTION
135 The file @file{aoutx.h} provides for both the @emph{standard}
136 and @emph{extended} forms of a.out relocation records.
137
a8eb42a8
AM		 138 The standard records contain only an address, a symbol index,
139 and a type field. The extended records also have a full
140 integer for an addend. */
252b5132 141
252b5132
RH		 142#ifndef CTOR_TABLE_RELOC_HOWTO
143#define CTOR_TABLE_RELOC_IDX 2
923f08ff
AM		 144#define CTOR_TABLE_RELOC_HOWTO(BFD) \
145 ((obj_reloc_entry_size (BFD) == RELOC_EXT_SIZE \
146 ? howto_table_ext : howto_table_std) \
147 + CTOR_TABLE_RELOC_IDX)
252b5132
RH		 148#endif
149
150#ifndef MY_swap_std_reloc_in
116c20d2 151#define MY_swap_std_reloc_in NAME (aout, swap_std_reloc_in)
252b5132
RH		 152#endif
153
1642229e 154#ifndef MY_swap_ext_reloc_in
116c20d2 155#define MY_swap_ext_reloc_in NAME (aout, swap_ext_reloc_in)
1642229e
HPN		 156#endif
157
252b5132 158#ifndef MY_swap_std_reloc_out
116c20d2 159#define MY_swap_std_reloc_out NAME (aout, swap_std_reloc_out)
252b5132
RH		 160#endif
161
1642229e 162#ifndef MY_swap_ext_reloc_out
116c20d2 163#define MY_swap_ext_reloc_out NAME (aout, swap_ext_reloc_out)
1642229e
HPN		 164#endif
165
252b5132
RH		 166#ifndef MY_final_link_relocate
167#define MY_final_link_relocate _bfd_final_link_relocate
168#endif
169
170#ifndef MY_relocate_contents
171#define MY_relocate_contents _bfd_relocate_contents
172#endif
173
116c20d2
NC		 174#define howto_table_ext NAME (aout, ext_howto_table)
175#define howto_table_std NAME (aout, std_howto_table)
252b5132
RH		 176
177reloc_howto_type howto_table_ext[] =
178{
07d6d2b8
AM		 179 /* Type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone. */
180 HOWTO (RELOC_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, 0, "8", FALSE, 0, 0x000000ff, FALSE),
181 HOWTO (RELOC_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, 0, "16", FALSE, 0, 0x0000ffff, FALSE),
182 HOWTO (RELOC_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, 0, "32", FALSE, 0, 0xffffffff, FALSE),
183 HOWTO (RELOC_DISP8, 0, 0, 8, TRUE, 0, complain_overflow_signed, 0, "DISP8", FALSE, 0, 0x000000ff, FALSE),
184 HOWTO (RELOC_DISP16, 0, 1, 16, TRUE, 0, complain_overflow_signed, 0, "DISP16", FALSE, 0, 0x0000ffff, FALSE),
185 HOWTO (RELOC_DISP32, 0, 2, 32, TRUE, 0, complain_overflow_signed, 0, "DISP32", FALSE, 0, 0xffffffff, FALSE),
186 HOWTO (RELOC_WDISP30, 2, 2, 30, TRUE, 0, complain_overflow_signed, 0, "WDISP30", FALSE, 0, 0x3fffffff, FALSE),
187 HOWTO (RELOC_WDISP22, 2, 2, 22, TRUE, 0, complain_overflow_signed, 0, "WDISP22", FALSE, 0, 0x003fffff, FALSE),
188 HOWTO (RELOC_HI22, 10, 2, 22, FALSE, 0, complain_overflow_bitfield, 0, "HI22", FALSE, 0, 0x003fffff, FALSE),
189 HOWTO (RELOC_22, 0, 2, 22, FALSE, 0, complain_overflow_bitfield, 0, "22", FALSE, 0, 0x003fffff, FALSE),
190 HOWTO (RELOC_13, 0, 2, 13, FALSE, 0, complain_overflow_bitfield, 0, "13", FALSE, 0, 0x00001fff, FALSE),
191 HOWTO (RELOC_LO10, 0, 2, 10, FALSE, 0, complain_overflow_dont, 0, "LO10", FALSE, 0, 0x000003ff, FALSE),
192 HOWTO (RELOC_SFA_BASE,0, 2, 32, FALSE, 0, complain_overflow_bitfield, 0, "SFA_BASE", FALSE, 0, 0xffffffff, FALSE),
193 HOWTO (RELOC_SFA_OFF13,0, 2, 32, FALSE, 0, complain_overflow_bitfield, 0, "SFA_OFF13", FALSE, 0, 0xffffffff, FALSE),
194 HOWTO (RELOC_BASE10, 0, 2, 10, FALSE, 0, complain_overflow_dont, 0, "BASE10", FALSE, 0, 0x000003ff, FALSE),
195 HOWTO (RELOC_BASE13, 0, 2, 13, FALSE, 0, complain_overflow_signed, 0, "BASE13", FALSE, 0, 0x00001fff, FALSE),
196 HOWTO (RELOC_BASE22, 10, 2, 22, FALSE, 0, complain_overflow_bitfield, 0, "BASE22", FALSE, 0, 0x003fffff, FALSE),
197 HOWTO (RELOC_PC10, 0, 2, 10, TRUE, 0, complain_overflow_dont, 0, "PC10", FALSE, 0, 0x000003ff, TRUE),
198 HOWTO (RELOC_PC22, 10, 2, 22, TRUE, 0, complain_overflow_signed, 0, "PC22", FALSE, 0, 0x003fffff, TRUE),
199 HOWTO (RELOC_JMP_TBL, 2, 2, 30, TRUE, 0, complain_overflow_signed, 0, "JMP_TBL", FALSE, 0, 0x3fffffff, FALSE),
116c20d2
NC		 200 HOWTO (RELOC_SEGOFF16,0, 2, 0, FALSE, 0, complain_overflow_bitfield, 0, "SEGOFF16", FALSE, 0, 0x00000000, FALSE),
201 HOWTO (RELOC_GLOB_DAT,0, 2, 0, FALSE, 0, complain_overflow_bitfield, 0, "GLOB_DAT", FALSE, 0, 0x00000000, FALSE),
202 HOWTO (RELOC_JMP_SLOT,0, 2, 0, FALSE, 0, complain_overflow_bitfield, 0, "JMP_SLOT", FALSE, 0, 0x00000000, FALSE),
203 HOWTO (RELOC_RELATIVE,0, 2, 0, FALSE, 0, complain_overflow_bitfield, 0, "RELATIVE", FALSE, 0, 0x00000000, FALSE),
07d6d2b8
AM		 204 HOWTO (0, 0, 3, 0, FALSE, 0, complain_overflow_dont, 0, "R_SPARC_NONE",FALSE, 0, 0x00000000, TRUE),
205 HOWTO (0, 0, 3, 0, FALSE, 0, complain_overflow_dont, 0, "R_SPARC_NONE",FALSE, 0, 0x00000000, TRUE),
252b5132 206#define RELOC_SPARC_REV32 RELOC_WDISP19
07d6d2b8 207 HOWTO (RELOC_SPARC_REV32, 0, 2, 32, FALSE, 0, complain_overflow_dont, 0,"R_SPARC_REV32",FALSE, 0, 0xffffffff, FALSE),
252b5132
RH		 208};
209
210/* Convert standard reloc records to "arelent" format (incl byte swap). */
211
5ed6aba4
NC		 212reloc_howto_type howto_table_std[] =
213{
07d6d2b8
AM		 214 /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone. */
215HOWTO ( 0, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,0,"8", TRUE, 0x000000ff,0x000000ff, FALSE),
216HOWTO ( 1, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,0,"16", TRUE, 0x0000ffff,0x0000ffff, FALSE),
217HOWTO ( 2, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,0,"32", TRUE, 0xffffffff,0xffffffff, FALSE),
218HOWTO ( 3, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,0,"64", TRUE, 0xdeaddead,0xdeaddead, FALSE),
219HOWTO ( 4, 0, 0, 8, TRUE, 0, complain_overflow_signed, 0,"DISP8", TRUE, 0x000000ff,0x000000ff, FALSE),
220HOWTO ( 5, 0, 1, 16, TRUE, 0, complain_overflow_signed, 0,"DISP16", TRUE, 0x0000ffff,0x0000ffff, FALSE),
221HOWTO ( 6, 0, 2, 32, TRUE, 0, complain_overflow_signed, 0,"DISP32", TRUE, 0xffffffff,0xffffffff, FALSE),
222HOWTO ( 7, 0, 4, 64, TRUE, 0, complain_overflow_signed, 0,"DISP64", TRUE, 0xfeedface,0xfeedface, FALSE),
223HOWTO ( 8, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"GOT_REL", FALSE, 0,0x00000000, FALSE),
224HOWTO ( 9, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,0,"BASE16", FALSE,0xffffffff,0xffffffff, FALSE),
225HOWTO (10, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,0,"BASE32", FALSE,0xffffffff,0xffffffff, FALSE),
5f771d47
ILT		 226EMPTY_HOWTO (-1),
227EMPTY_HOWTO (-1),
228EMPTY_HOWTO (-1),
229EMPTY_HOWTO (-1),
230EMPTY_HOWTO (-1),
07d6d2b8 231 HOWTO (16, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"JMP_TABLE", FALSE, 0,0x00000000, FALSE),
5f771d47
ILT		 232EMPTY_HOWTO (-1),
233EMPTY_HOWTO (-1),
234EMPTY_HOWTO (-1),
235EMPTY_HOWTO (-1),
236EMPTY_HOWTO (-1),
237EMPTY_HOWTO (-1),
238EMPTY_HOWTO (-1),
239EMPTY_HOWTO (-1),
240EMPTY_HOWTO (-1),
241EMPTY_HOWTO (-1),
242EMPTY_HOWTO (-1),
243EMPTY_HOWTO (-1),
244EMPTY_HOWTO (-1),
245EMPTY_HOWTO (-1),
246EMPTY_HOWTO (-1),
07d6d2b8 247 HOWTO (32, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"RELATIVE", FALSE, 0,0x00000000, FALSE),
5f771d47
ILT		 248EMPTY_HOWTO (-1),
249EMPTY_HOWTO (-1),
250EMPTY_HOWTO (-1),
251EMPTY_HOWTO (-1),
252EMPTY_HOWTO (-1),
253EMPTY_HOWTO (-1),
254EMPTY_HOWTO (-1),
07d6d2b8 255 HOWTO (40, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"BASEREL", FALSE, 0,0x00000000, FALSE),
252b5132
RH		 256};
257
923f08ff 258#define TABLE_SIZE(TABLE) (sizeof (TABLE) / sizeof (TABLE[0]))
252b5132
RH		 259
260reloc_howto_type *
116c20d2 261NAME (aout, reloc_type_lookup) (bfd *abfd, bfd_reloc_code_real_type code)
252b5132 262{
116c20d2
NC		 263#define EXT(i, j) case i: return & howto_table_ext [j]
264#define STD(i, j) case i: return & howto_table_std [j]
252b5132 265 int ext = obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE;
f7c33884 266
252b5132 267 if (code == BFD_RELOC_CTOR)
30d10e9e 268 switch (bfd_arch_bits_per_address (abfd))
252b5132
RH		 269 {
270 case 32:
271 code = BFD_RELOC_32;
272 break;
273 case 64:
274 code = BFD_RELOC_64;
275 break;
276 }
f7c33884 277
252b5132
RH		 278 if (ext)
279 switch (code)
280 {
1642229e
HPN		 281 EXT (BFD_RELOC_8, 0);
282 EXT (BFD_RELOC_16, 1);
252b5132
RH		 283 EXT (BFD_RELOC_32, 2);
284 EXT (BFD_RELOC_HI22, 8);
285 EXT (BFD_RELOC_LO10, 11);
286 EXT (BFD_RELOC_32_PCREL_S2, 6);
287 EXT (BFD_RELOC_SPARC_WDISP22, 7);
288 EXT (BFD_RELOC_SPARC13, 10);
289 EXT (BFD_RELOC_SPARC_GOT10, 14);
290 EXT (BFD_RELOC_SPARC_BASE13, 15);
291 EXT (BFD_RELOC_SPARC_GOT13, 15);
292 EXT (BFD_RELOC_SPARC_GOT22, 16);
293 EXT (BFD_RELOC_SPARC_PC10, 17);
294 EXT (BFD_RELOC_SPARC_PC22, 18);
295 EXT (BFD_RELOC_SPARC_WPLT30, 19);
296 EXT (BFD_RELOC_SPARC_REV32, 26);
116c20d2
NC		 297 default:
298 return NULL;
252b5132
RH		 299 }
300 else
f7c33884 301 /* std relocs. */
252b5132
RH		 302 switch (code)
303 {
2846975a 304 STD (BFD_RELOC_8, 0);
252b5132
RH		 305 STD (BFD_RELOC_16, 1);
306 STD (BFD_RELOC_32, 2);
307 STD (BFD_RELOC_8_PCREL, 4);
308 STD (BFD_RELOC_16_PCREL, 5);
309 STD (BFD_RELOC_32_PCREL, 6);
310 STD (BFD_RELOC_16_BASEREL, 9);
311 STD (BFD_RELOC_32_BASEREL, 10);
116c20d2
NC		 312 default:
313 return NULL;
252b5132
RH		 314 }
315}
316
157090f7
AM		 317reloc_howto_type *
318NAME (aout, reloc_name_lookup) (bfd *abfd, const char *r_name)
319{
320 unsigned int i, size;
321 reloc_howto_type *howto_table;
322
323 if (obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE)
324 {
325 howto_table = howto_table_ext;
326 size = sizeof (howto_table_ext) / sizeof (howto_table_ext[0]);
327 }
328 else
329 {
330 howto_table = howto_table_std;
331 size = sizeof (howto_table_std) / sizeof (howto_table_std[0]);
332 }
333
334 for (i = 0; i < size; i++)
335 if (howto_table[i].name != NULL
336 && strcasecmp (howto_table[i].name, r_name) == 0)
337 return &howto_table[i];
338
339 return NULL;
340}
341
252b5132
RH		 342/*
343SUBSECTION
344 Internal entry points
345
346DESCRIPTION
347 @file{aoutx.h} exports several routines for accessing the
348 contents of an a.out file, which are gathered and exported in
349 turn by various format specific files (eg sunos.c).
252b5132
RH		 350*/
351
352/*
353FUNCTION
354 aout_@var{size}_swap_exec_header_in
355
356SYNOPSIS
357 void aout_@var{size}_swap_exec_header_in,
07d6d2b8
AM		 358 (bfd *abfd,
359 struct external_exec *bytes,
360 struct internal_exec *execp);
252b5132
RH		 361
362DESCRIPTION
363 Swap the information in an executable header @var{raw_bytes} taken
364 from a raw byte stream memory image into the internal exec header
365 structure @var{execp}.
366*/
367
368#ifndef NAME_swap_exec_header_in
369void
116c20d2
NC		 370NAME (aout, swap_exec_header_in) (bfd *abfd,
371 struct external_exec *bytes,
372 struct internal_exec *execp)
252b5132 373{
252b5132
RH		 374 /* The internal_exec structure has some fields that are unused in this
375 configuration (IE for i960), so ensure that all such uninitialized
376 fields are zero'd out. There are places where two of these structs
0ef5a5bd 377 are memcmp'd, and thus the contents do matter. */
116c20d2 378 memset ((void *) execp, 0, sizeof (struct internal_exec));
252b5132 379 /* Now fill in fields in the execp, from the bytes in the raw data. */
dc810e39 380 execp->a_info = H_GET_32 (abfd, bytes->e_info);
252b5132
RH		 381 execp->a_text = GET_WORD (abfd, bytes->e_text);
382 execp->a_data = GET_WORD (abfd, bytes->e_data);
383 execp->a_bss = GET_WORD (abfd, bytes->e_bss);
384 execp->a_syms = GET_WORD (abfd, bytes->e_syms);
385 execp->a_entry = GET_WORD (abfd, bytes->e_entry);
386 execp->a_trsize = GET_WORD (abfd, bytes->e_trsize);
387 execp->a_drsize = GET_WORD (abfd, bytes->e_drsize);
388}
116c20d2 389#define NAME_swap_exec_header_in NAME (aout, swap_exec_header_in)
252b5132
RH		 390#endif
391
392/*
393FUNCTION
394 aout_@var{size}_swap_exec_header_out
395
396SYNOPSIS
397 void aout_@var{size}_swap_exec_header_out
398 (bfd *abfd,
399 struct internal_exec *execp,
400 struct external_exec *raw_bytes);
401
402DESCRIPTION
403 Swap the information in an internal exec header structure
404 @var{execp} into the buffer @var{raw_bytes} ready for writing to disk.
405*/
406void
116c20d2
NC		 407NAME (aout, swap_exec_header_out) (bfd *abfd,
408 struct internal_exec *execp,
409 struct external_exec *bytes)
252b5132 410{
0ef5a5bd 411 /* Now fill in fields in the raw data, from the fields in the exec struct. */
dc810e39 412 H_PUT_32 (abfd, execp->a_info , bytes->e_info);
252b5132
RH		 413 PUT_WORD (abfd, execp->a_text , bytes->e_text);
414 PUT_WORD (abfd, execp->a_data , bytes->e_data);
415 PUT_WORD (abfd, execp->a_bss , bytes->e_bss);
416 PUT_WORD (abfd, execp->a_syms , bytes->e_syms);
417 PUT_WORD (abfd, execp->a_entry , bytes->e_entry);
418 PUT_WORD (abfd, execp->a_trsize, bytes->e_trsize);
419 PUT_WORD (abfd, execp->a_drsize, bytes->e_drsize);
420}
421
422/* Make all the section for an a.out file. */
423
b34976b6 424bfd_boolean
116c20d2 425NAME (aout, make_sections) (bfd *abfd)
252b5132 426{
116c20d2 427 if (obj_textsec (abfd) == NULL && bfd_make_section (abfd, ".text") == NULL)
b34976b6 428 return FALSE;
116c20d2 429 if (obj_datasec (abfd) == NULL && bfd_make_section (abfd, ".data") == NULL)
b34976b6 430 return FALSE;
116c20d2 431 if (obj_bsssec (abfd) == NULL && bfd_make_section (abfd, ".bss") == NULL)
b34976b6
AM		 432 return FALSE;
433 return TRUE;
252b5132
RH		 434}
435
436/*
437FUNCTION
438 aout_@var{size}_some_aout_object_p
439
440SYNOPSIS
441 const bfd_target *aout_@var{size}_some_aout_object_p
442 (bfd *abfd,
07d6d2b8 443 struct internal_exec *execp,
116c20d2 444 const bfd_target *(*callback_to_real_object_p) (bfd *));
252b5132
RH		 445
446DESCRIPTION
447 Some a.out variant thinks that the file open in @var{abfd}
448 checking is an a.out file. Do some more checking, and set up
449 for access if it really is. Call back to the calling
450 environment's "finish up" function just before returning, to
451 handle any last-minute setup.
452*/
453
454const bfd_target *
116c20d2
NC		 455NAME (aout, some_aout_object_p) (bfd *abfd,
456 struct internal_exec *execp,
457 const bfd_target *(*callback_to_real_object_p) (bfd *))
252b5132
RH		 458{
459 struct aout_data_struct *rawptr, *oldrawptr;
460 const bfd_target *result;
116c20d2 461 bfd_size_type amt = sizeof (* rawptr);
252b5132 462
a50b1753 463 rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, amt);
252b5132 464 if (rawptr == NULL)
116c20d2 465 return NULL;
252b5132
RH		 466
467 oldrawptr = abfd->tdata.aout_data;
468 abfd->tdata.aout_data = rawptr;
469
dc12032b 470 /* Copy the contents of the old tdata struct. */
252b5132
RH		 471 if (oldrawptr != NULL)
472 *abfd->tdata.aout_data = *oldrawptr;
473
474 abfd->tdata.aout_data->a.hdr = &rawptr->e;
f7c33884
NC		 475 /* Copy in the internal_exec struct. */
476 *(abfd->tdata.aout_data->a.hdr) = *execp;
252b5132
RH		 477 execp = abfd->tdata.aout_data->a.hdr;
478
f7c33884 479 /* Set the file flags. */
252b5132
RH		 480 abfd->flags = BFD_NO_FLAGS;
481 if (execp->a_drsize || execp->a_trsize)
482 abfd->flags |= HAS_RELOC;
f7c33884 483 /* Setting of EXEC_P has been deferred to the bottom of this function. */
252b5132
RH		 484 if (execp->a_syms)
485 abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS;
bbb1afc8 486 if (N_DYNAMIC (execp))
252b5132
RH		 487 abfd->flags |= DYNAMIC;
488
bbb1afc8 489 if (N_MAGIC (execp) == ZMAGIC)
252b5132
RH		 490 {
491 abfd->flags |= D_PAGED | WP_TEXT;
492 adata (abfd).magic = z_magic;
493 }
bbb1afc8 494 else if (N_MAGIC (execp) == QMAGIC)
252b5132
RH		 495 {
496 abfd->flags |= D_PAGED | WP_TEXT;
497 adata (abfd).magic = z_magic;
498 adata (abfd).subformat = q_magic_format;
499 }
bbb1afc8 500 else if (N_MAGIC (execp) == NMAGIC)
252b5132
RH		 501 {
502 abfd->flags |= WP_TEXT;
503 adata (abfd).magic = n_magic;
504 }
bbb1afc8
AM		 505 else if (N_MAGIC (execp) == OMAGIC
506 || N_MAGIC (execp) == BMAGIC)
252b5132
RH		 507 adata (abfd).magic = o_magic;
508 else
116c20d2
NC		 509 /* Should have been checked with N_BADMAG before this routine
510 was called. */
511 abort ();
252b5132
RH		 512
513 bfd_get_start_address (abfd) = execp->a_entry;
514
116c20d2 515 obj_aout_symbols (abfd) = NULL;
252b5132
RH		 516 bfd_get_symcount (abfd) = execp->a_syms / sizeof (struct external_nlist);
517
518 /* The default relocation entry size is that of traditional V7 Unix. */
519 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
520
0ef5a5bd 521 /* The default symbol entry size is that of traditional Unix. */
252b5132
RH		 522 obj_symbol_entry_size (abfd) = EXTERNAL_NLIST_SIZE;
523
524#ifdef USE_MMAP
525 bfd_init_window (&obj_aout_sym_window (abfd));
526 bfd_init_window (&obj_aout_string_window (abfd));
527#endif
528 obj_aout_external_syms (abfd) = NULL;
529 obj_aout_external_strings (abfd) = NULL;
530 obj_aout_sym_hashes (abfd) = NULL;
531
116c20d2 532 if (! NAME (aout, make_sections) (abfd))
487e54f2 533 goto error_ret;
252b5132 534
eea6121a
AM		 535 obj_datasec (abfd)->size = execp->a_data;
536 obj_bsssec (abfd)->size = execp->a_bss;
252b5132
RH		 537
538 obj_textsec (abfd)->flags =
539 (execp->a_trsize != 0
540 ? (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_RELOC)
541 : (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS));
542 obj_datasec (abfd)->flags =
543 (execp->a_drsize != 0
544 ? (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS | SEC_RELOC)
545 : (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS));
546 obj_bsssec (abfd)->flags = SEC_ALLOC;
547
548#ifdef THIS_IS_ONLY_DOCUMENTATION
549 /* The common code can't fill in these things because they depend
550 on either the start address of the text segment, the rounding
551 up of virtual addresses between segments, or the starting file
552 position of the text segment -- all of which varies among different
553 versions of a.out. */
554
555 /* Call back to the format-dependent code to fill in the rest of the
556 fields and do any further cleanup. Things that should be filled
557 in by the callback: */
558
559 struct exec *execp = exec_hdr (abfd);
560
bbb1afc8 561 obj_textsec (abfd)->size = N_TXTSIZE (execp);
f7c33884 562 /* Data and bss are already filled in since they're so standard. */
252b5132 563
f7c33884 564 /* The virtual memory addresses of the sections. */
bbb1afc8
AM		 565 obj_textsec (abfd)->vma = N_TXTADDR (execp);
566 obj_datasec (abfd)->vma = N_DATADDR (execp);
567 obj_bsssec (abfd)->vma = N_BSSADDR (execp);
252b5132 568
f7c33884 569 /* The file offsets of the sections. */
bbb1afc8
AM		 570 obj_textsec (abfd)->filepos = N_TXTOFF (execp);
571 obj_datasec (abfd)->filepos = N_DATOFF (execp);
252b5132 572
f7c33884 573 /* The file offsets of the relocation info. */
bbb1afc8
AM		 574 obj_textsec (abfd)->rel_filepos = N_TRELOFF (execp);
575 obj_datasec (abfd)->rel_filepos = N_DRELOFF (execp);
252b5132
RH		 576
577 /* The file offsets of the string table and symbol table. */
bbb1afc8
AM		 578 obj_str_filepos (abfd) = N_STROFF (execp);
579 obj_sym_filepos (abfd) = N_SYMOFF (execp);
252b5132
RH		 580
581 /* Determine the architecture and machine type of the object file. */
bbb1afc8 582 switch (N_MACHTYPE (exec_hdr (abfd)))
923f08ff
AM		 583 {
584 default:
585 abfd->obj_arch = bfd_arch_obscure;
586 break;
587 }
252b5132 588
923f08ff
AM		 589 adata (abfd)->page_size = TARGET_PAGE_SIZE;
590 adata (abfd)->segment_size = SEGMENT_SIZE;
591 adata (abfd)->exec_bytes_size = EXEC_BYTES_SIZE;
252b5132
RH		 592
593 return abfd->xvec;
594
595 /* The architecture is encoded in various ways in various a.out variants,
596 or is not encoded at all in some of them. The relocation size depends
597 on the architecture and the a.out variant. Finally, the return value
598 is the bfd_target vector in use. If an error occurs, return zero and
599 set bfd_error to the appropriate error code.
600
601 Formats such as b.out, which have additional fields in the a.out
602 header, should cope with them in this callback as well. */
603#endif /* DOCUMENTATION */
604
beb0d161 605 result = (*callback_to_real_object_p) (abfd);
252b5132
RH		 606
607 /* Now that the segment addresses have been worked out, take a better
608 guess at whether the file is executable. If the entry point
609 is within the text segment, assume it is. (This makes files
610 executable even if their entry point address is 0, as long as
611 their text starts at zero.).
612
613 This test had to be changed to deal with systems where the text segment
614 runs at a different location than the default. The problem is that the
615 entry address can appear to be outside the text segment, thus causing an
616 erroneous conclusion that the file isn't executable.
617
618 To fix this, we now accept any non-zero entry point as an indication of
619 executability. This will work most of the time, since only the linker
0ef5a5bd 620 sets the entry point, and that is likely to be non-zero for most systems. */
252b5132
RH		 621
622 if (execp->a_entry != 0
923f08ff
AM		 623 || (execp->a_entry >= obj_textsec (abfd)->vma
624 && execp->a_entry < (obj_textsec (abfd)->vma
4c1534c7
AM		 625 + obj_textsec (abfd)->size)
626 && execp->a_trsize == 0
627 && execp->a_drsize == 0))
252b5132
RH		 628 abfd->flags |= EXEC_P;
629#ifdef STAT_FOR_EXEC
630 else
631 {
632 struct stat stat_buf;
633
634 /* The original heuristic doesn't work in some important cases.
07d6d2b8
AM		 635 The a.out file has no information about the text start
636 address. For files (like kernels) linked to non-standard
637 addresses (ld -Ttext nnn) the entry point may not be between
638 the default text start (obj_textsec(abfd)->vma) and
639 (obj_textsec(abfd)->vma) + text size. This is not just a mach
640 issue. Many kernels are loaded at non standard addresses. */
252b5132
RH		 641 if (abfd->iostream != NULL
642 && (abfd->flags & BFD_IN_MEMORY) == 0
923f08ff 643 && (fstat (fileno ((FILE *) (abfd->iostream)), &stat_buf) == 0)
252b5132
RH		 644 && ((stat_buf.st_mode & 0111) != 0))
645 abfd->flags |= EXEC_P;
646 }
647#endif /* STAT_FOR_EXEC */
648
649 if (result)
0e71e495 650 return result;
487e54f2
AM		 651
652 error_ret:
653 bfd_release (abfd, rawptr);
654 abfd->tdata.aout_data = oldrawptr;
655 return NULL;
252b5132
RH		 656}
657
658/*
659FUNCTION
660 aout_@var{size}_mkobject
661
662SYNOPSIS
b34976b6 663 bfd_boolean aout_@var{size}_mkobject, (bfd *abfd);
252b5132
RH		 664
665DESCRIPTION
666 Initialize BFD @var{abfd} for use with a.out files.
667*/
668
b34976b6 669bfd_boolean
116c20d2 670NAME (aout, mkobject) (bfd *abfd)
252b5132 671{
dc810e39 672 struct aout_data_struct *rawptr;
116c20d2 673 bfd_size_type amt = sizeof (* rawptr);
252b5132
RH		 674
675 bfd_set_error (bfd_error_system_call);
676
a50b1753 677 rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, amt);
252b5132 678 if (rawptr == NULL)
b34976b6 679 return FALSE;
252b5132
RH		 680
681 abfd->tdata.aout_data = rawptr;
682 exec_hdr (abfd) = &(rawptr->e);
683
116c20d2
NC		 684 obj_textsec (abfd) = NULL;
685 obj_datasec (abfd) = NULL;
686 obj_bsssec (abfd) = NULL;
252b5132 687
b34976b6 688 return TRUE;
252b5132
RH		 689}
690
252b5132
RH		 691/*
692FUNCTION
693 aout_@var{size}_machine_type
694
695SYNOPSIS
696 enum machine_type aout_@var{size}_machine_type
697 (enum bfd_architecture arch,
116c20d2 698 unsigned long machine,
07d6d2b8 699 bfd_boolean *unknown);
252b5132
RH		 700
701DESCRIPTION
702 Keep track of machine architecture and machine type for
703 a.out's. Return the <<machine_type>> for a particular
704 architecture and machine, or <<M_UNKNOWN>> if that exact architecture
705 and machine can't be represented in a.out format.
