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[deliverable/binutils-gdb.git] / bfd / aoutx.h
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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 {
0301ce14
AM		 1346 if (! bfd_get_file_window (abfd, obj_str_filepos (abfd), stringsize,
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
AM		 1353 {
1354 strings = (char *) bfd_malloc (stringsize);
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
1373 strings[stringsize - 1] = 0;
1374
1375 obj_aout_external_strings (abfd) = strings;
1376 obj_aout_external_string_size (abfd) = stringsize;
1377 }
1378
b34976b6 1379 return TRUE;
252b5132
RH		 1380}
1381
1382/* Translate an a.out symbol into a BFD symbol. The desc, other, type
1383 and symbol->value fields of CACHE_PTR will be set from the a.out
1384 nlist structure. This function is responsible for setting
1385 symbol->flags and symbol->section, and adjusting symbol->value. */
1386
b34976b6 1387static bfd_boolean
116c20d2 1388translate_from_native_sym_flags (bfd *abfd, aout_symbol_type *cache_ptr)
252b5132
RH		 1389{
1390 flagword visible;
1391
1392 if ((cache_ptr->type & N_STAB) != 0
1393 || cache_ptr->type == N_FN)
1394 {
1395 asection *sec;
1396
1397 /* This is a debugging symbol. */
252b5132
RH		 1398 cache_ptr->symbol.flags = BSF_DEBUGGING;
1399
1400 /* Work out the symbol section. */
1401 switch (cache_ptr->type & N_TYPE)
1402 {
1403 case N_TEXT:
1404 case N_FN:
1405 sec = obj_textsec (abfd);
1406 break;
1407 case N_DATA:
1408 sec = obj_datasec (abfd);
1409 break;
1410 case N_BSS:
1411 sec = obj_bsssec (abfd);
1412 break;
1413 default:
1414 case N_ABS:
1415 sec = bfd_abs_section_ptr;
1416 break;
1417 }
1418
1419 cache_ptr->symbol.section = sec;
1420 cache_ptr->symbol.value -= sec->vma;
1421
b34976b6 1422 return TRUE;
252b5132
RH		 1423 }
1424
1425 /* Get the default visibility. This does not apply to all types, so
1426 we just hold it in a local variable to use if wanted. */
1427 if ((cache_ptr->type & N_EXT) == 0)
1428 visible = BSF_LOCAL;
1429 else
1430 visible = BSF_GLOBAL;
1431
1432 switch (cache_ptr->type)
1433 {
1434 default:
1435 case N_ABS: case N_ABS | N_EXT:
1436 cache_ptr->symbol.section = bfd_abs_section_ptr;
1437 cache_ptr->symbol.flags = visible;
1438 break;
1439
1440 case N_UNDF | N_EXT:
1441 if (cache_ptr->symbol.value != 0)
1442 {
1443 /* This is a common symbol. */
1444 cache_ptr->symbol.flags = BSF_GLOBAL;
1445 cache_ptr->symbol.section = bfd_com_section_ptr;
1446 }
1447 else
1448 {
1449 cache_ptr->symbol.flags = 0;
1450 cache_ptr->symbol.section = bfd_und_section_ptr;
1451 }
1452 break;
1453
1454 case N_TEXT: case N_TEXT | N_EXT:
1455 cache_ptr->symbol.section = obj_textsec (abfd);
1456 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1457 cache_ptr->symbol.flags = visible;
1458 break;
1459
1460 /* N_SETV symbols used to represent set vectors placed in the
1461 data section. They are no longer generated. Theoretically,
1462 it was possible to extract the entries and combine them with
1463 new ones, although I don't know if that was ever actually
1464 done. Unless that feature is restored, treat them as data
1465 symbols. */
1466 case N_SETV: case N_SETV | N_EXT:
1467 case N_DATA: case N_DATA | N_EXT:
1468 cache_ptr->symbol.section = obj_datasec (abfd);
1469 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1470 cache_ptr->symbol.flags = visible;
1471 break;
1472
1473 case N_BSS: case N_BSS | N_EXT:
1474 cache_ptr->symbol.section = obj_bsssec (abfd);
1475 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1476 cache_ptr->symbol.flags = visible;
1477 break;
1478
1479 case N_SETA: case N_SETA | N_EXT:
1480 case N_SETT: case N_SETT | N_EXT:
1481 case N_SETD: case N_SETD | N_EXT:
1482 case N_SETB: case N_SETB | N_EXT:
1483 {
1484 /* This code is no longer needed. It used to be used to make
07d6d2b8
AM		 1485 the linker handle set symbols, but they are now handled in
1486 the add_symbols routine instead. */
252b5132
RH		 1487 switch (cache_ptr->type & N_TYPE)
1488 {
1489 case N_SETA:
1490 cache_ptr->symbol.section = bfd_abs_section_ptr;
1491 break;
1492 case N_SETT:
1493 cache_ptr->symbol.section = obj_textsec (abfd);
1494 break;
1495 case N_SETD:
1496 cache_ptr->symbol.section = obj_datasec (abfd);
1497 break;
1498 case N_SETB:
1499 cache_ptr->symbol.section = obj_bsssec (abfd);
1500 break;
1501 }
1502
1503 cache_ptr->symbol.flags |= BSF_CONSTRUCTOR;
1504 }
1505 break;
1506
1507 case N_WARNING:
1508 /* This symbol is the text of a warning message. The next
1509 symbol is the symbol to associate the warning with. If a
1510 reference is made to that symbol, a warning is issued. */
1511 cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_WARNING;
1512 cache_ptr->symbol.section = bfd_abs_section_ptr;
1513 break;
1514
1515 case N_INDR: case N_INDR | N_EXT:
1516 /* An indirect symbol. This consists of two symbols in a row.
1517 The first symbol is the name of the indirection. The second
1518 symbol is the name of the target. A reference to the first
1519 symbol becomes a reference to the second. */
1520 cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_INDIRECT | visible;
1521 cache_ptr->symbol.section = bfd_ind_section_ptr;
1522 break;
1523
1524 case N_WEAKU:
1525 cache_ptr->symbol.section = bfd_und_section_ptr;
1526 cache_ptr->symbol.flags = BSF_WEAK;
1527 break;
1528
1529 case N_WEAKA:
1530 cache_ptr->symbol.section = bfd_abs_section_ptr;
1531 cache_ptr->symbol.flags = BSF_WEAK;
1532 break;
1533
1534 case N_WEAKT:
1535 cache_ptr->symbol.section = obj_textsec (abfd);
1536 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1537 cache_ptr->symbol.flags = BSF_WEAK;
1538 break;
1539
1540 case N_WEAKD:
1541 cache_ptr->symbol.section = obj_datasec (abfd);
1542 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1543 cache_ptr->symbol.flags = BSF_WEAK;
1544 break;
1545
1546 case N_WEAKB:
1547 cache_ptr->symbol.section = obj_bsssec (abfd);
1548 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1549 cache_ptr->symbol.flags = BSF_WEAK;
1550 break;
1551 }
1552
b34976b6 1553 return TRUE;
252b5132
RH		 1554}
1555
1556/* Set the fields of SYM_POINTER according to CACHE_PTR. */
1557
b34976b6 1558static bfd_boolean
116c20d2
NC		 1559translate_to_native_sym_flags (bfd *abfd,
1560 asymbol *cache_ptr,
1561 struct external_nlist *sym_pointer)
252b5132
RH		 1562{
1563 bfd_vma value = cache_ptr->value;
1564 asection *sec;
1565 bfd_vma off;
1566
1567 /* Mask out any existing type bits in case copying from one section
1568 to another. */
1569 sym_pointer->e_type[0] &= ~N_TYPE;
1570
1571 sec = bfd_get_section (cache_ptr);
1572 off = 0;
1573
1574 if (sec == NULL)
1575 {
1576 /* This case occurs, e.g., for the *DEBUG* section of a COFF
1577 file. */
4eca0228 1578 _bfd_error_handler
695344c0 1579 /* xgettext:c-format */
871b3ab2 1580 (_("%pB: can not represent section for symbol `%s' in a.out "
4eca0228 1581 "object file format"),
dae82561 1582 abfd,
252b5132
RH		 1583 cache_ptr->name != NULL ? cache_ptr->name : _("*unknown*"));
1584 bfd_set_error (bfd_error_nonrepresentable_section);
b34976b6 1585 return FALSE;
252b5132
RH		 1586 }
1587
1588 if (sec->output_section != NULL)
1589 {
1590 off = sec->output_offset;
1591 sec = sec->output_section;
1592 }
1593
1594 if (bfd_is_abs_section (sec))
1595 sym_pointer->e_type[0] |= N_ABS;
1596 else if (sec == obj_textsec (abfd))
1597 sym_pointer->e_type[0] |= N_TEXT;
1598 else if (sec == obj_datasec (abfd))
1599 sym_pointer->e_type[0] |= N_DATA;
1600 else if (sec == obj_bsssec (abfd))
1601 sym_pointer->e_type[0] |= N_BSS;
1602 else if (bfd_is_und_section (sec))
1603 sym_pointer->e_type[0] = N_UNDF | N_EXT;
1604 else if (bfd_is_ind_section (sec))
1605 sym_pointer->e_type[0] = N_INDR;
1606 else if (bfd_is_com_section (sec))
1607 sym_pointer->e_type[0] = N_UNDF | N_EXT;
1608 else
1609 {
e6af3a53
NC		 1610 if (aout_section_merge_with_text_p (abfd, sec))
1611 sym_pointer->e_type[0] |= N_TEXT;
1612 else
1613 {
4eca0228 1614 _bfd_error_handler
695344c0 1615 /* xgettext:c-format */
871b3ab2 1616 (_("%pB: can not represent section `%pA' in a.out object file format"),
dae82561 1617 abfd, sec);
07d6d2b8
AM		 1618 bfd_set_error (bfd_error_nonrepresentable_section);
1619 return FALSE;
e6af3a53 1620 }
252b5132
RH		 1621 }
1622
f7c33884 1623 /* Turn the symbol from section relative to absolute again. */
252b5132
RH		 1624 value += sec->vma + off;
1625
1626 if ((cache_ptr->flags & BSF_WARNING) != 0)
1627 sym_pointer->e_type[0] = N_WARNING;
1628
1629 if ((cache_ptr->flags & BSF_DEBUGGING) != 0)
1630 sym_pointer->e_type[0] = ((aout_symbol_type *) cache_ptr)->type;
1631 else if ((cache_ptr->flags & BSF_GLOBAL) != 0)
1632 sym_pointer->e_type[0] |= N_EXT;
930d924d
L		 1633 else if ((cache_ptr->flags & BSF_LOCAL) != 0)
1634 sym_pointer->e_type[0] &= ~N_EXT;
252b5132
RH		 1635
1636 if ((cache_ptr->flags & BSF_CONSTRUCTOR) != 0)
1637 {
1638 int type = ((aout_symbol_type *) cache_ptr)->type;
f7c33884 1639
252b5132
RH		 1640 switch (type)
1641 {
1642 case N_ABS: type = N_SETA; break;
1643 case N_TEXT: type = N_SETT; break;
1644 case N_DATA: type = N_SETD; break;
1645 case N_BSS: type = N_SETB; break;
1646 }
1647 sym_pointer->e_type[0] = type;
1648 }
1649
1650 if ((cache_ptr->flags & BSF_WEAK) != 0)
1651 {
1652 int type;
1653
1654 switch (sym_pointer->e_type[0] & N_TYPE)
1655 {
1656 default:
1657 case N_ABS: type = N_WEAKA; break;
1658 case N_TEXT: type = N_WEAKT; break;
1659 case N_DATA: type = N_WEAKD; break;
1660 case N_BSS: type = N_WEAKB; break;
1661 case N_UNDF: type = N_WEAKU; break;
1662 }
1663 sym_pointer->e_type[0] = type;
1664 }
1665
923f08ff 1666 PUT_WORD (abfd, value, sym_pointer->e_value);
252b5132 1667
b34976b6 1668 return TRUE;
252b5132
RH		 1669}
1670\f
0ef5a5bd 1671/* Native-level interface to symbols. */
252b5132
RH		 1672
1673asymbol *
116c20d2 1674NAME (aout, make_empty_symbol) (bfd *abfd)
252b5132 1675{
dc810e39 1676 bfd_size_type amt = sizeof (aout_symbol_type);
116c20d2 1677
d3ce72d0
NC		 1678 aout_symbol_type *new_symbol = (aout_symbol_type *) bfd_zalloc (abfd, amt);
1679 if (!new_symbol)
252b5132 1680 return NULL;
d3ce72d0 1681 new_symbol->symbol.the_bfd = abfd;
252b5132 1682
d3ce72d0 1683 return &new_symbol->symbol;
252b5132
RH		 1684}
1685
1686/* Translate a set of internal symbols into external symbols. */
1687
b34976b6 1688bfd_boolean
116c20d2
NC		 1689NAME (aout, translate_symbol_table) (bfd *abfd,
1690 aout_symbol_type *in,
1691 struct external_nlist *ext,
1692 bfd_size_type count,
1693 char *str,
1694 bfd_size_type strsize,
1695 bfd_boolean dynamic)
252b5132
RH		 1696{
1697 struct external_nlist *ext_end;
1698
1699 ext_end = ext + count;
1700 for (; ext < ext_end; ext++, in++)
1701 {
1702 bfd_vma x;
1703
1704 x = GET_WORD (abfd, ext->e_strx);
1705 in->symbol.the_bfd = abfd;
1706
1707 /* For the normal symbols, the zero index points at the number
1708 of bytes in the string table but is to be interpreted as the
1709 null string. For the dynamic symbols, the number of bytes in
1710 the string table is stored in the __DYNAMIC structure and the
1711 zero index points at an actual string. */
1712 if (x == 0 && ! dynamic)
1713 in->symbol.name = "";
1714 else if (x < strsize)
1715 in->symbol.name = str + x;
1716 else
0d329c0a
AM		 1717 {
1718 _bfd_error_handler
1719 (_("%pB: invalid string offset %" PRIu64 " >= %" PRIu64),
1720 abfd, (uint64_t) x, (uint64_t) strsize);
1721 bfd_set_error (bfd_error_bad_value);
1722 return FALSE;
1723 }
252b5132
RH		 1724
1725 in->symbol.value = GET_SWORD (abfd, ext->e_value);
dc810e39
AM		 1726 in->desc = H_GET_16 (abfd, ext->e_desc);
1727 in->other = H_GET_8 (abfd, ext->e_other);
1728 in->type = H_GET_8 (abfd, ext->e_type);
252b5132
RH		 1729 in->symbol.udata.p = NULL;
1730
1731 if (! translate_from_native_sym_flags (abfd, in))
b34976b6 1732 return FALSE;
252b5132
RH		 1733
1734 if (dynamic)
1735 in->symbol.flags |= BSF_DYNAMIC;
1736 }
1737
b34976b6 1738 return TRUE;
252b5132
RH		 1739}
1740
1741/* We read the symbols into a buffer, which is discarded when this
1742 function exits. We read the strings into a buffer large enough to
0ef5a5bd 1743 hold them all plus all the cached symbol entries. */
252b5132 1744
b34976b6 1745bfd_boolean
116c20d2 1746NAME (aout, slurp_symbol_table) (bfd *abfd)
252b5132
RH		 1747{
1748 struct external_nlist *old_external_syms;
1749 aout_symbol_type *cached;
dc810e39 1750 bfd_size_type cached_size;
252b5132 1751
f7c33884 1752 /* If there's no work to be done, don't do any. */
116c20d2 1753 if (obj_aout_symbols (abfd) != NULL)
b34976b6 1754 return TRUE;
252b5132
RH		 1755
1756 old_external_syms = obj_aout_external_syms (abfd);
1757
1758 if (! aout_get_external_symbols (abfd))
b34976b6 1759 return FALSE;
252b5132 1760
dc810e39 1761 cached_size = obj_aout_external_sym_count (abfd);
87b32780
MS		 1762 if (cached_size == 0)
1763 return TRUE; /* Nothing to do. */
1764
dc810e39 1765 cached_size *= sizeof (aout_symbol_type);
a50b1753 1766 cached = (aout_symbol_type *) bfd_zmalloc (cached_size);
87b32780 1767 if (cached == NULL)
b34976b6 1768 return FALSE;
252b5132
RH		 1769
1770 /* Convert from external symbol information to internal. */
116c20d2 1771 if (! (NAME (aout, translate_symbol_table)
252b5132
RH		 1772 (abfd, cached,
1773 obj_aout_external_syms (abfd),
1774 obj_aout_external_sym_count (abfd),
1775 obj_aout_external_strings (abfd),
1776 obj_aout_external_string_size (abfd),
b34976b6 1777 FALSE)))
252b5132
RH		 1778 {
1779 free (cached);
b34976b6 1780 return FALSE;
252b5132
RH		 1781 }
1782
1783 bfd_get_symcount (abfd) = obj_aout_external_sym_count (abfd);
1784
1785 obj_aout_symbols (abfd) = cached;
1786
1787 /* It is very likely that anybody who calls this function will not
1788 want the external symbol information, so if it was allocated
1789 because of our call to aout_get_external_symbols, we free it up
1790 right away to save space. */
116c20d2
NC		 1791 if (old_external_syms == NULL
1792 && obj_aout_external_syms (abfd) != NULL)
252b5132
RH		 1793 {
1794#ifdef USE_MMAP
1795 bfd_free_window (&obj_aout_sym_window (abfd));
1796#else
1797 free (obj_aout_external_syms (abfd));
1798#endif
1799 obj_aout_external_syms (abfd) = NULL;
1800 }
1801
b34976b6 1802 return TRUE;
252b5132
RH		 1803}
1804\f
1805/* We use a hash table when writing out symbols so that we only write
1806 out a particular string once. This helps particularly when the
1807 linker writes out stabs debugging entries, because each different
1808 contributing object file tends to have many duplicate stabs
1809 strings.
1810
1811 This hash table code breaks dbx on SunOS 4.1.3, so we don't do it
1812 if BFD_TRADITIONAL_FORMAT is set. */
1813
252b5132
RH		 1814/* Get the index of a string in a strtab, adding it if it is not
1815 already present. */
1816
116c20d2
NC		 1817static inline bfd_size_type
1818add_to_stringtab (bfd *abfd,
1819 struct bfd_strtab_hash *tab,
1820 const char *str,
1821 bfd_boolean copy)
252b5132 1822{
b34976b6 1823 bfd_boolean hash;
91d6fa6a 1824 bfd_size_type str_index;
252b5132
RH		 1825
1826 /* An index of 0 always means the empty string. */
1827 if (str == 0 || *str == '\0')
1828 return 0;
1829
1830 /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx
1831 doesn't understand a hashed string table. */
b34976b6 1832 hash = TRUE;
252b5132 1833 if ((abfd->flags & BFD_TRADITIONAL_FORMAT) != 0)
b34976b6 1834 hash = FALSE;
252b5132 1835
91d6fa6a 1836 str_index = _bfd_stringtab_add (tab, str, hash, copy);
252b5132 1837
91d6fa6a 1838 if (str_index != (bfd_size_type) -1)
116c20d2
NC		 1839 /* Add BYTES_IN_WORD to the return value to account for the
1840 space taken up by the string table size. */
91d6fa6a 1841 str_index += BYTES_IN_WORD;
252b5132 1842
91d6fa6a 1843 return str_index;
252b5132
RH		 1844}
1845
1846/* Write out a strtab. ABFD is already at the right location in the
1847 file. */
1848
b34976b6 1849static bfd_boolean
116c20d2 1850emit_stringtab (bfd *abfd, struct bfd_strtab_hash *tab)
252b5132
RH		 1851{
1852 bfd_byte buffer[BYTES_IN_WORD];
dc810e39 1853 bfd_size_type amt = BYTES_IN_WORD;
252b5132
RH		 1854
1855 /* The string table starts with the size. */
1856 PUT_WORD (abfd, _bfd_stringtab_size (tab) + BYTES_IN_WORD, buffer);
116c20d2 1857 if (bfd_bwrite ((void *) buffer, amt, abfd) != amt)
b34976b6 1858 return FALSE;
252b5132
RH		 1859
1860 return _bfd_stringtab_emit (abfd, tab);
1861}
1862\f
b34976b6 1863bfd_boolean
116c20d2 1864NAME (aout, write_syms) (bfd *abfd)
252b5132
RH		 1865{
1866 unsigned int count ;
1867 asymbol **generic = bfd_get_outsymbols (abfd);
1868 struct bfd_strtab_hash *strtab;
1869
1870 strtab = _bfd_stringtab_init ();
1871 if (strtab == NULL)
b34976b6 1872 return FALSE;
252b5132
RH		 1873
1874 for (count = 0; count < bfd_get_symcount (abfd); count++)
1875 {
1876 asymbol *g = generic[count];
1877 bfd_size_type indx;
1878 struct external_nlist nsp;
dc810e39 1879 bfd_size_type amt;
252b5132 1880
b34976b6 1881 indx = add_to_stringtab (abfd, strtab, g->name, FALSE);
252b5132
RH		 1882 if (indx == (bfd_size_type) -1)
1883 goto error_return;
1884 PUT_WORD (abfd, indx, (bfd_byte *) nsp.e_strx);
1885
923f08ff 1886 if (bfd_asymbol_flavour (g) == abfd->xvec->flavour)
252b5132 1887 {
923f08ff
AM		 1888 H_PUT_16 (abfd, aout_symbol (g)->desc, nsp.e_desc);
1889 H_PUT_8 (abfd, aout_symbol (g)->other, nsp.e_other);
1890 H_PUT_8 (abfd, aout_symbol (g)->type, nsp.e_type);
252b5132
RH		 1891 }
1892 else
1893 {
dc810e39
AM		 1894 H_PUT_16 (abfd, 0, nsp.e_desc);
1895 H_PUT_8 (abfd, 0, nsp.e_other);
1896 H_PUT_8 (abfd, 0, nsp.e_type);
252b5132
RH		 1897 }
1898
1899 if (! translate_to_native_sym_flags (abfd, g, &nsp))
1900 goto error_return;
1901
dc810e39 1902 amt = EXTERNAL_NLIST_SIZE;
116c20d2 1903 if (bfd_bwrite ((void *) &nsp, amt, abfd) != amt)
252b5132
RH		 1904 goto error_return;
1905
1906 /* NB: `KEEPIT' currently overlays `udata.p', so set this only
1907 here, at the end. */
1908 g->KEEPIT = count;
1909 }
1910
1911 if (! emit_stringtab (abfd, strtab))
1912 goto error_return;
1913
1914 _bfd_stringtab_free (strtab);
1915
b34976b6 1916 return TRUE;
252b5132
RH		 1917
1918error_return:
1919 _bfd_stringtab_free (strtab);
b34976b6 1920 return FALSE;
252b5132 1921}
252b5132
RH		 1922\f
1923long
116c20d2 1924NAME (aout, canonicalize_symtab) (bfd *abfd, asymbol **location)
252b5132 1925{
116c20d2
NC		 1926 unsigned int counter = 0;
1927 aout_symbol_type *symbase;
252b5132 1928
116c20d2
NC		 1929 if (!NAME (aout, slurp_symbol_table) (abfd))
1930 return -1;
252b5132 1931
116c20d2
NC		 1932 for (symbase = obj_aout_symbols (abfd);
1933 counter++ < bfd_get_symcount (abfd);
1934 )
1935 *(location++) = (asymbol *) (symbase++);
1936 *location++ =0;
1937 return bfd_get_symcount (abfd);
252b5132 1938}
252b5132 1939\f
f7c33884 1940/* Standard reloc stuff. */
0ef5a5bd 1941/* Output standard relocation information to a file in target byte order. */
252b5132 1942
116c20d2
NC		 1943extern void NAME (aout, swap_std_reloc_out)
1944 (bfd *, arelent *, struct reloc_std_external *);
252b5132
RH		 1945
1946void
116c20d2
NC		 1947NAME (aout, swap_std_reloc_out) (bfd *abfd,
1948 arelent *g,
1949 struct reloc_std_external *natptr)
252b5132
RH		 1950{
1951 int r_index;
1952 asymbol *sym = *(g->sym_ptr_ptr);
1953 int r_extern;
1954 unsigned int r_length;
1955 int r_pcrel;
1956 int r_baserel, r_jmptable, r_relative;
1957 asection *output_section = sym->section->output_section;
1958
923f08ff 1959 PUT_WORD (abfd, g->address, natptr->r_address);
252b5132 1960
e2996cc3 1961 BFD_ASSERT (g->howto != NULL);
f7c33884
NC		 1962 r_length = g->howto->size ; /* Size as a power of two. */
1963 r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */
252b5132
RH		 1964 /* XXX This relies on relocs coming from a.out files. */
1965 r_baserel = (g->howto->type & 8) != 0;
1966 r_jmptable = (g->howto->type & 16) != 0;
1967 r_relative = (g->howto->type & 32) != 0;
1968
f7c33884 1969 /* Name was clobbered by aout_write_syms to be symbol index. */
252b5132
RH		 1970
1971 /* If this relocation is relative to a symbol then set the
1972 r_index to the symbols index, and the r_extern bit.
