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Better ld --fatal-warnings support
[deliverable/binutils-gdb.git] / bfd / aoutx.h
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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
4f26fb3a
JM		 736 || machine == bfd_mach_sparc_v8plusc
737 || machine == bfd_mach_sparc_v8plusd
738 || machine == bfd_mach_sparc_v8pluse
739 || machine == bfd_mach_sparc_v8plusv
740 || machine == bfd_mach_sparc_v8plusm
74d26813
L		 741 || machine == bfd_mach_sparc_v9
742 || machine == bfd_mach_sparc_v9a
4f26fb3a
JM		 743 || machine == bfd_mach_sparc_v9b
744 || machine == bfd_mach_sparc_v9c
745 || machine == bfd_mach_sparc_v9d
746 || machine == bfd_mach_sparc_v9e
747 || machine == bfd_mach_sparc_v9v
748 || machine == bfd_mach_sparc_v9m)
923f08ff
AM		 749 arch_flags = M_SPARC;
750 else if (machine == bfd_mach_sparc_sparclet)
751 arch_flags = M_SPARCLET;
752 break;
753
754 case bfd_arch_m68k:
755 switch (machine)
756 {
757 case 0: arch_flags = M_68010; break;
b34976b6 758 case bfd_mach_m68000: arch_flags = M_UNKNOWN; *unknown = FALSE; break;
923f08ff
AM		 759 case bfd_mach_m68010: arch_flags = M_68010; break;
760 case bfd_mach_m68020: arch_flags = M_68020; break;
761 default: arch_flags = M_UNKNOWN; break;
762 }
252b5132 763 break;
923f08ff
AM		 764
765 case bfd_arch_i386:
3b77b1d5
AM		 766 if (machine == 0
767 || machine == bfd_mach_i386_i386
768 || machine == bfd_mach_i386_i386_intel_syntax)
923f08ff 769 arch_flags = M_386;
252b5132 770 break;
923f08ff 771
923f08ff
AM		 772 case bfd_arch_arm:
773 if (machine == 0)
774 arch_flags = M_ARM;
252b5132 775 break;
252b5132 776
923f08ff
AM		 777 case bfd_arch_mips:
778 switch (machine)
779 {
780 case 0:
781 case bfd_mach_mips3000:
782 case bfd_mach_mips3900:
783 arch_flags = M_MIPS1;
784 break;
785 case bfd_mach_mips6000:
786 arch_flags = M_MIPS2;
787 break;
788 case bfd_mach_mips4000:
789 case bfd_mach_mips4010:
790 case bfd_mach_mips4100:
791 case bfd_mach_mips4300:
792 case bfd_mach_mips4400:
793 case bfd_mach_mips4600:
794 case bfd_mach_mips4650:
795 case bfd_mach_mips8000:
0d2e43ed 796 case bfd_mach_mips9000:
923f08ff
AM		 797 case bfd_mach_mips10000:
798 case bfd_mach_mips12000:
3aa3176b
TS		 799 case bfd_mach_mips14000:
800 case bfd_mach_mips16000:
923f08ff
AM		 801 case bfd_mach_mips16:
802 case bfd_mach_mipsisa32:
af7ee8bf 803 case bfd_mach_mipsisa32r2:
ae52f483
AB		 804 case bfd_mach_mipsisa32r3:
805 case bfd_mach_mipsisa32r5:
7361da2c 806 case bfd_mach_mipsisa32r6:
923f08ff
AM		 807 case bfd_mach_mips5:
808 case bfd_mach_mipsisa64:
5f74bc13 809 case bfd_mach_mipsisa64r2:
ae52f483
AB		 810 case bfd_mach_mipsisa64r3:
811 case bfd_mach_mipsisa64r5:
7361da2c 812 case bfd_mach_mipsisa64r6:
923f08ff 813 case bfd_mach_mips_sb1:
52b6b6b9 814 case bfd_mach_mips_xlr:
923f08ff
AM		 815 /* FIXME: These should be MIPS3, MIPS4, MIPS16, MIPS32, etc. */
816 arch_flags = M_MIPS2;
817 break;
818 default:
819 arch_flags = M_UNKNOWN;
820 break;
821 }
822 break;
823
824 case bfd_arch_ns32k:
825 switch (machine)
826 {
827 case 0: arch_flags = M_NS32532; break;
828 case 32032: arch_flags = M_NS32032; break;
829 case 32532: arch_flags = M_NS32532; break;
830 default: arch_flags = M_UNKNOWN; break;
831 }
832 break;
252b5132 833
923f08ff 834 case bfd_arch_vax:
b34976b6 835 *unknown = FALSE;
923f08ff 836 break;
06c15ad7 837
923f08ff
AM		 838 case bfd_arch_cris:
839 if (machine == 0 || machine == 255)
840 arch_flags = M_CRIS;
841 break;
842
727e493d
MK		 843 case bfd_arch_m88k:
844 *unknown = FALSE;
845 break;
846
923f08ff
AM		 847 default:
848 arch_flags = M_UNKNOWN;
849 }
252b5132
RH		 850
851 if (arch_flags != M_UNKNOWN)
b34976b6 852 *unknown = FALSE;
252b5132
RH		 853
854 return arch_flags;
855}
856
252b5132
RH		 857/*
858FUNCTION
859 aout_@var{size}_set_arch_mach
860
861SYNOPSIS
b34976b6 862 bfd_boolean aout_@var{size}_set_arch_mach,
252b5132
RH		 863 (bfd *,
864 enum bfd_architecture arch,
116c20d2 865 unsigned long machine);
252b5132
RH		 866
867DESCRIPTION
868 Set the architecture and the machine of the BFD @var{abfd} to the
869 values @var{arch} and @var{machine}. Verify that @var{abfd}'s format
870 can support the architecture required.
871*/
872
b34976b6 873bfd_boolean
116c20d2
NC		 874NAME (aout, set_arch_mach) (bfd *abfd,
875 enum bfd_architecture arch,
876 unsigned long machine)
252b5132
RH		 877{
878 if (! bfd_default_set_arch_mach (abfd, arch, machine))
b34976b6 879 return FALSE;
252b5132
RH		 880
881 if (arch != bfd_arch_unknown)
882 {
b34976b6 883 bfd_boolean unknown;
252b5132 884
116c20d2 885 NAME (aout, machine_type) (arch, machine, &unknown);
252b5132 886 if (unknown)
b34976b6 887 return FALSE;
252b5132
RH		 888 }
889
f7c33884 890 /* Determine the size of a relocation entry. */
923f08ff
AM		 891 switch (arch)
892 {
893 case bfd_arch_sparc:
923f08ff
AM		 894 case bfd_arch_mips:
895 obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE;
896 break;
897 default:
898 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
899 break;
900 }
252b5132 901
923f08ff 902 return (*aout_backend_info (abfd)->set_sizes) (abfd);
252b5132
RH		 903}
904
905static void
116c20d2 906adjust_o_magic (bfd *abfd, struct internal_exec *execp)
252b5132
RH		 907{
908 file_ptr pos = adata (abfd).exec_bytes_size;
909 bfd_vma vma = 0;
910 int pad = 0;
911
912 /* Text. */
923f08ff
AM		 913 obj_textsec (abfd)->filepos = pos;
914 if (!obj_textsec (abfd)->user_set_vma)
915 obj_textsec (abfd)->vma = vma;
252b5132 916 else
923f08ff 917 vma = obj_textsec (abfd)->vma;
252b5132 918
eea6121a
AM		 919 pos += obj_textsec (abfd)->size;
920 vma += obj_textsec (abfd)->size;
252b5132
RH		 921
922 /* Data. */
923f08ff 923 if (!obj_datasec (abfd)->user_set_vma)
252b5132 924 {
eea6121a 925 obj_textsec (abfd)->size += pad;
252b5132
RH		 926 pos += pad;
927 vma += pad;
923f08ff 928 obj_datasec (abfd)->vma = vma;
252b5132
RH		 929 }
930 else
923f08ff
AM		 931 vma = obj_datasec (abfd)->vma;
932 obj_datasec (abfd)->filepos = pos;
eea6121a
AM		 933 pos += obj_datasec (abfd)->size;
934 vma += obj_datasec (abfd)->size;
252b5132
RH		 935
936 /* BSS. */
923f08ff 937 if (!obj_bsssec (abfd)->user_set_vma)
252b5132 938 {
eea6121a 939 obj_datasec (abfd)->size += pad;
252b5132
RH		 940 pos += pad;
941 vma += pad;
923f08ff 942 obj_bsssec (abfd)->vma = vma;
252b5132
RH		 943 }
944 else
945 {
08da05b0 946 /* The VMA of the .bss section is set by the VMA of the
252b5132
RH		 947 .data section plus the size of the .data section. We may
948 need to add padding bytes to make this true. */
949 pad = obj_bsssec (abfd)->vma - vma;
950 if (pad > 0)
951 {
eea6121a 952 obj_datasec (abfd)->size += pad;
252b5132
RH		 953 pos += pad;
954 }
955 }
923f08ff 956 obj_bsssec (abfd)->filepos = pos;
252b5132
RH		 957
958 /* Fix up the exec header. */
eea6121a
AM		 959 execp->a_text = obj_textsec (abfd)->size;
960 execp->a_data = obj_datasec (abfd)->size;
961 execp->a_bss = obj_bsssec (abfd)->size;
bbb1afc8 962 N_SET_MAGIC (execp, OMAGIC);
252b5132
RH		 963}
964
965static void
116c20d2 966adjust_z_magic (bfd *abfd, struct internal_exec *execp)
252b5132
RH		 967{
968 bfd_size_type data_pad, text_pad;
969 file_ptr text_end;
dc810e39 970 const struct aout_backend_data *abdp;
116c20d2
NC		 971 /* TRUE if text includes exec header. */
972 bfd_boolean ztih;
0ef5a5bd 973
252b5132
RH		 974 abdp = aout_backend_info (abfd);
975
976 /* Text. */
977 ztih = (abdp != NULL
978 && (abdp->text_includes_header
979 || obj_aout_subformat (abfd) == q_magic_format));
923f08ff
AM		 980 obj_textsec (abfd)->filepos = (ztih
981 ? adata (abfd).exec_bytes_size
982 : adata (abfd).zmagic_disk_block_size);
983 if (! obj_textsec (abfd)->user_set_vma)
252b5132
RH		 984 {
985 /* ?? Do we really need to check for relocs here? */
923f08ff
AM		 986 obj_textsec (abfd)->vma = ((abfd->flags & HAS_RELOC)
987 ? 0
988 : (ztih
989 ? (abdp->default_text_vma
990 + adata (abfd).exec_bytes_size)
991 : abdp->default_text_vma));
252b5132
RH		 992 text_pad = 0;
993 }
994 else
995 {
996 /* The .text section is being loaded at an unusual address. We
997 may need to pad it such that the .data section starts at a page
998 boundary. */
999 if (ztih)
1000 text_pad = ((obj_textsec (abfd)->filepos - obj_textsec (abfd)->vma)
1001 & (adata (abfd).page_size - 1));
1002 else
1003 text_pad = ((- obj_textsec (abfd)->vma)
1004 & (adata (abfd).page_size - 1));
1005 }
1006
1007 /* Find start of data. */
1008 if (ztih)
1009 {
eea6121a 1010 text_end = obj_textsec (abfd)->filepos + obj_textsec (abfd)->size;
252b5132
RH		 1011 text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end;
1012 }
1013 else
1014 {
1015 /* Note that if page_size == zmagic_disk_block_size, then
1016 filepos == page_size, and this case is the same as the ztih
1017 case. */
eea6121a 1018 text_end = obj_textsec (abfd)->size;
252b5132
RH		 1019 text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end;
1020 text_end += obj_textsec (abfd)->filepos;
1021 }
eea6121a 1022 obj_textsec (abfd)->size += text_pad;
252b5132
RH		 1023 text_end += text_pad;
1024
1025 /* Data. */
923f08ff 1026 if (!obj_datasec (abfd)->user_set_vma)
252b5132
RH		 1027 {
1028 bfd_vma vma;
eea6121a 1029 vma = obj_textsec (abfd)->vma + obj_textsec (abfd)->size;
923f08ff 1030 obj_datasec (abfd)->vma = BFD_ALIGN (vma, adata (abfd).segment_size);
252b5132
RH		 1031 }
1032 if (abdp && abdp->zmagic_mapped_contiguous)
1033 {
dee0a8f4
NC		 1034 asection * text = obj_textsec (abfd);
1035 asection * data = obj_datasec (abfd);
1036
eea6121a 1037 text_pad = data->vma - (text->vma + text->size);
dee0a8f4
NC		 1038 /* Only pad the text section if the data
1039 section is going to be placed after it. */
1040 if (text_pad > 0)
eea6121a 1041 text->size += text_pad;
252b5132 1042 }
923f08ff 1043 obj_datasec (abfd)->filepos = (obj_textsec (abfd)->filepos
eea6121a 1044 + obj_textsec (abfd)->size);
0ef5a5bd 1045
252b5132 1046 /* Fix up exec header while we're at it. */
eea6121a 1047 execp->a_text = obj_textsec (abfd)->size;
252b5132 1048 if (ztih && (!abdp || (abdp && !abdp->exec_header_not_counted)))
923f08ff 1049 execp->a_text += adata (abfd).exec_bytes_size;
252b5132 1050 if (obj_aout_subformat (abfd) == q_magic_format)
bbb1afc8 1051 N_SET_MAGIC (execp, QMAGIC);
252b5132 1052 else
bbb1afc8 1053 N_SET_MAGIC (execp, ZMAGIC);
252b5132
RH		 1054
1055 /* Spec says data section should be rounded up to page boundary. */
eea6121a
AM		 1056 obj_datasec (abfd)->size
1057 = align_power (obj_datasec (abfd)->size,
923f08ff 1058 obj_bsssec (abfd)->alignment_power);
eea6121a 1059 execp->a_data = BFD_ALIGN (obj_datasec (abfd)->size,
923f08ff 1060 adata (abfd).page_size);
eea6121a 1061 data_pad = execp->a_data - obj_datasec (abfd)->size;
252b5132
RH		 1062
1063 /* BSS. */
923f08ff
AM		 1064 if (!obj_bsssec (abfd)->user_set_vma)
1065 obj_bsssec (abfd)->vma = (obj_datasec (abfd)->vma
eea6121a 1066 + obj_datasec (abfd)->size);
252b5132
RH		 1067 /* If the BSS immediately follows the data section and extra space
1068 in the page is left after the data section, fudge data
1069 in the header so that the bss section looks smaller by that
1070 amount. We'll start the bss section there, and lie to the OS.