706
707 If the architecture is understood, machine type 0 (default)
708 is always understood.
709*/
710
711enum machine_type
116c20d2
NC		 712NAME (aout, machine_type) (enum bfd_architecture arch,
713 unsigned long machine,
714 bfd_boolean *unknown)
252b5132
RH		 715{
716 enum machine_type arch_flags;
717
718 arch_flags = M_UNKNOWN;
b34976b6 719 *unknown = TRUE;
252b5132 720
923f08ff
AM		 721 switch (arch)
722 {
723 case bfd_arch_sparc:
724 if (machine == 0
725 || machine == bfd_mach_sparc
726 || machine == bfd_mach_sparc_sparclite
727 || machine == bfd_mach_sparc_sparclite_le
74d26813
L		 728 || machine == bfd_mach_sparc_v8plus
729 || machine == bfd_mach_sparc_v8plusa
730 || machine == bfd_mach_sparc_v8plusb
07d6d2b8
AM		 731 || machine == bfd_mach_sparc_v8plusc
732 || machine == bfd_mach_sparc_v8plusd
733 || machine == bfd_mach_sparc_v8pluse
734 || machine == bfd_mach_sparc_v8plusv
735 || machine == bfd_mach_sparc_v8plusm
736 || machine == bfd_mach_sparc_v8plusm8
74d26813
L		 737 || machine == bfd_mach_sparc_v9
738 || machine == bfd_mach_sparc_v9a
4f26fb3a 739 || machine == bfd_mach_sparc_v9b
07d6d2b8
AM		 740 || machine == bfd_mach_sparc_v9c
741 || machine == bfd_mach_sparc_v9d
742 || machine == bfd_mach_sparc_v9e
743 || machine == bfd_mach_sparc_v9v
64517994 744 || machine == bfd_mach_sparc_v9m
07d6d2b8 745 || machine == bfd_mach_sparc_v9m8)
923f08ff
AM		 746 arch_flags = M_SPARC;
747 else if (machine == bfd_mach_sparc_sparclet)
748 arch_flags = M_SPARCLET;
749 break;
750
923f08ff 751 case bfd_arch_i386:
3b77b1d5
AM		 752 if (machine == 0
753 || machine == bfd_mach_i386_i386
754 || machine == bfd_mach_i386_i386_intel_syntax)
923f08ff 755 arch_flags = M_386;
252b5132 756 break;
923f08ff 757
923f08ff
AM		 758 case bfd_arch_arm:
759 if (machine == 0)
760 arch_flags = M_ARM;
252b5132 761 break;
252b5132 762
923f08ff
AM		 763 case bfd_arch_mips:
764 switch (machine)
765 {
766 case 0:
767 case bfd_mach_mips3000:
768 case bfd_mach_mips3900:
769 arch_flags = M_MIPS1;
770 break;
771 case bfd_mach_mips6000:
772 arch_flags = M_MIPS2;
773 break;
774 case bfd_mach_mips4000:
775 case bfd_mach_mips4010:
776 case bfd_mach_mips4100:
777 case bfd_mach_mips4300:
778 case bfd_mach_mips4400:
779 case bfd_mach_mips4600:
780 case bfd_mach_mips4650:
781 case bfd_mach_mips8000:
0d2e43ed 782 case bfd_mach_mips9000:
923f08ff
AM		 783 case bfd_mach_mips10000:
784 case bfd_mach_mips12000:
3aa3176b
TS		 785 case bfd_mach_mips14000:
786 case bfd_mach_mips16000:
923f08ff
AM		 787 case bfd_mach_mips16:
788 case bfd_mach_mipsisa32:
af7ee8bf 789 case bfd_mach_mipsisa32r2:
ae52f483
AB		 790 case bfd_mach_mipsisa32r3:
791 case bfd_mach_mipsisa32r5:
7361da2c 792 case bfd_mach_mipsisa32r6:
923f08ff
AM		 793 case bfd_mach_mips5:
794 case bfd_mach_mipsisa64:
5f74bc13 795 case bfd_mach_mipsisa64r2:
ae52f483
AB		 796 case bfd_mach_mipsisa64r3:
797 case bfd_mach_mipsisa64r5:
7361da2c 798 case bfd_mach_mipsisa64r6:
923f08ff 799 case bfd_mach_mips_sb1:
52b6b6b9 800 case bfd_mach_mips_xlr:
923f08ff
AM		 801 /* FIXME: These should be MIPS3, MIPS4, MIPS16, MIPS32, etc. */
802 arch_flags = M_MIPS2;
803 break;
804 default:
805 arch_flags = M_UNKNOWN;
806 break;
807 }
808 break;
809
810 case bfd_arch_ns32k:
811 switch (machine)
812 {
07d6d2b8 813 case 0: arch_flags = M_NS32532; break;
923f08ff
AM		 814 case 32032: arch_flags = M_NS32032; break;
815 case 32532: arch_flags = M_NS32532; break;
816 default: arch_flags = M_UNKNOWN; break;
817 }
818 break;
252b5132 819
923f08ff 820 case bfd_arch_vax:
b34976b6 821 *unknown = FALSE;
923f08ff 822 break;
06c15ad7 823
923f08ff
AM		 824 case bfd_arch_cris:
825 if (machine == 0 || machine == 255)
826 arch_flags = M_CRIS;
827 break;
828
829 default:
830 arch_flags = M_UNKNOWN;
831 }
252b5132
RH		 832
833 if (arch_flags != M_UNKNOWN)
b34976b6 834 *unknown = FALSE;
252b5132
RH		 835
836 return arch_flags;
837}
838
252b5132
RH		 839/*
840FUNCTION
841 aout_@var{size}_set_arch_mach
842
843SYNOPSIS
b34976b6 844 bfd_boolean aout_@var{size}_set_arch_mach,
252b5132
RH		 845 (bfd *,
846 enum bfd_architecture arch,
116c20d2 847 unsigned long machine);
252b5132
RH		 848
849DESCRIPTION
850 Set the architecture and the machine of the BFD @var{abfd} to the
851 values @var{arch} and @var{machine}. Verify that @var{abfd}'s format
852 can support the architecture required.
853*/
854
b34976b6 855bfd_boolean
116c20d2
NC		 856NAME (aout, set_arch_mach) (bfd *abfd,
857 enum bfd_architecture arch,
858 unsigned long machine)
252b5132
RH		 859{
860 if (! bfd_default_set_arch_mach (abfd, arch, machine))
b34976b6 861 return FALSE;
252b5132
RH		 862
863 if (arch != bfd_arch_unknown)
864 {
b34976b6 865 bfd_boolean unknown;
252b5132 866
116c20d2 867 NAME (aout, machine_type) (arch, machine, &unknown);
252b5132 868 if (unknown)
b34976b6 869 return FALSE;
252b5132
RH		 870 }
871
f7c33884 872 /* Determine the size of a relocation entry. */
923f08ff
AM		 873 switch (arch)
874 {
875 case bfd_arch_sparc:
923f08ff
AM		 876 case bfd_arch_mips:
877 obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE;
878 break;
879 default:
880 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
881 break;
882 }
252b5132 883
923f08ff 884 return (*aout_backend_info (abfd)->set_sizes) (abfd);
252b5132
RH		 885}
886
887static void
116c20d2 888adjust_o_magic (bfd *abfd, struct internal_exec *execp)
252b5132
RH		 889{
890 file_ptr pos = adata (abfd).exec_bytes_size;
891 bfd_vma vma = 0;
892 int pad = 0;
893
894 /* Text. */
923f08ff
AM		 895 obj_textsec (abfd)->filepos = pos;
896 if (!obj_textsec (abfd)->user_set_vma)
897 obj_textsec (abfd)->vma = vma;
252b5132 898 else
923f08ff 899 vma = obj_textsec (abfd)->vma;
252b5132 900
eea6121a
AM		 901 pos += obj_textsec (abfd)->size;
902 vma += obj_textsec (abfd)->size;
252b5132
RH		 903
904 /* Data. */
923f08ff 905 if (!obj_datasec (abfd)->user_set_vma)
252b5132 906 {
eea6121a 907 obj_textsec (abfd)->size += pad;
252b5132
RH		 908 pos += pad;
909 vma += pad;
923f08ff 910 obj_datasec (abfd)->vma = vma;
252b5132
RH		 911 }
912 else
923f08ff
AM		 913 vma = obj_datasec (abfd)->vma;
914 obj_datasec (abfd)->filepos = pos;
eea6121a
AM		 915 pos += obj_datasec (abfd)->size;
916 vma += obj_datasec (abfd)->size;
252b5132
RH		 917
918 /* BSS. */
923f08ff 919 if (!obj_bsssec (abfd)->user_set_vma)
252b5132 920 {
eea6121a 921 obj_datasec (abfd)->size += pad;
252b5132
RH		 922 pos += pad;
923 vma += pad;
923f08ff 924 obj_bsssec (abfd)->vma = vma;
252b5132
RH		 925 }
926 else
927 {
08da05b0 928 /* The VMA of the .bss section is set by the VMA of the
07d6d2b8
AM		 929 .data section plus the size of the .data section. We may
930 need to add padding bytes to make this true. */
252b5132
RH		 931 pad = obj_bsssec (abfd)->vma - vma;
932 if (pad > 0)
933 {
eea6121a 934 obj_datasec (abfd)->size += pad;
252b5132
RH		 935 pos += pad;
936 }
937 }
923f08ff 938 obj_bsssec (abfd)->filepos = pos;
252b5132
RH		 939
940 /* Fix up the exec header. */
eea6121a
AM		 941 execp->a_text = obj_textsec (abfd)->size;
942 execp->a_data = obj_datasec (abfd)->size;
943 execp->a_bss = obj_bsssec (abfd)->size;
bbb1afc8 944 N_SET_MAGIC (execp, OMAGIC);
252b5132
RH		 945}
946
947static void
116c20d2 948adjust_z_magic (bfd *abfd, struct internal_exec *execp)
252b5132
RH		 949{
950 bfd_size_type data_pad, text_pad;
951 file_ptr text_end;
dc810e39 952 const struct aout_backend_data *abdp;
116c20d2
NC		 953 /* TRUE if text includes exec header. */
954 bfd_boolean ztih;
0ef5a5bd 955
252b5132
RH		 956 abdp = aout_backend_info (abfd);
957
958 /* Text. */
959 ztih = (abdp != NULL
960 && (abdp->text_includes_header
961 || obj_aout_subformat (abfd) == q_magic_format));
923f08ff
AM		 962 obj_textsec (abfd)->filepos = (ztih
963 ? adata (abfd).exec_bytes_size
964 : adata (abfd).zmagic_disk_block_size);
965 if (! obj_textsec (abfd)->user_set_vma)
252b5132
RH		 966 {
967 /* ?? Do we really need to check for relocs here? */
923f08ff
AM		 968 obj_textsec (abfd)->vma = ((abfd->flags & HAS_RELOC)
969 ? 0
970 : (ztih
971 ? (abdp->default_text_vma
972 + adata (abfd).exec_bytes_size)
973 : abdp->default_text_vma));
252b5132
RH		 974 text_pad = 0;
975 }
976 else
977 {
978 /* The .text section is being loaded at an unusual address. We
07d6d2b8
AM		 979 may need to pad it such that the .data section starts at a page
980 boundary. */
252b5132
RH		 981 if (ztih)
982 text_pad = ((obj_textsec (abfd)->filepos - obj_textsec (abfd)->vma)
983 & (adata (abfd).page_size - 1));
984 else
985 text_pad = ((- obj_textsec (abfd)->vma)
986 & (adata (abfd).page_size - 1));
987 }
988
989 /* Find start of data. */
990 if (ztih)
991 {
eea6121a 992 text_end = obj_textsec (abfd)->filepos + obj_textsec (abfd)->size;
252b5132
RH		 993 text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end;
994 }
995 else
996 {
997 /* Note that if page_size == zmagic_disk_block_size, then
998 filepos == page_size, and this case is the same as the ztih
999 case. */
eea6121a 1000 text_end = obj_textsec (abfd)->size;
252b5132
RH		 1001 text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end;
1002 text_end += obj_textsec (abfd)->filepos;
1003 }
eea6121a 1004 obj_textsec (abfd)->size += text_pad;
252b5132
RH		 1005 text_end += text_pad;
1006
1007 /* Data. */
923f08ff 1008 if (!obj_datasec (abfd)->user_set_vma)
252b5132
RH		 1009 {
1010 bfd_vma vma;
eea6121a 1011 vma = obj_textsec (abfd)->vma + obj_textsec (abfd)->size;
923f08ff 1012 obj_datasec (abfd)->vma = BFD_ALIGN (vma, adata (abfd).segment_size);
252b5132
RH		 1013 }
1014 if (abdp && abdp->zmagic_mapped_contiguous)
1015 {
dee0a8f4
NC		 1016 asection * text = obj_textsec (abfd);
1017 asection * data = obj_datasec (abfd);
1018
eea6121a 1019 text_pad = data->vma - (text->vma + text->size);
dee0a8f4
NC		 1020 /* Only pad the text section if the data
1021 section is going to be placed after it. */
1022 if (text_pad > 0)
eea6121a 1023 text->size += text_pad;
252b5132 1024 }
923f08ff 1025 obj_datasec (abfd)->filepos = (obj_textsec (abfd)->filepos
eea6121a 1026 + obj_textsec (abfd)->size);
0ef5a5bd 1027
252b5132 1028 /* Fix up exec header while we're at it. */
eea6121a 1029 execp->a_text = obj_textsec (abfd)->size;
252b5132 1030 if (ztih && (!abdp || (abdp && !abdp->exec_header_not_counted)))
923f08ff 1031 execp->a_text += adata (abfd).exec_bytes_size;
252b5132 1032 if (obj_aout_subformat (abfd) == q_magic_format)
bbb1afc8 1033 N_SET_MAGIC (execp, QMAGIC);
252b5132 1034 else
bbb1afc8 1035 N_SET_MAGIC (execp, ZMAGIC);
252b5132
RH		 1036
1037 /* Spec says data section should be rounded up to page boundary. */
eea6121a
AM		 1038 obj_datasec (abfd)->size
1039 = align_power (obj_datasec (abfd)->size,
923f08ff 1040 obj_bsssec (abfd)->alignment_power);
eea6121a 1041 execp->a_data = BFD_ALIGN (obj_datasec (abfd)->size,
923f08ff 1042 adata (abfd).page_size);
eea6121a 1043 data_pad = execp->a_data - obj_datasec (abfd)->size;
252b5132
RH		 1044
1045 /* BSS. */
923f08ff
AM		 1046 if (!obj_bsssec (abfd)->user_set_vma)
1047 obj_bsssec (abfd)->vma = (obj_datasec (abfd)->vma
eea6121a 1048 + obj_datasec (abfd)->size);
252b5132
RH		 1049 /* If the BSS immediately follows the data section and extra space
1050 in the page is left after the data section, fudge data
1051 in the header so that the bss section looks smaller by that
1052 amount. We'll start the bss section there, and lie to the OS.
1053 (Note that a linker script, as well as the above assignment,
1054 could have explicitly set the BSS vma to immediately follow
1055 the data section.) */
923f08ff 1056 if (align_power (obj_bsssec (abfd)->vma, obj_bsssec (abfd)->alignment_power)
eea6121a
AM		 1057 == obj_datasec (abfd)->vma + obj_datasec (abfd)->size)
1058 execp->a_bss = (data_pad > obj_bsssec (abfd)->size
1059 ? 0 : obj_bsssec (abfd)->size - data_pad);
252b5132 1060 else
eea6121a 1061 execp->a_bss = obj_bsssec (abfd)->size;
252b5132
RH		 1062}
1063
1064static void
116c20d2 1065adjust_n_magic (bfd *abfd, struct internal_exec *execp)
252b5132 1066{
923f08ff 1067 file_ptr pos = adata (abfd).exec_bytes_size;
252b5132
RH		 1068 bfd_vma vma = 0;
1069 int pad;
0ef5a5bd 1070
252b5132 1071 /* Text. */
923f08ff
AM		 1072 obj_textsec (abfd)->filepos = pos;
1073 if (!obj_textsec (abfd)->user_set_vma)
1074 obj_textsec (abfd)->vma = vma;
252b5132 1075 else
923f08ff 1076 vma = obj_textsec (abfd)->vma;
eea6121a
AM		 1077 pos += obj_textsec (abfd)->size;
1078 vma += obj_textsec (abfd)->size;
252b5132
RH		 1079
1080 /* Data. */
923f08ff
AM		 1081 obj_datasec (abfd)->filepos = pos;
1082 if (!obj_datasec (abfd)->user_set_vma)
1083 obj_datasec (abfd)->vma = BFD_ALIGN (vma, adata (abfd).segment_size);
1084 vma = obj_datasec (abfd)->vma;
0ef5a5bd 1085
252b5132 1086 /* Since BSS follows data immediately, see if it needs alignment. */
eea6121a 1087 vma += obj_datasec (abfd)->size;
923f08ff 1088 pad = align_power (vma, obj_bsssec (abfd)->alignment_power) - vma;
eea6121a
AM		 1089 obj_datasec (abfd)->size += pad;
1090 pos += obj_datasec (abfd)->size;
252b5132
RH		 1091
1092 /* BSS. */
923f08ff
AM		 1093 if (!obj_bsssec (abfd)->user_set_vma)
1094 obj_bsssec (abfd)->vma = vma;
252b5132 1095 else
923f08ff 1096 vma = obj_bsssec (abfd)->vma;
252b5132
RH		 1097
1098 /* Fix up exec header. */
eea6121a
AM		 1099 execp->a_text = obj_textsec (abfd)->size;
1100 execp->a_data = obj_datasec (abfd)->size;
1101 execp->a_bss = obj_bsssec (abfd)->size;
bbb1afc8 1102 N_SET_MAGIC (execp, NMAGIC);
252b5132
RH		 1103}
1104
b34976b6 1105bfd_boolean
3a8c4a5b 1106NAME (aout, adjust_sizes_and_vmas) (bfd *abfd)
252b5132
RH		 1107{
1108 struct internal_exec *execp = exec_hdr (abfd);
1109
116c20d2 1110 if (! NAME (aout, make_sections) (abfd))
b34976b6 1111 return FALSE;
252b5132 1112
923f08ff 1113 if (adata (abfd).magic != undecided_magic)
b34976b6 1114 return TRUE;
252b5132 1115
eea6121a
AM		 1116 obj_textsec (abfd)->size =
1117 align_power (obj_textsec (abfd)->size,
923f08ff 1118 obj_textsec (abfd)->alignment_power);
252b5132 1119
252b5132
RH		 1120 /* Rule (heuristic) for when to pad to a new page. Note that there
1121 are (at least) two ways demand-paged (ZMAGIC) files have been
1122 handled. Most Berkeley-based systems start the text segment at
1123 (TARGET_PAGE_SIZE). However, newer versions of SUNOS start the text
1124 segment right after the exec header; the latter is counted in the
1125 text segment size, and is paged in by the kernel with the rest of
0ef5a5bd 1126 the text. */
252b5132
RH		 1127
1128 /* This perhaps isn't the right way to do this, but made it simpler for me
1129 to understand enough to implement it. Better would probably be to go
1130 right from BFD flags to alignment/positioning characteristics. But the
1131 old code was sloppy enough about handling the flags, and had enough
1132 other magic, that it was a little hard for me to understand. I think
1133 I understand it better now, but I haven't time to do the cleanup this
1134 minute. */
1135
1136 if (abfd->flags & D_PAGED)
1137 /* Whether or not WP_TEXT is set -- let D_PAGED override. */
923f08ff 1138 adata (abfd).magic = z_magic;
252b5132 1139 else if (abfd->flags & WP_TEXT)
923f08ff 1140 adata (abfd).magic = n_magic;
252b5132 1141 else
923f08ff 1142 adata (abfd).magic = o_magic;
252b5132
RH		 1143
1144#ifdef BFD_AOUT_DEBUG /* requires gcc2 */
1145#if __GNUC__ >= 2
1146 fprintf (stderr, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n",
1147 ({ char *str;
923f08ff
AM		 1148 switch (adata (abfd).magic)
1149 {
1150 case n_magic: str = "NMAGIC"; break;
1151 case o_magic: str = "OMAGIC"; break;
1152 case z_magic: str = "ZMAGIC"; break;
1153 default: abort ();
1154 }
252b5132
RH		 1155 str;
1156 }),
eea6121a 1157 obj_textsec (abfd)->vma, obj_textsec (abfd)->size,
07d6d2b8 1158 obj_textsec (abfd)->alignment_power,
eea6121a 1159 obj_datasec (abfd)->vma, obj_datasec (abfd)->size,
07d6d2b8 1160 obj_datasec (abfd)->alignment_power,
eea6121a 1161 obj_bsssec (abfd)->vma, obj_bsssec (abfd)->size,
07d6d2b8 1162 obj_bsssec (abfd)->alignment_power);
252b5132
RH		 1163#endif
1164#endif
1165
923f08ff 1166 switch (adata (abfd).magic)
252b5132
RH		 1167 {
1168 case o_magic:
1169 adjust_o_magic (abfd, execp);
1170 break;
1171 case z_magic:
1172 adjust_z_magic (abfd, execp);
1173 break;
1174 case n_magic:
1175 adjust_n_magic (abfd, execp);
1176 break;
1177 default:
1178 abort ();
1179 }
1180
1181#ifdef BFD_AOUT_DEBUG
1182 fprintf (stderr, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n",
eea6121a 1183 obj_textsec (abfd)->vma, obj_textsec (abfd)->size,
07d6d2b8 1184 obj_textsec (abfd)->filepos,
eea6121a 1185 obj_datasec (abfd)->vma, obj_datasec (abfd)->size,
07d6d2b8 1186 obj_datasec (abfd)->filepos,
eea6121a 1187 obj_bsssec (abfd)->vma, obj_bsssec (abfd)->size);
252b5132
RH		 1188#endif
1189
b34976b6 1190 return TRUE;
252b5132
RH		 1191}
1192
1193/*
1194FUNCTION
1195 aout_@var{size}_new_section_hook
1196
1197SYNOPSIS
07d6d2b8 1198 bfd_boolean aout_@var{size}_new_section_hook,
252b5132 1199 (bfd *abfd,
116c20d2 1200 asection *newsect);
252b5132
RH		 1201
1202DESCRIPTION
1203 Called by the BFD in response to a @code{bfd_make_section}
1204 request.
1205*/
b34976b6 1206bfd_boolean
116c20d2 1207NAME (aout, new_section_hook) (bfd *abfd, asection *newsect)
252b5132 1208{
f7c33884 1209 /* Align to double at least. */
923f08ff 1210 newsect->alignment_power = bfd_get_arch_info (abfd)->section_align_power;
252b5132 1211
252b5132 1212 if (bfd_get_format (abfd) == bfd_object)
f7c33884
NC		 1213 {
1214 if (obj_textsec (abfd) == NULL && !strcmp (newsect->name, ".text"))
1215 {
1216 obj_textsec (abfd)= newsect;
1217 newsect->target_index = N_TEXT;
f7c33884 1218 }
f592407e 1219 else if (obj_datasec (abfd) == NULL && !strcmp (newsect->name, ".data"))
f7c33884
NC		 1220 {
1221 obj_datasec (abfd) = newsect;
1222 newsect->target_index = N_DATA;
f7c33884 1223 }
f592407e 1224 else if (obj_bsssec (abfd) == NULL && !strcmp (newsect->name, ".bss"))
f7c33884
NC		 1225 {
1226 obj_bsssec (abfd) = newsect;
1227 newsect->target_index = N_BSS;
f7c33884
NC		 1228 }
1229 }
252b5132 1230
f7c33884 1231 /* We allow more than three sections internally. */
f592407e 1232 return _bfd_generic_new_section_hook (abfd, newsect);
252b5132
RH		 1233}
1234
b34976b6 1235bfd_boolean
116c20d2
NC		 1236NAME (aout, set_section_contents) (bfd *abfd,
1237 sec_ptr section,
1238 const void * location,
1239 file_ptr offset,
1240 bfd_size_type count)
252b5132 1241{
252b5132
RH		 1242 if (! abfd->output_has_begun)
1243 {
3a8c4a5b 1244 if (! NAME (aout, adjust_sizes_and_vmas) (abfd))
b34976b6 1245 return FALSE;
252b5132
RH		 1246 }
1247
1248 if (section == obj_bsssec (abfd))
1249 {
1250 bfd_set_error (bfd_error_no_contents);
b34976b6 1251 return FALSE;
252b5132
RH		 1252 }
1253
1254 if (section != obj_textsec (abfd)
1255 && section != obj_datasec (abfd))
1256 {
e6af3a53
NC		 1257 if (aout_section_merge_with_text_p (abfd, section))
1258 section->filepos = obj_textsec (abfd)->filepos +
1259 (section->vma - obj_textsec (abfd)->vma);
1260 else
1261 {
4eca0228 1262 _bfd_error_handler
695344c0 1263 /* xgettext:c-format */
871b3ab2 1264 (_("%pB: can not represent section `%pA' in a.out object file format"),
dae82561 1265 abfd, section);
07d6d2b8
AM		 1266 bfd_set_error (bfd_error_nonrepresentable_section);
1267 return FALSE;
e6af3a53 1268 }
252b5132
RH		 1269 }
1270
1271 if (count != 0)
1272 {
1273 if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0
dc810e39 1274 || bfd_bwrite (location, count, abfd) != count)
b34976b6 1275 return FALSE;
252b5132
RH		 1276 }
1277
b34976b6 1278 return TRUE;
252b5132
RH		 1279}
1280\f
1281/* Read the external symbols from an a.out file. */
1282
b34976b6 1283static bfd_boolean
116c20d2 1284aout_get_external_symbols (bfd *abfd)
252b5132 1285{
116c20d2 1286 if (obj_aout_external_syms (abfd) == NULL)
252b5132
RH		 1287 {
1288 bfd_size_type count;
1289 struct external_nlist *syms;
7c53fd1c 1290 bfd_size_type amt = exec_hdr (abfd)->a_syms;
252b5132 1291
7c53fd1c 1292 count = amt / EXTERNAL_NLIST_SIZE;
6b8f0fd5
MS		 1293 if (count == 0)
1294 return TRUE; /* Nothing to do. */
252b5132
RH		 1295
1296#ifdef USE_MMAP
7c53fd1c 1297 if (! bfd_get_file_window (abfd, obj_sym_filepos (abfd), amt,
b34976b6
AM		 1298 &obj_aout_sym_window (abfd), TRUE))
1299 return FALSE;
252b5132
RH		 1300 syms = (struct external_nlist *) obj_aout_sym_window (abfd).data;
1301#else
1302 /* We allocate using malloc to make the values easy to free
1303 later on. If we put them on the objalloc it might not be
1304 possible to free them. */
7c53fd1c 1305 syms = (struct external_nlist *) bfd_malloc (amt);
6b8f0fd5 1306 if (syms == NULL)
b34976b6 1307 return FALSE;
252b5132 1308
7c53fd1c
AM		 1309 if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
1310 || bfd_bread (syms, amt, abfd) != amt)
1311 {
1312 free (syms);
1313 return FALSE;
1314 }
252b5132
RH		 1315#endif
1316
1317 obj_aout_external_syms (abfd) = syms;
1318 obj_aout_external_sym_count (abfd) = count;
1319 }
0ef5a5bd 1320
252b5132
RH		 1321 if (obj_aout_external_strings (abfd) == NULL
1322 && exec_hdr (abfd)->a_syms != 0)
1323 {
1324 unsigned char string_chars[BYTES_IN_WORD];
1325 bfd_size_type stringsize;
1326 char *strings;
dc810e39 1327 bfd_size_type amt = BYTES_IN_WORD;
252b5132
RH		 1328
1329 /* Get the size of the strings. */
1330 if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0
116c20d2 1331 || bfd_bread ((void *) string_chars, amt, abfd) != amt)
b34976b6 1332 return FALSE;
252b5132 1333 stringsize = GET_WORD (abfd, string_chars);
0301ce14
AM		 1334 if (stringsize == 0)
1335 stringsize = 1;
1336 else if (stringsize < BYTES_IN_WORD
1337 || (size_t) stringsize != stringsize)
1338 {
1339 bfd_set_error (bfd_error_bad_value);
1340 return FALSE;
1341 }
252b5132
RH		 1342
1343#ifdef USE_MMAP
0301ce14 1344 if (stringsize >= BYTES_IN_WORD)
252b5132 1345 {
bf82069d 1346 if (! bfd_get_file_window (abfd, obj_str_filepos (abfd), stringsize + 1,
0301ce14
AM		 1347 &obj_aout_string_window (abfd), TRUE))
1348 return FALSE;
1349 strings = (char *) obj_aout_string_window (abfd).data;
252b5132 1350 }
0301ce14 1351 else
252b5132 1352#endif
0301ce14 1353 {
bf82069d 1354 strings = (char *) bfd_malloc (stringsize + 1);
0301ce14
AM		 1355 if (strings == NULL)
1356 return FALSE;
1357
1358 if (stringsize >= BYTES_IN_WORD)
1359 {
1360 /* Keep the string count in the buffer for convenience
1361 when indexing with e_strx. */
1362 amt = stringsize - BYTES_IN_WORD;
1363 if (bfd_bread (strings + BYTES_IN_WORD, amt, abfd) != amt)
1364 {
1365 free (strings);
1366 return FALSE;
1367 }
1368 }
1369 }
252b5132
RH		 1370 /* Ensure that a zero index yields an empty string. */
1371 strings[0] = '\0';
1372
bf82069d
NC		 1373 /* Ensure that the string buffer is NUL terminated. */
1374 strings[stringsize] = 0;
252b5132
RH		 1375
1376 obj_aout_external_strings (abfd) = strings;
1377 obj_aout_external_string_size (abfd) = stringsize;
1378 }
1379
b34976b6 1380 return TRUE;
252b5132
RH		 1381}
1382
1383/* Translate an a.out symbol into a BFD symbol. The desc, other, type
1384 and symbol->value fields of CACHE_PTR will be set from the a.out
1385 nlist structure. This function is responsible for setting
1386 symbol->flags and symbol->section, and adjusting symbol->value. */
1387
b34976b6 1388static bfd_boolean
116c20d2 1389translate_from_native_sym_flags (bfd *abfd, aout_symbol_type *cache_ptr)
252b5132
RH		 1390{
1391 flagword visible;
1392
1393 if ((cache_ptr->type & N_STAB) != 0
1394 || cache_ptr->type == N_FN)
1395 {
1396 asection *sec;
1397
1398 /* This is a debugging symbol. */
252b5132
RH		 1399 cache_ptr->symbol.flags = BSF_DEBUGGING;
1400
1401 /* Work out the symbol section. */
1402 switch (cache_ptr->type & N_TYPE)
1403 {
1404 case N_TEXT:
1405 case N_FN:
1406 sec = obj_textsec (abfd);
1407 break;
1408 case N_DATA:
1409 sec = obj_datasec (abfd);
1410 break;
1411 case N_BSS:
1412 sec = obj_bsssec (abfd);
1413 break;
1414 default:
1415 case N_ABS:
1416 sec = bfd_abs_section_ptr;
1417 break;
1418 }
1419
1420 cache_ptr->symbol.section = sec;
1421 cache_ptr->symbol.value -= sec->vma;
1422
b34976b6 1423 return TRUE;
252b5132
RH		 1424 }
1425
1426 /* Get the default visibility. This does not apply to all types, so
1427 we just hold it in a local variable to use if wanted. */
1428 if ((cache_ptr->type & N_EXT) == 0)
1429 visible = BSF_LOCAL;
1430 else
1431 visible = BSF_GLOBAL;
1432
1433 switch (cache_ptr->type)
1434 {
1435 default:
1436 case N_ABS: case N_ABS | N_EXT:
1437 cache_ptr->symbol.section = bfd_abs_section_ptr;
1438 cache_ptr->symbol.flags = visible;
1439 break;
1440
1441 case N_UNDF | N_EXT:
1442 if (cache_ptr->symbol.value != 0)
1443 {
1444 /* This is a common symbol. */
1445 cache_ptr->symbol.flags = BSF_GLOBAL;
1446 cache_ptr->symbol.section = bfd_com_section_ptr;
1447 }
1448 else
1449 {
1450 cache_ptr->symbol.flags = 0;
1451 cache_ptr->symbol.section = bfd_und_section_ptr;
1452 }
1453 break;
1454
1455 case N_TEXT: case N_TEXT | N_EXT:
1456 cache_ptr->symbol.section = obj_textsec (abfd);
1457 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1458 cache_ptr->symbol.flags = visible;
1459 break;
1460
1461 /* N_SETV symbols used to represent set vectors placed in the
1462 data section. They are no longer generated. Theoretically,
1463 it was possible to extract the entries and combine them with
1464 new ones, although I don't know if that was ever actually
1465 done. Unless that feature is restored, treat them as data
1466 symbols. */
1467 case N_SETV: case N_SETV | N_EXT:
1468 case N_DATA: case N_DATA | N_EXT:
1469 cache_ptr->symbol.section = obj_datasec (abfd);
1470 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1471 cache_ptr->symbol.flags = visible;
1472 break;
1473
1474 case N_BSS: case N_BSS | N_EXT:
1475 cache_ptr->symbol.section = obj_bsssec (abfd);
1476 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1477 cache_ptr->symbol.flags = visible;
1478 break;
1479
1480 case N_SETA: case N_SETA | N_EXT:
1481 case N_SETT: case N_SETT | N_EXT:
1482 case N_SETD: case N_SETD | N_EXT:
1483 case N_SETB: case N_SETB | N_EXT:
1484 {
1485 /* This code is no longer needed. It used to be used to make
07d6d2b8
AM		 1486 the linker handle set symbols, but they are now handled in
1487 the add_symbols routine instead. */
252b5132
RH		 1488 switch (cache_ptr->type & N_TYPE)
1489 {
1490 case N_SETA:
1491 cache_ptr->symbol.section = bfd_abs_section_ptr;
1492 break;
1493 case N_SETT:
1494 cache_ptr->symbol.section = obj_textsec (abfd);
1495 break;
1496 case N_SETD:
1497 cache_ptr->symbol.section = obj_datasec (abfd);
1498 break;
1499 case N_SETB:
1500 cache_ptr->symbol.section = obj_bsssec (abfd);
1501 break;
1502 }
1503
1504 cache_ptr->symbol.flags |= BSF_CONSTRUCTOR;
1505 }
1506 break;
1507
1508 case N_WARNING:
1509 /* This symbol is the text of a warning message. The next
1510 symbol is the symbol to associate the warning with. If a
1511 reference is made to that symbol, a warning is issued. */
1512 cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_WARNING;
1513 cache_ptr->symbol.section = bfd_abs_section_ptr;
1514 break;
1515
1516 case N_INDR: case N_INDR | N_EXT:
1517 /* An indirect symbol. This consists of two symbols in a row.