1973
1974 Absolute symbols can come in in two ways, either as an offset
1975 from the abs section, or as a symbol which has an abs value.
f7c33884 1976 check for that here. */
252b5132 1977
252b5132
RH		 1978 if (bfd_is_com_section (output_section)
1979 || bfd_is_abs_section (output_section)
22184a77
NC		 1980 || bfd_is_und_section (output_section)
1981 /* PR gas/3041 a.out relocs against weak symbols
1982 must be treated as if they were against externs. */
1983 || (sym->flags & BSF_WEAK))
252b5132
RH		 1984 {
1985 if (bfd_abs_section_ptr->symbol == sym)
f7c33884
NC		 1986 {
1987 /* Whoops, looked like an abs symbol, but is
1988 really an offset from the abs section. */
1989 r_index = N_ABS;
1990 r_extern = 0;
1991 }
252b5132 1992 else
f7c33884
NC		 1993 {
1994 /* Fill in symbol. */
1995 r_extern = 1;
1996 r_index = (*(g->sym_ptr_ptr))->KEEPIT;
1997 }
252b5132
RH		 1998 }
1999 else
2000 {
f7c33884 2001 /* Just an ordinary section. */
252b5132
RH		 2002 r_extern = 0;
2003 r_index = output_section->target_index;
2004 }
2005
f7c33884 2006 /* Now the fun stuff. */
923f08ff
AM		 2007 if (bfd_header_big_endian (abfd))
2008 {
252b5132
RH		 2009 natptr->r_index[0] = r_index >> 16;
2010 natptr->r_index[1] = r_index >> 8;
2011 natptr->r_index[2] = r_index;
923f08ff
AM		 2012 natptr->r_type[0] = ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0)
2013 | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0)
2014 | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0)
2015 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0)
2016 | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0)
2017 | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG));
2018 }
2019 else
2020 {
2021 natptr->r_index[2] = r_index >> 16;
2022 natptr->r_index[1] = r_index >> 8;
2023 natptr->r_index[0] = r_index;
2024 natptr->r_type[0] = ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0)
2025 | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0)
2026 | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0)
2027 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0)
2028 | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0)
2029 | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE));
2030 }
252b5132
RH		 2031}
2032
f7c33884 2033/* Extended stuff. */
0ef5a5bd 2034/* Output extended relocation information to a file in target byte order. */
252b5132 2035
116c20d2
NC		 2036extern void NAME (aout, swap_ext_reloc_out)
2037 (bfd *, arelent *, struct reloc_ext_external *);
252b5132
RH		 2038
2039void
116c20d2
NC		 2040NAME (aout, swap_ext_reloc_out) (bfd *abfd,
2041 arelent *g,
2042 struct reloc_ext_external *natptr)
252b5132
RH		 2043{
2044 int r_index;
2045 int r_extern;
2046 unsigned int r_type;
dc810e39 2047 bfd_vma r_addend;
252b5132
RH		 2048 asymbol *sym = *(g->sym_ptr_ptr);
2049 asection *output_section = sym->section->output_section;
2050
2051 PUT_WORD (abfd, g->address, natptr->r_address);
2052
2053 r_type = (unsigned int) g->howto->type;
2054
2055 r_addend = g->addend;
2056 if ((sym->flags & BSF_SECTION_SYM) != 0)
2057 r_addend += (*(g->sym_ptr_ptr))->section->output_section->vma;
2058
2059 /* If this relocation is relative to a symbol then set the
2060 r_index to the symbols index, and the r_extern bit.
2061
2062 Absolute symbols can come in in two ways, either as an offset
2063 from the abs section, or as a symbol which has an abs value.
2064 check for that here. */
252b5132
RH		 2065 if (bfd_is_abs_section (bfd_get_section (sym)))
2066 {
2067 r_extern = 0;
2068 r_index = N_ABS;
2069 }
2070 else if ((sym->flags & BSF_SECTION_SYM) == 0)
2071 {
2072 if (bfd_is_und_section (bfd_get_section (sym))
2073 || (sym->flags & BSF_GLOBAL) != 0)
2074 r_extern = 1;
2075 else
2076 r_extern = 0;
2077 r_index = (*(g->sym_ptr_ptr))->KEEPIT;
2078 }
2079 else
2080 {
f7c33884 2081 /* Just an ordinary section. */
252b5132
RH		 2082 r_extern = 0;
2083 r_index = output_section->target_index;
2084 }
2085
f7c33884 2086 /* Now the fun stuff. */
923f08ff
AM		 2087 if (bfd_header_big_endian (abfd))
2088 {
2089 natptr->r_index[0] = r_index >> 16;
2090 natptr->r_index[1] = r_index >> 8;
2091 natptr->r_index[2] = r_index;
2092 natptr->r_type[0] = ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0)
2093 | (r_type << RELOC_EXT_BITS_TYPE_SH_BIG));
2094 }
2095 else
2096 {
2097 natptr->r_index[2] = r_index >> 16;
2098 natptr->r_index[1] = r_index >> 8;
2099 natptr->r_index[0] = r_index;
2100 natptr->r_type[0] = ((r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0)
2101 | (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE));
2102 }
252b5132
RH		 2103
2104 PUT_WORD (abfd, r_addend, natptr->r_addend);
2105}
2106
2107/* BFD deals internally with all things based from the section they're
2108 in. so, something in 10 bytes into a text section with a base of
2109 50 would have a symbol (.text+10) and know .text vma was 50.
2110
2111 Aout keeps all it's symbols based from zero, so the symbol would
2112 contain 60. This macro subs the base of each section from the value
923f08ff
AM		 2113 to give the true offset from the section. */
2114
2115#define MOVE_ADDRESS(ad) \
2116 if (r_extern) \
2117 { \
2118 /* Undefined symbol. */ \
2119 cache_ptr->sym_ptr_ptr = symbols + r_index; \
252b5132 2120 cache_ptr->addend = ad; \
252b5132 2121 } \
923f08ff
AM		 2122 else \
2123 { \
2124 /* Defined, section relative. Replace symbol with pointer to \
2125 symbol which points to section. */ \
2126 switch (r_index) \
2127 { \
2128 case N_TEXT: \
2129 case N_TEXT | N_EXT: \
2130 cache_ptr->sym_ptr_ptr = obj_textsec (abfd)->symbol_ptr_ptr; \
2131 cache_ptr->addend = ad - su->textsec->vma; \
2132 break; \
2133 case N_DATA: \
2134 case N_DATA | N_EXT: \
2135 cache_ptr->sym_ptr_ptr = obj_datasec (abfd)->symbol_ptr_ptr; \
2136 cache_ptr->addend = ad - su->datasec->vma; \
2137 break; \
2138 case N_BSS: \
2139 case N_BSS | N_EXT: \
2140 cache_ptr->sym_ptr_ptr = obj_bsssec (abfd)->symbol_ptr_ptr; \
2141 cache_ptr->addend = ad - su->bsssec->vma; \
2142 break; \
2143 default: \
2144 case N_ABS: \
2145 case N_ABS | N_EXT: \
2146 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \
2147 cache_ptr->addend = ad; \
2148 break; \
2149 } \
2150 }
252b5132
RH		 2151
2152void
116c20d2
NC		 2153NAME (aout, swap_ext_reloc_in) (bfd *abfd,
2154 struct reloc_ext_external *bytes,
2155 arelent *cache_ptr,
2156 asymbol **symbols,
2157 bfd_size_type symcount)
252b5132
RH		 2158{
2159 unsigned int r_index;
2160 int r_extern;
2161 unsigned int r_type;
2162 struct aoutdata *su = &(abfd->tdata.aout_data->a);
2163
2164 cache_ptr->address = (GET_SWORD (abfd, bytes->r_address));
2165
f7c33884 2166 /* Now the fun stuff. */
923f08ff
AM		 2167 if (bfd_header_big_endian (abfd))
2168 {
d45913a0
DA		 2169 r_index = (((unsigned int) bytes->r_index[0] << 16)
2170 | ((unsigned int) bytes->r_index[1] << 8)
923f08ff
AM		 2171 | bytes->r_index[2]);
2172 r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG));
2173 r_type = ((bytes->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
2174 >> RELOC_EXT_BITS_TYPE_SH_BIG);
2175 }
2176 else
2177 {
d45913a0
DA		 2178 r_index = (((unsigned int) bytes->r_index[2] << 16)
2179 | ((unsigned int) bytes->r_index[1] << 8)
923f08ff
AM		 2180 | bytes->r_index[0]);
2181 r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE));
2182 r_type = ((bytes->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
2183 >> RELOC_EXT_BITS_TYPE_SH_LITTLE);
2184 }
252b5132 2185
ad756e3f
AM		 2186 if (r_type < TABLE_SIZE (howto_table_ext))
2187 cache_ptr->howto = howto_table_ext + r_type;
2188 else
2189 cache_ptr->howto = NULL;
252b5132
RH		 2190
2191 /* Base relative relocs are always against the symbol table,
2192 regardless of the setting of r_extern. r_extern just reflects
2193 whether the symbol the reloc is against is local or global. */
d45913a0
DA		 2194 if (r_type == (unsigned int) RELOC_BASE10
2195 || r_type == (unsigned int) RELOC_BASE13
2196 || r_type == (unsigned int) RELOC_BASE22)
252b5132
RH		 2197 r_extern = 1;
2198
2199 if (r_extern && r_index > symcount)
2200 {
2201 /* We could arrange to return an error, but it might be useful
07d6d2b8 2202 to see the file even if it is bad. */
252b5132
RH		 2203 r_extern = 0;
2204 r_index = N_ABS;
2205 }
2206
923f08ff 2207 MOVE_ADDRESS (GET_SWORD (abfd, bytes->r_addend));
252b5132
RH		 2208}
2209
2210void
116c20d2
NC		 2211NAME (aout, swap_std_reloc_in) (bfd *abfd,
2212 struct reloc_std_external *bytes,
2213 arelent *cache_ptr,
2214 asymbol **symbols,
2215 bfd_size_type symcount)
252b5132
RH		 2216{
2217 unsigned int r_index;
2218 int r_extern;
2219 unsigned int r_length;
2220 int r_pcrel;
2221 int r_baserel, r_jmptable, r_relative;
2222 struct aoutdata *su = &(abfd->tdata.aout_data->a);
2223 unsigned int howto_idx;
2224
dc810e39 2225 cache_ptr->address = H_GET_32 (abfd, bytes->r_address);
252b5132 2226
f7c33884 2227 /* Now the fun stuff. */
923f08ff
AM		 2228 if (bfd_header_big_endian (abfd))
2229 {
d45913a0
DA		 2230 r_index = (((unsigned int) bytes->r_index[0] << 16)
2231 | ((unsigned int) bytes->r_index[1] << 8)
923f08ff
AM		 2232 | bytes->r_index[2]);
2233 r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
2234 r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
2235 r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_BIG));
2236 r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG));
2237 r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG));
2238 r_length = ((bytes->r_type[0] & RELOC_STD_BITS_LENGTH_BIG)
2239 >> RELOC_STD_BITS_LENGTH_SH_BIG);
2240 }
2241 else
2242 {
d45913a0
DA		 2243 r_index = (((unsigned int) bytes->r_index[2] << 16)
2244 | ((unsigned int) bytes->r_index[1] << 8)
923f08ff
AM		 2245 | bytes->r_index[0]);
2246 r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
2247 r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
2248 r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE));
2249 r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE));
2250 r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE));
2251 r_length = ((bytes->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE)
2252 >> RELOC_STD_BITS_LENGTH_SH_LITTLE);
2253 }
252b5132 2254
923f08ff
AM		 2255 howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel
2256 + 16 * r_jmptable + 32 * r_relative);
ad756e3f
AM		 2257 if (howto_idx < TABLE_SIZE (howto_table_std))
2258 {
2259 cache_ptr->howto = howto_table_std + howto_idx;
2260 if (cache_ptr->howto->type == (unsigned int) -1)
2261 cache_ptr->howto = NULL;
2262 }
2263 else
2264 cache_ptr->howto = NULL;
252b5132
RH		 2265
2266 /* Base relative relocs are always against the symbol table,
2267 regardless of the setting of r_extern. r_extern just reflects
2268 whether the symbol the reloc is against is local or global. */
2269 if (r_baserel)
2270 r_extern = 1;
2271
116acb2c 2272 if (r_extern && r_index >= symcount)
252b5132
RH		 2273 {
2274 /* We could arrange to return an error, but it might be useful
116acb2c
AM		 2275 to see the file even if it is bad. FIXME: Of course this
2276 means that objdump -r *doesn't* see the actual reloc, and
2277 objcopy silently writes a different reloc. */
252b5132
RH		 2278 r_extern = 0;
2279 r_index = N_ABS;
2280 }
2281
923f08ff 2282 MOVE_ADDRESS (0);
252b5132
RH		 2283}
2284
2285/* Read and swap the relocs for a section. */
2286
b34976b6 2287bfd_boolean
116c20d2 2288NAME (aout, slurp_reloc_table) (bfd *abfd, sec_ptr asect, asymbol **symbols)
252b5132 2289{
dc810e39 2290 bfd_size_type count;
252b5132 2291 bfd_size_type reloc_size;
116c20d2 2292 void * relocs;
252b5132
RH		 2293 arelent *reloc_cache;
2294 size_t each_size;
2295 unsigned int counter = 0;
2296 arelent *cache_ptr;
dc810e39 2297 bfd_size_type amt;
252b5132
RH		 2298
2299 if (asect->relocation)
b34976b6 2300 return TRUE;
252b5132
RH		 2301
2302 if (asect->flags & SEC_CONSTRUCTOR)
b34976b6 2303 return TRUE;
252b5132
RH		 2304
2305 if (asect == obj_datasec (abfd))
923f08ff 2306 reloc_size = exec_hdr (abfd)->a_drsize;
252b5132 2307 else if (asect == obj_textsec (abfd))
923f08ff 2308 reloc_size = exec_hdr (abfd)->a_trsize;
252b5132
RH		 2309 else if (asect == obj_bsssec (abfd))
2310 reloc_size = 0;
2311 else
2312 {
2313 bfd_set_error (bfd_error_invalid_operation);
b34976b6 2314 return FALSE;
252b5132
RH		 2315 }
2316
078c4bfc
MS		 2317 if (reloc_size == 0)
2318 return TRUE; /* Nothing to be done. */
2319
252b5132 2320 if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0)
b34976b6 2321 return FALSE;
252b5132
RH		 2322
2323 each_size = obj_reloc_entry_size (abfd);
2324
2325 count = reloc_size / each_size;
078c4bfc
MS		 2326 if (count == 0)
2327 return TRUE; /* Nothing to be done. */
252b5132 2328
dc810e39 2329 amt = count * sizeof (arelent);
a50b1753 2330 reloc_cache = (arelent *) bfd_zmalloc (amt);
078c4bfc 2331 if (reloc_cache == NULL)
b34976b6 2332 return FALSE;
252b5132 2333
dc810e39 2334 relocs = bfd_malloc (reloc_size);
078c4bfc 2335 if (relocs == NULL)
252b5132
RH		 2336 {
2337 free (reloc_cache);
b34976b6 2338 return FALSE;
252b5132
RH		 2339 }
2340
dc810e39 2341 if (bfd_bread (relocs, reloc_size, abfd) != reloc_size)
252b5132
RH		 2342 {
2343 free (relocs);
2344 free (reloc_cache);
b34976b6 2345 return FALSE;
252b5132
RH		 2346 }
2347
2348 cache_ptr = reloc_cache;
2349 if (each_size == RELOC_EXT_SIZE)
2350 {
dc810e39 2351 struct reloc_ext_external *rptr = (struct reloc_ext_external *) relocs;
252b5132
RH		 2352
2353 for (; counter < count; counter++, rptr++, cache_ptr++)
1642229e 2354 MY_swap_ext_reloc_in (abfd, rptr, cache_ptr, symbols,
dc810e39 2355 (bfd_size_type) bfd_get_symcount (abfd));
252b5132
RH		 2356 }
2357 else
2358 {
dc810e39 2359 struct reloc_std_external *rptr = (struct reloc_std_external *) relocs;
252b5132
RH		 2360
2361 for (; counter < count; counter++, rptr++, cache_ptr++)
2362 MY_swap_std_reloc_in (abfd, rptr, cache_ptr, symbols,
dc810e39 2363 (bfd_size_type) bfd_get_symcount (abfd));
252b5132
RH		 2364 }
2365
2366 free (relocs);
2367
2368 asect->relocation = reloc_cache;
2369 asect->reloc_count = cache_ptr - reloc_cache;
2370
b34976b6 2371 return TRUE;
252b5132
RH		 2372}
2373
2374/* Write out a relocation section into an object file. */
2375
b34976b6 2376bfd_boolean
116c20d2 2377NAME (aout, squirt_out_relocs) (bfd *abfd, asection *section)
252b5132
RH		 2378{
2379 arelent **generic;
2380 unsigned char *native, *natptr;
2381 size_t each_size;
2382
2383 unsigned int count = section->reloc_count;
dc810e39 2384 bfd_size_type natsize;
252b5132
RH		 2385
2386 if (count == 0 || section->orelocation == NULL)
b34976b6 2387 return TRUE;
252b5132
RH		 2388
2389 each_size = obj_reloc_entry_size (abfd);
dc810e39 2390 natsize = (bfd_size_type) each_size * count;
a50b1753 2391 native = (unsigned char *) bfd_zalloc (abfd, natsize);
252b5132 2392 if (!native)
b34976b6 2393 return FALSE;
252b5132
RH		 2394
2395 generic = section->orelocation;
2396
2397 if (each_size == RELOC_EXT_SIZE)
2398 {
2399 for (natptr = native;
2400 count != 0;
2401 --count, natptr += each_size, ++generic)
e2996cc3 2402 {
92744f05
NC		 2403 /* PR 20921: If the howto field has not been initialised then skip
2404 this reloc.
