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252b5132 1/* BFD semi-generic back-end for a.out binaries.
6f2750fe 2 Copyright (C) 1990-2016 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
36 adds to the basic a.out functions support for sun3, sun4, 386
37 and 29k a.out files, to create a target jump vector for a
38 specific target.
39
40 This information is further split out into more specific files
41 for each machine, including @file{sunos.c} for sun3 and sun4,
42 @file{newsos3.c} for the Sony NEWS, and @file{demo64.c} for a
43 demonstration of a 64 bit a.out format.
44
45 The base file @file{aoutx.h} defines general mechanisms for
46 reading and writing records to and from disk and various
47 other methods which BFD requires. It is included by
48 @file{aout32.c} and @file{aout64.c} to form the names
49 <<aout_32_swap_exec_header_in>>, <<aout_64_swap_exec_header_in>>, etc.
50
51 As an example, this is what goes on to make the back end for a
52 sun4, from @file{aout32.c}:
53
54| #define ARCH_SIZE 32
55| #include "aoutx.h"
56
57 Which exports names:
58
59| ...
60| aout_32_canonicalize_reloc
61| aout_32_find_nearest_line
62| aout_32_get_lineno
63| aout_32_get_reloc_upper_bound
64| ...
65
66 from @file{sunos.c}:
67
68| #define TARGET_NAME "a.out-sunos-big"
6d00b590 69| #define VECNAME sparc_aout_sunos_be_vec
252b5132
RH		 70| #include "aoutf1.h"
71
72 requires all the names from @file{aout32.c}, and produces the jump vector
73
6d00b590 74| sparc_aout_sunos_be_vec
252b5132
RH		 75
76 The file @file{host-aout.c} is a special case. It is for a large set
77 of hosts that use ``more or less standard'' a.out files, and
78 for which cross-debugging is not interesting. It uses the
79 standard 32-bit a.out support routines, but determines the
80 file offsets and addresses of the text, data, and BSS
81 sections, the machine architecture and machine type, and the
82 entry point address, in a host-dependent manner. Once these
83 values have been determined, generic code is used to handle
84 the object file.
85
86 When porting it to run on a new system, you must supply:
87
88| HOST_PAGE_SIZE
89| HOST_SEGMENT_SIZE
90| HOST_MACHINE_ARCH (optional)
91| HOST_MACHINE_MACHINE (optional)
92| HOST_TEXT_START_ADDR
93| HOST_STACK_END_ADDR
94
95 in the file @file{../include/sys/h-@var{XXX}.h} (for your host). These
96 values, plus the structures and macros defined in @file{a.out.h} on
97 your host system, will produce a BFD target that will access
98 ordinary a.out files on your host. To configure a new machine
99 to use @file{host-aout.c}, specify:
100
101| TDEFAULTS = -DDEFAULT_VECTOR=host_aout_big_vec
102| TDEPFILES= host-aout.o trad-core.o
103
1110793a 104 in the @file{config/@var{XXX}.mt} file, and modify @file{configure.ac}
252b5132
RH		 105 to use the
106 @file{@var{XXX}.mt} file (by setting "<<bfd_target=XXX>>") when your
5ed6aba4 107 configuration is selected. */
252b5132
RH		 108
109/* Some assumptions:
110 * Any BFD with D_PAGED set is ZMAGIC, and vice versa.
111 Doesn't matter what the setting of WP_TEXT is on output, but it'll
112 get set on input.
113 * Any BFD with D_PAGED clear and WP_TEXT set is NMAGIC.
114 * Any BFD with both flags clear is OMAGIC.
115 (Just want to make these explicit, so the conditions tested in this
116 file make sense if you're more familiar with a.out than with BFD.) */
117
118#define KEEPIT udata.i
119
252b5132 120#include "sysdep.h"
3db64b00 121#include "bfd.h"
3882b010 122#include "safe-ctype.h"
252b5132
RH		 123#include "bfdlink.h"
124
125#include "libaout.h"
126#include "libbfd.h"
127#include "aout/aout64.h"
128#include "aout/stab_gnu.h"
129#include "aout/ar.h"
130
252b5132
RH		 131/*
132SUBSECTION
133 Relocations
134
135DESCRIPTION
136 The file @file{aoutx.h} provides for both the @emph{standard}
137 and @emph{extended} forms of a.out relocation records.
138
139 The standard records contain only an
140 address, a symbol index, and a type field. The extended records
141 (used on 29ks and sparcs) also have a full integer for an
5ed6aba4 142 addend. */
252b5132 143
252b5132
RH		 144#ifndef CTOR_TABLE_RELOC_HOWTO
145#define CTOR_TABLE_RELOC_IDX 2
923f08ff
AM		 146#define CTOR_TABLE_RELOC_HOWTO(BFD) \
147 ((obj_reloc_entry_size (BFD) == RELOC_EXT_SIZE \
148 ? howto_table_ext : howto_table_std) \
149 + CTOR_TABLE_RELOC_IDX)
252b5132
RH		 150#endif
151
152#ifndef MY_swap_std_reloc_in
116c20d2 153#define MY_swap_std_reloc_in NAME (aout, swap_std_reloc_in)
252b5132
RH		 154#endif
155
1642229e 156#ifndef MY_swap_ext_reloc_in
116c20d2 157#define MY_swap_ext_reloc_in NAME (aout, swap_ext_reloc_in)
1642229e
HPN		 158#endif
159
252b5132 160#ifndef MY_swap_std_reloc_out
116c20d2 161#define MY_swap_std_reloc_out NAME (aout, swap_std_reloc_out)
252b5132
RH		 162#endif
163
1642229e 164#ifndef MY_swap_ext_reloc_out
116c20d2 165#define MY_swap_ext_reloc_out NAME (aout, swap_ext_reloc_out)
1642229e
HPN		 166#endif
167
252b5132
RH		 168#ifndef MY_final_link_relocate
169#define MY_final_link_relocate _bfd_final_link_relocate
170#endif
171
172#ifndef MY_relocate_contents
173#define MY_relocate_contents _bfd_relocate_contents
174#endif
175
116c20d2
NC		 176#define howto_table_ext NAME (aout, ext_howto_table)
177#define howto_table_std NAME (aout, std_howto_table)
252b5132
RH		 178
179reloc_howto_type howto_table_ext[] =
180{
116c20d2
NC		 181 /* Type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone. */
182 HOWTO (RELOC_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, 0, "8", FALSE, 0, 0x000000ff, FALSE),
183 HOWTO (RELOC_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, 0, "16", FALSE, 0, 0x0000ffff, FALSE),
184 HOWTO (RELOC_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, 0, "32", FALSE, 0, 0xffffffff, FALSE),
185 HOWTO (RELOC_DISP8, 0, 0, 8, TRUE, 0, complain_overflow_signed, 0, "DISP8", FALSE, 0, 0x000000ff, FALSE),
186 HOWTO (RELOC_DISP16, 0, 1, 16, TRUE, 0, complain_overflow_signed, 0, "DISP16", FALSE, 0, 0x0000ffff, FALSE),
187 HOWTO (RELOC_DISP32, 0, 2, 32, TRUE, 0, complain_overflow_signed, 0, "DISP32", FALSE, 0, 0xffffffff, FALSE),
188 HOWTO (RELOC_WDISP30, 2, 2, 30, TRUE, 0, complain_overflow_signed, 0, "WDISP30", FALSE, 0, 0x3fffffff, FALSE),
189 HOWTO (RELOC_WDISP22, 2, 2, 22, TRUE, 0, complain_overflow_signed, 0, "WDISP22", FALSE, 0, 0x003fffff, FALSE),
190 HOWTO (RELOC_HI22, 10, 2, 22, FALSE, 0, complain_overflow_bitfield, 0, "HI22", FALSE, 0, 0x003fffff, FALSE),
191 HOWTO (RELOC_22, 0, 2, 22, FALSE, 0, complain_overflow_bitfield, 0, "22", FALSE, 0, 0x003fffff, FALSE),
192 HOWTO (RELOC_13, 0, 2, 13, FALSE, 0, complain_overflow_bitfield, 0, "13", FALSE, 0, 0x00001fff, FALSE),
193 HOWTO (RELOC_LO10, 0, 2, 10, FALSE, 0, complain_overflow_dont, 0, "LO10", FALSE, 0, 0x000003ff, FALSE),
194 HOWTO (RELOC_SFA_BASE,0, 2, 32, FALSE, 0, complain_overflow_bitfield, 0, "SFA_BASE", FALSE, 0, 0xffffffff, FALSE),
195 HOWTO (RELOC_SFA_OFF13,0, 2, 32, FALSE, 0, complain_overflow_bitfield, 0, "SFA_OFF13", FALSE, 0, 0xffffffff, FALSE),
196 HOWTO (RELOC_BASE10, 0, 2, 10, FALSE, 0, complain_overflow_dont, 0, "BASE10", FALSE, 0, 0x000003ff, FALSE),
197 HOWTO (RELOC_BASE13, 0, 2, 13, FALSE, 0, complain_overflow_signed, 0, "BASE13", FALSE, 0, 0x00001fff, FALSE),
198 HOWTO (RELOC_BASE22, 10, 2, 22, FALSE, 0, complain_overflow_bitfield, 0, "BASE22", FALSE, 0, 0x003fffff, FALSE),
199 HOWTO (RELOC_PC10, 0, 2, 10, TRUE, 0, complain_overflow_dont, 0, "PC10", FALSE, 0, 0x000003ff, TRUE),
200 HOWTO (RELOC_PC22, 10, 2, 22, TRUE, 0, complain_overflow_signed, 0, "PC22", FALSE, 0, 0x003fffff, TRUE),
201 HOWTO (RELOC_JMP_TBL, 2, 2, 30, TRUE, 0, complain_overflow_signed, 0, "JMP_TBL", FALSE, 0, 0x3fffffff, FALSE),
202 HOWTO (RELOC_SEGOFF16,0, 2, 0, FALSE, 0, complain_overflow_bitfield, 0, "SEGOFF16", FALSE, 0, 0x00000000, FALSE),
203 HOWTO (RELOC_GLOB_DAT,0, 2, 0, FALSE, 0, complain_overflow_bitfield, 0, "GLOB_DAT", FALSE, 0, 0x00000000, FALSE),
204 HOWTO (RELOC_JMP_SLOT,0, 2, 0, FALSE, 0, complain_overflow_bitfield, 0, "JMP_SLOT", FALSE, 0, 0x00000000, FALSE),
205 HOWTO (RELOC_RELATIVE,0, 2, 0, FALSE, 0, complain_overflow_bitfield, 0, "RELATIVE", FALSE, 0, 0x00000000, FALSE),
6346d5ca
AM		 206 HOWTO (0, 0, 3, 0, FALSE, 0, complain_overflow_dont, 0, "R_SPARC_NONE",FALSE, 0, 0x00000000, TRUE),
207 HOWTO (0, 0, 3, 0, FALSE, 0, complain_overflow_dont, 0, "R_SPARC_NONE",FALSE, 0, 0x00000000, TRUE),
252b5132 208#define RELOC_SPARC_REV32 RELOC_WDISP19
116c20d2 209 HOWTO (RELOC_SPARC_REV32, 0, 2, 32, FALSE, 0, complain_overflow_dont, 0,"R_SPARC_REV32",FALSE, 0, 0xffffffff, FALSE),
252b5132
RH		 210};
211
212/* Convert standard reloc records to "arelent" format (incl byte swap). */
213
5ed6aba4
NC		 214reloc_howto_type howto_table_std[] =
215{
f7c33884 216 /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone. */
b34976b6
AM		 217HOWTO ( 0, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,0,"8", TRUE, 0x000000ff,0x000000ff, FALSE),
218HOWTO ( 1, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,0,"16", TRUE, 0x0000ffff,0x0000ffff, FALSE),
219HOWTO ( 2, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,0,"32", TRUE, 0xffffffff,0xffffffff, FALSE),
220HOWTO ( 3, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,0,"64", TRUE, 0xdeaddead,0xdeaddead, FALSE),
221HOWTO ( 4, 0, 0, 8, TRUE, 0, complain_overflow_signed, 0,"DISP8", TRUE, 0x000000ff,0x000000ff, FALSE),
222HOWTO ( 5, 0, 1, 16, TRUE, 0, complain_overflow_signed, 0,"DISP16", TRUE, 0x0000ffff,0x0000ffff, FALSE),
223HOWTO ( 6, 0, 2, 32, TRUE, 0, complain_overflow_signed, 0,"DISP32", TRUE, 0xffffffff,0xffffffff, FALSE),
224HOWTO ( 7, 0, 4, 64, TRUE, 0, complain_overflow_signed, 0,"DISP64", TRUE, 0xfeedface,0xfeedface, FALSE),
225HOWTO ( 8, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"GOT_REL", FALSE, 0,0x00000000, FALSE),
226HOWTO ( 9, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,0,"BASE16", FALSE,0xffffffff,0xffffffff, FALSE),
227HOWTO (10, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,0,"BASE32", FALSE,0xffffffff,0xffffffff, FALSE),
5f771d47
ILT		 228EMPTY_HOWTO (-1),
229EMPTY_HOWTO (-1),
230EMPTY_HOWTO (-1),
231EMPTY_HOWTO (-1),
232EMPTY_HOWTO (-1),
b34976b6 233 HOWTO (16, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"JMP_TABLE", FALSE, 0,0x00000000, FALSE),
5f771d47
ILT		 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),
247EMPTY_HOWTO (-1),
248EMPTY_HOWTO (-1),
b34976b6 249 HOWTO (32, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"RELATIVE", FALSE, 0,0x00000000, FALSE),
5f771d47
ILT		 250EMPTY_HOWTO (-1),
251EMPTY_HOWTO (-1),
252EMPTY_HOWTO (-1),
253EMPTY_HOWTO (-1),
254EMPTY_HOWTO (-1),
255EMPTY_HOWTO (-1),
256EMPTY_HOWTO (-1),
b34976b6 257 HOWTO (40, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"BASEREL", FALSE, 0,0x00000000, FALSE),
252b5132
RH		 258};
259
923f08ff 260#define TABLE_SIZE(TABLE) (sizeof (TABLE) / sizeof (TABLE[0]))
252b5132
RH		 261
262reloc_howto_type *
116c20d2 263NAME (aout, reloc_type_lookup) (bfd *abfd, bfd_reloc_code_real_type code)
252b5132 264{
116c20d2
NC		 265#define EXT(i, j) case i: return & howto_table_ext [j]
266#define STD(i, j) case i: return & howto_table_std [j]
252b5132 267 int ext = obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE;
f7c33884 268
252b5132 269 if (code == BFD_RELOC_CTOR)
30d10e9e 270 switch (bfd_arch_bits_per_address (abfd))
252b5132
RH		 271 {
272 case 32:
273 code = BFD_RELOC_32;
274 break;
275 case 64:
276 code = BFD_RELOC_64;
277 break;
278 }
f7c33884 279
252b5132
RH		 280 if (ext)
281 switch (code)
282 {
1642229e
HPN		 283 EXT (BFD_RELOC_8, 0);
284 EXT (BFD_RELOC_16, 1);
252b5132
RH		 285 EXT (BFD_RELOC_32, 2);
286 EXT (BFD_RELOC_HI22, 8);
287 EXT (BFD_RELOC_LO10, 11);
288 EXT (BFD_RELOC_32_PCREL_S2, 6);
289 EXT (BFD_RELOC_SPARC_WDISP22, 7);
290 EXT (BFD_RELOC_SPARC13, 10);
291 EXT (BFD_RELOC_SPARC_GOT10, 14);
292 EXT (BFD_RELOC_SPARC_BASE13, 15);
293 EXT (BFD_RELOC_SPARC_GOT13, 15);
294 EXT (BFD_RELOC_SPARC_GOT22, 16);
295 EXT (BFD_RELOC_SPARC_PC10, 17);
296 EXT (BFD_RELOC_SPARC_PC22, 18);
297 EXT (BFD_RELOC_SPARC_WPLT30, 19);
298 EXT (BFD_RELOC_SPARC_REV32, 26);
116c20d2
NC		 299 default:
300 return NULL;
252b5132
RH		 301 }
302 else
f7c33884 303 /* std relocs. */
252b5132
RH		 304 switch (code)
305 {
2846975a 306 STD (BFD_RELOC_8, 0);
252b5132
RH		 307 STD (BFD_RELOC_16, 1);
308 STD (BFD_RELOC_32, 2);
309 STD (BFD_RELOC_8_PCREL, 4);
310 STD (BFD_RELOC_16_PCREL, 5);
311 STD (BFD_RELOC_32_PCREL, 6);
312 STD (BFD_RELOC_16_BASEREL, 9);
313 STD (BFD_RELOC_32_BASEREL, 10);
116c20d2
NC		 314 default:
315 return NULL;
252b5132
RH		 316 }
317}
318
157090f7
AM		 319reloc_howto_type *
320NAME (aout, reloc_name_lookup) (bfd *abfd, const char *r_name)
321{
322 unsigned int i, size;
323 reloc_howto_type *howto_table;
324
325 if (obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE)
326 {
327 howto_table = howto_table_ext;
328 size = sizeof (howto_table_ext) / sizeof (howto_table_ext[0]);
329 }
330 else
331 {
332 howto_table = howto_table_std;
333 size = sizeof (howto_table_std) / sizeof (howto_table_std[0]);
334 }
335
336 for (i = 0; i < size; i++)
337 if (howto_table[i].name != NULL
338 && strcasecmp (howto_table[i].name, r_name) == 0)
339 return &howto_table[i];
340
341 return NULL;
342}
343
252b5132
RH		 344/*
345SUBSECTION
346 Internal entry points
347
348DESCRIPTION
349 @file{aoutx.h} exports several routines for accessing the
350 contents of an a.out file, which are gathered and exported in
351 turn by various format specific files (eg sunos.c).
252b5132
RH		 352*/
353
354/*
355FUNCTION
356 aout_@var{size}_swap_exec_header_in
357
358SYNOPSIS
359 void aout_@var{size}_swap_exec_header_in,
360 (bfd *abfd,
116c20d2 361 struct external_exec *bytes,
252b5132
RH		 362 struct internal_exec *execp);
363
364DESCRIPTION
365 Swap the information in an executable header @var{raw_bytes} taken
366 from a raw byte stream memory image into the internal exec header
367 structure @var{execp}.
368*/
369
370#ifndef NAME_swap_exec_header_in
371void
116c20d2
NC		 372NAME (aout, swap_exec_header_in) (bfd *abfd,
373 struct external_exec *bytes,
374 struct internal_exec *execp)
252b5132 375{
252b5132
RH		 376 /* The internal_exec structure has some fields that are unused in this
377 configuration (IE for i960), so ensure that all such uninitialized
378 fields are zero'd out. There are places where two of these structs
0ef5a5bd 379 are memcmp'd, and thus the contents do matter. */
116c20d2 380 memset ((void *) execp, 0, sizeof (struct internal_exec));
252b5132 381 /* Now fill in fields in the execp, from the bytes in the raw data. */
dc810e39 382 execp->a_info = H_GET_32 (abfd, bytes->e_info);
252b5132
RH		 383 execp->a_text = GET_WORD (abfd, bytes->e_text);
384 execp->a_data = GET_WORD (abfd, bytes->e_data);
385 execp->a_bss = GET_WORD (abfd, bytes->e_bss);
386 execp->a_syms = GET_WORD (abfd, bytes->e_syms);
387 execp->a_entry = GET_WORD (abfd, bytes->e_entry);
388 execp->a_trsize = GET_WORD (abfd, bytes->e_trsize);
389 execp->a_drsize = GET_WORD (abfd, bytes->e_drsize);
390}
116c20d2 391#define NAME_swap_exec_header_in NAME (aout, swap_exec_header_in)
252b5132
RH		 392#endif
393
394/*
395FUNCTION
396 aout_@var{size}_swap_exec_header_out
397
398SYNOPSIS
399 void aout_@var{size}_swap_exec_header_out
400 (bfd *abfd,
401 struct internal_exec *execp,
402 struct external_exec *raw_bytes);
403
404DESCRIPTION
405 Swap the information in an internal exec header structure
406 @var{execp} into the buffer @var{raw_bytes} ready for writing to disk.
407*/
408void
116c20d2
NC		 409NAME (aout, swap_exec_header_out) (bfd *abfd,
410 struct internal_exec *execp,
411 struct external_exec *bytes)
252b5132 412{
0ef5a5bd 413 /* Now fill in fields in the raw data, from the fields in the exec struct. */
dc810e39 414 H_PUT_32 (abfd, execp->a_info , bytes->e_info);
252b5132
RH		 415 PUT_WORD (abfd, execp->a_text , bytes->e_text);
416 PUT_WORD (abfd, execp->a_data , bytes->e_data);
417 PUT_WORD (abfd, execp->a_bss , bytes->e_bss);
418 PUT_WORD (abfd, execp->a_syms , bytes->e_syms);
419 PUT_WORD (abfd, execp->a_entry , bytes->e_entry);
420 PUT_WORD (abfd, execp->a_trsize, bytes->e_trsize);
421 PUT_WORD (abfd, execp->a_drsize, bytes->e_drsize);
422}
423
424/* Make all the section for an a.out file. */
425
b34976b6 426bfd_boolean
116c20d2 427NAME (aout, make_sections) (bfd *abfd)
252b5132 428{
116c20d2 429 if (obj_textsec (abfd) == NULL && bfd_make_section (abfd, ".text") == NULL)
b34976b6 430 return FALSE;
116c20d2 431 if (obj_datasec (abfd) == NULL && bfd_make_section (abfd, ".data") == NULL)
b34976b6 432 return FALSE;
116c20d2 433 if (obj_bsssec (abfd) == NULL && bfd_make_section (abfd, ".bss") == NULL)
b34976b6
AM		 434 return FALSE;
435 return TRUE;
252b5132
RH		 436}
437
438/*
439FUNCTION
440 aout_@var{size}_some_aout_object_p
441
442SYNOPSIS
443 const bfd_target *aout_@var{size}_some_aout_object_p
444 (bfd *abfd,
116c20d2
NC		 445 struct internal_exec *execp,
446 const bfd_target *(*callback_to_real_object_p) (bfd *));
252b5132
RH		 447
448DESCRIPTION
449 Some a.out variant thinks that the file open in @var{abfd}
450 checking is an a.out file. Do some more checking, and set up
451 for access if it really is. Call back to the calling
452 environment's "finish up" function just before returning, to
453 handle any last-minute setup.
454*/
455
456const bfd_target *
116c20d2
NC		 457NAME (aout, some_aout_object_p) (bfd *abfd,
458 struct internal_exec *execp,
459 const bfd_target *(*callback_to_real_object_p) (bfd *))
252b5132
RH		 460{
461 struct aout_data_struct *rawptr, *oldrawptr;
462 const bfd_target *result;
116c20d2 463 bfd_size_type amt = sizeof (* rawptr);
252b5132 464
a50b1753 465 rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, amt);
252b5132 466 if (rawptr == NULL)
116c20d2 467 return NULL;
252b5132
RH		 468
469 oldrawptr = abfd->tdata.aout_data;
470 abfd->tdata.aout_data = rawptr;
471
472 /* Copy the contents of the old tdata struct.
473 In particular, we want the subformat, since for hpux it was set in
474 hp300hpux.c:swap_exec_header_in and will be used in
475 hp300hpux.c:callback. */
476 if (oldrawptr != NULL)
477 *abfd->tdata.aout_data = *oldrawptr;
478
479 abfd->tdata.aout_data->a.hdr = &rawptr->e;
f7c33884
NC		 480 /* Copy in the internal_exec struct. */
481 *(abfd->tdata.aout_data->a.hdr) = *execp;
252b5132
RH		 482 execp = abfd->tdata.aout_data->a.hdr;
483
f7c33884 484 /* Set the file flags. */
252b5132
RH		 485 abfd->flags = BFD_NO_FLAGS;
486 if (execp->a_drsize || execp->a_trsize)
487 abfd->flags |= HAS_RELOC;
f7c33884 488 /* Setting of EXEC_P has been deferred to the bottom of this function. */
252b5132
RH		 489 if (execp->a_syms)
490 abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS;
bbb1afc8 491 if (N_DYNAMIC (execp))
252b5132
RH		 492 abfd->flags |= DYNAMIC;
493
bbb1afc8 494 if (N_MAGIC (execp) == ZMAGIC)
252b5132
RH		 495 {
496 abfd->flags |= D_PAGED | WP_TEXT;
497 adata (abfd).magic = z_magic;
498 }
bbb1afc8 499 else if (N_MAGIC (execp) == QMAGIC)
252b5132
RH		 500 {
501 abfd->flags |= D_PAGED | WP_TEXT;
502 adata (abfd).magic = z_magic;
503 adata (abfd).subformat = q_magic_format;
504 }
bbb1afc8 505 else if (N_MAGIC (execp) == NMAGIC)
252b5132
RH		 506 {
507 abfd->flags |= WP_TEXT;
508 adata (abfd).magic = n_magic;
509 }
bbb1afc8
AM		 510 else if (N_MAGIC (execp) == OMAGIC
511 || N_MAGIC (execp) == BMAGIC)
252b5132
RH		 512 adata (abfd).magic = o_magic;
513 else
116c20d2
NC		 514 /* Should have been checked with N_BADMAG before this routine
515 was called. */
516 abort ();
252b5132
RH		 517
518 bfd_get_start_address (abfd) = execp->a_entry;
519
116c20d2 520 obj_aout_symbols (abfd) = NULL;
252b5132
RH		 521 bfd_get_symcount (abfd) = execp->a_syms / sizeof (struct external_nlist);
522
523 /* The default relocation entry size is that of traditional V7 Unix. */
524 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
525
0ef5a5bd 526 /* The default symbol entry size is that of traditional Unix. */
252b5132
RH		 527 obj_symbol_entry_size (abfd) = EXTERNAL_NLIST_SIZE;
528
529#ifdef USE_MMAP
530 bfd_init_window (&obj_aout_sym_window (abfd));
531 bfd_init_window (&obj_aout_string_window (abfd));
532#endif
533 obj_aout_external_syms (abfd) = NULL;
534 obj_aout_external_strings (abfd) = NULL;
535 obj_aout_sym_hashes (abfd) = NULL;
536
116c20d2 537 if (! NAME (aout, make_sections) (abfd))
487e54f2 538 goto error_ret;
252b5132 539
eea6121a
AM		 540 obj_datasec (abfd)->size = execp->a_data;
541 obj_bsssec (abfd)->size = execp->a_bss;
252b5132
RH		 542
543 obj_textsec (abfd)->flags =
544 (execp->a_trsize != 0
545 ? (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_RELOC)
546 : (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS));
547 obj_datasec (abfd)->flags =
548 (execp->a_drsize != 0
549 ? (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS | SEC_RELOC)
550 : (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS));
551 obj_bsssec (abfd)->flags = SEC_ALLOC;
552
553#ifdef THIS_IS_ONLY_DOCUMENTATION
554 /* The common code can't fill in these things because they depend
555 on either the start address of the text segment, the rounding
556 up of virtual addresses between segments, or the starting file
557 position of the text segment -- all of which varies among different
558 versions of a.out. */
559
560 /* Call back to the format-dependent code to fill in the rest of the
561 fields and do any further cleanup. Things that should be filled
562 in by the callback: */
563
564 struct exec *execp = exec_hdr (abfd);
565
bbb1afc8 566 obj_textsec (abfd)->size = N_TXTSIZE (execp);
f7c33884 567 /* Data and bss are already filled in since they're so standard. */
252b5132 568
f7c33884 569 /* The virtual memory addresses of the sections. */
bbb1afc8
AM		 570 obj_textsec (abfd)->vma = N_TXTADDR (execp);
571 obj_datasec (abfd)->vma = N_DATADDR (execp);
572 obj_bsssec (abfd)->vma = N_BSSADDR (execp);
252b5132 573
f7c33884 574 /* The file offsets of the sections. */
bbb1afc8
AM		 575 obj_textsec (abfd)->filepos = N_TXTOFF (execp);
576 obj_datasec (abfd)->filepos = N_DATOFF (execp);
252b5132 577
f7c33884 578 /* The file offsets of the relocation info. */
bbb1afc8
AM		 579 obj_textsec (abfd)->rel_filepos = N_TRELOFF (execp);
580 obj_datasec (abfd)->rel_filepos = N_DRELOFF (execp);
252b5132
RH		 581
582 /* The file offsets of the string table and symbol table. */
bbb1afc8
AM		 583 obj_str_filepos (abfd) = N_STROFF (execp);
584 obj_sym_filepos (abfd) = N_SYMOFF (execp);
252b5132
RH		 585
586 /* Determine the architecture and machine type of the object file. */
bbb1afc8 587 switch (N_MACHTYPE (exec_hdr (abfd)))
923f08ff
AM		 588 {
589 default:
590 abfd->obj_arch = bfd_arch_obscure;
591 break;
592 }
252b5132 593
923f08ff
AM		 594 adata (abfd)->page_size = TARGET_PAGE_SIZE;
595 adata (abfd)->segment_size = SEGMENT_SIZE;
596 adata (abfd)->exec_bytes_size = EXEC_BYTES_SIZE;
252b5132
RH		 597
598 return abfd->xvec;
599
600 /* The architecture is encoded in various ways in various a.out variants,
601 or is not encoded at all in some of them. The relocation size depends
602 on the architecture and the a.out variant. Finally, the return value
603 is the bfd_target vector in use. If an error occurs, return zero and
604 set bfd_error to the appropriate error code.