1071 (Note that a linker script, as well as the above assignment,
1072 could have explicitly set the BSS vma to immediately follow
1073 the data section.) */
923f08ff 1074 if (align_power (obj_bsssec (abfd)->vma, obj_bsssec (abfd)->alignment_power)
eea6121a
AM		 1075 == obj_datasec (abfd)->vma + obj_datasec (abfd)->size)
1076 execp->a_bss = (data_pad > obj_bsssec (abfd)->size
1077 ? 0 : obj_bsssec (abfd)->size - data_pad);
252b5132 1078 else
eea6121a 1079 execp->a_bss = obj_bsssec (abfd)->size;
252b5132
RH		 1080}
1081
1082static void
116c20d2 1083adjust_n_magic (bfd *abfd, struct internal_exec *execp)
252b5132 1084{
923f08ff 1085 file_ptr pos = adata (abfd).exec_bytes_size;
252b5132
RH		 1086 bfd_vma vma = 0;
1087 int pad;
0ef5a5bd 1088
252b5132 1089 /* Text. */
923f08ff
AM		 1090 obj_textsec (abfd)->filepos = pos;
1091 if (!obj_textsec (abfd)->user_set_vma)
1092 obj_textsec (abfd)->vma = vma;
252b5132 1093 else
923f08ff 1094 vma = obj_textsec (abfd)->vma;
eea6121a
AM		 1095 pos += obj_textsec (abfd)->size;
1096 vma += obj_textsec (abfd)->size;
252b5132
RH		 1097
1098 /* Data. */
923f08ff
AM		 1099 obj_datasec (abfd)->filepos = pos;
1100 if (!obj_datasec (abfd)->user_set_vma)
1101 obj_datasec (abfd)->vma = BFD_ALIGN (vma, adata (abfd).segment_size);
1102 vma = obj_datasec (abfd)->vma;
0ef5a5bd 1103
252b5132 1104 /* Since BSS follows data immediately, see if it needs alignment. */
eea6121a 1105 vma += obj_datasec (abfd)->size;
923f08ff 1106 pad = align_power (vma, obj_bsssec (abfd)->alignment_power) - vma;
eea6121a
AM		 1107 obj_datasec (abfd)->size += pad;
1108 pos += obj_datasec (abfd)->size;
252b5132
RH		 1109
1110 /* BSS. */
923f08ff
AM		 1111 if (!obj_bsssec (abfd)->user_set_vma)
1112 obj_bsssec (abfd)->vma = vma;
252b5132 1113 else
923f08ff 1114 vma = obj_bsssec (abfd)->vma;
252b5132
RH		 1115
1116 /* Fix up exec header. */
eea6121a
AM		 1117 execp->a_text = obj_textsec (abfd)->size;
1118 execp->a_data = obj_datasec (abfd)->size;
1119 execp->a_bss = obj_bsssec (abfd)->size;
bbb1afc8 1120 N_SET_MAGIC (execp, NMAGIC);
252b5132
RH		 1121}
1122
b34976b6 1123bfd_boolean
3a8c4a5b 1124NAME (aout, adjust_sizes_and_vmas) (bfd *abfd)
252b5132
RH		 1125{
1126 struct internal_exec *execp = exec_hdr (abfd);
1127
116c20d2 1128 if (! NAME (aout, make_sections) (abfd))
b34976b6 1129 return FALSE;
252b5132 1130
923f08ff 1131 if (adata (abfd).magic != undecided_magic)
b34976b6 1132 return TRUE;
252b5132 1133
eea6121a
AM		 1134 obj_textsec (abfd)->size =
1135 align_power (obj_textsec (abfd)->size,
923f08ff 1136 obj_textsec (abfd)->alignment_power);
252b5132 1137
252b5132
RH		 1138 /* Rule (heuristic) for when to pad to a new page. Note that there
1139 are (at least) two ways demand-paged (ZMAGIC) files have been
1140 handled. Most Berkeley-based systems start the text segment at
1141 (TARGET_PAGE_SIZE). However, newer versions of SUNOS start the text
1142 segment right after the exec header; the latter is counted in the
1143 text segment size, and is paged in by the kernel with the rest of
0ef5a5bd 1144 the text. */
252b5132
RH		 1145
1146 /* This perhaps isn't the right way to do this, but made it simpler for me
1147 to understand enough to implement it. Better would probably be to go
1148 right from BFD flags to alignment/positioning characteristics. But the
1149 old code was sloppy enough about handling the flags, and had enough
1150 other magic, that it was a little hard for me to understand. I think
1151 I understand it better now, but I haven't time to do the cleanup this
1152 minute. */
1153
1154 if (abfd->flags & D_PAGED)
1155 /* Whether or not WP_TEXT is set -- let D_PAGED override. */
923f08ff 1156 adata (abfd).magic = z_magic;
252b5132 1157 else if (abfd->flags & WP_TEXT)
923f08ff 1158 adata (abfd).magic = n_magic;
252b5132 1159 else
923f08ff 1160 adata (abfd).magic = o_magic;
252b5132
RH		 1161
1162#ifdef BFD_AOUT_DEBUG /* requires gcc2 */
1163#if __GNUC__ >= 2
1164 fprintf (stderr, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n",
1165 ({ char *str;
923f08ff
AM		 1166 switch (adata (abfd).magic)
1167 {
1168 case n_magic: str = "NMAGIC"; break;
1169 case o_magic: str = "OMAGIC"; break;
1170 case z_magic: str = "ZMAGIC"; break;
1171 default: abort ();
1172 }
252b5132
RH		 1173 str;
1174 }),
eea6121a 1175 obj_textsec (abfd)->vma, obj_textsec (abfd)->size,
923f08ff 1176 obj_textsec (abfd)->alignment_power,
eea6121a 1177 obj_datasec (abfd)->vma, obj_datasec (abfd)->size,
923f08ff 1178 obj_datasec (abfd)->alignment_power,
eea6121a 1179 obj_bsssec (abfd)->vma, obj_bsssec (abfd)->size,
923f08ff 1180 obj_bsssec (abfd)->alignment_power);
252b5132
RH		 1181#endif
1182#endif
1183
923f08ff 1184 switch (adata (abfd).magic)
252b5132
RH		 1185 {
1186 case o_magic:
1187 adjust_o_magic (abfd, execp);
1188 break;
1189 case z_magic:
1190 adjust_z_magic (abfd, execp);
1191 break;
1192 case n_magic:
1193 adjust_n_magic (abfd, execp);
1194 break;
1195 default:
1196 abort ();
1197 }
1198
1199#ifdef BFD_AOUT_DEBUG
1200 fprintf (stderr, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n",
eea6121a 1201 obj_textsec (abfd)->vma, obj_textsec (abfd)->size,
923f08ff 1202 obj_textsec (abfd)->filepos,
eea6121a 1203 obj_datasec (abfd)->vma, obj_datasec (abfd)->size,
923f08ff 1204 obj_datasec (abfd)->filepos,
eea6121a 1205 obj_bsssec (abfd)->vma, obj_bsssec (abfd)->size);
252b5132
RH		 1206#endif
1207
b34976b6 1208 return TRUE;
252b5132
RH		 1209}
1210
1211/*
1212FUNCTION
1213 aout_@var{size}_new_section_hook
1214
1215SYNOPSIS
b34976b6 1216 bfd_boolean aout_@var{size}_new_section_hook,
252b5132 1217 (bfd *abfd,
116c20d2 1218 asection *newsect);
252b5132
RH		 1219
1220DESCRIPTION
1221 Called by the BFD in response to a @code{bfd_make_section}
1222 request.