2405 PR 20929: Similarly for the symbol field. */
2406 if ((*generic)->howto == NULL
2407 || (*generic)->sym_ptr_ptr == NULL)
e2996cc3
NC		 2408 {
2409 bfd_set_error (bfd_error_invalid_operation);
92744f05 2410 _bfd_error_handler (_("\
871b3ab2 2411%pB: attempt to write out unknown reloc type"), abfd);
e2996cc3
NC		 2412 return FALSE;
2413 }
2414 MY_swap_ext_reloc_out (abfd, *generic,
2415 (struct reloc_ext_external *) natptr);
2416 }
252b5132
RH		 2417 }
2418 else
2419 {
2420 for (natptr = native;
2421 count != 0;
2422 --count, natptr += each_size, ++generic)
e2996cc3 2423 {
92744f05
NC		 2424 if ((*generic)->howto == NULL
2425 || (*generic)->sym_ptr_ptr == NULL)
e2996cc3
NC		 2426 {
2427 bfd_set_error (bfd_error_invalid_operation);
92744f05 2428 _bfd_error_handler (_("\
871b3ab2 2429%pB: attempt to write out unknown reloc type"), abfd);
e2996cc3
NC		 2430 return FALSE;
2431 }
2432 MY_swap_std_reloc_out (abfd, *generic,
2433 (struct reloc_std_external *) natptr);
2434 }
252b5132
RH		 2435 }
2436
116c20d2 2437 if (bfd_bwrite ((void *) native, natsize, abfd) != natsize)
dc810e39 2438 {
923f08ff 2439 bfd_release (abfd, native);
b34976b6 2440 return FALSE;
dc810e39 2441 }
252b5132
RH		 2442 bfd_release (abfd, native);
2443
b34976b6 2444 return TRUE;
252b5132
RH		 2445}
2446
f7c33884
NC		 2447/* This is stupid. This function should be a boolean predicate. */
2448
252b5132 2449long
116c20d2
NC		 2450NAME (aout, canonicalize_reloc) (bfd *abfd,
2451 sec_ptr section,
2452 arelent **relptr,
2453 asymbol **symbols)
252b5132
RH		 2454{
2455 arelent *tblptr = section->relocation;
2456 unsigned int count;
2457
2458 if (section == obj_bsssec (abfd))
2459 {
2460 *relptr = NULL;
2461 return 0;
2462 }
2463
116c20d2 2464 if (!(tblptr || NAME (aout, slurp_reloc_table) (abfd, section, symbols)))
252b5132
RH		 2465 return -1;
2466
923f08ff
AM		 2467 if (section->flags & SEC_CONSTRUCTOR)
2468 {
2469 arelent_chain *chain = section->constructor_chain;
2470 for (count = 0; count < section->reloc_count; count ++)
2471 {
2472 *relptr ++ = &chain->relent;
2473 chain = chain->next;
2474 }
252b5132 2475 }
923f08ff
AM		 2476 else
2477 {
2478 tblptr = section->relocation;
252b5132 2479
923f08ff
AM		 2480 for (count = 0; count++ < section->reloc_count; )
2481 {
2482 *relptr++ = tblptr++;
2483 }
2484 }
252b5132
RH		 2485 *relptr = 0;
2486
2487 return section->reloc_count;
2488}
2489
2490long
116c20d2 2491NAME (aout, get_reloc_upper_bound) (bfd *abfd, sec_ptr asect)
252b5132 2492{
923f08ff
AM		 2493 if (bfd_get_format (abfd) != bfd_object)
2494 {
2495 bfd_set_error (bfd_error_invalid_operation);
2496 return -1;
2497 }
f7c33884 2498
923f08ff 2499 if (asect->flags & SEC_CONSTRUCTOR)
116c20d2 2500 return sizeof (arelent *) * (asect->reloc_count + 1);
252b5132
RH		 2501
2502 if (asect == obj_datasec (abfd))
116c20d2
NC		 2503 return sizeof (arelent *)
2504 * ((exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd))
2505 + 1);
252b5132
RH		 2506
2507 if (asect == obj_textsec (abfd))
116c20d2
NC		 2508 return sizeof (arelent *)
2509 * ((exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd))
2510 + 1);
252b5132
RH		 2511
2512 if (asect == obj_bsssec (abfd))
2513 return sizeof (arelent *);
2514
2515 if (asect == obj_bsssec (abfd))
2516 return 0;
2517
2518 bfd_set_error (bfd_error_invalid_operation);
2519 return -1;
2520}
252b5132
RH		 2521\f
2522long
116c20d2 2523NAME (aout, get_symtab_upper_bound) (bfd *abfd)
252b5132 2524{
116c20d2 2525 if (!NAME (aout, slurp_symbol_table) (abfd))
252b5132
RH		 2526 return -1;
2527
2528 return (bfd_get_symcount (abfd)+1) * (sizeof (aout_symbol_type *));
2529}
2530
1725a96e 2531alent *
116c20d2
NC		 2532NAME (aout, get_lineno) (bfd *ignore_abfd ATTRIBUTE_UNUSED,
2533 asymbol *ignore_symbol ATTRIBUTE_UNUSED)
252b5132 2534{
116c20d2 2535 return NULL;
252b5132
RH		 2536}
2537
252b5132 2538void
116c20d2
NC		 2539NAME (aout, get_symbol_info) (bfd *ignore_abfd ATTRIBUTE_UNUSED,
2540 asymbol *symbol,
2541 symbol_info *ret)
252b5132
RH		 2542{
2543 bfd_symbol_info (symbol, ret);
2544
2545 if (ret->type == '?')
2546 {
923f08ff 2547 int type_code = aout_symbol (symbol)->type & 0xff;
252b5132
RH		 2548 const char *stab_name = bfd_get_stab_name (type_code);
2549 static char buf[10];
2550
2551 if (stab_name == NULL)
2552 {
e60b52c6 2553 sprintf (buf, "(%d)", type_code);
252b5132
RH		 2554 stab_name = buf;
2555 }
2556 ret->type = '-';
2557 ret->stab_type = type_code;
923f08ff
AM		 2558 ret->stab_other = (unsigned) (aout_symbol (symbol)->other & 0xff);
2559 ret->stab_desc = (unsigned) (aout_symbol (symbol)->desc & 0xffff);
252b5132
RH		 2560 ret->stab_name = stab_name;
2561 }
2562}
2563
252b5132 2564void
116c20d2
NC		 2565NAME (aout, print_symbol) (bfd *abfd,
2566 void * afile,
2567 asymbol *symbol,
2568 bfd_print_symbol_type how)
252b5132
RH		 2569{
2570 FILE *file = (FILE *)afile;
2571
923f08ff 2572 switch (how)
252b5132 2573 {
923f08ff
AM		 2574 case bfd_print_symbol_name:
2575 if (symbol->name)
2576 fprintf (file,"%s", symbol->name);
2577 break;
2578 case bfd_print_symbol_more:
2579 fprintf (file,"%4x %2x %2x",
2580 (unsigned) (aout_symbol (symbol)->desc & 0xffff),
2581 (unsigned) (aout_symbol (symbol)->other & 0xff),
2582 (unsigned) (aout_symbol (symbol)->type));
2583 break;
2584 case bfd_print_symbol_all:
2585 {
2586 const char *section_name = symbol->section->name;
252b5132 2587
116c20d2 2588 bfd_print_symbol_vandf (abfd, (void *)file, symbol);
252b5132 2589
923f08ff
AM		 2590 fprintf (file," %-5s %04x %02x %02x",
2591 section_name,
2592 (unsigned) (aout_symbol (symbol)->desc & 0xffff),
2593 (unsigned) (aout_symbol (symbol)->other & 0xff),
2594 (unsigned) (aout_symbol (symbol)->type & 0xff));
2595 if (symbol->name)
2596 fprintf (file," %s", symbol->name);
2597 }
2598 break;
252b5132 2599 }
252b5132
RH		 2600}
2601
2602/* If we don't have to allocate more than 1MB to hold the generic
2603 symbols, we use the generic minisymbol methord: it's faster, since
2604 it only translates the symbols once, not multiple times. */
2605#define MINISYM_THRESHOLD (1000000 / sizeof (asymbol))
2606
2607/* Read minisymbols. For minisymbols, we use the unmodified a.out
2608 symbols. The minisymbol_to_symbol function translates these into
2609 BFD asymbol structures. */
2610
2611long
116c20d2
NC		 2612NAME (aout, read_minisymbols) (bfd *abfd,
2613 bfd_boolean dynamic,
2614 void * *minisymsp,
2615 unsigned int *sizep)
252b5132
RH		 2616{
2617 if (dynamic)
116c20d2
NC		 2618 /* We could handle the dynamic symbols here as well, but it's
2619 easier to hand them off. */
2620 return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep);
252b5132
RH		 2621
2622 if (! aout_get_external_symbols (abfd))
2623 return -1;
2624
2625 if (obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD)
2626 return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep);
2627
116c20d2 2628 *minisymsp = (void *) obj_aout_external_syms (abfd);
252b5132
RH		 2629
2630 /* By passing the external symbols back from this routine, we are
2631 giving up control over the memory block. Clear
2632 obj_aout_external_syms, so that we do not try to free it
2633 ourselves. */
2634 obj_aout_external_syms (abfd) = NULL;
2635
2636 *sizep = EXTERNAL_NLIST_SIZE;
2637 return obj_aout_external_sym_count (abfd);
2638}
2639
2640/* Convert a minisymbol to a BFD asymbol. A minisymbol is just an
2641 unmodified a.out symbol. The SYM argument is a structure returned
2642 by bfd_make_empty_symbol, which we fill in here. */
2643
2644asymbol *
116c20d2
NC		 2645NAME (aout, minisymbol_to_symbol) (bfd *abfd,
2646 bfd_boolean dynamic,
2647 const void * minisym,
2648 asymbol *sym)
252b5132
RH		 2649{
2650 if (dynamic
2651 || obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD)
2652 return _bfd_generic_minisymbol_to_symbol (abfd, dynamic, minisym, sym);
2653
2654 memset (sym, 0, sizeof (aout_symbol_type));
2655
2656 /* We call translate_symbol_table to translate a single symbol. */
116c20d2 2657 if (! (NAME (aout, translate_symbol_table)
252b5132
RH		 2658 (abfd,
2659 (aout_symbol_type *) sym,
2660 (struct external_nlist *) minisym,
2661 (bfd_size_type) 1,
2662 obj_aout_external_strings (abfd),
2663 obj_aout_external_string_size (abfd),
b34976b6 2664 FALSE)))
252b5132
RH		 2665 return NULL;
2666
2667 return sym;
2668}
2669
f7c33884
NC		 2670/* Provided a BFD, a section and an offset into the section, calculate
2671 and return the name of the source file and the line nearest to the
2672 wanted location. */
252b5132 2673
b34976b6 2674bfd_boolean
116c20d2 2675NAME (aout, find_nearest_line) (bfd *abfd,
116c20d2 2676 asymbol **symbols,
fb167eb2 2677 asection *section,
116c20d2
NC		 2678 bfd_vma offset,
2679 const char **filename_ptr,
2680 const char **functionname_ptr,
fb167eb2
AM		 2681 unsigned int *line_ptr,
2682 unsigned int *disriminator_ptr)
252b5132 2683{
f7c33884 2684 /* Run down the file looking for the filename, function and linenumber. */
252b5132 2685 asymbol **p;
dc810e39
AM		 2686 const char *directory_name = NULL;
2687 const char *main_file_name = NULL;
2688 const char *current_file_name = NULL;
116c20d2 2689 const char *line_file_name = NULL; /* Value of current_file_name at line number. */
dc810e39 2690 const char *line_directory_name = NULL; /* Value of directory_name at line number. */
252b5132
RH		 2691 bfd_vma low_line_vma = 0;
2692 bfd_vma low_func_vma = 0;
2693 asymbol *func = 0;
dc810e39 2694 bfd_size_type filelen, funclen;
252b5132
RH		 2695 char *buf;
2696
2697 *filename_ptr = abfd->filename;
50455f1a 2698 *functionname_ptr = NULL;
252b5132 2699 *line_ptr = 0;
fb167eb2
AM		 2700 if (disriminator_ptr)
2701 *disriminator_ptr = 0;
f7c33884 2702
116c20d2 2703 if (symbols != NULL)
923f08ff
AM		 2704 {
2705 for (p = symbols; *p; p++)
2706 {
2707 aout_symbol_type *q = (aout_symbol_type *) (*p);
2708 next:
2709 switch (q->type)
2710 {
2711 case N_TEXT:
2712 /* If this looks like a file name symbol, and it comes after
2713 the line number we have found so far, but before the
2714 offset, then we have probably not found the right line
2715 number. */
2716 if (q->symbol.value <= offset
2717 && ((q->symbol.value > low_line_vma
2718 && (line_file_name != NULL
2719 || *line_ptr != 0))
2720 || (q->symbol.value > low_func_vma
2721 && func != NULL)))
2722 {
2723 const char *symname;
252b5132 2724
923f08ff 2725 symname = q->symbol.name;
808346fc
NC		 2726
2727 if (symname != NULL
2728 && strlen (symname) > 2
2729 && strcmp (symname + strlen (symname) - 2, ".o") == 0)
923f08ff
AM		 2730 {
2731 if (q->symbol.value > low_line_vma)
2732 {
2733 *line_ptr = 0;
2734 line_file_name = NULL;
2735 }
2736 if (q->symbol.value > low_func_vma)
2737 func = NULL;
2738 }
2739 }
2740 break;
252b5132 2741
923f08ff
AM		 2742 case N_SO:
2743 /* If this symbol is less than the offset, but greater than
2744 the line number we have found so far, then we have not
2745 found the right line number. */
2746 if (q->symbol.value <= offset)
2747 {
2748 if (q->symbol.value > low_line_vma)
2749 {
2750 *line_ptr = 0;
2751 line_file_name = NULL;
2752 }
2753 if (q->symbol.value > low_func_vma)
2754 func = NULL;
2755 }
252b5132 2756
923f08ff
AM		 2757 main_file_name = current_file_name = q->symbol.name;
2758 /* Look ahead to next symbol to check if that too is an N_SO. */
2759 p++;
2760 if (*p == NULL)
c3864421 2761 goto done;
923f08ff
AM		 2762 q = (aout_symbol_type *) (*p);
2763 if (q->type != (int)N_SO)
2764 goto next;
2765
2766 /* Found a second N_SO First is directory; second is filename. */
2767 directory_name = current_file_name;
2768 main_file_name = current_file_name = q->symbol.name;
2769 if (obj_textsec (abfd) != section)
2770 goto done;
2771 break;
2772 case N_SOL:
2773 current_file_name = q->symbol.name;
2774 break;
252b5132 2775
923f08ff 2776 case N_SLINE:
252b5132 2777
923f08ff
AM		 2778 case N_DSLINE:
2779 case N_BSLINE:
2780 /* We'll keep this if it resolves nearer than the one we have
2781 already. */
2782 if (q->symbol.value >= low_line_vma
2783 && q->symbol.value <= offset)
2784 {
2785 *line_ptr = q->desc;
2786 low_line_vma = q->symbol.value;
2787 line_file_name = current_file_name;
2788 line_directory_name = directory_name;
2789 }
2790 break;
2791 case N_FUN:
2792 {
f7c33884 2793 /* We'll keep this if it is nearer than the one we have already. */
808346fc
NC		 2794 if (q->symbol.value >= low_func_vma
2795 && q->symbol.value <= offset)
f7c33884
NC		 2796 {
2797 low_func_vma = q->symbol.value;
2798 func = (asymbol *)q;
2799 }
923f08ff
AM		 2800 else if (q->symbol.value > offset)
2801 goto done;
2802 }
2803 break;
2804 }
252b5132 2805 }
252b5132 2806 }
252b5132
RH		 2807
2808 done:
2809 if (*line_ptr != 0)
2810 {
2811 main_file_name = line_file_name;
2812 directory_name = line_directory_name;
2813 }
2814
2815 if (main_file_name == NULL
5af11cab 2816 || IS_ABSOLUTE_PATH (main_file_name)
252b5132
RH		 2817 || directory_name == NULL)
2818 filelen = 0;
2819 else
2820 filelen = strlen (directory_name) + strlen (main_file_name);
f7c33884 2821
252b5132
RH		 2822 if (func == NULL)
2823 funclen = 0;
2824 else
2825 funclen = strlen (bfd_asymbol_name (func));
2826
2827 if (adata (abfd).line_buf != NULL)
2828 free (adata (abfd).line_buf);
f7c33884 2829
252b5132
RH		 2830 if (filelen + funclen == 0)
2831 adata (abfd).line_buf = buf = NULL;
2832 else
2833 {
a50b1753 2834 buf = (char *) bfd_malloc (filelen + funclen + 3);
252b5132
RH		 2835 adata (abfd).line_buf = buf;
2836 if (buf == NULL)
b34976b6 2837 return FALSE;
252b5132
RH		 2838 }
2839
2840 if (main_file_name != NULL)
2841 {
5af11cab 2842 if (IS_ABSOLUTE_PATH (main_file_name) || directory_name == NULL)
252b5132
RH		 2843 *filename_ptr = main_file_name;
2844 else
2845 {
50455f1a
NC		 2846 if (buf == NULL)
2847 /* PR binutils/20891: In a corrupt input file both
2848 main_file_name and directory_name can be empty... */
2849 * filename_ptr = NULL;
2850 else
2851 {
2852 snprintf (buf, filelen + 1, "%s%s", directory_name,
2853 main_file_name);
2854 *filename_ptr = buf;
2855 buf += filelen + 1;
2856 }
252b5132
RH		 2857 }
2858 }
2859
2860 if (func)
2861 {
2862 const char *function = func->name;
dc810e39 2863 char *colon;
252b5132 2864
e82ab856
NC		 2865 if (buf == NULL)
2866 {
2867 /* PR binutils/20892: In a corrupt input file func can be empty. */
2868 * functionname_ptr = NULL;
2869 return TRUE;
2870 }
252b5132
RH		 2871 /* The caller expects a symbol name. We actually have a
2872 function name, without the leading underscore. Put the
2873 underscore back in, so that the caller gets a symbol name. */
2874 if (bfd_get_symbol_leading_char (abfd) == '\0')
2875 strcpy (buf, function);
2876 else
2877 {
2878 buf[0] = bfd_get_symbol_leading_char (abfd);
2879 strcpy (buf + 1, function);
2880 }
f7c33884 2881 /* Have to remove : stuff. */
dc810e39
AM		 2882 colon = strchr (buf, ':');
2883 if (colon != NULL)
2884 *colon = '\0';
252b5132
RH		 2885 *functionname_ptr = buf;
2886 }
2887
b34976b6 2888 return TRUE;
252b5132
RH		 2889}
2890
252b5132 2891int
a6b96beb
AM		 2892NAME (aout, sizeof_headers) (bfd *abfd,
2893 struct bfd_link_info *info ATTRIBUTE_UNUSED)
252b5132 2894{
923f08ff 2895 return adata (abfd).exec_bytes_size;
252b5132
RH		 2896}
2897
2898/* Free all information we have cached for this BFD. We can always
2899 read it again later if we need it. */
2900
b34976b6 2901bfd_boolean
116c20d2 2902NAME (aout, bfd_free_cached_info) (bfd *abfd)
252b5132
RH		 2903{
2904 asection *o;
2905
920581c5
L		 2906 if (bfd_get_format (abfd) != bfd_object
2907 || abfd->tdata.aout_data == NULL)
b34976b6 2908 return TRUE;
252b5132
RH		 2909
2910#define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; }
2911 BFCI_FREE (obj_aout_symbols (abfd));
2912#ifdef USE_MMAP
2913 obj_aout_external_syms (abfd) = 0;
2914 bfd_free_window (&obj_aout_sym_window (abfd));
2915 bfd_free_window (&obj_aout_string_window (abfd));
2916 obj_aout_external_strings (abfd) = 0;
2917#else
2918 BFCI_FREE (obj_aout_external_syms (abfd));
2919 BFCI_FREE (obj_aout_external_strings (abfd));
2920#endif
116c20d2 2921 for (o = abfd->sections; o != NULL; o = o->next)
252b5132
RH		 2922 BFCI_FREE (o->relocation);
2923#undef BFCI_FREE
2924
b34976b6 2925 return TRUE;
252b5132
RH		 2926}
2927\f
2928/* a.out link code. */
2929
252b5132
RH		 2930/* Routine to create an entry in an a.out link hash table. */
2931
2932struct bfd_hash_entry *
116c20d2
NC		 2933NAME (aout, link_hash_newfunc) (struct bfd_hash_entry *entry,
2934 struct bfd_hash_table *table,
2935 const char *string)
252b5132
RH		 2936{
2937 struct aout_link_hash_entry *ret = (struct aout_link_hash_entry *) entry;
2938
2939 /* Allocate the structure if it has not already been allocated by a
2940 subclass. */
116c20d2 2941 if (ret == NULL)
a50b1753 2942 ret = (struct aout_link_hash_entry *) bfd_hash_allocate (table,
07d6d2b8 2943 sizeof (* ret));
116c20d2
NC		 2944 if (ret == NULL)
2945 return NULL;
252b5132
RH		 2946
2947 /* Call the allocation method of the superclass. */
2948 ret = ((struct aout_link_hash_entry *)
2949 _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2950 table, string));
2951 if (ret)
2952 {
2953 /* Set local fields. */
b34976b6 2954 ret->written = FALSE;
252b5132
RH		 2955 ret->indx = -1;
2956 }
2957
2958 return (struct bfd_hash_entry *) ret;
2959}
2960
2961/* Initialize an a.out link hash table. */
2962
b34976b6 2963bfd_boolean
116c20d2
NC		 2964NAME (aout, link_hash_table_init) (struct aout_link_hash_table *table,
2965 bfd *abfd,
2966 struct bfd_hash_entry *(*newfunc)
2967 (struct bfd_hash_entry *, struct bfd_hash_table *,
66eb6687
AM		 2968 const char *),
2969 unsigned int entsize)
252b5132 2970{
66eb6687 2971 return _bfd_link_hash_table_init (&table->root, abfd, newfunc, entsize);
252b5132
RH		 2972}
2973
2974/* Create an a.out link hash table. */
2975
2976struct bfd_link_hash_table *
116c20d2 2977NAME (aout, link_hash_table_create) (bfd *abfd)
252b5132
RH		 2978{
2979 struct aout_link_hash_table *ret;
116c20d2 2980 bfd_size_type amt = sizeof (* ret);
252b5132 2981
a50b1753 2982 ret = (struct aout_link_hash_table *) bfd_malloc (amt);
252b5132 2983 if (ret == NULL)
116c20d2 2984 return NULL;
5ed6aba4 2985
66eb6687
AM		 2986 if (!NAME (aout, link_hash_table_init) (ret, abfd,
2987 NAME (aout, link_hash_newfunc),
2988 sizeof (struct aout_link_hash_entry)))
252b5132
RH		 2989 {
2990 free (ret);
116c20d2 2991 return NULL;
252b5132
RH		 2992 }
2993 return &ret->root;
2994}
2995
116c20d2 2996/* Add all symbols from an object file to the hash table. */
252b5132 2997
b34976b6 2998static bfd_boolean
116c20d2 2999aout_link_add_symbols (bfd *abfd, struct bfd_link_info *info)
252b5132 3000{
116c20d2
NC		 3001 bfd_boolean (*add_one_symbol)
3002 (struct bfd_link_info *, bfd *, const char *, flagword, asection *,
3003 bfd_vma, const char *, bfd_boolean, bfd_boolean,
3004 struct bfd_link_hash_entry **);
3005 struct external_nlist *syms;
3006 bfd_size_type sym_count;
3007 char *strings;
3008 bfd_boolean copy;
3009 struct aout_link_hash_entry **sym_hash;