605
606 Formats such as b.out, which have additional fields in the a.out
607 header, should cope with them in this callback as well. */
608#endif /* DOCUMENTATION */
609
beb0d161 610 result = (*callback_to_real_object_p) (abfd);
252b5132
RH		 611
612 /* Now that the segment addresses have been worked out, take a better
613 guess at whether the file is executable. If the entry point
614 is within the text segment, assume it is. (This makes files
615 executable even if their entry point address is 0, as long as
616 their text starts at zero.).
617
618 This test had to be changed to deal with systems where the text segment
619 runs at a different location than the default. The problem is that the
620 entry address can appear to be outside the text segment, thus causing an
621 erroneous conclusion that the file isn't executable.
622
623 To fix this, we now accept any non-zero entry point as an indication of
624 executability. This will work most of the time, since only the linker
0ef5a5bd 625 sets the entry point, and that is likely to be non-zero for most systems. */
252b5132
RH		 626
627 if (execp->a_entry != 0
923f08ff
AM		 628 || (execp->a_entry >= obj_textsec (abfd)->vma
629 && execp->a_entry < (obj_textsec (abfd)->vma
4c1534c7
AM		 630 + obj_textsec (abfd)->size)
631 && execp->a_trsize == 0
632 && execp->a_drsize == 0))
252b5132
RH		 633 abfd->flags |= EXEC_P;
634#ifdef STAT_FOR_EXEC
635 else
636 {
637 struct stat stat_buf;
638
639 /* The original heuristic doesn't work in some important cases.
640 The a.out file has no information about the text start
641 address. For files (like kernels) linked to non-standard
642 addresses (ld -Ttext nnn) the entry point may not be between
643 the default text start (obj_textsec(abfd)->vma) and
644 (obj_textsec(abfd)->vma) + text size. This is not just a mach
645 issue. Many kernels are loaded at non standard addresses. */
646 if (abfd->iostream != NULL
647 && (abfd->flags & BFD_IN_MEMORY) == 0
923f08ff 648 && (fstat (fileno ((FILE *) (abfd->iostream)), &stat_buf) == 0)
252b5132
RH		 649 && ((stat_buf.st_mode & 0111) != 0))
650 abfd->flags |= EXEC_P;
651 }
652#endif /* STAT_FOR_EXEC */
653
654 if (result)
0e71e495 655 return result;
487e54f2
AM		 656
657 error_ret:
658 bfd_release (abfd, rawptr);
659 abfd->tdata.aout_data = oldrawptr;
660 return NULL;
252b5132
RH		 661}
662
663/*
664FUNCTION
665 aout_@var{size}_mkobject
666
667SYNOPSIS
b34976b6 668 bfd_boolean aout_@var{size}_mkobject, (bfd *abfd);
252b5132
RH		 669
670DESCRIPTION
671 Initialize BFD @var{abfd} for use with a.out files.
672*/
673
b34976b6 674bfd_boolean
116c20d2 675NAME (aout, mkobject) (bfd *abfd)
252b5132 676{
dc810e39 677 struct aout_data_struct *rawptr;
116c20d2 678 bfd_size_type amt = sizeof (* rawptr);
252b5132
RH		 679
680 bfd_set_error (bfd_error_system_call);
681
a50b1753 682 rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, amt);
252b5132 683 if (rawptr == NULL)
b34976b6 684 return FALSE;
252b5132
RH		 685
686 abfd->tdata.aout_data = rawptr;
687 exec_hdr (abfd) = &(rawptr->e);
688
116c20d2
NC		 689 obj_textsec (abfd) = NULL;
690 obj_datasec (abfd) = NULL;
691 obj_bsssec (abfd) = NULL;
252b5132 692
b34976b6 693 return TRUE;
252b5132
RH		 694}
695
252b5132
RH		 696/*
697FUNCTION
698 aout_@var{size}_machine_type
699
700SYNOPSIS
701 enum machine_type aout_@var{size}_machine_type
702 (enum bfd_architecture arch,
116c20d2
NC		 703 unsigned long machine,
704 bfd_boolean *unknown);
252b5132
RH		 705
706DESCRIPTION
707 Keep track of machine architecture and machine type for
708 a.out's. Return the <<machine_type>> for a particular
709 architecture and machine, or <<M_UNKNOWN>> if that exact architecture
710 and machine can't be represented in a.out format.
711
712 If the architecture is understood, machine type 0 (default)
713 is always understood.
714*/
715
716enum machine_type
116c20d2
NC		 717NAME (aout, machine_type) (enum bfd_architecture arch,
718 unsigned long machine,
719 bfd_boolean *unknown)
252b5132
RH		 720{
721 enum machine_type arch_flags;
722
723 arch_flags = M_UNKNOWN;
b34976b6 724 *unknown = TRUE;
252b5132 725
923f08ff
AM		 726 switch (arch)
727 {
728 case bfd_arch_sparc:
729 if (machine == 0
730 || machine == bfd_mach_sparc
731 || machine == bfd_mach_sparc_sparclite
732 || machine == bfd_mach_sparc_sparclite_le
74d26813
L		 733 || machine == bfd_mach_sparc_v8plus
734 || machine == bfd_mach_sparc_v8plusa
735 || machine == bfd_mach_sparc_v8plusb
736 || machine == bfd_mach_sparc_v9
737 || machine == bfd_mach_sparc_v9a
738 || machine == bfd_mach_sparc_v9b)
923f08ff
AM		 739 arch_flags = M_SPARC;
740 else if (machine == bfd_mach_sparc_sparclet)
741 arch_flags = M_SPARCLET;
742 break;
743
744 case bfd_arch_m68k:
745 switch (machine)
746 {
747 case 0: arch_flags = M_68010; break;
b34976b6 748 case bfd_mach_m68000: arch_flags = M_UNKNOWN; *unknown = FALSE; break;
923f08ff
AM		 749 case bfd_mach_m68010: arch_flags = M_68010; break;
750 case bfd_mach_m68020: arch_flags = M_68020; break;
751 default: arch_flags = M_UNKNOWN; break;
752 }
252b5132 753 break;
923f08ff
AM		 754
755 case bfd_arch_i386:
3b77b1d5
AM		 756 if (machine == 0
757 || machine == bfd_mach_i386_i386
758 || machine == bfd_mach_i386_i386_intel_syntax)
923f08ff 759 arch_flags = M_386;
252b5132 760 break;
923f08ff 761
923f08ff
AM		 762 case bfd_arch_arm:
763 if (machine == 0)
764 arch_flags = M_ARM;
252b5132 765 break;
252b5132 766
923f08ff
AM		 767 case bfd_arch_mips:
768 switch (machine)
769 {
770 case 0:
771 case bfd_mach_mips3000:
772 case bfd_mach_mips3900:
773 arch_flags = M_MIPS1;
774 break;
775 case bfd_mach_mips6000:
776 arch_flags = M_MIPS2;
777 break;
778 case bfd_mach_mips4000:
779 case bfd_mach_mips4010:
780 case bfd_mach_mips4100:
781 case bfd_mach_mips4300:
782 case bfd_mach_mips4400:
783 case bfd_mach_mips4600:
784 case bfd_mach_mips4650:
785 case bfd_mach_mips8000:
0d2e43ed 786 case bfd_mach_mips9000:
923f08ff
AM		 787 case bfd_mach_mips10000:
788 case bfd_mach_mips12000:
3aa3176b
TS		 789 case bfd_mach_mips14000:
790 case bfd_mach_mips16000:
923f08ff
AM		 791 case bfd_mach_mips16:
792 case bfd_mach_mipsisa32:
af7ee8bf 793 case bfd_mach_mipsisa32r2:
ae52f483
AB		 794 case bfd_mach_mipsisa32r3:
795 case bfd_mach_mipsisa32r5:
7361da2c 796 case bfd_mach_mipsisa32r6:
923f08ff
AM		 797 case bfd_mach_mips5:
798 case bfd_mach_mipsisa64:
5f74bc13 799 case bfd_mach_mipsisa64r2:
ae52f483
AB		 800 case bfd_mach_mipsisa64r3:
801 case bfd_mach_mipsisa64r5:
7361da2c 802 case bfd_mach_mipsisa64r6:
923f08ff 803 case bfd_mach_mips_sb1:
52b6b6b9 804 case bfd_mach_mips_xlr:
923f08ff
AM		 805 /* FIXME: These should be MIPS3, MIPS4, MIPS16, MIPS32, etc. */
806 arch_flags = M_MIPS2;
807 break;
808 default:
809 arch_flags = M_UNKNOWN;
810 break;
811 }
812 break;
813
814 case bfd_arch_ns32k:
815 switch (machine)
816 {
817 case 0: arch_flags = M_NS32532; break;
818 case 32032: arch_flags = M_NS32032; break;
819 case 32532: arch_flags = M_NS32532; break;
820 default: arch_flags = M_UNKNOWN; break;
821 }
822 break;
252b5132 823
923f08ff 824 case bfd_arch_vax:
b34976b6 825 *unknown = FALSE;
923f08ff 826 break;
06c15ad7 827
923f08ff
AM		 828 case bfd_arch_cris:
829 if (machine == 0 || machine == 255)
830 arch_flags = M_CRIS;
831 break;
832
727e493d
MK		 833 case bfd_arch_m88k:
834 *unknown = FALSE;
835 break;
836
923f08ff
AM		 837 default:
838 arch_flags = M_UNKNOWN;
839 }
252b5132
RH		 840
841 if (arch_flags != M_UNKNOWN)
b34976b6 842 *unknown = FALSE;
252b5132
RH		 843
844 return arch_flags;
845}
846
252b5132
RH		 847/*
848FUNCTION
849 aout_@var{size}_set_arch_mach
850
851SYNOPSIS
b34976b6 852 bfd_boolean aout_@var{size}_set_arch_mach,
252b5132
RH		 853 (bfd *,
854 enum bfd_architecture arch,
116c20d2 855 unsigned long machine);
252b5132
RH		 856
857DESCRIPTION
858 Set the architecture and the machine of the BFD @var{abfd} to the
859 values @var{arch} and @var{machine}. Verify that @var{abfd}'s format
860 can support the architecture required.
861*/
862
b34976b6 863bfd_boolean
116c20d2
NC		 864NAME (aout, set_arch_mach) (bfd *abfd,
865 enum bfd_architecture arch,
866 unsigned long machine)
252b5132
RH		 867{
868 if (! bfd_default_set_arch_mach (abfd, arch, machine))
b34976b6 869 return FALSE;
252b5132
RH		 870
871 if (arch != bfd_arch_unknown)
872 {
b34976b6 873 bfd_boolean unknown;
252b5132 874
116c20d2 875 NAME (aout, machine_type) (arch, machine, &unknown);
252b5132 876 if (unknown)
b34976b6 877 return FALSE;
252b5132
RH		 878 }
879
f7c33884 880 /* Determine the size of a relocation entry. */
923f08ff
AM		 881 switch (arch)
882 {
883 case bfd_arch_sparc:
923f08ff
AM		 884 case bfd_arch_mips:
885 obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE;
886 break;
887 default:
888 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
889 break;
890 }
252b5132 891
923f08ff 892 return (*aout_backend_info (abfd)->set_sizes) (abfd);
252b5132
RH		 893}
894
895static void
116c20d2 896adjust_o_magic (bfd *abfd, struct internal_exec *execp)
252b5132
RH		 897{
898 file_ptr pos = adata (abfd).exec_bytes_size;
899 bfd_vma vma = 0;
900 int pad = 0;
901
902 /* Text. */
923f08ff
AM		 903 obj_textsec (abfd)->filepos = pos;
904 if (!obj_textsec (abfd)->user_set_vma)
905 obj_textsec (abfd)->vma = vma;
252b5132 906 else
923f08ff 907 vma = obj_textsec (abfd)->vma;
252b5132 908
eea6121a
AM		 909 pos += obj_textsec (abfd)->size;
910 vma += obj_textsec (abfd)->size;
252b5132
RH		 911
912 /* Data. */
923f08ff 913 if (!obj_datasec (abfd)->user_set_vma)
252b5132 914 {
eea6121a 915 obj_textsec (abfd)->size += pad;
252b5132
RH		 916 pos += pad;
917 vma += pad;
923f08ff 918 obj_datasec (abfd)->vma = vma;
252b5132
RH		 919 }
920 else
923f08ff
AM		 921 vma = obj_datasec (abfd)->vma;
922 obj_datasec (abfd)->filepos = pos;
eea6121a
AM		 923 pos += obj_datasec (abfd)->size;
924 vma += obj_datasec (abfd)->size;
252b5132
RH		 925
926 /* BSS. */
923f08ff 927 if (!obj_bsssec (abfd)->user_set_vma)
252b5132 928 {
eea6121a 929 obj_datasec (abfd)->size += pad;
252b5132
RH		 930 pos += pad;
931 vma += pad;
923f08ff 932 obj_bsssec (abfd)->vma = vma;
252b5132
RH		 933 }
934 else
935 {
08da05b0 936 /* The VMA of the .bss section is set by the VMA of the
252b5132
RH		 937 .data section plus the size of the .data section. We may
938 need to add padding bytes to make this true. */
939 pad = obj_bsssec (abfd)->vma - vma;
940 if (pad > 0)
941 {
eea6121a 942 obj_datasec (abfd)->size += pad;
252b5132
RH		 943 pos += pad;
944 }
945 }
923f08ff 946 obj_bsssec (abfd)->filepos = pos;
252b5132
RH		 947
948 /* Fix up the exec header. */
eea6121a
AM		 949 execp->a_text = obj_textsec (abfd)->size;
950 execp->a_data = obj_datasec (abfd)->size;
951 execp->a_bss = obj_bsssec (abfd)->size;
bbb1afc8 952 N_SET_MAGIC (execp, OMAGIC);
252b5132
RH		 953}
954
955static void
116c20d2 956adjust_z_magic (bfd *abfd, struct internal_exec *execp)
252b5132
RH		 957{
958 bfd_size_type data_pad, text_pad;
959 file_ptr text_end;
dc810e39 960 const struct aout_backend_data *abdp;
116c20d2
NC		 961 /* TRUE if text includes exec header. */
962 bfd_boolean ztih;
0ef5a5bd 963
252b5132
RH		 964 abdp = aout_backend_info (abfd);
965
966 /* Text. */
967 ztih = (abdp != NULL
968 && (abdp->text_includes_header
969 || obj_aout_subformat (abfd) == q_magic_format));
923f08ff
AM		 970 obj_textsec (abfd)->filepos = (ztih
971 ? adata (abfd).exec_bytes_size
972 : adata (abfd).zmagic_disk_block_size);
973 if (! obj_textsec (abfd)->user_set_vma)
252b5132
RH		 974 {
975 /* ?? Do we really need to check for relocs here? */
923f08ff
AM		 976 obj_textsec (abfd)->vma = ((abfd->flags & HAS_RELOC)
977 ? 0
978 : (ztih
979 ? (abdp->default_text_vma
980 + adata (abfd).exec_bytes_size)
981 : abdp->default_text_vma));
252b5132
RH		 982 text_pad = 0;
983 }
984 else
985 {
986 /* The .text section is being loaded at an unusual address. We
987 may need to pad it such that the .data section starts at a page
988 boundary. */
989 if (ztih)
990 text_pad = ((obj_textsec (abfd)->filepos - obj_textsec (abfd)->vma)
991 & (adata (abfd).page_size - 1));
992 else
993 text_pad = ((- obj_textsec (abfd)->vma)
994 & (adata (abfd).page_size - 1));
995 }
996
997 /* Find start of data. */
998 if (ztih)
999 {
eea6121a 1000 text_end = obj_textsec (abfd)->filepos + obj_textsec (abfd)->size;
252b5132
RH		 1001 text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end;
1002 }
1003 else
1004 {
1005 /* Note that if page_size == zmagic_disk_block_size, then
1006 filepos == page_size, and this case is the same as the ztih
1007 case. */
eea6121a 1008 text_end = obj_textsec (abfd)->size;
252b5132
RH		 1009 text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end;
1010 text_end += obj_textsec (abfd)->filepos;
1011 }
eea6121a 1012 obj_textsec (abfd)->size += text_pad;
252b5132
RH		 1013 text_end += text_pad;
1014
1015 /* Data. */
923f08ff 1016 if (!obj_datasec (abfd)->user_set_vma)
252b5132
RH		 1017 {
1018 bfd_vma vma;
eea6121a 1019 vma = obj_textsec (abfd)->vma + obj_textsec (abfd)->size;
923f08ff 1020 obj_datasec (abfd)->vma = BFD_ALIGN (vma, adata (abfd).segment_size);
252b5132
RH		 1021 }
1022 if (abdp && abdp->zmagic_mapped_contiguous)
1023 {
dee0a8f4
NC		 1024 asection * text = obj_textsec (abfd);
1025 asection * data = obj_datasec (abfd);
1026
eea6121a 1027 text_pad = data->vma - (text->vma + text->size);
dee0a8f4
NC		 1028 /* Only pad the text section if the data
1029 section is going to be placed after it. */
1030 if (text_pad > 0)
eea6121a 1031 text->size += text_pad;
252b5132 1032 }
923f08ff 1033 obj_datasec (abfd)->filepos = (obj_textsec (abfd)->filepos
eea6121a 1034 + obj_textsec (abfd)->size);
0ef5a5bd 1035
252b5132 1036 /* Fix up exec header while we're at it. */
eea6121a 1037 execp->a_text = obj_textsec (abfd)->size;
252b5132 1038 if (ztih && (!abdp || (abdp && !abdp->exec_header_not_counted)))
923f08ff 1039 execp->a_text += adata (abfd).exec_bytes_size;
252b5132 1040 if (obj_aout_subformat (abfd) == q_magic_format)
bbb1afc8 1041 N_SET_MAGIC (execp, QMAGIC);
252b5132 1042 else
bbb1afc8 1043 N_SET_MAGIC (execp, ZMAGIC);
252b5132
RH		 1044
1045 /* Spec says data section should be rounded up to page boundary. */
eea6121a
AM		 1046 obj_datasec (abfd)->size
1047 = align_power (obj_datasec (abfd)->size,
923f08ff 1048 obj_bsssec (abfd)->alignment_power);
eea6121a 1049 execp->a_data = BFD_ALIGN (obj_datasec (abfd)->size,
923f08ff 1050 adata (abfd).page_size);
eea6121a 1051 data_pad = execp->a_data - obj_datasec (abfd)->size;
252b5132
RH		 1052
1053 /* BSS. */
923f08ff
AM		 1054 if (!obj_bsssec (abfd)->user_set_vma)
1055 obj_bsssec (abfd)->vma = (obj_datasec (abfd)->vma
eea6121a 1056 + obj_datasec (abfd)->size);
252b5132
RH		 1057 /* If the BSS immediately follows the data section and extra space
1058 in the page is left after the data section, fudge data
1059 in the header so that the bss section looks smaller by that
1060 amount. We'll start the bss section there, and lie to the OS.
1061 (Note that a linker script, as well as the above assignment,
1062 could have explicitly set the BSS vma to immediately follow
1063 the data section.) */
923f08ff 1064 if (align_power (obj_bsssec (abfd)->vma, obj_bsssec (abfd)->alignment_power)
eea6121a
AM		 1065 == obj_datasec (abfd)->vma + obj_datasec (abfd)->size)
1066 execp->a_bss = (data_pad > obj_bsssec (abfd)->size
1067 ? 0 : obj_bsssec (abfd)->size - data_pad);
252b5132 1068 else
eea6121a 1069 execp->a_bss = obj_bsssec (abfd)->size;
252b5132
RH		 1070}
1071
1072static void
116c20d2 1073adjust_n_magic (bfd *abfd, struct internal_exec *execp)
252b5132 1074{
923f08ff 1075 file_ptr pos = adata (abfd).exec_bytes_size;
252b5132
RH		 1076 bfd_vma vma = 0;
1077 int pad;
0ef5a5bd 1078
252b5132 1079 /* Text. */
923f08ff
AM		 1080 obj_textsec (abfd)->filepos = pos;
1081 if (!obj_textsec (abfd)->user_set_vma)
1082 obj_textsec (abfd)->vma = vma;
252b5132 1083 else
923f08ff 1084 vma = obj_textsec (abfd)->vma;
eea6121a
AM		 1085 pos += obj_textsec (abfd)->size;
1086 vma += obj_textsec (abfd)->size;
252b5132
RH		 1087
1088 /* Data. */
923f08ff
AM		 1089 obj_datasec (abfd)->filepos = pos;
1090 if (!obj_datasec (abfd)->user_set_vma)
1091 obj_datasec (abfd)->vma = BFD_ALIGN (vma, adata (abfd).segment_size);
1092 vma = obj_datasec (abfd)->vma;
0ef5a5bd 1093
252b5132 1094 /* Since BSS follows data immediately, see if it needs alignment. */
eea6121a 1095 vma += obj_datasec (abfd)->size;
923f08ff 1096 pad = align_power (vma, obj_bsssec (abfd)->alignment_power) - vma;
eea6121a
AM		 1097 obj_datasec (abfd)->size += pad;
1098 pos += obj_datasec (abfd)->size;
252b5132
RH		 1099
1100 /* BSS. */
923f08ff
AM		 1101 if (!obj_bsssec (abfd)->user_set_vma)
1102 obj_bsssec (abfd)->vma = vma;
252b5132 1103 else
923f08ff 1104 vma = obj_bsssec (abfd)->vma;
252b5132
RH		 1105
1106 /* Fix up exec header. */
eea6121a
AM		 1107 execp->a_text = obj_textsec (abfd)->size;
1108 execp->a_data = obj_datasec (abfd)->size;
1109 execp->a_bss = obj_bsssec (abfd)->size;
bbb1afc8 1110 N_SET_MAGIC (execp, NMAGIC);
252b5132
RH		 1111}
1112
b34976b6 1113bfd_boolean
3a8c4a5b 1114NAME (aout, adjust_sizes_and_vmas) (bfd *abfd)
252b5132
RH		 1115{
1116 struct internal_exec *execp = exec_hdr (abfd);
1117
116c20d2 1118 if (! NAME (aout, make_sections) (abfd))
b34976b6 1119 return FALSE;
252b5132 1120
923f08ff 1121 if (adata (abfd).magic != undecided_magic)
b34976b6 1122 return TRUE;
252b5132 1123
eea6121a
AM		 1124 obj_textsec (abfd)->size =
1125 align_power (obj_textsec (abfd)->size,
923f08ff 1126 obj_textsec (abfd)->alignment_power);
252b5132 1127
252b5132
RH		 1128 /* Rule (heuristic) for when to pad to a new page. Note that there
1129 are (at least) two ways demand-paged (ZMAGIC) files have been
1130 handled. Most Berkeley-based systems start the text segment at
1131 (TARGET_PAGE_SIZE). However, newer versions of SUNOS start the text
1132 segment right after the exec header; the latter is counted in the
1133 text segment size, and is paged in by the kernel with the rest of
0ef5a5bd 1134 the text. */
252b5132
RH		 1135
1136 /* This perhaps isn't the right way to do this, but made it simpler for me
1137 to understand enough to implement it. Better would probably be to go
1138 right from BFD flags to alignment/positioning characteristics. But the
1139 old code was sloppy enough about handling the flags, and had enough
1140 other magic, that it was a little hard for me to understand. I think
1141 I understand it better now, but I haven't time to do the cleanup this
1142 minute. */
1143
1144 if (abfd->flags & D_PAGED)
1145 /* Whether or not WP_TEXT is set -- let D_PAGED override. */
923f08ff 1146 adata (abfd).magic = z_magic;
252b5132 1147 else if (abfd->flags & WP_TEXT)
923f08ff 1148 adata (abfd).magic = n_magic;
252b5132 1149 else
923f08ff 1150 adata (abfd).magic = o_magic;
252b5132
RH		 1151
1152#ifdef BFD_AOUT_DEBUG /* requires gcc2 */
1153#if __GNUC__ >= 2
1154 fprintf (stderr, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n",
1155 ({ char *str;
923f08ff
AM		 1156 switch (adata (abfd).magic)
1157 {
1158 case n_magic: str = "NMAGIC"; break;
1159 case o_magic: str = "OMAGIC"; break;
1160 case z_magic: str = "ZMAGIC"; break;
1161 default: abort ();
1162 }
252b5132
RH		 1163 str;
1164 }),
eea6121a 1165 obj_textsec (abfd)->vma, obj_textsec (abfd)->size,
923f08ff 1166 obj_textsec (abfd)->alignment_power,
eea6121a 1167 obj_datasec (abfd)->vma, obj_datasec (abfd)->size,
923f08ff 1168 obj_datasec (abfd)->alignment_power,
eea6121a 1169 obj_bsssec (abfd)->vma, obj_bsssec (abfd)->size,
923f08ff 1170 obj_bsssec (abfd)->alignment_power);
252b5132
RH		 1171#endif
1172#endif
1173
923f08ff 1174 switch (adata (abfd).magic)
252b5132
RH		 1175 {
1176 case o_magic:
1177 adjust_o_magic (abfd, execp);
1178 break;
1179 case z_magic:
1180 adjust_z_magic (abfd, execp);
1181 break;
1182 case n_magic:
1183 adjust_n_magic (abfd, execp);
1184 break;
1185 default:
1186 abort ();
1187 }
1188
1189#ifdef BFD_AOUT_DEBUG
1190 fprintf (stderr, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n",
eea6121a 1191 obj_textsec (abfd)->vma, obj_textsec (abfd)->size,
923f08ff 1192 obj_textsec (abfd)->filepos,
eea6121a 1193 obj_datasec (abfd)->vma, obj_datasec (abfd)->size,
923f08ff 1194 obj_datasec (abfd)->filepos,
eea6121a 1195 obj_bsssec (abfd)->vma, obj_bsssec (abfd)->size);
252b5132
RH		 1196#endif
1197
b34976b6 1198 return TRUE;
252b5132
RH		 1199}
1200
1201/*
1202FUNCTION
1203 aout_@var{size}_new_section_hook
1204
1205SYNOPSIS
b34976b6 1206 bfd_boolean aout_@var{size}_new_section_hook,
252b5132 1207 (bfd *abfd,
116c20d2 1208 asection *newsect);
252b5132
RH		 1209
1210DESCRIPTION
1211 Called by the BFD in response to a @code{bfd_make_section}
1212 request.