1223*/
b34976b6 1224bfd_boolean
116c20d2 1225NAME (aout, new_section_hook) (bfd *abfd, asection *newsect)
252b5132 1226{
f7c33884 1227 /* Align to double at least. */
923f08ff 1228 newsect->alignment_power = bfd_get_arch_info (abfd)->section_align_power;
252b5132 1229
252b5132 1230 if (bfd_get_format (abfd) == bfd_object)
f7c33884
NC		 1231 {
1232 if (obj_textsec (abfd) == NULL && !strcmp (newsect->name, ".text"))
1233 {
1234 obj_textsec (abfd)= newsect;
1235 newsect->target_index = N_TEXT;
f7c33884 1236 }
f592407e 1237 else if (obj_datasec (abfd) == NULL && !strcmp (newsect->name, ".data"))
f7c33884
NC		 1238 {
1239 obj_datasec (abfd) = newsect;
1240 newsect->target_index = N_DATA;
f7c33884 1241 }
f592407e 1242 else if (obj_bsssec (abfd) == NULL && !strcmp (newsect->name, ".bss"))
f7c33884
NC		 1243 {
1244 obj_bsssec (abfd) = newsect;
1245 newsect->target_index = N_BSS;
f7c33884
NC		 1246 }
1247 }
252b5132 1248
f7c33884 1249 /* We allow more than three sections internally. */
f592407e 1250 return _bfd_generic_new_section_hook (abfd, newsect);
252b5132
RH		 1251}
1252
b34976b6 1253bfd_boolean
116c20d2
NC		 1254NAME (aout, set_section_contents) (bfd *abfd,
1255 sec_ptr section,
1256 const void * location,
1257 file_ptr offset,
1258 bfd_size_type count)
252b5132 1259{
252b5132
RH		 1260 if (! abfd->output_has_begun)
1261 {
3a8c4a5b 1262 if (! NAME (aout, adjust_sizes_and_vmas) (abfd))
b34976b6 1263 return FALSE;
252b5132
RH		 1264 }
1265
1266 if (section == obj_bsssec (abfd))
1267 {
1268 bfd_set_error (bfd_error_no_contents);
b34976b6 1269 return FALSE;
252b5132
RH		 1270 }
1271
1272 if (section != obj_textsec (abfd)
1273 && section != obj_datasec (abfd))
1274 {
e6af3a53
NC		 1275 if (aout_section_merge_with_text_p (abfd, section))
1276 section->filepos = obj_textsec (abfd)->filepos +
1277 (section->vma - obj_textsec (abfd)->vma);
1278 else
1279 {
1280 (*_bfd_error_handler)
1281 (_("%s: can not represent section `%s' in a.out object file format"),
1282 bfd_get_filename (abfd), bfd_get_section_name (abfd, section));
1283 bfd_set_error (bfd_error_nonrepresentable_section);
1284 return FALSE;
1285 }
252b5132
RH		 1286 }
1287
1288 if (count != 0)
1289 {
1290 if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0
dc810e39 1291 || bfd_bwrite (location, count, abfd) != count)
b34976b6 1292 return FALSE;
252b5132
RH		 1293 }
1294
b34976b6 1295 return TRUE;
252b5132
RH		 1296}
1297\f
1298/* Read the external symbols from an a.out file. */
1299
b34976b6 1300static bfd_boolean
116c20d2 1301aout_get_external_symbols (bfd *abfd)
252b5132 1302{
116c20d2 1303 if (obj_aout_external_syms (abfd) == NULL)
252b5132
RH		 1304 {
1305 bfd_size_type count;
1306 struct external_nlist *syms;
7c53fd1c 1307 bfd_size_type amt = exec_hdr (abfd)->a_syms;
252b5132 1308
7c53fd1c 1309 count = amt / EXTERNAL_NLIST_SIZE;
6b8f0fd5
MS		 1310 if (count == 0)
1311 return TRUE; /* Nothing to do. */
252b5132
RH		 1312
1313#ifdef USE_MMAP
7c53fd1c 1314 if (! bfd_get_file_window (abfd, obj_sym_filepos (abfd), amt,
b34976b6
AM		 1315 &obj_aout_sym_window (abfd), TRUE))
1316 return FALSE;
252b5132
RH		 1317 syms = (struct external_nlist *) obj_aout_sym_window (abfd).data;
1318#else
1319 /* We allocate using malloc to make the values easy to free
1320 later on. If we put them on the objalloc it might not be
1321 possible to free them. */
7c53fd1c 1322 syms = (struct external_nlist *) bfd_malloc (amt);
6b8f0fd5 1323 if (syms == NULL)
b34976b6 1324 return FALSE;
252b5132 1325
7c53fd1c
AM		 1326 if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
1327 || bfd_bread (syms, amt, abfd) != amt)
1328 {
1329 free (syms);
1330 return FALSE;
1331 }
252b5132
RH		 1332#endif
1333
1334 obj_aout_external_syms (abfd) = syms;
1335 obj_aout_external_sym_count (abfd) = count;
1336 }
0ef5a5bd 1337
252b5132
RH		 1338 if (obj_aout_external_strings (abfd) == NULL
1339 && exec_hdr (abfd)->a_syms != 0)
1340 {
1341 unsigned char string_chars[BYTES_IN_WORD];
1342 bfd_size_type stringsize;
1343 char *strings;
dc810e39 1344 bfd_size_type amt = BYTES_IN_WORD;
252b5132
RH		 1345
1346 /* Get the size of the strings. */
1347 if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0
116c20d2 1348 || bfd_bread ((void *) string_chars, amt, abfd) != amt)
b34976b6 1349 return FALSE;
252b5132
RH		 1350 stringsize = GET_WORD (abfd, string_chars);
1351
1352#ifdef USE_MMAP
82e51918 1353 if (! bfd_get_file_window (abfd, obj_str_filepos (abfd), stringsize,
b34976b6
AM		 1354 &obj_aout_string_window (abfd), TRUE))
1355 return FALSE;
252b5132
RH		 1356 strings = (char *) obj_aout_string_window (abfd).data;
1357#else
a50b1753 1358 strings = (char *) bfd_malloc (stringsize + 1);
252b5132 1359 if (strings == NULL)
b34976b6 1360 return FALSE;
252b5132
RH		 1361
1362 /* Skip space for the string count in the buffer for convenience
1363 when using indexes. */
dc810e39
AM		 1364 amt = stringsize - BYTES_IN_WORD;
1365 if (bfd_bread (strings + BYTES_IN_WORD, amt, abfd) != amt)
252b5132
RH		 1366 {
1367 free (strings);
b34976b6 1368 return FALSE;
252b5132
RH		 1369 }
1370#endif
1371
1372 /* Ensure that a zero index yields an empty string. */
1373 strings[0] = '\0';
1374
1375 strings[stringsize - 1] = 0;
1376
1377 obj_aout_external_strings (abfd) = strings;
1378 obj_aout_external_string_size (abfd) = stringsize;
1379 }
1380
b34976b6 1381 return TRUE;
252b5132
RH		 1382}
1383
1384/* Translate an a.out symbol into a BFD symbol. The desc, other, type
1385 and symbol->value fields of CACHE_PTR will be set from the a.out
1386 nlist structure. This function is responsible for setting
1387 symbol->flags and symbol->section, and adjusting symbol->value. */
1388
b34976b6 1389static bfd_boolean
116c20d2 1390translate_from_native_sym_flags (bfd *abfd, aout_symbol_type *cache_ptr)
252b5132
RH		 1391{
1392 flagword visible;
1393
1394 if ((cache_ptr->type & N_STAB) != 0
1395 || cache_ptr->type == N_FN)
1396 {
1397 asection *sec;
1398
1399 /* This is a debugging symbol. */
252b5132
RH		 1400 cache_ptr->symbol.flags = BSF_DEBUGGING;
1401
1402 /* Work out the symbol section. */
1403 switch (cache_ptr->type & N_TYPE)
1404 {
1405 case N_TEXT:
1406 case N_FN:
1407 sec = obj_textsec (abfd);
1408 break;
1409 case N_DATA:
1410 sec = obj_datasec (abfd);
1411 break;
1412 case N_BSS:
1413 sec = obj_bsssec (abfd);
1414 break;
1415 default:
1416 case N_ABS:
1417 sec = bfd_abs_section_ptr;
1418 break;
1419 }
1420
1421 cache_ptr->symbol.section = sec;
1422 cache_ptr->symbol.value -= sec->vma;
1423
b34976b6 1424 return TRUE;
252b5132
RH		 1425 }
1426
1427 /* Get the default visibility. This does not apply to all types, so
1428 we just hold it in a local variable to use if wanted. */
1429 if ((cache_ptr->type & N_EXT) == 0)
1430 visible = BSF_LOCAL;
1431 else
1432 visible = BSF_GLOBAL;
1433
1434 switch (cache_ptr->type)
1435 {
1436 default:
1437 case N_ABS: case N_ABS | N_EXT:
1438 cache_ptr->symbol.section = bfd_abs_section_ptr;
1439 cache_ptr->symbol.flags = visible;
1440 break;
1441
1442 case N_UNDF | N_EXT:
1443 if (cache_ptr->symbol.value != 0)
1444 {
1445 /* This is a common symbol. */
1446 cache_ptr->symbol.flags = BSF_GLOBAL;
1447 cache_ptr->symbol.section = bfd_com_section_ptr;
1448 }
1449 else
1450 {
1451 cache_ptr->symbol.flags = 0;
1452 cache_ptr->symbol.section = bfd_und_section_ptr;
1453 }
1454 break;
1455
1456 case N_TEXT: case N_TEXT | N_EXT:
1457 cache_ptr->symbol.section = obj_textsec (abfd);
1458 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1459 cache_ptr->symbol.flags = visible;
1460 break;
1461
1462 /* N_SETV symbols used to represent set vectors placed in the
1463 data section. They are no longer generated. Theoretically,
1464 it was possible to extract the entries and combine them with
1465 new ones, although I don't know if that was ever actually
1466 done. Unless that feature is restored, treat them as data
1467 symbols. */
1468 case N_SETV: case N_SETV | N_EXT:
1469 case N_DATA: case N_DATA | N_EXT:
1470 cache_ptr->symbol.section = obj_datasec (abfd);
1471 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1472 cache_ptr->symbol.flags = visible;
1473 break;
1474
1475 case N_BSS: case N_BSS | N_EXT:
1476 cache_ptr->symbol.section = obj_bsssec (abfd);
1477 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1478 cache_ptr->symbol.flags = visible;
1479 break;
1480
1481 case N_SETA: case N_SETA | N_EXT:
1482 case N_SETT: case N_SETT | N_EXT:
1483 case N_SETD: case N_SETD | N_EXT:
1484 case N_SETB: case N_SETB | N_EXT:
1485 {
1486 /* This code is no longer needed. It used to be used to make
1487 the linker handle set symbols, but they are now handled in
1488 the add_symbols routine instead. */
252b5132
RH		 1489 switch (cache_ptr->type & N_TYPE)
1490 {
1491 case N_SETA:
1492 cache_ptr->symbol.section = bfd_abs_section_ptr;
1493 break;
1494 case N_SETT:
1495 cache_ptr->symbol.section = obj_textsec (abfd);
1496 break;
1497 case N_SETD:
1498 cache_ptr->symbol.section = obj_datasec (abfd);
1499 break;
1500 case N_SETB:
1501 cache_ptr->symbol.section = obj_bsssec (abfd);
1502 break;
1503 }
1504
1505 cache_ptr->symbol.flags |= BSF_CONSTRUCTOR;
1506 }
1507 break;
1508
1509 case N_WARNING:
1510 /* This symbol is the text of a warning message. The next
1511 symbol is the symbol to associate the warning with. If a
1512 reference is made to that symbol, a warning is issued. */
1513 cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_WARNING;
1514 cache_ptr->symbol.section = bfd_abs_section_ptr;
1515 break;
1516
1517 case N_INDR: case N_INDR | N_EXT:
1518 /* An indirect symbol. This consists of two symbols in a row.