3010 struct external_nlist *p;
3011 struct external_nlist *pend;
3012 bfd_size_type amt;
252b5132 3013
116c20d2
NC		 3014 syms = obj_aout_external_syms (abfd);
3015 sym_count = obj_aout_external_sym_count (abfd);
3016 strings = obj_aout_external_strings (abfd);
3017 if (info->keep_memory)
3018 copy = FALSE;
3019 else
3020 copy = TRUE;
252b5132 3021
116c20d2 3022 if (aout_backend_info (abfd)->add_dynamic_symbols != NULL)
252b5132 3023 {
116c20d2
NC		 3024 if (! ((*aout_backend_info (abfd)->add_dynamic_symbols)
3025 (abfd, info, &syms, &sym_count, &strings)))
b34976b6 3026 return FALSE;
252b5132
RH		 3027 }
3028
20c6e70e
MS		 3029 if (sym_count == 0)
3030 return TRUE; /* Nothing to do. */
3031
116c20d2
NC		 3032 /* We keep a list of the linker hash table entries that correspond
3033 to particular symbols. We could just look them up in the hash
3034 table, but keeping the list is more efficient. Perhaps this
3035 should be conditional on info->keep_memory. */
3036 amt = sym_count * sizeof (struct aout_link_hash_entry *);
a50b1753 3037 sym_hash = (struct aout_link_hash_entry **) bfd_alloc (abfd, amt);
20c6e70e 3038 if (sym_hash == NULL)
116c20d2
NC		 3039 return FALSE;
3040 obj_aout_sym_hashes (abfd) = sym_hash;
252b5132 3041
116c20d2
NC		 3042 add_one_symbol = aout_backend_info (abfd)->add_one_symbol;
3043 if (add_one_symbol == NULL)
3044 add_one_symbol = _bfd_generic_link_add_one_symbol;
252b5132 3045
116c20d2
NC		 3046 p = syms;
3047 pend = p + sym_count;
3048 for (; p < pend; p++, sym_hash++)
252b5132 3049 {
116c20d2 3050 int type;
252b5132 3051 const char *name;
116c20d2
NC		 3052 bfd_vma value;
3053 asection *section;
3054 flagword flags;
3055 const char *string;
252b5132 3056
116c20d2 3057 *sym_hash = NULL;
252b5132 3058
116c20d2 3059 type = H_GET_8 (abfd, p->e_type);
252b5132 3060
116c20d2
NC		 3061 /* Ignore debugging symbols. */
3062 if ((type & N_STAB) != 0)
3063 continue;
252b5132 3064
e517df3d 3065 /* PR 19629: Corrupt binaries can contain illegal string offsets. */
531336e3 3066 if (GET_WORD (abfd, p->e_strx) >= obj_aout_external_string_size (abfd))
e517df3d 3067 return FALSE;
116c20d2
NC		 3068 name = strings + GET_WORD (abfd, p->e_strx);
3069 value = GET_WORD (abfd, p->e_value);
3070 flags = BSF_GLOBAL;
3071 string = NULL;
3072 switch (type)
252b5132 3073 {
116c20d2
NC		 3074 default:
3075 abort ();
f7c33884 3076
116c20d2
NC		 3077 case N_UNDF:
3078 case N_ABS:
3079 case N_TEXT:
3080 case N_DATA:
3081 case N_BSS:
3082 case N_FN_SEQ:
3083 case N_COMM:
3084 case N_SETV:
3085 case N_FN:
3086 /* Ignore symbols that are not externally visible. */
3087 continue;
3088 case N_INDR:
3089 /* Ignore local indirect symbol. */
3090 ++p;
3091 ++sym_hash;
3092 continue;
252b5132 3093
116c20d2
NC		 3094 case N_UNDF | N_EXT:
3095 if (value == 0)
f7c33884 3096 {
116c20d2
NC		 3097 section = bfd_und_section_ptr;
3098 flags = 0;
252b5132
RH		 3099 }
3100 else
3101 section = bfd_com_section_ptr;
3102 break;
3103 case N_ABS | N_EXT:
3104 section = bfd_abs_section_ptr;
3105 break;
3106 case N_TEXT | N_EXT:
3107 section = obj_textsec (abfd);
3108 value -= bfd_get_section_vma (abfd, section);
3109 break;
3110 case N_DATA | N_EXT:
3111 case N_SETV | N_EXT:
3112 /* Treat N_SETV symbols as N_DATA symbol; see comment in
3113 translate_from_native_sym_flags. */
3114 section = obj_datasec (abfd);
3115 value -= bfd_get_section_vma (abfd, section);
3116 break;
3117 case N_BSS | N_EXT:
3118 section = obj_bsssec (abfd);
3119 value -= bfd_get_section_vma (abfd, section);
3120 break;
3121 case N_INDR | N_EXT:
3122 /* An indirect symbol. The next symbol is the symbol
3123 which this one really is. */
39d4daf6
NC		 3124 /* See PR 20925 for a reproducer. */
3125 if (p + 1 >= pend)
3126 return FALSE;
252b5132 3127 ++p;
e517df3d 3128 /* PR 19629: Corrupt binaries can contain illegal string offsets. */
daae68f4 3129 if (GET_WORD (abfd, p->e_strx) >= obj_aout_external_string_size (abfd))
e517df3d 3130 return FALSE;
252b5132
RH		 3131 string = strings + GET_WORD (abfd, p->e_strx);
3132 section = bfd_ind_section_ptr;
3133 flags |= BSF_INDIRECT;
3134 break;
3135 case N_COMM | N_EXT:
3136 section = bfd_com_section_ptr;
3137 break;
3138 case N_SETA: case N_SETA | N_EXT:
3139 section = bfd_abs_section_ptr;
3140 flags |= BSF_CONSTRUCTOR;
3141 break;
3142 case N_SETT: case N_SETT | N_EXT:
3143 section = obj_textsec (abfd);
3144 flags |= BSF_CONSTRUCTOR;
3145 value -= bfd_get_section_vma (abfd, section);
3146 break;
3147 case N_SETD: case N_SETD | N_EXT:
3148 section = obj_datasec (abfd);
3149 flags |= BSF_CONSTRUCTOR;
3150 value -= bfd_get_section_vma (abfd, section);
3151 break;
3152 case N_SETB: case N_SETB | N_EXT:
3153 section = obj_bsssec (abfd);
3154 flags |= BSF_CONSTRUCTOR;
3155 value -= bfd_get_section_vma (abfd, section);
3156 break;
3157 case N_WARNING:
3158 /* A warning symbol. The next symbol is the one to warn
9f400ee9
HPN		 3159 about. If there is no next symbol, just look away. */
3160 if (p + 1 >= pend)
3161 return TRUE;
252b5132
RH		 3162 ++p;
3163 string = name;
e517df3d 3164 /* PR 19629: Corrupt binaries can contain illegal string offsets. */
daae68f4 3165 if (GET_WORD (abfd, p->e_strx) >= obj_aout_external_string_size (abfd))
e517df3d 3166 return FALSE;
252b5132
RH		 3167 name = strings + GET_WORD (abfd, p->e_strx);
3168 section = bfd_und_section_ptr;
3169 flags |= BSF_WARNING;
3170 break;
3171 case N_WEAKU:
3172 section = bfd_und_section_ptr;
3173 flags = BSF_WEAK;
3174 break;
3175 case N_WEAKA:
3176 section = bfd_abs_section_ptr;
3177 flags = BSF_WEAK;
3178 break;
3179 case N_WEAKT:
3180 section = obj_textsec (abfd);
3181 value -= bfd_get_section_vma (abfd, section);
3182 flags = BSF_WEAK;
3183 break;
3184 case N_WEAKD:
3185 section = obj_datasec (abfd);
3186 value -= bfd_get_section_vma (abfd, section);
3187 flags = BSF_WEAK;
3188 break;
3189 case N_WEAKB:
3190 section = obj_bsssec (abfd);
3191 value -= bfd_get_section_vma (abfd, section);
3192 flags = BSF_WEAK;
3193 break;
3194 }
3195
3196 if (! ((*add_one_symbol)
b34976b6 3197 (info, abfd, name, flags, section, value, string, copy, FALSE,
252b5132 3198 (struct bfd_link_hash_entry **) sym_hash)))
b34976b6 3199 return FALSE;
252b5132
RH		 3200
3201 /* Restrict the maximum alignment of a common symbol based on
3202 the architecture, since a.out has no way to represent
3203 alignment requirements of a section in a .o file. FIXME:
3204 This isn't quite right: it should use the architecture of the
3205 output file, not the input files. */
3206 if ((*sym_hash)->root.type == bfd_link_hash_common
3207 && ((*sym_hash)->root.u.c.p->alignment_power >
3208 bfd_get_arch_info (abfd)->section_align_power))
3209 (*sym_hash)->root.u.c.p->alignment_power =
3210 bfd_get_arch_info (abfd)->section_align_power;
3211
3212 /* If this is a set symbol, and we are not building sets, then
3213 it is possible for the hash entry to not have been set. In
3214 such a case, treat the symbol as not globally defined. */
3215 if ((*sym_hash)->root.type == bfd_link_hash_new)
3216 {
3217 BFD_ASSERT ((flags & BSF_CONSTRUCTOR) != 0);
3218 *sym_hash = NULL;
3219 }
3220
3221 if (type == (N_INDR | N_EXT) || type == N_WARNING)
3222 ++sym_hash;
3223 }
3224
b34976b6 3225 return TRUE;
252b5132 3226}
252b5132 3227
116c20d2
NC		 3228/* Free up the internal symbols read from an a.out file. */
3229
3230static bfd_boolean
3231aout_link_free_symbols (bfd *abfd)
252b5132 3232{
116c20d2
NC		 3233 if (obj_aout_external_syms (abfd) != NULL)
3234 {
3235#ifdef USE_MMAP
3236 bfd_free_window (&obj_aout_sym_window (abfd));
3237#else
3238 free ((void *) obj_aout_external_syms (abfd));
3239#endif
3240 obj_aout_external_syms (abfd) = NULL;
3241 }
3242 if (obj_aout_external_strings (abfd) != NULL)
3243 {
3244#ifdef USE_MMAP
3245 bfd_free_window (&obj_aout_string_window (abfd));
3246#else
3247 free ((void *) obj_aout_external_strings (abfd));
3248#endif
3249 obj_aout_external_strings (abfd) = NULL;
3250 }
3251 return TRUE;
3252}
252b5132 3253
116c20d2 3254/* Add symbols from an a.out object file. */
252b5132 3255
116c20d2
NC		 3256static bfd_boolean
3257aout_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info)
252b5132 3258{
116c20d2
NC		 3259 if (! aout_get_external_symbols (abfd))
3260 return FALSE;
3261 if (! aout_link_add_symbols (abfd, info))
3262 return FALSE;
3263 if (! info->keep_memory)
3264 {
3265 if (! aout_link_free_symbols (abfd))
3266 return FALSE;
3267 }
3268 return TRUE;
3269}
252b5132 3270
116c20d2
NC		 3271/* Look through the internal symbols to see if this object file should
3272 be included in the link. We should include this object file if it
3273 defines any symbols which are currently undefined. If this object
3274 file defines a common symbol, then we may adjust the size of the
3275 known symbol but we do not include the object file in the link
3276 (unless there is some other reason to include it). */
252b5132 3277
116c20d2
NC		 3278static bfd_boolean
3279aout_link_check_ar_symbols (bfd *abfd,
3280 struct bfd_link_info *info,
5d3236ee
DK		 3281 bfd_boolean *pneeded,
3282 bfd **subsbfd)
252b5132 3283{
116c20d2
NC		 3284 struct external_nlist *p;
3285 struct external_nlist *pend;
3286 char *strings;
252b5132 3287
116c20d2 3288 *pneeded = FALSE;
252b5132 3289
116c20d2
NC		 3290 /* Look through all the symbols. */
3291 p = obj_aout_external_syms (abfd);
3292 pend = p + obj_aout_external_sym_count (abfd);
3293 strings = obj_aout_external_strings (abfd);
3294 for (; p < pend; p++)
3295 {
3296 int type = H_GET_8 (abfd, p->e_type);
3297 const char *name;
3298 struct bfd_link_hash_entry *h;
252b5132 3299
116c20d2
NC		 3300 /* Ignore symbols that are not externally visible. This is an
3301 optimization only, as we check the type more thoroughly
3302 below. */
3303 if (((type & N_EXT) == 0
3304 || (type & N_STAB) != 0
3305 || type == N_FN)
3306 && type != N_WEAKA
3307 && type != N_WEAKT
3308 && type != N_WEAKD
3309 && type != N_WEAKB)
3310 {
3311 if (type == N_WARNING
3312 || type == N_INDR)
3313 ++p;
3314 continue;
3315 }
3316
3317 name = strings + GET_WORD (abfd, p->e_strx);
3318 h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE);
3319
3320 /* We are only interested in symbols that are currently
3321 undefined or common. */
3322 if (h == NULL
3323 || (h->type != bfd_link_hash_undefined
3324 && h->type != bfd_link_hash_common))
3325 {
3326 if (type == (N_INDR | N_EXT))
3327 ++p;
3328 continue;
3329 }
3330
3331 if (type == (N_TEXT | N_EXT)
3332 || type == (N_DATA | N_EXT)
3333 || type == (N_BSS | N_EXT)
3334 || type == (N_ABS | N_EXT)
3335 || type == (N_INDR | N_EXT))
3336 {
3337 /* This object file defines this symbol. We must link it
3338 in. This is true regardless of whether the current
3339 definition of the symbol is undefined or common.
3340
07d6d2b8 3341 If the current definition is common, we have a case in
116c20d2 3342 which we have already seen an object file including:
07d6d2b8 3343 int a;
116c20d2 3344 and this object file from the archive includes:
07d6d2b8 3345 int a = 5;
116c20d2 3346 In such a case, whether to include this object is target
07d6d2b8 3347 dependant for backward compatibility.
116c20d2
NC		 3348
3349 FIXME: The SunOS 4.1.3 linker will pull in the archive
3350 element if the symbol is defined in the .data section,
3351 but not if it is defined in the .text section. That
3352 seems a bit crazy to me, and it has not been implemented
3353 yet. However, it might be correct. */
3354 if (h->type == bfd_link_hash_common)
3355 {
3356 int skip = 0;
3357
f88dc410 3358 switch (info->common_skip_ar_symbols)
116c20d2 3359 {
a78eea16
AM		 3360 case bfd_link_common_skip_none:
3361 break;
116c20d2
NC		 3362 case bfd_link_common_skip_text:
3363 skip = (type == (N_TEXT | N_EXT));
3364 break;
3365 case bfd_link_common_skip_data:
3366 skip = (type == (N_DATA | N_EXT));
3367 break;
116c20d2
NC		 3368 case bfd_link_common_skip_all:
3369 skip = 1;
3370 break;
3371 }
3372
3373 if (skip)
3374 continue;
3375 }
3376
0e144ba7
AM		 3377 if (!(*info->callbacks
3378 ->add_archive_element) (info, abfd, name, subsbfd))
116c20d2
NC		 3379 return FALSE;
3380 *pneeded = TRUE;
3381 return TRUE;
3382 }
3383
3384 if (type == (N_UNDF | N_EXT))
3385 {
3386 bfd_vma value;
3387
3388 value = GET_WORD (abfd, p->e_value);
3389 if (value != 0)
3390 {
3391 /* This symbol is common in the object from the archive
3392 file. */
3393 if (h->type == bfd_link_hash_undefined)
3394 {
3395 bfd *symbfd;
3396 unsigned int power;
3397
3398 symbfd = h->u.undef.abfd;
3399 if (symbfd == NULL)
3400 {
3401 /* This symbol was created as undefined from
3402 outside BFD. We assume that we should link
3403 in the object file. This is done for the -u
3404 option in the linker. */
0e144ba7
AM		 3405 if (!(*info->callbacks
3406 ->add_archive_element) (info, abfd, name, subsbfd))
116c20d2
NC		 3407 return FALSE;
3408 *pneeded = TRUE;
3409 return TRUE;
3410 }
3411 /* Turn the current link symbol into a common
3412 symbol. It is already on the undefs list. */
3413 h->type = bfd_link_hash_common;
a50b1753 3414 h->u.c.p = (struct bfd_link_hash_common_entry *)
0e144ba7
AM		 3415 bfd_hash_allocate (&info->hash->table,
3416 sizeof (struct bfd_link_hash_common_entry));
116c20d2
NC		 3417 if (h->u.c.p == NULL)
3418 return FALSE;
3419
3420 h->u.c.size = value;
3421
3422 /* FIXME: This isn't quite right. The maximum
3423 alignment of a common symbol should be set by the
3424 architecture of the output file, not of the input
3425 file. */
3426 power = bfd_log2 (value);
3427 if (power > bfd_get_arch_info (abfd)->section_align_power)
3428 power = bfd_get_arch_info (abfd)->section_align_power;
3429 h->u.c.p->alignment_power = power;
3430
3431 h->u.c.p->section = bfd_make_section_old_way (symbfd,
3432 "COMMON");
3433 }
3434 else
3435 {
3436 /* Adjust the size of the common symbol if
3437 necessary. */
3438 if (value > h->u.c.size)
3439 h->u.c.size = value;
3440 }
3441 }
3442 }
3443
3444 if (type == N_WEAKA
3445 || type == N_WEAKT
3446 || type == N_WEAKD
3447 || type == N_WEAKB)
3448 {
3449 /* This symbol is weak but defined. We must pull it in if
3450 the current link symbol is undefined, but we don't want
3451 it if the current link symbol is common. */
3452 if (h->type == bfd_link_hash_undefined)
3453 {
0e144ba7
AM		 3454 if (!(*info->callbacks
3455 ->add_archive_element) (info, abfd, name, subsbfd))
116c20d2
NC		 3456 return FALSE;
3457 *pneeded = TRUE;
3458 return TRUE;
3459 }
3460 }
3461 }
3462
3463 /* We do not need this object file. */
3464 return TRUE;
3465}
3466/* Check a single archive element to see if we need to include it in
3467 the link. *PNEEDED is set according to whether this element is
3468 needed in the link or not. This is called from
3469 _bfd_generic_link_add_archive_symbols. */
3470
3471static bfd_boolean
3472aout_link_check_archive_element (bfd *abfd,
3473 struct bfd_link_info *info,
13e570f8
AM		 3474 struct bfd_link_hash_entry *h ATTRIBUTE_UNUSED,
3475 const char *name ATTRIBUTE_UNUSED,
116c20d2
NC		 3476 bfd_boolean *pneeded)
3477{
0e144ba7
AM		 3478 bfd *oldbfd;
3479 bfd_boolean needed;
5d3236ee 3480
0e144ba7 3481 if (!aout_get_external_symbols (abfd))
116c20d2
NC		 3482 return FALSE;
3483
0e144ba7
AM		 3484 oldbfd = abfd;
3485 if (!aout_link_check_ar_symbols (abfd, info, pneeded, &abfd))
116c20d2
NC		 3486 return FALSE;
3487
0e144ba7
AM		 3488 needed = *pneeded;
3489 if (needed)
116c20d2 3490 {
5d3236ee
DK		 3491 /* Potentially, the add_archive_element hook may have set a
3492 substitute BFD for us. */
0e144ba7
AM		 3493 if (abfd != oldbfd)
3494 {
3495 if (!info->keep_memory
3496 && !aout_link_free_symbols (oldbfd))
3497 return FALSE;
3498 if (!aout_get_external_symbols (abfd))
3499 return FALSE;
3500 }
3501 if (!aout_link_add_symbols (abfd, info))
116c20d2
NC		 3502 return FALSE;
3503 }
3504
0e144ba7 3505 if (!info->keep_memory || !needed)
116c20d2 3506 {
0e144ba7 3507 if (!aout_link_free_symbols (abfd))
116c20d2
NC		 3508 return FALSE;
3509 }
3510
3511 return TRUE;
3512}
3513
3514/* Given an a.out BFD, add symbols to the global hash table as
3515 appropriate. */
3516
3517bfd_boolean
3518NAME (aout, link_add_symbols) (bfd *abfd, struct bfd_link_info *info)
3519{
3520 switch (bfd_get_format (abfd))
3521 {
3522 case bfd_object:
3523 return aout_link_add_object_symbols (abfd, info);
3524 case bfd_archive:
3525 return _bfd_generic_link_add_archive_symbols
3526 (abfd, info, aout_link_check_archive_element);
3527 default:
3528 bfd_set_error (bfd_error_wrong_format);
3529 return FALSE;
3530 }
3531}
3532\f
3533/* A hash table used for header files with N_BINCL entries. */
3534
3535struct aout_link_includes_table
3536{
3537 struct bfd_hash_table root;
3538};
3539
3540/* A linked list of totals that we have found for a particular header
3541 file. */
3542
3543struct aout_link_includes_totals
3544{
3545 struct aout_link_includes_totals *next;
3546 bfd_vma total;
3547};
3548
3549/* An entry in the header file hash table. */
3550
3551struct aout_link_includes_entry
3552{
3553 struct bfd_hash_entry root;
3554 /* List of totals we have found for this file. */
3555 struct aout_link_includes_totals *totals;
3556};
3557
3558/* Look up an entry in an the header file hash table. */
3559
3560#define aout_link_includes_lookup(table, string, create, copy) \
3561 ((struct aout_link_includes_entry *) \
3562 bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
3563
3564/* During the final link step we need to pass around a bunch of
3565 information, so we do it in an instance of this structure. */
3566
3567struct aout_final_link_info
3568{
3569 /* General link information. */
3570 struct bfd_link_info *info;
3571 /* Output bfd. */
252b5132
RH		 3572 bfd *output_bfd;
3573 /* Reloc file positions. */
3574 file_ptr treloff, dreloff;
3575 /* File position of symbols. */
3576 file_ptr symoff;
3577 /* String table. */
3578 struct bfd_strtab_hash *strtab;
3579 /* Header file hash table. */
3580 struct aout_link_includes_table includes;
3581 /* A buffer large enough to hold the contents of any section. */
3582 bfd_byte *contents;
3583 /* A buffer large enough to hold the relocs of any section. */
116c20d2 3584 void * relocs;
252b5132
RH		 3585 /* A buffer large enough to hold the symbol map of any input BFD. */
3586 int *symbol_map;
3587 /* A buffer large enough to hold output symbols of any input BFD. */
3588 struct external_nlist *output_syms;
3589};
3590
252b5132
RH		 3591/* The function to create a new entry in the header file hash table. */
3592
3593static struct bfd_hash_entry *
116c20d2
NC		 3594aout_link_includes_newfunc (struct bfd_hash_entry *entry,
3595 struct bfd_hash_table *table,
3596 const char *string)
252b5132
RH		 3597{
3598 struct aout_link_includes_entry *ret =
3599 (struct aout_link_includes_entry *) entry;
3600
3601 /* Allocate the structure if it has not already been allocated by a
3602 subclass. */
116c20d2 3603 if (ret == NULL)
a50b1753 3604 ret = (struct aout_link_includes_entry *)