1213*/
b34976b6 1214bfd_boolean
116c20d2 1215NAME (aout, new_section_hook) (bfd *abfd, asection *newsect)
252b5132 1216{
f7c33884 1217 /* Align to double at least. */
923f08ff 1218 newsect->alignment_power = bfd_get_arch_info (abfd)->section_align_power;
252b5132 1219
252b5132 1220 if (bfd_get_format (abfd) == bfd_object)
f7c33884
NC		 1221 {
1222 if (obj_textsec (abfd) == NULL && !strcmp (newsect->name, ".text"))
1223 {
1224 obj_textsec (abfd)= newsect;
1225 newsect->target_index = N_TEXT;
f7c33884 1226 }
f592407e 1227 else if (obj_datasec (abfd) == NULL && !strcmp (newsect->name, ".data"))
f7c33884
NC		 1228 {
1229 obj_datasec (abfd) = newsect;
1230 newsect->target_index = N_DATA;
f7c33884 1231 }
f592407e 1232 else if (obj_bsssec (abfd) == NULL && !strcmp (newsect->name, ".bss"))
f7c33884
NC		 1233 {
1234 obj_bsssec (abfd) = newsect;
1235 newsect->target_index = N_BSS;
f7c33884
NC		 1236 }
1237 }
252b5132 1238
f7c33884 1239 /* We allow more than three sections internally. */
f592407e 1240 return _bfd_generic_new_section_hook (abfd, newsect);
252b5132
RH		 1241}
1242
b34976b6 1243bfd_boolean
116c20d2
NC		 1244NAME (aout, set_section_contents) (bfd *abfd,
1245 sec_ptr section,
1246 const void * location,
1247 file_ptr offset,
1248 bfd_size_type count)
252b5132 1249{
252b5132
RH		 1250 if (! abfd->output_has_begun)
1251 {
3a8c4a5b 1252 if (! NAME (aout, adjust_sizes_and_vmas) (abfd))
b34976b6 1253 return FALSE;
252b5132
RH		 1254 }
1255
1256 if (section == obj_bsssec (abfd))
1257 {
1258 bfd_set_error (bfd_error_no_contents);
b34976b6 1259 return FALSE;
252b5132
RH		 1260 }
1261
1262 if (section != obj_textsec (abfd)
1263 && section != obj_datasec (abfd))
1264 {
e6af3a53
NC		 1265 if (aout_section_merge_with_text_p (abfd, section))
1266 section->filepos = obj_textsec (abfd)->filepos +
1267 (section->vma - obj_textsec (abfd)->vma);
1268 else
1269 {
1270 (*_bfd_error_handler)
1271 (_("%s: can not represent section `%s' in a.out object file format"),
1272 bfd_get_filename (abfd), bfd_get_section_name (abfd, section));
1273 bfd_set_error (bfd_error_nonrepresentable_section);
1274 return FALSE;
1275 }
252b5132
RH		 1276 }
1277
1278 if (count != 0)
1279 {
1280 if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0
dc810e39 1281 || bfd_bwrite (location, count, abfd) != count)
b34976b6 1282 return FALSE;
252b5132
RH		 1283 }
1284
b34976b6 1285 return TRUE;
252b5132
RH		 1286}
1287\f
1288/* Read the external symbols from an a.out file. */
1289
b34976b6 1290static bfd_boolean
116c20d2 1291aout_get_external_symbols (bfd *abfd)
252b5132 1292{
116c20d2 1293 if (obj_aout_external_syms (abfd) == NULL)
252b5132
RH		 1294 {
1295 bfd_size_type count;
1296 struct external_nlist *syms;
7c53fd1c 1297 bfd_size_type amt = exec_hdr (abfd)->a_syms;
252b5132 1298
7c53fd1c 1299 count = amt / EXTERNAL_NLIST_SIZE;
6b8f0fd5
MS		 1300 if (count == 0)
1301 return TRUE; /* Nothing to do. */
252b5132
RH		 1302
1303#ifdef USE_MMAP
7c53fd1c 1304 if (! bfd_get_file_window (abfd, obj_sym_filepos (abfd), amt,
b34976b6
AM		 1305 &obj_aout_sym_window (abfd), TRUE))
1306 return FALSE;
252b5132
RH		 1307 syms = (struct external_nlist *) obj_aout_sym_window (abfd).data;
1308#else
1309 /* We allocate using malloc to make the values easy to free
1310 later on. If we put them on the objalloc it might not be
1311 possible to free them. */
7c53fd1c 1312 syms = (struct external_nlist *) bfd_malloc (amt);
6b8f0fd5 1313 if (syms == NULL)
b34976b6 1314 return FALSE;
252b5132 1315
7c53fd1c
AM		 1316 if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
1317 || bfd_bread (syms, amt, abfd) != amt)
1318 {
1319 free (syms);
1320 return FALSE;
1321 }
252b5132
RH		 1322#endif
1323
1324 obj_aout_external_syms (abfd) = syms;
1325 obj_aout_external_sym_count (abfd) = count;
1326 }
0ef5a5bd 1327
252b5132
RH		 1328 if (obj_aout_external_strings (abfd) == NULL
1329 && exec_hdr (abfd)->a_syms != 0)
1330 {
1331 unsigned char string_chars[BYTES_IN_WORD];
1332 bfd_size_type stringsize;
1333 char *strings;
dc810e39 1334 bfd_size_type amt = BYTES_IN_WORD;
252b5132
RH		 1335
1336 /* Get the size of the strings. */
1337 if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0
116c20d2 1338 || bfd_bread ((void *) string_chars, amt, abfd) != amt)
b34976b6 1339 return FALSE;
252b5132
RH		 1340 stringsize = GET_WORD (abfd, string_chars);
1341
1342#ifdef USE_MMAP
82e51918 1343 if (! bfd_get_file_window (abfd, obj_str_filepos (abfd), stringsize,
b34976b6
AM		 1344 &obj_aout_string_window (abfd), TRUE))
1345 return FALSE;
252b5132
RH		 1346 strings = (char *) obj_aout_string_window (abfd).data;
1347#else
a50b1753 1348 strings = (char *) bfd_malloc (stringsize + 1);
252b5132 1349 if (strings == NULL)
b34976b6 1350 return FALSE;
252b5132
RH		 1351
1352 /* Skip space for the string count in the buffer for convenience
1353 when using indexes. */
dc810e39
AM		 1354 amt = stringsize - BYTES_IN_WORD;
1355 if (bfd_bread (strings + BYTES_IN_WORD, amt, abfd) != amt)
252b5132
RH		 1356 {
1357 free (strings);
b34976b6 1358 return FALSE;
252b5132
RH		 1359 }
1360#endif
1361
1362 /* Ensure that a zero index yields an empty string. */
1363 strings[0] = '\0';
1364
1365 strings[stringsize - 1] = 0;
1366
1367 obj_aout_external_strings (abfd) = strings;
1368 obj_aout_external_string_size (abfd) = stringsize;
1369 }
1370
b34976b6 1371 return TRUE;
252b5132
RH		 1372}
1373
1374/* Translate an a.out symbol into a BFD symbol. The desc, other, type
1375 and symbol->value fields of CACHE_PTR will be set from the a.out
1376 nlist structure. This function is responsible for setting
1377 symbol->flags and symbol->section, and adjusting symbol->value. */
1378
b34976b6 1379static bfd_boolean
116c20d2 1380translate_from_native_sym_flags (bfd *abfd, aout_symbol_type *cache_ptr)
252b5132
RH		 1381{
1382 flagword visible;
1383
1384 if ((cache_ptr->type & N_STAB) != 0
1385 || cache_ptr->type == N_FN)
1386 {
1387 asection *sec;
1388
1389 /* This is a debugging symbol. */
252b5132
RH		 1390 cache_ptr->symbol.flags = BSF_DEBUGGING;
1391
1392 /* Work out the symbol section. */
1393 switch (cache_ptr->type & N_TYPE)
1394 {
1395 case N_TEXT:
1396 case N_FN:
1397 sec = obj_textsec (abfd);
1398 break;
1399 case N_DATA:
1400 sec = obj_datasec (abfd);
1401 break;
1402 case N_BSS:
1403 sec = obj_bsssec (abfd);
1404 break;
1405 default:
1406 case N_ABS:
1407 sec = bfd_abs_section_ptr;
1408 break;
1409 }
1410
1411 cache_ptr->symbol.section = sec;
1412 cache_ptr->symbol.value -= sec->vma;
1413
b34976b6 1414 return TRUE;
252b5132
RH		 1415 }
1416
1417 /* Get the default visibility. This does not apply to all types, so
1418 we just hold it in a local variable to use if wanted. */
1419 if ((cache_ptr->type & N_EXT) == 0)
1420 visible = BSF_LOCAL;
1421 else
1422 visible = BSF_GLOBAL;
1423
1424 switch (cache_ptr->type)
1425 {
1426 default:
1427 case N_ABS: case N_ABS | N_EXT:
1428 cache_ptr->symbol.section = bfd_abs_section_ptr;
1429 cache_ptr->symbol.flags = visible;
1430 break;
1431
1432 case N_UNDF | N_EXT:
1433 if (cache_ptr->symbol.value != 0)
1434 {
1435 /* This is a common symbol. */
1436 cache_ptr->symbol.flags = BSF_GLOBAL;
1437 cache_ptr->symbol.section = bfd_com_section_ptr;
1438 }
1439 else
1440 {
1441 cache_ptr->symbol.flags = 0;
1442 cache_ptr->symbol.section = bfd_und_section_ptr;
1443 }
1444 break;
1445
1446 case N_TEXT: case N_TEXT | N_EXT:
1447 cache_ptr->symbol.section = obj_textsec (abfd);
1448 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1449 cache_ptr->symbol.flags = visible;
1450 break;
1451
1452 /* N_SETV symbols used to represent set vectors placed in the
1453 data section. They are no longer generated. Theoretically,
1454 it was possible to extract the entries and combine them with
1455 new ones, although I don't know if that was ever actually
1456 done. Unless that feature is restored, treat them as data
1457 symbols. */
1458 case N_SETV: case N_SETV | N_EXT:
1459 case N_DATA: case N_DATA | N_EXT:
1460 cache_ptr->symbol.section = obj_datasec (abfd);
1461 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1462 cache_ptr->symbol.flags = visible;
1463 break;
1464
1465 case N_BSS: case N_BSS | N_EXT:
1466 cache_ptr->symbol.section = obj_bsssec (abfd);
1467 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1468 cache_ptr->symbol.flags = visible;
1469 break;
1470
1471 case N_SETA: case N_SETA | N_EXT:
1472 case N_SETT: case N_SETT | N_EXT:
1473 case N_SETD: case N_SETD | N_EXT:
1474 case N_SETB: case N_SETB | N_EXT:
1475 {
1476 /* This code is no longer needed. It used to be used to make
1477 the linker handle set symbols, but they are now handled in
1478 the add_symbols routine instead. */
252b5132
RH		 1479 switch (cache_ptr->type & N_TYPE)
1480 {
1481 case N_SETA:
1482 cache_ptr->symbol.section = bfd_abs_section_ptr;
1483 break;
1484 case N_SETT:
1485 cache_ptr->symbol.section = obj_textsec (abfd);
1486 break;
1487 case N_SETD:
1488 cache_ptr->symbol.section = obj_datasec (abfd);
1489 break;
1490 case N_SETB:
1491 cache_ptr->symbol.section = obj_bsssec (abfd);
1492 break;
1493 }
1494
1495 cache_ptr->symbol.flags |= BSF_CONSTRUCTOR;
1496 }
1497 break;
1498
1499 case N_WARNING:
1500 /* This symbol is the text of a warning message. The next
1501 symbol is the symbol to associate the warning with. If a
1502 reference is made to that symbol, a warning is issued. */
1503 cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_WARNING;
1504 cache_ptr->symbol.section = bfd_abs_section_ptr;
1505 break;
1506
1507 case N_INDR: case N_INDR | N_EXT:
1508 /* An indirect symbol. This consists of two symbols in a row.
1509 The first symbol is the name of the indirection. The second
1510 symbol is the name of the target. A reference to the first
1511 symbol becomes a reference to the second. */
1512 cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_INDIRECT | visible;
1513 cache_ptr->symbol.section = bfd_ind_section_ptr;
1514 break;
1515
1516 case N_WEAKU:
1517 cache_ptr->symbol.section = bfd_und_section_ptr;
1518 cache_ptr->symbol.flags = BSF_WEAK;
1519 break;
1520
1521 case N_WEAKA:
1522 cache_ptr->symbol.section = bfd_abs_section_ptr;
1523 cache_ptr->symbol.flags = BSF_WEAK;
1524 break;
1525
1526 case N_WEAKT:
1527 cache_ptr->symbol.section = obj_textsec (abfd);
1528 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1529 cache_ptr->symbol.flags = BSF_WEAK;
1530 break;
1531
1532 case N_WEAKD:
1533 cache_ptr->symbol.section = obj_datasec (abfd);
1534 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1535 cache_ptr->symbol.flags = BSF_WEAK;
1536 break;
1537
1538 case N_WEAKB:
1539 cache_ptr->symbol.section = obj_bsssec (abfd);
1540 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1541 cache_ptr->symbol.flags = BSF_WEAK;
1542 break;
1543 }
1544
b34976b6 1545 return TRUE;
252b5132
RH		 1546}
1547
1548/* Set the fields of SYM_POINTER according to CACHE_PTR. */
1549
b34976b6 1550static bfd_boolean
116c20d2
NC		 1551translate_to_native_sym_flags (bfd *abfd,
1552 asymbol *cache_ptr,
1553 struct external_nlist *sym_pointer)
252b5132
RH		 1554{
1555 bfd_vma value = cache_ptr->value;
1556 asection *sec;
1557 bfd_vma off;
1558
1559 /* Mask out any existing type bits in case copying from one section
1560 to another. */
1561 sym_pointer->e_type[0] &= ~N_TYPE;
1562
1563 sec = bfd_get_section (cache_ptr);
1564 off = 0;
1565
1566 if (sec == NULL)
1567 {
1568 /* This case occurs, e.g., for the *DEBUG* section of a COFF
1569 file. */
1570 (*_bfd_error_handler)
1571 (_("%s: can not represent section for symbol `%s' in a.out object file format"),
0ef5a5bd 1572 bfd_get_filename (abfd),
252b5132
RH		 1573 cache_ptr->name != NULL ? cache_ptr->name : _("*unknown*"));
1574 bfd_set_error (bfd_error_nonrepresentable_section);
b34976b6 1575 return FALSE;
252b5132
RH		 1576 }
1577
1578 if (sec->output_section != NULL)
1579 {
1580 off = sec->output_offset;
1581 sec = sec->output_section;
1582 }
1583
1584 if (bfd_is_abs_section (sec))
1585 sym_pointer->e_type[0] |= N_ABS;
1586 else if (sec == obj_textsec (abfd))
1587 sym_pointer->e_type[0] |= N_TEXT;
1588 else if (sec == obj_datasec (abfd))
1589 sym_pointer->e_type[0] |= N_DATA;
1590 else if (sec == obj_bsssec (abfd))
1591 sym_pointer->e_type[0] |= N_BSS;
1592 else if (bfd_is_und_section (sec))
1593 sym_pointer->e_type[0] = N_UNDF | N_EXT;
1594 else if (bfd_is_ind_section (sec))
1595 sym_pointer->e_type[0] = N_INDR;
1596 else if (bfd_is_com_section (sec))
1597 sym_pointer->e_type[0] = N_UNDF | N_EXT;
1598 else
1599 {
e6af3a53
NC		 1600 if (aout_section_merge_with_text_p (abfd, sec))
1601 sym_pointer->e_type[0] |= N_TEXT;
1602 else
1603 {
1604 (*_bfd_error_handler)
1605 (_("%s: can not represent section `%s' in a.out object file format"),
1606 bfd_get_filename (abfd), bfd_get_section_name (abfd, sec));
1607 bfd_set_error (bfd_error_nonrepresentable_section);
1608 return FALSE;
1609 }
252b5132
RH		 1610 }
1611
f7c33884 1612 /* Turn the symbol from section relative to absolute again. */
252b5132
RH		 1613 value += sec->vma + off;
1614
1615 if ((cache_ptr->flags & BSF_WARNING) != 0)
1616 sym_pointer->e_type[0] = N_WARNING;
1617
1618 if ((cache_ptr->flags & BSF_DEBUGGING) != 0)
1619 sym_pointer->e_type[0] = ((aout_symbol_type *) cache_ptr)->type;
1620 else if ((cache_ptr->flags & BSF_GLOBAL) != 0)
1621 sym_pointer->e_type[0] |= N_EXT;
930d924d
L		 1622 else if ((cache_ptr->flags & BSF_LOCAL) != 0)
1623 sym_pointer->e_type[0] &= ~N_EXT;
252b5132
RH		 1624
1625 if ((cache_ptr->flags & BSF_CONSTRUCTOR) != 0)
1626 {
1627 int type = ((aout_symbol_type *) cache_ptr)->type;
f7c33884 1628
252b5132
RH		 1629 switch (type)
1630 {
1631 case N_ABS: type = N_SETA; break;
1632 case N_TEXT: type = N_SETT; break;
1633 case N_DATA: type = N_SETD; break;
1634 case N_BSS: type = N_SETB; break;
1635 }
1636 sym_pointer->e_type[0] = type;
1637 }
1638
1639 if ((cache_ptr->flags & BSF_WEAK) != 0)
1640 {
1641 int type;
1642
1643 switch (sym_pointer->e_type[0] & N_TYPE)
1644 {
1645 default:
1646 case N_ABS: type = N_WEAKA; break;
1647 case N_TEXT: type = N_WEAKT; break;
1648 case N_DATA: type = N_WEAKD; break;
1649 case N_BSS: type = N_WEAKB; break;
1650 case N_UNDF: type = N_WEAKU; break;
1651 }
1652 sym_pointer->e_type[0] = type;
1653 }
1654
923f08ff 1655 PUT_WORD (abfd, value, sym_pointer->e_value);
252b5132 1656
b34976b6 1657 return TRUE;
252b5132
RH		 1658}
1659\f
0ef5a5bd 1660/* Native-level interface to symbols. */
252b5132
RH		 1661
1662asymbol *
116c20d2 1663NAME (aout, make_empty_symbol) (bfd *abfd)
252b5132 1664{
dc810e39 1665 bfd_size_type amt = sizeof (aout_symbol_type);
116c20d2 1666
d3ce72d0
NC		 1667 aout_symbol_type *new_symbol = (aout_symbol_type *) bfd_zalloc (abfd, amt);
1668 if (!new_symbol)
252b5132 1669 return NULL;
d3ce72d0 1670 new_symbol->symbol.the_bfd = abfd;
252b5132 1671
d3ce72d0 1672 return &new_symbol->symbol;
252b5132
RH		 1673}
1674
1675/* Translate a set of internal symbols into external symbols. */
1676
b34976b6 1677bfd_boolean
116c20d2
NC		 1678NAME (aout, translate_symbol_table) (bfd *abfd,
1679 aout_symbol_type *in,
1680 struct external_nlist *ext,
1681 bfd_size_type count,
1682 char *str,
1683 bfd_size_type strsize,
1684 bfd_boolean dynamic)
252b5132
RH		 1685{
1686 struct external_nlist *ext_end;
1687
1688 ext_end = ext + count;
1689 for (; ext < ext_end; ext++, in++)
1690 {
1691 bfd_vma x;
1692
1693 x = GET_WORD (abfd, ext->e_strx);
1694 in->symbol.the_bfd = abfd;
1695
1696 /* For the normal symbols, the zero index points at the number
1697 of bytes in the string table but is to be interpreted as the
1698 null string. For the dynamic symbols, the number of bytes in
1699 the string table is stored in the __DYNAMIC structure and the
1700 zero index points at an actual string. */
1701 if (x == 0 && ! dynamic)
1702 in->symbol.name = "";
1703 else if (x < strsize)
1704 in->symbol.name = str + x;
1705 else
b34976b6 1706 return FALSE;
252b5132
RH		 1707
1708 in->symbol.value = GET_SWORD (abfd, ext->e_value);
dc810e39
AM		 1709 in->desc = H_GET_16 (abfd, ext->e_desc);
1710 in->other = H_GET_8 (abfd, ext->e_other);
1711 in->type = H_GET_8 (abfd, ext->e_type);
252b5132
RH		 1712 in->symbol.udata.p = NULL;
1713
1714 if (! translate_from_native_sym_flags (abfd, in))
b34976b6 1715 return FALSE;
252b5132
RH		 1716
1717 if (dynamic)
1718 in->symbol.flags |= BSF_DYNAMIC;
1719 }
1720
b34976b6 1721 return TRUE;
252b5132
RH		 1722}
1723
1724/* We read the symbols into a buffer, which is discarded when this
1725 function exits. We read the strings into a buffer large enough to
0ef5a5bd 1726 hold them all plus all the cached symbol entries. */
252b5132 1727
b34976b6 1728bfd_boolean
116c20d2 1729NAME (aout, slurp_symbol_table) (bfd *abfd)
252b5132
RH		 1730{
1731 struct external_nlist *old_external_syms;
1732 aout_symbol_type *cached;
dc810e39 1733 bfd_size_type cached_size;
252b5132 1734
f7c33884 1735 /* If there's no work to be done, don't do any. */
116c20d2 1736 if (obj_aout_symbols (abfd) != NULL)
b34976b6 1737 return TRUE;
252b5132
RH		 1738
1739 old_external_syms = obj_aout_external_syms (abfd);
1740
1741 if (! aout_get_external_symbols (abfd))
b34976b6 1742 return FALSE;
252b5132 1743
dc810e39 1744 cached_size = obj_aout_external_sym_count (abfd);
87b32780
MS		 1745 if (cached_size == 0)
1746 return TRUE; /* Nothing to do. */
1747
dc810e39 1748 cached_size *= sizeof (aout_symbol_type);
a50b1753 1749 cached = (aout_symbol_type *) bfd_zmalloc (cached_size);
87b32780 1750 if (cached == NULL)
b34976b6 1751 return FALSE;
252b5132
RH		 1752
1753 /* Convert from external symbol information to internal. */
116c20d2 1754 if (! (NAME (aout, translate_symbol_table)
252b5132
RH		 1755 (abfd, cached,
1756 obj_aout_external_syms (abfd),
1757 obj_aout_external_sym_count (abfd),
1758 obj_aout_external_strings (abfd),
1759 obj_aout_external_string_size (abfd),
b34976b6 1760 FALSE)))
252b5132
RH		 1761 {
1762 free (cached);
b34976b6 1763 return FALSE;
252b5132
RH		 1764 }
1765
1766 bfd_get_symcount (abfd) = obj_aout_external_sym_count (abfd);
1767
1768 obj_aout_symbols (abfd) = cached;
1769
1770 /* It is very likely that anybody who calls this function will not
1771 want the external symbol information, so if it was allocated
1772 because of our call to aout_get_external_symbols, we free it up
1773 right away to save space. */
116c20d2
NC		 1774 if (old_external_syms == NULL
1775 && obj_aout_external_syms (abfd) != NULL)
252b5132
RH		 1776 {
1777#ifdef USE_MMAP
1778 bfd_free_window (&obj_aout_sym_window (abfd));
1779#else
1780 free (obj_aout_external_syms (abfd));
1781#endif
1782 obj_aout_external_syms (abfd) = NULL;
1783 }
1784
b34976b6 1785 return TRUE;
252b5132
RH		 1786}
1787\f
1788/* We use a hash table when writing out symbols so that we only write
1789 out a particular string once. This helps particularly when the
1790 linker writes out stabs debugging entries, because each different
1791 contributing object file tends to have many duplicate stabs
1792 strings.
1793
1794 This hash table code breaks dbx on SunOS 4.1.3, so we don't do it
1795 if BFD_TRADITIONAL_FORMAT is set. */
1796
252b5132
RH		 1797/* Get the index of a string in a strtab, adding it if it is not
1798 already present. */
1799
116c20d2
NC		 1800static inline bfd_size_type
1801add_to_stringtab (bfd *abfd,
1802 struct bfd_strtab_hash *tab,
1803 const char *str,
1804 bfd_boolean copy)
252b5132 1805{
b34976b6 1806 bfd_boolean hash;
91d6fa6a 1807 bfd_size_type str_index;
252b5132
RH		 1808
1809 /* An index of 0 always means the empty string. */
1810 if (str == 0 || *str == '\0')
1811 return 0;
1812
1813 /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx
1814 doesn't understand a hashed string table. */
b34976b6 1815 hash = TRUE;
252b5132 1816 if ((abfd->flags & BFD_TRADITIONAL_FORMAT) != 0)
b34976b6 1817 hash = FALSE;
252b5132 1818
91d6fa6a 1819 str_index = _bfd_stringtab_add (tab, str, hash, copy);
252b5132 1820
91d6fa6a 1821 if (str_index != (bfd_size_type) -1)
116c20d2
NC		 1822 /* Add BYTES_IN_WORD to the return value to account for the
1823 space taken up by the string table size. */
91d6fa6a 1824 str_index += BYTES_IN_WORD;
252b5132 1825
91d6fa6a 1826 return str_index;
252b5132
RH		 1827}
1828
1829/* Write out a strtab. ABFD is already at the right location in the
1830 file. */
1831
b34976b6 1832static bfd_boolean
116c20d2 1833emit_stringtab (bfd *abfd, struct bfd_strtab_hash *tab)
252b5132
RH		 1834{
1835 bfd_byte buffer[BYTES_IN_WORD];
dc810e39 1836 bfd_size_type amt = BYTES_IN_WORD;
252b5132
RH		 1837
1838 /* The string table starts with the size. */
1839 PUT_WORD (abfd, _bfd_stringtab_size (tab) + BYTES_IN_WORD, buffer);
116c20d2 1840 if (bfd_bwrite ((void *) buffer, amt, abfd) != amt)
b34976b6 1841 return FALSE;
252b5132
RH		 1842
1843 return _bfd_stringtab_emit (abfd, tab);
1844}
1845\f
b34976b6 1846bfd_boolean
116c20d2 1847NAME (aout, write_syms) (bfd *abfd)
252b5132
RH		 1848{
1849 unsigned int count ;
1850 asymbol **generic = bfd_get_outsymbols (abfd);
1851 struct bfd_strtab_hash *strtab;
1852
1853 strtab = _bfd_stringtab_init ();
1854 if (strtab == NULL)
b34976b6 1855 return FALSE;
252b5132
RH		 1856
1857 for (count = 0; count < bfd_get_symcount (abfd); count++)
1858 {
1859 asymbol *g = generic[count];
1860 bfd_size_type indx;
1861 struct external_nlist nsp;
dc810e39 1862 bfd_size_type amt;
252b5132 1863
b34976b6 1864 indx = add_to_stringtab (abfd, strtab, g->name, FALSE);
252b5132
RH		 1865 if (indx == (bfd_size_type) -1)
1866 goto error_return;
1867 PUT_WORD (abfd, indx, (bfd_byte *) nsp.e_strx);
1868
923f08ff 1869 if (bfd_asymbol_flavour (g) == abfd->xvec->flavour)
252b5132 1870 {
923f08ff
AM		 1871 H_PUT_16 (abfd, aout_symbol (g)->desc, nsp.e_desc);
1872 H_PUT_8 (abfd, aout_symbol (g)->other, nsp.e_other);
1873 H_PUT_8 (abfd, aout_symbol (g)->type, nsp.e_type);
252b5132
RH		 1874 }
1875 else
1876 {
dc810e39
AM		 1877 H_PUT_16 (abfd, 0, nsp.e_desc);
1878 H_PUT_8 (abfd, 0, nsp.e_other);
1879 H_PUT_8 (abfd, 0, nsp.e_type);
252b5132
RH		 1880 }
1881
1882 if (! translate_to_native_sym_flags (abfd, g, &nsp))
1883 goto error_return;
1884
dc810e39 1885 amt = EXTERNAL_NLIST_SIZE;
116c20d2 1886 if (bfd_bwrite ((void *) &nsp, amt, abfd) != amt)
252b5132
RH		 1887 goto error_return;
1888
1889 /* NB: `KEEPIT' currently overlays `udata.p', so set this only
1890 here, at the end. */
1891 g->KEEPIT = count;
1892 }
1893
1894 if (! emit_stringtab (abfd, strtab))
1895 goto error_return;
1896
1897 _bfd_stringtab_free (strtab);
1898
b34976b6 1899 return TRUE;
252b5132
RH		 1900
1901error_return:
1902 _bfd_stringtab_free (strtab);
b34976b6 1903 return FALSE;
252b5132 1904}
252b5132
RH		 1905\f
1906long
116c20d2 1907NAME (aout, canonicalize_symtab) (bfd *abfd, asymbol **location)
252b5132 1908{
116c20d2
NC		 1909 unsigned int counter = 0;
1910 aout_symbol_type *symbase;
252b5132 1911
116c20d2
NC		 1912 if (!NAME (aout, slurp_symbol_table) (abfd))
1913 return -1;
252b5132 1914
116c20d2
NC		 1915 for (symbase = obj_aout_symbols (abfd);
1916 counter++ < bfd_get_symcount (abfd);
1917 )
1918 *(location++) = (asymbol *) (symbase++);
1919 *location++ =0;
1920 return bfd_get_symcount (abfd);
252b5132 1921}
252b5132 1922\f
f7c33884 1923/* Standard reloc stuff. */
0ef5a5bd 1924/* Output standard relocation information to a file in target byte order. */
252b5132 1925
116c20d2
NC		 1926extern void NAME (aout, swap_std_reloc_out)
1927 (bfd *, arelent *, struct reloc_std_external *);
252b5132
RH		 1928
1929void
116c20d2
NC		 1930NAME (aout, swap_std_reloc_out) (bfd *abfd,
1931 arelent *g,
1932 struct reloc_std_external *natptr)
252b5132
RH		 1933{
1934 int r_index;
1935 asymbol *sym = *(g->sym_ptr_ptr);
1936 int r_extern;
1937 unsigned int r_length;
1938 int r_pcrel;
1939 int r_baserel, r_jmptable, r_relative;
1940 asection *output_section = sym->section->output_section;
1941
923f08ff 1942 PUT_WORD (abfd, g->address, natptr->r_address);
252b5132 1943
f7c33884
NC		 1944 r_length = g->howto->size ; /* Size as a power of two. */
1945 r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */
252b5132
RH		 1946 /* XXX This relies on relocs coming from a.out files. */
1947 r_baserel = (g->howto->type & 8) != 0;
1948 r_jmptable = (g->howto->type & 16) != 0;
1949 r_relative = (g->howto->type & 32) != 0;
1950
f7c33884 1951 /* Name was clobbered by aout_write_syms to be symbol index. */
252b5132
RH		 1952
1953 /* If this relocation is relative to a symbol then set the
1954 r_index to the symbols index, and the r_extern bit.
1955
1956 Absolute symbols can come in in two ways, either as an offset
1957 from the abs section, or as a symbol which has an abs value.
f7c33884 1958 check for that here. */
252b5132 1959
252b5132
RH		 1960 if (bfd_is_com_section (output_section)
1961 || bfd_is_abs_section (output_section)
22184a77
NC		 1962 || bfd_is_und_section (output_section)
1963 /* PR gas/3041 a.out relocs against weak symbols
1964 must be treated as if they were against externs. */
1965 || (sym->flags & BSF_WEAK))
252b5132
RH		 1966 {
1967 if (bfd_abs_section_ptr->symbol == sym)
f7c33884
NC		 1968 {
1969 /* Whoops, looked like an abs symbol, but is
1970 really an offset from the abs section. */
1971 r_index = N_ABS;
1972 r_extern = 0;
1973 }
252b5132 1974 else
f7c33884
NC		 1975 {
1976 /* Fill in symbol. */
1977 r_extern = 1;
1978 r_index = (*(g->sym_ptr_ptr))->KEEPIT;
1979 }
252b5132
RH		 1980 }
1981 else
1982 {
f7c33884 1983 /* Just an ordinary section. */
252b5132
RH		 1984 r_extern = 0;
1985 r_index = output_section->target_index;
1986 }
1987
f7c33884 1988 /* Now the fun stuff. */
923f08ff
AM		 1989 if (bfd_header_big_endian (abfd))
1990 {
252b5132
RH		 1991 natptr->r_index[0] = r_index >> 16;
1992 natptr->r_index[1] = r_index >> 8;
1993 natptr->r_index[2] = r_index;
923f08ff
AM		 1994 natptr->r_type[0] = ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0)
1995 | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0)
1996 | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0)
1997 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0)
1998 | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0)
1999 | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG));
2000 }
2001 else
2002 {
2003 natptr->r_index[2] = r_index >> 16;
2004 natptr->r_index[1] = r_index >> 8;
2005 natptr->r_index[0] = r_index;
2006 natptr->r_type[0] = ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0)
2007 | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0)
2008 | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0)
2009 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0)
2010 | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0)
2011 | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE));
2012 }
252b5132
RH		 2013}
2014
f7c33884 2015/* Extended stuff. */
0ef5a5bd 2016/* Output extended relocation information to a file in target byte order. */
252b5132 2017
116c20d2
NC		 2018extern void NAME (aout, swap_ext_reloc_out)
2019 (bfd *, arelent *, struct reloc_ext_external *);
252b5132
RH		 2020
2021void
116c20d2
NC		 2022NAME (aout, swap_ext_reloc_out) (bfd *abfd,
2023 arelent *g,
2024 struct reloc_ext_external *natptr)
252b5132
RH		 2025{
2026 int r_index;
2027 int r_extern;
2028 unsigned int r_type;
dc810e39 2029 bfd_vma r_addend;
252b5132
RH		 2030 asymbol *sym = *(g->sym_ptr_ptr);
2031 asection *output_section = sym->section->output_section;
2032
2033 PUT_WORD (abfd, g->address, natptr->r_address);
2034
2035 r_type = (unsigned int) g->howto->type;
2036
2037 r_addend = g->addend;
2038 if ((sym->flags & BSF_SECTION_SYM) != 0)
2039 r_addend += (*(g->sym_ptr_ptr))->section->output_section->vma;
2040
2041 /* If this relocation is relative to a symbol then set the
2042 r_index to the symbols index, and the r_extern bit.