1518 The first symbol is the name of the indirection. The second
1519 symbol is the name of the target. A reference to the first
1520 symbol becomes a reference to the second. */
1521 cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_INDIRECT | visible;
1522 cache_ptr->symbol.section = bfd_ind_section_ptr;
1523 break;
1524
1525 case N_WEAKU:
1526 cache_ptr->symbol.section = bfd_und_section_ptr;
1527 cache_ptr->symbol.flags = BSF_WEAK;
1528 break;
1529
1530 case N_WEAKA:
1531 cache_ptr->symbol.section = bfd_abs_section_ptr;
1532 cache_ptr->symbol.flags = BSF_WEAK;
1533 break;
1534
1535 case N_WEAKT:
1536 cache_ptr->symbol.section = obj_textsec (abfd);
1537 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1538 cache_ptr->symbol.flags = BSF_WEAK;
1539 break;
1540
1541 case N_WEAKD:
1542 cache_ptr->symbol.section = obj_datasec (abfd);
1543 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1544 cache_ptr->symbol.flags = BSF_WEAK;
1545 break;
1546
1547 case N_WEAKB:
1548 cache_ptr->symbol.section = obj_bsssec (abfd);
1549 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1550 cache_ptr->symbol.flags = BSF_WEAK;
1551 break;
1552 }
1553
b34976b6 1554 return TRUE;
252b5132
RH		 1555}
1556
1557/* Set the fields of SYM_POINTER according to CACHE_PTR. */
1558
b34976b6 1559static bfd_boolean
116c20d2
NC		 1560translate_to_native_sym_flags (bfd *abfd,
1561 asymbol *cache_ptr,
1562 struct external_nlist *sym_pointer)
252b5132
RH		 1563{
1564 bfd_vma value = cache_ptr->value;
1565 asection *sec;
1566 bfd_vma off;
1567
1568 /* Mask out any existing type bits in case copying from one section
1569 to another. */
1570 sym_pointer->e_type[0] &= ~N_TYPE;
1571
1572 sec = bfd_get_section (cache_ptr);
1573 off = 0;
1574
1575 if (sec == NULL)
1576 {
1577 /* This case occurs, e.g., for the *DEBUG* section of a COFF
1578 file. */
4eca0228 1579 _bfd_error_handler
695344c0 1580 /* xgettext:c-format */
871b3ab2 1581 (_("%pB: can not represent section for symbol `%s' in a.out "
4eca0228 1582 "object file format"),
dae82561 1583 abfd,
252b5132
RH		 1584 cache_ptr->name != NULL ? cache_ptr->name : _("*unknown*"));
1585 bfd_set_error (bfd_error_nonrepresentable_section);
b34976b6 1586 return FALSE;
252b5132
RH		 1587 }
1588
1589 if (sec->output_section != NULL)
1590 {
1591 off = sec->output_offset;
1592 sec = sec->output_section;
1593 }
1594
1595 if (bfd_is_abs_section (sec))
1596 sym_pointer->e_type[0] |= N_ABS;
1597 else if (sec == obj_textsec (abfd))
1598 sym_pointer->e_type[0] |= N_TEXT;
1599 else if (sec == obj_datasec (abfd))
1600 sym_pointer->e_type[0] |= N_DATA;
1601 else if (sec == obj_bsssec (abfd))
1602 sym_pointer->e_type[0] |= N_BSS;
1603 else if (bfd_is_und_section (sec))
1604 sym_pointer->e_type[0] = N_UNDF | N_EXT;
1605 else if (bfd_is_ind_section (sec))
1606 sym_pointer->e_type[0] = N_INDR;
1607 else if (bfd_is_com_section (sec))
1608 sym_pointer->e_type[0] = N_UNDF | N_EXT;
1609 else
1610 {
e6af3a53
NC		 1611 if (aout_section_merge_with_text_p (abfd, sec))
1612 sym_pointer->e_type[0] |= N_TEXT;
1613 else
1614 {
4eca0228 1615 _bfd_error_handler
695344c0 1616 /* xgettext:c-format */
871b3ab2 1617 (_("%pB: can not represent section `%pA' in a.out object file format"),
dae82561 1618 abfd, sec);
07d6d2b8
AM		 1619 bfd_set_error (bfd_error_nonrepresentable_section);
1620 return FALSE;
e6af3a53 1621 }
252b5132
RH		 1622 }
1623
f7c33884 1624 /* Turn the symbol from section relative to absolute again. */
252b5132
RH		 1625 value += sec->vma + off;
1626
1627 if ((cache_ptr->flags & BSF_WARNING) != 0)
1628 sym_pointer->e_type[0] = N_WARNING;
1629
1630 if ((cache_ptr->flags & BSF_DEBUGGING) != 0)
1631 sym_pointer->e_type[0] = ((aout_symbol_type *) cache_ptr)->type;
1632 else if ((cache_ptr->flags & BSF_GLOBAL) != 0)
1633 sym_pointer->e_type[0] |= N_EXT;
930d924d
L		 1634 else if ((cache_ptr->flags & BSF_LOCAL) != 0)
1635 sym_pointer->e_type[0] &= ~N_EXT;
252b5132
RH		 1636
1637 if ((cache_ptr->flags & BSF_CONSTRUCTOR) != 0)
1638 {
1639 int type = ((aout_symbol_type *) cache_ptr)->type;
f7c33884 1640
252b5132
RH		 1641 switch (type)
1642 {
1643 case N_ABS: type = N_SETA; break;
1644 case N_TEXT: type = N_SETT; break;
1645 case N_DATA: type = N_SETD; break;
1646 case N_BSS: type = N_SETB; break;
1647 }
1648 sym_pointer->e_type[0] = type;
1649 }
1650
1651 if ((cache_ptr->flags & BSF_WEAK) != 0)
1652 {
1653 int type;
1654
1655 switch (sym_pointer->e_type[0] & N_TYPE)
1656 {
1657 default:
1658 case N_ABS: type = N_WEAKA; break;
1659 case N_TEXT: type = N_WEAKT; break;
1660 case N_DATA: type = N_WEAKD; break;
1661 case N_BSS: type = N_WEAKB; break;
1662 case N_UNDF: type = N_WEAKU; break;
1663 }
1664 sym_pointer->e_type[0] = type;
1665 }
1666
923f08ff 1667 PUT_WORD (abfd, value, sym_pointer->e_value);
252b5132 1668
b34976b6 1669 return TRUE;
252b5132
RH		 1670}
1671\f
0ef5a5bd 1672/* Native-level interface to symbols. */
252b5132
RH		 1673
1674asymbol *
116c20d2 1675NAME (aout, make_empty_symbol) (bfd *abfd)
252b5132 1676{
dc810e39 1677 bfd_size_type amt = sizeof (aout_symbol_type);
116c20d2 1678
d3ce72d0
NC		 1679 aout_symbol_type *new_symbol = (aout_symbol_type *) bfd_zalloc (abfd, amt);
1680 if (!new_symbol)
252b5132 1681 return NULL;
d3ce72d0 1682 new_symbol->symbol.the_bfd = abfd;
252b5132 1683
d3ce72d0 1684 return &new_symbol->symbol;
252b5132
RH		 1685}
1686
1687/* Translate a set of internal symbols into external symbols. */
1688
b34976b6 1689bfd_boolean
116c20d2
NC		 1690NAME (aout, translate_symbol_table) (bfd *abfd,
1691 aout_symbol_type *in,
1692 struct external_nlist *ext,
1693 bfd_size_type count,
1694 char *str,
1695 bfd_size_type strsize,
1696 bfd_boolean dynamic)
252b5132
RH		 1697{
1698 struct external_nlist *ext_end;
1699
1700 ext_end = ext + count;
1701 for (; ext < ext_end; ext++, in++)
1702 {
1703 bfd_vma x;
1704
1705 x = GET_WORD (abfd, ext->e_strx);
1706 in->symbol.the_bfd = abfd;
1707
1708 /* For the normal symbols, the zero index points at the number
1709 of bytes in the string table but is to be interpreted as the
1710 null string. For the dynamic symbols, the number of bytes in
1711 the string table is stored in the __DYNAMIC structure and the
1712 zero index points at an actual string. */
1713 if (x == 0 && ! dynamic)
1714 in->symbol.name = "";
1715 else if (x < strsize)
1716 in->symbol.name = str + x;
1717 else
0d329c0a
AM		 1718 {
1719 _bfd_error_handler
1720 (_("%pB: invalid string offset %" PRIu64 " >= %" PRIu64),
1721 abfd, (uint64_t) x, (uint64_t) strsize);
1722 bfd_set_error (bfd_error_bad_value);
1723 return FALSE;
1724 }
252b5132
RH		 1725
1726 in->symbol.value = GET_SWORD (abfd, ext->e_value);
dc810e39
AM		 1727 in->desc = H_GET_16 (abfd, ext->e_desc);
1728 in->other = H_GET_8 (abfd, ext->e_other);
1729 in->type = H_GET_8 (abfd, ext->e_type);
252b5132
RH		 1730 in->symbol.udata.p = NULL;
1731
1732 if (! translate_from_native_sym_flags (abfd, in))
b34976b6 1733 return FALSE;
252b5132
RH		 1734
1735 if (dynamic)
1736 in->symbol.flags |= BSF_DYNAMIC;
1737 }
1738
b34976b6 1739 return TRUE;
252b5132
RH		 1740}
1741
1742/* We read the symbols into a buffer, which is discarded when this
1743 function exits. We read the strings into a buffer large enough to
0ef5a5bd 1744 hold them all plus all the cached symbol entries. */
252b5132 1745
b34976b6 1746bfd_boolean
116c20d2 1747NAME (aout, slurp_symbol_table) (bfd *abfd)
252b5132
RH		 1748{
1749 struct external_nlist *old_external_syms;
1750 aout_symbol_type *cached;
dc810e39 1751 bfd_size_type cached_size;
252b5132 1752
f7c33884 1753 /* If there's no work to be done, don't do any. */
116c20d2 1754 if (obj_aout_symbols (abfd) != NULL)
b34976b6 1755 return TRUE;
252b5132
RH		 1756
1757 old_external_syms = obj_aout_external_syms (abfd);
1758
1759 if (! aout_get_external_symbols (abfd))
b34976b6 1760 return FALSE;
252b5132 1761
dc810e39 1762 cached_size = obj_aout_external_sym_count (abfd);
87b32780
MS		 1763 if (cached_size == 0)
1764 return TRUE; /* Nothing to do. */
1765
dc810e39 1766 cached_size *= sizeof (aout_symbol_type);
a50b1753 1767 cached = (aout_symbol_type *) bfd_zmalloc (cached_size);
87b32780 1768 if (cached == NULL)
b34976b6 1769 return FALSE;
252b5132
RH		 1770
1771 /* Convert from external symbol information to internal. */
116c20d2 1772 if (! (NAME (aout, translate_symbol_table)
252b5132
RH		 1773 (abfd, cached,
1774 obj_aout_external_syms (abfd),
1775 obj_aout_external_sym_count (abfd),
1776 obj_aout_external_strings (abfd),
1777 obj_aout_external_string_size (abfd),
b34976b6 1778 FALSE)))
252b5132
RH		 1779 {
1780 free (cached);
b34976b6 1781 return FALSE;
252b5132
RH		 1782 }
1783
1784 bfd_get_symcount (abfd) = obj_aout_external_sym_count (abfd);
1785
1786 obj_aout_symbols (abfd) = cached;
1787
1788 /* It is very likely that anybody who calls this function will not
1789 want the external symbol information, so if it was allocated
1790 because of our call to aout_get_external_symbols, we free it up
1791 right away to save space. */
116c20d2
NC		 1792 if (old_external_syms == NULL
1793 && obj_aout_external_syms (abfd) != NULL)
252b5132
RH		 1794 {
1795#ifdef USE_MMAP
1796 bfd_free_window (&obj_aout_sym_window (abfd));
1797#else
1798 free (obj_aout_external_syms (abfd));
1799#endif
1800 obj_aout_external_syms (abfd) = NULL;
1801 }
1802
b34976b6 1803 return TRUE;
252b5132
RH		 1804}
1805\f
1806/* We use a hash table when writing out symbols so that we only write
1807 out a particular string once. This helps particularly when the
1808 linker writes out stabs debugging entries, because each different
1809 contributing object file tends to have many duplicate stabs
1810 strings.
1811
1812 This hash table code breaks dbx on SunOS 4.1.3, so we don't do it
1813 if BFD_TRADITIONAL_FORMAT is set. */
1814
252b5132
RH		 1815/* Get the index of a string in a strtab, adding it if it is not
1816 already present. */
1817
116c20d2
NC		 1818static inline bfd_size_type
1819add_to_stringtab (bfd *abfd,
1820 struct bfd_strtab_hash *tab,
1821 const char *str,
1822 bfd_boolean copy)
252b5132 1823{
b34976b6 1824 bfd_boolean hash;
91d6fa6a 1825 bfd_size_type str_index;
252b5132
RH		 1826
1827 /* An index of 0 always means the empty string. */
1828 if (str == 0 || *str == '\0')
1829 return 0;
1830
1831 /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx
1832 doesn't understand a hashed string table. */
b34976b6 1833 hash = TRUE;
252b5132 1834 if ((abfd->flags & BFD_TRADITIONAL_FORMAT) != 0)
b34976b6 1835 hash = FALSE;
252b5132 1836
91d6fa6a 1837 str_index = _bfd_stringtab_add (tab, str, hash, copy);
252b5132 1838
91d6fa6a 1839 if (str_index != (bfd_size_type) -1)
116c20d2
NC		 1840 /* Add BYTES_IN_WORD to the return value to account for the
1841 space taken up by the string table size. */
91d6fa6a 1842 str_index += BYTES_IN_WORD;
252b5132 1843
91d6fa6a 1844 return str_index;
252b5132
RH		 1845}
1846
1847/* Write out a strtab. ABFD is already at the right location in the
1848 file. */
1849
b34976b6 1850static bfd_boolean
116c20d2 1851emit_stringtab (bfd *abfd, struct bfd_strtab_hash *tab)
252b5132
RH		 1852{
1853 bfd_byte buffer[BYTES_IN_WORD];
dc810e39 1854 bfd_size_type amt = BYTES_IN_WORD;
252b5132
RH		 1855
1856 /* The string table starts with the size. */
1857 PUT_WORD (abfd, _bfd_stringtab_size (tab) + BYTES_IN_WORD, buffer);
116c20d2 1858 if (bfd_bwrite ((void *) buffer, amt, abfd) != amt)
b34976b6 1859 return FALSE;
252b5132
RH		 1860
1861 return _bfd_stringtab_emit (abfd, tab);
1862}
1863\f
b34976b6 1864bfd_boolean
116c20d2 1865NAME (aout, write_syms) (bfd *abfd)
252b5132
RH		 1866{
1867 unsigned int count ;
1868 asymbol **generic = bfd_get_outsymbols (abfd);
1869 struct bfd_strtab_hash *strtab;
1870
1871 strtab = _bfd_stringtab_init ();
1872 if (strtab == NULL)
b34976b6 1873 return FALSE;
252b5132
RH		 1874
1875 for (count = 0; count < bfd_get_symcount (abfd); count++)
1876 {
1877 asymbol *g = generic[count];
1878 bfd_size_type indx;
1879 struct external_nlist nsp;
dc810e39 1880 bfd_size_type amt;
252b5132 1881
b34976b6 1882 indx = add_to_stringtab (abfd, strtab, g->name, FALSE);
252b5132
RH		 1883 if (indx == (bfd_size_type) -1)
1884 goto error_return;
1885 PUT_WORD (abfd, indx, (bfd_byte *) nsp.e_strx);
1886
923f08ff 1887 if (bfd_asymbol_flavour (g) == abfd->xvec->flavour)
252b5132 1888 {
923f08ff
AM		 1889 H_PUT_16 (abfd, aout_symbol (g)->desc, nsp.e_desc);
1890 H_PUT_8 (abfd, aout_symbol (g)->other, nsp.e_other);
1891 H_PUT_8 (abfd, aout_symbol (g)->type, nsp.e_type);
252b5132
RH		 1892 }
1893 else
1894 {
dc810e39
AM		 1895 H_PUT_16 (abfd, 0, nsp.e_desc);
1896 H_PUT_8 (abfd, 0, nsp.e_other);
1897 H_PUT_8 (abfd, 0, nsp.e_type);
252b5132
RH		 1898 }
1899
1900 if (! translate_to_native_sym_flags (abfd, g, &nsp))
1901 goto error_return;
1902
dc810e39 1903 amt = EXTERNAL_NLIST_SIZE;
116c20d2 1904 if (bfd_bwrite ((void *) &nsp, amt, abfd) != amt)
252b5132
RH		 1905 goto error_return;
1906
1907 /* NB: `KEEPIT' currently overlays `udata.p', so set this only
1908 here, at the end. */
1909 g->KEEPIT = count;
1910 }
1911
1912 if (! emit_stringtab (abfd, strtab))
1913 goto error_return;
1914
1915 _bfd_stringtab_free (strtab);
1916
b34976b6 1917 return TRUE;
252b5132
RH		 1918
1919error_return:
1920 _bfd_stringtab_free (strtab);
b34976b6 1921 return FALSE;
252b5132 1922}
252b5132
RH		 1923\f
1924long
116c20d2 1925NAME (aout, canonicalize_symtab) (bfd *abfd, asymbol **location)
252b5132 1926{
116c20d2
NC		 1927 unsigned int counter = 0;
1928 aout_symbol_type *symbase;
252b5132 1929
116c20d2
NC		 1930 if (!NAME (aout, slurp_symbol_table) (abfd))
1931 return -1;
252b5132 1932
116c20d2
NC		 1933 for (symbase = obj_aout_symbols (abfd);
1934 counter++ < bfd_get_symcount (abfd);
1935 )
1936 *(location++) = (asymbol *) (symbase++);
1937 *location++ =0;
1938 return bfd_get_symcount (abfd);
252b5132 1939}
252b5132 1940\f
f7c33884 1941/* Standard reloc stuff. */
0ef5a5bd 1942/* Output standard relocation information to a file in target byte order. */
252b5132 1943
116c20d2
NC		 1944extern void NAME (aout, swap_std_reloc_out)
1945 (bfd *, arelent *, struct reloc_std_external *);
252b5132
RH		 1946
1947void
116c20d2
NC		 1948NAME (aout, swap_std_reloc_out) (bfd *abfd,
1949 arelent *g,
1950 struct reloc_std_external *natptr)
252b5132
RH		 1951{
1952 int r_index;
1953 asymbol *sym = *(g->sym_ptr_ptr);
1954 int r_extern;
1955 unsigned int r_length;
1956 int r_pcrel;
1957 int r_baserel, r_jmptable, r_relative;
1958 asection *output_section = sym->section->output_section;
1959
923f08ff 1960 PUT_WORD (abfd, g->address, natptr->r_address);
252b5132 1961
e2996cc3 1962 BFD_ASSERT (g->howto != NULL);
f7c33884
NC		 1963 r_length = g->howto->size ; /* Size as a power of two. */
1964 r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */
252b5132
RH		 1965 /* XXX This relies on relocs coming from a.out files. */
1966 r_baserel = (g->howto->type & 8) != 0;
1967 r_jmptable = (g->howto->type & 16) != 0;
1968 r_relative = (g->howto->type & 32) != 0;
1969
f7c33884 1970 /* Name was clobbered by aout_write_syms to be symbol index. */
252b5132
RH		 1971
1972 /* If this relocation is relative to a symbol then set the
1973 r_index to the symbols index, and the r_extern bit.
1974
1975 Absolute symbols can come in in two ways, either as an offset
1976 from the abs section, or as a symbol which has an abs value.
f7c33884 1977 check for that here. */
252b5132 1978
252b5132
RH		 1979 if (bfd_is_com_section (output_section)
1980 || bfd_is_abs_section (output_section)
22184a77
NC		 1981 || bfd_is_und_section (output_section)
1982 /* PR gas/3041 a.out relocs against weak symbols
1983 must be treated as if they were against externs. */
1984 || (sym->flags & BSF_WEAK))
252b5132
RH		 1985 {
1986 if (bfd_abs_section_ptr->symbol == sym)
f7c33884
NC		 1987 {
1988 /* Whoops, looked like an abs symbol, but is
1989 really an offset from the abs section. */
1990 r_index = N_ABS;
1991 r_extern = 0;
1992 }
252b5132 1993 else
f7c33884
NC		 1994 {
1995 /* Fill in symbol. */
1996 r_extern = 1;
1997 r_index = (*(g->sym_ptr_ptr))->KEEPIT;
1998 }
252b5132
RH		 1999 }
2000 else
2001 {
f7c33884 2002 /* Just an ordinary section. */
252b5132
RH		 2003 r_extern = 0;
2004 r_index = output_section->target_index;
2005 }
2006
f7c33884 2007 /* Now the fun stuff. */
923f08ff
AM		 2008 if (bfd_header_big_endian (abfd))
2009 {
252b5132
RH		 2010 natptr->r_index[0] = r_index >> 16;
2011 natptr->r_index[1] = r_index >> 8;
2012 natptr->r_index[2] = r_index;
923f08ff
AM		 2013 natptr->r_type[0] = ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0)
2014 | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0)
2015 | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0)
2016 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0)
2017 | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0)
2018 | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG));
2019 }
2020 else
2021 {
2022 natptr->r_index[2] = r_index >> 16;
2023 natptr->r_index[1] = r_index >> 8;
2024 natptr->r_index[0] = r_index;
2025 natptr->r_type[0] = ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0)
2026 | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0)
2027 | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0)
2028 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0)
2029 | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0)
2030 | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE));
2031 }
252b5132
RH		 2032}
2033
f7c33884 2034/* Extended stuff. */
0ef5a5bd 2035/* Output extended relocation information to a file in target byte order. */
252b5132 2036
116c20d2
NC		 2037extern void NAME (aout, swap_ext_reloc_out)
2038 (bfd *, arelent *, struct reloc_ext_external *);
252b5132
RH		 2039
2040void
116c20d2
NC		 2041NAME (aout, swap_ext_reloc_out) (bfd *abfd,
2042 arelent *g,
2043 struct reloc_ext_external *natptr)
252b5132
RH		 2044{
2045 int r_index;
2046 int r_extern;
2047 unsigned int r_type;
dc810e39 2048 bfd_vma r_addend;
252b5132
RH		 2049 asymbol *sym = *(g->sym_ptr_ptr);
2050 asection *output_section = sym->section->output_section;
2051
2052 PUT_WORD (abfd, g->address, natptr->r_address);
2053
2054 r_type = (unsigned int) g->howto->type;
2055
2056 r_addend = g->addend;
2057 if ((sym->flags & BSF_SECTION_SYM) != 0)
2058 r_addend += (*(g->sym_ptr_ptr))->section->output_section->vma;
2059
2060 /* If this relocation is relative to a symbol then set the
2061 r_index to the symbols index, and the r_extern bit.
2062
2063 Absolute symbols can come in in two ways, either as an offset
2064 from the abs section, or as a symbol which has an abs value.