07d6d2b8 3605 bfd_hash_allocate (table, sizeof (* ret));
116c20d2
NC		 3606 if (ret == NULL)
3607 return NULL;
252b5132
RH		 3608
3609 /* Call the allocation method of the superclass. */
3610 ret = ((struct aout_link_includes_entry *)
3611 bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string));
3612 if (ret)
3613 {
3614 /* Set local fields. */
3615 ret->totals = NULL;
3616 }
3617
3618 return (struct bfd_hash_entry *) ret;
3619}
3620
116c20d2
NC		 3621/* Write out a symbol that was not associated with an a.out input
3622 object. */
252b5132 3623
116c20d2 3624static bfd_boolean
7686d77d 3625aout_link_write_other_symbol (struct bfd_hash_entry *bh, void *data)
252b5132 3626{
7686d77d 3627 struct aout_link_hash_entry *h = (struct aout_link_hash_entry *) bh;
57402f1e 3628 struct aout_final_link_info *flaginfo = (struct aout_final_link_info *) data;
116c20d2
NC		 3629 bfd *output_bfd;
3630 int type;
3631 bfd_vma val;
3632 struct external_nlist outsym;
3633 bfd_size_type indx;
3634 bfd_size_type amt;
252b5132 3635
116c20d2
NC		 3636 if (h->root.type == bfd_link_hash_warning)
3637 {
3638 h = (struct aout_link_hash_entry *) h->root.u.i.link;
3639 if (h->root.type == bfd_link_hash_new)
3640 return TRUE;
3641 }
252b5132 3642
57402f1e 3643 output_bfd = flaginfo->output_bfd;
252b5132 3644
116c20d2 3645 if (aout_backend_info (output_bfd)->write_dynamic_symbol != NULL)
252b5132 3646 {
116c20d2 3647 if (! ((*aout_backend_info (output_bfd)->write_dynamic_symbol)
57402f1e 3648 (output_bfd, flaginfo->info, h)))
252b5132 3649 {
116c20d2
NC		 3650 /* FIXME: No way to handle errors. */
3651 abort ();
252b5132 3652 }
116c20d2 3653 }
252b5132 3654
116c20d2
NC		 3655 if (h->written)
3656 return TRUE;
252b5132 3657
116c20d2 3658 h->written = TRUE;
252b5132 3659
116c20d2
NC		 3660 /* An indx of -2 means the symbol must be written. */
3661 if (h->indx != -2
57402f1e
NC		 3662 && (flaginfo->info->strip == strip_all
3663 || (flaginfo->info->strip == strip_some
3664 && bfd_hash_lookup (flaginfo->info->keep_hash, h->root.root.string,
116c20d2
NC		 3665 FALSE, FALSE) == NULL)))
3666 return TRUE;
252b5132 3667
116c20d2 3668 switch (h->root.type)
252b5132 3669 {
116c20d2
NC		 3670 default:
3671 case bfd_link_hash_warning:
3672 abort ();
3673 /* Avoid variable not initialized warnings. */
3674 return TRUE;
3675 case bfd_link_hash_new:
3676 /* This can happen for set symbols when sets are not being
07d6d2b8 3677 built. */
116c20d2
NC		 3678 return TRUE;
3679 case bfd_link_hash_undefined:
3680 type = N_UNDF | N_EXT;
3681 val = 0;
3682 break;
3683 case bfd_link_hash_defined:
3684 case bfd_link_hash_defweak:
3685 {
3686 asection *sec;
252b5132 3687
116c20d2
NC		 3688 sec = h->root.u.def.section->output_section;
3689 BFD_ASSERT (bfd_is_abs_section (sec)
3690 || sec->owner == output_bfd);
3691 if (sec == obj_textsec (output_bfd))
3692 type = h->root.type == bfd_link_hash_defined ? N_TEXT : N_WEAKT;
3693 else if (sec == obj_datasec (output_bfd))
3694 type = h->root.type == bfd_link_hash_defined ? N_DATA : N_WEAKD;
3695 else if (sec == obj_bsssec (output_bfd))
3696 type = h->root.type == bfd_link_hash_defined ? N_BSS : N_WEAKB;
3697 else
3698 type = h->root.type == bfd_link_hash_defined ? N_ABS : N_WEAKA;
3699 type |= N_EXT;
3700 val = (h->root.u.def.value
3701 + sec->vma
3702 + h->root.u.def.section->output_offset);
3703 }
3704 break;
3705 case bfd_link_hash_common:
3706 type = N_UNDF | N_EXT;
3707 val = h->root.u.c.size;
3708 break;
3709 case bfd_link_hash_undefweak:
3710 type = N_WEAKU;
3711 val = 0;
c38eb2a6 3712 break;
116c20d2
NC		 3713 case bfd_link_hash_indirect:
3714 /* We ignore these symbols, since the indirected symbol is
3715 already in the hash table. */
3716 return TRUE;
3717 }
252b5132 3718
116c20d2
NC		 3719 H_PUT_8 (output_bfd, type, outsym.e_type);
3720 H_PUT_8 (output_bfd, 0, outsym.e_other);
3721 H_PUT_16 (output_bfd, 0, outsym.e_desc);
57402f1e 3722 indx = add_to_stringtab (output_bfd, flaginfo->strtab, h->root.root.string,
116c20d2
NC		 3723 FALSE);
3724 if (indx == - (bfd_size_type) 1)
3725 /* FIXME: No way to handle errors. */
3726 abort ();
252b5132 3727
116c20d2
NC		 3728 PUT_WORD (output_bfd, indx, outsym.e_strx);
3729 PUT_WORD (output_bfd, val, outsym.e_value);
252b5132 3730
116c20d2 3731 amt = EXTERNAL_NLIST_SIZE;
57402f1e 3732 if (bfd_seek (output_bfd, flaginfo->symoff, SEEK_SET) != 0
116c20d2
NC		 3733 || bfd_bwrite ((void *) &outsym, amt, output_bfd) != amt)
3734 /* FIXME: No way to handle errors. */
3735 abort ();
252b5132 3736
57402f1e 3737 flaginfo->symoff += EXTERNAL_NLIST_SIZE;
116c20d2
NC		 3738 h->indx = obj_aout_external_sym_count (output_bfd);
3739 ++obj_aout_external_sym_count (output_bfd);
252b5132 3740
116c20d2
NC		 3741 return TRUE;
3742}
252b5132 3743
116c20d2 3744/* Handle a link order which is supposed to generate a reloc. */
252b5132 3745
116c20d2 3746static bfd_boolean
57402f1e 3747aout_link_reloc_link_order (struct aout_final_link_info *flaginfo,
116c20d2
NC		 3748 asection *o,
3749 struct bfd_link_order *p)
3750{
3751 struct bfd_link_order_reloc *pr;
3752 int r_index;
3753 int r_extern;
3754 reloc_howto_type *howto;
3755 file_ptr *reloff_ptr = NULL;
3756 struct reloc_std_external srel;
3757 struct reloc_ext_external erel;
3758 void * rel_ptr;
3759 bfd_size_type amt;
252b5132 3760
116c20d2 3761 pr = p->u.reloc.p;
252b5132 3762
116c20d2
NC		 3763 if (p->type == bfd_section_reloc_link_order)
3764 {
3765 r_extern = 0;
3766 if (bfd_is_abs_section (pr->u.section))
3767 r_index = N_ABS | N_EXT;
3768 else
3769 {
57402f1e 3770 BFD_ASSERT (pr->u.section->owner == flaginfo->output_bfd);
116c20d2
NC		 3771 r_index = pr->u.section->target_index;
3772 }
3773 }
3774 else
3775 {
3776 struct aout_link_hash_entry *h;
252b5132 3777
116c20d2
NC		 3778 BFD_ASSERT (p->type == bfd_symbol_reloc_link_order);
3779 r_extern = 1;
3780 h = ((struct aout_link_hash_entry *)
57402f1e 3781 bfd_wrapped_link_hash_lookup (flaginfo->output_bfd, flaginfo->info,
116c20d2
NC		 3782 pr->u.name, FALSE, FALSE, TRUE));
3783 if (h != NULL
3784 && h->indx >= 0)
3785 r_index = h->indx;
3786 else if (h != NULL)
3787 {
3788 /* We decided to strip this symbol, but it turns out that we
3789 can't. Note that we lose the other and desc information
3790 here. I don't think that will ever matter for a global
3791 symbol. */
3792 h->indx = -2;
3793 h->written = FALSE;
57402f1e 3794 if (!aout_link_write_other_symbol (&h->root.root, flaginfo))
116c20d2
NC		 3795 return FALSE;
3796 r_index = h->indx;
3797 }
3798 else
3799 {
1a72702b
AM		 3800 (*flaginfo->info->callbacks->unattached_reloc)
3801 (flaginfo->info, pr->u.name, NULL, NULL, (bfd_vma) 0);
116c20d2
NC		 3802 r_index = 0;
3803 }
3804 }
252b5132 3805
57402f1e 3806 howto = bfd_reloc_type_lookup (flaginfo->output_bfd, pr->reloc);
116c20d2 3807 if (howto == 0)
252b5132 3808 {
116c20d2
NC		 3809 bfd_set_error (bfd_error_bad_value);
3810 return FALSE;
252b5132
RH		 3811 }
3812
57402f1e
NC		 3813 if (o == obj_textsec (flaginfo->output_bfd))
3814 reloff_ptr = &flaginfo->treloff;
3815 else if (o == obj_datasec (flaginfo->output_bfd))
3816 reloff_ptr = &flaginfo->dreloff;
116c20d2
NC		 3817 else
3818 abort ();
3819
57402f1e 3820 if (obj_reloc_entry_size (flaginfo->output_bfd) == RELOC_STD_SIZE)
252b5132 3821 {
116c20d2 3822#ifdef MY_put_reloc
57402f1e 3823 MY_put_reloc (flaginfo->output_bfd, r_extern, r_index, p->offset, howto,
116c20d2
NC		 3824 &srel);
3825#else
3826 {
3827 int r_pcrel;
3828 int r_baserel;
3829 int r_jmptable;
3830 int r_relative;
3831 int r_length;
252b5132 3832
116c20d2
NC		 3833 r_pcrel = (int) howto->pc_relative;
3834 r_baserel = (howto->type & 8) != 0;
3835 r_jmptable = (howto->type & 16) != 0;
3836 r_relative = (howto->type & 32) != 0;
3837 r_length = howto->size;
252b5132 3838
57402f1e
NC		 3839 PUT_WORD (flaginfo->output_bfd, p->offset, srel.r_address);
3840 if (bfd_header_big_endian (flaginfo->output_bfd))
116c20d2
NC		 3841 {
3842 srel.r_index[0] = r_index >> 16;
3843 srel.r_index[1] = r_index >> 8;
3844 srel.r_index[2] = r_index;
3845 srel.r_type[0] =
3846 ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0)
3847 | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0)
3848 | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0)
3849 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0)
3850 | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0)
3851 | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG));
3852 }
3853 else
3854 {
3855 srel.r_index[2] = r_index >> 16;
3856 srel.r_index[1] = r_index >> 8;
3857 srel.r_index[0] = r_index;
3858 srel.r_type[0] =
3859 ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0)
3860 | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0)
3861 | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0)
3862 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0)
3863 | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0)
3864 | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE));
3865 }
3866 }
3867#endif
3868 rel_ptr = (void *) &srel;
252b5132 3869
116c20d2
NC		 3870 /* We have to write the addend into the object file, since
3871 standard a.out relocs are in place. It would be more
3872 reliable if we had the current contents of the file here,
3873 rather than assuming zeroes, but we can't read the file since
3874 it was opened using bfd_openw. */
3875 if (pr->addend != 0)
252b5132 3876 {
116c20d2
NC		 3877 bfd_size_type size;
3878 bfd_reloc_status_type r;
3879 bfd_byte *buf;
3880 bfd_boolean ok;
3881
3882 size = bfd_get_reloc_size (howto);
a50b1753 3883 buf = (bfd_byte *) bfd_zmalloc (size);
6346d5ca 3884 if (buf == NULL && size != 0)
116c20d2 3885 return FALSE;
57402f1e 3886 r = MY_relocate_contents (howto, flaginfo->output_bfd,
116c20d2
NC		 3887 (bfd_vma) pr->addend, buf);
3888 switch (r)
252b5132 3889 {
116c20d2
NC		 3890 case bfd_reloc_ok:
3891 break;
3892 default:
3893 case bfd_reloc_outofrange:
3894 abort ();
3895 case bfd_reloc_overflow:
1a72702b
AM		 3896 (*flaginfo->info->callbacks->reloc_overflow)
3897 (flaginfo->info, NULL,
3898 (p->type == bfd_section_reloc_link_order
3899 ? bfd_section_name (flaginfo->output_bfd,
3900 pr->u.section)
3901 : pr->u.name),
3902 howto->name, pr->addend, NULL, NULL, (bfd_vma) 0);
116c20d2 3903 break;
252b5132 3904 }
57402f1e 3905 ok = bfd_set_section_contents (flaginfo->output_bfd, o, (void *) buf,
116c20d2
NC		 3906 (file_ptr) p->offset, size);
3907 free (buf);
3908 if (! ok)
3909 return FALSE;
252b5132
RH		 3910 }
3911 }
116c20d2 3912 else
252b5132 3913 {
116c20d2 3914#ifdef MY_put_ext_reloc
57402f1e 3915 MY_put_ext_reloc (flaginfo->output_bfd, r_extern, r_index, p->offset,
116c20d2
NC		 3916 howto, &erel, pr->addend);
3917#else
57402f1e 3918 PUT_WORD (flaginfo->output_bfd, p->offset, erel.r_address);
252b5132 3919
57402f1e 3920 if (bfd_header_big_endian (flaginfo->output_bfd))
116c20d2
NC		 3921 {
3922 erel.r_index[0] = r_index >> 16;
3923 erel.r_index[1] = r_index >> 8;
3924 erel.r_index[2] = r_index;
3925 erel.r_type[0] =
3926 ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0)
3927 | (howto->type << RELOC_EXT_BITS_TYPE_SH_BIG));
3928 }
3929 else
3930 {
3931 erel.r_index[2] = r_index >> 16;
3932 erel.r_index[1] = r_index >> 8;
3933 erel.r_index[0] = r_index;
3934 erel.r_type[0] =
3935 (r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0)
3936 | (howto->type << RELOC_EXT_BITS_TYPE_SH_LITTLE);
3937 }
252b5132 3938
57402f1e 3939 PUT_WORD (flaginfo->output_bfd, (bfd_vma) pr->addend, erel.r_addend);
116c20d2 3940#endif /* MY_put_ext_reloc */
252b5132 3941
116c20d2 3942 rel_ptr = (void *) &erel;
252b5132 3943 }
252b5132 3944
57402f1e
NC		 3945 amt = obj_reloc_entry_size (flaginfo->output_bfd);
3946 if (bfd_seek (flaginfo->output_bfd, *reloff_ptr, SEEK_SET) != 0
3947 || bfd_bwrite (rel_ptr, amt, flaginfo->output_bfd) != amt)
116c20d2 3948 return FALSE;
252b5132 3949
57402f1e 3950 *reloff_ptr += obj_reloc_entry_size (flaginfo->output_bfd);
252b5132 3951
116c20d2
NC		 3952 /* Assert that the relocs have not run into the symbols, and that n
3953 the text relocs have not run into the data relocs. */
57402f1e
NC		 3954 BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (flaginfo->output_bfd)
3955 && (reloff_ptr != &flaginfo->treloff
116c20d2 3956 || (*reloff_ptr
57402f1e 3957 <= obj_datasec (flaginfo->output_bfd)->rel_filepos)));
116c20d2
NC		 3958
3959 return TRUE;
252b5132
RH		 3960}
3961
116c20d2 3962/* Get the section corresponding to a reloc index. */
252b5132 3963
116c20d2
NC		 3964static INLINE asection *
3965aout_reloc_index_to_section (bfd *abfd, int indx)
252b5132 3966{
116c20d2 3967 switch (indx & N_TYPE)
252b5132 3968 {
116c20d2
NC		 3969 case N_TEXT: return obj_textsec (abfd);
3970 case N_DATA: return obj_datasec (abfd);
3971 case N_BSS: return obj_bsssec (abfd);
3972 case N_ABS:
3973 case N_UNDF: return bfd_abs_section_ptr;
3974 default: abort ();
252b5132 3975 }
116c20d2 3976 return NULL;
252b5132
RH		 3977}
3978
116c20d2 3979/* Relocate an a.out section using standard a.out relocs. */
252b5132 3980
b34976b6 3981static bfd_boolean
57402f1e 3982aout_link_input_section_std (struct aout_final_link_info *flaginfo,
116c20d2
NC		 3983 bfd *input_bfd,
3984 asection *input_section,
3985 struct reloc_std_external *relocs,
3986 bfd_size_type rel_size,
3987 bfd_byte *contents)
252b5132 3988{
116c20d2
NC		 3989 bfd_boolean (*check_dynamic_reloc)
3990 (struct bfd_link_info *, bfd *, asection *,
3991 struct aout_link_hash_entry *, void *, bfd_byte *, bfd_boolean *,
3992 bfd_vma *);
252b5132 3993 bfd *output_bfd;
116c20d2
NC		 3994 bfd_boolean relocatable;
3995 struct external_nlist *syms;
252b5132 3996 char *strings;
116c20d2 3997 struct aout_link_hash_entry **sym_hashes;
252b5132 3998 int *symbol_map;
116c20d2
NC		 3999 bfd_size_type reloc_count;
4000 struct reloc_std_external *rel;
4001 struct reloc_std_external *rel_end;
252b5132 4002
57402f1e 4003 output_bfd = flaginfo->output_bfd;
116c20d2 4004 check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc;
252b5132 4005
116c20d2
NC		 4006 BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE);
4007 BFD_ASSERT (input_bfd->xvec->header_byteorder
4008 == output_bfd->xvec->header_byteorder);
252b5132 4009
0e1862bb 4010 relocatable = bfd_link_relocatable (flaginfo->info);
116c20d2
NC		 4011 syms = obj_aout_external_syms (input_bfd);
4012 strings = obj_aout_external_strings (input_bfd);
4013 sym_hashes = obj_aout_sym_hashes (input_bfd);
57402f1e 4014 symbol_map = flaginfo->symbol_map;
116c20d2
NC		 4015
4016 reloc_count = rel_size / RELOC_STD_SIZE;
4017 rel = relocs;
4018 rel_end = rel + reloc_count;
4019 for (; rel < rel_end; rel++)
252b5132 4020 {
116c20d2
NC		 4021 bfd_vma r_addr;
4022 int r_index;
4023 int r_extern;
4024 int r_pcrel;
4025 int r_baserel = 0;
4026 reloc_howto_type *howto;
4027 struct aout_link_hash_entry *h = NULL;
4028 bfd_vma relocation;
4029 bfd_reloc_status_type r;
252b5132 4030
116c20d2 4031 r_addr = GET_SWORD (input_bfd, rel->r_address);
252b5132 4032
116c20d2
NC		 4033#ifdef MY_reloc_howto
4034 howto = MY_reloc_howto (input_bfd, rel, r_index, r_extern, r_pcrel);
4035#else
4036 {
4037 int r_jmptable;
4038 int r_relative;
4039 int r_length;
4040 unsigned int howto_idx;
252b5132 4041
116c20d2
NC		 4042 if (bfd_header_big_endian (input_bfd))
4043 {
4044 r_index = (((unsigned int) rel->r_index[0] << 16)
4045 | ((unsigned int) rel->r_index[1] << 8)
4046 | rel->r_index[2]);
4047 r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
4048 r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
4049 r_baserel = (0 != (rel->r_type[0] & RELOC_STD_BITS_BASEREL_BIG));
4050 r_jmptable= (0 != (rel->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG));
4051 r_relative= (0 != (rel->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG));
4052 r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_BIG)
4053 >> RELOC_STD_BITS_LENGTH_SH_BIG);
4054 }
4055 else
4056 {
4057 r_index = (((unsigned int) rel->r_index[2] << 16)
4058 | ((unsigned int) rel->r_index[1] << 8)
4059 | rel->r_index[0]);
4060 r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
4061 r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
4062 r_baserel = (0 != (rel->r_type[0]
4063 & RELOC_STD_BITS_BASEREL_LITTLE));
4064 r_jmptable= (0 != (rel->r_type[0]
4065 & RELOC_STD_BITS_JMPTABLE_LITTLE));
4066 r_relative= (0 != (rel->r_type[0]
4067 & RELOC_STD_BITS_RELATIVE_LITTLE));
4068 r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE)
4069 >> RELOC_STD_BITS_LENGTH_SH_LITTLE);
4070 }
252b5132 4071
116c20d2
NC		 4072 howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel
4073 + 16 * r_jmptable + 32 * r_relative);
ad756e3f
AM		 4074 if (howto_idx < TABLE_SIZE (howto_table_std))
4075 howto = howto_table_std + howto_idx;
4076 else
4077 howto = NULL;
116c20d2
NC		 4078 }
4079#endif
252b5132 4080
ad756e3f
AM		 4081 if (howto == NULL)
4082 {
0aa13fee
AM		 4083 _bfd_error_handler (_("%pB: unsupported relocation type"),
4084 input_bfd);
ad756e3f
AM		 4085 bfd_set_error (bfd_error_bad_value);
4086 return FALSE;
4087 }
4088
116c20d2 4089 if (relocatable)
252b5132 4090 {
116c20d2
NC		 4091 /* We are generating a relocatable output file, and must
4092 modify the reloc accordingly. */
4093 if (r_extern)
252b5132 4094 {
116c20d2
NC		 4095 /* If we know the symbol this relocation is against,
4096 convert it into a relocation against a section. This
4097 is what the native linker does. */
4098 h = sym_hashes[r_index];
4099 if (h != NULL
4100 && (h->root.type == bfd_link_hash_defined
4101 || h->root.type == bfd_link_hash_defweak))
252b5132 4102 {
252b5132
RH		 4103 asection *output_section;
4104
116c20d2
NC		 4105 /* Change the r_extern value. */
4106 if (bfd_header_big_endian (output_bfd))
4107 rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_BIG;
4108 else
4109 rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_LITTLE;
252b5132 4110
116c20d2
NC		 4111 /* Compute a new r_index. */
4112 output_section = h->root.u.def.section->output_section;
252b5132 4113 if (output_section == obj_textsec (output_bfd))
116c20d2 4114 r_index = N_TEXT;
252b5132 4115 else if (output_section == obj_datasec (output_bfd))
116c20d2 4116 r_index = N_DATA;
252b5132 4117 else if (output_section == obj_bsssec (output_bfd))
116c20d2 4118 r_index = N_BSS;
252b5132 4119 else
116c20d2 4120 r_index = N_ABS;
252b5132 4121
116c20d2
NC		 4122 /* Add the symbol value and the section VMA to the
4123 addend stored in the contents. */
4124 relocation = (h->root.u.def.value
4125 + output_section->vma
4126 + h->root.u.def.section->output_offset);
252b5132 4127 }
116c20d2 4128 else
252b5132 4129 {
116c20d2
NC		 4130 /* We must change r_index according to the symbol
4131 map. */
4132 r_index = symbol_map[r_index];
252b5132 4133
116c20d2 4134 if (r_index == -1)
252b5132 4135 {
116c20d2 4136 if (h != NULL)
252b5132 4137 {
116c20d2 4138 /* We decided to strip this symbol, but it
07d6d2b8
AM		 4139 turns out that we can't. Note that we
4140 lose the other and desc information here.