2043
2044 Absolute symbols can come in in two ways, either as an offset
2045 from the abs section, or as a symbol which has an abs value.
2046 check for that here. */
252b5132
RH		 2047 if (bfd_is_abs_section (bfd_get_section (sym)))
2048 {
2049 r_extern = 0;
2050 r_index = N_ABS;
2051 }
2052 else if ((sym->flags & BSF_SECTION_SYM) == 0)
2053 {
2054 if (bfd_is_und_section (bfd_get_section (sym))
2055 || (sym->flags & BSF_GLOBAL) != 0)
2056 r_extern = 1;
2057 else
2058 r_extern = 0;
2059 r_index = (*(g->sym_ptr_ptr))->KEEPIT;
2060 }
2061 else
2062 {
f7c33884 2063 /* Just an ordinary section. */
252b5132
RH		 2064 r_extern = 0;
2065 r_index = output_section->target_index;
2066 }
2067
f7c33884 2068 /* Now the fun stuff. */
923f08ff
AM		 2069 if (bfd_header_big_endian (abfd))
2070 {
2071 natptr->r_index[0] = r_index >> 16;
2072 natptr->r_index[1] = r_index >> 8;
2073 natptr->r_index[2] = r_index;
2074 natptr->r_type[0] = ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0)
2075 | (r_type << RELOC_EXT_BITS_TYPE_SH_BIG));
2076 }
2077 else
2078 {
2079 natptr->r_index[2] = r_index >> 16;
2080 natptr->r_index[1] = r_index >> 8;
2081 natptr->r_index[0] = r_index;
2082 natptr->r_type[0] = ((r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0)
2083 | (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE));
2084 }
252b5132
RH		 2085
2086 PUT_WORD (abfd, r_addend, natptr->r_addend);
2087}
2088
2089/* BFD deals internally with all things based from the section they're
2090 in. so, something in 10 bytes into a text section with a base of
2091 50 would have a symbol (.text+10) and know .text vma was 50.
2092
2093 Aout keeps all it's symbols based from zero, so the symbol would
2094 contain 60. This macro subs the base of each section from the value
923f08ff
AM		 2095 to give the true offset from the section. */
2096
2097#define MOVE_ADDRESS(ad) \
2098 if (r_extern) \
2099 { \
2100 /* Undefined symbol. */ \
2101 cache_ptr->sym_ptr_ptr = symbols + r_index; \
252b5132 2102 cache_ptr->addend = ad; \
252b5132 2103 } \
923f08ff
AM		 2104 else \
2105 { \
2106 /* Defined, section relative. Replace symbol with pointer to \
2107 symbol which points to section. */ \
2108 switch (r_index) \
2109 { \
2110 case N_TEXT: \
2111 case N_TEXT | N_EXT: \
2112 cache_ptr->sym_ptr_ptr = obj_textsec (abfd)->symbol_ptr_ptr; \
2113 cache_ptr->addend = ad - su->textsec->vma; \
2114 break; \
2115 case N_DATA: \
2116 case N_DATA | N_EXT: \
2117 cache_ptr->sym_ptr_ptr = obj_datasec (abfd)->symbol_ptr_ptr; \
2118 cache_ptr->addend = ad - su->datasec->vma; \
2119 break; \
2120 case N_BSS: \
2121 case N_BSS | N_EXT: \
2122 cache_ptr->sym_ptr_ptr = obj_bsssec (abfd)->symbol_ptr_ptr; \
2123 cache_ptr->addend = ad - su->bsssec->vma; \
2124 break; \
2125 default: \
2126 case N_ABS: \
2127 case N_ABS | N_EXT: \
2128 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \
2129 cache_ptr->addend = ad; \
2130 break; \
2131 } \
2132 }
252b5132
RH		 2133
2134void
116c20d2
NC		 2135NAME (aout, swap_ext_reloc_in) (bfd *abfd,
2136 struct reloc_ext_external *bytes,
2137 arelent *cache_ptr,
2138 asymbol **symbols,
2139 bfd_size_type symcount)
252b5132
RH		 2140{
2141 unsigned int r_index;
2142 int r_extern;
2143 unsigned int r_type;
2144 struct aoutdata *su = &(abfd->tdata.aout_data->a);
2145
2146 cache_ptr->address = (GET_SWORD (abfd, bytes->r_address));
2147
f7c33884 2148 /* Now the fun stuff. */
923f08ff
AM		 2149 if (bfd_header_big_endian (abfd))
2150 {
d45913a0
DA		 2151 r_index = (((unsigned int) bytes->r_index[0] << 16)
2152 | ((unsigned int) bytes->r_index[1] << 8)
923f08ff
AM		 2153 | bytes->r_index[2]);
2154 r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG));
2155 r_type = ((bytes->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
2156 >> RELOC_EXT_BITS_TYPE_SH_BIG);
2157 }
2158 else
2159 {
d45913a0
DA		 2160 r_index = (((unsigned int) bytes->r_index[2] << 16)
2161 | ((unsigned int) bytes->r_index[1] << 8)
923f08ff
AM		 2162 | bytes->r_index[0]);
2163 r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE));
2164 r_type = ((bytes->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
2165 >> RELOC_EXT_BITS_TYPE_SH_LITTLE);
2166 }
252b5132 2167
ad756e3f
AM		 2168 if (r_type < TABLE_SIZE (howto_table_ext))
2169 cache_ptr->howto = howto_table_ext + r_type;
2170 else
2171 cache_ptr->howto = NULL;
252b5132
RH		 2172
2173 /* Base relative relocs are always against the symbol table,
2174 regardless of the setting of r_extern. r_extern just reflects
2175 whether the symbol the reloc is against is local or global. */
d45913a0
DA		 2176 if (r_type == (unsigned int) RELOC_BASE10
2177 || r_type == (unsigned int) RELOC_BASE13
2178 || r_type == (unsigned int) RELOC_BASE22)
252b5132
RH		 2179 r_extern = 1;
2180
2181 if (r_extern && r_index > symcount)
2182 {
2183 /* We could arrange to return an error, but it might be useful
2184 to see the file even if it is bad. */
2185 r_extern = 0;
2186 r_index = N_ABS;
2187 }
2188
923f08ff 2189 MOVE_ADDRESS (GET_SWORD (abfd, bytes->r_addend));
252b5132
RH		 2190}
2191
2192void
116c20d2
NC		 2193NAME (aout, swap_std_reloc_in) (bfd *abfd,
2194 struct reloc_std_external *bytes,
2195 arelent *cache_ptr,
2196 asymbol **symbols,
2197 bfd_size_type symcount)
252b5132
RH		 2198{
2199 unsigned int r_index;
2200 int r_extern;
2201 unsigned int r_length;
2202 int r_pcrel;
2203 int r_baserel, r_jmptable, r_relative;
2204 struct aoutdata *su = &(abfd->tdata.aout_data->a);
2205 unsigned int howto_idx;
2206
dc810e39 2207 cache_ptr->address = H_GET_32 (abfd, bytes->r_address);
252b5132 2208
f7c33884 2209 /* Now the fun stuff. */
923f08ff
AM		 2210 if (bfd_header_big_endian (abfd))
2211 {
d45913a0
DA		 2212 r_index = (((unsigned int) bytes->r_index[0] << 16)
2213 | ((unsigned int) bytes->r_index[1] << 8)
923f08ff
AM		 2214 | bytes->r_index[2]);
2215 r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
2216 r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
2217 r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_BIG));
2218 r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG));
2219 r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG));
2220 r_length = ((bytes->r_type[0] & RELOC_STD_BITS_LENGTH_BIG)
2221 >> RELOC_STD_BITS_LENGTH_SH_BIG);
2222 }
2223 else
2224 {
d45913a0
DA		 2225 r_index = (((unsigned int) bytes->r_index[2] << 16)
2226 | ((unsigned int) bytes->r_index[1] << 8)
923f08ff
AM		 2227 | bytes->r_index[0]);
2228 r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
2229 r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
2230 r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE));
2231 r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE));
2232 r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE));
2233 r_length = ((bytes->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE)
2234 >> RELOC_STD_BITS_LENGTH_SH_LITTLE);
2235 }
252b5132 2236
923f08ff
AM		 2237 howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel
2238 + 16 * r_jmptable + 32 * r_relative);
ad756e3f
AM		 2239 if (howto_idx < TABLE_SIZE (howto_table_std))
2240 {
2241 cache_ptr->howto = howto_table_std + howto_idx;
2242 if (cache_ptr->howto->type == (unsigned int) -1)
2243 cache_ptr->howto = NULL;
2244 }
2245 else
2246 cache_ptr->howto = NULL;
252b5132
RH		 2247
2248 /* Base relative relocs are always against the symbol table,
2249 regardless of the setting of r_extern. r_extern just reflects
2250 whether the symbol the reloc is against is local or global. */
2251 if (r_baserel)
2252 r_extern = 1;
2253
2254 if (r_extern && r_index > symcount)
2255 {
2256 /* We could arrange to return an error, but it might be useful
2257 to see the file even if it is bad. */
2258 r_extern = 0;
2259 r_index = N_ABS;
2260 }
2261
923f08ff 2262 MOVE_ADDRESS (0);
252b5132
RH		 2263}
2264
2265/* Read and swap the relocs for a section. */
2266
b34976b6 2267bfd_boolean
116c20d2 2268NAME (aout, slurp_reloc_table) (bfd *abfd, sec_ptr asect, asymbol **symbols)
252b5132 2269{
dc810e39 2270 bfd_size_type count;
252b5132 2271 bfd_size_type reloc_size;
116c20d2 2272 void * relocs;
252b5132
RH		 2273 arelent *reloc_cache;
2274 size_t each_size;
2275 unsigned int counter = 0;
2276 arelent *cache_ptr;
dc810e39 2277 bfd_size_type amt;
252b5132
RH		 2278
2279 if (asect->relocation)
b34976b6 2280 return TRUE;
252b5132
RH		 2281
2282 if (asect->flags & SEC_CONSTRUCTOR)
b34976b6 2283 return TRUE;
252b5132
RH		 2284
2285 if (asect == obj_datasec (abfd))
923f08ff 2286 reloc_size = exec_hdr (abfd)->a_drsize;
252b5132 2287 else if (asect == obj_textsec (abfd))
923f08ff 2288 reloc_size = exec_hdr (abfd)->a_trsize;
252b5132
RH		 2289 else if (asect == obj_bsssec (abfd))
2290 reloc_size = 0;
2291 else
2292 {
2293 bfd_set_error (bfd_error_invalid_operation);
b34976b6 2294 return FALSE;
252b5132
RH		 2295 }
2296
078c4bfc
MS		 2297 if (reloc_size == 0)
2298 return TRUE; /* Nothing to be done. */
2299
252b5132 2300 if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0)
b34976b6 2301 return FALSE;
252b5132
RH		 2302
2303 each_size = obj_reloc_entry_size (abfd);
2304
2305 count = reloc_size / each_size;
078c4bfc
MS		 2306 if (count == 0)
2307 return TRUE; /* Nothing to be done. */
252b5132 2308
dc810e39 2309 amt = count * sizeof (arelent);
a50b1753 2310 reloc_cache = (arelent *) bfd_zmalloc (amt);
078c4bfc 2311 if (reloc_cache == NULL)
b34976b6 2312 return FALSE;
252b5132 2313
dc810e39 2314 relocs = bfd_malloc (reloc_size);
078c4bfc 2315 if (relocs == NULL)
252b5132
RH		 2316 {
2317 free (reloc_cache);
b34976b6 2318 return FALSE;
252b5132
RH		 2319 }
2320
dc810e39 2321 if (bfd_bread (relocs, reloc_size, abfd) != reloc_size)
252b5132
RH		 2322 {
2323 free (relocs);
2324 free (reloc_cache);
b34976b6 2325 return FALSE;
252b5132
RH		 2326 }
2327
2328 cache_ptr = reloc_cache;
2329 if (each_size == RELOC_EXT_SIZE)
2330 {
dc810e39 2331 struct reloc_ext_external *rptr = (struct reloc_ext_external *) relocs;
252b5132
RH		 2332
2333 for (; counter < count; counter++, rptr++, cache_ptr++)
1642229e 2334 MY_swap_ext_reloc_in (abfd, rptr, cache_ptr, symbols,
dc810e39 2335 (bfd_size_type) bfd_get_symcount (abfd));
252b5132
RH		 2336 }
2337 else
2338 {
dc810e39 2339 struct reloc_std_external *rptr = (struct reloc_std_external *) relocs;
252b5132
RH		 2340
2341 for (; counter < count; counter++, rptr++, cache_ptr++)
2342 MY_swap_std_reloc_in (abfd, rptr, cache_ptr, symbols,
dc810e39 2343 (bfd_size_type) bfd_get_symcount (abfd));
252b5132
RH		 2344 }
2345
2346 free (relocs);
2347
2348 asect->relocation = reloc_cache;
2349 asect->reloc_count = cache_ptr - reloc_cache;
2350
b34976b6 2351 return TRUE;
252b5132
RH		 2352}
2353
2354/* Write out a relocation section into an object file. */
2355
b34976b6 2356bfd_boolean
116c20d2 2357NAME (aout, squirt_out_relocs) (bfd *abfd, asection *section)
252b5132
RH		 2358{
2359 arelent **generic;
2360 unsigned char *native, *natptr;
2361 size_t each_size;
2362
2363 unsigned int count = section->reloc_count;
dc810e39 2364 bfd_size_type natsize;
252b5132
RH		 2365
2366 if (count == 0 || section->orelocation == NULL)
b34976b6 2367 return TRUE;
252b5132
RH		 2368
2369 each_size = obj_reloc_entry_size (abfd);
dc810e39 2370 natsize = (bfd_size_type) each_size * count;
a50b1753 2371 native = (unsigned char *) bfd_zalloc (abfd, natsize);
252b5132 2372 if (!native)
b34976b6 2373 return FALSE;
252b5132
RH		 2374
2375 generic = section->orelocation;
2376
2377 if (each_size == RELOC_EXT_SIZE)
2378 {
2379 for (natptr = native;
2380 count != 0;
2381 --count, natptr += each_size, ++generic)
1642229e
HPN		 2382 MY_swap_ext_reloc_out (abfd, *generic,
2383 (struct reloc_ext_external *) natptr);
252b5132
RH		 2384 }
2385 else
2386 {
2387 for (natptr = native;
2388 count != 0;
2389 --count, natptr += each_size, ++generic)
923f08ff
AM		 2390 MY_swap_std_reloc_out (abfd, *generic,
2391 (struct reloc_std_external *) natptr);
252b5132
RH		 2392 }
2393
116c20d2 2394 if (bfd_bwrite ((void *) native, natsize, abfd) != natsize)
dc810e39 2395 {
923f08ff 2396 bfd_release (abfd, native);
b34976b6 2397 return FALSE;
dc810e39 2398 }
252b5132
RH		 2399 bfd_release (abfd, native);
2400
b34976b6 2401 return TRUE;
252b5132
RH		 2402}
2403
f7c33884
NC		 2404/* This is stupid. This function should be a boolean predicate. */
2405
252b5132 2406long
116c20d2
NC		 2407NAME (aout, canonicalize_reloc) (bfd *abfd,
2408 sec_ptr section,
2409 arelent **relptr,
2410 asymbol **symbols)
252b5132
RH		 2411{
2412 arelent *tblptr = section->relocation;
2413 unsigned int count;
2414
2415 if (section == obj_bsssec (abfd))
2416 {
2417 *relptr = NULL;
2418 return 0;
2419 }
2420
116c20d2 2421 if (!(tblptr || NAME (aout, slurp_reloc_table) (abfd, section, symbols)))
252b5132
RH		 2422 return -1;
2423
923f08ff
AM		 2424 if (section->flags & SEC_CONSTRUCTOR)
2425 {
2426 arelent_chain *chain = section->constructor_chain;
2427 for (count = 0; count < section->reloc_count; count ++)
2428 {
2429 *relptr ++ = &chain->relent;
2430 chain = chain->next;
2431 }
252b5132 2432 }
923f08ff
AM		 2433 else
2434 {
2435 tblptr = section->relocation;
252b5132 2436
923f08ff
AM		 2437 for (count = 0; count++ < section->reloc_count; )
2438 {
2439 *relptr++ = tblptr++;
2440 }
2441 }
252b5132
RH		 2442 *relptr = 0;
2443
2444 return section->reloc_count;
2445}
2446
2447long
116c20d2 2448NAME (aout, get_reloc_upper_bound) (bfd *abfd, sec_ptr asect)
252b5132 2449{
923f08ff
AM		 2450 if (bfd_get_format (abfd) != bfd_object)
2451 {
2452 bfd_set_error (bfd_error_invalid_operation);
2453 return -1;
2454 }
f7c33884 2455
923f08ff 2456 if (asect->flags & SEC_CONSTRUCTOR)
116c20d2 2457 return sizeof (arelent *) * (asect->reloc_count + 1);
252b5132
RH		 2458
2459 if (asect == obj_datasec (abfd))
116c20d2
NC		 2460 return sizeof (arelent *)
2461 * ((exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd))
2462 + 1);
252b5132
RH		 2463
2464 if (asect == obj_textsec (abfd))
116c20d2
NC		 2465 return sizeof (arelent *)
2466 * ((exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd))
2467 + 1);
252b5132
RH		 2468
2469 if (asect == obj_bsssec (abfd))
2470 return sizeof (arelent *);
2471
2472 if (asect == obj_bsssec (abfd))
2473 return 0;
2474
2475 bfd_set_error (bfd_error_invalid_operation);
2476 return -1;
2477}
252b5132
RH		 2478\f
2479long
116c20d2 2480NAME (aout, get_symtab_upper_bound) (bfd *abfd)
252b5132 2481{
116c20d2 2482 if (!NAME (aout, slurp_symbol_table) (abfd))
252b5132
RH		 2483 return -1;
2484
2485 return (bfd_get_symcount (abfd)+1) * (sizeof (aout_symbol_type *));
2486}
2487
1725a96e 2488alent *
116c20d2
NC		 2489NAME (aout, get_lineno) (bfd *ignore_abfd ATTRIBUTE_UNUSED,
2490 asymbol *ignore_symbol ATTRIBUTE_UNUSED)
252b5132 2491{
116c20d2 2492 return NULL;
252b5132
RH		 2493}
2494
252b5132 2495void
116c20d2
NC		 2496NAME (aout, get_symbol_info) (bfd *ignore_abfd ATTRIBUTE_UNUSED,
2497 asymbol *symbol,
2498 symbol_info *ret)
252b5132
RH		 2499{
2500 bfd_symbol_info (symbol, ret);
2501
2502 if (ret->type == '?')
2503 {
923f08ff 2504 int type_code = aout_symbol (symbol)->type & 0xff;
252b5132
RH		 2505 const char *stab_name = bfd_get_stab_name (type_code);
2506 static char buf[10];
2507
2508 if (stab_name == NULL)
2509 {
e60b52c6 2510 sprintf (buf, "(%d)", type_code);
252b5132
RH		 2511 stab_name = buf;
2512 }
2513 ret->type = '-';
2514 ret->stab_type = type_code;
923f08ff
AM		 2515 ret->stab_other = (unsigned) (aout_symbol (symbol)->other & 0xff);
2516 ret->stab_desc = (unsigned) (aout_symbol (symbol)->desc & 0xffff);
252b5132
RH		 2517 ret->stab_name = stab_name;
2518 }
2519}
2520
252b5132 2521void
116c20d2
NC		 2522NAME (aout, print_symbol) (bfd *abfd,
2523 void * afile,
2524 asymbol *symbol,
2525 bfd_print_symbol_type how)
252b5132
RH		 2526{
2527 FILE *file = (FILE *)afile;
2528
923f08ff 2529 switch (how)
252b5132 2530 {
923f08ff
AM		 2531 case bfd_print_symbol_name:
2532 if (symbol->name)
2533 fprintf (file,"%s", symbol->name);
2534 break;
2535 case bfd_print_symbol_more:
2536 fprintf (file,"%4x %2x %2x",
2537 (unsigned) (aout_symbol (symbol)->desc & 0xffff),
2538 (unsigned) (aout_symbol (symbol)->other & 0xff),
2539 (unsigned) (aout_symbol (symbol)->type));
2540 break;
2541 case bfd_print_symbol_all:
2542 {
2543 const char *section_name = symbol->section->name;
252b5132 2544
116c20d2 2545 bfd_print_symbol_vandf (abfd, (void *)file, symbol);
252b5132 2546
923f08ff
AM		 2547 fprintf (file," %-5s %04x %02x %02x",
2548 section_name,
2549 (unsigned) (aout_symbol (symbol)->desc & 0xffff),
2550 (unsigned) (aout_symbol (symbol)->other & 0xff),
2551 (unsigned) (aout_symbol (symbol)->type & 0xff));
2552 if (symbol->name)
2553 fprintf (file," %s", symbol->name);
2554 }
2555 break;
252b5132 2556 }
252b5132
RH		 2557}
2558
2559/* If we don't have to allocate more than 1MB to hold the generic
2560 symbols, we use the generic minisymbol methord: it's faster, since
2561 it only translates the symbols once, not multiple times. */
2562#define MINISYM_THRESHOLD (1000000 / sizeof (asymbol))
2563
2564/* Read minisymbols. For minisymbols, we use the unmodified a.out
2565 symbols. The minisymbol_to_symbol function translates these into
2566 BFD asymbol structures. */
2567
2568long
116c20d2
NC		 2569NAME (aout, read_minisymbols) (bfd *abfd,
2570 bfd_boolean dynamic,
2571 void * *minisymsp,
2572 unsigned int *sizep)
252b5132
RH		 2573{
2574 if (dynamic)
116c20d2
NC		 2575 /* We could handle the dynamic symbols here as well, but it's
2576 easier to hand them off. */
2577 return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep);
252b5132
RH		 2578
2579 if (! aout_get_external_symbols (abfd))
2580 return -1;
2581
2582 if (obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD)
2583 return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep);
2584
116c20d2 2585 *minisymsp = (void *) obj_aout_external_syms (abfd);
252b5132
RH		 2586
2587 /* By passing the external symbols back from this routine, we are
2588 giving up control over the memory block. Clear
2589 obj_aout_external_syms, so that we do not try to free it
2590 ourselves. */
2591 obj_aout_external_syms (abfd) = NULL;
2592
2593 *sizep = EXTERNAL_NLIST_SIZE;
2594 return obj_aout_external_sym_count (abfd);
2595}
2596
2597/* Convert a minisymbol to a BFD asymbol. A minisymbol is just an
2598 unmodified a.out symbol. The SYM argument is a structure returned
2599 by bfd_make_empty_symbol, which we fill in here. */
2600
2601asymbol *
116c20d2
NC		 2602NAME (aout, minisymbol_to_symbol) (bfd *abfd,
2603 bfd_boolean dynamic,
2604 const void * minisym,
2605 asymbol *sym)
252b5132
RH		 2606{
2607 if (dynamic
2608 || obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD)
2609 return _bfd_generic_minisymbol_to_symbol (abfd, dynamic, minisym, sym);
2610
2611 memset (sym, 0, sizeof (aout_symbol_type));
2612
2613 /* We call translate_symbol_table to translate a single symbol. */
116c20d2 2614 if (! (NAME (aout, translate_symbol_table)
252b5132
RH		 2615 (abfd,
2616 (aout_symbol_type *) sym,
2617 (struct external_nlist *) minisym,
2618 (bfd_size_type) 1,
2619 obj_aout_external_strings (abfd),
2620 obj_aout_external_string_size (abfd),
b34976b6 2621 FALSE)))
252b5132
RH		 2622 return NULL;
2623
2624 return sym;
2625}
2626
f7c33884
NC		 2627/* Provided a BFD, a section and an offset into the section, calculate
2628 and return the name of the source file and the line nearest to the
2629 wanted location. */
252b5132 2630
b34976b6 2631bfd_boolean
116c20d2 2632NAME (aout, find_nearest_line) (bfd *abfd,
116c20d2 2633 asymbol **symbols,
fb167eb2 2634 asection *section,
116c20d2
NC		 2635 bfd_vma offset,
2636 const char **filename_ptr,
2637 const char **functionname_ptr,
fb167eb2
AM		 2638 unsigned int *line_ptr,
2639 unsigned int *disriminator_ptr)
252b5132 2640{
f7c33884 2641 /* Run down the file looking for the filename, function and linenumber. */
252b5132 2642 asymbol **p;
dc810e39
AM		 2643 const char *directory_name = NULL;
2644 const char *main_file_name = NULL;
2645 const char *current_file_name = NULL;
116c20d2 2646 const char *line_file_name = NULL; /* Value of current_file_name at line number. */
dc810e39 2647 const char *line_directory_name = NULL; /* Value of directory_name at line number. */