1519 The first symbol is the name of the indirection. The second
1520 symbol is the name of the target. A reference to the first
1521 symbol becomes a reference to the second. */
1522 cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_INDIRECT | visible;
1523 cache_ptr->symbol.section = bfd_ind_section_ptr;
1524 break;
1525
1526 case N_WEAKU:
1527 cache_ptr->symbol.section = bfd_und_section_ptr;
1528 cache_ptr->symbol.flags = BSF_WEAK;
1529 break;
1530
1531 case N_WEAKA:
1532 cache_ptr->symbol.section = bfd_abs_section_ptr;
1533 cache_ptr->symbol.flags = BSF_WEAK;
1534 break;
1535
1536 case N_WEAKT:
1537 cache_ptr->symbol.section = obj_textsec (abfd);
1538 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1539 cache_ptr->symbol.flags = BSF_WEAK;
1540 break;
1541
1542 case N_WEAKD:
1543 cache_ptr->symbol.section = obj_datasec (abfd);
1544 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1545 cache_ptr->symbol.flags = BSF_WEAK;
1546 break;
1547
1548 case N_WEAKB:
1549 cache_ptr->symbol.section = obj_bsssec (abfd);
1550 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1551 cache_ptr->symbol.flags = BSF_WEAK;
1552 break;
1553 }
1554
b34976b6 1555 return TRUE;
252b5132
RH		 1556}
1557
1558/* Set the fields of SYM_POINTER according to CACHE_PTR. */
1559
b34976b6 1560static bfd_boolean
116c20d2
NC		 1561translate_to_native_sym_flags (bfd *abfd,
1562 asymbol *cache_ptr,
1563 struct external_nlist *sym_pointer)
252b5132
RH		 1564{
1565 bfd_vma value = cache_ptr->value;
1566 asection *sec;
1567 bfd_vma off;
1568
1569 /* Mask out any existing type bits in case copying from one section
1570 to another. */
1571 sym_pointer->e_type[0] &= ~N_TYPE;
1572
1573 sec = bfd_get_section (cache_ptr);
1574 off = 0;
1575
1576 if (sec == NULL)
1577 {
1578 /* This case occurs, e.g., for the *DEBUG* section of a COFF
1579 file. */
1580 (*_bfd_error_handler)
1581 (_("%s: can not represent section for symbol `%s' in a.out object file format"),
0ef5a5bd 1582 bfd_get_filename (abfd),
252b5132
RH		 1583 cache_ptr->name != NULL ? cache_ptr->name : _("*unknown*"));
1584 bfd_set_error (bfd_error_nonrepresentable_section);
b34976b6 1585 return FALSE;
252b5132
RH		 1586 }
1587
1588 if (sec->output_section != NULL)
1589 {
1590 off = sec->output_offset;
1591 sec = sec->output_section;
1592 }
1593
1594 if (bfd_is_abs_section (sec))
1595 sym_pointer->e_type[0] |= N_ABS;
1596 else if (sec == obj_textsec (abfd))
1597 sym_pointer->e_type[0] |= N_TEXT;
1598 else if (sec == obj_datasec (abfd))
1599 sym_pointer->e_type[0] |= N_DATA;
1600 else if (sec == obj_bsssec (abfd))
1601 sym_pointer->e_type[0] |= N_BSS;
1602 else if (bfd_is_und_section (sec))
1603 sym_pointer->e_type[0] = N_UNDF | N_EXT;
1604 else if (bfd_is_ind_section (sec))
1605 sym_pointer->e_type[0] = N_INDR;
1606 else if (bfd_is_com_section (sec))
1607 sym_pointer->e_type[0] = N_UNDF | N_EXT;
1608 else
1609 {
e6af3a53
NC		 1610 if (aout_section_merge_with_text_p (abfd, sec))
1611 sym_pointer->e_type[0] |= N_TEXT;
1612 else
1613 {
1614 (*_bfd_error_handler)
1615 (_("%s: can not represent section `%s' in a.out object file format"),
1616 bfd_get_filename (abfd), bfd_get_section_name (abfd, sec));
1617 bfd_set_error (bfd_error_nonrepresentable_section);
1618 return FALSE;
1619 }
252b5132
RH		 1620 }
1621
f7c33884 1622 /* Turn the symbol from section relative to absolute again. */
252b5132
RH		 1623 value += sec->vma + off;
1624
1625 if ((cache_ptr->flags & BSF_WARNING) != 0)
1626 sym_pointer->e_type[0] = N_WARNING;
1627
1628 if ((cache_ptr->flags & BSF_DEBUGGING) != 0)
1629 sym_pointer->e_type[0] = ((aout_symbol_type *) cache_ptr)->type;
1630 else if ((cache_ptr->flags & BSF_GLOBAL) != 0)
1631 sym_pointer->e_type[0] |= N_EXT;
930d924d
L		 1632 else if ((cache_ptr->flags & BSF_LOCAL) != 0)
1633 sym_pointer->e_type[0] &= ~N_EXT;
252b5132
RH		 1634
1635 if ((cache_ptr->flags & BSF_CONSTRUCTOR) != 0)
1636 {
1637 int type = ((aout_symbol_type *) cache_ptr)->type;
f7c33884 1638
252b5132
RH		 1639 switch (type)
1640 {
1641 case N_ABS: type = N_SETA; break;
1642 case N_TEXT: type = N_SETT; break;
1643 case N_DATA: type = N_SETD; break;
1644 case N_BSS: type = N_SETB; break;
1645 }
1646 sym_pointer->e_type[0] = type;
1647 }
1648
1649 if ((cache_ptr->flags & BSF_WEAK) != 0)
1650 {
1651 int type;
1652
1653 switch (sym_pointer->e_type[0] & N_TYPE)
1654 {
1655 default:
1656 case N_ABS: type = N_WEAKA; break;
1657 case N_TEXT: type = N_WEAKT; break;
1658 case N_DATA: type = N_WEAKD; break;
1659 case N_BSS: type = N_WEAKB; break;
1660 case N_UNDF: type = N_WEAKU; break;
1661 }
1662 sym_pointer->e_type[0] = type;
1663 }
1664
923f08ff 1665 PUT_WORD (abfd, value, sym_pointer->e_value);
252b5132 1666
b34976b6 1667 return TRUE;
252b5132
RH		 1668}
1669\f
0ef5a5bd 1670/* Native-level interface to symbols. */
252b5132
RH		 1671
1672asymbol *
116c20d2 1673NAME (aout, make_empty_symbol) (bfd *abfd)
252b5132 1674{
dc810e39 1675 bfd_size_type amt = sizeof (aout_symbol_type);
116c20d2 1676
d3ce72d0
NC		 1677 aout_symbol_type *new_symbol = (aout_symbol_type *) bfd_zalloc (abfd, amt);
1678 if (!new_symbol)
252b5132 1679 return NULL;
d3ce72d0 1680 new_symbol->symbol.the_bfd = abfd;
252b5132 1681
d3ce72d0 1682 return &new_symbol->symbol;
252b5132
RH		 1683}
1684
1685/* Translate a set of internal symbols into external symbols. */
1686
b34976b6 1687bfd_boolean
116c20d2
NC		 1688NAME (aout, translate_symbol_table) (bfd *abfd,
1689 aout_symbol_type *in,
1690 struct external_nlist *ext,
1691 bfd_size_type count,
1692 char *str,
1693 bfd_size_type strsize,
1694 bfd_boolean dynamic)
252b5132
RH		 1695{
1696 struct external_nlist *ext_end;
1697
1698 ext_end = ext + count;
1699 for (; ext < ext_end; ext++, in++)
1700 {
1701 bfd_vma x;
1702
1703 x = GET_WORD (abfd, ext->e_strx);
1704 in->symbol.the_bfd = abfd;
1705
1706 /* For the normal symbols, the zero index points at the number
1707 of bytes in the string table but is to be interpreted as the
1708 null string. For the dynamic symbols, the number of bytes in
1709 the string table is stored in the __DYNAMIC structure and the
1710 zero index points at an actual string. */
1711 if (x == 0 && ! dynamic)
1712 in->symbol.name = "";
1713 else if (x < strsize)
1714 in->symbol.name = str + x;
1715 else
b34976b6 1716 return FALSE;
252b5132
RH		 1717
1718 in->symbol.value = GET_SWORD (abfd, ext->e_value);
dc810e39
AM		 1719 in->desc = H_GET_16 (abfd, ext->e_desc);
1720 in->other = H_GET_8 (abfd, ext->e_other);
1721 in->type = H_GET_8 (abfd, ext->e_type);
252b5132
RH		 1722 in->symbol.udata.p = NULL;
1723
1724 if (! translate_from_native_sym_flags (abfd, in))
b34976b6 1725 return FALSE;
252b5132
RH		 1726
1727 if (dynamic)
1728 in->symbol.flags |= BSF_DYNAMIC;
1729 }
1730
b34976b6 1731 return TRUE;
252b5132
RH		 1732}
1733
1734/* We read the symbols into a buffer, which is discarded when this
1735 function exits. We read the strings into a buffer large enough to
0ef5a5bd 1736 hold them all plus all the cached symbol entries. */
252b5132 1737
b34976b6 1738bfd_boolean
116c20d2 1739NAME (aout, slurp_symbol_table) (bfd *abfd)
252b5132
RH		 1740{
1741 struct external_nlist *old_external_syms;
1742 aout_symbol_type *cached;
dc810e39 1743 bfd_size_type cached_size;
252b5132 1744
f7c33884 1745 /* If there's no work to be done, don't do any. */
116c20d2 1746 if (obj_aout_symbols (abfd) != NULL)
b34976b6 1747 return TRUE;
252b5132
RH		 1748
1749 old_external_syms = obj_aout_external_syms (abfd);
1750
1751 if (! aout_get_external_symbols (abfd))
b34976b6 1752 return FALSE;
252b5132 1753
dc810e39 1754 cached_size = obj_aout_external_sym_count (abfd);
87b32780
MS		 1755 if (cached_size == 0)
1756 return TRUE; /* Nothing to do. */
1757
dc810e39 1758 cached_size *= sizeof (aout_symbol_type);
a50b1753 1759 cached = (aout_symbol_type *) bfd_zmalloc (cached_size);
87b32780 1760 if (cached == NULL)
b34976b6 1761 return FALSE;
252b5132
RH		 1762
1763 /* Convert from external symbol information to internal. */
116c20d2 1764 if (! (NAME (aout, translate_symbol_table)
252b5132
RH		 1765 (abfd, cached,
1766 obj_aout_external_syms (abfd),
1767 obj_aout_external_sym_count (abfd),
1768 obj_aout_external_strings (abfd),
1769 obj_aout_external_string_size (abfd),
b34976b6 1770 FALSE)))
252b5132
RH		 1771 {
1772 free (cached);
b34976b6 1773 return FALSE;
252b5132
RH		 1774 }
1775
1776 bfd_get_symcount (abfd) = obj_aout_external_sym_count (abfd);
1777
1778 obj_aout_symbols (abfd) = cached;
1779
1780 /* It is very likely that anybody who calls this function will not
1781 want the external symbol information, so if it was allocated
1782 because of our call to aout_get_external_symbols, we free it up
1783 right away to save space. */
116c20d2
NC		 1784 if (old_external_syms == NULL
1785 && obj_aout_external_syms (abfd) != NULL)
252b5132
RH		 1786 {
1787#ifdef USE_MMAP
1788 bfd_free_window (&obj_aout_sym_window (abfd));
1789#else
1790 free (obj_aout_external_syms (abfd));
1791#endif
1792 obj_aout_external_syms (abfd) = NULL;
1793 }
1794
b34976b6 1795 return TRUE;
252b5132
RH		 1796}
1797\f
1798/* We use a hash table when writing out symbols so that we only write
1799 out a particular string once. This helps particularly when the
1800 linker writes out stabs debugging entries, because each different
1801 contributing object file tends to have many duplicate stabs
1802 strings.