4141 I don't think that will ever matter for a
4142 global symbol. */
116c20d2 4143 if (h->indx < 0)
252b5132 4144 {
116c20d2
NC		 4145 h->indx = -2;
4146 h->written = FALSE;
7686d77d 4147 if (!aout_link_write_other_symbol (&h->root.root,
57402f1e 4148 flaginfo))
116c20d2 4149 return FALSE;
252b5132 4150 }
116c20d2
NC		 4151 r_index = h->indx;
4152 }
4153 else
4154 {
4155 const char *name;
4156
4157 name = strings + GET_WORD (input_bfd,
4158 syms[r_index].e_strx);
1a72702b
AM		 4159 (*flaginfo->info->callbacks->unattached_reloc)
4160 (flaginfo->info, name,
4161 input_bfd, input_section, r_addr);
116c20d2 4162 r_index = 0;
252b5132
RH		 4163 }
4164 }
116c20d2
NC		 4165
4166 relocation = 0;
252b5132
RH		 4167 }
4168
116c20d2
NC		 4169 /* Write out the new r_index value. */
4170 if (bfd_header_big_endian (output_bfd))
252b5132 4171 {
116c20d2
NC		 4172 rel->r_index[0] = r_index >> 16;
4173 rel->r_index[1] = r_index >> 8;
4174 rel->r_index[2] = r_index;
252b5132
RH		 4175 }
4176 else
4177 {
116c20d2
NC		 4178 rel->r_index[2] = r_index >> 16;
4179 rel->r_index[1] = r_index >> 8;
4180 rel->r_index[0] = r_index;
252b5132
RH		 4181 }
4182 }
252b5132 4183 else
116c20d2
NC		 4184 {
4185 asection *section;
252b5132 4186
116c20d2
NC		 4187 /* This is a relocation against a section. We must
4188 adjust by the amount that the section moved. */
4189 section = aout_reloc_index_to_section (input_bfd, r_index);
4190 relocation = (section->output_section->vma
4191 + section->output_offset
4192 - section->vma);
4193 }
252b5132 4194
116c20d2
NC		 4195 /* Change the address of the relocation. */
4196 PUT_WORD (output_bfd,
4197 r_addr + input_section->output_offset,
4198 rel->r_address);
252b5132 4199
116c20d2
NC		 4200 /* Adjust a PC relative relocation by removing the reference
4201 to the original address in the section and including the
4202 reference to the new address. */
4203 if (r_pcrel)
4204 relocation -= (input_section->output_section->vma
4205 + input_section->output_offset
4206 - input_section->vma);
e92d460e 4207
116c20d2
NC		 4208#ifdef MY_relocatable_reloc
4209 MY_relocatable_reloc (howto, output_bfd, rel, relocation, r_addr);
4210#endif
252b5132 4211
116c20d2
NC		 4212 if (relocation == 0)
4213 r = bfd_reloc_ok;
4214 else
4215 r = MY_relocate_contents (howto,
4216 input_bfd, relocation,
4217 contents + r_addr);
252b5132 4218 }
116c20d2
NC		 4219 else
4220 {
4221 bfd_boolean hundef;
252b5132 4222
116c20d2
NC		 4223 /* We are generating an executable, and must do a full
4224 relocation. */
4225 hundef = FALSE;
252b5132 4226
116c20d2
NC		 4227 if (r_extern)
4228 {
4229 h = sym_hashes[r_index];
252b5132 4230
116c20d2
NC		 4231 if (h != NULL
4232 && (h->root.type == bfd_link_hash_defined
4233 || h->root.type == bfd_link_hash_defweak))
4234 {
4235 relocation = (h->root.u.def.value
4236 + h->root.u.def.section->output_section->vma
4237 + h->root.u.def.section->output_offset);
4238 }
4239 else if (h != NULL
4240 && h->root.type == bfd_link_hash_undefweak)
4241 relocation = 0;
4242 else
4243 {
4244 hundef = TRUE;
4245 relocation = 0;
4246 }
4247 }
4248 else
4249 {
4250 asection *section;
252b5132 4251
116c20d2
NC		 4252 section = aout_reloc_index_to_section (input_bfd, r_index);
4253 relocation = (section->output_section->vma
4254 + section->output_offset
4255 - section->vma);
4256 if (r_pcrel)
4257 relocation += input_section->vma;
4258 }
252b5132 4259
116c20d2
NC		 4260 if (check_dynamic_reloc != NULL)
4261 {
4262 bfd_boolean skip;
252b5132 4263
116c20d2 4264 if (! ((*check_dynamic_reloc)
57402f1e 4265 (flaginfo->info, input_bfd, input_section, h,
116c20d2
NC		 4266 (void *) rel, contents, &skip, &relocation)))
4267 return FALSE;
4268 if (skip)
4269 continue;
4270 }
252b5132 4271
116c20d2 4272 /* Now warn if a global symbol is undefined. We could not
07d6d2b8
AM		 4273 do this earlier, because check_dynamic_reloc might want
4274 to skip this reloc. */
0e1862bb 4275 if (hundef && ! bfd_link_pic (flaginfo->info) && ! r_baserel)
116c20d2
NC		 4276 {
4277 const char *name;
252b5132 4278
116c20d2
NC		 4279 if (h != NULL)
4280 name = h->root.root.string;
4281 else
4282 name = strings + GET_WORD (input_bfd, syms[r_index].e_strx);
1a72702b
AM		 4283 (*flaginfo->info->callbacks->undefined_symbol)
4284 (flaginfo->info, name, input_bfd, input_section, r_addr, TRUE);
116c20d2 4285 }
252b5132 4286
116c20d2
NC		 4287 r = MY_final_link_relocate (howto,
4288 input_bfd, input_section,
4289 contents, r_addr, relocation,
4290 (bfd_vma) 0);
252b5132 4291 }
252b5132 4292
116c20d2
NC		 4293 if (r != bfd_reloc_ok)
4294 {
4295 switch (r)
4296 {
4297 default:
4298 case bfd_reloc_outofrange:
4299 abort ();
4300 case bfd_reloc_overflow:
4301 {
4302 const char *name;
252b5132 4303
116c20d2
NC		 4304 if (h != NULL)
4305 name = NULL;
4306 else if (r_extern)
4307 name = strings + GET_WORD (input_bfd,
4308 syms[r_index].e_strx);
4309 else
4310 {
4311 asection *s;
252b5132 4312
116c20d2
NC		 4313 s = aout_reloc_index_to_section (input_bfd, r_index);
4314 name = bfd_section_name (input_bfd, s);
4315 }
1a72702b
AM		 4316 (*flaginfo->info->callbacks->reloc_overflow)
4317 (flaginfo->info, (h ? &h->root : NULL), name, howto->name,
4318 (bfd_vma) 0, input_bfd, input_section, r_addr);
116c20d2
NC		 4319 }
4320 break;
4321 }
4322 }
252b5132
RH		 4323 }
4324
b34976b6 4325 return TRUE;
252b5132
RH		 4326}
4327
116c20d2 4328/* Relocate an a.out section using extended a.out relocs. */
252b5132 4329
b34976b6 4330static bfd_boolean
57402f1e 4331aout_link_input_section_ext (struct aout_final_link_info *flaginfo,
116c20d2
NC		 4332 bfd *input_bfd,
4333 asection *input_section,
4334 struct reloc_ext_external *relocs,
4335 bfd_size_type rel_size,
4336 bfd_byte *contents)
252b5132 4337{
b34976b6 4338 bfd_boolean (*check_dynamic_reloc)
116c20d2
NC		 4339 (struct bfd_link_info *, bfd *, asection *,
4340 struct aout_link_hash_entry *, void *, bfd_byte *, bfd_boolean *,
4341 bfd_vma *);
252b5132 4342 bfd *output_bfd;
1049f94e 4343 bfd_boolean relocatable;
252b5132
RH		 4344 struct external_nlist *syms;
4345 char *strings;
4346 struct aout_link_hash_entry **sym_hashes;
4347 int *symbol_map;
4348 bfd_size_type reloc_count;
116c20d2
NC		 4349 struct reloc_ext_external *rel;
4350 struct reloc_ext_external *rel_end;
252b5132 4351
57402f1e 4352 output_bfd = flaginfo->output_bfd;
252b5132
RH		 4353 check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc;
4354
116c20d2 4355 BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_EXT_SIZE);
252b5132
RH		 4356 BFD_ASSERT (input_bfd->xvec->header_byteorder
4357 == output_bfd->xvec->header_byteorder);
4358
0e1862bb 4359 relocatable = bfd_link_relocatable (flaginfo->info);
252b5132
RH		 4360 syms = obj_aout_external_syms (input_bfd);
4361 strings = obj_aout_external_strings (input_bfd);
4362 sym_hashes = obj_aout_sym_hashes (input_bfd);
57402f1e 4363 symbol_map = flaginfo->symbol_map;
252b5132 4364
116c20d2 4365 reloc_count = rel_size / RELOC_EXT_SIZE;
252b5132
RH		 4366 rel = relocs;
4367 rel_end = rel + reloc_count;
4368 for (; rel < rel_end; rel++)
4369 {
4370 bfd_vma r_addr;
4371 int r_index;
4372 int r_extern;
116c20d2
NC		 4373 unsigned int r_type;
4374 bfd_vma r_addend;
252b5132 4375 struct aout_link_hash_entry *h = NULL;
116c20d2 4376 asection *r_section = NULL;
252b5132 4377 bfd_vma relocation;
252b5132
RH		 4378
4379 r_addr = GET_SWORD (input_bfd, rel->r_address);
4380
116c20d2
NC		 4381 if (bfd_header_big_endian (input_bfd))
4382 {
4383 r_index = (((unsigned int) rel->r_index[0] << 16)
4384 | ((unsigned int) rel->r_index[1] << 8)
4385 | rel->r_index[2]);
4386 r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG));
4387 r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
4388 >> RELOC_EXT_BITS_TYPE_SH_BIG);
4389 }
4390 else
4391 {
4392 r_index = (((unsigned int) rel->r_index[2] << 16)
4393 | ((unsigned int) rel->r_index[1] << 8)
4394 | rel->r_index[0]);
4395 r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE));
4396 r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
4397 >> RELOC_EXT_BITS_TYPE_SH_LITTLE);
4398 }
252b5132 4399
116c20d2 4400 r_addend = GET_SWORD (input_bfd, rel->r_addend);
252b5132 4401
ad756e3f
AM		 4402 if (r_type >= TABLE_SIZE (howto_table_ext))
4403 {
0aa13fee
AM		 4404 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
4405 input_bfd, r_type);
ad756e3f
AM		 4406 bfd_set_error (bfd_error_bad_value);
4407 return FALSE;
4408 }
252b5132 4409
1049f94e 4410 if (relocatable)
252b5132 4411 {
1049f94e 4412 /* We are generating a relocatable output file, and must
252b5132 4413 modify the reloc accordingly. */
116c20d2
NC		 4414 if (r_extern
4415 || r_type == (unsigned int) RELOC_BASE10
4416 || r_type == (unsigned int) RELOC_BASE13
4417 || r_type == (unsigned int) RELOC_BASE22)
252b5132
RH		 4418 {
4419 /* If we know the symbol this relocation is against,
4420 convert it into a relocation against a section. This
4421 is what the native linker does. */
116c20d2
NC		 4422 if (r_type == (unsigned int) RELOC_BASE10
4423 || r_type == (unsigned int) RELOC_BASE13
4424 || r_type == (unsigned int) RELOC_BASE22)
4425 h = NULL;
4426 else
4427 h = sym_hashes[r_index];
4428 if (h != NULL
252b5132
RH		 4429 && (h->root.type == bfd_link_hash_defined
4430 || h->root.type == bfd_link_hash_defweak))
4431 {
4432 asection *output_section;
4433
4434 /* Change the r_extern value. */
4435 if (bfd_header_big_endian (output_bfd))
116c20d2 4436 rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_BIG;
252b5132 4437 else
116c20d2 4438 rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_LITTLE;
252b5132
RH		 4439
4440 /* Compute a new r_index. */
4441 output_section = h->root.u.def.section->output_section;
4442 if (output_section == obj_textsec (output_bfd))
4443 r_index = N_TEXT;
4444 else if (output_section == obj_datasec (output_bfd))
4445 r_index = N_DATA;
4446 else if (output_section == obj_bsssec (output_bfd))
4447 r_index = N_BSS;
4448 else
4449 r_index = N_ABS;
4450
4451 /* Add the symbol value and the section VMA to the
116c20d2 4452 addend. */
252b5132
RH		 4453 relocation = (h->root.u.def.value
4454 + output_section->vma
4455 + h->root.u.def.section->output_offset);
116c20d2
NC		 4456
4457 /* Now RELOCATION is the VMA of the final
4458 destination. If this is a PC relative reloc,
4459 then ADDEND is the negative of the source VMA.
4460 We want to set ADDEND to the difference between
4461 the destination VMA and the source VMA, which
4462 means we must adjust RELOCATION by the change in
4463 the source VMA. This is done below. */
252b5132
RH		 4464 }
4465 else
4466 {
4467 /* We must change r_index according to the symbol
4468 map. */
4469 r_index = symbol_map[r_index];
4470
4471 if (r_index == -1)
4472 {
4473 if (h != NULL)
4474 {
4475 /* We decided to strip this symbol, but it
07d6d2b8
AM		 4476 turns out that we can't. Note that we
4477 lose the other and desc information here.