252b5132
RH		 2648 bfd_vma low_line_vma = 0;
2649 bfd_vma low_func_vma = 0;
2650 asymbol *func = 0;
dc810e39 2651 bfd_size_type filelen, funclen;
252b5132
RH		 2652 char *buf;
2653
2654 *filename_ptr = abfd->filename;
2655 *functionname_ptr = 0;
2656 *line_ptr = 0;
fb167eb2
AM		 2657 if (disriminator_ptr)
2658 *disriminator_ptr = 0;
f7c33884 2659
116c20d2 2660 if (symbols != NULL)
923f08ff
AM		 2661 {
2662 for (p = symbols; *p; p++)
2663 {
2664 aout_symbol_type *q = (aout_symbol_type *) (*p);
2665 next:
2666 switch (q->type)
2667 {
2668 case N_TEXT:
2669 /* If this looks like a file name symbol, and it comes after
2670 the line number we have found so far, but before the
2671 offset, then we have probably not found the right line
2672 number. */
2673 if (q->symbol.value <= offset
2674 && ((q->symbol.value > low_line_vma
2675 && (line_file_name != NULL
2676 || *line_ptr != 0))
2677 || (q->symbol.value > low_func_vma
2678 && func != NULL)))
2679 {
2680 const char *symname;
252b5132 2681
923f08ff
AM		 2682 symname = q->symbol.name;
2683 if (strcmp (symname + strlen (symname) - 2, ".o") == 0)
2684 {
2685 if (q->symbol.value > low_line_vma)
2686 {
2687 *line_ptr = 0;
2688 line_file_name = NULL;
2689 }
2690 if (q->symbol.value > low_func_vma)
2691 func = NULL;
2692 }
2693 }
2694 break;
252b5132 2695
923f08ff
AM		 2696 case N_SO:
2697 /* If this symbol is less than the offset, but greater than
2698 the line number we have found so far, then we have not
2699 found the right line number. */
2700 if (q->symbol.value <= offset)
2701 {
2702 if (q->symbol.value > low_line_vma)
2703 {
2704 *line_ptr = 0;
2705 line_file_name = NULL;
2706 }
2707 if (q->symbol.value > low_func_vma)
2708 func = NULL;
2709 }
252b5132 2710
923f08ff
AM		 2711 main_file_name = current_file_name = q->symbol.name;
2712 /* Look ahead to next symbol to check if that too is an N_SO. */
2713 p++;
2714 if (*p == NULL)
c3864421 2715 goto done;
923f08ff
AM		 2716 q = (aout_symbol_type *) (*p);
2717 if (q->type != (int)N_SO)
2718 goto next;
2719
2720 /* Found a second N_SO First is directory; second is filename. */
2721 directory_name = current_file_name;
2722 main_file_name = current_file_name = q->symbol.name;
2723 if (obj_textsec (abfd) != section)
2724 goto done;
2725 break;
2726 case N_SOL:
2727 current_file_name = q->symbol.name;
2728 break;
252b5132 2729
923f08ff 2730 case N_SLINE:
252b5132 2731
923f08ff
AM		 2732 case N_DSLINE:
2733 case N_BSLINE:
2734 /* We'll keep this if it resolves nearer than the one we have
2735 already. */
2736 if (q->symbol.value >= low_line_vma
2737 && q->symbol.value <= offset)
2738 {
2739 *line_ptr = q->desc;
2740 low_line_vma = q->symbol.value;
2741 line_file_name = current_file_name;
2742 line_directory_name = directory_name;
2743 }
2744 break;
2745 case N_FUN:
2746 {
f7c33884 2747 /* We'll keep this if it is nearer than the one we have already. */
923f08ff 2748 if (q->symbol.value >= low_func_vma &&
f7c33884
NC		 2749 q->symbol.value <= offset)
2750 {
2751 low_func_vma = q->symbol.value;
2752 func = (asymbol *)q;
2753 }
923f08ff
AM		 2754 else if (q->symbol.value > offset)
2755 goto done;
2756 }
2757 break;
2758 }
252b5132 2759 }
252b5132 2760 }
252b5132
RH		 2761
2762 done:
2763 if (*line_ptr != 0)
2764 {
2765 main_file_name = line_file_name;
2766 directory_name = line_directory_name;
2767 }
2768
2769 if (main_file_name == NULL
5af11cab 2770 || IS_ABSOLUTE_PATH (main_file_name)
252b5132
RH		 2771 || directory_name == NULL)
2772 filelen = 0;
2773 else
2774 filelen = strlen (directory_name) + strlen (main_file_name);
f7c33884 2775
252b5132
RH		 2776 if (func == NULL)
2777 funclen = 0;
2778 else
2779 funclen = strlen (bfd_asymbol_name (func));
2780
2781 if (adata (abfd).line_buf != NULL)
2782 free (adata (abfd).line_buf);
f7c33884 2783
252b5132
RH		 2784 if (filelen + funclen == 0)
2785 adata (abfd).line_buf = buf = NULL;
2786 else
2787 {
a50b1753 2788 buf = (char *) bfd_malloc (filelen + funclen + 3);
252b5132
RH		 2789 adata (abfd).line_buf = buf;
2790 if (buf == NULL)
b34976b6 2791 return FALSE;
252b5132
RH		 2792 }
2793
2794 if (main_file_name != NULL)
2795 {
5af11cab 2796 if (IS_ABSOLUTE_PATH (main_file_name) || directory_name == NULL)
252b5132
RH		 2797 *filename_ptr = main_file_name;
2798 else
2799 {
2800 sprintf (buf, "%s%s", directory_name, main_file_name);
2801 *filename_ptr = buf;
2802 buf += filelen + 1;
2803 }
2804 }
2805
2806 if (func)
2807 {
2808 const char *function = func->name;
dc810e39 2809 char *colon;
252b5132
RH		 2810
2811 /* The caller expects a symbol name. We actually have a
2812 function name, without the leading underscore. Put the
2813 underscore back in, so that the caller gets a symbol name. */
2814 if (bfd_get_symbol_leading_char (abfd) == '\0')
2815 strcpy (buf, function);
2816 else
2817 {
2818 buf[0] = bfd_get_symbol_leading_char (abfd);
2819 strcpy (buf + 1, function);
2820 }
f7c33884 2821 /* Have to remove : stuff. */
dc810e39
AM		 2822 colon = strchr (buf, ':');
2823 if (colon != NULL)
2824 *colon = '\0';
252b5132
RH		 2825 *functionname_ptr = buf;
2826 }
2827
b34976b6 2828 return TRUE;
252b5132
RH		 2829}
2830
252b5132 2831int
a6b96beb
AM		 2832NAME (aout, sizeof_headers) (bfd *abfd,
2833 struct bfd_link_info *info ATTRIBUTE_UNUSED)
252b5132 2834{
923f08ff 2835 return adata (abfd).exec_bytes_size;
252b5132
RH		 2836}
2837
2838/* Free all information we have cached for this BFD. We can always
2839 read it again later if we need it. */
2840
b34976b6 2841bfd_boolean
116c20d2 2842NAME (aout, bfd_free_cached_info) (bfd *abfd)
252b5132
RH		 2843{
2844 asection *o;
2845
920581c5
L		 2846 if (bfd_get_format (abfd) != bfd_object
2847 || abfd->tdata.aout_data == NULL)
b34976b6 2848 return TRUE;
252b5132
RH		 2849
2850#define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; }
2851 BFCI_FREE (obj_aout_symbols (abfd));
2852#ifdef USE_MMAP
2853 obj_aout_external_syms (abfd) = 0;
2854 bfd_free_window (&obj_aout_sym_window (abfd));
2855 bfd_free_window (&obj_aout_string_window (abfd));
2856 obj_aout_external_strings (abfd) = 0;
2857#else
2858 BFCI_FREE (obj_aout_external_syms (abfd));
2859 BFCI_FREE (obj_aout_external_strings (abfd));
2860#endif
116c20d2 2861 for (o = abfd->sections; o != NULL; o = o->next)
252b5132
RH		 2862 BFCI_FREE (o->relocation);
2863#undef BFCI_FREE
2864
b34976b6 2865 return TRUE;
252b5132
RH		 2866}
2867\f
2868/* a.out link code. */
2869
252b5132
RH		 2870/* Routine to create an entry in an a.out link hash table. */
2871
2872struct bfd_hash_entry *
116c20d2
NC		 2873NAME (aout, link_hash_newfunc) (struct bfd_hash_entry *entry,
2874 struct bfd_hash_table *table,
2875 const char *string)
252b5132
RH		 2876{
2877 struct aout_link_hash_entry *ret = (struct aout_link_hash_entry *) entry;
2878
2879 /* Allocate the structure if it has not already been allocated by a
2880 subclass. */
116c20d2 2881 if (ret == NULL)
a50b1753
NC		 2882 ret = (struct aout_link_hash_entry *) bfd_hash_allocate (table,
2883 sizeof (* ret));
116c20d2
NC		 2884 if (ret == NULL)
2885 return NULL;
252b5132
RH		 2886
2887 /* Call the allocation method of the superclass. */
2888 ret = ((struct aout_link_hash_entry *)
2889 _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2890 table, string));
2891 if (ret)
2892 {
2893 /* Set local fields. */
b34976b6 2894 ret->written = FALSE;
252b5132
RH		 2895 ret->indx = -1;
2896 }
2897
2898 return (struct bfd_hash_entry *) ret;
2899}
2900
2901/* Initialize an a.out link hash table. */
2902
b34976b6 2903bfd_boolean
116c20d2
NC		 2904NAME (aout, link_hash_table_init) (struct aout_link_hash_table *table,
2905 bfd *abfd,
2906 struct bfd_hash_entry *(*newfunc)
2907 (struct bfd_hash_entry *, struct bfd_hash_table *,
66eb6687
AM		 2908 const char *),
2909 unsigned int entsize)
252b5132 2910{
66eb6687 2911 return _bfd_link_hash_table_init (&table->root, abfd, newfunc, entsize);
252b5132
RH		 2912}
2913
2914/* Create an a.out link hash table. */
2915
2916struct bfd_link_hash_table *
116c20d2 2917NAME (aout, link_hash_table_create) (bfd *abfd)
252b5132
RH		 2918{
2919 struct aout_link_hash_table *ret;
116c20d2 2920 bfd_size_type amt = sizeof (* ret);
252b5132 2921
a50b1753 2922 ret = (struct aout_link_hash_table *) bfd_malloc (amt);
252b5132 2923 if (ret == NULL)
116c20d2 2924 return NULL;
5ed6aba4 2925
66eb6687
AM		 2926 if (!NAME (aout, link_hash_table_init) (ret, abfd,
2927 NAME (aout, link_hash_newfunc),
2928 sizeof (struct aout_link_hash_entry)))
252b5132
RH		 2929 {
2930 free (ret);
116c20d2 2931 return NULL;
252b5132
RH		 2932 }
2933 return &ret->root;
2934}
2935
116c20d2 2936/* Add all symbols from an object file to the hash table. */
252b5132 2937
b34976b6 2938static bfd_boolean
116c20d2 2939aout_link_add_symbols (bfd *abfd, struct bfd_link_info *info)
252b5132 2940{
116c20d2
NC		 2941 bfd_boolean (*add_one_symbol)
2942 (struct bfd_link_info *, bfd *, const char *, flagword, asection *,
2943 bfd_vma, const char *, bfd_boolean, bfd_boolean,
2944 struct bfd_link_hash_entry **);
2945 struct external_nlist *syms;
2946 bfd_size_type sym_count;
2947 char *strings;
2948 bfd_boolean copy;
2949 struct aout_link_hash_entry **sym_hash;
2950 struct external_nlist *p;
2951 struct external_nlist *pend;
2952 bfd_size_type amt;
252b5132 2953
116c20d2
NC		 2954 syms = obj_aout_external_syms (abfd);
2955 sym_count = obj_aout_external_sym_count (abfd);
2956 strings = obj_aout_external_strings (abfd);
2957 if (info->keep_memory)
2958 copy = FALSE;
2959 else
2960 copy = TRUE;
252b5132 2961
116c20d2 2962 if (aout_backend_info (abfd)->add_dynamic_symbols != NULL)
252b5132 2963 {
116c20d2
NC		 2964 if (! ((*aout_backend_info (abfd)->add_dynamic_symbols)
2965 (abfd, info, &syms, &sym_count, &strings)))
b34976b6 2966 return FALSE;
252b5132
RH		 2967 }
2968
20c6e70e
MS		 2969 if (sym_count == 0)
2970 return TRUE; /* Nothing to do. */
2971
116c20d2
NC		 2972 /* We keep a list of the linker hash table entries that correspond
2973 to particular symbols. We could just look them up in the hash
2974 table, but keeping the list is more efficient. Perhaps this
2975 should be conditional on info->keep_memory. */
2976 amt = sym_count * sizeof (struct aout_link_hash_entry *);
a50b1753 2977 sym_hash = (struct aout_link_hash_entry **) bfd_alloc (abfd, amt);
20c6e70e 2978 if (sym_hash == NULL)
116c20d2
NC		 2979 return FALSE;
2980 obj_aout_sym_hashes (abfd) = sym_hash;
252b5132 2981
116c20d2
NC		 2982 add_one_symbol = aout_backend_info (abfd)->add_one_symbol;
2983 if (add_one_symbol == NULL)
2984 add_one_symbol = _bfd_generic_link_add_one_symbol;
252b5132 2985
116c20d2
NC		 2986 p = syms;
2987 pend = p + sym_count;
2988 for (; p < pend; p++, sym_hash++)
252b5132 2989 {
116c20d2 2990 int type;
252b5132 2991 const char *name;
116c20d2
NC		 2992 bfd_vma value;
2993 asection *section;
2994 flagword flags;
2995 const char *string;
252b5132 2996
116c20d2 2997 *sym_hash = NULL;
252b5132 2998
116c20d2 2999 type = H_GET_8 (abfd, p->e_type);
252b5132 3000
116c20d2
NC		 3001 /* Ignore debugging symbols. */
3002 if ((type & N_STAB) != 0)
3003 continue;
252b5132 3004
e517df3d
NC		 3005 /* PR 19629: Corrupt binaries can contain illegal string offsets. */
3006 if (GET_WORD (abfd, p->e_strx) > obj_aout_external_string_size (abfd))
3007 return FALSE;
116c20d2 3008 name = strings + GET_WORD (abfd, p->e_strx);
e517df3d 3009
116c20d2
NC		 3010 value = GET_WORD (abfd, p->e_value);
3011 flags = BSF_GLOBAL;
3012 string = NULL;
3013 switch (type)
252b5132 3014 {
116c20d2
NC		 3015 default:
3016 abort ();
f7c33884 3017
116c20d2
NC		 3018 case N_UNDF:
3019 case N_ABS:
3020 case N_TEXT:
3021 case N_DATA:
3022 case N_BSS:
3023 case N_FN_SEQ:
3024 case N_COMM:
3025 case N_SETV:
3026 case N_FN:
3027 /* Ignore symbols that are not externally visible. */
3028 continue;
3029 case N_INDR:
3030 /* Ignore local indirect symbol. */
3031 ++p;
3032 ++sym_hash;
3033 continue;
252b5132 3034
116c20d2
NC		 3035 case N_UNDF | N_EXT:
3036 if (value == 0)
f7c33884 3037 {
116c20d2
NC		 3038 section = bfd_und_section_ptr;
3039 flags = 0;
252b5132
RH		 3040 }
3041 else
3042 section = bfd_com_section_ptr;
3043 break;
3044 case N_ABS | N_EXT:
3045 section = bfd_abs_section_ptr;
3046 break;
3047 case N_TEXT | N_EXT:
3048 section = obj_textsec (abfd);
3049 value -= bfd_get_section_vma (abfd, section);
3050 break;
3051 case N_DATA | N_EXT:
3052 case N_SETV | N_EXT:
3053 /* Treat N_SETV symbols as N_DATA symbol; see comment in
3054 translate_from_native_sym_flags. */
3055 section = obj_datasec (abfd);
3056 value -= bfd_get_section_vma (abfd, section);
3057 break;
3058 case N_BSS | N_EXT:
3059 section = obj_bsssec (abfd);
3060 value -= bfd_get_section_vma (abfd, section);
3061 break;
3062 case N_INDR | N_EXT:
3063 /* An indirect symbol. The next symbol is the symbol
3064 which this one really is. */
3065 BFD_ASSERT (p + 1 < pend);
3066 ++p;
e517df3d
NC		 3067 /* PR 19629: Corrupt binaries can contain illegal string offsets. */
3068 if (GET_WORD (abfd, p->e_strx) > obj_aout_external_string_size (abfd))
3069 return FALSE;
252b5132
RH		 3070 string = strings + GET_WORD (abfd, p->e_strx);
3071 section = bfd_ind_section_ptr;
3072 flags |= BSF_INDIRECT;
3073 break;
3074 case N_COMM | N_EXT:
3075 section = bfd_com_section_ptr;
3076 break;
3077 case N_SETA: case N_SETA | N_EXT:
3078 section = bfd_abs_section_ptr;
3079 flags |= BSF_CONSTRUCTOR;
3080 break;
3081 case N_SETT: case N_SETT | N_EXT:
3082 section = obj_textsec (abfd);
3083 flags |= BSF_CONSTRUCTOR;
3084 value -= bfd_get_section_vma (abfd, section);
3085 break;
3086 case N_SETD: case N_SETD | N_EXT:
3087 section = obj_datasec (abfd);
3088 flags |= BSF_CONSTRUCTOR;
3089 value -= bfd_get_section_vma (abfd, section);
3090 break;
3091 case N_SETB: case N_SETB | N_EXT:
3092 section = obj_bsssec (abfd);
3093 flags |= BSF_CONSTRUCTOR;
3094 value -= bfd_get_section_vma (abfd, section);
3095 break;
3096 case N_WARNING:
3097 /* A warning symbol. The next symbol is the one to warn
9f400ee9
HPN		 3098 about. If there is no next symbol, just look away. */
3099 if (p + 1 >= pend)
3100 return TRUE;
252b5132
RH		 3101 ++p;
3102 string = name;
e517df3d
NC		 3103 /* PR 19629: Corrupt binaries can contain illegal string offsets. */
3104 if (GET_WORD (abfd, p->e_strx) > obj_aout_external_string_size (abfd))
3105 return FALSE;
252b5132
RH		 3106 name = strings + GET_WORD (abfd, p->e_strx);
3107 section = bfd_und_section_ptr;
3108 flags |= BSF_WARNING;
3109 break;
3110 case N_WEAKU:
3111 section = bfd_und_section_ptr;
3112 flags = BSF_WEAK;
3113 break;
3114 case N_WEAKA:
3115 section = bfd_abs_section_ptr;
3116 flags = BSF_WEAK;
3117 break;
3118 case N_WEAKT:
3119 section = obj_textsec (abfd);
3120 value -= bfd_get_section_vma (abfd, section);
3121 flags = BSF_WEAK;
3122 break;
3123 case N_WEAKD:
3124 section = obj_datasec (abfd);
3125 value -= bfd_get_section_vma (abfd, section);
3126 flags = BSF_WEAK;
3127 break;
3128 case N_WEAKB:
3129 section = obj_bsssec (abfd);
3130 value -= bfd_get_section_vma (abfd, section);
3131 flags = BSF_WEAK;
3132 break;
3133 }
3134
3135 if (! ((*add_one_symbol)
b34976b6 3136 (info, abfd, name, flags, section, value, string, copy, FALSE,
252b5132 3137 (struct bfd_link_hash_entry **) sym_hash)))
b34976b6 3138 return FALSE;
252b5132
RH		 3139
3140 /* Restrict the maximum alignment of a common symbol based on
3141 the architecture, since a.out has no way to represent
3142 alignment requirements of a section in a .o file. FIXME:
3143 This isn't quite right: it should use the architecture of the
3144 output file, not the input files. */
3145 if ((*sym_hash)->root.type == bfd_link_hash_common
3146 && ((*sym_hash)->root.u.c.p->alignment_power >
3147 bfd_get_arch_info (abfd)->section_align_power))
3148 (*sym_hash)->root.u.c.p->alignment_power =
3149 bfd_get_arch_info (abfd)->section_align_power;
3150
3151 /* If this is a set symbol, and we are not building sets, then
3152 it is possible for the hash entry to not have been set. In
3153 such a case, treat the symbol as not globally defined. */
3154 if ((*sym_hash)->root.type == bfd_link_hash_new)
3155 {
3156 BFD_ASSERT ((flags & BSF_CONSTRUCTOR) != 0);
3157 *sym_hash = NULL;
3158 }
3159
3160 if (type == (N_INDR | N_EXT) || type == N_WARNING)
3161 ++sym_hash;
3162 }
3163
b34976b6 3164 return TRUE;
252b5132 3165}
252b5132 3166
116c20d2
NC		 3167/* Free up the internal symbols read from an a.out file. */
3168
3169static bfd_boolean
3170aout_link_free_symbols (bfd *abfd)
252b5132 3171{
116c20d2
NC		 3172 if (obj_aout_external_syms (abfd) != NULL)
3173 {
3174#ifdef USE_MMAP
3175 bfd_free_window (&obj_aout_sym_window (abfd));
3176#else
3177 free ((void *) obj_aout_external_syms (abfd));
3178#endif
3179 obj_aout_external_syms (abfd) = NULL;
3180 }
3181 if (obj_aout_external_strings (abfd) != NULL)
3182 {
3183#ifdef USE_MMAP
3184 bfd_free_window (&obj_aout_string_window (abfd));
3185#else
3186 free ((void *) obj_aout_external_strings (abfd));
3187#endif
3188 obj_aout_external_strings (abfd) = NULL;
3189 }
3190 return TRUE;
3191}
252b5132 3192
116c20d2 3193/* Add symbols from an a.out object file. */
252b5132 3194
116c20d2
NC		 3195static bfd_boolean
3196aout_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info)
252b5132 3197{
116c20d2
NC		 3198 if (! aout_get_external_symbols (abfd))
3199 return FALSE;
3200 if (! aout_link_add_symbols (abfd, info))
3201 return FALSE;
3202 if (! info->keep_memory)
3203 {
3204 if (! aout_link_free_symbols (abfd))
3205 return FALSE;
3206 }
3207 return TRUE;
3208}
252b5132 3209
116c20d2
NC		 3210/* Look through the internal symbols to see if this object file should
3211 be included in the link. We should include this object file if it
3212 defines any symbols which are currently undefined. If this object
3213 file defines a common symbol, then we may adjust the size of the
3214 known symbol but we do not include the object file in the link
3215 (unless there is some other reason to include it). */
252b5132 3216
116c20d2
NC		 3217static bfd_boolean
3218aout_link_check_ar_symbols (bfd *abfd,
3219 struct bfd_link_info *info,
5d3236ee
DK		 3220 bfd_boolean *pneeded,
3221 bfd **subsbfd)
252b5132 3222{
116c20d2
NC		 3223 struct external_nlist *p;
3224 struct external_nlist *pend;
3225 char *strings;
252b5132 3226
116c20d2 3227 *pneeded = FALSE;
252b5132 3228
116c20d2
NC		 3229 /* Look through all the symbols. */
3230 p = obj_aout_external_syms (abfd);
3231 pend = p + obj_aout_external_sym_count (abfd);
3232 strings = obj_aout_external_strings (abfd);
3233 for (; p < pend; p++)
3234 {
3235 int type = H_GET_8 (abfd, p->e_type);
3236 const char *name;
3237 struct bfd_link_hash_entry *h;
252b5132 3238
116c20d2
NC		 3239 /* Ignore symbols that are not externally visible. This is an
3240 optimization only, as we check the type more thoroughly
3241 below. */
3242 if (((type & N_EXT) == 0
3243 || (type & N_STAB) != 0
3244 || type == N_FN)
3245 && type != N_WEAKA
3246 && type != N_WEAKT
3247 && type != N_WEAKD
3248 && type != N_WEAKB)
3249 {
3250 if (type == N_WARNING
3251 || type == N_INDR)
3252 ++p;
3253 continue;
3254 }
3255
3256 name = strings + GET_WORD (abfd, p->e_strx);
3257 h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE);
3258
3259 /* We are only interested in symbols that are currently
3260 undefined or common. */
3261 if (h == NULL
3262 || (h->type != bfd_link_hash_undefined
3263 && h->type != bfd_link_hash_common))
3264 {
3265 if (type == (N_INDR | N_EXT))
3266 ++p;
3267 continue;
3268 }
3269
3270 if (type == (N_TEXT | N_EXT)
3271 || type == (N_DATA | N_EXT)
3272 || type == (N_BSS | N_EXT)
3273 || type == (N_ABS | N_EXT)
3274 || type == (N_INDR | N_EXT))
3275 {
3276 /* This object file defines this symbol. We must link it
3277 in. This is true regardless of whether the current
3278 definition of the symbol is undefined or common.
3279
3280 If the current definition is common, we have a case in
3281 which we have already seen an object file including:
3282 int a;
3283 and this object file from the archive includes:
3284 int a = 5;
3285 In such a case, whether to include this object is target
3286 dependant for backward compatibility.