1803
1804 This hash table code breaks dbx on SunOS 4.1.3, so we don't do it
1805 if BFD_TRADITIONAL_FORMAT is set. */
1806
252b5132
RH		 1807/* Get the index of a string in a strtab, adding it if it is not
1808 already present. */
1809
116c20d2
NC		 1810static inline bfd_size_type
1811add_to_stringtab (bfd *abfd,
1812 struct bfd_strtab_hash *tab,
1813 const char *str,
1814 bfd_boolean copy)
252b5132 1815{
b34976b6 1816 bfd_boolean hash;
91d6fa6a 1817 bfd_size_type str_index;
252b5132
RH		 1818
1819 /* An index of 0 always means the empty string. */
1820 if (str == 0 || *str == '\0')
1821 return 0;
1822
1823 /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx
1824 doesn't understand a hashed string table. */
b34976b6 1825 hash = TRUE;
252b5132 1826 if ((abfd->flags & BFD_TRADITIONAL_FORMAT) != 0)
b34976b6 1827 hash = FALSE;
252b5132 1828
91d6fa6a 1829 str_index = _bfd_stringtab_add (tab, str, hash, copy);
252b5132 1830
91d6fa6a 1831 if (str_index != (bfd_size_type) -1)
116c20d2
NC		 1832 /* Add BYTES_IN_WORD to the return value to account for the
1833 space taken up by the string table size. */
91d6fa6a 1834 str_index += BYTES_IN_WORD;
252b5132 1835
91d6fa6a 1836 return str_index;
252b5132
RH		 1837}
1838
1839/* Write out a strtab. ABFD is already at the right location in the
1840 file. */
1841
b34976b6 1842static bfd_boolean
116c20d2 1843emit_stringtab (bfd *abfd, struct bfd_strtab_hash *tab)
252b5132
RH		 1844{
1845 bfd_byte buffer[BYTES_IN_WORD];
dc810e39 1846 bfd_size_type amt = BYTES_IN_WORD;
252b5132
RH		 1847
1848 /* The string table starts with the size. */
1849 PUT_WORD (abfd, _bfd_stringtab_size (tab) + BYTES_IN_WORD, buffer);
116c20d2 1850 if (bfd_bwrite ((void *) buffer, amt, abfd) != amt)
b34976b6 1851 return FALSE;
252b5132
RH		 1852
1853 return _bfd_stringtab_emit (abfd, tab);
1854}
1855\f
b34976b6 1856bfd_boolean
116c20d2 1857NAME (aout, write_syms) (bfd *abfd)
252b5132
RH		 1858{
1859 unsigned int count ;
1860 asymbol **generic = bfd_get_outsymbols (abfd);
1861 struct bfd_strtab_hash *strtab;
1862
1863 strtab = _bfd_stringtab_init ();
1864 if (strtab == NULL)
b34976b6 1865 return FALSE;
252b5132
RH		 1866
1867 for (count = 0; count < bfd_get_symcount (abfd); count++)
1868 {
1869 asymbol *g = generic[count];
1870 bfd_size_type indx;
1871 struct external_nlist nsp;
dc810e39 1872 bfd_size_type amt;
252b5132 1873
b34976b6 1874 indx = add_to_stringtab (abfd, strtab, g->name, FALSE);
252b5132
RH		 1875 if (indx == (bfd_size_type) -1)
1876 goto error_return;
1877 PUT_WORD (abfd, indx, (bfd_byte *) nsp.e_strx);
1878
923f08ff 1879 if (bfd_asymbol_flavour (g) == abfd->xvec->flavour)
252b5132 1880 {
923f08ff
AM		 1881 H_PUT_16 (abfd, aout_symbol (g)->desc, nsp.e_desc);
1882 H_PUT_8 (abfd, aout_symbol (g)->other, nsp.e_other);
1883 H_PUT_8 (abfd, aout_symbol (g)->type, nsp.e_type);
252b5132
RH		 1884 }
1885 else
1886 {
dc810e39
AM		 1887 H_PUT_16 (abfd, 0, nsp.e_desc);
1888 H_PUT_8 (abfd, 0, nsp.e_other);
1889 H_PUT_8 (abfd, 0, nsp.e_type);
252b5132
RH		 1890 }
1891
1892 if (! translate_to_native_sym_flags (abfd, g, &nsp))
1893 goto error_return;
1894
dc810e39 1895 amt = EXTERNAL_NLIST_SIZE;
116c20d2 1896 if (bfd_bwrite ((void *) &nsp, amt, abfd) != amt)
252b5132
RH		 1897 goto error_return;
1898
1899 /* NB: `KEEPIT' currently overlays `udata.p', so set this only
1900 here, at the end. */
1901 g->KEEPIT = count;
1902 }
1903
1904 if (! emit_stringtab (abfd, strtab))
1905 goto error_return;
1906
1907 _bfd_stringtab_free (strtab);
1908
b34976b6 1909 return TRUE;
252b5132
RH		 1910
1911error_return:
1912 _bfd_stringtab_free (strtab);
b34976b6 1913 return FALSE;
252b5132 1914}
252b5132
RH		 1915\f
1916long
116c20d2 1917NAME (aout, canonicalize_symtab) (bfd *abfd, asymbol **location)
252b5132 1918{
116c20d2
NC		 1919 unsigned int counter = 0;
1920 aout_symbol_type *symbase;
252b5132 1921
116c20d2
NC		 1922 if (!NAME (aout, slurp_symbol_table) (abfd))
1923 return -1;
252b5132 1924
116c20d2
NC		 1925 for (symbase = obj_aout_symbols (abfd);
1926 counter++ < bfd_get_symcount (abfd);
1927 )
1928 *(location++) = (asymbol *) (symbase++);
1929 *location++ =0;
1930 return bfd_get_symcount (abfd);
252b5132 1931}
252b5132 1932\f
f7c33884 1933/* Standard reloc stuff. */
0ef5a5bd 1934/* Output standard relocation information to a file in target byte order. */
252b5132 1935
116c20d2
NC		 1936extern void NAME (aout, swap_std_reloc_out)
1937 (bfd *, arelent *, struct reloc_std_external *);
252b5132
RH		 1938
1939void
116c20d2
NC		 1940NAME (aout, swap_std_reloc_out) (bfd *abfd,
1941 arelent *g,
1942 struct reloc_std_external *natptr)
252b5132
RH		 1943{
1944 int r_index;
1945 asymbol *sym = *(g->sym_ptr_ptr);
1946 int r_extern;
1947 unsigned int r_length;
1948 int r_pcrel;
1949 int r_baserel, r_jmptable, r_relative;
1950 asection *output_section = sym->section->output_section;
1951
923f08ff 1952 PUT_WORD (abfd, g->address, natptr->r_address);
252b5132 1953
f7c33884
NC		 1954 r_length = g->howto->size ; /* Size as a power of two. */
1955 r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */
252b5132
RH		 1956 /* XXX This relies on relocs coming from a.out files. */
1957 r_baserel = (g->howto->type & 8) != 0;
1958 r_jmptable = (g->howto->type & 16) != 0;
1959 r_relative = (g->howto->type & 32) != 0;
1960
f7c33884 1961 /* Name was clobbered by aout_write_syms to be symbol index. */
252b5132
RH		 1962
1963 /* If this relocation is relative to a symbol then set the
1964 r_index to the symbols index, and the r_extern bit.
1965
1966 Absolute symbols can come in in two ways, either as an offset
1967 from the abs section, or as a symbol which has an abs value.
f7c33884 1968 check for that here. */
252b5132 1969
252b5132
RH		 1970 if (bfd_is_com_section (output_section)
1971 || bfd_is_abs_section (output_section)
22184a77
NC		 1972 || bfd_is_und_section (output_section)
1973 /* PR gas/3041 a.out relocs against weak symbols
1974 must be treated as if they were against externs. */
1975 || (sym->flags & BSF_WEAK))
252b5132
RH		 1976 {
1977 if (bfd_abs_section_ptr->symbol == sym)
f7c33884
NC		 1978 {
1979 /* Whoops, looked like an abs symbol, but is
1980 really an offset from the abs section. */
1981 r_index = N_ABS;
1982 r_extern = 0;
1983 }
252b5132 1984 else
f7c33884
NC		 1985 {
1986 /* Fill in symbol. */
1987 r_extern = 1;
1988 r_index = (*(g->sym_ptr_ptr))->KEEPIT;
1989 }
252b5132
RH		 1990 }
1991 else
1992 {
f7c33884 1993 /* Just an ordinary section. */
252b5132
RH		 1994 r_extern = 0;
1995 r_index = output_section->target_index;
1996 }
1997
f7c33884 1998 /* Now the fun stuff. */
923f08ff
AM		 1999 if (bfd_header_big_endian (abfd))
2000 {
252b5132
RH		 2001 natptr->r_index[0] = r_index >> 16;
2002 natptr->r_index[1] = r_index >> 8;
2003 natptr->r_index[2] = r_index;
923f08ff
AM		 2004 natptr->r_type[0] = ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0)
2005 | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0)
2006 | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0)
2007 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0)
2008 | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0)
2009 | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG));
2010 }
2011 else
2012 {
2013 natptr->r_index[2] = r_index >> 16;
2014 natptr->r_index[1] = r_index >> 8;
2015 natptr->r_index[0] = r_index;
2016 natptr->r_type[0] = ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0)
2017 | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0)
2018 | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0)
2019 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0)
2020 | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0)
2021 | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE));
2022 }
252b5132
RH		 2023}
2024
f7c33884 2025/* Extended stuff. */
0ef5a5bd 2026/* Output extended relocation information to a file in target byte order. */
252b5132 2027
116c20d2
NC		 2028extern void NAME (aout, swap_ext_reloc_out)
2029 (bfd *, arelent *, struct reloc_ext_external *);
252b5132
RH		 2030
2031void
116c20d2
NC		 2032NAME (aout, swap_ext_reloc_out) (bfd *abfd,
2033 arelent *g,
2034 struct reloc_ext_external *natptr)
252b5132
RH		 2035{
2036 int r_index;
2037 int r_extern;
2038 unsigned int r_type;
dc810e39 2039 bfd_vma r_addend;
252b5132
RH		 2040 asymbol *sym = *(g->sym_ptr_ptr);
2041 asection *output_section = sym->section->output_section;
2042
2043 PUT_WORD (abfd, g->address, natptr->r_address);
2044
2045 r_type = (unsigned int) g->howto->type;
2046
2047 r_addend = g->addend;
2048 if ((sym->flags & BSF_SECTION_SYM) != 0)
2049 r_addend += (*(g->sym_ptr_ptr))->section->output_section->vma;
2050
2051 /* If this relocation is relative to a symbol then set the
2052 r_index to the symbols index, and the r_extern bit.
2053
2054 Absolute symbols can come in in two ways, either as an offset
2055 from the abs section, or as a symbol which has an abs value.