2065 check for that here. */
252b5132
RH		 2066 if (bfd_is_abs_section (bfd_get_section (sym)))
2067 {
2068 r_extern = 0;
2069 r_index = N_ABS;
2070 }
2071 else if ((sym->flags & BSF_SECTION_SYM) == 0)
2072 {
2073 if (bfd_is_und_section (bfd_get_section (sym))
2074 || (sym->flags & BSF_GLOBAL) != 0)
2075 r_extern = 1;
2076 else
2077 r_extern = 0;
2078 r_index = (*(g->sym_ptr_ptr))->KEEPIT;
2079 }
2080 else
2081 {
f7c33884 2082 /* Just an ordinary section. */
252b5132
RH		 2083 r_extern = 0;
2084 r_index = output_section->target_index;
2085 }
2086
f7c33884 2087 /* Now the fun stuff. */
923f08ff
AM		 2088 if (bfd_header_big_endian (abfd))
2089 {
2090 natptr->r_index[0] = r_index >> 16;
2091 natptr->r_index[1] = r_index >> 8;
2092 natptr->r_index[2] = r_index;
2093 natptr->r_type[0] = ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0)
2094 | (r_type << RELOC_EXT_BITS_TYPE_SH_BIG));
2095 }
2096 else
2097 {
2098 natptr->r_index[2] = r_index >> 16;
2099 natptr->r_index[1] = r_index >> 8;
2100 natptr->r_index[0] = r_index;
2101 natptr->r_type[0] = ((r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0)
2102 | (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE));
2103 }
252b5132
RH		 2104
2105 PUT_WORD (abfd, r_addend, natptr->r_addend);
2106}
2107
2108/* BFD deals internally with all things based from the section they're
2109 in. so, something in 10 bytes into a text section with a base of
2110 50 would have a symbol (.text+10) and know .text vma was 50.
2111
2112 Aout keeps all it's symbols based from zero, so the symbol would
2113 contain 60. This macro subs the base of each section from the value
923f08ff
AM		 2114 to give the true offset from the section. */
2115
2116#define MOVE_ADDRESS(ad) \
2117 if (r_extern) \
2118 { \
2119 /* Undefined symbol. */ \
2120 cache_ptr->sym_ptr_ptr = symbols + r_index; \
252b5132 2121 cache_ptr->addend = ad; \
252b5132 2122 } \
923f08ff
AM		 2123 else \
2124 { \
2125 /* Defined, section relative. Replace symbol with pointer to \
2126 symbol which points to section. */ \
2127 switch (r_index) \
2128 { \
2129 case N_TEXT: \
2130 case N_TEXT | N_EXT: \
2131 cache_ptr->sym_ptr_ptr = obj_textsec (abfd)->symbol_ptr_ptr; \
2132 cache_ptr->addend = ad - su->textsec->vma; \
2133 break; \
2134 case N_DATA: \
2135 case N_DATA | N_EXT: \
2136 cache_ptr->sym_ptr_ptr = obj_datasec (abfd)->symbol_ptr_ptr; \
2137 cache_ptr->addend = ad - su->datasec->vma; \
2138 break; \
2139 case N_BSS: \
2140 case N_BSS | N_EXT: \
2141 cache_ptr->sym_ptr_ptr = obj_bsssec (abfd)->symbol_ptr_ptr; \
2142 cache_ptr->addend = ad - su->bsssec->vma; \
2143 break; \
2144 default: \
2145 case N_ABS: \
2146 case N_ABS | N_EXT: \
2147 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \
2148 cache_ptr->addend = ad; \
2149 break; \
2150 } \
2151 }
252b5132
RH		 2152
2153void
116c20d2
NC		 2154NAME (aout, swap_ext_reloc_in) (bfd *abfd,
2155 struct reloc_ext_external *bytes,
2156 arelent *cache_ptr,
2157 asymbol **symbols,
2158 bfd_size_type symcount)
252b5132
RH		 2159{
2160 unsigned int r_index;
2161 int r_extern;
2162 unsigned int r_type;
2163 struct aoutdata *su = &(abfd->tdata.aout_data->a);
2164
2165 cache_ptr->address = (GET_SWORD (abfd, bytes->r_address));
2166
f7c33884 2167 /* Now the fun stuff. */
923f08ff
AM		 2168 if (bfd_header_big_endian (abfd))
2169 {
d45913a0
DA		 2170 r_index = (((unsigned int) bytes->r_index[0] << 16)
2171 | ((unsigned int) bytes->r_index[1] << 8)
923f08ff
AM		 2172 | bytes->r_index[2]);
2173 r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG));
2174 r_type = ((bytes->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
2175 >> RELOC_EXT_BITS_TYPE_SH_BIG);
2176 }
2177 else
2178 {
d45913a0
DA		 2179 r_index = (((unsigned int) bytes->r_index[2] << 16)
2180 | ((unsigned int) bytes->r_index[1] << 8)
923f08ff
AM		 2181 | bytes->r_index[0]);
2182 r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE));
2183 r_type = ((bytes->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
2184 >> RELOC_EXT_BITS_TYPE_SH_LITTLE);
2185 }
252b5132 2186
ad756e3f
AM		 2187 if (r_type < TABLE_SIZE (howto_table_ext))
2188 cache_ptr->howto = howto_table_ext + r_type;
2189 else
2190 cache_ptr->howto = NULL;
252b5132
RH		 2191
2192 /* Base relative relocs are always against the symbol table,
2193 regardless of the setting of r_extern. r_extern just reflects
2194 whether the symbol the reloc is against is local or global. */
d45913a0
DA		 2195 if (r_type == (unsigned int) RELOC_BASE10
2196 || r_type == (unsigned int) RELOC_BASE13
2197 || r_type == (unsigned int) RELOC_BASE22)
252b5132
RH		 2198 r_extern = 1;
2199
2200 if (r_extern && r_index > symcount)
2201 {
2202 /* We could arrange to return an error, but it might be useful
07d6d2b8 2203 to see the file even if it is bad. */
252b5132
RH		 2204 r_extern = 0;
2205 r_index = N_ABS;
2206 }
2207
923f08ff 2208 MOVE_ADDRESS (GET_SWORD (abfd, bytes->r_addend));
252b5132
RH		 2209}
2210
2211void
116c20d2
NC		 2212NAME (aout, swap_std_reloc_in) (bfd *abfd,
2213 struct reloc_std_external *bytes,
2214 arelent *cache_ptr,
2215 asymbol **symbols,
2216 bfd_size_type symcount)
252b5132
RH		 2217{
2218 unsigned int r_index;
2219 int r_extern;
2220 unsigned int r_length;
2221 int r_pcrel;
2222 int r_baserel, r_jmptable, r_relative;
2223 struct aoutdata *su = &(abfd->tdata.aout_data->a);
2224 unsigned int howto_idx;
2225
dc810e39 2226 cache_ptr->address = H_GET_32 (abfd, bytes->r_address);
252b5132 2227
f7c33884 2228 /* Now the fun stuff. */
923f08ff
AM		 2229 if (bfd_header_big_endian (abfd))
2230 {
d45913a0
DA		 2231 r_index = (((unsigned int) bytes->r_index[0] << 16)
2232 | ((unsigned int) bytes->r_index[1] << 8)
923f08ff
AM		 2233 | bytes->r_index[2]);
2234 r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
2235 r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
2236 r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_BIG));
2237 r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG));
2238 r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG));
2239 r_length = ((bytes->r_type[0] & RELOC_STD_BITS_LENGTH_BIG)
2240 >> RELOC_STD_BITS_LENGTH_SH_BIG);
2241 }
2242 else
2243 {
d45913a0
DA		 2244 r_index = (((unsigned int) bytes->r_index[2] << 16)
2245 | ((unsigned int) bytes->r_index[1] << 8)
923f08ff
AM		 2246 | bytes->r_index[0]);
2247 r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
2248 r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
2249 r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE));
2250 r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE));
2251 r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE));
2252 r_length = ((bytes->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE)
2253 >> RELOC_STD_BITS_LENGTH_SH_LITTLE);
2254 }
252b5132 2255
923f08ff
AM		 2256 howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel
2257 + 16 * r_jmptable + 32 * r_relative);
ad756e3f
AM		 2258 if (howto_idx < TABLE_SIZE (howto_table_std))
2259 {
2260 cache_ptr->howto = howto_table_std + howto_idx;
2261 if (cache_ptr->howto->type == (unsigned int) -1)
2262 cache_ptr->howto = NULL;
2263 }
2264 else
2265 cache_ptr->howto = NULL;
252b5132
RH		 2266
2267 /* Base relative relocs are always against the symbol table,
2268 regardless of the setting of r_extern. r_extern just reflects
2269 whether the symbol the reloc is against is local or global. */
2270 if (r_baserel)
2271 r_extern = 1;
2272
116acb2c 2273 if (r_extern && r_index >= symcount)
252b5132
RH		 2274 {
2275 /* We could arrange to return an error, but it might be useful
116acb2c
AM		 2276 to see the file even if it is bad. FIXME: Of course this
2277 means that objdump -r *doesn't* see the actual reloc, and
2278 objcopy silently writes a different reloc. */
252b5132
RH		 2279 r_extern = 0;
2280 r_index = N_ABS;
2281 }
2282
923f08ff 2283 MOVE_ADDRESS (0);
252b5132
RH		 2284}
2285
2286/* Read and swap the relocs for a section. */
2287
b34976b6 2288bfd_boolean
116c20d2 2289NAME (aout, slurp_reloc_table) (bfd *abfd, sec_ptr asect, asymbol **symbols)
252b5132 2290{
dc810e39 2291 bfd_size_type count;
252b5132 2292 bfd_size_type reloc_size;
116c20d2 2293 void * relocs;
252b5132
RH		 2294 arelent *reloc_cache;
2295 size_t each_size;
2296 unsigned int counter = 0;
2297 arelent *cache_ptr;
dc810e39 2298 bfd_size_type amt;
252b5132
RH		 2299
2300 if (asect->relocation)
b34976b6 2301 return TRUE;
252b5132
RH		 2302
2303 if (asect->flags & SEC_CONSTRUCTOR)
b34976b6 2304 return TRUE;
252b5132
RH		 2305
2306 if (asect == obj_datasec (abfd))
923f08ff 2307 reloc_size = exec_hdr (abfd)->a_drsize;
252b5132 2308 else if (asect == obj_textsec (abfd))
923f08ff 2309 reloc_size = exec_hdr (abfd)->a_trsize;
252b5132
RH		 2310 else if (asect == obj_bsssec (abfd))
2311 reloc_size = 0;
2312 else
2313 {
2314 bfd_set_error (bfd_error_invalid_operation);
b34976b6 2315 return FALSE;
252b5132
RH		 2316 }
2317
078c4bfc
MS		 2318 if (reloc_size == 0)
2319 return TRUE; /* Nothing to be done. */
2320
252b5132 2321 if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0)
b34976b6 2322 return FALSE;
252b5132
RH		 2323
2324 each_size = obj_reloc_entry_size (abfd);
2325
2326 count = reloc_size / each_size;
078c4bfc
MS		 2327 if (count == 0)
2328 return TRUE; /* Nothing to be done. */
252b5132 2329
dc810e39 2330 amt = count * sizeof (arelent);
a50b1753 2331 reloc_cache = (arelent *) bfd_zmalloc (amt);
078c4bfc 2332 if (reloc_cache == NULL)
b34976b6 2333 return FALSE;
252b5132 2334
dc810e39 2335 relocs = bfd_malloc (reloc_size);
078c4bfc 2336 if (relocs == NULL)
252b5132
RH		 2337 {
2338 free (reloc_cache);
b34976b6 2339 return FALSE;
252b5132
RH		 2340 }
2341
dc810e39 2342 if (bfd_bread (relocs, reloc_size, abfd) != reloc_size)
252b5132
RH		 2343 {
2344 free (relocs);
2345 free (reloc_cache);
b34976b6 2346 return FALSE;
252b5132
RH		 2347 }
2348
2349 cache_ptr = reloc_cache;
2350 if (each_size == RELOC_EXT_SIZE)
2351 {
dc810e39 2352 struct reloc_ext_external *rptr = (struct reloc_ext_external *) relocs;
252b5132
RH		 2353
2354 for (; counter < count; counter++, rptr++, cache_ptr++)
1642229e 2355 MY_swap_ext_reloc_in (abfd, rptr, cache_ptr, symbols,
dc810e39 2356 (bfd_size_type) bfd_get_symcount (abfd));
252b5132
RH		 2357 }
2358 else
2359 {
dc810e39 2360 struct reloc_std_external *rptr = (struct reloc_std_external *) relocs;
252b5132
RH		 2361
2362 for (; counter < count; counter++, rptr++, cache_ptr++)
2363 MY_swap_std_reloc_in (abfd, rptr, cache_ptr, symbols,
dc810e39 2364 (bfd_size_type) bfd_get_symcount (abfd));
252b5132
RH		 2365 }
2366
2367 free (relocs);
2368
2369 asect->relocation = reloc_cache;
2370 asect->reloc_count = cache_ptr - reloc_cache;
2371
b34976b6 2372 return TRUE;
252b5132
RH		 2373}
2374
2375/* Write out a relocation section into an object file. */
2376
b34976b6 2377bfd_boolean
116c20d2 2378NAME (aout, squirt_out_relocs) (bfd *abfd, asection *section)
252b5132
RH		 2379{
2380 arelent **generic;
2381 unsigned char *native, *natptr;
2382 size_t each_size;
2383
2384 unsigned int count = section->reloc_count;
dc810e39 2385 bfd_size_type natsize;
252b5132
RH		 2386
2387 if (count == 0 || section->orelocation == NULL)
b34976b6 2388 return TRUE;
252b5132
RH		 2389
2390 each_size = obj_reloc_entry_size (abfd);
dc810e39 2391 natsize = (bfd_size_type) each_size * count;
a50b1753 2392 native = (unsigned char *) bfd_zalloc (abfd, natsize);
252b5132 2393 if (!native)
b34976b6 2394 return FALSE;
252b5132
RH		 2395
2396 generic = section->orelocation;
2397
2398 if (each_size == RELOC_EXT_SIZE)
2399 {
2400 for (natptr = native;
2401 count != 0;
2402 --count, natptr += each_size, ++generic)
e2996cc3 2403 {
92744f05
NC		 2404 /* PR 20921: If the howto field has not been initialised then skip
2405 this reloc.
2406 PR 20929: Similarly for the symbol field. */
2407 if ((*generic)->howto == NULL
2408 || (*generic)->sym_ptr_ptr == NULL)
e2996cc3
NC		 2409 {
2410 bfd_set_error (bfd_error_invalid_operation);
92744f05 2411 _bfd_error_handler (_("\
871b3ab2 2412%pB: attempt to write out unknown reloc type"), abfd);
e2996cc3
NC		 2413 return FALSE;
2414 }
2415 MY_swap_ext_reloc_out (abfd, *generic,
2416 (struct reloc_ext_external *) natptr);
2417 }
252b5132
RH		 2418 }
2419 else
2420 {
2421 for (natptr = native;
2422 count != 0;
2423 --count, natptr += each_size, ++generic)
e2996cc3 2424 {
92744f05
NC		 2425 if ((*generic)->howto == NULL
2426 || (*generic)->sym_ptr_ptr == NULL)
e2996cc3
NC		 2427 {
2428 bfd_set_error (bfd_error_invalid_operation);
92744f05 2429 _bfd_error_handler (_("\
871b3ab2 2430%pB: attempt to write out unknown reloc type"), abfd);
e2996cc3
NC		 2431 return FALSE;
2432 }
2433 MY_swap_std_reloc_out (abfd, *generic,
2434 (struct reloc_std_external *) natptr);
2435 }
252b5132
RH		 2436 }
2437
116c20d2 2438 if (bfd_bwrite ((void *) native, natsize, abfd) != natsize)
dc810e39 2439 {
923f08ff 2440 bfd_release (abfd, native);
b34976b6 2441 return FALSE;
dc810e39 2442 }
252b5132
RH		 2443 bfd_release (abfd, native);
2444
b34976b6 2445 return TRUE;
252b5132
RH		 2446}
2447
f7c33884
NC		 2448/* This is stupid. This function should be a boolean predicate. */
2449
252b5132 2450long
116c20d2
NC		 2451NAME (aout, canonicalize_reloc) (bfd *abfd,
2452 sec_ptr section,
2453 arelent **relptr,
2454 asymbol **symbols)
252b5132
RH		 2455{
2456 arelent *tblptr = section->relocation;
2457 unsigned int count;
2458
2459 if (section == obj_bsssec (abfd))
2460 {
2461 *relptr = NULL;
2462 return 0;
2463 }
2464
116c20d2 2465 if (!(tblptr || NAME (aout, slurp_reloc_table) (abfd, section, symbols)))
252b5132
RH		 2466 return -1;
2467
923f08ff
AM		 2468 if (section->flags & SEC_CONSTRUCTOR)
2469 {
2470 arelent_chain *chain = section->constructor_chain;
2471 for (count = 0; count < section->reloc_count; count ++)
2472 {
2473 *relptr ++ = &chain->relent;
2474 chain = chain->next;
2475 }
252b5132 2476 }
923f08ff
AM		 2477 else
2478 {
2479 tblptr = section->relocation;
252b5132 2480
923f08ff
AM		 2481 for (count = 0; count++ < section->reloc_count; )
2482 {
2483 *relptr++ = tblptr++;
2484 }
2485 }
252b5132
RH		 2486 *relptr = 0;
2487
2488 return section->reloc_count;
2489}
2490
2491long
116c20d2 2492NAME (aout, get_reloc_upper_bound) (bfd *abfd, sec_ptr asect)
252b5132 2493{
923f08ff
AM		 2494 if (bfd_get_format (abfd) != bfd_object)
2495 {
2496 bfd_set_error (bfd_error_invalid_operation);
2497 return -1;
2498 }
f7c33884 2499
923f08ff 2500 if (asect->flags & SEC_CONSTRUCTOR)
116c20d2 2501 return sizeof (arelent *) * (asect->reloc_count + 1);
252b5132
RH		 2502
2503 if (asect == obj_datasec (abfd))
116c20d2
NC		 2504 return sizeof (arelent *)
2505 * ((exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd))
2506 + 1);
252b5132
RH		 2507
2508 if (asect == obj_textsec (abfd))
116c20d2
NC		 2509 return sizeof (arelent *)
2510 * ((exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd))
2511 + 1);
252b5132
RH		 2512
2513 if (asect == obj_bsssec (abfd))
2514 return sizeof (arelent *);
2515
2516 if (asect == obj_bsssec (abfd))
2517 return 0;
2518
2519 bfd_set_error (bfd_error_invalid_operation);
2520 return -1;
2521}
252b5132
RH		 2522\f
2523long
116c20d2 2524NAME (aout, get_symtab_upper_bound) (bfd *abfd)
252b5132 2525{
116c20d2 2526 if (!NAME (aout, slurp_symbol_table) (abfd))
252b5132
RH		 2527 return -1;
2528
2529 return (bfd_get_symcount (abfd)+1) * (sizeof (aout_symbol_type *));
2530}
2531
1725a96e 2532alent *
116c20d2
NC		 2533NAME (aout, get_lineno) (bfd *ignore_abfd ATTRIBUTE_UNUSED,
2534 asymbol *ignore_symbol ATTRIBUTE_UNUSED)
252b5132 2535{
116c20d2 2536 return NULL;
252b5132
RH		 2537}
2538
252b5132 2539void
116c20d2
NC		 2540NAME (aout, get_symbol_info) (bfd *ignore_abfd ATTRIBUTE_UNUSED,
2541 asymbol *symbol,
2542 symbol_info *ret)
252b5132
RH		 2543{
2544 bfd_symbol_info (symbol, ret);
2545
2546 if (ret->type == '?')
2547 {
923f08ff 2548 int type_code = aout_symbol (symbol)->type & 0xff;
252b5132
RH		 2549 const char *stab_name = bfd_get_stab_name (type_code);
2550 static char buf[10];
2551
2552 if (stab_name == NULL)
2553 {
e60b52c6 2554 sprintf (buf, "(%d)", type_code);
252b5132
RH		 2555 stab_name = buf;
2556 }
2557 ret->type = '-';
2558 ret->stab_type = type_code;
923f08ff
AM		 2559 ret->stab_other = (unsigned) (aout_symbol (symbol)->other & 0xff);
2560 ret->stab_desc = (unsigned) (aout_symbol (symbol)->desc & 0xffff);
252b5132
RH		 2561 ret->stab_name = stab_name;
2562 }
2563}
2564
252b5132 2565void
116c20d2
NC		 2566NAME (aout, print_symbol) (bfd *abfd,
2567 void * afile,
2568 asymbol *symbol,
2569 bfd_print_symbol_type how)
252b5132
RH		 2570{
2571 FILE *file = (FILE *)afile;
2572
923f08ff 2573 switch (how)
252b5132 2574 {
923f08ff
AM		 2575 case bfd_print_symbol_name:
2576 if (symbol->name)
2577 fprintf (file,"%s", symbol->name);
2578 break;
2579 case bfd_print_symbol_more:
2580 fprintf (file,"%4x %2x %2x",
2581 (unsigned) (aout_symbol (symbol)->desc & 0xffff),
2582 (unsigned) (aout_symbol (symbol)->other & 0xff),
2583 (unsigned) (aout_symbol (symbol)->type));
2584 break;
2585 case bfd_print_symbol_all:
2586 {
2587 const char *section_name = symbol->section->name;
252b5132 2588
116c20d2 2589 bfd_print_symbol_vandf (abfd, (void *)file, symbol);
252b5132 2590
923f08ff
AM		 2591 fprintf (file," %-5s %04x %02x %02x",
2592 section_name,
2593 (unsigned) (aout_symbol (symbol)->desc & 0xffff),
2594 (unsigned) (aout_symbol (symbol)->other & 0xff),
2595 (unsigned) (aout_symbol (symbol)->type & 0xff));
2596 if (symbol->name)
2597 fprintf (file," %s", symbol->name);
2598 }
2599 break;
252b5132 2600 }
252b5132
RH		 2601}
2602
2603/* If we don't have to allocate more than 1MB to hold the generic
2604 symbols, we use the generic minisymbol methord: it's faster, since
2605 it only translates the symbols once, not multiple times. */
2606#define MINISYM_THRESHOLD (1000000 / sizeof (asymbol))
2607
2608/* Read minisymbols. For minisymbols, we use the unmodified a.out
2609 symbols. The minisymbol_to_symbol function translates these into
2610 BFD asymbol structures. */
2611
2612long
116c20d2
NC		 2613NAME (aout, read_minisymbols) (bfd *abfd,
2614 bfd_boolean dynamic,
2615 void * *minisymsp,
2616 unsigned int *sizep)
252b5132
RH		 2617{
2618 if (dynamic)
116c20d2
NC		 2619 /* We could handle the dynamic symbols here as well, but it's
2620 easier to hand them off. */
2621 return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep);
252b5132
RH		 2622
2623 if (! aout_get_external_symbols (abfd))
2624 return -1;
2625
2626 if (obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD)
2627 return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep);
2628
116c20d2 2629 *minisymsp = (void *) obj_aout_external_syms (abfd);
252b5132
RH		 2630
2631 /* By passing the external symbols back from this routine, we are
2632 giving up control over the memory block. Clear
2633 obj_aout_external_syms, so that we do not try to free it
2634 ourselves. */
2635 obj_aout_external_syms (abfd) = NULL;
2636
2637 *sizep = EXTERNAL_NLIST_SIZE;
2638 return obj_aout_external_sym_count (abfd);
2639}
2640
2641/* Convert a minisymbol to a BFD asymbol. A minisymbol is just an
2642 unmodified a.out symbol. The SYM argument is a structure returned
2643 by bfd_make_empty_symbol, which we fill in here. */
2644
2645asymbol *
116c20d2
NC		 2646NAME (aout, minisymbol_to_symbol) (bfd *abfd,
2647 bfd_boolean dynamic,
2648 const void * minisym,
2649 asymbol *sym)
252b5132
RH		 2650{
2651 if (dynamic
2652 || obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD)
2653 return _bfd_generic_minisymbol_to_symbol (abfd, dynamic, minisym, sym);
2654
2655 memset (sym, 0, sizeof (aout_symbol_type));
2656
2657 /* We call translate_symbol_table to translate a single symbol. */
116c20d2 2658 if (! (NAME (aout, translate_symbol_table)
252b5132
RH		 2659 (abfd,
2660 (aout_symbol_type *) sym,
2661 (struct external_nlist *) minisym,
2662 (bfd_size_type) 1,
2663 obj_aout_external_strings (abfd),
2664 obj_aout_external_string_size (abfd),
b34976b6 2665 FALSE)))
252b5132
RH		 2666 return NULL;
2667
2668 return sym;
2669}
2670
f7c33884
NC		 2671/* Provided a BFD, a section and an offset into the section, calculate
2672 and return the name of the source file and the line nearest to the
2673 wanted location. */
252b5132 2674
b34976b6 2675bfd_boolean
116c20d2 2676NAME (aout, find_nearest_line) (bfd *abfd,
116c20d2 2677 asymbol **symbols,
fb167eb2 2678 asection *section,
116c20d2
NC		 2679 bfd_vma offset,
2680 const char **filename_ptr,
2681 const char **functionname_ptr,
fb167eb2
AM		 2682 unsigned int *line_ptr,
2683 unsigned int *disriminator_ptr)
252b5132 2684{
f7c33884 2685 /* Run down the file looking for the filename, function and linenumber. */
252b5132 2686 asymbol **p;
dc810e39
AM		 2687 const char *directory_name = NULL;
2688 const char *main_file_name = NULL;
2689 const char *current_file_name = NULL;
116c20d2 2690 const char *line_file_name = NULL; /* Value of current_file_name at line number. */