3287
3288 FIXME: The SunOS 4.1.3 linker will pull in the archive
3289 element if the symbol is defined in the .data section,
3290 but not if it is defined in the .text section. That
3291 seems a bit crazy to me, and it has not been implemented
3292 yet. However, it might be correct. */
3293 if (h->type == bfd_link_hash_common)
3294 {
3295 int skip = 0;
3296
f88dc410 3297 switch (info->common_skip_ar_symbols)
116c20d2
NC		 3298 {
3299 case bfd_link_common_skip_text:
3300 skip = (type == (N_TEXT | N_EXT));
3301 break;
3302 case bfd_link_common_skip_data:
3303 skip = (type == (N_DATA | N_EXT));
3304 break;
3305 default:
3306 case bfd_link_common_skip_all:
3307 skip = 1;
3308 break;
3309 }
3310
3311 if (skip)
3312 continue;
3313 }
3314
0e144ba7
AM		 3315 if (!(*info->callbacks
3316 ->add_archive_element) (info, abfd, name, subsbfd))
116c20d2
NC		 3317 return FALSE;
3318 *pneeded = TRUE;
3319 return TRUE;
3320 }
3321
3322 if (type == (N_UNDF | N_EXT))
3323 {
3324 bfd_vma value;
3325
3326 value = GET_WORD (abfd, p->e_value);
3327 if (value != 0)
3328 {
3329 /* This symbol is common in the object from the archive
3330 file. */
3331 if (h->type == bfd_link_hash_undefined)
3332 {
3333 bfd *symbfd;
3334 unsigned int power;
3335
3336 symbfd = h->u.undef.abfd;
3337 if (symbfd == NULL)
3338 {
3339 /* This symbol was created as undefined from
3340 outside BFD. We assume that we should link
3341 in the object file. This is done for the -u
3342 option in the linker. */
0e144ba7
AM		 3343 if (!(*info->callbacks
3344 ->add_archive_element) (info, abfd, name, subsbfd))
116c20d2
NC		 3345 return FALSE;
3346 *pneeded = TRUE;
3347 return TRUE;
3348 }
3349 /* Turn the current link symbol into a common
3350 symbol. It is already on the undefs list. */
3351 h->type = bfd_link_hash_common;
a50b1753 3352 h->u.c.p = (struct bfd_link_hash_common_entry *)
0e144ba7
AM		 3353 bfd_hash_allocate (&info->hash->table,
3354 sizeof (struct bfd_link_hash_common_entry));
116c20d2
NC		 3355 if (h->u.c.p == NULL)
3356 return FALSE;
3357
3358 h->u.c.size = value;
3359
3360 /* FIXME: This isn't quite right. The maximum
3361 alignment of a common symbol should be set by the
3362 architecture of the output file, not of the input
3363 file. */
3364 power = bfd_log2 (value);
3365 if (power > bfd_get_arch_info (abfd)->section_align_power)
3366 power = bfd_get_arch_info (abfd)->section_align_power;
3367 h->u.c.p->alignment_power = power;
3368
3369 h->u.c.p->section = bfd_make_section_old_way (symbfd,
3370 "COMMON");
3371 }
3372 else
3373 {
3374 /* Adjust the size of the common symbol if
3375 necessary. */
3376 if (value > h->u.c.size)
3377 h->u.c.size = value;
3378 }
3379 }
3380 }
3381
3382 if (type == N_WEAKA
3383 || type == N_WEAKT
3384 || type == N_WEAKD
3385 || type == N_WEAKB)
3386 {
3387 /* This symbol is weak but defined. We must pull it in if
3388 the current link symbol is undefined, but we don't want
3389 it if the current link symbol is common. */
3390 if (h->type == bfd_link_hash_undefined)
3391 {
0e144ba7
AM		 3392 if (!(*info->callbacks
3393 ->add_archive_element) (info, abfd, name, subsbfd))
116c20d2
NC		 3394 return FALSE;
3395 *pneeded = TRUE;
3396 return TRUE;
3397 }
3398 }
3399 }
3400
3401 /* We do not need this object file. */
3402 return TRUE;
3403}
3404/* Check a single archive element to see if we need to include it in
3405 the link. *PNEEDED is set according to whether this element is
3406 needed in the link or not. This is called from
3407 _bfd_generic_link_add_archive_symbols. */
3408
3409static bfd_boolean
3410aout_link_check_archive_element (bfd *abfd,
3411 struct bfd_link_info *info,
13e570f8
AM		 3412 struct bfd_link_hash_entry *h ATTRIBUTE_UNUSED,
3413 const char *name ATTRIBUTE_UNUSED,
116c20d2
NC		 3414 bfd_boolean *pneeded)
3415{
0e144ba7
AM		 3416 bfd *oldbfd;
3417 bfd_boolean needed;
5d3236ee 3418
0e144ba7 3419 if (!aout_get_external_symbols (abfd))
116c20d2
NC		 3420 return FALSE;
3421
0e144ba7
AM		 3422 oldbfd = abfd;
3423 if (!aout_link_check_ar_symbols (abfd, info, pneeded, &abfd))
116c20d2
NC		 3424 return FALSE;
3425
0e144ba7
AM		 3426 needed = *pneeded;
3427 if (needed)
116c20d2 3428 {
5d3236ee
DK		 3429 /* Potentially, the add_archive_element hook may have set a
3430 substitute BFD for us. */
0e144ba7
AM		 3431 if (abfd != oldbfd)
3432 {
3433 if (!info->keep_memory
3434 && !aout_link_free_symbols (oldbfd))
3435 return FALSE;
3436 if (!aout_get_external_symbols (abfd))
3437 return FALSE;
3438 }
3439 if (!aout_link_add_symbols (abfd, info))
116c20d2
NC		 3440 return FALSE;
3441 }
3442
0e144ba7 3443 if (!info->keep_memory || !needed)
116c20d2 3444 {
0e144ba7 3445 if (!aout_link_free_symbols (abfd))
116c20d2
NC		 3446 return FALSE;
3447 }
3448
3449 return TRUE;
3450}
3451
3452/* Given an a.out BFD, add symbols to the global hash table as
3453 appropriate. */
3454
3455bfd_boolean
3456NAME (aout, link_add_symbols) (bfd *abfd, struct bfd_link_info *info)
3457{
3458 switch (bfd_get_format (abfd))
3459 {
3460 case bfd_object:
3461 return aout_link_add_object_symbols (abfd, info);
3462 case bfd_archive:
3463 return _bfd_generic_link_add_archive_symbols
3464 (abfd, info, aout_link_check_archive_element);
3465 default:
3466 bfd_set_error (bfd_error_wrong_format);
3467 return FALSE;
3468 }
3469}
3470\f
3471/* A hash table used for header files with N_BINCL entries. */
3472
3473struct aout_link_includes_table
3474{
3475 struct bfd_hash_table root;
3476};
3477
3478/* A linked list of totals that we have found for a particular header
3479 file. */
3480
3481struct aout_link_includes_totals
3482{
3483 struct aout_link_includes_totals *next;
3484 bfd_vma total;
3485};
3486
3487/* An entry in the header file hash table. */
3488
3489struct aout_link_includes_entry
3490{
3491 struct bfd_hash_entry root;
3492 /* List of totals we have found for this file. */
3493 struct aout_link_includes_totals *totals;
3494};
3495
3496/* Look up an entry in an the header file hash table. */
3497
3498#define aout_link_includes_lookup(table, string, create, copy) \
3499 ((struct aout_link_includes_entry *) \
3500 bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
3501
3502/* During the final link step we need to pass around a bunch of
3503 information, so we do it in an instance of this structure. */
3504
3505struct aout_final_link_info
3506{
3507 /* General link information. */
3508 struct bfd_link_info *info;
3509 /* Output bfd. */
252b5132
RH		 3510 bfd *output_bfd;
3511 /* Reloc file positions. */
3512 file_ptr treloff, dreloff;
3513 /* File position of symbols. */
3514 file_ptr symoff;
3515 /* String table. */
3516 struct bfd_strtab_hash *strtab;
3517 /* Header file hash table. */
3518 struct aout_link_includes_table includes;
3519 /* A buffer large enough to hold the contents of any section. */
3520 bfd_byte *contents;
3521 /* A buffer large enough to hold the relocs of any section. */
116c20d2 3522 void * relocs;
252b5132
RH		 3523 /* A buffer large enough to hold the symbol map of any input BFD. */
3524 int *symbol_map;
3525 /* A buffer large enough to hold output symbols of any input BFD. */
3526 struct external_nlist *output_syms;
3527};
3528
252b5132
RH		 3529/* The function to create a new entry in the header file hash table. */
3530
3531static struct bfd_hash_entry *
116c20d2
NC		 3532aout_link_includes_newfunc (struct bfd_hash_entry *entry,
3533 struct bfd_hash_table *table,
3534 const char *string)
252b5132
RH		 3535{
3536 struct aout_link_includes_entry *ret =
3537 (struct aout_link_includes_entry *) entry;
3538
3539 /* Allocate the structure if it has not already been allocated by a
3540 subclass. */
116c20d2 3541 if (ret == NULL)
a50b1753
NC		 3542 ret = (struct aout_link_includes_entry *)
3543 bfd_hash_allocate (table, sizeof (* ret));
116c20d2
NC		 3544 if (ret == NULL)
3545 return NULL;
252b5132
RH		 3546
3547 /* Call the allocation method of the superclass. */
3548 ret = ((struct aout_link_includes_entry *)
3549 bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string));
3550 if (ret)
3551 {
3552 /* Set local fields. */
3553 ret->totals = NULL;
3554 }
3555
3556 return (struct bfd_hash_entry *) ret;
3557}
3558
116c20d2
NC		 3559/* Write out a symbol that was not associated with an a.out input
3560 object. */
252b5132 3561
116c20d2 3562static bfd_boolean
7686d77d 3563aout_link_write_other_symbol (struct bfd_hash_entry *bh, void *data)
252b5132 3564{
7686d77d 3565 struct aout_link_hash_entry *h = (struct aout_link_hash_entry *) bh;
57402f1e 3566 struct aout_final_link_info *flaginfo = (struct aout_final_link_info *) data;
116c20d2
NC		 3567 bfd *output_bfd;
3568 int type;
3569 bfd_vma val;
3570 struct external_nlist outsym;
3571 bfd_size_type indx;
3572 bfd_size_type amt;
252b5132 3573
116c20d2
NC		 3574 if (h->root.type == bfd_link_hash_warning)
3575 {
3576 h = (struct aout_link_hash_entry *) h->root.u.i.link;
3577 if (h->root.type == bfd_link_hash_new)
3578 return TRUE;
3579 }
252b5132 3580
57402f1e 3581 output_bfd = flaginfo->output_bfd;
252b5132 3582
116c20d2 3583 if (aout_backend_info (output_bfd)->write_dynamic_symbol != NULL)
252b5132 3584 {
116c20d2 3585 if (! ((*aout_backend_info (output_bfd)->write_dynamic_symbol)
57402f1e 3586 (output_bfd, flaginfo->info, h)))
252b5132 3587 {
116c20d2
NC		 3588 /* FIXME: No way to handle errors. */
3589 abort ();
252b5132 3590 }
116c20d2 3591 }
252b5132 3592
116c20d2
NC		 3593 if (h->written)
3594 return TRUE;
252b5132 3595
116c20d2 3596 h->written = TRUE;
252b5132 3597
116c20d2
NC		 3598 /* An indx of -2 means the symbol must be written. */
3599 if (h->indx != -2
57402f1e
NC		 3600 && (flaginfo->info->strip == strip_all
3601 || (flaginfo->info->strip == strip_some
3602 && bfd_hash_lookup (flaginfo->info->keep_hash, h->root.root.string,
116c20d2
NC		 3603 FALSE, FALSE) == NULL)))
3604 return TRUE;
252b5132 3605
116c20d2 3606 switch (h->root.type)
252b5132 3607 {
116c20d2
NC		 3608 default:
3609 case bfd_link_hash_warning:
3610 abort ();
3611 /* Avoid variable not initialized warnings. */
3612 return TRUE;
3613 case bfd_link_hash_new:
3614 /* This can happen for set symbols when sets are not being
3615 built. */
3616 return TRUE;
3617 case bfd_link_hash_undefined:
3618 type = N_UNDF | N_EXT;
3619 val = 0;
3620 break;
3621 case bfd_link_hash_defined:
3622 case bfd_link_hash_defweak:
3623 {
3624 asection *sec;
252b5132 3625
116c20d2
NC		 3626 sec = h->root.u.def.section->output_section;
3627 BFD_ASSERT (bfd_is_abs_section (sec)
3628 || sec->owner == output_bfd);
3629 if (sec == obj_textsec (output_bfd))
3630 type = h->root.type == bfd_link_hash_defined ? N_TEXT : N_WEAKT;
3631 else if (sec == obj_datasec (output_bfd))
3632 type = h->root.type == bfd_link_hash_defined ? N_DATA : N_WEAKD;
3633 else if (sec == obj_bsssec (output_bfd))
3634 type = h->root.type == bfd_link_hash_defined ? N_BSS : N_WEAKB;
3635 else
3636 type = h->root.type == bfd_link_hash_defined ? N_ABS : N_WEAKA;
3637 type |= N_EXT;
3638 val = (h->root.u.def.value
3639 + sec->vma
3640 + h->root.u.def.section->output_offset);
3641 }
3642 break;
3643 case bfd_link_hash_common:
3644 type = N_UNDF | N_EXT;
3645 val = h->root.u.c.size;
3646 break;
3647 case bfd_link_hash_undefweak:
3648 type = N_WEAKU;
3649 val = 0;
c38eb2a6 3650 break;
116c20d2
NC		 3651 case bfd_link_hash_indirect:
3652 /* We ignore these symbols, since the indirected symbol is
3653 already in the hash table. */
3654 return TRUE;
3655 }
252b5132 3656
116c20d2
NC		 3657 H_PUT_8 (output_bfd, type, outsym.e_type);
3658 H_PUT_8 (output_bfd, 0, outsym.e_other);
3659 H_PUT_16 (output_bfd, 0, outsym.e_desc);
57402f1e 3660 indx = add_to_stringtab (output_bfd, flaginfo->strtab, h->root.root.string,
116c20d2
NC		 3661 FALSE);
3662 if (indx == - (bfd_size_type) 1)
3663 /* FIXME: No way to handle errors. */
3664 abort ();
252b5132 3665
116c20d2
NC		 3666 PUT_WORD (output_bfd, indx, outsym.e_strx);
3667 PUT_WORD (output_bfd, val, outsym.e_value);
252b5132 3668
116c20d2 3669 amt = EXTERNAL_NLIST_SIZE;
57402f1e 3670 if (bfd_seek (output_bfd, flaginfo->symoff, SEEK_SET) != 0
116c20d2
NC		 3671 || bfd_bwrite ((void *) &outsym, amt, output_bfd) != amt)
3672 /* FIXME: No way to handle errors. */
3673 abort ();
252b5132 3674
57402f1e 3675 flaginfo->symoff += EXTERNAL_NLIST_SIZE;
116c20d2
NC		 3676 h->indx = obj_aout_external_sym_count (output_bfd);
3677 ++obj_aout_external_sym_count (output_bfd);
252b5132 3678
116c20d2
NC		 3679 return TRUE;
3680}
252b5132 3681
116c20d2 3682/* Handle a link order which is supposed to generate a reloc. */
252b5132 3683
116c20d2 3684static bfd_boolean
57402f1e 3685aout_link_reloc_link_order (struct aout_final_link_info *flaginfo,
116c20d2
NC		 3686 asection *o,
3687 struct bfd_link_order *p)
3688{
3689 struct bfd_link_order_reloc *pr;
3690 int r_index;
3691 int r_extern;
3692 reloc_howto_type *howto;
3693 file_ptr *reloff_ptr = NULL;
3694 struct reloc_std_external srel;
3695 struct reloc_ext_external erel;
3696 void * rel_ptr;
3697 bfd_size_type amt;
252b5132 3698
116c20d2 3699 pr = p->u.reloc.p;
252b5132 3700
116c20d2
NC		 3701 if (p->type == bfd_section_reloc_link_order)
3702 {
3703 r_extern = 0;
3704 if (bfd_is_abs_section (pr->u.section))
3705 r_index = N_ABS | N_EXT;
3706 else
3707 {
57402f1e 3708 BFD_ASSERT (pr->u.section->owner == flaginfo->output_bfd);
116c20d2
NC		 3709 r_index = pr->u.section->target_index;
3710 }
3711 }
3712 else
3713 {
3714 struct aout_link_hash_entry *h;
252b5132 3715
116c20d2
NC		 3716 BFD_ASSERT (p->type == bfd_symbol_reloc_link_order);
3717 r_extern = 1;
3718 h = ((struct aout_link_hash_entry *)
57402f1e 3719 bfd_wrapped_link_hash_lookup (flaginfo->output_bfd, flaginfo->info,
116c20d2
NC		 3720 pr->u.name, FALSE, FALSE, TRUE));
3721 if (h != NULL
3722 && h->indx >= 0)
3723 r_index = h->indx;
3724 else if (h != NULL)
3725 {
3726 /* We decided to strip this symbol, but it turns out that we
3727 can't. Note that we lose the other and desc information
3728 here. I don't think that will ever matter for a global
3729 symbol. */
3730 h->indx = -2;
3731 h->written = FALSE;
57402f1e 3732 if (!aout_link_write_other_symbol (&h->root.root, flaginfo))
116c20d2
NC		 3733 return FALSE;
3734 r_index = h->indx;
3735 }
3736 else
3737 {
1a72702b
AM		 3738 (*flaginfo->info->callbacks->unattached_reloc)
3739 (flaginfo->info, pr->u.name, NULL, NULL, (bfd_vma) 0);
116c20d2
NC		 3740 r_index = 0;
3741 }
3742 }
252b5132 3743
57402f1e 3744 howto = bfd_reloc_type_lookup (flaginfo->output_bfd, pr->reloc);
116c20d2 3745 if (howto == 0)
252b5132 3746 {
116c20d2
NC		 3747 bfd_set_error (bfd_error_bad_value);
3748 return FALSE;
252b5132
RH		 3749 }
3750
57402f1e
NC		 3751 if (o == obj_textsec (flaginfo->output_bfd))
3752 reloff_ptr = &flaginfo->treloff;
3753 else if (o == obj_datasec (flaginfo->output_bfd))
3754 reloff_ptr = &flaginfo->dreloff;
116c20d2
NC		 3755 else
3756 abort ();
3757
57402f1e 3758 if (obj_reloc_entry_size (flaginfo->output_bfd) == RELOC_STD_SIZE)
252b5132 3759 {
116c20d2 3760#ifdef MY_put_reloc
57402f1e 3761 MY_put_reloc (flaginfo->output_bfd, r_extern, r_index, p->offset, howto,
116c20d2
NC		 3762 &srel);
3763#else
3764 {
3765 int r_pcrel;
3766 int r_baserel;
3767 int r_jmptable;
3768 int r_relative;
3769 int r_length;
252b5132 3770
116c20d2
NC		 3771 r_pcrel = (int) howto->pc_relative;
3772 r_baserel = (howto->type & 8) != 0;
3773 r_jmptable = (howto->type & 16) != 0;
3774 r_relative = (howto->type & 32) != 0;
3775 r_length = howto->size;
252b5132 3776
57402f1e
NC		 3777 PUT_WORD (flaginfo->output_bfd, p->offset, srel.r_address);
3778 if (bfd_header_big_endian (flaginfo->output_bfd))
116c20d2
NC		 3779 {
3780 srel.r_index[0] = r_index >> 16;
3781 srel.r_index[1] = r_index >> 8;
3782 srel.r_index[2] = r_index;
3783 srel.r_type[0] =
3784 ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0)
3785 | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0)
3786 | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0)
3787 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0)
3788 | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0)
3789 | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG));
3790 }
3791 else
3792 {
3793 srel.r_index[2] = r_index >> 16;
3794 srel.r_index[1] = r_index >> 8;
3795 srel.r_index[0] = r_index;
3796 srel.r_type[0] =
3797 ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0)
3798 | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0)
3799 | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0)
3800 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0)
3801 | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0)
3802 | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE));
3803 }
3804 }
3805#endif
3806 rel_ptr = (void *) &srel;
252b5132 3807
116c20d2
NC		 3808 /* We have to write the addend into the object file, since
3809 standard a.out relocs are in place. It would be more
3810 reliable if we had the current contents of the file here,
3811 rather than assuming zeroes, but we can't read the file since
3812 it was opened using bfd_openw. */
3813 if (pr->addend != 0)
252b5132 3814 {
116c20d2
NC		 3815 bfd_size_type size;
3816 bfd_reloc_status_type r;
3817 bfd_byte *buf;
3818 bfd_boolean ok;
3819
3820 size = bfd_get_reloc_size (howto);
a50b1753 3821 buf = (bfd_byte *) bfd_zmalloc (size);
6346d5ca 3822 if (buf == NULL && size != 0)
116c20d2 3823 return FALSE;
57402f1e 3824 r = MY_relocate_contents (howto, flaginfo->output_bfd,
116c20d2
NC		 3825 (bfd_vma) pr->addend, buf);
3826 switch (r)
252b5132 3827 {
116c20d2
NC		 3828 case bfd_reloc_ok:
3829 break;
3830 default:
3831 case bfd_reloc_outofrange:
3832 abort ();
3833 case bfd_reloc_overflow:
1a72702b
AM		 3834 (*flaginfo->info->callbacks->reloc_overflow)
3835 (flaginfo->info, NULL,
3836 (p->type == bfd_section_reloc_link_order
3837 ? bfd_section_name (flaginfo->output_bfd,
3838 pr->u.section)
3839 : pr->u.name),
3840 howto->name, pr->addend, NULL, NULL, (bfd_vma) 0);
116c20d2 3841 break;
252b5132 3842 }
57402f1e 3843 ok = bfd_set_section_contents (flaginfo->output_bfd, o, (void *) buf,
116c20d2
NC		 3844 (file_ptr) p->offset, size);
3845 free (buf);
3846 if (! ok)
3847 return FALSE;
252b5132
RH		 3848 }
3849 }
116c20d2 3850 else
252b5132 3851 {
116c20d2 3852#ifdef MY_put_ext_reloc
57402f1e 3853 MY_put_ext_reloc (flaginfo->output_bfd, r_extern, r_index, p->offset,
116c20d2
NC		 3854 howto, &erel, pr->addend);
3855#else
57402f1e 3856 PUT_WORD (flaginfo->output_bfd, p->offset, erel.r_address);
252b5132 3857
57402f1e 3858 if (bfd_header_big_endian (flaginfo->output_bfd))
116c20d2
NC		 3859 {
3860 erel.r_index[0] = r_index >> 16;
3861 erel.r_index[1] = r_index >> 8;
3862 erel.r_index[2] = r_index;
3863 erel.r_type[0] =
3864 ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0)
3865 | (howto->type << RELOC_EXT_BITS_TYPE_SH_BIG));
3866 }
3867 else
3868 {
3869 erel.r_index[2] = r_index >> 16;
3870 erel.r_index[1] = r_index >> 8;
3871 erel.r_index[0] = r_index;
3872 erel.r_type[0] =
3873 (r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0)
3874 | (howto->type << RELOC_EXT_BITS_TYPE_SH_LITTLE);
3875 }
252b5132 3876
57402f1e 3877 PUT_WORD (flaginfo->output_bfd, (bfd_vma) pr->addend, erel.r_addend);
116c20d2 3878#endif /* MY_put_ext_reloc */
252b5132 3879
116c20d2 3880 rel_ptr = (void *) &erel;
252b5132 3881 }
252b5132 3882
57402f1e
NC		 3883 amt = obj_reloc_entry_size (flaginfo->output_bfd);
3884 if (bfd_seek (flaginfo->output_bfd, *reloff_ptr, SEEK_SET) != 0
3885 || bfd_bwrite (rel_ptr, amt, flaginfo->output_bfd) != amt)
116c20d2 3886 return FALSE;
252b5132 3887
57402f1e 3888 *reloff_ptr += obj_reloc_entry_size (flaginfo->output_bfd);
252b5132 3889
116c20d2
NC		 3890 /* Assert that the relocs have not run into the symbols, and that n
3891 the text relocs have not run into the data relocs. */
57402f1e
NC		 3892 BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (flaginfo->output_bfd)
3893 && (reloff_ptr != &flaginfo->treloff
116c20d2 3894 || (*reloff_ptr
57402f1e 3895 <= obj_datasec (flaginfo->output_bfd)->rel_filepos)));
116c20d2
NC		 3896
3897 return TRUE;
252b5132
RH		 3898}
3899
116c20d2 3900/* Get the section corresponding to a reloc index. */
252b5132 3901
116c20d2
NC		 3902static INLINE asection *
3903aout_reloc_index_to_section (bfd *abfd, int indx)
252b5132 3904{
116c20d2 3905 switch (indx & N_TYPE)
252b5132 3906 {
116c20d2
NC		 3907 case N_TEXT: return obj_textsec (abfd);
3908 case N_DATA: return obj_datasec (abfd);
3909 case N_BSS: return obj_bsssec (abfd);
3910 case N_ABS:
3911 case N_UNDF: return bfd_abs_section_ptr;
3912 default: abort ();
252b5132 3913 }
116c20d2 3914 return NULL;
252b5132
RH		 3915}
3916
116c20d2 3917/* Relocate an a.out section using standard a.out relocs. */
252b5132 3918
b34976b6 3919static bfd_boolean
57402f1e 3920aout_link_input_section_std (struct aout_final_link_info *flaginfo,
116c20d2
NC		 3921 bfd *input_bfd,
3922 asection *input_section,
3923 struct reloc_std_external *relocs,
3924 bfd_size_type rel_size,
3925 bfd_byte *contents)
252b5132 3926{
116c20d2
NC		 3927 bfd_boolean (*check_dynamic_reloc)
3928 (struct bfd_link_info *, bfd *, asection *,
3929 struct aout_link_hash_entry *, void *, bfd_byte *, bfd_boolean *,
3930 bfd_vma *);
252b5132 3931 bfd *output_bfd;
116c20d2
NC		 3932 bfd_boolean relocatable;
3933 struct external_nlist *syms;
252b5132 3934 char *strings;
116c20d2 3935 struct aout_link_hash_entry **sym_hashes;
252b5132 3936 int *symbol_map;
116c20d2
NC		 3937 bfd_size_type reloc_count;
3938 struct reloc_std_external *rel;
3939 struct reloc_std_external *rel_end;
252b5132 3940
57402f1e 3941 output_bfd = flaginfo->output_bfd;
116c20d2 3942 check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc;
252b5132 3943
116c20d2
NC		 3944 BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE);
3945 BFD_ASSERT (input_bfd->xvec->header_byteorder
3946 == output_bfd->xvec->header_byteorder);
252b5132 3947
0e1862bb 3948 relocatable = bfd_link_relocatable (flaginfo->info);
116c20d2
NC		 3949 syms = obj_aout_external_syms (input_bfd);
3950 strings = obj_aout_external_strings (input_bfd);
3951 sym_hashes = obj_aout_sym_hashes (input_bfd);
57402f1e 3952 symbol_map = flaginfo->symbol_map;
116c20d2
NC		 3953
3954 reloc_count = rel_size / RELOC_STD_SIZE;
3955 rel = relocs;
3956 rel_end = rel + reloc_count;
3957 for (; rel < rel_end; rel++)
252b5132 3958 {
116c20d2
NC		 3959 bfd_vma r_addr;
3960 int r_index;
3961 int r_extern;
3962 int r_pcrel;
3963 int r_baserel = 0;
3964 reloc_howto_type *howto;
3965 struct aout_link_hash_entry *h = NULL;
3966 bfd_vma relocation;
3967 bfd_reloc_status_type r;
252b5132 3968
116c20d2 3969 r_addr = GET_SWORD (input_bfd, rel->r_address);
252b5132 3970
116c20d2
NC		 3971#ifdef MY_reloc_howto
3972 howto = MY_reloc_howto (input_bfd, rel, r_index, r_extern, r_pcrel);
3973#else
3974 {
3975 int r_jmptable;
3976 int r_relative;
3977 int r_length;
3978 unsigned int howto_idx;
252b5132 3979
116c20d2
NC		 3980 if (bfd_header_big_endian (input_bfd))
3981 {
3982 r_index = (((unsigned int) rel->r_index[0] << 16)
3983 | ((unsigned int) rel->r_index[1] << 8)
3984 | rel->r_index[2]);
3985 r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
3986 r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
3987 r_baserel = (0 != (rel->r_type[0] & RELOC_STD_BITS_BASEREL_BIG));
3988 r_jmptable= (0 != (rel->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG));
3989 r_relative= (0 != (rel->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG));
3990 r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_BIG)
3991 >> RELOC_STD_BITS_LENGTH_SH_BIG);
3992 }
3993 else
3994 {
3995 r_index = (((unsigned int) rel->r_index[2] << 16)
3996 | ((unsigned int) rel->r_index[1] << 8)
3997 | rel->r_index[0]);
3998 r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
3999 r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
4000 r_baserel = (0 != (rel->r_type[0]
4001 & RELOC_STD_BITS_BASEREL_LITTLE));
4002 r_jmptable= (0 != (rel->r_type[0]
4003 & RELOC_STD_BITS_JMPTABLE_LITTLE));
4004 r_relative= (0 != (rel->r_type[0]
4005 & RELOC_STD_BITS_RELATIVE_LITTLE));
4006 r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE)
4007 >> RELOC_STD_BITS_LENGTH_SH_LITTLE);
4008 }
252b5132 4009
116c20d2
NC		 4010 howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel
4011 + 16 * r_jmptable + 32 * r_relative);
ad756e3f
AM		 4012 if (howto_idx < TABLE_SIZE (howto_table_std))
4013 howto = howto_table_std + howto_idx;
4014 else
4015 howto = NULL;
116c20d2
NC		 4016 }
4017#endif
252b5132 4018
ad756e3f
AM		 4019 if (howto == NULL)
4020 {
57402f1e 4021 (*flaginfo->info->callbacks->einfo)
ad756e3f
AM		 4022 (_("%P: %B: unexpected relocation type\n"), input_bfd);
4023 bfd_set_error (bfd_error_bad_value);
4024 return FALSE;
4025 }
4026
116c20d2 4027 if (relocatable)
252b5132 4028 {
116c20d2
NC		 4029 /* We are generating a relocatable output file, and must
4030 modify the reloc accordingly. */
4031 if (r_extern)
252b5132 4032 {
116c20d2
NC		 4033 /* If we know the symbol this relocation is against,
4034 convert it into a relocation against a section. This
4035 is what the native linker does. */
4036 h = sym_hashes[r_index];
4037 if (h != NULL
4038 && (h->root.type == bfd_link_hash_defined
4039 || h->root.type == bfd_link_hash_defweak))
252b5132 4040 {
252b5132
RH		 4041 asection *output_section;
4042
116c20d2
NC		 4043 /* Change the r_extern value. */
4044 if (bfd_header_big_endian (output_bfd))
4045 rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_BIG;
4046 else
4047 rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_LITTLE;
252b5132 4048
116c20d2
NC		 4049 /* Compute a new r_index. */
4050 output_section = h->root.u.def.section->output_section;
252b5132 4051 if (output_section == obj_textsec (output_bfd))
116c20d2 4052 r_index = N_TEXT;
252b5132 4053 else if (output_section == obj_datasec (output_bfd))
116c20d2 4054 r_index = N_DATA;
252b5132 4055 else if (output_section == obj_bsssec (output_bfd))
116c20d2 4056 r_index = N_BSS;
252b5132 4057 else
116c20d2 4058 r_index = N_ABS;
252b5132 4059
116c20d2
NC		 4060 /* Add the symbol value and the section VMA to the
4061 addend stored in the contents. */
4062 relocation = (h->root.u.def.value
4063 + output_section->vma
4064 + h->root.u.def.section->output_offset);
252b5132 4065 }
116c20d2 4066 else
252b5132 4067 {
116c20d2
NC		 4068 /* We must change r_index according to the symbol
4069 map. */
4070 r_index = symbol_map[r_index];
252b5132 4071
116c20d2 4072 if (r_index == -1)
252b5132 4073 {
116c20d2 4074 if (h != NULL)
252b5132 4075 {
116c20d2
NC		 4076 /* We decided to strip this symbol, but it
4077 turns out that we can't. Note that we
4078 lose the other and desc information here.