2056 check for that here. */
252b5132
RH		 2057 if (bfd_is_abs_section (bfd_get_section (sym)))
2058 {
2059 r_extern = 0;
2060 r_index = N_ABS;
2061 }
2062 else if ((sym->flags & BSF_SECTION_SYM) == 0)
2063 {
2064 if (bfd_is_und_section (bfd_get_section (sym))
2065 || (sym->flags & BSF_GLOBAL) != 0)
2066 r_extern = 1;
2067 else
2068 r_extern = 0;
2069 r_index = (*(g->sym_ptr_ptr))->KEEPIT;
2070 }
2071 else
2072 {
f7c33884 2073 /* Just an ordinary section. */
252b5132
RH		 2074 r_extern = 0;
2075 r_index = output_section->target_index;
2076 }
2077
f7c33884 2078 /* Now the fun stuff. */
923f08ff
AM		 2079 if (bfd_header_big_endian (abfd))
2080 {
2081 natptr->r_index[0] = r_index >> 16;
2082 natptr->r_index[1] = r_index >> 8;
2083 natptr->r_index[2] = r_index;
2084 natptr->r_type[0] = ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0)
2085 | (r_type << RELOC_EXT_BITS_TYPE_SH_BIG));
2086 }
2087 else
2088 {
2089 natptr->r_index[2] = r_index >> 16;
2090 natptr->r_index[1] = r_index >> 8;
2091 natptr->r_index[0] = r_index;
2092 natptr->r_type[0] = ((r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0)
2093 | (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE));
2094 }
252b5132
RH		 2095
2096 PUT_WORD (abfd, r_addend, natptr->r_addend);
2097}
2098
2099/* BFD deals internally with all things based from the section they're
2100 in. so, something in 10 bytes into a text section with a base of
2101 50 would have a symbol (.text+10) and know .text vma was 50.
2102
2103 Aout keeps all it's symbols based from zero, so the symbol would
2104 contain 60. This macro subs the base of each section from the value
923f08ff
AM		 2105 to give the true offset from the section. */
2106
2107#define MOVE_ADDRESS(ad) \
2108 if (r_extern) \
2109 { \
2110 /* Undefined symbol. */ \
2111 cache_ptr->sym_ptr_ptr = symbols + r_index; \
252b5132 2112 cache_ptr->addend = ad; \
252b5132 2113 } \
923f08ff
AM		 2114 else \
2115 { \
2116 /* Defined, section relative. Replace symbol with pointer to \
2117 symbol which points to section. */ \
2118 switch (r_index) \
2119 { \
2120 case N_TEXT: \
2121 case N_TEXT | N_EXT: \
2122 cache_ptr->sym_ptr_ptr = obj_textsec (abfd)->symbol_ptr_ptr; \
2123 cache_ptr->addend = ad - su->textsec->vma; \
2124 break; \
2125 case N_DATA: \
2126 case N_DATA | N_EXT: \
2127 cache_ptr->sym_ptr_ptr = obj_datasec (abfd)->symbol_ptr_ptr; \
2128 cache_ptr->addend = ad - su->datasec->vma; \
2129 break; \
2130 case N_BSS: \
2131 case N_BSS | N_EXT: \
2132 cache_ptr->sym_ptr_ptr = obj_bsssec (abfd)->symbol_ptr_ptr; \
2133 cache_ptr->addend = ad - su->bsssec->vma; \
2134 break; \
2135 default: \
2136 case N_ABS: \
2137 case N_ABS | N_EXT: \
2138 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \
2139 cache_ptr->addend = ad; \
2140 break; \
2141 } \
2142 }
252b5132
RH		 2143
2144void
116c20d2
NC		 2145NAME (aout, swap_ext_reloc_in) (bfd *abfd,
2146 struct reloc_ext_external *bytes,
2147 arelent *cache_ptr,
2148 asymbol **symbols,
2149 bfd_size_type symcount)
252b5132
RH		 2150{
2151 unsigned int r_index;
2152 int r_extern;
2153 unsigned int r_type;
2154 struct aoutdata *su = &(abfd->tdata.aout_data->a);
2155
2156 cache_ptr->address = (GET_SWORD (abfd, bytes->r_address));
2157
f7c33884 2158 /* Now the fun stuff. */
923f08ff
AM		 2159 if (bfd_header_big_endian (abfd))
2160 {
d45913a0
DA		 2161 r_index = (((unsigned int) bytes->r_index[0] << 16)
2162 | ((unsigned int) bytes->r_index[1] << 8)
923f08ff
AM		 2163 | bytes->r_index[2]);
2164 r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG));
2165 r_type = ((bytes->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
2166 >> RELOC_EXT_BITS_TYPE_SH_BIG);
2167 }
2168 else
2169 {
d45913a0
DA		 2170 r_index = (((unsigned int) bytes->r_index[2] << 16)
2171 | ((unsigned int) bytes->r_index[1] << 8)
923f08ff
AM		 2172 | bytes->r_index[0]);
2173 r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE));
2174 r_type = ((bytes->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
2175 >> RELOC_EXT_BITS_TYPE_SH_LITTLE);
2176 }
252b5132 2177
ad756e3f
AM		 2178 if (r_type < TABLE_SIZE (howto_table_ext))
2179 cache_ptr->howto = howto_table_ext + r_type;
2180 else
2181 cache_ptr->howto = NULL;
252b5132
RH		 2182
2183 /* Base relative relocs are always against the symbol table,
2184 regardless of the setting of r_extern. r_extern just reflects
2185 whether the symbol the reloc is against is local or global. */
d45913a0
DA		 2186 if (r_type == (unsigned int) RELOC_BASE10
2187 || r_type == (unsigned int) RELOC_BASE13
2188 || r_type == (unsigned int) RELOC_BASE22)
252b5132
RH		 2189 r_extern = 1;
2190
2191 if (r_extern && r_index > symcount)
2192 {
2193 /* We could arrange to return an error, but it might be useful
2194 to see the file even if it is bad. */
2195 r_extern = 0;
2196 r_index = N_ABS;
2197 }
2198
923f08ff 2199 MOVE_ADDRESS (GET_SWORD (abfd, bytes->r_addend));
252b5132
RH		 2200}
2201
2202void
116c20d2
NC		 2203NAME (aout, swap_std_reloc_in) (bfd *abfd,
2204 struct reloc_std_external *bytes,
2205 arelent *cache_ptr,
2206 asymbol **symbols,
2207 bfd_size_type symcount)
252b5132
RH		 2208{
2209 unsigned int r_index;
2210 int r_extern;
2211 unsigned int r_length;
2212 int r_pcrel;
2213 int r_baserel, r_jmptable, r_relative;
2214 struct aoutdata *su = &(abfd->tdata.aout_data->a);
2215 unsigned int howto_idx;
2216
dc810e39 2217 cache_ptr->address = H_GET_32 (abfd, bytes->r_address);
252b5132 2218
f7c33884 2219 /* Now the fun stuff. */
923f08ff
AM		 2220 if (bfd_header_big_endian (abfd))
2221 {
d45913a0
DA		 2222 r_index = (((unsigned int) bytes->r_index[0] << 16)
2223 | ((unsigned int) bytes->r_index[1] << 8)
923f08ff
AM		 2224 | bytes->r_index[2]);
2225 r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
2226 r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
2227 r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_BIG));
2228 r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG));
2229 r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG));
2230 r_length = ((bytes->r_type[0] & RELOC_STD_BITS_LENGTH_BIG)
2231 >> RELOC_STD_BITS_LENGTH_SH_BIG);
2232 }
2233 else
2234 {
d45913a0
DA		 2235 r_index = (((unsigned int) bytes->r_index[2] << 16)
2236 | ((unsigned int) bytes->r_index[1] << 8)
923f08ff
AM		 2237 | bytes->r_index[0]);
2238 r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
2239 r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
2240 r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE));
2241 r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE));
2242 r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE));
2243 r_length = ((bytes->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE)
2244 >> RELOC_STD_BITS_LENGTH_SH_LITTLE);
2245 }
252b5132 2246
923f08ff
AM		 2247 howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel
2248 + 16 * r_jmptable + 32 * r_relative);
ad756e3f
AM		 2249 if (howto_idx < TABLE_SIZE (howto_table_std))
2250 {
2251 cache_ptr->howto = howto_table_std + howto_idx;
2252 if (cache_ptr->howto->type == (unsigned int) -1)
2253 cache_ptr->howto = NULL;
2254 }
2255 else
2256 cache_ptr->howto = NULL;
252b5132
RH		 2257
2258 /* Base relative relocs are always against the symbol table,
2259 regardless of the setting of r_extern. r_extern just reflects
2260 whether the symbol the reloc is against is local or global. */
2261 if (r_baserel)
2262 r_extern = 1;
2263
2264 if (r_extern && r_index > symcount)
2265 {
2266 /* We could arrange to return an error, but it might be useful
2267 to see the file even if it is bad. */
2268 r_extern = 0;
2269 r_index = N_ABS;
2270 }
2271
923f08ff 2272 MOVE_ADDRESS (0);
252b5132
RH		 2273}
2274
2275/* Read and swap the relocs for a section. */
2276
b34976b6 2277bfd_boolean
116c20d2 2278NAME (aout, slurp_reloc_table) (bfd *abfd, sec_ptr asect, asymbol **symbols)
252b5132 2279{
dc810e39 2280 bfd_size_type count;
252b5132 2281 bfd_size_type reloc_size;
116c20d2 2282 void * relocs;
252b5132
RH		 2283 arelent *reloc_cache;
2284 size_t each_size;
2285 unsigned int counter = 0;
2286 arelent *cache_ptr;
dc810e39 2287 bfd_size_type amt;
252b5132
RH		 2288
2289 if (asect->relocation)
b34976b6 2290 return TRUE;
252b5132
RH		 2291
2292 if (asect->flags & SEC_CONSTRUCTOR)
b34976b6 2293 return TRUE;
252b5132
RH		 2294
2295 if (asect == obj_datasec (abfd))
923f08ff 2296 reloc_size = exec_hdr (abfd)->a_drsize;
252b5132 2297 else if (asect == obj_textsec (abfd))
923f08ff 2298 reloc_size = exec_hdr (abfd)->a_trsize;
252b5132
RH		 2299 else if (asect == obj_bsssec (abfd))
2300 reloc_size = 0;
2301 else
2302 {
2303 bfd_set_error (bfd_error_invalid_operation);
b34976b6 2304 return FALSE;
252b5132
RH		 2305 }
2306
078c4bfc
MS		 2307 if (reloc_size == 0)
2308 return TRUE; /* Nothing to be done. */
2309
252b5132 2310 if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0)
b34976b6 2311 return FALSE;
252b5132
RH		 2312
2313 each_size = obj_reloc_entry_size (abfd);
2314
2315 count = reloc_size / each_size;
078c4bfc
MS		 2316 if (count == 0)
2317 return TRUE; /* Nothing to be done. */
252b5132 2318
dc810e39 2319 amt = count * sizeof (arelent);
a50b1753 2320 reloc_cache = (arelent *) bfd_zmalloc (amt);
078c4bfc 2321 if (reloc_cache == NULL)
b34976b6 2322 return FALSE;
252b5132 2323
dc810e39 2324 relocs = bfd_malloc (reloc_size);
078c4bfc 2325 if (relocs == NULL)