dc810e39 2691 const char *line_directory_name = NULL; /* Value of directory_name at line number. */
252b5132
RH		 2692 bfd_vma low_line_vma = 0;
2693 bfd_vma low_func_vma = 0;
2694 asymbol *func = 0;
dc810e39 2695 bfd_size_type filelen, funclen;
252b5132
RH		 2696 char *buf;
2697
2698 *filename_ptr = abfd->filename;
50455f1a 2699 *functionname_ptr = NULL;
252b5132 2700 *line_ptr = 0;
fb167eb2
AM		 2701 if (disriminator_ptr)
2702 *disriminator_ptr = 0;
f7c33884 2703
116c20d2 2704 if (symbols != NULL)
923f08ff
AM		 2705 {
2706 for (p = symbols; *p; p++)
2707 {
2708 aout_symbol_type *q = (aout_symbol_type *) (*p);
2709 next:
2710 switch (q->type)
2711 {
2712 case N_TEXT:
2713 /* If this looks like a file name symbol, and it comes after
2714 the line number we have found so far, but before the
2715 offset, then we have probably not found the right line
2716 number. */
2717 if (q->symbol.value <= offset
2718 && ((q->symbol.value > low_line_vma
2719 && (line_file_name != NULL
2720 || *line_ptr != 0))
2721 || (q->symbol.value > low_func_vma
2722 && func != NULL)))
2723 {
2724 const char *symname;
252b5132 2725
923f08ff 2726 symname = q->symbol.name;
808346fc
NC		 2727
2728 if (symname != NULL
2729 && strlen (symname) > 2
2730 && strcmp (symname + strlen (symname) - 2, ".o") == 0)
923f08ff
AM		 2731 {
2732 if (q->symbol.value > low_line_vma)
2733 {
2734 *line_ptr = 0;
2735 line_file_name = NULL;
2736 }
2737 if (q->symbol.value > low_func_vma)
2738 func = NULL;
2739 }
2740 }
2741 break;
252b5132 2742
923f08ff
AM		 2743 case N_SO:
2744 /* If this symbol is less than the offset, but greater than
2745 the line number we have found so far, then we have not
2746 found the right line number. */
2747 if (q->symbol.value <= offset)
2748 {
2749 if (q->symbol.value > low_line_vma)
2750 {
2751 *line_ptr = 0;
2752 line_file_name = NULL;
2753 }
2754 if (q->symbol.value > low_func_vma)
2755 func = NULL;
2756 }
252b5132 2757
923f08ff
AM		 2758 main_file_name = current_file_name = q->symbol.name;
2759 /* Look ahead to next symbol to check if that too is an N_SO. */
2760 p++;
2761 if (*p == NULL)
c3864421 2762 goto done;
923f08ff
AM		 2763 q = (aout_symbol_type *) (*p);
2764 if (q->type != (int)N_SO)
2765 goto next;
2766
2767 /* Found a second N_SO First is directory; second is filename. */
2768 directory_name = current_file_name;
2769 main_file_name = current_file_name = q->symbol.name;
2770 if (obj_textsec (abfd) != section)
2771 goto done;
2772 break;
2773 case N_SOL:
2774 current_file_name = q->symbol.name;
2775 break;
252b5132 2776
923f08ff 2777 case N_SLINE:
252b5132 2778
923f08ff
AM		 2779 case N_DSLINE:
2780 case N_BSLINE:
2781 /* We'll keep this if it resolves nearer than the one we have
2782 already. */
2783 if (q->symbol.value >= low_line_vma
2784 && q->symbol.value <= offset)
2785 {
2786 *line_ptr = q->desc;
2787 low_line_vma = q->symbol.value;
2788 line_file_name = current_file_name;
2789 line_directory_name = directory_name;
2790 }
2791 break;
2792 case N_FUN:
2793 {
f7c33884 2794 /* We'll keep this if it is nearer than the one we have already. */
808346fc
NC		 2795 if (q->symbol.value >= low_func_vma
2796 && q->symbol.value <= offset)
f7c33884
NC		 2797 {
2798 low_func_vma = q->symbol.value;
2799 func = (asymbol *)q;
2800 }
923f08ff
AM		 2801 else if (q->symbol.value > offset)
2802 goto done;
2803 }
2804 break;
2805 }
252b5132 2806 }
252b5132 2807 }
252b5132
RH		 2808
2809 done:
2810 if (*line_ptr != 0)
2811 {
2812 main_file_name = line_file_name;
2813 directory_name = line_directory_name;
2814 }
2815
2816 if (main_file_name == NULL
5af11cab 2817 || IS_ABSOLUTE_PATH (main_file_name)
252b5132
RH		 2818 || directory_name == NULL)
2819 filelen = 0;
2820 else
2821 filelen = strlen (directory_name) + strlen (main_file_name);
f7c33884 2822
252b5132
RH		 2823 if (func == NULL)
2824 funclen = 0;
2825 else
2826 funclen = strlen (bfd_asymbol_name (func));
2827
2828 if (adata (abfd).line_buf != NULL)
2829 free (adata (abfd).line_buf);
f7c33884 2830
252b5132
RH		 2831 if (filelen + funclen == 0)
2832 adata (abfd).line_buf = buf = NULL;
2833 else
2834 {
a50b1753 2835 buf = (char *) bfd_malloc (filelen + funclen + 3);
252b5132
RH		 2836 adata (abfd).line_buf = buf;
2837 if (buf == NULL)
b34976b6 2838 return FALSE;
252b5132
RH		 2839 }
2840
2841 if (main_file_name != NULL)
2842 {
5af11cab 2843 if (IS_ABSOLUTE_PATH (main_file_name) || directory_name == NULL)
252b5132
RH		 2844 *filename_ptr = main_file_name;
2845 else
2846 {
50455f1a
NC		 2847 if (buf == NULL)
2848 /* PR binutils/20891: In a corrupt input file both
2849 main_file_name and directory_name can be empty... */
2850 * filename_ptr = NULL;
2851 else
2852 {
2853 snprintf (buf, filelen + 1, "%s%s", directory_name,
2854 main_file_name);
2855 *filename_ptr = buf;
2856 buf += filelen + 1;
2857 }
252b5132
RH		 2858 }
2859 }
2860
2861 if (func)
2862 {
2863 const char *function = func->name;
dc810e39 2864 char *colon;
252b5132 2865
e82ab856
NC		 2866 if (buf == NULL)
2867 {
2868 /* PR binutils/20892: In a corrupt input file func can be empty. */
2869 * functionname_ptr = NULL;
2870 return TRUE;
2871 }
252b5132
RH		 2872 /* The caller expects a symbol name. We actually have a
2873 function name, without the leading underscore. Put the
2874 underscore back in, so that the caller gets a symbol name. */
2875 if (bfd_get_symbol_leading_char (abfd) == '\0')
2876 strcpy (buf, function);
2877 else
2878 {
2879 buf[0] = bfd_get_symbol_leading_char (abfd);
2880 strcpy (buf + 1, function);
2881 }
f7c33884 2882 /* Have to remove : stuff. */
dc810e39
AM		 2883 colon = strchr (buf, ':');
2884 if (colon != NULL)
2885 *colon = '\0';
252b5132
RH		 2886 *functionname_ptr = buf;
2887 }
2888
b34976b6 2889 return TRUE;
252b5132
RH		 2890}
2891
252b5132 2892int
a6b96beb
AM		 2893NAME (aout, sizeof_headers) (bfd *abfd,
2894 struct bfd_link_info *info ATTRIBUTE_UNUSED)
252b5132 2895{
923f08ff 2896 return adata (abfd).exec_bytes_size;
252b5132
RH		 2897}
2898
2899/* Free all information we have cached for this BFD. We can always
2900 read it again later if we need it. */
2901
b34976b6 2902bfd_boolean
116c20d2 2903NAME (aout, bfd_free_cached_info) (bfd *abfd)
252b5132
RH		 2904{
2905 asection *o;
2906
920581c5
L		 2907 if (bfd_get_format (abfd) != bfd_object
2908 || abfd->tdata.aout_data == NULL)
b34976b6 2909 return TRUE;
252b5132
RH		 2910
2911#define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; }
2912 BFCI_FREE (obj_aout_symbols (abfd));
2913#ifdef USE_MMAP
2914 obj_aout_external_syms (abfd) = 0;
2915 bfd_free_window (&obj_aout_sym_window (abfd));
2916 bfd_free_window (&obj_aout_string_window (abfd));
2917 obj_aout_external_strings (abfd) = 0;
2918#else
2919 BFCI_FREE (obj_aout_external_syms (abfd));
2920 BFCI_FREE (obj_aout_external_strings (abfd));
2921#endif
116c20d2 2922 for (o = abfd->sections; o != NULL; o = o->next)
252b5132
RH		 2923 BFCI_FREE (o->relocation);
2924#undef BFCI_FREE
2925
b34976b6 2926 return TRUE;
252b5132
RH		 2927}
2928\f
2929/* a.out link code. */
2930
252b5132
RH		 2931/* Routine to create an entry in an a.out link hash table. */
2932
2933struct bfd_hash_entry *
116c20d2
NC		 2934NAME (aout, link_hash_newfunc) (struct bfd_hash_entry *entry,
2935 struct bfd_hash_table *table,
2936 const char *string)
252b5132
RH		 2937{
2938 struct aout_link_hash_entry *ret = (struct aout_link_hash_entry *) entry;
2939
2940 /* Allocate the structure if it has not already been allocated by a
2941 subclass. */
116c20d2 2942 if (ret == NULL)
a50b1753 2943 ret = (struct aout_link_hash_entry *) bfd_hash_allocate (table,
07d6d2b8 2944 sizeof (* ret));
116c20d2
NC		 2945 if (ret == NULL)
2946 return NULL;
252b5132
RH		 2947
2948 /* Call the allocation method of the superclass. */
2949 ret = ((struct aout_link_hash_entry *)
2950 _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2951 table, string));
2952 if (ret)
2953 {
2954 /* Set local fields. */
b34976b6 2955 ret->written = FALSE;
252b5132
RH		 2956 ret->indx = -1;
2957 }
2958
2959 return (struct bfd_hash_entry *) ret;
2960}
2961
2962/* Initialize an a.out link hash table. */
2963
b34976b6 2964bfd_boolean
116c20d2
NC		 2965NAME (aout, link_hash_table_init) (struct aout_link_hash_table *table,
2966 bfd *abfd,
2967 struct bfd_hash_entry *(*newfunc)
2968 (struct bfd_hash_entry *, struct bfd_hash_table *,
66eb6687
AM		 2969 const char *),
2970 unsigned int entsize)
252b5132 2971{
66eb6687 2972 return _bfd_link_hash_table_init (&table->root, abfd, newfunc, entsize);
252b5132
RH		 2973}
2974
2975/* Create an a.out link hash table. */
2976
2977struct bfd_link_hash_table *
116c20d2 2978NAME (aout, link_hash_table_create) (bfd *abfd)
252b5132
RH		 2979{
2980 struct aout_link_hash_table *ret;
116c20d2 2981 bfd_size_type amt = sizeof (* ret);
252b5132 2982
a50b1753 2983 ret = (struct aout_link_hash_table *) bfd_malloc (amt);
252b5132 2984 if (ret == NULL)
116c20d2 2985 return NULL;
5ed6aba4 2986
66eb6687
AM		 2987 if (!NAME (aout, link_hash_table_init) (ret, abfd,
2988 NAME (aout, link_hash_newfunc),
2989 sizeof (struct aout_link_hash_entry)))
252b5132
RH		 2990 {
2991 free (ret);
116c20d2 2992 return NULL;
252b5132
RH		 2993 }
2994 return &ret->root;
2995}
2996
116c20d2 2997/* Add all symbols from an object file to the hash table. */
252b5132 2998
b34976b6 2999static bfd_boolean
116c20d2 3000aout_link_add_symbols (bfd *abfd, struct bfd_link_info *info)
252b5132 3001{
116c20d2
NC		 3002 bfd_boolean (*add_one_symbol)
3003 (struct bfd_link_info *, bfd *, const char *, flagword, asection *,
3004 bfd_vma, const char *, bfd_boolean, bfd_boolean,
3005 struct bfd_link_hash_entry **);
3006 struct external_nlist *syms;
3007 bfd_size_type sym_count;
3008 char *strings;
3009 bfd_boolean copy;
3010 struct aout_link_hash_entry **sym_hash;
3011 struct external_nlist *p;
3012 struct external_nlist *pend;
3013 bfd_size_type amt;
252b5132 3014
116c20d2
NC		 3015 syms = obj_aout_external_syms (abfd);
3016 sym_count = obj_aout_external_sym_count (abfd);
3017 strings = obj_aout_external_strings (abfd);
3018 if (info->keep_memory)
3019 copy = FALSE;
3020 else
3021 copy = TRUE;
252b5132 3022
116c20d2 3023 if (aout_backend_info (abfd)->add_dynamic_symbols != NULL)
252b5132 3024 {
116c20d2
NC		 3025 if (! ((*aout_backend_info (abfd)->add_dynamic_symbols)
3026 (abfd, info, &syms, &sym_count, &strings)))
b34976b6 3027 return FALSE;
252b5132
RH		 3028 }
3029
20c6e70e
MS		 3030 if (sym_count == 0)
3031 return TRUE; /* Nothing to do. */
3032
116c20d2
NC		 3033 /* We keep a list of the linker hash table entries that correspond
3034 to particular symbols. We could just look them up in the hash
3035 table, but keeping the list is more efficient. Perhaps this
3036 should be conditional on info->keep_memory. */
3037 amt = sym_count * sizeof (struct aout_link_hash_entry *);
a50b1753 3038 sym_hash = (struct aout_link_hash_entry **) bfd_alloc (abfd, amt);
20c6e70e 3039 if (sym_hash == NULL)
116c20d2
NC		 3040 return FALSE;
3041 obj_aout_sym_hashes (abfd) = sym_hash;
252b5132 3042
116c20d2
NC		 3043 add_one_symbol = aout_backend_info (abfd)->add_one_symbol;
3044 if (add_one_symbol == NULL)
3045 add_one_symbol = _bfd_generic_link_add_one_symbol;
252b5132 3046
116c20d2
NC		 3047 p = syms;
3048 pend = p + sym_count;
3049 for (; p < pend; p++, sym_hash++)
252b5132 3050 {
116c20d2 3051 int type;
252b5132 3052 const char *name;
116c20d2
NC		 3053 bfd_vma value;
3054 asection *section;
3055 flagword flags;
3056 const char *string;
252b5132 3057
116c20d2 3058 *sym_hash = NULL;
252b5132 3059
116c20d2 3060 type = H_GET_8 (abfd, p->e_type);
252b5132 3061
116c20d2
NC		 3062 /* Ignore debugging symbols. */
3063 if ((type & N_STAB) != 0)
3064 continue;
252b5132 3065
e517df3d 3066 /* PR 19629: Corrupt binaries can contain illegal string offsets. */
531336e3 3067 if (GET_WORD (abfd, p->e_strx) >= obj_aout_external_string_size (abfd))
e517df3d 3068 return FALSE;
116c20d2
NC		 3069 name = strings + GET_WORD (abfd, p->e_strx);
3070 value = GET_WORD (abfd, p->e_value);
3071 flags = BSF_GLOBAL;
3072 string = NULL;
3073 switch (type)
252b5132 3074 {
116c20d2
NC		 3075 default:
3076 abort ();
f7c33884 3077
116c20d2
NC		 3078 case N_UNDF:
3079 case N_ABS:
3080 case N_TEXT:
3081 case N_DATA:
3082 case N_BSS:
3083 case N_FN_SEQ:
3084 case N_COMM:
3085 case N_SETV:
3086 case N_FN:
3087 /* Ignore symbols that are not externally visible. */
3088 continue;
3089 case N_INDR:
3090 /* Ignore local indirect symbol. */
3091 ++p;
3092 ++sym_hash;
3093 continue;
252b5132 3094
116c20d2
NC		 3095 case N_UNDF | N_EXT:
3096 if (value == 0)
f7c33884 3097 {
116c20d2
NC		 3098 section = bfd_und_section_ptr;
3099 flags = 0;
252b5132
RH		 3100 }
3101 else
3102 section = bfd_com_section_ptr;
3103 break;
3104 case N_ABS | N_EXT:
3105 section = bfd_abs_section_ptr;
3106 break;
3107 case N_TEXT | N_EXT:
3108 section = obj_textsec (abfd);
3109 value -= bfd_get_section_vma (abfd, section);
3110 break;
3111 case N_DATA | N_EXT:
3112 case N_SETV | N_EXT:
3113 /* Treat N_SETV symbols as N_DATA symbol; see comment in
3114 translate_from_native_sym_flags. */
3115 section = obj_datasec (abfd);
3116 value -= bfd_get_section_vma (abfd, section);
3117 break;
3118 case N_BSS | N_EXT:
3119 section = obj_bsssec (abfd);
3120 value -= bfd_get_section_vma (abfd, section);
3121 break;
3122 case N_INDR | N_EXT:
3123 /* An indirect symbol. The next symbol is the symbol
3124 which this one really is. */
39d4daf6
NC		 3125 /* See PR 20925 for a reproducer. */
3126 if (p + 1 >= pend)
3127 return FALSE;
252b5132 3128 ++p;
e517df3d 3129 /* PR 19629: Corrupt binaries can contain illegal string offsets. */
daae68f4 3130 if (GET_WORD (abfd, p->e_strx) >= obj_aout_external_string_size (abfd))
e517df3d 3131 return FALSE;
252b5132
RH		 3132 string = strings + GET_WORD (abfd, p->e_strx);
3133 section = bfd_ind_section_ptr;
3134 flags |= BSF_INDIRECT;
3135 break;
3136 case N_COMM | N_EXT:
3137 section = bfd_com_section_ptr;
3138 break;
3139 case N_SETA: case N_SETA | N_EXT:
3140 section = bfd_abs_section_ptr;
3141 flags |= BSF_CONSTRUCTOR;
3142 break;
3143 case N_SETT: case N_SETT | N_EXT:
3144 section = obj_textsec (abfd);
3145 flags |= BSF_CONSTRUCTOR;
3146 value -= bfd_get_section_vma (abfd, section);
3147 break;
3148 case N_SETD: case N_SETD | N_EXT:
3149 section = obj_datasec (abfd);
3150 flags |= BSF_CONSTRUCTOR;
3151 value -= bfd_get_section_vma (abfd, section);
3152 break;
3153 case N_SETB: case N_SETB | N_EXT:
3154 section = obj_bsssec (abfd);
3155 flags |= BSF_CONSTRUCTOR;
3156 value -= bfd_get_section_vma (abfd, section);
3157 break;
3158 case N_WARNING:
3159 /* A warning symbol. The next symbol is the one to warn
9f400ee9
HPN		 3160 about. If there is no next symbol, just look away. */
3161 if (p + 1 >= pend)
3162 return TRUE;
252b5132
RH		 3163 ++p;
3164 string = name;
e517df3d 3165 /* PR 19629: Corrupt binaries can contain illegal string offsets. */
daae68f4 3166 if (GET_WORD (abfd, p->e_strx) >= obj_aout_external_string_size (abfd))
e517df3d 3167 return FALSE;
252b5132
RH		 3168 name = strings + GET_WORD (abfd, p->e_strx);
3169 section = bfd_und_section_ptr;
3170 flags |= BSF_WARNING;
3171 break;
3172 case N_WEAKU:
3173 section = bfd_und_section_ptr;
3174 flags = BSF_WEAK;
3175 break;
3176 case N_WEAKA:
3177 section = bfd_abs_section_ptr;
3178 flags = BSF_WEAK;
3179 break;
3180 case N_WEAKT:
3181 section = obj_textsec (abfd);
3182 value -= bfd_get_section_vma (abfd, section);
3183 flags = BSF_WEAK;
3184 break;
3185 case N_WEAKD:
3186 section = obj_datasec (abfd);
3187 value -= bfd_get_section_vma (abfd, section);
3188 flags = BSF_WEAK;
3189 break;
3190 case N_WEAKB:
3191 section = obj_bsssec (abfd);
3192 value -= bfd_get_section_vma (abfd, section);
3193 flags = BSF_WEAK;
3194 break;
3195 }
3196
3197 if (! ((*add_one_symbol)
b34976b6 3198 (info, abfd, name, flags, section, value, string, copy, FALSE,
252b5132 3199 (struct bfd_link_hash_entry **) sym_hash)))
b34976b6 3200 return FALSE;
252b5132
RH		 3201
3202 /* Restrict the maximum alignment of a common symbol based on
3203 the architecture, since a.out has no way to represent
3204 alignment requirements of a section in a .o file. FIXME:
3205 This isn't quite right: it should use the architecture of the
3206 output file, not the input files. */
3207 if ((*sym_hash)->root.type == bfd_link_hash_common
3208 && ((*sym_hash)->root.u.c.p->alignment_power >
3209 bfd_get_arch_info (abfd)->section_align_power))
3210 (*sym_hash)->root.u.c.p->alignment_power =
3211 bfd_get_arch_info (abfd)->section_align_power;
3212
3213 /* If this is a set symbol, and we are not building sets, then
3214 it is possible for the hash entry to not have been set. In
3215 such a case, treat the symbol as not globally defined. */
3216 if ((*sym_hash)->root.type == bfd_link_hash_new)
3217 {
3218 BFD_ASSERT ((flags & BSF_CONSTRUCTOR) != 0);
3219 *sym_hash = NULL;
3220 }
3221
3222 if (type == (N_INDR | N_EXT) || type == N_WARNING)
3223 ++sym_hash;
3224 }
3225
b34976b6 3226 return TRUE;
252b5132 3227}
252b5132 3228
116c20d2
NC		 3229/* Free up the internal symbols read from an a.out file. */
3230
3231static bfd_boolean
3232aout_link_free_symbols (bfd *abfd)
252b5132 3233{
116c20d2
NC		 3234 if (obj_aout_external_syms (abfd) != NULL)
3235 {
3236#ifdef USE_MMAP
3237 bfd_free_window (&obj_aout_sym_window (abfd));
3238#else
3239 free ((void *) obj_aout_external_syms (abfd));
3240#endif
3241 obj_aout_external_syms (abfd) = NULL;
3242 }
3243 if (obj_aout_external_strings (abfd) != NULL)
3244 {
3245#ifdef USE_MMAP
3246 bfd_free_window (&obj_aout_string_window (abfd));
3247#else
3248 free ((void *) obj_aout_external_strings (abfd));
3249#endif
3250 obj_aout_external_strings (abfd) = NULL;
3251 }
3252 return TRUE;
3253}
252b5132 3254
116c20d2 3255/* Add symbols from an a.out object file. */
252b5132 3256
116c20d2
NC		 3257static bfd_boolean
3258aout_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info)
252b5132 3259{
116c20d2
NC		 3260 if (! aout_get_external_symbols (abfd))
3261 return FALSE;
3262 if (! aout_link_add_symbols (abfd, info))
3263 return FALSE;
3264 if (! info->keep_memory)
3265 {
3266 if (! aout_link_free_symbols (abfd))
3267 return FALSE;
3268 }
3269 return TRUE;
3270}
252b5132 3271
116c20d2
NC		 3272/* Look through the internal symbols to see if this object file should
3273 be included in the link. We should include this object file if it
3274 defines any symbols which are currently undefined. If this object
3275 file defines a common symbol, then we may adjust the size of the
3276 known symbol but we do not include the object file in the link
3277 (unless there is some other reason to include it). */
252b5132 3278
116c20d2
NC		 3279static bfd_boolean
3280aout_link_check_ar_symbols (bfd *abfd,
3281 struct bfd_link_info *info,
5d3236ee
DK		 3282 bfd_boolean *pneeded,
3283 bfd **subsbfd)
252b5132 3284{
116c20d2
NC		 3285 struct external_nlist *p;
3286 struct external_nlist *pend;
3287 char *strings;
252b5132 3288
116c20d2 3289 *pneeded = FALSE;
252b5132 3290
116c20d2
NC		 3291 /* Look through all the symbols. */
3292 p = obj_aout_external_syms (abfd);
3293 pend = p + obj_aout_external_sym_count (abfd);
3294 strings = obj_aout_external_strings (abfd);
3295 for (; p < pend; p++)
3296 {
3297 int type = H_GET_8 (abfd, p->e_type);
3298 const char *name;
3299 struct bfd_link_hash_entry *h;
252b5132 3300
116c20d2
NC		 3301 /* Ignore symbols that are not externally visible. This is an
3302 optimization only, as we check the type more thoroughly
3303 below. */
3304 if (((type & N_EXT) == 0
3305 || (type & N_STAB) != 0
3306 || type == N_FN)
3307 && type != N_WEAKA
3308 && type != N_WEAKT
3309 && type != N_WEAKD
3310 && type != N_WEAKB)
3311 {
3312 if (type == N_WARNING
3313 || type == N_INDR)
3314 ++p;
3315 continue;
3316 }
3317
3318 name = strings + GET_WORD (abfd, p->e_strx);
3319 h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE);
3320
3321 /* We are only interested in symbols that are currently
3322 undefined or common. */
3323 if (h == NULL
3324 || (h->type != bfd_link_hash_undefined
3325 && h->type != bfd_link_hash_common))
3326 {
3327 if (type == (N_INDR | N_EXT))
3328 ++p;
3329 continue;
3330 }
3331
3332 if (type == (N_TEXT | N_EXT)
3333 || type == (N_DATA | N_EXT)
3334 || type == (N_BSS | N_EXT)
3335 || type == (N_ABS | N_EXT)
3336 || type == (N_INDR | N_EXT))
3337 {
3338 /* This object file defines this symbol. We must link it
3339 in. This is true regardless of whether the current
3340 definition of the symbol is undefined or common.
3341
07d6d2b8 3342 If the current definition is common, we have a case in
116c20d2 3343 which we have already seen an object file including:
07d6d2b8 3344 int a;
116c20d2 3345 and this object file from the archive includes:
07d6d2b8 3346 int a = 5;
116c20d2 3347 In such a case, whether to include this object is target
07d6d2b8 3348 dependant for backward compatibility.