4079 I don't think that will ever matter for a
4080 global symbol. */
4081 if (h->indx < 0)
252b5132 4082 {
116c20d2
NC		 4083 h->indx = -2;
4084 h->written = FALSE;
7686d77d 4085 if (!aout_link_write_other_symbol (&h->root.root,
57402f1e 4086 flaginfo))
116c20d2 4087 return FALSE;
252b5132 4088 }
116c20d2
NC		 4089 r_index = h->indx;
4090 }
4091 else
4092 {
4093 const char *name;
4094
4095 name = strings + GET_WORD (input_bfd,
4096 syms[r_index].e_strx);
1a72702b
AM		 4097 (*flaginfo->info->callbacks->unattached_reloc)
4098 (flaginfo->info, name,
4099 input_bfd, input_section, r_addr);
116c20d2 4100 r_index = 0;
252b5132
RH		 4101 }
4102 }
116c20d2
NC		 4103
4104 relocation = 0;
252b5132
RH		 4105 }
4106
116c20d2
NC		 4107 /* Write out the new r_index value. */
4108 if (bfd_header_big_endian (output_bfd))
252b5132 4109 {
116c20d2
NC		 4110 rel->r_index[0] = r_index >> 16;
4111 rel->r_index[1] = r_index >> 8;
4112 rel->r_index[2] = r_index;
252b5132
RH		 4113 }
4114 else
4115 {
116c20d2
NC		 4116 rel->r_index[2] = r_index >> 16;
4117 rel->r_index[1] = r_index >> 8;
4118 rel->r_index[0] = r_index;
252b5132
RH		 4119 }
4120 }
252b5132 4121 else
116c20d2
NC		 4122 {
4123 asection *section;
252b5132 4124
116c20d2
NC		 4125 /* This is a relocation against a section. We must
4126 adjust by the amount that the section moved. */
4127 section = aout_reloc_index_to_section (input_bfd, r_index);
4128 relocation = (section->output_section->vma
4129 + section->output_offset
4130 - section->vma);
4131 }
252b5132 4132
116c20d2
NC		 4133 /* Change the address of the relocation. */
4134 PUT_WORD (output_bfd,
4135 r_addr + input_section->output_offset,
4136 rel->r_address);
252b5132 4137
116c20d2
NC		 4138 /* Adjust a PC relative relocation by removing the reference
4139 to the original address in the section and including the
4140 reference to the new address. */
4141 if (r_pcrel)
4142 relocation -= (input_section->output_section->vma
4143 + input_section->output_offset
4144 - input_section->vma);
e92d460e 4145
116c20d2
NC		 4146#ifdef MY_relocatable_reloc
4147 MY_relocatable_reloc (howto, output_bfd, rel, relocation, r_addr);
4148#endif
252b5132 4149
116c20d2
NC		 4150 if (relocation == 0)
4151 r = bfd_reloc_ok;
4152 else
4153 r = MY_relocate_contents (howto,
4154 input_bfd, relocation,
4155 contents + r_addr);
252b5132 4156 }
116c20d2
NC		 4157 else
4158 {
4159 bfd_boolean hundef;
252b5132 4160
116c20d2
NC		 4161 /* We are generating an executable, and must do a full
4162 relocation. */
4163 hundef = FALSE;
252b5132 4164
116c20d2
NC		 4165 if (r_extern)
4166 {
4167 h = sym_hashes[r_index];
252b5132 4168
116c20d2
NC		 4169 if (h != NULL
4170 && (h->root.type == bfd_link_hash_defined
4171 || h->root.type == bfd_link_hash_defweak))
4172 {
4173 relocation = (h->root.u.def.value
4174 + h->root.u.def.section->output_section->vma
4175 + h->root.u.def.section->output_offset);
4176 }
4177 else if (h != NULL
4178 && h->root.type == bfd_link_hash_undefweak)
4179 relocation = 0;
4180 else
4181 {
4182 hundef = TRUE;
4183 relocation = 0;
4184 }
4185 }
4186 else
4187 {
4188 asection *section;
252b5132 4189
116c20d2
NC		 4190 section = aout_reloc_index_to_section (input_bfd, r_index);
4191 relocation = (section->output_section->vma
4192 + section->output_offset
4193 - section->vma);
4194 if (r_pcrel)
4195 relocation += input_section->vma;
4196 }
252b5132 4197
116c20d2
NC		 4198 if (check_dynamic_reloc != NULL)
4199 {
4200 bfd_boolean skip;
252b5132 4201
116c20d2 4202 if (! ((*check_dynamic_reloc)
57402f1e 4203 (flaginfo->info, input_bfd, input_section, h,
116c20d2
NC		 4204 (void *) rel, contents, &skip, &relocation)))
4205 return FALSE;
4206 if (skip)
4207 continue;
4208 }
252b5132 4209
116c20d2
NC		 4210 /* Now warn if a global symbol is undefined. We could not
4211 do this earlier, because check_dynamic_reloc might want
4212 to skip this reloc. */
0e1862bb 4213 if (hundef && ! bfd_link_pic (flaginfo->info) && ! r_baserel)
116c20d2
NC		 4214 {
4215 const char *name;
252b5132 4216
116c20d2
NC		 4217 if (h != NULL)
4218 name = h->root.root.string;
4219 else
4220 name = strings + GET_WORD (input_bfd, syms[r_index].e_strx);
1a72702b
AM		 4221 (*flaginfo->info->callbacks->undefined_symbol)
4222 (flaginfo->info, name, input_bfd, input_section, r_addr, TRUE);
116c20d2 4223 }
252b5132 4224
116c20d2
NC		 4225 r = MY_final_link_relocate (howto,
4226 input_bfd, input_section,
4227 contents, r_addr, relocation,
4228 (bfd_vma) 0);
252b5132 4229 }
252b5132 4230
116c20d2
NC		 4231 if (r != bfd_reloc_ok)
4232 {
4233 switch (r)
4234 {
4235 default:
4236 case bfd_reloc_outofrange:
4237 abort ();
4238 case bfd_reloc_overflow:
4239 {
4240 const char *name;
252b5132 4241
116c20d2
NC		 4242 if (h != NULL)
4243 name = NULL;
4244 else if (r_extern)
4245 name = strings + GET_WORD (input_bfd,
4246 syms[r_index].e_strx);
4247 else
4248 {
4249 asection *s;
252b5132 4250
116c20d2
NC		 4251 s = aout_reloc_index_to_section (input_bfd, r_index);
4252 name = bfd_section_name (input_bfd, s);
4253 }
1a72702b
AM		 4254 (*flaginfo->info->callbacks->reloc_overflow)
4255 (flaginfo->info, (h ? &h->root : NULL), name, howto->name,
4256 (bfd_vma) 0, input_bfd, input_section, r_addr);
116c20d2
NC		 4257 }
4258 break;
4259 }
4260 }
252b5132
RH		 4261 }
4262
b34976b6 4263 return TRUE;
252b5132
RH		 4264}
4265
116c20d2 4266/* Relocate an a.out section using extended a.out relocs. */
252b5132 4267
b34976b6 4268static bfd_boolean
57402f1e 4269aout_link_input_section_ext (struct aout_final_link_info *flaginfo,
116c20d2
NC		 4270 bfd *input_bfd,
4271 asection *input_section,
4272 struct reloc_ext_external *relocs,
4273 bfd_size_type rel_size,
4274 bfd_byte *contents)
252b5132 4275{
b34976b6 4276 bfd_boolean (*check_dynamic_reloc)
116c20d2
NC		 4277 (struct bfd_link_info *, bfd *, asection *,
4278 struct aout_link_hash_entry *, void *, bfd_byte *, bfd_boolean *,
4279 bfd_vma *);
252b5132 4280 bfd *output_bfd;
1049f94e 4281 bfd_boolean relocatable;
252b5132
RH		 4282 struct external_nlist *syms;
4283 char *strings;
4284 struct aout_link_hash_entry **sym_hashes;
4285 int *symbol_map;
4286 bfd_size_type reloc_count;
116c20d2
NC		 4287 struct reloc_ext_external *rel;
4288 struct reloc_ext_external *rel_end;
252b5132 4289
57402f1e 4290 output_bfd = flaginfo->output_bfd;
252b5132
RH		 4291 check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc;
4292
116c20d2 4293 BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_EXT_SIZE);
252b5132
RH		 4294 BFD_ASSERT (input_bfd->xvec->header_byteorder
4295 == output_bfd->xvec->header_byteorder);
4296
0e1862bb 4297 relocatable = bfd_link_relocatable (flaginfo->info);
252b5132
RH		 4298 syms = obj_aout_external_syms (input_bfd);
4299 strings = obj_aout_external_strings (input_bfd);
4300 sym_hashes = obj_aout_sym_hashes (input_bfd);
57402f1e 4301 symbol_map = flaginfo->symbol_map;
252b5132 4302
116c20d2 4303 reloc_count = rel_size / RELOC_EXT_SIZE;
252b5132
RH		 4304 rel = relocs;
4305 rel_end = rel + reloc_count;
4306 for (; rel < rel_end; rel++)
4307 {
4308 bfd_vma r_addr;
4309 int r_index;
4310 int r_extern;
116c20d2
NC		 4311 unsigned int r_type;
4312 bfd_vma r_addend;
252b5132 4313 struct aout_link_hash_entry *h = NULL;
116c20d2 4314 asection *r_section = NULL;
252b5132 4315 bfd_vma relocation;
252b5132
RH		 4316
4317 r_addr = GET_SWORD (input_bfd, rel->r_address);
4318
116c20d2
NC		 4319 if (bfd_header_big_endian (input_bfd))
4320 {
4321 r_index = (((unsigned int) rel->r_index[0] << 16)
4322 | ((unsigned int) rel->r_index[1] << 8)
4323 | rel->r_index[2]);
4324 r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG));
4325 r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
4326 >> RELOC_EXT_BITS_TYPE_SH_BIG);
4327 }
4328 else
4329 {
4330 r_index = (((unsigned int) rel->r_index[2] << 16)
4331 | ((unsigned int) rel->r_index[1] << 8)
4332 | rel->r_index[0]);
4333 r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE));
4334 r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
4335 >> RELOC_EXT_BITS_TYPE_SH_LITTLE);
4336 }
252b5132 4337
116c20d2 4338 r_addend = GET_SWORD (input_bfd, rel->r_addend);
252b5132 4339
ad756e3f
AM		 4340 if (r_type >= TABLE_SIZE (howto_table_ext))
4341 {
57402f1e 4342 (*flaginfo->info->callbacks->einfo)
ad756e3f
AM		 4343 (_("%P: %B: unexpected relocation type\n"), input_bfd);
4344 bfd_set_error (bfd_error_bad_value);
4345 return FALSE;
4346 }
252b5132 4347
1049f94e 4348 if (relocatable)
252b5132 4349 {
1049f94e 4350 /* We are generating a relocatable output file, and must
252b5132 4351 modify the reloc accordingly. */
116c20d2
NC		 4352 if (r_extern
4353 || r_type == (unsigned int) RELOC_BASE10
4354 || r_type == (unsigned int) RELOC_BASE13
4355 || r_type == (unsigned int) RELOC_BASE22)
252b5132
RH		 4356 {
4357 /* If we know the symbol this relocation is against,
4358 convert it into a relocation against a section. This
4359 is what the native linker does. */
116c20d2
NC		 4360 if (r_type == (unsigned int) RELOC_BASE10
4361 || r_type == (unsigned int) RELOC_BASE13
4362 || r_type == (unsigned int) RELOC_BASE22)
4363 h = NULL;
4364 else
4365 h = sym_hashes[r_index];
4366 if (h != NULL
252b5132
RH		 4367 && (h->root.type == bfd_link_hash_defined
4368 || h->root.type == bfd_link_hash_defweak))
4369 {
4370 asection *output_section;
4371
4372 /* Change the r_extern value. */
4373 if (bfd_header_big_endian (output_bfd))
116c20d2 4374 rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_BIG;
252b5132 4375 else
116c20d2 4376 rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_LITTLE;
252b5132
RH		 4377
4378 /* Compute a new r_index. */
4379 output_section = h->root.u.def.section->output_section;
4380 if (output_section == obj_textsec (output_bfd))
4381 r_index = N_TEXT;
4382 else if (output_section == obj_datasec (output_bfd))
4383 r_index = N_DATA;
4384 else if (output_section == obj_bsssec (output_bfd))
4385 r_index = N_BSS;
4386 else
4387 r_index = N_ABS;
4388
4389 /* Add the symbol value and the section VMA to the
116c20d2 4390 addend. */
252b5132
RH		 4391 relocation = (h->root.u.def.value
4392 + output_section->vma
4393 + h->root.u.def.section->output_offset);
116c20d2
NC		 4394
4395 /* Now RELOCATION is the VMA of the final
4396 destination. If this is a PC relative reloc,
4397 then ADDEND is the negative of the source VMA.
4398 We want to set ADDEND to the difference between
4399 the destination VMA and the source VMA, which
4400 means we must adjust RELOCATION by the change in
4401 the source VMA. This is done below. */
252b5132
RH		 4402 }
4403 else
4404 {
4405 /* We must change r_index according to the symbol
4406 map. */
4407 r_index = symbol_map[r_index];
4408
4409 if (r_index == -1)
4410 {
4411 if (h != NULL)
4412 {
4413 /* We decided to strip this symbol, but it
4414 turns out that we can't. Note that we
4415 lose the other and desc information here.
4416 I don't think that will ever matter for a
4417 global symbol. */
4418 if (h->indx < 0)
4419 {
4420 h->indx = -2;
b34976b6 4421 h->written = FALSE;
7686d77d 4422 if (!aout_link_write_other_symbol (&h->root.root,
57402f1e 4423 flaginfo))
b34976b6 4424 return FALSE;
252b5132
RH		 4425 }
4426 r_index = h->indx;
4427 }
4428 else
4429 {
4430 const char *name;
4431
4432 name = strings + GET_WORD (input_bfd,
4433 syms[r_index].e_strx);
1a72702b
AM		 4434 (*flaginfo->info->callbacks->unattached_reloc)
4435 (flaginfo->info, name,
4436 input_bfd, input_section, r_addr);
252b5132
RH		 4437 r_index = 0;
4438 }
4439 }
4440
4441 relocation = 0;
116c20d2
NC		 4442
4443 /* If this is a PC relative reloc, then the addend
4444 is the negative of the source VMA. We must
4445 adjust it by the change in the source VMA. This
4446 is done below. */
252b5132
RH		 4447 }
4448
4449 /* Write out the new r_index value. */
4450 if (bfd_header_big_endian (output_bfd))
4451 {
4452 rel->r_index[0] = r_index >> 16;
4453 rel->r_index[1] = r_index >> 8;
4454 rel->r_index[2] = r_index;
4455 }
4456 else
4457 {
4458 rel->r_index[2] = r_index >> 16;
4459 rel->r_index[1] = r_index >> 8;
4460 rel->r_index[0] = r_index;
4461 }
4462 }
4463 else
4464 {
252b5132
RH		 4465 /* This is a relocation against a section. We must
4466 adjust by the amount that the section moved. */
116c20d2
NC		 4467 r_section = aout_reloc_index_to_section (input_bfd, r_index);
4468 relocation = (r_section->output_section->vma
4469 + r_section->output_offset
4470 - r_section->vma);
252b5132 4471
116c20d2
NC		 4472 /* If this is a PC relative reloc, then the addend is
4473 the difference in VMA between the destination and the
4474 source. We have just adjusted for the change in VMA
4475 of the destination, so we must also adjust by the
4476 change in VMA of the source. This is done below. */
4477 }
252b5132 4478
116c20d2
NC		 4479 /* As described above, we must always adjust a PC relative
4480 reloc by the change in VMA of the source. However, if
4481 pcrel_offset is set, then the addend does not include the
4482 location within the section, in which case we don't need
4483 to adjust anything. */
4484 if (howto_table_ext[r_type].pc_relative
4485 && ! howto_table_ext[r_type].pcrel_offset)
252b5132
RH		 4486 relocation -= (input_section->output_section->vma
4487 + input_section->output_offset
4488 - input_section->vma);
4489
116c20d2
NC		 4490 /* Change the addend if necessary. */
4491 if (relocation != 0)
4492 PUT_WORD (output_bfd, r_addend + relocation, rel->r_addend);
252b5132 4493
116c20d2
NC		 4494 /* Change the address of the relocation. */
4495 PUT_WORD (output_bfd,
4496 r_addr + input_section->output_offset,
4497 rel->r_address);
252b5132
RH		 4498 }
4499 else
4500 {
b34976b6 4501 bfd_boolean hundef;
116c20d2 4502 bfd_reloc_status_type r;
252b5132
RH		 4503
4504 /* We are generating an executable, and must do a full
4505 relocation. */
b34976b6 4506 hundef = FALSE;
252b5132
RH		 4507
4508 if (r_extern)
4509 {
4510 h = sym_hashes[r_index];
4511
116c20d2 4512 if (h != NULL
252b5132
RH		 4513 && (h->root.type == bfd_link_hash_defined
4514 || h->root.type == bfd_link_hash_defweak))
4515 {
4516 relocation = (h->root.u.def.value
4517 + h->root.u.def.section->output_section->vma
4518 + h->root.u.def.section->output_offset);
4519 }
116c20d2 4520 else if (h != NULL
252b5132
RH		 4521 && h->root.type == bfd_link_hash_undefweak)
4522 relocation = 0;
4523 else
4524 {
b34976b6 4525 hundef = TRUE;
252b5132
RH		 4526 relocation = 0;
4527 }
4528 }
116c20d2
NC		 4529 else if (r_type == (unsigned int) RELOC_BASE10
4530 || r_type == (unsigned int) RELOC_BASE13
4531 || r_type == (unsigned int) RELOC_BASE22)
4532 {
4533 struct external_nlist *sym;
4534 int type;
4535
4536 /* For base relative relocs, r_index is always an index
4537 into the symbol table, even if r_extern is 0. */
4538 sym = syms + r_index;
4539 type = H_GET_8 (input_bfd, sym->e_type);
4540 if ((type & N_TYPE) == N_TEXT
4541 || type == N_WEAKT)
4542 r_section = obj_textsec (input_bfd);
4543 else if ((type & N_TYPE) == N_DATA
4544 || type == N_WEAKD)
4545 r_section = obj_datasec (input_bfd);
4546 else if ((type & N_TYPE) == N_BSS
4547 || type == N_WEAKB)
4548 r_section = obj_bsssec (input_bfd);
4549 else if ((type & N_TYPE) == N_ABS
4550 || type == N_WEAKA)
4551 r_section = bfd_abs_section_ptr;
4552 else
4553 abort ();
4554 relocation = (r_section->output_section->vma
4555 + r_section->output_offset
4556 + (GET_WORD (input_bfd, sym->e_value)
4557 - r_section->vma));
4558 }
252b5132
RH		 4559 else
4560 {
116c20d2 4561 r_section = aout_reloc_index_to_section (input_bfd, r_index);
252b5132 4562
116c20d2
NC		 4563 /* If this is a PC relative reloc, then R_ADDEND is the
4564 difference between the two vmas, or
4565 old_dest_sec + old_dest_off - (old_src_sec + old_src_off)
4566 where
4567 old_dest_sec == section->vma
4568 and
4569 old_src_sec == input_section->vma
4570 and
4571 old_src_off == r_addr
4572
4573 _bfd_final_link_relocate expects RELOCATION +
4574 R_ADDEND to be the VMA of the destination minus
4575 r_addr (the minus r_addr is because this relocation
4576 is not pcrel_offset, which is a bit confusing and
4577 should, perhaps, be changed), or
4578 new_dest_sec
4579 where
4580 new_dest_sec == output_section->vma + output_offset
4581 We arrange for this to happen by setting RELOCATION to
4582 new_dest_sec + old_src_sec - old_dest_sec
4583
4584 If this is not a PC relative reloc, then R_ADDEND is
4585 simply the VMA of the destination, so we set
4586 RELOCATION to the change in the destination VMA, or
4587 new_dest_sec - old_dest_sec
4588 */
4589 relocation = (r_section->output_section->vma
4590 + r_section->output_offset
4591 - r_section->vma);
4592 if (howto_table_ext[r_type].pc_relative)
252b5132
RH		 4593 relocation += input_section->vma;
4594 }
4595
4596 if (check_dynamic_reloc != NULL)
4597 {
b34976b6 4598 bfd_boolean skip;
252b5132
RH		 4599
4600 if (! ((*check_dynamic_reloc)
57402f1e 4601 (flaginfo->info, input_bfd, input_section, h,
116c20d2 4602 (void *) rel, contents, &skip, &relocation)))
b34976b6 4603 return FALSE;
252b5132
RH		 4604 if (skip)
4605 continue;
4606 }
4607
4608 /* Now warn if a global symbol is undefined. We could not
4609 do this earlier, because check_dynamic_reloc might want
4610 to skip this reloc. */
116c20d2 4611 if (hundef
0e1862bb 4612 && ! bfd_link_pic (flaginfo->info)
116c20d2
NC		 4613 && r_type != (unsigned int) RELOC_BASE10
4614 && r_type != (unsigned int) RELOC_BASE13
4615 && r_type != (unsigned int) RELOC_BASE22)
252b5132
RH		 4616 {
4617 const char *name;
4618
4619 if (h != NULL)
4620 name = h->root.root.string;
4621 else
4622 name = strings + GET_WORD (input_bfd, syms[r_index].e_strx);
1a72702b
AM		 4623 (*flaginfo->info->callbacks->undefined_symbol)
4624 (flaginfo->info, name, input_bfd, input_section, r_addr, TRUE);
252b5132
RH		 4625 }
4626
116c20d2
NC		 4627 if (r_type != (unsigned int) RELOC_SPARC_REV32)
4628 r = MY_final_link_relocate (howto_table_ext + r_type,
4629 input_bfd, input_section,
4630 contents, r_addr, relocation,
4631 r_addend);
4632 else
252b5132 4633 {
116c20d2 4634 bfd_vma x;
252b5132 4635
116c20d2
NC		 4636 x = bfd_get_32 (input_bfd, contents + r_addr);
4637 x = x + relocation + r_addend;
4638 bfd_putl32 (/*input_bfd,*/ x, contents + r_addr);
4639 r = bfd_reloc_ok;
4640 }
4641
4642 if (r != bfd_reloc_ok)
4643 {
4644 switch (r)
4645 {
4646 default:
4647 case bfd_reloc_outofrange:
4648 abort ();
4649 case bfd_reloc_overflow:
252b5132 4650 {
116c20d2 4651 const char *name;
252b5132 4652
116c20d2
NC		 4653 if (h != NULL)
4654 name = NULL;
4655 else if (r_extern
4656 || r_type == (unsigned int) RELOC_BASE10
4657 || r_type == (unsigned int) RELOC_BASE13
4658 || r_type == (unsigned int) RELOC_BASE22)
4659 name = strings + GET_WORD (input_bfd,
4660 syms[r_index].e_strx);
4661 else
4662 {
4663 asection *s;
4664
4665 s = aout_reloc_index_to_section (input_bfd, r_index);
4666 name = bfd_section_name (input_bfd, s);
4667 }
1a72702b
AM		 4668 (*flaginfo->info->callbacks->reloc_overflow)
4669 (flaginfo->info, (h ? &h->root : NULL), name,
4670 howto_table_ext[r_type].name,
4671 r_addend, input_bfd, input_section, r_addr);
252b5132 4672 }
116c20d2
NC		 4673 break;
4674 }
252b5132
RH		 4675 }
4676 }
4677 }
4678
b34976b6 4679 return TRUE;
252b5132
RH		 4680}
4681
116c20d2
NC		 4682/* Link an a.out section into the output file. */
4683
4684static bfd_boolean
57402f1e 4685aout_link_input_section (struct aout_final_link_info *flaginfo,
116c20d2
NC		 4686 bfd *input_bfd,
4687 asection *input_section,
4688 file_ptr *reloff_ptr,
4689 bfd_size_type rel_size)
4690{
4691 bfd_size_type input_size;
4692 void * relocs;
4693
4694 /* Get the section contents. */
4695 input_size = input_section->size;
4696 if (! bfd_get_section_contents (input_bfd, input_section,
57402f1e 4697 (void *) flaginfo->contents,
116c20d2
NC		 4698 (file_ptr) 0, input_size))
4699 return FALSE;
4700
4701 /* Read in the relocs if we haven't already done it. */
4702 if (aout_section_data (input_section) != NULL
4703 && aout_section_data (input_section)->relocs != NULL)
4704 relocs = aout_section_data (input_section)->relocs;
4705 else
4706 {
57402f1e 4707 relocs = flaginfo->relocs;
116c20d2
NC		 4708 if (rel_size > 0)
4709 {
4710 if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0
4711 || bfd_bread (relocs, rel_size, input_bfd) != rel_size)
4712 return FALSE;
4713 }
4714 }
4715
4716 /* Relocate the section contents. */
4717 if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE)
4718 {
57402f1e 4719 if (! aout_link_input_section_std (flaginfo, input_bfd, input_section,
116c20d2 4720 (struct reloc_std_external *) relocs,
57402f1e 4721 rel_size, flaginfo->contents))
116c20d2
NC		 4722 return FALSE;
4723 }
4724 else
4725 {
57402f1e 4726 if (! aout_link_input_section_ext (flaginfo, input_bfd, input_section,
116c20d2 4727 (struct reloc_ext_external *) relocs,
57402f1e 4728 rel_size, flaginfo->contents))
116c20d2
NC		 4729 return FALSE;
4730 }
4731
4732 /* Write out the section contents. */
57402f1e 4733 if (! bfd_set_section_contents (flaginfo->output_bfd,
116c20d2 4734 input_section->output_section,
57402f1e 4735 (void *) flaginfo->contents,
116c20d2
NC		 4736 (file_ptr) input_section->output_offset,
4737 input_size))
4738 return FALSE;
4739
4740 /* If we are producing relocatable output, the relocs were
4741 modified, and we now write them out. */
0e1862bb 4742 if (bfd_link_relocatable (flaginfo->info) && rel_size > 0)
116c20d2 4743 {
57402f1e 4744 if (bfd_seek (flaginfo->output_bfd, *reloff_ptr, SEEK_SET) != 0)
116c20d2 4745 return FALSE;
57402f1e 4746 if (bfd_bwrite (relocs, rel_size, flaginfo->output_bfd) != rel_size)
116c20d2
NC		 4747 return FALSE;
4748 *reloff_ptr += rel_size;
4749
4750 /* Assert that the relocs have not run into the symbols, and
4751 that if these are the text relocs they have not run into the
4752 data relocs. */
57402f1e
NC		 4753 BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (flaginfo->output_bfd)
4754 && (reloff_ptr != &flaginfo->treloff
116c20d2 4755 || (*reloff_ptr
57402f1e 4756 <= obj_datasec (flaginfo->output_bfd)->rel_filepos)));
116c20d2
NC		 4757 }
4758
4759 return TRUE;
4760}
4761
4762/* Adjust and write out the symbols for an a.out file. Set the new
4763 symbol indices into a symbol_map. */
252b5132 4764
b34976b6 4765static bfd_boolean
57402f1e 4766aout_link_write_symbols (struct aout_final_link_info *flaginfo, bfd *input_bfd)
252b5132 4767{
252b5132 4768 bfd *output_bfd;
116c20d2 4769 bfd_size_type sym_count;
252b5132 4770 char *strings;
116c20d2
NC		 4771 enum bfd_link_strip strip;
4772 enum bfd_link_discard discard;
4773 struct external_nlist *outsym;
4774 bfd_size_type strtab_index;
4775 struct external_nlist *sym;
4776 struct external_nlist *sym_end;
4777 struct aout_link_hash_entry **sym_hash;
252b5132 4778 int *symbol_map;
116c20d2
NC		 4779 bfd_boolean pass;
4780 bfd_boolean skip_next;
252b5132 4781
57402f1e 4782 output_bfd = flaginfo->output_bfd;
116c20d2
NC		 4783 sym_count = obj_aout_external_sym_count (input_bfd);
4784 strings = obj_aout_external_strings (input_bfd);
57402f1e
NC		 4785 strip = flaginfo->info->strip;
4786 discard = flaginfo->info->discard;
4787 outsym = flaginfo->output_syms;
252b5132 4788
116c20d2
NC		 4789 /* First write out a symbol for this object file, unless we are
4790 discarding such symbols. */
4791 if (strip != strip_all
4792 && (strip != strip_some
57402f1e 4793 || bfd_hash_lookup (flaginfo->info->keep_hash, input_bfd->filename,
116c20d2
NC		 4794 FALSE, FALSE) != NULL)
4795 && discard != discard_all)
4796 {
4797 H_PUT_8 (output_bfd, N_TEXT, outsym->e_type);
4798 H_PUT_8 (output_bfd, 0, outsym->e_other);
4799 H_PUT_16 (output_bfd, 0, outsym->e_desc);
57402f1e 4800 strtab_index = add_to_stringtab (output_bfd, flaginfo->strtab,
116c20d2
NC		 4801 input_bfd->filename, FALSE);
4802 if (strtab_index == (bfd_size_type) -1)
4803 return FALSE;
4804 PUT_WORD (output_bfd, strtab_index, outsym->e_strx);
4805 PUT_WORD (output_bfd,
4806 (bfd_get_section_vma (output_bfd,
4807 obj_textsec (input_bfd)->output_section)
4808 + obj_textsec (input_bfd)->output_offset),
4809 outsym->e_value);
4810 ++obj_aout_external_sym_count (output_bfd);
4811 ++outsym;
4812 }
252b5132 4813
116c20d2
NC		 4814 pass = FALSE;
4815 skip_next = FALSE;
4816 sym = obj_aout_external_syms (input_bfd);
4817 sym_end = sym + sym_count;
4818 sym_hash = obj_aout_sym_hashes (input_bfd);
57402f1e 4819 symbol_map = flaginfo->symbol_map;
116c20d2
NC		 4820 memset (symbol_map, 0, (size_t) sym_count * sizeof *symbol_map);
4821 for (; sym < sym_end; sym++, sym_hash++, symbol_map++)
252b5132 4822 {
116c20d2
NC		 4823 const char *name;
4824 int type;
4825 struct aout_link_hash_entry *h;
4826 bfd_boolean skip;
4827 asection *symsec;
4828 bfd_vma val = 0;
4829 bfd_boolean copy;
252b5132 4830
116c20d2
NC		 4831 /* We set *symbol_map to 0 above for all symbols. If it has
4832 already been set to -1 for this symbol, it means that we are
4833 discarding it because it appears in a duplicate header file.