252b5132
RH		 2326 {
2327 free (reloc_cache);
b34976b6 2328 return FALSE;
252b5132
RH		 2329 }
2330
dc810e39 2331 if (bfd_bread (relocs, reloc_size, abfd) != reloc_size)
252b5132
RH		 2332 {
2333 free (relocs);
2334 free (reloc_cache);
b34976b6 2335 return FALSE;
252b5132
RH		 2336 }
2337
2338 cache_ptr = reloc_cache;
2339 if (each_size == RELOC_EXT_SIZE)
2340 {
dc810e39 2341 struct reloc_ext_external *rptr = (struct reloc_ext_external *) relocs;
252b5132
RH		 2342
2343 for (; counter < count; counter++, rptr++, cache_ptr++)
1642229e 2344 MY_swap_ext_reloc_in (abfd, rptr, cache_ptr, symbols,
dc810e39 2345 (bfd_size_type) bfd_get_symcount (abfd));
252b5132
RH		 2346 }
2347 else
2348 {
dc810e39 2349 struct reloc_std_external *rptr = (struct reloc_std_external *) relocs;
252b5132
RH		 2350
2351 for (; counter < count; counter++, rptr++, cache_ptr++)
2352 MY_swap_std_reloc_in (abfd, rptr, cache_ptr, symbols,
dc810e39 2353 (bfd_size_type) bfd_get_symcount (abfd));
252b5132
RH		 2354 }
2355
2356 free (relocs);
2357
2358 asect->relocation = reloc_cache;
2359 asect->reloc_count = cache_ptr - reloc_cache;
2360
b34976b6 2361 return TRUE;
252b5132
RH		 2362}
2363
2364/* Write out a relocation section into an object file. */
2365
b34976b6 2366bfd_boolean
116c20d2 2367NAME (aout, squirt_out_relocs) (bfd *abfd, asection *section)
252b5132
RH		 2368{
2369 arelent **generic;
2370 unsigned char *native, *natptr;
2371 size_t each_size;
2372
2373 unsigned int count = section->reloc_count;
dc810e39 2374 bfd_size_type natsize;
252b5132
RH		 2375
2376 if (count == 0 || section->orelocation == NULL)
b34976b6 2377 return TRUE;
252b5132
RH		 2378
2379 each_size = obj_reloc_entry_size (abfd);
dc810e39 2380 natsize = (bfd_size_type) each_size * count;
a50b1753 2381 native = (unsigned char *) bfd_zalloc (abfd, natsize);
252b5132 2382 if (!native)
b34976b6 2383 return FALSE;
252b5132
RH		 2384
2385 generic = section->orelocation;
2386
2387 if (each_size == RELOC_EXT_SIZE)
2388 {
2389 for (natptr = native;
2390 count != 0;
2391 --count, natptr += each_size, ++generic)
1642229e
HPN		 2392 MY_swap_ext_reloc_out (abfd, *generic,
2393 (struct reloc_ext_external *) natptr);
252b5132
RH		 2394 }
2395 else
2396 {
2397 for (natptr = native;
2398 count != 0;
2399 --count, natptr += each_size, ++generic)
923f08ff
AM		 2400 MY_swap_std_reloc_out (abfd, *generic,
2401 (struct reloc_std_external *) natptr);
252b5132
RH		 2402 }
2403
116c20d2 2404 if (bfd_bwrite ((void *) native, natsize, abfd) != natsize)
dc810e39 2405 {
923f08ff 2406 bfd_release (abfd, native);
b34976b6 2407 return FALSE;
dc810e39 2408 }
252b5132
RH		 2409 bfd_release (abfd, native);
2410
b34976b6 2411 return TRUE;
252b5132
RH		 2412}
2413
f7c33884
NC		 2414/* This is stupid. This function should be a boolean predicate. */
2415
252b5132 2416long
116c20d2
NC		 2417NAME (aout, canonicalize_reloc) (bfd *abfd,
2418 sec_ptr section,
2419 arelent **relptr,
2420 asymbol **symbols)
252b5132
RH		 2421{
2422 arelent *tblptr = section->relocation;
2423 unsigned int count;
2424
2425 if (section == obj_bsssec (abfd))
2426 {
2427 *relptr = NULL;
2428 return 0;
2429 }
2430
116c20d2 2431 if (!(tblptr || NAME (aout, slurp_reloc_table) (abfd, section, symbols)))
252b5132
RH		 2432 return -1;
2433
923f08ff
AM		 2434 if (section->flags & SEC_CONSTRUCTOR)
2435 {
2436 arelent_chain *chain = section->constructor_chain;
2437 for (count = 0; count < section->reloc_count; count ++)
2438 {
2439 *relptr ++ = &chain->relent;
2440 chain = chain->next;
2441 }
252b5132 2442 }
923f08ff
AM		 2443 else
2444 {
2445 tblptr = section->relocation;
252b5132 2446
923f08ff
AM		 2447 for (count = 0; count++ < section->reloc_count; )
2448 {
2449 *relptr++ = tblptr++;
2450 }
2451 }
252b5132
RH		 2452 *relptr = 0;
2453
2454 return section->reloc_count;
2455}
2456
2457long
116c20d2 2458NAME (aout, get_reloc_upper_bound) (bfd *abfd, sec_ptr asect)
252b5132 2459{
923f08ff
AM		 2460 if (bfd_get_format (abfd) != bfd_object)
2461 {
2462 bfd_set_error (bfd_error_invalid_operation);
2463 return -1;
2464 }
f7c33884 2465
923f08ff 2466 if (asect->flags & SEC_CONSTRUCTOR)
116c20d2 2467 return sizeof (arelent *) * (asect->reloc_count + 1);
252b5132
RH		 2468
2469 if (asect == obj_datasec (abfd))
116c20d2
NC		 2470 return sizeof (arelent *)
2471 * ((exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd))
2472 + 1);
252b5132
RH		 2473
2474 if (asect == obj_textsec (abfd))
116c20d2
NC		 2475 return sizeof (arelent *)
2476 * ((exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd))
2477 + 1);
252b5132
RH		 2478
2479 if (asect == obj_bsssec (abfd))
2480 return sizeof (arelent *);
2481
2482 if (asect == obj_bsssec (abfd))
2483 return 0;
2484
2485 bfd_set_error (bfd_error_invalid_operation);
2486 return -1;
2487}
252b5132
RH		 2488\f
2489long
116c20d2 2490NAME (aout, get_symtab_upper_bound) (bfd *abfd)
252b5132 2491{
116c20d2 2492 if (!NAME (aout, slurp_symbol_table) (abfd))
252b5132
RH		 2493 return -1;
2494
2495 return (bfd_get_symcount (abfd)+1) * (sizeof (aout_symbol_type *));
2496}
2497
1725a96e 2498alent *
116c20d2
NC		 2499NAME (aout, get_lineno) (bfd *ignore_abfd ATTRIBUTE_UNUSED,
2500 asymbol *ignore_symbol ATTRIBUTE_UNUSED)
252b5132 2501{
116c20d2 2502 return NULL;
252b5132
RH		 2503}
2504
252b5132 2505void
116c20d2
NC		 2506NAME (aout, get_symbol_info) (bfd *ignore_abfd ATTRIBUTE_UNUSED,
2507 asymbol *symbol,
2508 symbol_info *ret)
252b5132
RH		 2509{
2510 bfd_symbol_info (symbol, ret);
2511
2512 if (ret->type == '?')
2513 {
923f08ff 2514 int type_code = aout_symbol (symbol)->type & 0xff;
252b5132
RH		 2515 const char *stab_name = bfd_get_stab_name (type_code);
2516 static char buf[10];
2517
2518 if (stab_name == NULL)
2519 {
e60b52c6 2520 sprintf (buf, "(%d)", type_code);
252b5132
RH		 2521 stab_name = buf;
2522 }
2523 ret->type = '-';
2524 ret->stab_type = type_code;
923f08ff
AM		 2525 ret->stab_other = (unsigned) (aout_symbol (symbol)->other & 0xff);
2526 ret->stab_desc = (unsigned) (aout_symbol (symbol)->desc & 0xffff);
252b5132
RH		 2527 ret->stab_name = stab_name;
2528 }
2529}
2530
252b5132 2531void
116c20d2
NC		 2532NAME (aout, print_symbol) (bfd *abfd,
2533 void * afile,
2534 asymbol *symbol,
2535 bfd_print_symbol_type how)
252b5132
RH		 2536{
2537 FILE *file = (FILE *)afile;
2538
923f08ff 2539 switch (how)
252b5132 2540 {
923f08ff
AM		 2541 case bfd_print_symbol_name:
2542 if (symbol->name)
2543 fprintf (file,"%s", symbol->name);
2544 break;
2545 case bfd_print_symbol_more:
2546 fprintf (file,"%4x %2x %2x",
2547 (unsigned) (aout_symbol (symbol)->desc & 0xffff),
2548 (unsigned) (aout_symbol (symbol)->other & 0xff),
2549 (unsigned) (aout_symbol (symbol)->type));
2550 break;
2551 case bfd_print_symbol_all:
2552 {
2553 const char *section_name = symbol->section->name;
252b5132 2554
116c20d2 2555 bfd_print_symbol_vandf (abfd, (void *)file, symbol);
252b5132 2556
923f08ff
AM		 2557 fprintf (file," %-5s %04x %02x %02x",
2558 section_name,
2559 (unsigned) (aout_symbol (symbol)->desc & 0xffff),
2560 (unsigned) (aout_symbol (symbol)->other & 0xff),
2561 (unsigned) (aout_symbol (symbol)->type & 0xff));
2562 if (symbol->name)
2563 fprintf (file," %s", symbol->name);
2564 }
2565 break;
252b5132 2566 }
252b5132
RH		 2567}
2568
2569/* If we don't have to allocate more than 1MB to hold the generic
2570 symbols, we use the generic minisymbol methord: it's faster, since
2571 it only translates the symbols once, not multiple times. */
2572#define MINISYM_THRESHOLD (1000000 / sizeof (asymbol))
2573
2574/* Read minisymbols. For minisymbols, we use the unmodified a.out
2575 symbols. The minisymbol_to_symbol function translates these into
2576 BFD asymbol structures. */
2577
2578long
116c20d2
NC		 2579NAME (aout, read_minisymbols) (bfd *abfd,
2580 bfd_boolean dynamic,
2581 void * *minisymsp,
2582 unsigned int *sizep)
252b5132
RH		 2583{
2584 if (dynamic)
116c20d2
NC		 2585 /* We could handle the dynamic symbols here as well, but it's
2586 easier to hand them off. */
2587 return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep);
252b5132
RH		 2588
2589 if (! aout_get_external_symbols (abfd))
2590 return -1;
2591
2592 if (obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD)
2593 return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep);
2594
116c20d2 2595 *minisymsp = (void *) obj_aout_external_syms (abfd);
252b5132
RH		 2596
2597 /* By passing the external symbols back from this routine, we are
2598 giving up control over the memory block. Clear
2599 obj_aout_external_syms, so that we do not try to free it
2600 ourselves. */
2601 obj_aout_external_syms (abfd) = NULL;
2602
2603 *sizep = EXTERNAL_NLIST_SIZE;
2604 return obj_aout_external_sym_count (abfd);
2605}
2606
2607/* Convert a minisymbol to a BFD asymbol. A minisymbol is just an
2608 unmodified a.out symbol. The SYM argument is a structure returned
2609 by bfd_make_empty_symbol, which we fill in here. */
2610
2611asymbol *
116c20d2
NC		 2612NAME (aout, minisymbol_to_symbol) (bfd *abfd,
2613 bfd_boolean dynamic,
2614 const void * minisym,
2615 asymbol *sym)
252b5132
RH		 2616{
2617 if (dynamic
2618 || obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD)
2619 return _bfd_generic_minisymbol_to_symbol (abfd, dynamic, minisym, sym);
2620
2621 memset (sym, 0, sizeof (aout_symbol_type));
2622