116c20d2
NC		 3349
3350 FIXME: The SunOS 4.1.3 linker will pull in the archive
3351 element if the symbol is defined in the .data section,
3352 but not if it is defined in the .text section. That
3353 seems a bit crazy to me, and it has not been implemented
3354 yet. However, it might be correct. */
3355 if (h->type == bfd_link_hash_common)
3356 {
3357 int skip = 0;
3358
f88dc410 3359 switch (info->common_skip_ar_symbols)
116c20d2 3360 {
a78eea16
AM		 3361 case bfd_link_common_skip_none:
3362 break;
116c20d2
NC		 3363 case bfd_link_common_skip_text:
3364 skip = (type == (N_TEXT | N_EXT));
3365 break;
3366 case bfd_link_common_skip_data:
3367 skip = (type == (N_DATA | N_EXT));
3368 break;
116c20d2
NC		 3369 case bfd_link_common_skip_all:
3370 skip = 1;
3371 break;
3372 }
3373
3374 if (skip)
3375 continue;
3376 }
3377
0e144ba7
AM		 3378 if (!(*info->callbacks
3379 ->add_archive_element) (info, abfd, name, subsbfd))
116c20d2
NC		 3380 return FALSE;
3381 *pneeded = TRUE;
3382 return TRUE;
3383 }
3384
3385 if (type == (N_UNDF | N_EXT))
3386 {
3387 bfd_vma value;
3388
3389 value = GET_WORD (abfd, p->e_value);
3390 if (value != 0)
3391 {
3392 /* This symbol is common in the object from the archive
3393 file. */
3394 if (h->type == bfd_link_hash_undefined)
3395 {
3396 bfd *symbfd;
3397 unsigned int power;
3398
3399 symbfd = h->u.undef.abfd;
3400 if (symbfd == NULL)
3401 {
3402 /* This symbol was created as undefined from
3403 outside BFD. We assume that we should link
3404 in the object file. This is done for the -u
3405 option in the linker. */
0e144ba7
AM		 3406 if (!(*info->callbacks
3407 ->add_archive_element) (info, abfd, name, subsbfd))
116c20d2
NC		 3408 return FALSE;
3409 *pneeded = TRUE;
3410 return TRUE;
3411 }
3412 /* Turn the current link symbol into a common
3413 symbol. It is already on the undefs list. */
3414 h->type = bfd_link_hash_common;
a50b1753 3415 h->u.c.p = (struct bfd_link_hash_common_entry *)
0e144ba7
AM		 3416 bfd_hash_allocate (&info->hash->table,
3417 sizeof (struct bfd_link_hash_common_entry));
116c20d2
NC		 3418 if (h->u.c.p == NULL)
3419 return FALSE;
3420
3421 h->u.c.size = value;
3422
3423 /* FIXME: This isn't quite right. The maximum
3424 alignment of a common symbol should be set by the
3425 architecture of the output file, not of the input
3426 file. */
3427 power = bfd_log2 (value);
3428 if (power > bfd_get_arch_info (abfd)->section_align_power)
3429 power = bfd_get_arch_info (abfd)->section_align_power;
3430 h->u.c.p->alignment_power = power;
3431
3432 h->u.c.p->section = bfd_make_section_old_way (symbfd,
3433 "COMMON");
3434 }
3435 else
3436 {
3437 /* Adjust the size of the common symbol if
3438 necessary. */
3439 if (value > h->u.c.size)
3440 h->u.c.size = value;
3441 }
3442 }
3443 }
3444
3445 if (type == N_WEAKA
3446 || type == N_WEAKT
3447 || type == N_WEAKD
3448 || type == N_WEAKB)
3449 {
3450 /* This symbol is weak but defined. We must pull it in if
3451 the current link symbol is undefined, but we don't want
3452 it if the current link symbol is common. */
3453 if (h->type == bfd_link_hash_undefined)
3454 {
0e144ba7
AM		 3455 if (!(*info->callbacks
3456 ->add_archive_element) (info, abfd, name, subsbfd))
116c20d2
NC		 3457 return FALSE;
3458 *pneeded = TRUE;
3459 return TRUE;
3460 }
3461 }
3462 }
3463
3464 /* We do not need this object file. */
3465 return TRUE;
3466}
3467/* Check a single archive element to see if we need to include it in
3468 the link. *PNEEDED is set according to whether this element is
3469 needed in the link or not. This is called from
3470 _bfd_generic_link_add_archive_symbols. */
3471
3472static bfd_boolean
3473aout_link_check_archive_element (bfd *abfd,
3474 struct bfd_link_info *info,
13e570f8
AM		 3475 struct bfd_link_hash_entry *h ATTRIBUTE_UNUSED,
3476 const char *name ATTRIBUTE_UNUSED,
116c20d2
NC		 3477 bfd_boolean *pneeded)
3478{
0e144ba7
AM		 3479 bfd *oldbfd;
3480 bfd_boolean needed;
5d3236ee 3481
0e144ba7 3482 if (!aout_get_external_symbols (abfd))
116c20d2
NC		 3483 return FALSE;
3484
0e144ba7
AM		 3485 oldbfd = abfd;
3486 if (!aout_link_check_ar_symbols (abfd, info, pneeded, &abfd))
116c20d2
NC		 3487 return FALSE;
3488
0e144ba7
AM		 3489 needed = *pneeded;
3490 if (needed)
116c20d2 3491 {
5d3236ee
DK		 3492 /* Potentially, the add_archive_element hook may have set a
3493 substitute BFD for us. */
0e144ba7
AM		 3494 if (abfd != oldbfd)
3495 {
3496 if (!info->keep_memory
3497 && !aout_link_free_symbols (oldbfd))
3498 return FALSE;
3499 if (!aout_get_external_symbols (abfd))
3500 return FALSE;
3501 }
3502 if (!aout_link_add_symbols (abfd, info))
116c20d2
NC		 3503 return FALSE;
3504 }
3505
0e144ba7 3506 if (!info->keep_memory || !needed)
116c20d2 3507 {
0e144ba7 3508 if (!aout_link_free_symbols (abfd))
116c20d2
NC		 3509 return FALSE;
3510 }
3511
3512 return TRUE;
3513}
3514
3515/* Given an a.out BFD, add symbols to the global hash table as
3516 appropriate. */
3517
3518bfd_boolean
3519NAME (aout, link_add_symbols) (bfd *abfd, struct bfd_link_info *info)
3520{
3521 switch (bfd_get_format (abfd))
3522 {
3523 case bfd_object:
3524 return aout_link_add_object_symbols (abfd, info);
3525 case bfd_archive:
3526 return _bfd_generic_link_add_archive_symbols
3527 (abfd, info, aout_link_check_archive_element);
3528 default:
3529 bfd_set_error (bfd_error_wrong_format);
3530 return FALSE;
3531 }
3532}
3533\f
3534/* A hash table used for header files with N_BINCL entries. */
3535
3536struct aout_link_includes_table
3537{
3538 struct bfd_hash_table root;
3539};
3540
3541/* A linked list of totals that we have found for a particular header
3542 file. */
3543
3544struct aout_link_includes_totals
3545{
3546 struct aout_link_includes_totals *next;
3547 bfd_vma total;
3548};
3549
3550/* An entry in the header file hash table. */
3551
3552struct aout_link_includes_entry
3553{
3554 struct bfd_hash_entry root;
3555 /* List of totals we have found for this file. */
3556 struct aout_link_includes_totals *totals;
3557};
3558
3559/* Look up an entry in an the header file hash table. */
3560
3561#define aout_link_includes_lookup(table, string, create, copy) \
3562 ((struct aout_link_includes_entry *) \
3563 bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
3564
3565/* During the final link step we need to pass around a bunch of
3566 information, so we do it in an instance of this structure. */
3567
3568struct aout_final_link_info
3569{
3570 /* General link information. */
3571 struct bfd_link_info *info;
3572 /* Output bfd. */
252b5132
RH		 3573 bfd *output_bfd;
3574 /* Reloc file positions. */
3575 file_ptr treloff, dreloff;
3576 /* File position of symbols. */
3577 file_ptr symoff;
3578 /* String table. */
3579 struct bfd_strtab_hash *strtab;
3580 /* Header file hash table. */
3581 struct aout_link_includes_table includes;
3582 /* A buffer large enough to hold the contents of any section. */
3583 bfd_byte *contents;
3584 /* A buffer large enough to hold the relocs of any section. */
116c20d2 3585 void * relocs;
252b5132
RH		 3586 /* A buffer large enough to hold the symbol map of any input BFD. */
3587 int *symbol_map;
3588 /* A buffer large enough to hold output symbols of any input BFD. */
3589 struct external_nlist *output_syms;
3590};
3591
252b5132
RH		 3592/* The function to create a new entry in the header file hash table. */
3593
3594static struct bfd_hash_entry *
116c20d2
NC		 3595aout_link_includes_newfunc (struct bfd_hash_entry *entry,
3596 struct bfd_hash_table *table,
3597 const char *string)
252b5132
RH		 3598{
3599 struct aout_link_includes_entry *ret =
3600 (struct aout_link_includes_entry *) entry;
3601
3602 /* Allocate the structure if it has not already been allocated by a
3603 subclass. */
116c20d2 3604 if (ret == NULL)
a50b1753 3605 ret = (struct aout_link_includes_entry *)
07d6d2b8 3606 bfd_hash_allocate (table, sizeof (* ret));
116c20d2
NC		 3607 if (ret == NULL)
3608 return NULL;
252b5132
RH		 3609
3610 /* Call the allocation method of the superclass. */
3611 ret = ((struct aout_link_includes_entry *)
3612 bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string));
3613 if (ret)
3614 {
3615 /* Set local fields. */
3616 ret->totals = NULL;
3617 }
3618
3619 return (struct bfd_hash_entry *) ret;
3620}
3621
116c20d2
NC		 3622/* Write out a symbol that was not associated with an a.out input
3623 object. */
252b5132 3624
116c20d2 3625static bfd_boolean
7686d77d 3626aout_link_write_other_symbol (struct bfd_hash_entry *bh, void *data)
252b5132 3627{
7686d77d 3628 struct aout_link_hash_entry *h = (struct aout_link_hash_entry *) bh;
57402f1e 3629 struct aout_final_link_info *flaginfo = (struct aout_final_link_info *) data;
116c20d2
NC		 3630 bfd *output_bfd;
3631 int type;
3632 bfd_vma val;
3633 struct external_nlist outsym;
3634 bfd_size_type indx;
3635 bfd_size_type amt;
252b5132 3636
116c20d2
NC		 3637 if (h->root.type == bfd_link_hash_warning)
3638 {
3639 h = (struct aout_link_hash_entry *) h->root.u.i.link;
3640 if (h->root.type == bfd_link_hash_new)
3641 return TRUE;
3642 }
252b5132 3643
57402f1e 3644 output_bfd = flaginfo->output_bfd;
252b5132 3645
116c20d2 3646 if (aout_backend_info (output_bfd)->write_dynamic_symbol != NULL)
252b5132 3647 {
116c20d2 3648 if (! ((*aout_backend_info (output_bfd)->write_dynamic_symbol)
57402f1e 3649 (output_bfd, flaginfo->info, h)))
252b5132 3650 {
116c20d2
NC		 3651 /* FIXME: No way to handle errors. */
3652 abort ();
252b5132 3653 }
116c20d2 3654 }
252b5132 3655
116c20d2
NC		 3656 if (h->written)
3657 return TRUE;
252b5132 3658
116c20d2 3659 h->written = TRUE;
252b5132 3660
116c20d2
NC		 3661 /* An indx of -2 means the symbol must be written. */
3662 if (h->indx != -2
57402f1e
NC		 3663 && (flaginfo->info->strip == strip_all
3664 || (flaginfo->info->strip == strip_some
3665 && bfd_hash_lookup (flaginfo->info->keep_hash, h->root.root.string,
116c20d2
NC		 3666 FALSE, FALSE) == NULL)))
3667 return TRUE;
252b5132 3668
116c20d2 3669 switch (h->root.type)
252b5132 3670 {
116c20d2
NC		 3671 default:
3672 case bfd_link_hash_warning:
3673 abort ();
3674 /* Avoid variable not initialized warnings. */
3675 return TRUE;
3676 case bfd_link_hash_new:
3677 /* This can happen for set symbols when sets are not being
07d6d2b8 3678 built. */
116c20d2
NC		 3679 return TRUE;
3680 case bfd_link_hash_undefined:
3681 type = N_UNDF | N_EXT;
3682 val = 0;
3683 break;
3684 case bfd_link_hash_defined:
3685 case bfd_link_hash_defweak:
3686 {
3687 asection *sec;
252b5132 3688
116c20d2
NC		 3689 sec = h->root.u.def.section->output_section;
3690 BFD_ASSERT (bfd_is_abs_section (sec)
3691 || sec->owner == output_bfd);
3692 if (sec == obj_textsec (output_bfd))
3693 type = h->root.type == bfd_link_hash_defined ? N_TEXT : N_WEAKT;
3694 else if (sec == obj_datasec (output_bfd))
3695 type = h->root.type == bfd_link_hash_defined ? N_DATA : N_WEAKD;
3696 else if (sec == obj_bsssec (output_bfd))
3697 type = h->root.type == bfd_link_hash_defined ? N_BSS : N_WEAKB;
3698 else
3699 type = h->root.type == bfd_link_hash_defined ? N_ABS : N_WEAKA;
3700 type |= N_EXT;
3701 val = (h->root.u.def.value
3702 + sec->vma
3703 + h->root.u.def.section->output_offset);
3704 }
3705 break;
3706 case bfd_link_hash_common:
3707 type = N_UNDF | N_EXT;
3708 val = h->root.u.c.size;
3709 break;
3710 case bfd_link_hash_undefweak:
3711 type = N_WEAKU;
3712 val = 0;
c38eb2a6 3713 break;
116c20d2
NC		 3714 case bfd_link_hash_indirect:
3715 /* We ignore these symbols, since the indirected symbol is
3716 already in the hash table. */
3717 return TRUE;
3718 }
252b5132 3719
116c20d2
NC		 3720 H_PUT_8 (output_bfd, type, outsym.e_type);
3721 H_PUT_8 (output_bfd, 0, outsym.e_other);
3722 H_PUT_16 (output_bfd, 0, outsym.e_desc);
57402f1e 3723 indx = add_to_stringtab (output_bfd, flaginfo->strtab, h->root.root.string,
116c20d2
NC		 3724 FALSE);
3725 if (indx == - (bfd_size_type) 1)
3726 /* FIXME: No way to handle errors. */
3727 abort ();
252b5132 3728
116c20d2
NC		 3729 PUT_WORD (output_bfd, indx, outsym.e_strx);
3730 PUT_WORD (output_bfd, val, outsym.e_value);
252b5132 3731
116c20d2 3732 amt = EXTERNAL_NLIST_SIZE;
57402f1e 3733 if (bfd_seek (output_bfd, flaginfo->symoff, SEEK_SET) != 0
116c20d2
NC		 3734 || bfd_bwrite ((void *) &outsym, amt, output_bfd) != amt)
3735 /* FIXME: No way to handle errors. */
3736 abort ();
252b5132 3737
57402f1e 3738 flaginfo->symoff += EXTERNAL_NLIST_SIZE;
116c20d2
NC		 3739 h->indx = obj_aout_external_sym_count (output_bfd);
3740 ++obj_aout_external_sym_count (output_bfd);
252b5132 3741
116c20d2
NC		 3742 return TRUE;
3743}
252b5132 3744
116c20d2 3745/* Handle a link order which is supposed to generate a reloc. */
252b5132 3746
116c20d2 3747static bfd_boolean
57402f1e 3748aout_link_reloc_link_order (struct aout_final_link_info *flaginfo,
116c20d2
NC		 3749 asection *o,
3750 struct bfd_link_order *p)
3751{
3752 struct bfd_link_order_reloc *pr;
3753 int r_index;
3754 int r_extern;
3755 reloc_howto_type *howto;
3756 file_ptr *reloff_ptr = NULL;
3757 struct reloc_std_external srel;
3758 struct reloc_ext_external erel;
3759 void * rel_ptr;
3760 bfd_size_type amt;
252b5132 3761
116c20d2 3762 pr = p->u.reloc.p;
252b5132 3763
116c20d2
NC		 3764 if (p->type == bfd_section_reloc_link_order)
3765 {
3766 r_extern = 0;
3767 if (bfd_is_abs_section (pr->u.section))
3768 r_index = N_ABS | N_EXT;
3769 else
3770 {
57402f1e 3771 BFD_ASSERT (pr->u.section->owner == flaginfo->output_bfd);
116c20d2
NC		 3772 r_index = pr->u.section->target_index;
3773 }
3774 }
3775 else
3776 {
3777 struct aout_link_hash_entry *h;
252b5132 3778
116c20d2
NC		 3779 BFD_ASSERT (p->type == bfd_symbol_reloc_link_order);
3780 r_extern = 1;
3781 h = ((struct aout_link_hash_entry *)
57402f1e 3782 bfd_wrapped_link_hash_lookup (flaginfo->output_bfd, flaginfo->info,
116c20d2
NC		 3783 pr->u.name, FALSE, FALSE, TRUE));
3784 if (h != NULL
3785 && h->indx >= 0)
3786 r_index = h->indx;
3787 else if (h != NULL)
3788 {
3789 /* We decided to strip this symbol, but it turns out that we
3790 can't. Note that we lose the other and desc information
3791 here. I don't think that will ever matter for a global
3792 symbol. */
3793 h->indx = -2;
3794 h->written = FALSE;
57402f1e 3795 if (!aout_link_write_other_symbol (&h->root.root, flaginfo))
116c20d2
NC		 3796 return FALSE;
3797 r_index = h->indx;
3798 }
3799 else
3800 {
1a72702b
AM		 3801 (*flaginfo->info->callbacks->unattached_reloc)
3802 (flaginfo->info, pr->u.name, NULL, NULL, (bfd_vma) 0);
116c20d2
NC		 3803 r_index = 0;
3804 }
3805 }
252b5132 3806
57402f1e 3807 howto = bfd_reloc_type_lookup (flaginfo->output_bfd, pr->reloc);
116c20d2 3808 if (howto == 0)
252b5132 3809 {
116c20d2
NC		 3810 bfd_set_error (bfd_error_bad_value);
3811 return FALSE;
252b5132
RH		 3812 }
3813
57402f1e
NC		 3814 if (o == obj_textsec (flaginfo->output_bfd))
3815 reloff_ptr = &flaginfo->treloff;
3816 else if (o == obj_datasec (flaginfo->output_bfd))
3817 reloff_ptr = &flaginfo->dreloff;
116c20d2
NC		 3818 else
3819 abort ();
3820
57402f1e 3821 if (obj_reloc_entry_size (flaginfo->output_bfd) == RELOC_STD_SIZE)
252b5132 3822 {
116c20d2 3823#ifdef MY_put_reloc
57402f1e 3824 MY_put_reloc (flaginfo->output_bfd, r_extern, r_index, p->offset, howto,
116c20d2
NC		 3825 &srel);
3826#else
3827 {
3828 int r_pcrel;
3829 int r_baserel;
3830 int r_jmptable;
3831 int r_relative;
3832 int r_length;
252b5132 3833
116c20d2
NC		 3834 r_pcrel = (int) howto->pc_relative;
3835 r_baserel = (howto->type & 8) != 0;
3836 r_jmptable = (howto->type & 16) != 0;
3837 r_relative = (howto->type & 32) != 0;
3838 r_length = howto->size;
252b5132 3839
57402f1e
NC		 3840 PUT_WORD (flaginfo->output_bfd, p->offset, srel.r_address);
3841 if (bfd_header_big_endian (flaginfo->output_bfd))
116c20d2
NC		 3842 {
3843 srel.r_index[0] = r_index >> 16;
3844 srel.r_index[1] = r_index >> 8;
3845 srel.r_index[2] = r_index;
3846 srel.r_type[0] =
3847 ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0)
3848 | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0)
3849 | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0)
3850 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0)
3851 | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0)
3852 | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG));
3853 }
3854 else
3855 {
3856 srel.r_index[2] = r_index >> 16;
3857 srel.r_index[1] = r_index >> 8;
3858 srel.r_index[0] = r_index;
3859 srel.r_type[0] =
3860 ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0)
3861 | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0)
3862 | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0)
3863 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0)
3864 | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0)
3865 | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE));
3866 }
3867 }
3868#endif
3869 rel_ptr = (void *) &srel;
252b5132 3870
116c20d2
NC		 3871 /* We have to write the addend into the object file, since
3872 standard a.out relocs are in place. It would be more
3873 reliable if we had the current contents of the file here,
3874 rather than assuming zeroes, but we can't read the file since
3875 it was opened using bfd_openw. */
3876 if (pr->addend != 0)
252b5132 3877 {
116c20d2
NC		 3878 bfd_size_type size;
3879 bfd_reloc_status_type r;
3880 bfd_byte *buf;
3881 bfd_boolean ok;
3882
3883 size = bfd_get_reloc_size (howto);
a50b1753 3884 buf = (bfd_byte *) bfd_zmalloc (size);
6346d5ca 3885 if (buf == NULL && size != 0)
116c20d2 3886 return FALSE;
57402f1e 3887 r = MY_relocate_contents (howto, flaginfo->output_bfd,
116c20d2
NC		 3888 (bfd_vma) pr->addend, buf);
3889 switch (r)
252b5132 3890 {
116c20d2
NC		 3891 case bfd_reloc_ok:
3892 break;
3893 default:
3894 case bfd_reloc_outofrange:
3895 abort ();
3896 case bfd_reloc_overflow:
1a72702b
AM		 3897 (*flaginfo->info->callbacks->reloc_overflow)
3898 (flaginfo->info, NULL,
3899 (p->type == bfd_section_reloc_link_order
3900 ? bfd_section_name (flaginfo->output_bfd,
3901 pr->u.section)
3902 : pr->u.name),
3903 howto->name, pr->addend, NULL, NULL, (bfd_vma) 0);
116c20d2 3904 break;
252b5132 3905 }
57402f1e 3906 ok = bfd_set_section_contents (flaginfo->output_bfd, o, (void *) buf,
116c20d2
NC		 3907 (file_ptr) p->offset, size);
3908 free (buf);
3909 if (! ok)
3910 return FALSE;
252b5132
RH		 3911 }
3912 }
116c20d2 3913 else
252b5132 3914 {
116c20d2 3915#ifdef MY_put_ext_reloc
57402f1e 3916 MY_put_ext_reloc (flaginfo->output_bfd, r_extern, r_index, p->offset,
116c20d2
NC		 3917 howto, &erel, pr->addend);
3918#else
57402f1e 3919 PUT_WORD (flaginfo->output_bfd, p->offset, erel.r_address);
252b5132 3920
57402f1e 3921 if (bfd_header_big_endian (flaginfo->output_bfd))
116c20d2
NC		 3922 {
3923 erel.r_index[0] = r_index >> 16;
3924 erel.r_index[1] = r_index >> 8;
3925 erel.r_index[2] = r_index;
3926 erel.r_type[0] =
3927 ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0)
3928 | (howto->type << RELOC_EXT_BITS_TYPE_SH_BIG));
3929 }
3930 else
3931 {
3932 erel.r_index[2] = r_index >> 16;
3933 erel.r_index[1] = r_index >> 8;
3934 erel.r_index[0] = r_index;
3935 erel.r_type[0] =
3936 (r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0)
3937 | (howto->type << RELOC_EXT_BITS_TYPE_SH_LITTLE);
3938 }
252b5132 3939
57402f1e 3940 PUT_WORD (flaginfo->output_bfd, (bfd_vma) pr->addend, erel.r_addend);
116c20d2 3941#endif /* MY_put_ext_reloc */
252b5132 3942
116c20d2 3943 rel_ptr = (void *) &erel;
252b5132 3944 }
252b5132 3945
57402f1e
NC		 3946 amt = obj_reloc_entry_size (flaginfo->output_bfd);
3947 if (bfd_seek (flaginfo->output_bfd, *reloff_ptr, SEEK_SET) != 0
3948 || bfd_bwrite (rel_ptr, amt, flaginfo->output_bfd) != amt)
116c20d2 3949 return FALSE;
252b5132 3950
57402f1e 3951 *reloff_ptr += obj_reloc_entry_size (flaginfo->output_bfd);
252b5132 3952
116c20d2
NC		 3953 /* Assert that the relocs have not run into the symbols, and that n
3954 the text relocs have not run into the data relocs. */
57402f1e
NC		 3955 BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (flaginfo->output_bfd)
3956 && (reloff_ptr != &flaginfo->treloff
116c20d2 3957 || (*reloff_ptr
57402f1e 3958 <= obj_datasec (flaginfo->output_bfd)->rel_filepos)));
116c20d2
NC		 3959
3960 return TRUE;
252b5132
RH		 3961}
3962
116c20d2 3963/* Get the section corresponding to a reloc index. */
252b5132 3964
116c20d2
NC		 3965static INLINE asection *
3966aout_reloc_index_to_section (bfd *abfd, int indx)
252b5132 3967{
116c20d2 3968 switch (indx & N_TYPE)
252b5132 3969 {
116c20d2
NC		 3970 case N_TEXT: return obj_textsec (abfd);
3971 case N_DATA: return obj_datasec (abfd);
3972 case N_BSS: return obj_bsssec (abfd);
3973 case N_ABS:
3974 case N_UNDF: return bfd_abs_section_ptr;
3975 default: abort ();
252b5132 3976 }
116c20d2 3977 return NULL;
252b5132
RH		 3978}
3979
116c20d2 3980/* Relocate an a.out section using standard a.out relocs. */
252b5132 3981
b34976b6 3982static bfd_boolean
57402f1e 3983aout_link_input_section_std (struct aout_final_link_info *flaginfo,
116c20d2
NC		 3984 bfd *input_bfd,
3985 asection *input_section,
3986 struct reloc_std_external *relocs,
3987 bfd_size_type rel_size,
3988 bfd_byte *contents)
252b5132 3989{
116c20d2
NC		 3990 bfd_boolean (*check_dynamic_reloc)
3991 (struct bfd_link_info *, bfd *, asection *,
3992 struct aout_link_hash_entry *, void *, bfd_byte *, bfd_boolean *,
3993 bfd_vma *);
252b5132 3994 bfd *output_bfd;
116c20d2
NC		 3995 bfd_boolean relocatable;
3996 struct external_nlist *syms;
252b5132 3997 char *strings;
116c20d2 3998 struct aout_link_hash_entry **sym_hashes;
252b5132 3999 int *symbol_map;
116c20d2
NC		 4000 bfd_size_type reloc_count;
4001 struct reloc_std_external *rel;
4002 struct reloc_std_external *rel_end;
252b5132 4003
57402f1e 4004 output_bfd = flaginfo->output_bfd;
116c20d2 4005 check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc;
252b5132 4006
116c20d2
NC		 4007 BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE);
4008 BFD_ASSERT (input_bfd->xvec->header_byteorder
4009 == output_bfd->xvec->header_byteorder);
252b5132 4010
0e1862bb 4011 relocatable = bfd_link_relocatable (flaginfo->info);
116c20d2
NC		 4012 syms = obj_aout_external_syms (input_bfd);
4013 strings = obj_aout_external_strings (input_bfd);
4014 sym_hashes = obj_aout_sym_hashes (input_bfd);
57402f1e 4015 symbol_map = flaginfo->symbol_map;
116c20d2
NC		 4016
4017 reloc_count = rel_size / RELOC_STD_SIZE;
4018 rel = relocs;
4019 rel_end = rel + reloc_count;
4020 for (; rel < rel_end; rel++)
252b5132 4021 {
116c20d2
NC		 4022 bfd_vma r_addr;
4023 int r_index;
4024 int r_extern;
4025 int r_pcrel;
4026 int r_baserel = 0;
4027 reloc_howto_type *howto;
4028 struct aout_link_hash_entry *h = NULL;
4029 bfd_vma relocation;
4030 bfd_reloc_status_type r;
252b5132 4031
116c20d2 4032 r_addr = GET_SWORD (input_bfd, rel->r_address);
252b5132 4033
116c20d2
NC		 4034#ifdef MY_reloc_howto
4035 howto = MY_reloc_howto (input_bfd, rel, r_index, r_extern, r_pcrel);
4036#else
4037 {
4038 int r_jmptable;
4039 int r_relative;
4040 int r_length;
4041 unsigned int howto_idx;
252b5132 4042
116c20d2
NC		 4043 if (bfd_header_big_endian (input_bfd))
4044 {
4045 r_index = (((unsigned int) rel->r_index[0] << 16)
4046 | ((unsigned int) rel->r_index[1] << 8)
4047 | rel->r_index[2]);
4048 r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
4049 r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
4050 r_baserel = (0 != (rel->r_type[0] & RELOC_STD_BITS_BASEREL_BIG));
4051 r_jmptable= (0 != (rel->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG));
4052 r_relative= (0 != (rel->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG));
4053 r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_BIG)
4054 >> RELOC_STD_BITS_LENGTH_SH_BIG);
4055 }
4056 else
4057 {
4058 r_index = (((unsigned int) rel->r_index[2] << 16)
4059 | ((unsigned int) rel->r_index[1] << 8)
4060 | rel->r_index[0]);
4061 r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
4062 r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
4063 r_baserel = (0 != (rel->r_type[0]
4064 & RELOC_STD_BITS_BASEREL_LITTLE));
4065 r_jmptable= (0 != (rel->r_type[0]
4066 & RELOC_STD_BITS_JMPTABLE_LITTLE));
4067 r_relative= (0 != (rel->r_type[0]
4068 & RELOC_STD_BITS_RELATIVE_LITTLE));
4069 r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE)
4070 >> RELOC_STD_BITS_LENGTH_SH_LITTLE);
4071 }
252b5132 4072
116c20d2
NC		 4073 howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel
4074 + 16 * r_jmptable + 32 * r_relative);
ad756e3f
AM		 4075 if (howto_idx < TABLE_SIZE (howto_table_std))
4076 howto = howto_table_std + howto_idx;
4077 else
4078 howto = NULL;
116c20d2
NC		 4079 }
4080#endif
252b5132 4081
ad756e3f
AM		 4082 if (howto == NULL)
4083 {
0aa13fee
AM		 4084 _bfd_error_handler (_("%pB: unsupported relocation type"),
4085 input_bfd);
ad756e3f
AM		 4086 bfd_set_error (bfd_error_bad_value);
4087 return FALSE;
4088 }
4089
116c20d2 4090 if (relocatable)
252b5132 4091 {
116c20d2
NC		 4092 /* We are generating a relocatable output file, and must
4093 modify the reloc accordingly. */
4094 if (r_extern)
252b5132 4095 {
116c20d2
NC		 4096 /* If we know the symbol this relocation is against,
4097 convert it into a relocation against a section. This
4098 is what the native linker does. */
4099 h = sym_hashes[r_index];
4100 if (h != NULL
4101 && (h->root.type == bfd_link_hash_defined
4102 || h->root.type == bfd_link_hash_defweak))
252b5132 4103 {
252b5132
RH		 4104 asection *output_section;
4105
116c20d2
NC		 4106 /* Change the r_extern value. */
4107 if (bfd_header_big_endian (output_bfd))
4108 rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_BIG;
4109 else
4110 rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_LITTLE;
252b5132 4111
116c20d2
NC		 4112 /* Compute a new r_index. */
4113 output_section = h->root.u.def.section->output_section;
252b5132 4114 if (output_section == obj_textsec (output_bfd))
116c20d2 4115 r_index = N_TEXT;
252b5132 4116 else if (output_section == obj_datasec (output_bfd))
116c20d2 4117 r_index = N_DATA;
252b5132 4118 else if (output_section == obj_bsssec (output_bfd))
116c20d2 4119 r_index = N_BSS;
252b5132 4120 else
116c20d2 4121 r_index = N_ABS;
252b5132 4122
116c20d2
NC		 4123 /* Add the symbol value and the section VMA to the
4124 addend stored in the contents. */
4125 relocation = (h->root.u.def.value
4126 + output_section->vma
4127 + h->root.u.def.section->output_offset);
252b5132 4128 }
116c20d2 4129 else
252b5132 4130 {
116c20d2
NC		 4131 /* We must change r_index according to the symbol
4132 map. */
4133 r_index = symbol_map[r_index];
252b5132 4134
116c20d2 4135 if (r_index == -1)
252b5132 4136 {
116c20d2 4137 if (h != NULL)
252b5132 4138 {
116c20d2 4139 /* We decided to strip this symbol, but it
07d6d2b8
AM		 4140 turns out that we can't. Note that we
4141 lose the other and desc information here.