4478 I don't think that will ever matter for a
4479 global symbol. */
252b5132
RH		 4480 if (h->indx < 0)
4481 {
4482 h->indx = -2;
b34976b6 4483 h->written = FALSE;
7686d77d 4484 if (!aout_link_write_other_symbol (&h->root.root,
57402f1e 4485 flaginfo))
b34976b6 4486 return FALSE;
252b5132
RH		 4487 }
4488 r_index = h->indx;
4489 }
4490 else
4491 {
4492 const char *name;
4493
4494 name = strings + GET_WORD (input_bfd,
4495 syms[r_index].e_strx);
1a72702b
AM		 4496 (*flaginfo->info->callbacks->unattached_reloc)
4497 (flaginfo->info, name,
4498 input_bfd, input_section, r_addr);
252b5132
RH		 4499 r_index = 0;
4500 }
4501 }
4502
4503 relocation = 0;
116c20d2
NC		 4504
4505 /* If this is a PC relative reloc, then the addend
4506 is the negative of the source VMA. We must
4507 adjust it by the change in the source VMA. This
4508 is done below. */
252b5132
RH		 4509 }
4510
4511 /* Write out the new r_index value. */
4512 if (bfd_header_big_endian (output_bfd))
4513 {
4514 rel->r_index[0] = r_index >> 16;
4515 rel->r_index[1] = r_index >> 8;
4516 rel->r_index[2] = r_index;
4517 }
4518 else
4519 {
4520 rel->r_index[2] = r_index >> 16;
4521 rel->r_index[1] = r_index >> 8;
4522 rel->r_index[0] = r_index;
4523 }
4524 }
4525 else
4526 {
252b5132
RH		 4527 /* This is a relocation against a section. We must
4528 adjust by the amount that the section moved. */
116c20d2
NC		 4529 r_section = aout_reloc_index_to_section (input_bfd, r_index);
4530 relocation = (r_section->output_section->vma
4531 + r_section->output_offset
4532 - r_section->vma);
252b5132 4533
116c20d2
NC		 4534 /* If this is a PC relative reloc, then the addend is
4535 the difference in VMA between the destination and the
4536 source. We have just adjusted for the change in VMA
4537 of the destination, so we must also adjust by the
4538 change in VMA of the source. This is done below. */
4539 }
252b5132 4540
116c20d2
NC		 4541 /* As described above, we must always adjust a PC relative
4542 reloc by the change in VMA of the source. However, if
4543 pcrel_offset is set, then the addend does not include the
4544 location within the section, in which case we don't need
4545 to adjust anything. */
4546 if (howto_table_ext[r_type].pc_relative
4547 && ! howto_table_ext[r_type].pcrel_offset)
252b5132
RH		 4548 relocation -= (input_section->output_section->vma
4549 + input_section->output_offset
4550 - input_section->vma);
4551
116c20d2
NC		 4552 /* Change the addend if necessary. */
4553 if (relocation != 0)
4554 PUT_WORD (output_bfd, r_addend + relocation, rel->r_addend);
252b5132 4555
116c20d2
NC		 4556 /* Change the address of the relocation. */
4557 PUT_WORD (output_bfd,
4558 r_addr + input_section->output_offset,
4559 rel->r_address);
252b5132
RH		 4560 }
4561 else
4562 {
b34976b6 4563 bfd_boolean hundef;
116c20d2 4564 bfd_reloc_status_type r;
252b5132
RH		 4565
4566 /* We are generating an executable, and must do a full
4567 relocation. */
b34976b6 4568 hundef = FALSE;
252b5132
RH		 4569
4570 if (r_extern)
4571 {
4572 h = sym_hashes[r_index];
4573
116c20d2 4574 if (h != NULL
252b5132
RH		 4575 && (h->root.type == bfd_link_hash_defined
4576 || h->root.type == bfd_link_hash_defweak))
4577 {
4578 relocation = (h->root.u.def.value
4579 + h->root.u.def.section->output_section->vma
4580 + h->root.u.def.section->output_offset);
4581 }
116c20d2 4582 else if (h != NULL
252b5132
RH		 4583 && h->root.type == bfd_link_hash_undefweak)
4584 relocation = 0;
4585 else
4586 {
b34976b6 4587 hundef = TRUE;
252b5132
RH		 4588 relocation = 0;
4589 }
4590 }
116c20d2
NC		 4591 else if (r_type == (unsigned int) RELOC_BASE10
4592 || r_type == (unsigned int) RELOC_BASE13
4593 || r_type == (unsigned int) RELOC_BASE22)
4594 {
4595 struct external_nlist *sym;
4596 int type;
4597
4598 /* For base relative relocs, r_index is always an index
07d6d2b8 4599 into the symbol table, even if r_extern is 0. */
116c20d2
NC		 4600 sym = syms + r_index;
4601 type = H_GET_8 (input_bfd, sym->e_type);
4602 if ((type & N_TYPE) == N_TEXT
4603 || type == N_WEAKT)
4604 r_section = obj_textsec (input_bfd);
4605 else if ((type & N_TYPE) == N_DATA
4606 || type == N_WEAKD)
4607 r_section = obj_datasec (input_bfd);
4608 else if ((type & N_TYPE) == N_BSS
4609 || type == N_WEAKB)
4610 r_section = obj_bsssec (input_bfd);
4611 else if ((type & N_TYPE) == N_ABS
4612 || type == N_WEAKA)
4613 r_section = bfd_abs_section_ptr;
4614 else
4615 abort ();
4616 relocation = (r_section->output_section->vma
4617 + r_section->output_offset
4618 + (GET_WORD (input_bfd, sym->e_value)
4619 - r_section->vma));
4620 }
252b5132
RH		 4621 else
4622 {
116c20d2 4623 r_section = aout_reloc_index_to_section (input_bfd, r_index);
252b5132 4624
116c20d2
NC		 4625 /* If this is a PC relative reloc, then R_ADDEND is the
4626 difference between the two vmas, or
4627 old_dest_sec + old_dest_off - (old_src_sec + old_src_off)
4628 where
4629 old_dest_sec == section->vma
4630 and
4631 old_src_sec == input_section->vma
4632 and
4633 old_src_off == r_addr
4634
4635 _bfd_final_link_relocate expects RELOCATION +
4636 R_ADDEND to be the VMA of the destination minus
4637 r_addr (the minus r_addr is because this relocation
4638 is not pcrel_offset, which is a bit confusing and
4639 should, perhaps, be changed), or
4640 new_dest_sec
4641 where
4642 new_dest_sec == output_section->vma + output_offset
4643 We arrange for this to happen by setting RELOCATION to
4644 new_dest_sec + old_src_sec - old_dest_sec
4645
4646 If this is not a PC relative reloc, then R_ADDEND is
4647 simply the VMA of the destination, so we set
4648 RELOCATION to the change in the destination VMA, or
4649 new_dest_sec - old_dest_sec
4650 */
4651 relocation = (r_section->output_section->vma
4652 + r_section->output_offset
4653 - r_section->vma);
4654 if (howto_table_ext[r_type].pc_relative)
252b5132
RH		 4655 relocation += input_section->vma;
4656 }
4657
4658 if (check_dynamic_reloc != NULL)
4659 {
b34976b6 4660 bfd_boolean skip;
252b5132
RH		 4661
4662 if (! ((*check_dynamic_reloc)
57402f1e 4663 (flaginfo->info, input_bfd, input_section, h,
116c20d2 4664 (void *) rel, contents, &skip, &relocation)))
b34976b6 4665 return FALSE;
252b5132
RH		 4666 if (skip)
4667 continue;
4668 }
4669
4670 /* Now warn if a global symbol is undefined. We could not
07d6d2b8
AM		 4671 do this earlier, because check_dynamic_reloc might want
4672 to skip this reloc. */
116c20d2 4673 if (hundef
0e1862bb 4674 && ! bfd_link_pic (flaginfo->info)
116c20d2
NC		 4675 && r_type != (unsigned int) RELOC_BASE10
4676 && r_type != (unsigned int) RELOC_BASE13
4677 && r_type != (unsigned int) RELOC_BASE22)
252b5132
RH		 4678 {
4679 const char *name;
4680
4681 if (h != NULL)
4682 name = h->root.root.string;
4683 else
4684 name = strings + GET_WORD (input_bfd, syms[r_index].e_strx);
1a72702b
AM		 4685 (*flaginfo->info->callbacks->undefined_symbol)
4686 (flaginfo->info, name, input_bfd, input_section, r_addr, TRUE);
252b5132
RH		 4687 }
4688
116c20d2
NC		 4689 if (r_type != (unsigned int) RELOC_SPARC_REV32)
4690 r = MY_final_link_relocate (howto_table_ext + r_type,
4691 input_bfd, input_section,
4692 contents, r_addr, relocation,
4693 r_addend);
4694 else
252b5132 4695 {
116c20d2 4696 bfd_vma x;
252b5132 4697
116c20d2
NC		 4698 x = bfd_get_32 (input_bfd, contents + r_addr);
4699 x = x + relocation + r_addend;
4700 bfd_putl32 (/*input_bfd,*/ x, contents + r_addr);
4701 r = bfd_reloc_ok;
4702 }
4703
4704 if (r != bfd_reloc_ok)
4705 {
4706 switch (r)
4707 {
4708 default:
4709 case bfd_reloc_outofrange:
4710 abort ();
4711 case bfd_reloc_overflow:
252b5132 4712 {
116c20d2 4713 const char *name;
252b5132 4714
116c20d2
NC		 4715 if (h != NULL)
4716 name = NULL;
4717 else if (r_extern
4718 || r_type == (unsigned int) RELOC_BASE10
4719 || r_type == (unsigned int) RELOC_BASE13
4720 || r_type == (unsigned int) RELOC_BASE22)
4721 name = strings + GET_WORD (input_bfd,
4722 syms[r_index].e_strx);
4723 else
4724 {
4725 asection *s;
4726
4727 s = aout_reloc_index_to_section (input_bfd, r_index);
4728 name = bfd_section_name (input_bfd, s);
4729 }
1a72702b
AM		 4730 (*flaginfo->info->callbacks->reloc_overflow)
4731 (flaginfo->info, (h ? &h->root : NULL), name,
4732 howto_table_ext[r_type].name,
4733 r_addend, input_bfd, input_section, r_addr);
252b5132 4734 }
116c20d2
NC		 4735 break;
4736 }
252b5132
RH		 4737 }
4738 }
4739 }
4740
b34976b6 4741 return TRUE;
252b5132
RH		 4742}
4743
116c20d2
NC		 4744/* Link an a.out section into the output file. */
4745
4746static bfd_boolean
57402f1e 4747aout_link_input_section (struct aout_final_link_info *flaginfo,
116c20d2
NC		 4748 bfd *input_bfd,
4749 asection *input_section,
4750 file_ptr *reloff_ptr,
4751 bfd_size_type rel_size)
4752{
4753 bfd_size_type input_size;
4754 void * relocs;
4755
4756 /* Get the section contents. */
4757 input_size = input_section->size;
4758 if (! bfd_get_section_contents (input_bfd, input_section,
57402f1e 4759 (void *) flaginfo->contents,
116c20d2
NC		 4760 (file_ptr) 0, input_size))
4761 return FALSE;
4762
4763 /* Read in the relocs if we haven't already done it. */
4764 if (aout_section_data (input_section) != NULL
4765 && aout_section_data (input_section)->relocs != NULL)
4766 relocs = aout_section_data (input_section)->relocs;
4767 else
4768 {
57402f1e 4769 relocs = flaginfo->relocs;
116c20d2
NC		 4770 if (rel_size > 0)
4771 {
4772 if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0
4773 || bfd_bread (relocs, rel_size, input_bfd) != rel_size)
4774 return FALSE;
4775 }
4776 }
4777
4778 /* Relocate the section contents. */
4779 if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE)
4780 {
57402f1e 4781 if (! aout_link_input_section_std (flaginfo, input_bfd, input_section,
116c20d2 4782 (struct reloc_std_external *) relocs,
57402f1e 4783 rel_size, flaginfo->contents))
116c20d2
NC		 4784 return FALSE;
4785 }
4786 else
4787 {
57402f1e 4788 if (! aout_link_input_section_ext (flaginfo, input_bfd, input_section,
116c20d2 4789 (struct reloc_ext_external *) relocs,
57402f1e 4790 rel_size, flaginfo->contents))
116c20d2
NC		 4791 return FALSE;
4792 }
4793
4794 /* Write out the section contents. */
57402f1e 4795 if (! bfd_set_section_contents (flaginfo->output_bfd,
116c20d2 4796 input_section->output_section,
57402f1e 4797 (void *) flaginfo->contents,
116c20d2
NC		 4798 (file_ptr) input_section->output_offset,
4799 input_size))
4800 return FALSE;
4801
4802 /* If we are producing relocatable output, the relocs were
4803 modified, and we now write them out. */
0e1862bb 4804 if (bfd_link_relocatable (flaginfo->info) && rel_size > 0)
116c20d2 4805 {
57402f1e 4806 if (bfd_seek (flaginfo->output_bfd, *reloff_ptr, SEEK_SET) != 0)
116c20d2 4807 return FALSE;
57402f1e 4808 if (bfd_bwrite (relocs, rel_size, flaginfo->output_bfd) != rel_size)
116c20d2
NC		 4809 return FALSE;
4810 *reloff_ptr += rel_size;
4811
4812 /* Assert that the relocs have not run into the symbols, and
4813 that if these are the text relocs they have not run into the
4814 data relocs. */
57402f1e
NC		 4815 BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (flaginfo->output_bfd)
4816 && (reloff_ptr != &flaginfo->treloff
116c20d2 4817 || (*reloff_ptr
57402f1e 4818 <= obj_datasec (flaginfo->output_bfd)->rel_filepos)));
116c20d2
NC		 4819 }
4820
4821 return TRUE;
4822}
4823
4824/* Adjust and write out the symbols for an a.out file. Set the new
4825 symbol indices into a symbol_map. */
252b5132 4826
b34976b6 4827static bfd_boolean
57402f1e 4828aout_link_write_symbols (struct aout_final_link_info *flaginfo, bfd *input_bfd)
252b5132 4829{
252b5132 4830 bfd *output_bfd;
116c20d2 4831 bfd_size_type sym_count;
252b5132 4832 char *strings;
116c20d2
NC		 4833 enum bfd_link_strip strip;
4834 enum bfd_link_discard discard;
4835 struct external_nlist *outsym;
4836 bfd_size_type strtab_index;
4837 struct external_nlist *sym;
4838 struct external_nlist *sym_end;
4839 struct aout_link_hash_entry **sym_hash;
252b5132 4840 int *symbol_map;
116c20d2
NC		 4841 bfd_boolean pass;
4842 bfd_boolean skip_next;
252b5132 4843
57402f1e 4844 output_bfd = flaginfo->output_bfd;
116c20d2
NC		 4845 sym_count = obj_aout_external_sym_count (input_bfd);
4846 strings = obj_aout_external_strings (input_bfd);
57402f1e
NC		 4847 strip = flaginfo->info->strip;
4848 discard = flaginfo->info->discard;
4849 outsym = flaginfo->output_syms;
252b5132 4850
116c20d2
NC		 4851 /* First write out a symbol for this object file, unless we are
4852 discarding such symbols. */
4853 if (strip != strip_all
4854 && (strip != strip_some
57402f1e 4855 || bfd_hash_lookup (flaginfo->info->keep_hash, input_bfd->filename,
116c20d2
NC		 4856 FALSE, FALSE) != NULL)
4857 && discard != discard_all)
4858 {
4859 H_PUT_8 (output_bfd, N_TEXT, outsym->e_type);
4860 H_PUT_8 (output_bfd, 0, outsym->e_other);
4861 H_PUT_16 (output_bfd, 0, outsym->e_desc);
57402f1e 4862 strtab_index = add_to_stringtab (output_bfd, flaginfo->strtab,
116c20d2
NC		 4863 input_bfd->filename, FALSE);
4864 if (strtab_index == (bfd_size_type) -1)
4865 return FALSE;
4866 PUT_WORD (output_bfd, strtab_index, outsym->e_strx);
4867 PUT_WORD (output_bfd,
4868 (bfd_get_section_vma (output_bfd,
4869 obj_textsec (input_bfd)->output_section)
4870 + obj_textsec (input_bfd)->output_offset),
4871 outsym->e_value);
4872 ++obj_aout_external_sym_count (output_bfd);
4873 ++outsym;
4874 }
252b5132 4875
116c20d2
NC		 4876 pass = FALSE;
4877 skip_next = FALSE;
4878 sym = obj_aout_external_syms (input_bfd);
4879 sym_end = sym + sym_count;
4880 sym_hash = obj_aout_sym_hashes (input_bfd);
57402f1e 4881 symbol_map = flaginfo->symbol_map;
116c20d2
NC		 4882 memset (symbol_map, 0, (size_t) sym_count * sizeof *symbol_map);
4883 for (; sym < sym_end; sym++, sym_hash++, symbol_map++)
252b5132 4884 {
116c20d2
NC		 4885 const char *name;
4886 int type;
4887 struct aout_link_hash_entry *h;
4888 bfd_boolean skip;
4889 asection *symsec;
4890 bfd_vma val = 0;
4891 bfd_boolean copy;
252b5132 4892
116c20d2 4893 /* We set *symbol_map to 0 above for all symbols. If it has
07d6d2b8
AM		 4894 already been set to -1 for this symbol, it means that we are
4895 discarding it because it appears in a duplicate header file.
4896 See the N_BINCL code below. */
116c20d2
NC		 4897 if (*symbol_map == -1)
4898 continue;
252b5132 4899
116c20d2 4900 /* Initialize *symbol_map to -1, which means that the symbol was
07d6d2b8
AM		 4901 not copied into the output file. We will change it later if
4902 we do copy the symbol over. */
116c20d2
NC		 4903 *symbol_map = -1;
4904
4905 type = H_GET_8 (input_bfd, sym->e_type);
4906 name = strings + GET_WORD (input_bfd, sym->e_strx);
4907
4908 h = NULL;
4909
4910 if (pass)
252b5132 4911 {
116c20d2
NC		 4912 /* Pass this symbol through. It is the target of an
4913 indirect or warning symbol. */
4914 val = GET_WORD (input_bfd, sym->e_value);
4915 pass = FALSE;
252b5132 4916 }
116c20d2 4917 else if (skip_next)
252b5132 4918 {
116c20d2
NC		 4919 /* Skip this symbol, which is the target of an indirect
4920 symbol that we have changed to no longer be an indirect
4921 symbol. */
4922 skip_next = FALSE;
4923 continue;
252b5132 4924 }
116c20d2
NC		 4925 else
4926 {
4927 struct aout_link_hash_entry *hresolve;
252b5132 4928
116c20d2
NC		 4929 /* We have saved the hash table entry for this symbol, if
4930 there is one. Note that we could just look it up again
4931 in the hash table, provided we first check that it is an
4932 external symbol. */
4933 h = *sym_hash;
252b5132 4934
116c20d2 4935 /* Use the name from the hash table, in case the symbol was
07d6d2b8 4936 wrapped. */
116c20d2
NC		 4937 if (h != NULL
4938 && h->root.type != bfd_link_hash_warning)
4939 name = h->root.root.string;
252b5132 4940
116c20d2
NC		 4941 /* If this is an indirect or warning symbol, then change
4942 hresolve to the base symbol. We also change *sym_hash so
4943 that the relocation routines relocate against the real
4944 symbol. */
4945 hresolve = h;
4946 if (h != (struct aout_link_hash_entry *) NULL
4947 && (h->root.type == bfd_link_hash_indirect
4948 || h->root.type == bfd_link_hash_warning))
252b5132 4949 {
116c20d2
NC		 4950 hresolve = (struct aout_link_hash_entry *) h->root.u.i.link;
4951 while (hresolve->root.type == bfd_link_hash_indirect
4952 || hresolve->root.type == bfd_link_hash_warning)
4953 hresolve = ((struct aout_link_hash_entry *)
4954 hresolve->root.u.i.link);
4955 *sym_hash = hresolve;
4956 }
4957
4958 /* If the symbol has already been written out, skip it. */
4959 if (h != NULL
4960 && h->written)
4961 {
4962 if ((type & N_TYPE) == N_INDR
4963 || type == N_WARNING)
4964 skip_next = TRUE;
4965 *symbol_map = h->indx;
4966 continue;
4967 }
4968
4969 /* See if we are stripping this symbol. */
4970 skip = FALSE;
4971 switch (strip)
4972 {
4973 case strip_none:
4974 break;
4975 case strip_debugger:
4976 if ((type & N_STAB) != 0)
4977 skip = TRUE;
4978 break;
4979 case strip_some:
57402f1e 4980 if (bfd_hash_lookup (flaginfo->info->keep_hash, name, FALSE, FALSE)
116c20d2
NC		 4981 == NULL)
4982 skip = TRUE;
4983 break;
4984 case strip_all:
4985 skip = TRUE;
4986 break;
4987 }
4988 if (skip)
4989 {
4990 if (h != NULL)
4991 h->written = TRUE;
4992 continue;
4993 }
4994
4995 /* Get the value of the symbol. */
4996 if ((type & N_TYPE) == N_TEXT
4997 || type == N_WEAKT)
4998 symsec = obj_textsec (input_bfd);
4999 else if ((type & N_TYPE) == N_DATA
5000 || type == N_WEAKD)
5001 symsec = obj_datasec (input_bfd);
5002 else if ((type & N_TYPE) == N_BSS
5003 || type == N_WEAKB)
5004 symsec = obj_bsssec (input_bfd);
5005 else if ((type & N_TYPE) == N_ABS
5006 || type == N_WEAKA)
5007 symsec = bfd_abs_section_ptr;
5008 else if (((type & N_TYPE) == N_INDR
5009 && (hresolve == NULL
5010 || (hresolve->root.type != bfd_link_hash_defined
5011 && hresolve->root.type != bfd_link_hash_defweak
5012 && hresolve->root.type != bfd_link_hash_common)))
5013 || type == N_WARNING)
5014 {
5015 /* Pass the next symbol through unchanged. The
5016 condition above for indirect symbols is so that if
5017 the indirect symbol was defined, we output it with
5018 the correct definition so the debugger will
5019 understand it. */
5020 pass = TRUE;
5021 val = GET_WORD (input_bfd, sym->e_value);
5022 symsec = NULL;
5023 }
5024 else if ((type & N_STAB) != 0)
5025 {
5026 val = GET_WORD (input_bfd, sym->e_value);
5027 symsec = NULL;
5028 }
5029 else
5030 {
5031 /* If we get here with an indirect symbol, it means that
5032 we are outputting it with a real definition. In such
5033 a case we do not want to output the next symbol,
5034 which is the target of the indirection. */
5035 if ((type & N_TYPE) == N_INDR)
5036 skip_next = TRUE;
5037
5038 symsec = NULL;
5039
5040 /* We need to get the value from the hash table. We use
5041 hresolve so that if we have defined an indirect
5042 symbol we output the final definition. */
5043 if (h == NULL)
5044 {
5045 switch (type & N_TYPE)
5046 {
5047 case N_SETT:
5048 symsec = obj_textsec (input_bfd);
5049 break;
5050 case N_SETD:
5051 symsec = obj_datasec (input_bfd);
5052 break;
5053 case N_SETB:
5054 symsec = obj_bsssec (input_bfd);
5055 break;
5056 case N_SETA:
5057 symsec = bfd_abs_section_ptr;
5058 break;
5059 default:
5060 val = 0;
5061 break;
5062 }
5063 }
5064 else if (hresolve->root.type == bfd_link_hash_defined
5065 || hresolve->root.type == bfd_link_hash_defweak)
252b5132 5066 {
116c20d2 5067 asection *input_section;
252b5132
RH		 5068 asection *output_section;
5069
116c20d2
NC		 5070 /* This case usually means a common symbol which was
5071 turned into a defined symbol. */
5072 input_section = hresolve->root.u.def.section;
5073 output_section = input_section->output_section;
5074 BFD_ASSERT (bfd_is_abs_section (output_section)
5075 || output_section->owner == output_bfd);
5076 val = (hresolve->root.u.def.value
5077 + bfd_get_section_vma (output_bfd, output_section)
5078 + input_section->output_offset);
5079
5080 /* Get the correct type based on the section. If
5081 this is a constructed set, force it to be
5082 globally visible. */
5083 if (type == N_SETT
5084 || type == N_SETD
5085 || type == N_SETB
5086 || type == N_SETA)
5087 type |= N_EXT;
5088
5089 type &=~ N_TYPE;
252b5132 5090
252b5132 5091 if (output_section == obj_textsec (output_bfd))
116c20d2
NC		 5092 type |= (hresolve->root.type == bfd_link_hash_defined
5093 ? N_TEXT
5094 : N_WEAKT);
252b5132 5095 else if (output_section == obj_datasec (output_bfd))
116c20d2
NC		 5096 type |= (hresolve->root.type == bfd_link_hash_defined
5097 ? N_DATA
5098 : N_WEAKD);
252b5132 5099 else if (output_section == obj_bsssec (output_bfd))
116c20d2
NC		 5100 type |= (hresolve->root.type == bfd_link_hash_defined
5101 ? N_BSS
5102 : N_WEAKB);
252b5132 5103 else
116c20d2
NC		 5104 type |= (hresolve->root.type == bfd_link_hash_defined
5105 ? N_ABS
5106 : N_WEAKA);
5107 }
5108 else if (hresolve->root.type == bfd_link_hash_common)
5109 val = hresolve->root.u.c.size;
5110 else if (hresolve->root.type == bfd_link_hash_undefweak)
5111 {
5112 val = 0;
5113 type = N_WEAKU;
252b5132
RH		 5114 }
5115 else
116c20d2
NC		 5116 val = 0;
5117 }
5118 if (symsec != NULL)
5119 val = (symsec->output_section->vma
5120 + symsec->output_offset
5121 + (GET_WORD (input_bfd, sym->e_value)
5122 - symsec->vma));
5123
5124 /* If this is a global symbol set the written flag, and if
5125 it is a local symbol see if we should discard it. */
5126 if (h != NULL)
5127 {
5128 h->written = TRUE;
5129 h->indx = obj_aout_external_sym_count (output_bfd);
5130 }
5131 else if ((type & N_TYPE) != N_SETT
5132 && (type & N_TYPE) != N_SETD
5133 && (type & N_TYPE) != N_SETB
5134 && (type & N_TYPE) != N_SETA)
5135 {
5136 switch (discard)
252b5132 5137 {
116c20d2
NC		 5138 case discard_none:
5139 case discard_sec_merge:
5140 break;
5141 case discard_l:
5142 if ((type & N_STAB) == 0
5143 && bfd_is_local_label_name (input_bfd, name))
5144 skip = TRUE;
5145 break;
5146 case discard_all:
5147 skip = TRUE;
5148 break;
5149 }
5150 if (skip)
5151 {
5152 pass = FALSE;
5153 continue;
5154 }
5155 }
252b5132 5156
116c20d2
NC		 5157 /* An N_BINCL symbol indicates the start of the stabs
5158 entries for a header file. We need to scan ahead to the
5159 next N_EINCL symbol, ignoring nesting, adding up all the
5160 characters in the symbol names, not including the file
5161 numbers in types (the first number after an open
5162 parenthesis). */
5163 if (type == (int) N_BINCL)
5164 {
5165 struct external_nlist *incl_sym;
5166 int nest;
5167 struct aout_link_includes_entry *incl_entry;
5168 struct aout_link_includes_totals *t;
5169
5170 val = 0;
5171 nest = 0;
5172 for (incl_sym = sym + 1; incl_sym < sym_end; incl_sym++)
5173 {
5174 int incl_type;
5175
5176 incl_type = H_GET_8 (input_bfd, incl_sym->e_type);
5177 if (incl_type == (int) N_EINCL)
252b5132 5178 {
116c20d2
NC		 5179 if (nest == 0)
5180 break;
5181 --nest;
5182 }
5183 else if (incl_type == (int) N_BINCL)
5184 ++nest;
5185 else if (nest == 0)
5186 {
5187 const char *s;
5188
5189 s = strings + GET_WORD (input_bfd, incl_sym->e_strx);
5190 for (; *s != '\0'; s++)
252b5132 5191 {
116c20d2
NC		 5192 val += *s;
5193 if (*s == '(')
252b5132 5194 {
116c20d2
NC		 5195 /* Skip the file number. */
5196 ++s;
5197 while (ISDIGIT (*s))
5198 ++s;
5199 --s;
252b5132 5200 }
252b5132 5201 }
116c20d2
NC		 5202 }
5203 }
252b5132 5204
116c20d2 5205 /* If we have already included a header file with the
07d6d2b8
AM		 5206 same value, then replace this one with an N_EXCL
5207 symbol. */
57402f1e
NC		 5208 copy = (bfd_boolean) (! flaginfo->info->keep_memory);
5209 incl_entry = aout_link_includes_lookup (&flaginfo->includes,
116c20d2
NC		 5210 name, TRUE, copy);
5211 if (incl_entry == NULL)
5212 return FALSE;
5213 for (t = incl_entry->totals; t != NULL; t = t->next)
5214 if (t->total == val)
5215 break;
5216 if (t == NULL)
5217 {
5218 /* This is the first time we have seen this header
07d6d2b8 5219 file with this set of stabs strings. */
a50b1753 5220 t = (struct aout_link_includes_totals *)
07d6d2b8 5221 bfd_hash_allocate (&flaginfo->includes.root,
116c20d2
NC		 5222 sizeof *t);
5223 if (t == NULL)
5224 return FALSE;
5225 t->total = val;
5226 t->next = incl_entry->totals;
5227 incl_entry->totals = t;
5228 }
5229 else
5230 {
5231 int *incl_map;
5232
5233 /* This is a duplicate header file. We must change
07d6d2b8
AM		 5234 it to be an N_EXCL entry, and mark all the
5235 included symbols to prevent outputting them. */
116c20d2
NC		 5236 type = (int) N_EXCL;
5237
5238 nest = 0;
5239 for (incl_sym = sym + 1, incl_map = symbol_map + 1;
5240 incl_sym < sym_end;
5241 incl_sym++, incl_map++)
5242 {
5243 int incl_type;
5244
5245 incl_type = H_GET_8 (input_bfd, incl_sym->e_type);
5246 if (incl_type == (int) N_EINCL)
5247 {
5248 if (nest == 0)
5249 {
5250 *incl_map = -1;
5251 break;
5252 }
5253 --nest;
252b5132 5254 }
116c20d2
NC		 5255 else if (incl_type == (int) N_BINCL)
5256 ++nest;
5257 else if (nest == 0)
5258 *incl_map = -1;
252b5132 5259 }
252b5132
RH		 5260 }
5261 }
116c20d2
NC		 5262 }
5263
5264 /* Copy this symbol into the list of symbols we are going to
5265 write out. */
5266 H_PUT_8 (output_bfd, type, outsym->e_type);
5267 H_PUT_8 (output_bfd, H_GET_8 (input_bfd, sym->e_other), outsym->e_other);
5268 H_PUT_16 (output_bfd, H_GET_16 (input_bfd, sym->e_desc), outsym->e_desc);
5269 copy = FALSE;
57402f1e 5270 if (! flaginfo->info->keep_memory)
116c20d2
NC		 5271 {
5272 /* name points into a string table which we are going to
5273 free. If there is a hash table entry, use that string.