4834 See the N_BINCL code below. */
4835 if (*symbol_map == -1)
4836 continue;
252b5132 4837
116c20d2
NC		 4838 /* Initialize *symbol_map to -1, which means that the symbol was
4839 not copied into the output file. We will change it later if
4840 we do copy the symbol over. */
4841 *symbol_map = -1;
4842
4843 type = H_GET_8 (input_bfd, sym->e_type);
4844 name = strings + GET_WORD (input_bfd, sym->e_strx);
4845
4846 h = NULL;
4847
4848 if (pass)
252b5132 4849 {
116c20d2
NC		 4850 /* Pass this symbol through. It is the target of an
4851 indirect or warning symbol. */
4852 val = GET_WORD (input_bfd, sym->e_value);
4853 pass = FALSE;
252b5132 4854 }
116c20d2 4855 else if (skip_next)
252b5132 4856 {
116c20d2
NC		 4857 /* Skip this symbol, which is the target of an indirect
4858 symbol that we have changed to no longer be an indirect
4859 symbol. */
4860 skip_next = FALSE;
4861 continue;
252b5132 4862 }
116c20d2
NC		 4863 else
4864 {
4865 struct aout_link_hash_entry *hresolve;
252b5132 4866
116c20d2
NC		 4867 /* We have saved the hash table entry for this symbol, if
4868 there is one. Note that we could just look it up again
4869 in the hash table, provided we first check that it is an
4870 external symbol. */
4871 h = *sym_hash;
252b5132 4872
116c20d2
NC		 4873 /* Use the name from the hash table, in case the symbol was
4874 wrapped. */
4875 if (h != NULL
4876 && h->root.type != bfd_link_hash_warning)
4877 name = h->root.root.string;
252b5132 4878
116c20d2
NC		 4879 /* If this is an indirect or warning symbol, then change
4880 hresolve to the base symbol. We also change *sym_hash so
4881 that the relocation routines relocate against the real
4882 symbol. */
4883 hresolve = h;
4884 if (h != (struct aout_link_hash_entry *) NULL
4885 && (h->root.type == bfd_link_hash_indirect
4886 || h->root.type == bfd_link_hash_warning))
252b5132 4887 {
116c20d2
NC		 4888 hresolve = (struct aout_link_hash_entry *) h->root.u.i.link;
4889 while (hresolve->root.type == bfd_link_hash_indirect
4890 || hresolve->root.type == bfd_link_hash_warning)
4891 hresolve = ((struct aout_link_hash_entry *)
4892 hresolve->root.u.i.link);
4893 *sym_hash = hresolve;
4894 }
4895
4896 /* If the symbol has already been written out, skip it. */
4897 if (h != NULL
4898 && h->written)
4899 {
4900 if ((type & N_TYPE) == N_INDR
4901 || type == N_WARNING)
4902 skip_next = TRUE;
4903 *symbol_map = h->indx;
4904 continue;
4905 }
4906
4907 /* See if we are stripping this symbol. */
4908 skip = FALSE;
4909 switch (strip)
4910 {
4911 case strip_none:
4912 break;
4913 case strip_debugger:
4914 if ((type & N_STAB) != 0)
4915 skip = TRUE;
4916 break;
4917 case strip_some:
57402f1e 4918 if (bfd_hash_lookup (flaginfo->info->keep_hash, name, FALSE, FALSE)
116c20d2
NC		 4919 == NULL)
4920 skip = TRUE;
4921 break;
4922 case strip_all:
4923 skip = TRUE;
4924 break;
4925 }
4926 if (skip)
4927 {
4928 if (h != NULL)
4929 h->written = TRUE;
4930 continue;
4931 }
4932
4933 /* Get the value of the symbol. */
4934 if ((type & N_TYPE) == N_TEXT
4935 || type == N_WEAKT)
4936 symsec = obj_textsec (input_bfd);
4937 else if ((type & N_TYPE) == N_DATA
4938 || type == N_WEAKD)
4939 symsec = obj_datasec (input_bfd);
4940 else if ((type & N_TYPE) == N_BSS
4941 || type == N_WEAKB)
4942 symsec = obj_bsssec (input_bfd);
4943 else if ((type & N_TYPE) == N_ABS
4944 || type == N_WEAKA)
4945 symsec = bfd_abs_section_ptr;
4946 else if (((type & N_TYPE) == N_INDR
4947 && (hresolve == NULL
4948 || (hresolve->root.type != bfd_link_hash_defined
4949 && hresolve->root.type != bfd_link_hash_defweak
4950 && hresolve->root.type != bfd_link_hash_common)))
4951 || type == N_WARNING)
4952 {
4953 /* Pass the next symbol through unchanged. The
4954 condition above for indirect symbols is so that if
4955 the indirect symbol was defined, we output it with
4956 the correct definition so the debugger will
4957 understand it. */
4958 pass = TRUE;
4959 val = GET_WORD (input_bfd, sym->e_value);
4960 symsec = NULL;
4961 }
4962 else if ((type & N_STAB) != 0)
4963 {
4964 val = GET_WORD (input_bfd, sym->e_value);
4965 symsec = NULL;
4966 }
4967 else
4968 {
4969 /* If we get here with an indirect symbol, it means that
4970 we are outputting it with a real definition. In such
4971 a case we do not want to output the next symbol,
4972 which is the target of the indirection. */
4973 if ((type & N_TYPE) == N_INDR)
4974 skip_next = TRUE;
4975
4976 symsec = NULL;
4977
4978 /* We need to get the value from the hash table. We use
4979 hresolve so that if we have defined an indirect
4980 symbol we output the final definition. */
4981 if (h == NULL)
4982 {
4983 switch (type & N_TYPE)
4984 {
4985 case N_SETT:
4986 symsec = obj_textsec (input_bfd);
4987 break;
4988 case N_SETD:
4989 symsec = obj_datasec (input_bfd);
4990 break;
4991 case N_SETB:
4992 symsec = obj_bsssec (input_bfd);
4993 break;
4994 case N_SETA:
4995 symsec = bfd_abs_section_ptr;
4996 break;
4997 default:
4998 val = 0;
4999 break;
5000 }
5001 }
5002 else if (hresolve->root.type == bfd_link_hash_defined
5003 || hresolve->root.type == bfd_link_hash_defweak)
252b5132 5004 {
116c20d2 5005 asection *input_section;
252b5132
RH		 5006 asection *output_section;
5007
116c20d2
NC		 5008 /* This case usually means a common symbol which was
5009 turned into a defined symbol. */
5010 input_section = hresolve->root.u.def.section;
5011 output_section = input_section->output_section;
5012 BFD_ASSERT (bfd_is_abs_section (output_section)
5013 || output_section->owner == output_bfd);
5014 val = (hresolve->root.u.def.value
5015 + bfd_get_section_vma (output_bfd, output_section)
5016 + input_section->output_offset);
5017
5018 /* Get the correct type based on the section. If
5019 this is a constructed set, force it to be
5020 globally visible. */
5021 if (type == N_SETT
5022 || type == N_SETD
5023 || type == N_SETB
5024 || type == N_SETA)
5025 type |= N_EXT;
5026
5027 type &=~ N_TYPE;
252b5132 5028
252b5132 5029 if (output_section == obj_textsec (output_bfd))
116c20d2
NC		 5030 type |= (hresolve->root.type == bfd_link_hash_defined
5031 ? N_TEXT
5032 : N_WEAKT);
252b5132 5033 else if (output_section == obj_datasec (output_bfd))
116c20d2
NC		 5034 type |= (hresolve->root.type == bfd_link_hash_defined
5035 ? N_DATA
5036 : N_WEAKD);
252b5132 5037 else if (output_section == obj_bsssec (output_bfd))
116c20d2
NC		 5038 type |= (hresolve->root.type == bfd_link_hash_defined
5039 ? N_BSS
5040 : N_WEAKB);
252b5132 5041 else
116c20d2
NC		 5042 type |= (hresolve->root.type == bfd_link_hash_defined
5043 ? N_ABS
5044 : N_WEAKA);
5045 }
5046 else if (hresolve->root.type == bfd_link_hash_common)
5047 val = hresolve->root.u.c.size;
5048 else if (hresolve->root.type == bfd_link_hash_undefweak)
5049 {
5050 val = 0;
5051 type = N_WEAKU;
252b5132
RH		 5052 }
5053 else
116c20d2
NC		 5054 val = 0;
5055 }
5056 if (symsec != NULL)
5057 val = (symsec->output_section->vma
5058 + symsec->output_offset
5059 + (GET_WORD (input_bfd, sym->e_value)
5060 - symsec->vma));
5061
5062 /* If this is a global symbol set the written flag, and if
5063 it is a local symbol see if we should discard it. */
5064 if (h != NULL)
5065 {
5066 h->written = TRUE;
5067 h->indx = obj_aout_external_sym_count (output_bfd);
5068 }
5069 else if ((type & N_TYPE) != N_SETT
5070 && (type & N_TYPE) != N_SETD
5071 && (type & N_TYPE) != N_SETB
5072 && (type & N_TYPE) != N_SETA)
5073 {
5074 switch (discard)
252b5132 5075 {
116c20d2
NC		 5076 case discard_none:
5077 case discard_sec_merge:
5078 break;
5079 case discard_l:
5080 if ((type & N_STAB) == 0
5081 && bfd_is_local_label_name (input_bfd, name))
5082 skip = TRUE;
5083 break;
5084 case discard_all:
5085 skip = TRUE;
5086 break;
5087 }
5088 if (skip)
5089 {
5090 pass = FALSE;
5091 continue;
5092 }
5093 }
252b5132 5094
116c20d2
NC		 5095 /* An N_BINCL symbol indicates the start of the stabs
5096 entries for a header file. We need to scan ahead to the
5097 next N_EINCL symbol, ignoring nesting, adding up all the
5098 characters in the symbol names, not including the file
5099 numbers in types (the first number after an open
5100 parenthesis). */
5101 if (type == (int) N_BINCL)
5102 {
5103 struct external_nlist *incl_sym;
5104 int nest;
5105 struct aout_link_includes_entry *incl_entry;
5106 struct aout_link_includes_totals *t;
5107
5108 val = 0;
5109 nest = 0;
5110 for (incl_sym = sym + 1; incl_sym < sym_end; incl_sym++)
5111 {
5112 int incl_type;
5113
5114 incl_type = H_GET_8 (input_bfd, incl_sym->e_type);
5115 if (incl_type == (int) N_EINCL)
252b5132 5116 {
116c20d2
NC		 5117 if (nest == 0)
5118 break;
5119 --nest;
5120 }
5121 else if (incl_type == (int) N_BINCL)
5122 ++nest;
5123 else if (nest == 0)
5124 {
5125 const char *s;
5126
5127 s = strings + GET_WORD (input_bfd, incl_sym->e_strx);
5128 for (; *s != '\0'; s++)
252b5132 5129 {
116c20d2
NC		 5130 val += *s;
5131 if (*s == '(')
252b5132 5132 {
116c20d2
NC		 5133 /* Skip the file number. */
5134 ++s;
5135 while (ISDIGIT (*s))
5136 ++s;
5137 --s;
252b5132 5138 }
252b5132 5139 }
116c20d2
NC		 5140 }
5141 }
252b5132 5142
116c20d2
NC		 5143 /* If we have already included a header file with the
5144 same value, then replace this one with an N_EXCL
5145 symbol. */
57402f1e
NC		 5146 copy = (bfd_boolean) (! flaginfo->info->keep_memory);
5147 incl_entry = aout_link_includes_lookup (&flaginfo->includes,
116c20d2
NC		 5148 name, TRUE, copy);
5149 if (incl_entry == NULL)
5150 return FALSE;
5151 for (t = incl_entry->totals; t != NULL; t = t->next)
5152 if (t->total == val)
5153 break;
5154 if (t == NULL)
5155 {
5156 /* This is the first time we have seen this header
5157 file with this set of stabs strings. */
a50b1753 5158 t = (struct aout_link_includes_totals *)
57402f1e 5159 bfd_hash_allocate (&flaginfo->includes.root,
116c20d2
NC		 5160 sizeof *t);
5161 if (t == NULL)
5162 return FALSE;
5163 t->total = val;
5164 t->next = incl_entry->totals;
5165 incl_entry->totals = t;
5166 }
5167 else
5168 {
5169 int *incl_map;
5170
5171 /* This is a duplicate header file. We must change
5172 it to be an N_EXCL entry, and mark all the
5173 included symbols to prevent outputting them. */
5174 type = (int) N_EXCL;
5175
5176 nest = 0;
5177 for (incl_sym = sym + 1, incl_map = symbol_map + 1;
5178 incl_sym < sym_end;
5179 incl_sym++, incl_map++)
5180 {
5181 int incl_type;
5182
5183 incl_type = H_GET_8 (input_bfd, incl_sym->e_type);
5184 if (incl_type == (int) N_EINCL)
5185 {
5186 if (nest == 0)
5187 {
5188 *incl_map = -1;
5189 break;
5190 }
5191 --nest;
252b5132 5192 }
116c20d2
NC		 5193 else if (incl_type == (int) N_BINCL)
5194 ++nest;
5195 else if (nest == 0)
5196 *incl_map = -1;
252b5132 5197 }
252b5132
RH		 5198 }
5199 }
116c20d2
NC		 5200 }
5201
5202 /* Copy this symbol into the list of symbols we are going to
5203 write out. */
5204 H_PUT_8 (output_bfd, type, outsym->e_type);
5205 H_PUT_8 (output_bfd, H_GET_8 (input_bfd, sym->e_other), outsym->e_other);
5206 H_PUT_16 (output_bfd, H_GET_16 (input_bfd, sym->e_desc), outsym->e_desc);
5207 copy = FALSE;
57402f1e 5208 if (! flaginfo->info->keep_memory)
116c20d2
NC		 5209 {
5210 /* name points into a string table which we are going to
5211 free. If there is a hash table entry, use that string.
5212 Otherwise, copy name into memory. */
5213 if (h != NULL)
5214 name = h->root.root.string;
252b5132 5215 else
116c20d2
NC		 5216 copy = TRUE;
5217 }
57402f1e 5218 strtab_index = add_to_stringtab (output_bfd, flaginfo->strtab,
116c20d2
NC		 5219 name, copy);
5220 if (strtab_index == (bfd_size_type) -1)
5221 return FALSE;
5222 PUT_WORD (output_bfd, strtab_index, outsym->e_strx);
5223 PUT_WORD (output_bfd, val, outsym->e_value);
5224 *symbol_map = obj_aout_external_sym_count (output_bfd);
5225 ++obj_aout_external_sym_count (output_bfd);
5226 ++outsym;
5227 }
252b5132 5228
116c20d2 5229 /* Write out the output symbols we have just constructed. */
57402f1e 5230 if (outsym > flaginfo->output_syms)
116c20d2
NC		 5231 {
5232 bfd_size_type outsym_size;
252b5132 5233
57402f1e 5234 if (bfd_seek (output_bfd, flaginfo->symoff, SEEK_SET) != 0)
116c20d2 5235 return FALSE;
57402f1e 5236 outsym_size = outsym - flaginfo->output_syms;
116c20d2 5237 outsym_size *= EXTERNAL_NLIST_SIZE;
57402f1e 5238 if (bfd_bwrite ((void *) flaginfo->output_syms, outsym_size, output_bfd)
116c20d2
NC		 5239 != outsym_size)
5240 return FALSE;
57402f1e 5241 flaginfo->symoff += outsym_size;
116c20d2 5242 }
252b5132 5243
116c20d2
NC		 5244 return TRUE;
5245}
252b5132 5246
116c20d2 5247/* Link an a.out input BFD into the output file. */
252b5132 5248
116c20d2 5249static bfd_boolean
57402f1e 5250aout_link_input_bfd (struct aout_final_link_info *flaginfo, bfd *input_bfd)
116c20d2 5251{
116c20d2 5252 BFD_ASSERT (bfd_get_format (input_bfd) == bfd_object);
252b5132 5253
116c20d2
NC		 5254 /* If this is a dynamic object, it may need special handling. */
5255 if ((input_bfd->flags & DYNAMIC) != 0
5256 && aout_backend_info (input_bfd)->link_dynamic_object != NULL)
5257 return ((*aout_backend_info (input_bfd)->link_dynamic_object)
57402f1e 5258 (flaginfo->info, input_bfd));
252b5132 5259
116c20d2 5260 /* Get the symbols. We probably have them already, unless
57402f1e 5261 flaginfo->info->keep_memory is FALSE. */
116c20d2
NC		 5262 if (! aout_get_external_symbols (input_bfd))
5263 return FALSE;
252b5132 5264
116c20d2 5265 /* Write out the symbols and get a map of the new indices. The map
57402f1e
NC		 5266 is placed into flaginfo->symbol_map. */
5267 if (! aout_link_write_symbols (flaginfo, input_bfd))
116c20d2 5268 return FALSE;
252b5132 5269
116c20d2
NC		 5270 /* Relocate and write out the sections. These functions use the
5271 symbol map created by aout_link_write_symbols. The linker_mark
5272 field will be set if these sections are to be included in the
5273 link, which will normally be the case. */
5274 if (obj_textsec (input_bfd)->linker_mark)
5275 {
57402f1e 5276 if (! aout_link_input_section (flaginfo, input_bfd,
116c20d2 5277 obj_textsec (input_bfd),
57402f1e 5278 &flaginfo->treloff,
116c20d2
NC		 5279 exec_hdr (input_bfd)->a_trsize))
5280 return FALSE;
5281 }
5282 if (obj_datasec (input_bfd)->linker_mark)
5283 {
57402f1e 5284 if (! aout_link_input_section (flaginfo, input_bfd,
116c20d2 5285 obj_datasec (input_bfd),
57402f1e 5286 &flaginfo->dreloff,
116c20d2
NC		 5287 exec_hdr (input_bfd)->a_drsize))
5288 return FALSE;
5289 }
5290
5291 /* If we are not keeping memory, we don't need the symbols any
5292 longer. We still need them if we are keeping memory, because the
5293 strings in the hash table point into them. */
57402f1e 5294 if (! flaginfo->info->keep_memory)
116c20d2
NC		 5295 {
5296 if (! aout_link_free_symbols (input_bfd))
5297 return FALSE;
5298 }
5299
5300 return TRUE;
5301}
5302
5303/* Do the final link step. This is called on the output BFD. The
5304 INFO structure should point to a list of BFDs linked through the
c72f2fb2 5305 link.next field which can be used to find each BFD which takes part
116c20d2
NC		 5306 in the output. Also, each section in ABFD should point to a list
5307 of bfd_link_order structures which list all the input sections for
5308 the output section. */
5309
5310bfd_boolean
5311NAME (aout, final_link) (bfd *abfd,
5312 struct bfd_link_info *info,
5313 void (*callback) (bfd *, file_ptr *, file_ptr *, file_ptr *))
5314{
5315 struct aout_final_link_info aout_info;
5316 bfd_boolean includes_hash_initialized = FALSE;
5317 bfd *sub;
5318 bfd_size_type trsize, drsize;
5319 bfd_size_type max_contents_size;
5320 bfd_size_type max_relocs_size;
5321 bfd_size_type max_sym_count;
116c20d2
NC		 5322 struct bfd_link_order *p;
5323 asection *o;
5324 bfd_boolean have_link_order_relocs;
5325
0e1862bb 5326 if (bfd_link_pic (info))
116c20d2
NC		 5327 abfd->flags |= DYNAMIC;
5328
5329 aout_info.info = info;
5330 aout_info.output_bfd = abfd;
5331 aout_info.contents = NULL;
5332 aout_info.relocs = NULL;
5333 aout_info.symbol_map = NULL;
5334 aout_info.output_syms = NULL;
252b5132 5335
66eb6687
AM		 5336 if (!bfd_hash_table_init_n (&aout_info.includes.root,
5337 aout_link_includes_newfunc,
5338 sizeof (struct aout_link_includes_entry),
5339 251))
116c20d2
NC		 5340 goto error_return;
5341 includes_hash_initialized = TRUE;
252b5132 5342
116c20d2
NC		 5343 /* Figure out the largest section size. Also, if generating
5344 relocatable output, count the relocs. */
5345 trsize = 0;
5346 drsize = 0;
5347 max_contents_size = 0;
5348 max_relocs_size = 0;
5349 max_sym_count = 0;
c72f2fb2 5350 for (sub = info->input_bfds; sub != NULL; sub = sub->link.next)
116c20d2
NC		 5351 {
5352 bfd_size_type sz;
252b5132 5353
0e1862bb 5354 if (bfd_link_relocatable (info))
116c20d2
NC		 5355 {
5356 if (bfd_get_flavour (sub) == bfd_target_aout_flavour)
252b5132 5357 {
116c20d2
NC		 5358 trsize += exec_hdr (sub)->a_trsize;
5359 drsize += exec_hdr (sub)->a_drsize;
252b5132 5360 }
252b5132
RH		 5361 else
5362 {
116c20d2
NC		 5363 /* FIXME: We need to identify the .text and .data sections
5364 and call get_reloc_upper_bound and canonicalize_reloc to
5365 work out the number of relocs needed, and then multiply
5366 by the reloc size. */
5367 (*_bfd_error_handler)
5368 (_("%s: relocatable link from %s to %s not supported"),
5369 bfd_get_filename (abfd),
5370 sub->xvec->name, abfd->xvec->name);
5371 bfd_set_error (bfd_error_invalid_operation);
5372 goto error_return;
252b5132 5373 }
116c20d2 5374 }
252b5132 5375
116c20d2
NC		 5376 if (bfd_get_flavour (sub) == bfd_target_aout_flavour)
5377 {
5378 sz = obj_textsec (sub)->size;
5379 if (sz > max_contents_size)
5380 max_contents_size = sz;
5381 sz = obj_datasec (sub)->size;
5382 if (sz > max_contents_size)
5383 max_contents_size = sz;
252b5132 5384
116c20d2
NC		 5385 sz = exec_hdr (sub)->a_trsize;
5386 if (sz > max_relocs_size)
5387 max_relocs_size = sz;
5388 sz = exec_hdr (sub)->a_drsize;
5389 if (sz > max_relocs_size)
5390 max_relocs_size = sz;
252b5132 5391
116c20d2
NC		 5392 sz = obj_aout_external_sym_count (sub);
5393 if (sz > max_sym_count)
5394 max_sym_count = sz;
252b5132
RH		 5395 }
5396 }
5397
0e1862bb 5398 if (bfd_link_relocatable (info))
116c20d2
NC		 5399 {
5400 if (obj_textsec (abfd) != NULL)
5401 trsize += (_bfd_count_link_order_relocs (obj_textsec (abfd)
8423293d 5402 ->map_head.link_order)
116c20d2
NC		 5403 * obj_reloc_entry_size (abfd));
5404 if (obj_datasec (abfd) != NULL)
5405 drsize += (_bfd_count_link_order_relocs (obj_datasec (abfd)
8423293d 5406 ->map_head.link_order)
116c20d2
NC		 5407 * obj_reloc_entry_size (abfd));
5408 }
252b5132 5409
116c20d2
NC		 5410 exec_hdr (abfd)->a_trsize = trsize;
5411 exec_hdr (abfd)->a_drsize = drsize;
252b5132 5412
116c20d2 5413 exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd);
252b5132 5414
116c20d2
NC		 5415 /* Adjust the section sizes and vmas according to the magic number.
5416 This sets a_text, a_data and a_bss in the exec_hdr and sets the
5417 filepos for each section. */
3a8c4a5b 5418 if (! NAME (aout, adjust_sizes_and_vmas) (abfd))
116c20d2 5419 goto error_return;
252b5132 5420
116c20d2
NC		 5421 /* The relocation and symbol file positions differ among a.out
5422 targets. We are passed a callback routine from the backend
5423 specific code to handle this.
5424 FIXME: At this point we do not know how much space the symbol
5425 table will require. This will not work for any (nonstandard)
5426 a.out target that needs to know the symbol table size before it
5427 can compute the relocation file positions. This may or may not
5428 be the case for the hp300hpux target, for example. */
5429 (*callback) (abfd, &aout_info.treloff, &aout_info.dreloff,
5430 &aout_info.symoff);
5431 obj_textsec (abfd)->rel_filepos = aout_info.treloff;
5432 obj_datasec (abfd)->rel_filepos = aout_info.dreloff;
5433 obj_sym_filepos (abfd) = aout_info.symoff;
252b5132 5434
116c20d2
NC		 5435 /* We keep a count of the symbols as we output them. */
5436 obj_aout_external_sym_count (abfd) = 0;
5437
5438 /* We accumulate the string table as we write out the symbols. */
5439 aout_info.strtab = _bfd_stringtab_init ();
5440 if (aout_info.strtab == NULL)
5441 goto error_return;
5442
5443 /* Allocate buffers to hold section contents and relocs. */
a50b1753 5444 aout_info.contents = (bfd_byte *) bfd_malloc (max_contents_size);
116c20d2 5445 aout_info.relocs = bfd_malloc (max_relocs_size);
c38eb2a6 5446 aout_info.symbol_map = (int *) bfd_malloc (max_sym_count * sizeof (int));
a50b1753
NC		 5447 aout_info.output_syms = (struct external_nlist *)
5448 bfd_malloc ((max_sym_count + 1) * sizeof (struct external_nlist));
116c20d2
NC		 5449 if ((aout_info.contents == NULL && max_contents_size != 0)
5450 || (aout_info.relocs == NULL && max_relocs_size != 0)
5451 || (aout_info.symbol_map == NULL && max_sym_count != 0)
5452 || aout_info.output_syms == NULL)
5453 goto error_return;
5454
5455 /* If we have a symbol named __DYNAMIC, force it out now. This is
5456 required by SunOS. Doing this here rather than in sunos.c is a
5457 hack, but it's easier than exporting everything which would be
5458 needed. */
5459 {
5460 struct aout_link_hash_entry *h;
5461
5462 h = aout_link_hash_lookup (aout_hash_table (info), "__DYNAMIC",
5463 FALSE, FALSE, FALSE);
5464 if (h != NULL)
7686d77d 5465 aout_link_write_other_symbol (&h->root.root, &aout_info);
116c20d2
NC		 5466 }
5467
5468 /* The most time efficient way to do the link would be to read all
5469 the input object files into memory and then sort out the
5470 information into the output file. Unfortunately, that will
5471 probably use too much memory. Another method would be to step
5472 through everything that composes the text section and write it
5473 out, and then everything that composes the data section and write
5474 it out, and then write out the relocs, and then write out the
5475 symbols. Unfortunately, that requires reading stuff from each
5476 input file several times, and we will not be able to keep all the
5477 input files open simultaneously, and reopening them will be slow.
5478
5479 What we do is basically process one input file at a time. We do
5480 everything we need to do with an input file once--copy over the
5481 section contents, handle the relocation information, and write
5482 out the symbols--and then we throw away the information we read
5483 from it. This approach requires a lot of lseeks of the output
5484 file, which is unfortunate but still faster than reopening a lot
5485 of files.
5486
5487 We use the output_has_begun field of the input BFDs to see
5488 whether we have already handled it. */
c72f2fb2 5489 for (sub = info->input_bfds; sub != NULL; sub = sub->link.next)
116c20d2 5490 sub->output_has_begun = FALSE;
252b5132 5491
116c20d2
NC		 5492 /* Mark all sections which are to be included in the link. This
5493 will normally be every section. We need to do this so that we
5494 can identify any sections which the linker has decided to not
5495 include. */
5496 for (o = abfd->sections; o != NULL; o = o->next)
252b5132 5497 {
8423293d 5498 for (p = o->map_head.link_order; p != NULL; p = p->next)
116c20d2
NC		 5499 if (p->type == bfd_indirect_link_order)
5500 p->u.indirect.section->linker_mark = TRUE;
252b5132
RH		 5501 }
5502
116c20d2
NC		 5503 have_link_order_relocs = FALSE;
5504 for (o = abfd->sections; o != NULL; o = o->next)
252b5132 5505 {
8423293d 5506 for (p = o->map_head.link_order;
116c20d2
NC		 5507 p != NULL;
5508 p = p->next)
252b5132 5509 {
116c20d2
NC		 5510 if (p->type == bfd_indirect_link_order
5511 && (bfd_get_flavour (p->u.indirect.section->owner)
5512 == bfd_target_aout_flavour))
252b5132 5513 {
116c20d2
NC		 5514 bfd *input_bfd;
5515
5516 input_bfd = p->u.indirect.section->owner;
5517 if (! input_bfd->output_has_begun)
252b5132 5518 {
116c20d2
NC		 5519 if (! aout_link_input_bfd (&aout_info, input_bfd))
5520 goto error_return;
5521 input_bfd->output_has_begun = TRUE;
252b5132 5522 }
252b5132 5523 }
116c20d2
NC		 5524 else if (p->type == bfd_section_reloc_link_order
5525 || p->type == bfd_symbol_reloc_link_order)
5526 {
5527 /* These are handled below. */
5528 have_link_order_relocs = TRUE;
5529 }
5530 else
5531 {
5532 if (! _bfd_default_link_order (abfd, info, o, p))
5533 goto error_return;
5534 }
252b5132
RH		 5535 }
5536 }
252b5132 5537
116c20d2 5538 /* Write out any symbols that we have not already written out. */
7686d77d
AM		 5539 bfd_hash_traverse (&info->hash->table,
5540 aout_link_write_other_symbol,
5541 &aout_info);
116c20d2
NC		 5542
5543 /* Now handle any relocs we were asked to create by the linker.
5544 These did not come from any input file. We must do these after
5545 we have written out all the symbols, so that we know the symbol
5546 indices to use. */
5547 if (have_link_order_relocs)
5548 {
5549 for (o = abfd->sections; o != NULL; o = o->next)
252b5132 5550 {
8423293d 5551 for (p = o->map_head.link_order;
116c20d2
NC		 5552 p != NULL;
5553 p = p->next)
5554 {
5555 if (p->type == bfd_section_reloc_link_order
5556 || p->type == bfd_symbol_reloc_link_order)
5557 {
5558 if (! aout_link_reloc_link_order (&aout_info, o, p))
5559 goto error_return;
5560 }
5561 }
252b5132 5562 }
116c20d2 5563 }
252b5132 5564
116c20d2
NC		 5565 if (aout_info.contents != NULL)
5566 {
5567 free (aout_info.contents);
5568 aout_info.contents = NULL;
5569 }
5570 if (aout_info.relocs != NULL)
5571 {
5572 free (aout_info.relocs);
5573 aout_info.relocs = NULL;
5574 }
5575 if (aout_info.symbol_map != NULL)
5576 {
5577 free (aout_info.symbol_map);
5578 aout_info.symbol_map = NULL;
5579 }
5580 if (aout_info.output_syms != NULL)
5581 {
5582 free (aout_info.output_syms);
5583 aout_info.output_syms = NULL;
5584 }
5585 if (includes_hash_initialized)
5586 {
5587 bfd_hash_table_free (&aout_info.includes.root);
5588 includes_hash_initialized = FALSE;
5589 }
252b5132 5590
116c20d2
NC		 5591 /* Finish up any dynamic linking we may be doing. */
5592 if (aout_backend_info (abfd)->finish_dynamic_link != NULL)
5593 {
5594 if (! (*aout_backend_info (abfd)->finish_dynamic_link) (abfd, info))
5595 goto error_return;
252b5132
RH		 5596 }
5597
116c20d2
NC		 5598 /* Update the header information. */
5599 abfd->symcount = obj_aout_external_sym_count (abfd);
5600 exec_hdr (abfd)->a_syms = abfd->symcount * EXTERNAL_NLIST_SIZE;
5601 obj_str_filepos (abfd) = obj_sym_filepos (abfd) + exec_hdr (abfd)->a_syms;
5602 obj_textsec (abfd)->reloc_count =
5603 exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd);
5604 obj_datasec (abfd)->reloc_count =
5605 exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd);
252b5132 5606
116c20d2 5607 /* Write out the string table, unless there are no symbols. */
f6e688f7
AM		 5608 if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0)
5609 goto error_return;
116c20d2
NC		 5610 if (abfd->symcount > 0)
5611 {
f6e688f7 5612 if (!emit_stringtab (abfd, aout_info.strtab))
116c20d2
NC		 5613 goto error_return;
5614 }
f6e688f7 5615 else
116c20d2 5616 {
f6e688f7 5617 bfd_byte b[BYTES_IN_WORD];
252b5132 5618
f6e688f7
AM		 5619 memset (b, 0, BYTES_IN_WORD);
5620 if (bfd_bwrite (b, (bfd_size_type) BYTES_IN_WORD, abfd) != BYTES_IN_WORD)
116c20d2
NC		 5621 goto error_return;
5622 }
252b5132 5623
b34976b6 5624 return TRUE;
116c20d2
NC		 5625
5626 error_return:
5627 if (aout_info.contents != NULL)
5628 free (aout_info.contents);
5629 if (aout_info.relocs != NULL)
5630 free (aout_info.relocs);
5631 if (aout_info.symbol_map != NULL)
5632 free (aout_info.symbol_map);
5633 if (aout_info.output_syms != NULL)
5634 free (aout_info.output_syms);
5635 if (includes_hash_initialized)
5636 bfd_hash_table_free (&aout_info.includes.root);
5637 return FALSE;
252b5132 5638}
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