4142 I don't think that will ever matter for a
4143 global symbol. */
116c20d2 4144 if (h->indx < 0)
252b5132 4145 {
116c20d2
NC		 4146 h->indx = -2;
4147 h->written = FALSE;
7686d77d 4148 if (!aout_link_write_other_symbol (&h->root.root,
57402f1e 4149 flaginfo))
116c20d2 4150 return FALSE;
252b5132 4151 }
116c20d2
NC		 4152 r_index = h->indx;
4153 }
4154 else
4155 {
4156 const char *name;
4157
4158 name = strings + GET_WORD (input_bfd,
4159 syms[r_index].e_strx);
1a72702b
AM		 4160 (*flaginfo->info->callbacks->unattached_reloc)
4161 (flaginfo->info, name,
4162 input_bfd, input_section, r_addr);
116c20d2 4163 r_index = 0;
252b5132
RH		 4164 }
4165 }
116c20d2
NC		 4166
4167 relocation = 0;
252b5132
RH		 4168 }
4169
116c20d2
NC		 4170 /* Write out the new r_index value. */
4171 if (bfd_header_big_endian (output_bfd))
252b5132 4172 {
116c20d2
NC		 4173 rel->r_index[0] = r_index >> 16;
4174 rel->r_index[1] = r_index >> 8;
4175 rel->r_index[2] = r_index;
252b5132
RH		 4176 }
4177 else
4178 {
116c20d2
NC		 4179 rel->r_index[2] = r_index >> 16;
4180 rel->r_index[1] = r_index >> 8;
4181 rel->r_index[0] = r_index;
252b5132
RH		 4182 }
4183 }
252b5132 4184 else
116c20d2
NC		 4185 {
4186 asection *section;
252b5132 4187
116c20d2
NC		 4188 /* This is a relocation against a section. We must
4189 adjust by the amount that the section moved. */
4190 section = aout_reloc_index_to_section (input_bfd, r_index);
4191 relocation = (section->output_section->vma
4192 + section->output_offset
4193 - section->vma);
4194 }
252b5132 4195
116c20d2
NC		 4196 /* Change the address of the relocation. */
4197 PUT_WORD (output_bfd,
4198 r_addr + input_section->output_offset,
4199 rel->r_address);
252b5132 4200
116c20d2
NC		 4201 /* Adjust a PC relative relocation by removing the reference
4202 to the original address in the section and including the
4203 reference to the new address. */
4204 if (r_pcrel)
4205 relocation -= (input_section->output_section->vma
4206 + input_section->output_offset
4207 - input_section->vma);
e92d460e 4208
116c20d2
NC		 4209#ifdef MY_relocatable_reloc
4210 MY_relocatable_reloc (howto, output_bfd, rel, relocation, r_addr);
4211#endif
252b5132 4212
116c20d2
NC		 4213 if (relocation == 0)
4214 r = bfd_reloc_ok;
4215 else
4216 r = MY_relocate_contents (howto,
4217 input_bfd, relocation,
4218 contents + r_addr);
252b5132 4219 }
116c20d2
NC		 4220 else
4221 {
4222 bfd_boolean hundef;
252b5132 4223
116c20d2
NC		 4224 /* We are generating an executable, and must do a full
4225 relocation. */
4226 hundef = FALSE;
252b5132 4227
116c20d2
NC		 4228 if (r_extern)
4229 {
4230 h = sym_hashes[r_index];
252b5132 4231
116c20d2
NC		 4232 if (h != NULL
4233 && (h->root.type == bfd_link_hash_defined
4234 || h->root.type == bfd_link_hash_defweak))
4235 {
4236 relocation = (h->root.u.def.value
4237 + h->root.u.def.section->output_section->vma
4238 + h->root.u.def.section->output_offset);
4239 }
4240 else if (h != NULL
4241 && h->root.type == bfd_link_hash_undefweak)
4242 relocation = 0;
4243 else
4244 {
4245 hundef = TRUE;
4246 relocation = 0;
4247 }
4248 }
4249 else
4250 {
4251 asection *section;
252b5132 4252
116c20d2
NC		 4253 section = aout_reloc_index_to_section (input_bfd, r_index);
4254 relocation = (section->output_section->vma
4255 + section->output_offset
4256 - section->vma);
4257 if (r_pcrel)
4258 relocation += input_section->vma;
4259 }
252b5132 4260
116c20d2
NC		 4261 if (check_dynamic_reloc != NULL)
4262 {
4263 bfd_boolean skip;
252b5132 4264
116c20d2 4265 if (! ((*check_dynamic_reloc)
57402f1e 4266 (flaginfo->info, input_bfd, input_section, h,
116c20d2
NC		 4267 (void *) rel, contents, &skip, &relocation)))
4268 return FALSE;
4269 if (skip)
4270 continue;
4271 }
252b5132 4272
116c20d2 4273 /* Now warn if a global symbol is undefined. We could not
07d6d2b8
AM		 4274 do this earlier, because check_dynamic_reloc might want
4275 to skip this reloc. */
0e1862bb 4276 if (hundef && ! bfd_link_pic (flaginfo->info) && ! r_baserel)
116c20d2
NC		 4277 {
4278 const char *name;
252b5132 4279
116c20d2
NC		 4280 if (h != NULL)
4281 name = h->root.root.string;
4282 else
4283 name = strings + GET_WORD (input_bfd, syms[r_index].e_strx);
1a72702b
AM		 4284 (*flaginfo->info->callbacks->undefined_symbol)
4285 (flaginfo->info, name, input_bfd, input_section, r_addr, TRUE);
116c20d2 4286 }
252b5132 4287
116c20d2
NC		 4288 r = MY_final_link_relocate (howto,
4289 input_bfd, input_section,
4290 contents, r_addr, relocation,
4291 (bfd_vma) 0);
252b5132 4292 }
252b5132 4293
116c20d2
NC		 4294 if (r != bfd_reloc_ok)
4295 {
4296 switch (r)
4297 {
4298 default:
4299 case bfd_reloc_outofrange:
4300 abort ();
4301 case bfd_reloc_overflow:
4302 {
4303 const char *name;
252b5132 4304
116c20d2
NC		 4305 if (h != NULL)
4306 name = NULL;
4307 else if (r_extern)
4308 name = strings + GET_WORD (input_bfd,
4309 syms[r_index].e_strx);
4310 else
4311 {
4312 asection *s;
252b5132 4313
116c20d2
NC		 4314 s = aout_reloc_index_to_section (input_bfd, r_index);
4315 name = bfd_section_name (input_bfd, s);
4316 }
1a72702b
AM		 4317 (*flaginfo->info->callbacks->reloc_overflow)
4318 (flaginfo->info, (h ? &h->root : NULL), name, howto->name,
4319 (bfd_vma) 0, input_bfd, input_section, r_addr);
116c20d2
NC		 4320 }
4321 break;
4322 }
4323 }
252b5132
RH		 4324 }
4325
b34976b6 4326 return TRUE;
252b5132
RH		 4327}
4328
116c20d2 4329/* Relocate an a.out section using extended a.out relocs. */
252b5132 4330
b34976b6 4331static bfd_boolean
57402f1e 4332aout_link_input_section_ext (struct aout_final_link_info *flaginfo,
116c20d2
NC		 4333 bfd *input_bfd,
4334 asection *input_section,
4335 struct reloc_ext_external *relocs,
4336 bfd_size_type rel_size,
4337 bfd_byte *contents)
252b5132 4338{
b34976b6 4339 bfd_boolean (*check_dynamic_reloc)
116c20d2
NC		 4340 (struct bfd_link_info *, bfd *, asection *,
4341 struct aout_link_hash_entry *, void *, bfd_byte *, bfd_boolean *,
4342 bfd_vma *);
252b5132 4343 bfd *output_bfd;
1049f94e 4344 bfd_boolean relocatable;
252b5132
RH		 4345 struct external_nlist *syms;
4346 char *strings;
4347 struct aout_link_hash_entry **sym_hashes;
4348 int *symbol_map;
4349 bfd_size_type reloc_count;
116c20d2
NC		 4350 struct reloc_ext_external *rel;
4351 struct reloc_ext_external *rel_end;
252b5132 4352
57402f1e 4353 output_bfd = flaginfo->output_bfd;
252b5132
RH		 4354 check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc;
4355
116c20d2 4356 BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_EXT_SIZE);
252b5132
RH		 4357 BFD_ASSERT (input_bfd->xvec->header_byteorder
4358 == output_bfd->xvec->header_byteorder);
4359
0e1862bb 4360 relocatable = bfd_link_relocatable (flaginfo->info);
252b5132
RH		 4361 syms = obj_aout_external_syms (input_bfd);
4362 strings = obj_aout_external_strings (input_bfd);
4363 sym_hashes = obj_aout_sym_hashes (input_bfd);
57402f1e 4364 symbol_map = flaginfo->symbol_map;
252b5132 4365
116c20d2 4366 reloc_count = rel_size / RELOC_EXT_SIZE;
252b5132
RH		 4367 rel = relocs;
4368 rel_end = rel + reloc_count;
4369 for (; rel < rel_end; rel++)
4370 {
4371 bfd_vma r_addr;
4372 int r_index;
4373 int r_extern;
116c20d2
NC		 4374 unsigned int r_type;
4375 bfd_vma r_addend;
252b5132 4376 struct aout_link_hash_entry *h = NULL;
116c20d2 4377 asection *r_section = NULL;
252b5132 4378 bfd_vma relocation;
252b5132
RH		 4379
4380 r_addr = GET_SWORD (input_bfd, rel->r_address);
4381
116c20d2
NC		 4382 if (bfd_header_big_endian (input_bfd))
4383 {
4384 r_index = (((unsigned int) rel->r_index[0] << 16)
4385 | ((unsigned int) rel->r_index[1] << 8)
4386 | rel->r_index[2]);
4387 r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG));
4388 r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
4389 >> RELOC_EXT_BITS_TYPE_SH_BIG);
4390 }
4391 else
4392 {
4393 r_index = (((unsigned int) rel->r_index[2] << 16)
4394 | ((unsigned int) rel->r_index[1] << 8)
4395 | rel->r_index[0]);
4396 r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE));
4397 r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
4398 >> RELOC_EXT_BITS_TYPE_SH_LITTLE);
4399 }
252b5132 4400
116c20d2 4401 r_addend = GET_SWORD (input_bfd, rel->r_addend);
252b5132 4402
ad756e3f
AM		 4403 if (r_type >= TABLE_SIZE (howto_table_ext))
4404 {
0aa13fee
AM		 4405 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
4406 input_bfd, r_type);
ad756e3f
AM		 4407 bfd_set_error (bfd_error_bad_value);
4408 return FALSE;
4409 }
252b5132 4410
1049f94e 4411 if (relocatable)
252b5132 4412 {
1049f94e 4413 /* We are generating a relocatable output file, and must
252b5132 4414 modify the reloc accordingly. */
116c20d2
NC		 4415 if (r_extern
4416 || r_type == (unsigned int) RELOC_BASE10
4417 || r_type == (unsigned int) RELOC_BASE13
4418 || r_type == (unsigned int) RELOC_BASE22)
252b5132
RH		 4419 {
4420 /* If we know the symbol this relocation is against,
4421 convert it into a relocation against a section. This
4422 is what the native linker does. */
116c20d2
NC		 4423 if (r_type == (unsigned int) RELOC_BASE10
4424 || r_type == (unsigned int) RELOC_BASE13
4425 || r_type == (unsigned int) RELOC_BASE22)
4426 h = NULL;
4427 else
4428 h = sym_hashes[r_index];
4429 if (h != NULL
252b5132
RH		 4430 && (h->root.type == bfd_link_hash_defined
4431 || h->root.type == bfd_link_hash_defweak))
4432 {
4433 asection *output_section;
4434
4435 /* Change the r_extern value. */
4436 if (bfd_header_big_endian (output_bfd))
116c20d2 4437 rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_BIG;
252b5132 4438 else
116c20d2 4439 rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_LITTLE;
252b5132
RH		 4440
4441 /* Compute a new r_index. */
4442 output_section = h->root.u.def.section->output_section;
4443 if (output_section == obj_textsec (output_bfd))
4444 r_index = N_TEXT;
4445 else if (output_section == obj_datasec (output_bfd))
4446 r_index = N_DATA;
4447 else if (output_section == obj_bsssec (output_bfd))
4448 r_index = N_BSS;
4449 else
4450 r_index = N_ABS;
4451
4452 /* Add the symbol value and the section VMA to the
116c20d2 4453 addend. */
252b5132
RH		 4454 relocation = (h->root.u.def.value
4455 + output_section->vma
4456 + h->root.u.def.section->output_offset);
116c20d2
NC		 4457
4458 /* Now RELOCATION is the VMA of the final
4459 destination. If this is a PC relative reloc,
4460 then ADDEND is the negative of the source VMA.
4461 We want to set ADDEND to the difference between
4462 the destination VMA and the source VMA, which
4463 means we must adjust RELOCATION by the change in
4464 the source VMA. This is done below. */
252b5132
RH		 4465 }
4466 else
4467 {
4468 /* We must change r_index according to the symbol
4469 map. */
4470 r_index = symbol_map[r_index];
4471
4472 if (r_index == -1)
4473 {
4474 if (h != NULL)
4475 {
4476 /* We decided to strip this symbol, but it
07d6d2b8
AM		 4477 turns out that we can't. Note that we
4478 lose the other and desc information here.
4479 I don't think that will ever matter for a
4480 global symbol. */
252b5132
RH		 4481 if (h->indx < 0)
4482 {
4483 h->indx = -2;
b34976b6 4484 h->written = FALSE;
7686d77d 4485 if (!aout_link_write_other_symbol (&h->root.root,
57402f1e 4486 flaginfo))
b34976b6 4487 return FALSE;
252b5132
RH		 4488 }
4489 r_index = h->indx;
4490 }
4491 else
4492 {
4493 const char *name;
4494
4495 name = strings + GET_WORD (input_bfd,
4496 syms[r_index].e_strx);
1a72702b
AM		 4497 (*flaginfo->info->callbacks->unattached_reloc)
4498 (flaginfo->info, name,
4499 input_bfd, input_section, r_addr);
252b5132
RH		 4500 r_index = 0;
4501 }
4502 }
4503
4504 relocation = 0;
116c20d2
NC		 4505
4506 /* If this is a PC relative reloc, then the addend
4507 is the negative of the source VMA. We must
4508 adjust it by the change in the source VMA. This
4509 is done below. */
252b5132
RH		 4510 }
4511
4512 /* Write out the new r_index value. */
4513 if (bfd_header_big_endian (output_bfd))
4514 {
4515 rel->r_index[0] = r_index >> 16;
4516 rel->r_index[1] = r_index >> 8;
4517 rel->r_index[2] = r_index;
4518 }
4519 else
4520 {
4521 rel->r_index[2] = r_index >> 16;
4522 rel->r_index[1] = r_index >> 8;
4523 rel->r_index[0] = r_index;
4524 }
4525 }
4526 else
4527 {
252b5132
RH		 4528 /* This is a relocation against a section. We must
4529 adjust by the amount that the section moved. */
116c20d2
NC		 4530 r_section = aout_reloc_index_to_section (input_bfd, r_index);
4531 relocation = (r_section->output_section->vma
4532 + r_section->output_offset
4533 - r_section->vma);
252b5132 4534
116c20d2
NC		 4535 /* If this is a PC relative reloc, then the addend is
4536 the difference in VMA between the destination and the
4537 source. We have just adjusted for the change in VMA
4538 of the destination, so we must also adjust by the
4539 change in VMA of the source. This is done below. */
4540 }
252b5132 4541
116c20d2
NC		 4542 /* As described above, we must always adjust a PC relative
4543 reloc by the change in VMA of the source. However, if
4544 pcrel_offset is set, then the addend does not include the
4545 location within the section, in which case we don't need
4546 to adjust anything. */
4547 if (howto_table_ext[r_type].pc_relative
4548 && ! howto_table_ext[r_type].pcrel_offset)
252b5132
RH		 4549 relocation -= (input_section->output_section->vma
4550 + input_section->output_offset
4551 - input_section->vma);
4552
116c20d2
NC		 4553 /* Change the addend if necessary. */
4554 if (relocation != 0)
4555 PUT_WORD (output_bfd, r_addend + relocation, rel->r_addend);
252b5132 4556
116c20d2
NC		 4557 /* Change the address of the relocation. */
4558 PUT_WORD (output_bfd,
4559 r_addr + input_section->output_offset,
4560 rel->r_address);
252b5132
RH		 4561 }
4562 else
4563 {
b34976b6 4564 bfd_boolean hundef;
116c20d2 4565 bfd_reloc_status_type r;
252b5132
RH		 4566
4567 /* We are generating an executable, and must do a full
4568 relocation. */
b34976b6 4569 hundef = FALSE;
252b5132
RH		 4570
4571 if (r_extern)
4572 {
4573 h = sym_hashes[r_index];
4574
116c20d2 4575 if (h != NULL
252b5132
RH		 4576 && (h->root.type == bfd_link_hash_defined
4577 || h->root.type == bfd_link_hash_defweak))
4578 {
4579 relocation = (h->root.u.def.value
4580 + h->root.u.def.section->output_section->vma
4581 + h->root.u.def.section->output_offset);
4582 }
116c20d2 4583 else if (h != NULL
252b5132
RH		 4584 && h->root.type == bfd_link_hash_undefweak)
4585 relocation = 0;
4586 else
4587 {
b34976b6 4588 hundef = TRUE;
252b5132
RH		 4589 relocation = 0;
4590 }
4591 }
116c20d2
NC		 4592 else if (r_type == (unsigned int) RELOC_BASE10
4593 || r_type == (unsigned int) RELOC_BASE13
4594 || r_type == (unsigned int) RELOC_BASE22)
4595 {
4596 struct external_nlist *sym;
4597 int type;
4598
4599 /* For base relative relocs, r_index is always an index
07d6d2b8 4600 into the symbol table, even if r_extern is 0. */
116c20d2
NC		 4601 sym = syms + r_index;
4602 type = H_GET_8 (input_bfd, sym->e_type);
4603 if ((type & N_TYPE) == N_TEXT
4604 || type == N_WEAKT)
4605 r_section = obj_textsec (input_bfd);
4606 else if ((type & N_TYPE) == N_DATA
4607 || type == N_WEAKD)
4608 r_section = obj_datasec (input_bfd);
4609 else if ((type & N_TYPE) == N_BSS
4610 || type == N_WEAKB)
4611 r_section = obj_bsssec (input_bfd);
4612 else if ((type & N_TYPE) == N_ABS
4613 || type == N_WEAKA)
4614 r_section = bfd_abs_section_ptr;
4615 else
4616 abort ();
4617 relocation = (r_section->output_section->vma
4618 + r_section->output_offset
4619 + (GET_WORD (input_bfd, sym->e_value)
4620 - r_section->vma));
4621 }
252b5132
RH		 4622 else
4623 {
116c20d2 4624 r_section = aout_reloc_index_to_section (input_bfd, r_index);
252b5132 4625
116c20d2
NC		 4626 /* If this is a PC relative reloc, then R_ADDEND is the
4627 difference between the two vmas, or
4628 old_dest_sec + old_dest_off - (old_src_sec + old_src_off)
4629 where
4630 old_dest_sec == section->vma
4631 and
4632 old_src_sec == input_section->vma
4633 and
4634 old_src_off == r_addr
4635
4636 _bfd_final_link_relocate expects RELOCATION +
4637 R_ADDEND to be the VMA of the destination minus
4638 r_addr (the minus r_addr is because this relocation
4639 is not pcrel_offset, which is a bit confusing and
4640 should, perhaps, be changed), or
4641 new_dest_sec
4642 where
4643 new_dest_sec == output_section->vma + output_offset
4644 We arrange for this to happen by setting RELOCATION to
4645 new_dest_sec + old_src_sec - old_dest_sec
4646
4647 If this is not a PC relative reloc, then R_ADDEND is
4648 simply the VMA of the destination, so we set
4649 RELOCATION to the change in the destination VMA, or
4650 new_dest_sec - old_dest_sec
4651 */
4652 relocation = (r_section->output_section->vma
4653 + r_section->output_offset
4654 - r_section->vma);
4655 if (howto_table_ext[r_type].pc_relative)
252b5132
RH		 4656 relocation += input_section->vma;
4657 }
4658
4659 if (check_dynamic_reloc != NULL)
4660 {
b34976b6 4661 bfd_boolean skip;
252b5132
RH		 4662
4663 if (! ((*check_dynamic_reloc)
57402f1e 4664 (flaginfo->info, input_bfd, input_section, h,
116c20d2 4665 (void *) rel, contents, &skip, &relocation)))
b34976b6 4666 return FALSE;
252b5132
RH		 4667 if (skip)
4668 continue;
4669 }
4670
4671 /* Now warn if a global symbol is undefined. We could not
07d6d2b8
AM		 4672 do this earlier, because check_dynamic_reloc might want
4673 to skip this reloc. */
116c20d2 4674 if (hundef
0e1862bb 4675 && ! bfd_link_pic (flaginfo->info)
116c20d2
NC		 4676 && r_type != (unsigned int) RELOC_BASE10
4677 && r_type != (unsigned int) RELOC_BASE13
4678 && r_type != (unsigned int) RELOC_BASE22)
252b5132
RH		 4679 {
4680 const char *name;
4681
4682 if (h != NULL)
4683 name = h->root.root.string;
4684 else
4685 name = strings + GET_WORD (input_bfd, syms[r_index].e_strx);
1a72702b
AM		 4686 (*flaginfo->info->callbacks->undefined_symbol)
4687 (flaginfo->info, name, input_bfd, input_section, r_addr, TRUE);
252b5132
RH		 4688 }
4689
116c20d2
NC		 4690 if (r_type != (unsigned int) RELOC_SPARC_REV32)
4691 r = MY_final_link_relocate (howto_table_ext + r_type,
4692 input_bfd, input_section,
4693 contents, r_addr, relocation,
4694 r_addend);
4695 else
252b5132 4696 {
116c20d2 4697 bfd_vma x;
252b5132 4698
116c20d2
NC		 4699 x = bfd_get_32 (input_bfd, contents + r_addr);
4700 x = x + relocation + r_addend;
4701 bfd_putl32 (/*input_bfd,*/ x, contents + r_addr);
4702 r = bfd_reloc_ok;
4703 }
4704
4705 if (r != bfd_reloc_ok)
4706 {
4707 switch (r)
4708 {
4709 default:
4710 case bfd_reloc_outofrange:
4711 abort ();
4712 case bfd_reloc_overflow:
252b5132 4713 {
116c20d2 4714 const char *name;
252b5132 4715
116c20d2
NC		 4716 if (h != NULL)
4717 name = NULL;
4718 else if (r_extern
4719 || r_type == (unsigned int) RELOC_BASE10
4720 || r_type == (unsigned int) RELOC_BASE13
4721 || r_type == (unsigned int) RELOC_BASE22)
4722 name = strings + GET_WORD (input_bfd,
4723 syms[r_index].e_strx);
4724 else
4725 {
4726 asection *s;
4727
4728 s = aout_reloc_index_to_section (input_bfd, r_index);
4729 name = bfd_section_name (input_bfd, s);
4730 }
1a72702b
AM		 4731 (*flaginfo->info->callbacks->reloc_overflow)
4732 (flaginfo->info, (h ? &h->root : NULL), name,
4733 howto_table_ext[r_type].name,
4734 r_addend, input_bfd, input_section, r_addr);
252b5132 4735 }
116c20d2
NC		 4736 break;
4737 }
252b5132
RH		 4738 }
4739 }
4740 }
4741
b34976b6 4742 return TRUE;
252b5132
RH		 4743}
4744
116c20d2
NC		 4745/* Link an a.out section into the output file. */
4746
4747static bfd_boolean
57402f1e 4748aout_link_input_section (struct aout_final_link_info *flaginfo,
116c20d2
NC		 4749 bfd *input_bfd,
4750 asection *input_section,
4751 file_ptr *reloff_ptr,
4752 bfd_size_type rel_size)
4753{
4754 bfd_size_type input_size;
4755 void * relocs;
4756
4757 /* Get the section contents. */
4758 input_size = input_section->size;
4759 if (! bfd_get_section_contents (input_bfd, input_section,
57402f1e 4760 (void *) flaginfo->contents,
116c20d2
NC		 4761 (file_ptr) 0, input_size))
4762 return FALSE;
4763
4764 /* Read in the relocs if we haven't already done it. */
4765 if (aout_section_data (input_section) != NULL
4766 && aout_section_data (input_section)->relocs != NULL)
4767 relocs = aout_section_data (input_section)->relocs;
4768 else
4769 {
57402f1e 4770 relocs = flaginfo->relocs;
116c20d2
NC		 4771 if (rel_size > 0)
4772 {
4773 if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0
4774 || bfd_bread (relocs, rel_size, input_bfd) != rel_size)
4775 return FALSE;
4776 }
4777 }
4778
4779 /* Relocate the section contents. */
4780 if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE)
4781 {
57402f1e 4782 if (! aout_link_input_section_std (flaginfo, input_bfd, input_section,
116c20d2 4783 (struct reloc_std_external *) relocs,
57402f1e 4784 rel_size, flaginfo->contents))
116c20d2
NC		 4785 return FALSE;
4786 }
4787 else
4788 {
57402f1e 4789 if (! aout_link_input_section_ext (flaginfo, input_bfd, input_section,
116c20d2 4790 (struct reloc_ext_external *) relocs,
57402f1e 4791 rel_size, flaginfo->contents))
116c20d2
NC		 4792 return FALSE;
4793 }
4794
4795 /* Write out the section contents. */
57402f1e 4796 if (! bfd_set_section_contents (flaginfo->output_bfd,
116c20d2 4797 input_section->output_section,
57402f1e 4798 (void *) flaginfo->contents,
116c20d2
NC		 4799 (file_ptr) input_section->output_offset,
4800 input_size))
4801 return FALSE;
4802
4803 /* If we are producing relocatable output, the relocs were
4804 modified, and we now write them out. */
0e1862bb 4805 if (bfd_link_relocatable (flaginfo->info) && rel_size > 0)
116c20d2 4806 {
57402f1e 4807 if (bfd_seek (flaginfo->output_bfd, *reloff_ptr, SEEK_SET) != 0)
116c20d2 4808 return FALSE;
57402f1e 4809 if (bfd_bwrite (relocs, rel_size, flaginfo->output_bfd) != rel_size)
116c20d2
NC		 4810 return FALSE;
4811 *reloff_ptr += rel_size;
4812
4813 /* Assert that the relocs have not run into the symbols, and
4814 that if these are the text relocs they have not run into the
4815 data relocs. */
57402f1e
NC		 4816 BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (flaginfo->output_bfd)
4817 && (reloff_ptr != &flaginfo->treloff
116c20d2 4818 || (*reloff_ptr
57402f1e 4819 <= obj_datasec (flaginfo->output_bfd)->rel_filepos)));
116c20d2
NC		 4820 }
4821
4822 return TRUE;
4823}
4824
4825/* Adjust and write out the symbols for an a.out file. Set the new
4826 symbol indices into a symbol_map. */
252b5132 4827
b34976b6 4828static bfd_boolean
57402f1e 4829aout_link_write_symbols (struct aout_final_link_info *flaginfo, bfd *input_bfd)
252b5132 4830{
252b5132 4831 bfd *output_bfd;
116c20d2 4832 bfd_size_type sym_count;
252b5132 4833 char *strings;
116c20d2
NC		 4834 enum bfd_link_strip strip;
4835 enum bfd_link_discard discard;
4836 struct external_nlist *outsym;
4837 bfd_size_type strtab_index;
4838 struct external_nlist *sym;
4839 struct external_nlist *sym_end;
4840 struct aout_link_hash_entry **sym_hash;
252b5132 4841 int *symbol_map;
116c20d2
NC		 4842 bfd_boolean pass;
4843 bfd_boolean skip_next;
252b5132 4844
57402f1e 4845 output_bfd = flaginfo->output_bfd;
116c20d2
NC		 4846 sym_count = obj_aout_external_sym_count (input_bfd);
4847 strings = obj_aout_external_strings (input_bfd);
57402f1e
NC		 4848 strip = flaginfo->info->strip;
4849 discard = flaginfo->info->discard;
4850 outsym = flaginfo->output_syms;
252b5132 4851
116c20d2
NC		 4852 /* First write out a symbol for this object file, unless we are
4853 discarding such symbols. */
4854 if (strip != strip_all
4855 && (strip != strip_some
57402f1e 4856 || bfd_hash_lookup (flaginfo->info->keep_hash, input_bfd->filename,
116c20d2
NC		 4857 FALSE, FALSE) != NULL)
4858 && discard != discard_all)
4859 {
4860 H_PUT_8 (output_bfd, N_TEXT, outsym->e_type);
4861 H_PUT_8 (output_bfd, 0, outsym->e_other);
4862 H_PUT_16 (output_bfd, 0, outsym->e_desc);
57402f1e 4863 strtab_index = add_to_stringtab (output_bfd, flaginfo->strtab,
116c20d2
NC		 4864 input_bfd->filename, FALSE);
4865 if (strtab_index == (bfd_size_type) -1)
4866 return FALSE;
4867 PUT_WORD (output_bfd, strtab_index, outsym->e_strx);
4868 PUT_WORD (output_bfd,
4869 (bfd_get_section_vma (output_bfd,
4870 obj_textsec (input_bfd)->output_section)
4871 + obj_textsec (input_bfd)->output_offset),
4872 outsym->e_value);
4873 ++obj_aout_external_sym_count (output_bfd);
4874 ++outsym;
4875 }
252b5132 4876
116c20d2
NC		 4877 pass = FALSE;
4878 skip_next = FALSE;
4879 sym = obj_aout_external_syms (input_bfd);
4880 sym_end = sym + sym_count;
4881 sym_hash = obj_aout_sym_hashes (input_bfd);
57402f1e 4882 symbol_map = flaginfo->symbol_map;
116c20d2
NC		 4883 memset (symbol_map, 0, (size_t) sym_count * sizeof *symbol_map);
4884 for (; sym < sym_end; sym++, sym_hash++, symbol_map++)
252b5132 4885 {
116c20d2
NC		 4886 const char *name;
4887 int type;
4888 struct aout_link_hash_entry *h;
4889 bfd_boolean skip;
4890 asection *symsec;
4891 bfd_vma val = 0;
4892 bfd_boolean copy;
252b5132 4893
116c20d2 4894 /* We set *symbol_map to 0 above for all symbols. If it has
07d6d2b8
AM		 4895 already been set to -1 for this symbol, it means that we are
4896 discarding it because it appears in a duplicate header file.