5274 Otherwise, copy name into memory. */
5275 if (h != NULL)
5276 name = h->root.root.string;
252b5132 5277 else
116c20d2
NC		 5278 copy = TRUE;
5279 }
57402f1e 5280 strtab_index = add_to_stringtab (output_bfd, flaginfo->strtab,
116c20d2
NC		 5281 name, copy);
5282 if (strtab_index == (bfd_size_type) -1)
5283 return FALSE;
5284 PUT_WORD (output_bfd, strtab_index, outsym->e_strx);
5285 PUT_WORD (output_bfd, val, outsym->e_value);
5286 *symbol_map = obj_aout_external_sym_count (output_bfd);
5287 ++obj_aout_external_sym_count (output_bfd);
5288 ++outsym;
5289 }
252b5132 5290
116c20d2 5291 /* Write out the output symbols we have just constructed. */
57402f1e 5292 if (outsym > flaginfo->output_syms)
116c20d2
NC		 5293 {
5294 bfd_size_type outsym_size;
252b5132 5295
57402f1e 5296 if (bfd_seek (output_bfd, flaginfo->symoff, SEEK_SET) != 0)
116c20d2 5297 return FALSE;
57402f1e 5298 outsym_size = outsym - flaginfo->output_syms;
116c20d2 5299 outsym_size *= EXTERNAL_NLIST_SIZE;
57402f1e 5300 if (bfd_bwrite ((void *) flaginfo->output_syms, outsym_size, output_bfd)
116c20d2
NC		 5301 != outsym_size)
5302 return FALSE;
57402f1e 5303 flaginfo->symoff += outsym_size;
116c20d2 5304 }
252b5132 5305
116c20d2
NC		 5306 return TRUE;
5307}
252b5132 5308
116c20d2 5309/* Link an a.out input BFD into the output file. */
252b5132 5310
116c20d2 5311static bfd_boolean
57402f1e 5312aout_link_input_bfd (struct aout_final_link_info *flaginfo, bfd *input_bfd)
116c20d2 5313{
116c20d2 5314 BFD_ASSERT (bfd_get_format (input_bfd) == bfd_object);
252b5132 5315
116c20d2
NC		 5316 /* If this is a dynamic object, it may need special handling. */
5317 if ((input_bfd->flags & DYNAMIC) != 0
5318 && aout_backend_info (input_bfd)->link_dynamic_object != NULL)
5319 return ((*aout_backend_info (input_bfd)->link_dynamic_object)
57402f1e 5320 (flaginfo->info, input_bfd));
252b5132 5321
116c20d2 5322 /* Get the symbols. We probably have them already, unless
57402f1e 5323 flaginfo->info->keep_memory is FALSE. */
116c20d2
NC		 5324 if (! aout_get_external_symbols (input_bfd))
5325 return FALSE;
252b5132 5326
116c20d2 5327 /* Write out the symbols and get a map of the new indices. The map
57402f1e
NC		 5328 is placed into flaginfo->symbol_map. */
5329 if (! aout_link_write_symbols (flaginfo, input_bfd))
116c20d2 5330 return FALSE;
252b5132 5331
116c20d2
NC		 5332 /* Relocate and write out the sections. These functions use the
5333 symbol map created by aout_link_write_symbols. The linker_mark
5334 field will be set if these sections are to be included in the
5335 link, which will normally be the case. */
5336 if (obj_textsec (input_bfd)->linker_mark)
5337 {
57402f1e 5338 if (! aout_link_input_section (flaginfo, input_bfd,
116c20d2 5339 obj_textsec (input_bfd),
57402f1e 5340 &flaginfo->treloff,
116c20d2
NC		 5341 exec_hdr (input_bfd)->a_trsize))
5342 return FALSE;
5343 }
5344 if (obj_datasec (input_bfd)->linker_mark)
5345 {
57402f1e 5346 if (! aout_link_input_section (flaginfo, input_bfd,
116c20d2 5347 obj_datasec (input_bfd),
57402f1e 5348 &flaginfo->dreloff,
116c20d2
NC		 5349 exec_hdr (input_bfd)->a_drsize))
5350 return FALSE;
5351 }
5352
5353 /* If we are not keeping memory, we don't need the symbols any
5354 longer. We still need them if we are keeping memory, because the
5355 strings in the hash table point into them. */
57402f1e 5356 if (! flaginfo->info->keep_memory)
116c20d2
NC		 5357 {
5358 if (! aout_link_free_symbols (input_bfd))
5359 return FALSE;
5360 }
5361
5362 return TRUE;
5363}
5364
5365/* Do the final link step. This is called on the output BFD. The
5366 INFO structure should point to a list of BFDs linked through the
c72f2fb2 5367 link.next field which can be used to find each BFD which takes part
116c20d2
NC		 5368 in the output. Also, each section in ABFD should point to a list
5369 of bfd_link_order structures which list all the input sections for
5370 the output section. */
5371
5372bfd_boolean
5373NAME (aout, final_link) (bfd *abfd,
5374 struct bfd_link_info *info,
5375 void (*callback) (bfd *, file_ptr *, file_ptr *, file_ptr *))
5376{
5377 struct aout_final_link_info aout_info;
5378 bfd_boolean includes_hash_initialized = FALSE;
5379 bfd *sub;
5380 bfd_size_type trsize, drsize;
5381 bfd_size_type max_contents_size;
5382 bfd_size_type max_relocs_size;
5383 bfd_size_type max_sym_count;
116c20d2
NC		 5384 struct bfd_link_order *p;
5385 asection *o;
5386 bfd_boolean have_link_order_relocs;
5387
0e1862bb 5388 if (bfd_link_pic (info))
116c20d2
NC		 5389 abfd->flags |= DYNAMIC;
5390
5391 aout_info.info = info;
5392 aout_info.output_bfd = abfd;
5393 aout_info.contents = NULL;
5394 aout_info.relocs = NULL;
5395 aout_info.symbol_map = NULL;
5396 aout_info.output_syms = NULL;
252b5132 5397
66eb6687
AM		 5398 if (!bfd_hash_table_init_n (&aout_info.includes.root,
5399 aout_link_includes_newfunc,
5400 sizeof (struct aout_link_includes_entry),
5401 251))
116c20d2
NC		 5402 goto error_return;
5403 includes_hash_initialized = TRUE;
252b5132 5404
116c20d2
NC		 5405 /* Figure out the largest section size. Also, if generating
5406 relocatable output, count the relocs. */
5407 trsize = 0;
5408 drsize = 0;
5409 max_contents_size = 0;
5410 max_relocs_size = 0;
5411 max_sym_count = 0;
c72f2fb2 5412 for (sub = info->input_bfds; sub != NULL; sub = sub->link.next)
116c20d2
NC		 5413 {
5414 bfd_size_type sz;
252b5132 5415
0e1862bb 5416 if (bfd_link_relocatable (info))
116c20d2
NC		 5417 {
5418 if (bfd_get_flavour (sub) == bfd_target_aout_flavour)
252b5132 5419 {
116c20d2
NC		 5420 trsize += exec_hdr (sub)->a_trsize;
5421 drsize += exec_hdr (sub)->a_drsize;
252b5132 5422 }
252b5132
RH		 5423 else
5424 {
116c20d2
NC		 5425 /* FIXME: We need to identify the .text and .data sections
5426 and call get_reloc_upper_bound and canonicalize_reloc to
5427 work out the number of relocs needed, and then multiply
5428 by the reloc size. */
4eca0228 5429 _bfd_error_handler
695344c0 5430 /* xgettext:c-format */
871b3ab2 5431 (_("%pB: relocatable link from %s to %s not supported"),
dae82561 5432 abfd, sub->xvec->name, abfd->xvec->name);
116c20d2
NC		 5433 bfd_set_error (bfd_error_invalid_operation);
5434 goto error_return;
252b5132 5435 }
116c20d2 5436 }
252b5132 5437
116c20d2
NC		 5438 if (bfd_get_flavour (sub) == bfd_target_aout_flavour)
5439 {
5440 sz = obj_textsec (sub)->size;
5441 if (sz > max_contents_size)
5442 max_contents_size = sz;
5443 sz = obj_datasec (sub)->size;
5444 if (sz > max_contents_size)
5445 max_contents_size = sz;
252b5132 5446
116c20d2
NC		 5447 sz = exec_hdr (sub)->a_trsize;
5448 if (sz > max_relocs_size)
5449 max_relocs_size = sz;
5450 sz = exec_hdr (sub)->a_drsize;
5451 if (sz > max_relocs_size)
5452 max_relocs_size = sz;
252b5132 5453
116c20d2
NC		 5454 sz = obj_aout_external_sym_count (sub);
5455 if (sz > max_sym_count)
5456 max_sym_count = sz;
252b5132
RH		 5457 }
5458 }
5459
0e1862bb 5460 if (bfd_link_relocatable (info))
116c20d2
NC		 5461 {
5462 if (obj_textsec (abfd) != NULL)
5463 trsize += (_bfd_count_link_order_relocs (obj_textsec (abfd)
8423293d 5464 ->map_head.link_order)
116c20d2
NC		 5465 * obj_reloc_entry_size (abfd));
5466 if (obj_datasec (abfd) != NULL)
5467 drsize += (_bfd_count_link_order_relocs (obj_datasec (abfd)
8423293d 5468 ->map_head.link_order)
116c20d2
NC		 5469 * obj_reloc_entry_size (abfd));
5470 }
252b5132 5471
116c20d2
NC		 5472 exec_hdr (abfd)->a_trsize = trsize;
5473 exec_hdr (abfd)->a_drsize = drsize;
252b5132 5474
116c20d2 5475 exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd);
252b5132 5476
116c20d2
NC		 5477 /* Adjust the section sizes and vmas according to the magic number.
5478 This sets a_text, a_data and a_bss in the exec_hdr and sets the
5479 filepos for each section. */
3a8c4a5b 5480 if (! NAME (aout, adjust_sizes_and_vmas) (abfd))
116c20d2 5481 goto error_return;
252b5132 5482
116c20d2
NC		 5483 /* The relocation and symbol file positions differ among a.out
5484 targets. We are passed a callback routine from the backend
5485 specific code to handle this.
5486 FIXME: At this point we do not know how much space the symbol
5487 table will require. This will not work for any (nonstandard)
5488 a.out target that needs to know the symbol table size before it
dc12032b 5489 can compute the relocation file positions. */
116c20d2
NC		 5490 (*callback) (abfd, &aout_info.treloff, &aout_info.dreloff,
5491 &aout_info.symoff);
5492 obj_textsec (abfd)->rel_filepos = aout_info.treloff;
5493 obj_datasec (abfd)->rel_filepos = aout_info.dreloff;
5494 obj_sym_filepos (abfd) = aout_info.symoff;
252b5132 5495
116c20d2
NC		 5496 /* We keep a count of the symbols as we output them. */
5497 obj_aout_external_sym_count (abfd) = 0;
5498
5499 /* We accumulate the string table as we write out the symbols. */
5500 aout_info.strtab = _bfd_stringtab_init ();
5501 if (aout_info.strtab == NULL)
5502 goto error_return;
5503
5504 /* Allocate buffers to hold section contents and relocs. */
a50b1753 5505 aout_info.contents = (bfd_byte *) bfd_malloc (max_contents_size);
116c20d2 5506 aout_info.relocs = bfd_malloc (max_relocs_size);
c38eb2a6 5507 aout_info.symbol_map = (int *) bfd_malloc (max_sym_count * sizeof (int));
a50b1753
NC		 5508 aout_info.output_syms = (struct external_nlist *)
5509 bfd_malloc ((max_sym_count + 1) * sizeof (struct external_nlist));
116c20d2
NC		 5510 if ((aout_info.contents == NULL && max_contents_size != 0)
5511 || (aout_info.relocs == NULL && max_relocs_size != 0)
5512 || (aout_info.symbol_map == NULL && max_sym_count != 0)
5513 || aout_info.output_syms == NULL)
5514 goto error_return;
5515
5516 /* If we have a symbol named __DYNAMIC, force it out now. This is
5517 required by SunOS. Doing this here rather than in sunos.c is a
5518 hack, but it's easier than exporting everything which would be
5519 needed. */
5520 {
5521 struct aout_link_hash_entry *h;
5522
5523 h = aout_link_hash_lookup (aout_hash_table (info), "__DYNAMIC",
5524 FALSE, FALSE, FALSE);
5525 if (h != NULL)
7686d77d 5526 aout_link_write_other_symbol (&h->root.root, &aout_info);
116c20d2
NC		 5527 }
5528
5529 /* The most time efficient way to do the link would be to read all
5530 the input object files into memory and then sort out the
5531 information into the output file. Unfortunately, that will
5532 probably use too much memory. Another method would be to step
5533 through everything that composes the text section and write it
5534 out, and then everything that composes the data section and write
5535 it out, and then write out the relocs, and then write out the
5536 symbols. Unfortunately, that requires reading stuff from each
5537 input file several times, and we will not be able to keep all the
5538 input files open simultaneously, and reopening them will be slow.
5539
5540 What we do is basically process one input file at a time. We do
5541 everything we need to do with an input file once--copy over the
5542 section contents, handle the relocation information, and write
5543 out the symbols--and then we throw away the information we read
5544 from it. This approach requires a lot of lseeks of the output
5545 file, which is unfortunate but still faster than reopening a lot
5546 of files.
5547
5548 We use the output_has_begun field of the input BFDs to see
5549 whether we have already handled it. */
c72f2fb2 5550 for (sub = info->input_bfds; sub != NULL; sub = sub->link.next)
116c20d2 5551 sub->output_has_begun = FALSE;
252b5132 5552
116c20d2
NC		 5553 /* Mark all sections which are to be included in the link. This
5554 will normally be every section. We need to do this so that we
5555 can identify any sections which the linker has decided to not
5556 include. */
5557 for (o = abfd->sections; o != NULL; o = o->next)
252b5132 5558 {
8423293d 5559 for (p = o->map_head.link_order; p != NULL; p = p->next)
116c20d2
NC		 5560 if (p->type == bfd_indirect_link_order)
5561 p->u.indirect.section->linker_mark = TRUE;
252b5132
RH		 5562 }
5563
116c20d2
NC		 5564 have_link_order_relocs = FALSE;
5565 for (o = abfd->sections; o != NULL; o = o->next)
252b5132 5566 {
8423293d 5567 for (p = o->map_head.link_order;
116c20d2
NC		 5568 p != NULL;
5569 p = p->next)
252b5132 5570 {
116c20d2
NC		 5571 if (p->type == bfd_indirect_link_order
5572 && (bfd_get_flavour (p->u.indirect.section->owner)
5573 == bfd_target_aout_flavour))
252b5132 5574 {
116c20d2
NC		 5575 bfd *input_bfd;
5576
5577 input_bfd = p->u.indirect.section->owner;
5578 if (! input_bfd->output_has_begun)
252b5132 5579 {
116c20d2
NC		 5580 if (! aout_link_input_bfd (&aout_info, input_bfd))
5581 goto error_return;
5582 input_bfd->output_has_begun = TRUE;
252b5132 5583 }
252b5132 5584 }
116c20d2
NC		 5585 else if (p->type == bfd_section_reloc_link_order
5586 || p->type == bfd_symbol_reloc_link_order)
5587 {
5588 /* These are handled below. */
5589 have_link_order_relocs = TRUE;
5590 }
5591 else
5592 {
5593 if (! _bfd_default_link_order (abfd, info, o, p))
5594 goto error_return;
5595 }
252b5132
RH		 5596 }
5597 }
252b5132 5598
116c20d2 5599 /* Write out any symbols that we have not already written out. */
7686d77d
AM		 5600 bfd_hash_traverse (&info->hash->table,
5601 aout_link_write_other_symbol,
5602 &aout_info);
116c20d2
NC		 5603
5604 /* Now handle any relocs we were asked to create by the linker.
5605 These did not come from any input file. We must do these after
5606 we have written out all the symbols, so that we know the symbol
5607 indices to use. */
5608 if (have_link_order_relocs)
5609 {
5610 for (o = abfd->sections; o != NULL; o = o->next)
252b5132 5611 {
8423293d 5612 for (p = o->map_head.link_order;
116c20d2
NC		 5613 p != NULL;
5614 p = p->next)
5615 {
5616 if (p->type == bfd_section_reloc_link_order
5617 || p->type == bfd_symbol_reloc_link_order)
5618 {
5619 if (! aout_link_reloc_link_order (&aout_info, o, p))
5620 goto error_return;
5621 }
5622 }
252b5132 5623 }
116c20d2 5624 }
252b5132 5625
116c20d2
NC		 5626 if (aout_info.contents != NULL)
5627 {
5628 free (aout_info.contents);
5629 aout_info.contents = NULL;
5630 }
5631 if (aout_info.relocs != NULL)
5632 {
5633 free (aout_info.relocs);
5634 aout_info.relocs = NULL;
5635 }
5636 if (aout_info.symbol_map != NULL)
5637 {
5638 free (aout_info.symbol_map);
5639 aout_info.symbol_map = NULL;
5640 }
5641 if (aout_info.output_syms != NULL)
5642 {
5643 free (aout_info.output_syms);
5644 aout_info.output_syms = NULL;
5645 }
5646 if (includes_hash_initialized)
5647 {
5648 bfd_hash_table_free (&aout_info.includes.root);
5649 includes_hash_initialized = FALSE;
5650 }
252b5132 5651
116c20d2
NC		 5652 /* Finish up any dynamic linking we may be doing. */
5653 if (aout_backend_info (abfd)->finish_dynamic_link != NULL)
5654 {
5655 if (! (*aout_backend_info (abfd)->finish_dynamic_link) (abfd, info))
5656 goto error_return;
252b5132
RH		 5657 }
5658
116c20d2
NC		 5659 /* Update the header information. */
5660 abfd->symcount = obj_aout_external_sym_count (abfd);
5661 exec_hdr (abfd)->a_syms = abfd->symcount * EXTERNAL_NLIST_SIZE;
5662 obj_str_filepos (abfd) = obj_sym_filepos (abfd) + exec_hdr (abfd)->a_syms;
5663 obj_textsec (abfd)->reloc_count =
5664 exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd);
5665 obj_datasec (abfd)->reloc_count =
5666 exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd);
252b5132 5667
116c20d2 5668 /* Write out the string table, unless there are no symbols. */
f6e688f7
AM		 5669 if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0)
5670 goto error_return;
116c20d2
NC		 5671 if (abfd->symcount > 0)
5672 {
f6e688f7 5673 if (!emit_stringtab (abfd, aout_info.strtab))
116c20d2
NC		 5674 goto error_return;
5675 }
f6e688f7 5676 else
116c20d2 5677 {
f6e688f7 5678 bfd_byte b[BYTES_IN_WORD];
252b5132 5679
f6e688f7
AM		 5680 memset (b, 0, BYTES_IN_WORD);
5681 if (bfd_bwrite (b, (bfd_size_type) BYTES_IN_WORD, abfd) != BYTES_IN_WORD)
116c20d2
NC		 5682 goto error_return;
5683 }
252b5132 5684
b34976b6 5685 return TRUE;
116c20d2
NC		 5686
5687 error_return:
5688 if (aout_info.contents != NULL)
5689 free (aout_info.contents);
5690 if (aout_info.relocs != NULL)
5691 free (aout_info.relocs);
5692 if (aout_info.symbol_map != NULL)
5693 free (aout_info.symbol_map);
5694 if (aout_info.output_syms != NULL)
5695 free (aout_info.output_syms);
5696 if (includes_hash_initialized)
5697 bfd_hash_table_free (&aout_info.includes.root);
5698 return FALSE;
252b5132 5699}
GDB Binutils - Deliverables
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