4897 See the N_BINCL code below. */
116c20d2
NC		 4898 if (*symbol_map == -1)
4899 continue;
252b5132 4900
116c20d2 4901 /* Initialize *symbol_map to -1, which means that the symbol was
07d6d2b8
AM		 4902 not copied into the output file. We will change it later if
4903 we do copy the symbol over. */
116c20d2
NC		 4904 *symbol_map = -1;
4905
4906 type = H_GET_8 (input_bfd, sym->e_type);
4907 name = strings + GET_WORD (input_bfd, sym->e_strx);
4908
4909 h = NULL;
4910
4911 if (pass)
252b5132 4912 {
116c20d2
NC		 4913 /* Pass this symbol through. It is the target of an
4914 indirect or warning symbol. */
4915 val = GET_WORD (input_bfd, sym->e_value);
4916 pass = FALSE;
252b5132 4917 }
116c20d2 4918 else if (skip_next)
252b5132 4919 {
116c20d2
NC		 4920 /* Skip this symbol, which is the target of an indirect
4921 symbol that we have changed to no longer be an indirect
4922 symbol. */
4923 skip_next = FALSE;
4924 continue;
252b5132 4925 }
116c20d2
NC		 4926 else
4927 {
4928 struct aout_link_hash_entry *hresolve;
252b5132 4929
116c20d2
NC		 4930 /* We have saved the hash table entry for this symbol, if
4931 there is one. Note that we could just look it up again
4932 in the hash table, provided we first check that it is an
4933 external symbol. */
4934 h = *sym_hash;
252b5132 4935
116c20d2 4936 /* Use the name from the hash table, in case the symbol was
07d6d2b8 4937 wrapped. */
116c20d2
NC		 4938 if (h != NULL
4939 && h->root.type != bfd_link_hash_warning)
4940 name = h->root.root.string;
252b5132 4941
116c20d2
NC		 4942 /* If this is an indirect or warning symbol, then change
4943 hresolve to the base symbol. We also change *sym_hash so
4944 that the relocation routines relocate against the real
4945 symbol. */
4946 hresolve = h;
4947 if (h != (struct aout_link_hash_entry *) NULL
4948 && (h->root.type == bfd_link_hash_indirect
4949 || h->root.type == bfd_link_hash_warning))
252b5132 4950 {
116c20d2
NC		 4951 hresolve = (struct aout_link_hash_entry *) h->root.u.i.link;
4952 while (hresolve->root.type == bfd_link_hash_indirect
4953 || hresolve->root.type == bfd_link_hash_warning)
4954 hresolve = ((struct aout_link_hash_entry *)
4955 hresolve->root.u.i.link);
4956 *sym_hash = hresolve;
4957 }
4958
4959 /* If the symbol has already been written out, skip it. */
4960 if (h != NULL
4961 && h->written)
4962 {
4963 if ((type & N_TYPE) == N_INDR
4964 || type == N_WARNING)
4965 skip_next = TRUE;
4966 *symbol_map = h->indx;
4967 continue;
4968 }
4969
4970 /* See if we are stripping this symbol. */
4971 skip = FALSE;
4972 switch (strip)
4973 {
4974 case strip_none:
4975 break;
4976 case strip_debugger:
4977 if ((type & N_STAB) != 0)
4978 skip = TRUE;
4979 break;
4980 case strip_some:
57402f1e 4981 if (bfd_hash_lookup (flaginfo->info->keep_hash, name, FALSE, FALSE)
116c20d2
NC		 4982 == NULL)
4983 skip = TRUE;
4984 break;
4985 case strip_all:
4986 skip = TRUE;
4987 break;
4988 }
4989 if (skip)
4990 {
4991 if (h != NULL)
4992 h->written = TRUE;
4993 continue;
4994 }
4995
4996 /* Get the value of the symbol. */
4997 if ((type & N_TYPE) == N_TEXT
4998 || type == N_WEAKT)
4999 symsec = obj_textsec (input_bfd);
5000 else if ((type & N_TYPE) == N_DATA
5001 || type == N_WEAKD)
5002 symsec = obj_datasec (input_bfd);
5003 else if ((type & N_TYPE) == N_BSS
5004 || type == N_WEAKB)
5005 symsec = obj_bsssec (input_bfd);
5006 else if ((type & N_TYPE) == N_ABS
5007 || type == N_WEAKA)
5008 symsec = bfd_abs_section_ptr;
5009 else if (((type & N_TYPE) == N_INDR
5010 && (hresolve == NULL
5011 || (hresolve->root.type != bfd_link_hash_defined
5012 && hresolve->root.type != bfd_link_hash_defweak
5013 && hresolve->root.type != bfd_link_hash_common)))
5014 || type == N_WARNING)
5015 {
5016 /* Pass the next symbol through unchanged. The
5017 condition above for indirect symbols is so that if
5018 the indirect symbol was defined, we output it with
5019 the correct definition so the debugger will
5020 understand it. */
5021 pass = TRUE;
5022 val = GET_WORD (input_bfd, sym->e_value);
5023 symsec = NULL;
5024 }
5025 else if ((type & N_STAB) != 0)
5026 {
5027 val = GET_WORD (input_bfd, sym->e_value);
5028 symsec = NULL;
5029 }
5030 else
5031 {
5032 /* If we get here with an indirect symbol, it means that
5033 we are outputting it with a real definition. In such
5034 a case we do not want to output the next symbol,
5035 which is the target of the indirection. */
5036 if ((type & N_TYPE) == N_INDR)
5037 skip_next = TRUE;
5038
5039 symsec = NULL;
5040
5041 /* We need to get the value from the hash table. We use
5042 hresolve so that if we have defined an indirect
5043 symbol we output the final definition. */
5044 if (h == NULL)
5045 {
5046 switch (type & N_TYPE)
5047 {
5048 case N_SETT:
5049 symsec = obj_textsec (input_bfd);
5050 break;
5051 case N_SETD:
5052 symsec = obj_datasec (input_bfd);
5053 break;
5054 case N_SETB:
5055 symsec = obj_bsssec (input_bfd);
5056 break;
5057 case N_SETA:
5058 symsec = bfd_abs_section_ptr;
5059 break;
5060 default:
5061 val = 0;
5062 break;
5063 }
5064 }
5065 else if (hresolve->root.type == bfd_link_hash_defined
5066 || hresolve->root.type == bfd_link_hash_defweak)
252b5132 5067 {
116c20d2 5068 asection *input_section;
252b5132
RH		 5069 asection *output_section;
5070
116c20d2
NC		 5071 /* This case usually means a common symbol which was
5072 turned into a defined symbol. */
5073 input_section = hresolve->root.u.def.section;
5074 output_section = input_section->output_section;
5075 BFD_ASSERT (bfd_is_abs_section (output_section)
5076 || output_section->owner == output_bfd);
5077 val = (hresolve->root.u.def.value
5078 + bfd_get_section_vma (output_bfd, output_section)
5079 + input_section->output_offset);
5080
5081 /* Get the correct type based on the section. If
5082 this is a constructed set, force it to be
5083 globally visible. */
5084 if (type == N_SETT
5085 || type == N_SETD
5086 || type == N_SETB
5087 || type == N_SETA)
5088 type |= N_EXT;
5089
5090 type &=~ N_TYPE;
252b5132 5091
252b5132 5092 if (output_section == obj_textsec (output_bfd))
116c20d2
NC		 5093 type |= (hresolve->root.type == bfd_link_hash_defined
5094 ? N_TEXT
5095 : N_WEAKT);
252b5132 5096 else if (output_section == obj_datasec (output_bfd))
116c20d2
NC		 5097 type |= (hresolve->root.type == bfd_link_hash_defined
5098 ? N_DATA
5099 : N_WEAKD);
252b5132 5100 else if (output_section == obj_bsssec (output_bfd))
116c20d2
NC		 5101 type |= (hresolve->root.type == bfd_link_hash_defined
5102 ? N_BSS
5103 : N_WEAKB);
252b5132 5104 else
116c20d2
NC		 5105 type |= (hresolve->root.type == bfd_link_hash_defined
5106 ? N_ABS
5107 : N_WEAKA);
5108 }
5109 else if (hresolve->root.type == bfd_link_hash_common)
5110 val = hresolve->root.u.c.size;
5111 else if (hresolve->root.type == bfd_link_hash_undefweak)
5112 {
5113 val = 0;
5114 type = N_WEAKU;
252b5132
RH		 5115 }
5116 else
116c20d2
NC		 5117 val = 0;
5118 }
5119 if (symsec != NULL)
5120 val = (symsec->output_section->vma
5121 + symsec->output_offset
5122 + (GET_WORD (input_bfd, sym->e_value)
5123 - symsec->vma));
5124
5125 /* If this is a global symbol set the written flag, and if
5126 it is a local symbol see if we should discard it. */
5127 if (h != NULL)
5128 {
5129 h->written = TRUE;
5130 h->indx = obj_aout_external_sym_count (output_bfd);
5131 }
5132 else if ((type & N_TYPE) != N_SETT
5133 && (type & N_TYPE) != N_SETD
5134 && (type & N_TYPE) != N_SETB
5135 && (type & N_TYPE) != N_SETA)
5136 {
5137 switch (discard)
252b5132 5138 {
116c20d2
NC		 5139 case discard_none:
5140 case discard_sec_merge:
5141 break;
5142 case discard_l:
5143 if ((type & N_STAB) == 0
5144 && bfd_is_local_label_name (input_bfd, name))
5145 skip = TRUE;
5146 break;
5147 case discard_all:
5148 skip = TRUE;
5149 break;
5150 }
5151 if (skip)
5152 {
5153 pass = FALSE;
5154 continue;
5155 }
5156 }
252b5132 5157
116c20d2
NC		 5158 /* An N_BINCL symbol indicates the start of the stabs
5159 entries for a header file. We need to scan ahead to the
5160 next N_EINCL symbol, ignoring nesting, adding up all the
5161 characters in the symbol names, not including the file
5162 numbers in types (the first number after an open
5163 parenthesis). */
5164 if (type == (int) N_BINCL)
5165 {
5166 struct external_nlist *incl_sym;
5167 int nest;
5168 struct aout_link_includes_entry *incl_entry;
5169 struct aout_link_includes_totals *t;
5170
5171 val = 0;
5172 nest = 0;
5173 for (incl_sym = sym + 1; incl_sym < sym_end; incl_sym++)
5174 {
5175 int incl_type;
5176
5177 incl_type = H_GET_8 (input_bfd, incl_sym->e_type);
5178 if (incl_type == (int) N_EINCL)
252b5132 5179 {
116c20d2
NC		 5180 if (nest == 0)
5181 break;
5182 --nest;
5183 }
5184 else if (incl_type == (int) N_BINCL)
5185 ++nest;
5186 else if (nest == 0)
5187 {
5188 const char *s;
5189
5190 s = strings + GET_WORD (input_bfd, incl_sym->e_strx);
5191 for (; *s != '\0'; s++)
252b5132 5192 {
116c20d2
NC		 5193 val += *s;
5194 if (*s == '(')
252b5132 5195 {
116c20d2
NC		 5196 /* Skip the file number. */
5197 ++s;
5198 while (ISDIGIT (*s))
5199 ++s;
5200 --s;
252b5132 5201 }
252b5132 5202 }
116c20d2
NC		 5203 }
5204 }
252b5132 5205
116c20d2 5206 /* If we have already included a header file with the
07d6d2b8
AM		 5207 same value, then replace this one with an N_EXCL
5208 symbol. */
57402f1e
NC		 5209 copy = (bfd_boolean) (! flaginfo->info->keep_memory);
5210 incl_entry = aout_link_includes_lookup (&flaginfo->includes,
116c20d2
NC		 5211 name, TRUE, copy);
5212 if (incl_entry == NULL)
5213 return FALSE;
5214 for (t = incl_entry->totals; t != NULL; t = t->next)
5215 if (t->total == val)
5216 break;
5217 if (t == NULL)
5218 {
5219 /* This is the first time we have seen this header
07d6d2b8 5220 file with this set of stabs strings. */
a50b1753 5221 t = (struct aout_link_includes_totals *)
07d6d2b8 5222 bfd_hash_allocate (&flaginfo->includes.root,
116c20d2
NC		 5223 sizeof *t);
5224 if (t == NULL)
5225 return FALSE;
5226 t->total = val;
5227 t->next = incl_entry->totals;
5228 incl_entry->totals = t;
5229 }
5230 else
5231 {
5232 int *incl_map;
5233
5234 /* This is a duplicate header file. We must change
07d6d2b8
AM		 5235 it to be an N_EXCL entry, and mark all the
5236 included symbols to prevent outputting them. */
116c20d2
NC		 5237 type = (int) N_EXCL;
5238
5239 nest = 0;
5240 for (incl_sym = sym + 1, incl_map = symbol_map + 1;
5241 incl_sym < sym_end;
5242 incl_sym++, incl_map++)
5243 {
5244 int incl_type;
5245
5246 incl_type = H_GET_8 (input_bfd, incl_sym->e_type);
5247 if (incl_type == (int) N_EINCL)
5248 {
5249 if (nest == 0)
5250 {
5251 *incl_map = -1;
5252 break;
5253 }
5254 --nest;
252b5132 5255 }
116c20d2
NC		 5256 else if (incl_type == (int) N_BINCL)
5257 ++nest;
5258 else if (nest == 0)
5259 *incl_map = -1;
252b5132 5260 }
252b5132
RH		 5261 }
5262 }
116c20d2
NC		 5263 }
5264
5265 /* Copy this symbol into the list of symbols we are going to
5266 write out. */
5267 H_PUT_8 (output_bfd, type, outsym->e_type);
5268 H_PUT_8 (output_bfd, H_GET_8 (input_bfd, sym->e_other), outsym->e_other);
5269 H_PUT_16 (output_bfd, H_GET_16 (input_bfd, sym->e_desc), outsym->e_desc);
5270 copy = FALSE;
57402f1e 5271 if (! flaginfo->info->keep_memory)
116c20d2
NC		 5272 {
5273 /* name points into a string table which we are going to
5274 free. If there is a hash table entry, use that string.
5275 Otherwise, copy name into memory. */
5276 if (h != NULL)
5277 name = h->root.root.string;
252b5132 5278 else
116c20d2
NC		 5279 copy = TRUE;
5280 }
57402f1e 5281 strtab_index = add_to_stringtab (output_bfd, flaginfo->strtab,
116c20d2
NC		 5282 name, copy);
5283 if (strtab_index == (bfd_size_type) -1)
5284 return FALSE;
5285 PUT_WORD (output_bfd, strtab_index, outsym->e_strx);
5286 PUT_WORD (output_bfd, val, outsym->e_value);
5287 *symbol_map = obj_aout_external_sym_count (output_bfd);
5288 ++obj_aout_external_sym_count (output_bfd);
5289 ++outsym;
5290 }
252b5132 5291
116c20d2 5292 /* Write out the output symbols we have just constructed. */
57402f1e 5293 if (outsym > flaginfo->output_syms)
116c20d2
NC		 5294 {
5295 bfd_size_type outsym_size;
252b5132 5296
57402f1e 5297 if (bfd_seek (output_bfd, flaginfo->symoff, SEEK_SET) != 0)
116c20d2 5298 return FALSE;
57402f1e 5299 outsym_size = outsym - flaginfo->output_syms;
116c20d2 5300 outsym_size *= EXTERNAL_NLIST_SIZE;
57402f1e 5301 if (bfd_bwrite ((void *) flaginfo->output_syms, outsym_size, output_bfd)
116c20d2
NC		 5302 != outsym_size)
5303 return FALSE;
57402f1e 5304 flaginfo->symoff += outsym_size;
116c20d2 5305 }
252b5132 5306
116c20d2
NC		 5307 return TRUE;
5308}
252b5132 5309
116c20d2 5310/* Link an a.out input BFD into the output file. */
252b5132 5311
116c20d2 5312static bfd_boolean
57402f1e 5313aout_link_input_bfd (struct aout_final_link_info *flaginfo, bfd *input_bfd)
116c20d2 5314{
116c20d2 5315 BFD_ASSERT (bfd_get_format (input_bfd) == bfd_object);
252b5132 5316
116c20d2
NC		 5317 /* If this is a dynamic object, it may need special handling. */
5318 if ((input_bfd->flags & DYNAMIC) != 0
5319 && aout_backend_info (input_bfd)->link_dynamic_object != NULL)
5320 return ((*aout_backend_info (input_bfd)->link_dynamic_object)
57402f1e 5321 (flaginfo->info, input_bfd));
252b5132 5322
116c20d2 5323 /* Get the symbols. We probably have them already, unless
57402f1e 5324 flaginfo->info->keep_memory is FALSE. */
116c20d2
NC		 5325 if (! aout_get_external_symbols (input_bfd))
5326 return FALSE;
252b5132 5327
116c20d2 5328 /* Write out the symbols and get a map of the new indices. The map
57402f1e
NC		 5329 is placed into flaginfo->symbol_map. */
5330 if (! aout_link_write_symbols (flaginfo, input_bfd))
116c20d2 5331 return FALSE;
252b5132 5332
116c20d2
NC		 5333 /* Relocate and write out the sections. These functions use the
5334 symbol map created by aout_link_write_symbols. The linker_mark
5335 field will be set if these sections are to be included in the
5336 link, which will normally be the case. */
5337 if (obj_textsec (input_bfd)->linker_mark)
5338 {
57402f1e 5339 if (! aout_link_input_section (flaginfo, input_bfd,
116c20d2 5340 obj_textsec (input_bfd),
57402f1e 5341 &flaginfo->treloff,
116c20d2
NC		 5342 exec_hdr (input_bfd)->a_trsize))
5343 return FALSE;
5344 }
5345 if (obj_datasec (input_bfd)->linker_mark)
5346 {
57402f1e 5347 if (! aout_link_input_section (flaginfo, input_bfd,
116c20d2 5348 obj_datasec (input_bfd),
57402f1e 5349 &flaginfo->dreloff,
116c20d2
NC		 5350 exec_hdr (input_bfd)->a_drsize))
5351 return FALSE;
5352 }
5353
5354 /* If we are not keeping memory, we don't need the symbols any
5355 longer. We still need them if we are keeping memory, because the
5356 strings in the hash table point into them. */
57402f1e 5357 if (! flaginfo->info->keep_memory)
116c20d2
NC		 5358 {
5359 if (! aout_link_free_symbols (input_bfd))
5360 return FALSE;
5361 }
5362
5363 return TRUE;
5364}
5365
5366/* Do the final link step. This is called on the output BFD. The
5367 INFO structure should point to a list of BFDs linked through the
c72f2fb2 5368 link.next field which can be used to find each BFD which takes part
116c20d2
NC		 5369 in the output. Also, each section in ABFD should point to a list
5370 of bfd_link_order structures which list all the input sections for
5371 the output section. */
5372
5373bfd_boolean
5374NAME (aout, final_link) (bfd *abfd,
5375 struct bfd_link_info *info,
5376 void (*callback) (bfd *, file_ptr *, file_ptr *, file_ptr *))
5377{
5378 struct aout_final_link_info aout_info;
5379 bfd_boolean includes_hash_initialized = FALSE;
5380 bfd *sub;
5381 bfd_size_type trsize, drsize;
5382 bfd_size_type max_contents_size;
5383 bfd_size_type max_relocs_size;
5384 bfd_size_type max_sym_count;
116c20d2
NC		 5385 struct bfd_link_order *p;
5386 asection *o;
5387 bfd_boolean have_link_order_relocs;
5388
0e1862bb 5389 if (bfd_link_pic (info))
116c20d2
NC		 5390 abfd->flags |= DYNAMIC;
5391
5392 aout_info.info = info;
5393 aout_info.output_bfd = abfd;
5394 aout_info.contents = NULL;
5395 aout_info.relocs = NULL;
5396 aout_info.symbol_map = NULL;
5397 aout_info.output_syms = NULL;
252b5132 5398
66eb6687
AM		 5399 if (!bfd_hash_table_init_n (&aout_info.includes.root,
5400 aout_link_includes_newfunc,
5401 sizeof (struct aout_link_includes_entry),
5402 251))
116c20d2
NC		 5403 goto error_return;
5404 includes_hash_initialized = TRUE;
252b5132 5405
116c20d2
NC		 5406 /* Figure out the largest section size. Also, if generating
5407 relocatable output, count the relocs. */
5408 trsize = 0;
5409 drsize = 0;
5410 max_contents_size = 0;
5411 max_relocs_size = 0;
5412 max_sym_count = 0;
c72f2fb2 5413 for (sub = info->input_bfds; sub != NULL; sub = sub->link.next)
116c20d2
NC		 5414 {
5415 bfd_size_type sz;
252b5132 5416
0e1862bb 5417 if (bfd_link_relocatable (info))
116c20d2
NC		 5418 {
5419 if (bfd_get_flavour (sub) == bfd_target_aout_flavour)
252b5132 5420 {
116c20d2
NC		 5421 trsize += exec_hdr (sub)->a_trsize;
5422 drsize += exec_hdr (sub)->a_drsize;
252b5132 5423 }
252b5132
RH		 5424 else
5425 {
116c20d2
NC		 5426 /* FIXME: We need to identify the .text and .data sections
5427 and call get_reloc_upper_bound and canonicalize_reloc to
5428 work out the number of relocs needed, and then multiply
5429 by the reloc size. */
4eca0228 5430 _bfd_error_handler
695344c0 5431 /* xgettext:c-format */
871b3ab2 5432 (_("%pB: relocatable link from %s to %s not supported"),
dae82561 5433 abfd, sub->xvec->name, abfd->xvec->name);
116c20d2
NC		 5434 bfd_set_error (bfd_error_invalid_operation);
5435 goto error_return;
252b5132 5436 }
116c20d2 5437 }
252b5132 5438
116c20d2
NC		 5439 if (bfd_get_flavour (sub) == bfd_target_aout_flavour)
5440 {
5441 sz = obj_textsec (sub)->size;
5442 if (sz > max_contents_size)
5443 max_contents_size = sz;
5444 sz = obj_datasec (sub)->size;
5445 if (sz > max_contents_size)
5446 max_contents_size = sz;
252b5132 5447
116c20d2
NC		 5448 sz = exec_hdr (sub)->a_trsize;
5449 if (sz > max_relocs_size)
5450 max_relocs_size = sz;
5451 sz = exec_hdr (sub)->a_drsize;
5452 if (sz > max_relocs_size)
5453 max_relocs_size = sz;
252b5132 5454
116c20d2
NC		 5455 sz = obj_aout_external_sym_count (sub);
5456 if (sz > max_sym_count)
5457 max_sym_count = sz;
252b5132
RH		 5458 }
5459 }
5460
0e1862bb 5461 if (bfd_link_relocatable (info))
116c20d2
NC		 5462 {
5463 if (obj_textsec (abfd) != NULL)
5464 trsize += (_bfd_count_link_order_relocs (obj_textsec (abfd)
8423293d 5465 ->map_head.link_order)
116c20d2
NC		 5466 * obj_reloc_entry_size (abfd));
5467 if (obj_datasec (abfd) != NULL)
5468 drsize += (_bfd_count_link_order_relocs (obj_datasec (abfd)
8423293d 5469 ->map_head.link_order)
116c20d2
NC		 5470 * obj_reloc_entry_size (abfd));
5471 }
252b5132 5472
116c20d2
NC		 5473 exec_hdr (abfd)->a_trsize = trsize;
5474 exec_hdr (abfd)->a_drsize = drsize;
252b5132 5475
116c20d2 5476 exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd);
252b5132 5477
116c20d2
NC		 5478 /* Adjust the section sizes and vmas according to the magic number.
5479 This sets a_text, a_data and a_bss in the exec_hdr and sets the
5480 filepos for each section. */
3a8c4a5b 5481 if (! NAME (aout, adjust_sizes_and_vmas) (abfd))
116c20d2 5482 goto error_return;
252b5132 5483
116c20d2
NC		 5484 /* The relocation and symbol file positions differ among a.out
5485 targets. We are passed a callback routine from the backend
5486 specific code to handle this.
5487 FIXME: At this point we do not know how much space the symbol
5488 table will require. This will not work for any (nonstandard)
5489 a.out target that needs to know the symbol table size before it
dc12032b 5490 can compute the relocation file positions. */
116c20d2
NC		 5491 (*callback) (abfd, &aout_info.treloff, &aout_info.dreloff,
5492 &aout_info.symoff);
5493 obj_textsec (abfd)->rel_filepos = aout_info.treloff;
5494 obj_datasec (abfd)->rel_filepos = aout_info.dreloff;
5495 obj_sym_filepos (abfd) = aout_info.symoff;
252b5132 5496
116c20d2
NC		 5497 /* We keep a count of the symbols as we output them. */
5498 obj_aout_external_sym_count (abfd) = 0;
5499
5500 /* We accumulate the string table as we write out the symbols. */
5501 aout_info.strtab = _bfd_stringtab_init ();
5502 if (aout_info.strtab == NULL)
5503 goto error_return;
5504
5505 /* Allocate buffers to hold section contents and relocs. */
a50b1753 5506 aout_info.contents = (bfd_byte *) bfd_malloc (max_contents_size);
116c20d2 5507 aout_info.relocs = bfd_malloc (max_relocs_size);
c38eb2a6 5508 aout_info.symbol_map = (int *) bfd_malloc (max_sym_count * sizeof (int));
a50b1753
NC		 5509 aout_info.output_syms = (struct external_nlist *)
5510 bfd_malloc ((max_sym_count + 1) * sizeof (struct external_nlist));
116c20d2
NC		 5511 if ((aout_info.contents == NULL && max_contents_size != 0)
5512 || (aout_info.relocs == NULL && max_relocs_size != 0)
5513 || (aout_info.symbol_map == NULL && max_sym_count != 0)
5514 || aout_info.output_syms == NULL)
5515 goto error_return;
5516
5517 /* If we have a symbol named __DYNAMIC, force it out now. This is
5518 required by SunOS. Doing this here rather than in sunos.c is a
5519 hack, but it's easier than exporting everything which would be
5520 needed. */
5521 {
5522 struct aout_link_hash_entry *h;
5523
5524 h = aout_link_hash_lookup (aout_hash_table (info), "__DYNAMIC",
5525 FALSE, FALSE, FALSE);
5526 if (h != NULL)
7686d77d 5527 aout_link_write_other_symbol (&h->root.root, &aout_info);
116c20d2
NC		 5528 }
5529
5530 /* The most time efficient way to do the link would be to read all
5531 the input object files into memory and then sort out the
5532 information into the output file. Unfortunately, that will
5533 probably use too much memory. Another method would be to step
5534 through everything that composes the text section and write it
5535 out, and then everything that composes the data section and write
5536 it out, and then write out the relocs, and then write out the
5537 symbols. Unfortunately, that requires reading stuff from each
5538 input file several times, and we will not be able to keep all the
5539 input files open simultaneously, and reopening them will be slow.
5540
5541 What we do is basically process one input file at a time. We do
5542 everything we need to do with an input file once--copy over the
5543 section contents, handle the relocation information, and write
5544 out the symbols--and then we throw away the information we read
5545 from it. This approach requires a lot of lseeks of the output
5546 file, which is unfortunate but still faster than reopening a lot
5547 of files.
5548
5549 We use the output_has_begun field of the input BFDs to see
5550 whether we have already handled it. */
c72f2fb2 5551 for (sub = info->input_bfds; sub != NULL; sub = sub->link.next)
116c20d2 5552 sub->output_has_begun = FALSE;
252b5132 5553
116c20d2
NC		 5554 /* Mark all sections which are to be included in the link. This
5555 will normally be every section. We need to do this so that we
5556 can identify any sections which the linker has decided to not
5557 include. */
5558 for (o = abfd->sections; o != NULL; o = o->next)
252b5132 5559 {
8423293d 5560 for (p = o->map_head.link_order; p != NULL; p = p->next)
116c20d2
NC		 5561 if (p->type == bfd_indirect_link_order)
5562 p->u.indirect.section->linker_mark = TRUE;
252b5132
RH		 5563 }
5564
116c20d2
NC		 5565 have_link_order_relocs = FALSE;
5566 for (o = abfd->sections; o != NULL; o = o->next)
252b5132 5567 {
8423293d 5568 for (p = o->map_head.link_order;
116c20d2
NC		 5569 p != NULL;
5570 p = p->next)
252b5132 5571 {
116c20d2
NC		 5572 if (p->type == bfd_indirect_link_order
5573 && (bfd_get_flavour (p->u.indirect.section->owner)
5574 == bfd_target_aout_flavour))
252b5132 5575 {
116c20d2
NC		 5576 bfd *input_bfd;
5577
5578 input_bfd = p->u.indirect.section->owner;
5579 if (! input_bfd->output_has_begun)
252b5132 5580 {
116c20d2
NC		 5581 if (! aout_link_input_bfd (&aout_info, input_bfd))
5582 goto error_return;
5583 input_bfd->output_has_begun = TRUE;
252b5132 5584 }
252b5132 5585 }
116c20d2
NC		 5586 else if (p->type == bfd_section_reloc_link_order
5587 || p->type == bfd_symbol_reloc_link_order)
5588 {
5589 /* These are handled below. */
5590 have_link_order_relocs = TRUE;
5591 }
5592 else
5593 {
5594 if (! _bfd_default_link_order (abfd, info, o, p))
5595 goto error_return;
5596 }
252b5132
RH		 5597 }
5598 }
252b5132 5599
116c20d2 5600 /* Write out any symbols that we have not already written out. */
7686d77d
AM		 5601 bfd_hash_traverse (&info->hash->table,
5602 aout_link_write_other_symbol,
5603 &aout_info);
116c20d2
NC		 5604
5605 /* Now handle any relocs we were asked to create by the linker.
5606 These did not come from any input file. We must do these after
5607 we have written out all the symbols, so that we know the symbol
5608 indices to use. */
5609 if (have_link_order_relocs)
5610 {
5611 for (o = abfd->sections; o != NULL; o = o->next)
252b5132 5612 {
8423293d 5613 for (p = o->map_head.link_order;
116c20d2
NC		 5614 p != NULL;
5615 p = p->next)
5616 {
5617 if (p->type == bfd_section_reloc_link_order
5618 || p->type == bfd_symbol_reloc_link_order)
5619 {
5620 if (! aout_link_reloc_link_order (&aout_info, o, p))
5621 goto error_return;
5622 }
5623 }
252b5132 5624 }
116c20d2 5625 }
252b5132 5626
116c20d2
NC		 5627 if (aout_info.contents != NULL)
5628 {
5629 free (aout_info.contents);
5630 aout_info.contents = NULL;
5631 }
5632 if (aout_info.relocs != NULL)
5633 {
5634 free (aout_info.relocs);
5635 aout_info.relocs = NULL;
5636 }
5637 if (aout_info.symbol_map != NULL)
5638 {
5639 free (aout_info.symbol_map);
5640 aout_info.symbol_map = NULL;
5641 }
5642 if (aout_info.output_syms != NULL)
5643 {
5644 free (aout_info.output_syms);
5645 aout_info.output_syms = NULL;
5646 }
5647 if (includes_hash_initialized)
5648 {
5649 bfd_hash_table_free (&aout_info.includes.root);
5650 includes_hash_initialized = FALSE;
5651 }
252b5132 5652
116c20d2
NC		 5653 /* Finish up any dynamic linking we may be doing. */
5654 if (aout_backend_info (abfd)->finish_dynamic_link != NULL)
5655 {
5656 if (! (*aout_backend_info (abfd)->finish_dynamic_link) (abfd, info))
5657 goto error_return;
252b5132
RH		 5658 }
5659
116c20d2
NC		 5660 /* Update the header information. */
5661 abfd->symcount = obj_aout_external_sym_count (abfd);
5662 exec_hdr (abfd)->a_syms = abfd->symcount * EXTERNAL_NLIST_SIZE;
5663 obj_str_filepos (abfd) = obj_sym_filepos (abfd) + exec_hdr (abfd)->a_syms;
5664 obj_textsec (abfd)->reloc_count =
5665 exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd);
5666 obj_datasec (abfd)->reloc_count =
5667 exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd);
252b5132 5668
116c20d2 5669 /* Write out the string table, unless there are no symbols. */
f6e688f7
AM		 5670 if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0)
5671 goto error_return;
116c20d2
NC		 5672 if (abfd->symcount > 0)
5673 {
f6e688f7 5674 if (!emit_stringtab (abfd, aout_info.strtab))
116c20d2
NC		 5675 goto error_return;
5676 }
f6e688f7 5677 else
116c20d2 5678 {
f6e688f7 5679 bfd_byte b[BYTES_IN_WORD];
252b5132 5680
f6e688f7
AM		 5681 memset (b, 0, BYTES_IN_WORD);
5682 if (bfd_bwrite (b, (bfd_size_type) BYTES_IN_WORD, abfd) != BYTES_IN_WORD)
116c20d2
NC		 5683 goto error_return;
5684 }
252b5132 5685
b34976b6 5686 return TRUE;
116c20d2
NC		 5687
5688 error_return:
5689 if (aout_info.contents != NULL)
5690 free (aout_info.contents);
5691 if (aout_info.relocs != NULL)
5692 free (aout_info.relocs);
5693 if (aout_info.symbol_map != NULL)
5694 free (aout_info.symbol_map);
5695 if (aout_info.output_syms != NULL)
5696 free (aout_info.output_syms);
5697 if (includes_hash_initialized)
5698 bfd_hash_table_free (&aout_info.includes.root);
5699 return FALSE;
252b5132 5700}
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