2623 /* We call translate_symbol_table to translate a single symbol. */
116c20d2 2624 if (! (NAME (aout, translate_symbol_table)
252b5132
RH		 2625 (abfd,
2626 (aout_symbol_type *) sym,
2627 (struct external_nlist *) minisym,
2628 (bfd_size_type) 1,
2629 obj_aout_external_strings (abfd),
2630 obj_aout_external_string_size (abfd),
b34976b6 2631 FALSE)))
252b5132
RH		 2632 return NULL;
2633
2634 return sym;
2635}
2636
f7c33884
NC		 2637/* Provided a BFD, a section and an offset into the section, calculate
2638 and return the name of the source file and the line nearest to the
2639 wanted location. */
252b5132 2640
b34976b6 2641bfd_boolean
116c20d2 2642NAME (aout, find_nearest_line) (bfd *abfd,
116c20d2 2643 asymbol **symbols,
fb167eb2 2644 asection *section,
116c20d2
NC		 2645 bfd_vma offset,
2646 const char **filename_ptr,
2647 const char **functionname_ptr,
fb167eb2
AM		 2648 unsigned int *line_ptr,
2649 unsigned int *disriminator_ptr)
252b5132 2650{
f7c33884 2651 /* Run down the file looking for the filename, function and linenumber. */
252b5132 2652 asymbol **p;
dc810e39
AM		 2653 const char *directory_name = NULL;
2654 const char *main_file_name = NULL;
2655 const char *current_file_name = NULL;
116c20d2 2656 const char *line_file_name = NULL; /* Value of current_file_name at line number. */
dc810e39 2657 const char *line_directory_name = NULL; /* Value of directory_name at line number. */
252b5132
RH		 2658 bfd_vma low_line_vma = 0;
2659 bfd_vma low_func_vma = 0;
2660 asymbol *func = 0;
dc810e39 2661 bfd_size_type filelen, funclen;
252b5132
RH		 2662 char *buf;
2663
2664 *filename_ptr = abfd->filename;
2665 *functionname_ptr = 0;
2666 *line_ptr = 0;
fb167eb2
AM		 2667 if (disriminator_ptr)
2668 *disriminator_ptr = 0;
f7c33884 2669
116c20d2 2670 if (symbols != NULL)
923f08ff
AM		 2671 {
2672 for (p = symbols; *p; p++)
2673 {
2674 aout_symbol_type *q = (aout_symbol_type *) (*p);
2675 next:
2676 switch (q->type)
2677 {
2678 case N_TEXT:
2679 /* If this looks like a file name symbol, and it comes after
2680 the line number we have found so far, but before the
2681 offset, then we have probably not found the right line
2682 number. */
2683 if (q->symbol.value <= offset
2684 && ((q->symbol.value > low_line_vma
2685 && (line_file_name != NULL
2686 || *line_ptr != 0))
2687 || (q->symbol.value > low_func_vma
2688 && func != NULL)))
2689 {
2690 const char *symname;
252b5132 2691
923f08ff
AM		 2692 symname = q->symbol.name;
2693 if (strcmp (symname + strlen (symname) - 2, ".o") == 0)
2694 {
2695 if (q->symbol.value > low_line_vma)
2696 {
2697 *line_ptr = 0;
2698 line_file_name = NULL;
2699 }
2700 if (q->symbol.value > low_func_vma)
2701 func = NULL;
2702 }
2703 }
2704 break;
252b5132 2705
923f08ff
AM		 2706 case N_SO:
2707 /* If this symbol is less than the offset, but greater than
2708 the line number we have found so far, then we have not
2709 found the right line number. */
2710 if (q->symbol.value <= offset)
2711 {
2712 if (q->symbol.value > low_line_vma)
2713 {
2714 *line_ptr = 0;
2715 line_file_name = NULL;
2716 }
2717 if (q->symbol.value > low_func_vma)
2718 func = NULL;
2719 }
252b5132 2720
923f08ff
AM		 2721 main_file_name = current_file_name = q->symbol.name;
2722 /* Look ahead to next symbol to check if that too is an N_SO. */
2723 p++;
2724 if (*p == NULL)
c3864421 2725 goto done;
923f08ff
AM		 2726 q = (aout_symbol_type *) (*p);
2727 if (q->type != (int)N_SO)
2728 goto next;
2729
2730 /* Found a second N_SO First is directory; second is filename. */
2731 directory_name = current_file_name;
2732 main_file_name = current_file_name = q->symbol.name;
2733 if (obj_textsec (abfd) != section)
2734 goto done;
2735 break;
2736 case N_SOL:
2737 current_file_name = q->symbol.name;
2738 break;
252b5132 2739
923f08ff 2740 case N_SLINE:
252b5132 2741
923f08ff
AM		 2742 case N_DSLINE:
2743 case N_BSLINE:
2744 /* We'll keep this if it resolves nearer than the one we have
2745 already. */
2746 if (q->symbol.value >= low_line_vma
2747 && q->symbol.value <= offset)
2748 {
2749 *line_ptr = q->desc;
2750 low_line_vma = q->symbol.value;
2751 line_file_name = current_file_name;
2752 line_directory_name = directory_name;
2753 }
2754 break;
2755 case N_FUN:
2756 {
f7c33884 2757 /* We'll keep this if it is nearer than the one we have already. */
923f08ff 2758 if (q->symbol.value >= low_func_vma &&
f7c33884
NC		 2759 q->symbol.value <= offset)
2760 {
2761 low_func_vma = q->symbol.value;
2762 func = (asymbol *)q;
2763 }
923f08ff
AM		 2764 else if (q->symbol.value > offset)
2765 goto done;
2766 }
2767 break;
2768 }
252b5132 2769 }
252b5132 2770 }
252b5132
RH		 2771
2772 done:
2773 if (*line_ptr != 0)
2774 {
2775 main_file_name = line_file_name;
2776 directory_name = line_directory_name;
2777 }
2778
2779 if (main_file_name == NULL
5af11cab 2780 || IS_ABSOLUTE_PATH (main_file_name)
252b5132
RH		 2781 || directory_name == NULL)
2782 filelen = 0;
2783 else
2784 filelen = strlen (directory_name) + strlen (main_file_name);
f7c33884 2785
252b5132
RH		 2786 if (func == NULL)
2787 funclen = 0;
2788 else
2789 funclen = strlen (bfd_asymbol_name (func));
2790
2791 if (adata (abfd).line_buf != NULL)
2792 free (adata (abfd).line_buf);
f7c33884 2793
252b5132
RH		 2794 if (filelen + funclen == 0)
2795 adata (abfd).line_buf = buf = NULL;
2796 else
2797 {
a50b1753 2798 buf = (char *) bfd_malloc (filelen + funclen + 3);
252b5132
RH		 2799 adata (abfd).line_buf = buf;
2800 if (buf == NULL)
b34976b6 2801 return FALSE;
252b5132
RH		 2802 }
2803
2804 if (main_file_name != NULL)
2805 {
5af11cab 2806 if (IS_ABSOLUTE_PATH (main_file_name) || directory_name == NULL)
252b5132
RH		 2807 *filename_ptr = main_file_name;
2808 else
2809 {
2810 sprintf (buf, "%s%s", directory_name, main_file_name);
2811 *filename_ptr = buf;
2812 buf += filelen + 1;
2813 }
2814 }
2815
2816 if (func)
2817 {
2818 const char *function = func->name;
dc810e39 2819 char *colon;
252b5132
RH		 2820
2821 /* The caller expects a symbol name. We actually have a
2822 function name, without the leading underscore. Put the
2823 underscore back in, so that the caller gets a symbol name. */
2824 if (bfd_get_symbol_leading_char (abfd) == '\0')
2825 strcpy (buf, function);
2826 else
2827 {
2828 buf[0] = bfd_get_symbol_leading_char (abfd);
2829 strcpy (buf + 1, function);
2830 }
f7c33884 2831 /* Have to remove : stuff. */
dc810e39
AM		 2832 colon = strchr (buf, ':');
2833 if (colon != NULL)
2834 *colon = '\0';
252b5132
RH		 2835 *functionname_ptr = buf;
2836 }
2837
b34976b6 2838 return TRUE;
252b5132
RH		 2839}
2840
252b5132 2841int
a6b96beb
AM		 2842NAME (aout, sizeof_headers) (bfd *abfd,
2843 struct bfd_link_info *info ATTRIBUTE_UNUSED)
252b5132 2844{
923f08ff 2845 return adata (abfd).exec_bytes_size;
252b5132
RH		 2846}
2847
2848/* Free all information we have cached for this BFD. We can always
2849 read it again later if we need it. */
2850
b34976b6 2851bfd_boolean
116c20d2 2852NAME (aout, bfd_free_cached_info) (bfd *abfd)
252b5132
RH		 2853{
2854 asection *o;
2855
920581c5
L		 2856 if (bfd_get_format (abfd) != bfd_object
2857 || abfd->tdata.aout_data == NULL)
b34976b6 2858 return TRUE;
252b5132
RH		 2859
2860#define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; }
2861 BFCI_FREE (obj_aout_symbols (abfd));
2862#ifdef USE_MMAP
2863 obj_aout_external_syms (abfd) = 0;
2864 bfd_free_window (&obj_aout_sym_window (abfd));
2865 bfd_free_window (&obj_aout_string_window (abfd));
2866 obj_aout_external_strings (abfd) = 0;
2867#else
2868 BFCI_FREE (obj_aout_external_syms (abfd));
2869 BFCI_FREE (obj_aout_external_strings (abfd));
2870#endif
116c20d2 2871 for (o = abfd->sections; o != NULL; o = o->next)
252b5132
RH		 2872 BFCI_FREE (o->relocation);
2873#undef BFCI_FREE
2874
b34976b6 2875 return TRUE;
252b5132
RH		 2876}
2877\f
2878/* a.out link code. */
2879
252b5132
RH		 2880/* Routine to create an entry in an a.out link hash table. */
2881
2882struct bfd_hash_entry *
116c20d2
NC		 2883NAME (aout, link_hash_newfunc) (struct bfd_hash_entry *entry,
2884 struct bfd_hash_table *table,
2885 const char *string)
252b5132
RH		 2886{
2887 struct aout_link_hash_entry *ret = (struct aout_link_hash_entry *) entry;
2888
2889 /* Allocate the structure if it has not already been allocated by a
2890 subclass. */
116c20d2 2891 if (ret == NULL)
a50b1753
NC		 2892 ret = (struct aout_link_hash_entry *) bfd_hash_allocate (table,
2893 sizeof (* ret));
116c20d2
NC		 2894 if (ret == NULL)
2895 return NULL;
252b5132
RH		 2896
2897 /* Call the allocation method of the superclass. */
2898 ret = ((struct aout_link_hash_entry *)
2899 _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2900 table, string));
2901 if (ret)
2902 {
2903 /* Set local fields. */
b34976b6 2904 ret->written = FALSE;
252b5132
RH		 2905 ret->indx = -1;
2906 }
2907
2908 return (struct bfd_hash_entry *) ret;
2909}
2910
2911/* Initialize an a.out link hash table. */
2912
b34976b6 2913bfd_boolean
116c20d2
NC		 2914NAME (aout, link_hash_table_init) (struct aout_link_hash_table *table,
2915 bfd *abfd,
2916 struct bfd_hash_entry *(*newfunc)
2917 (struct bfd_hash_entry *, struct bfd_hash_table *,
66eb6687
AM		 2918 const char *),
2919 unsigned int entsize)
252b5132 2920{
66eb6687 2921 return _bfd_link_hash_table_init (&table->root, abfd, newfunc, entsize);
252b5132
RH		 2922}
2923
2924/* Create an a.out link hash table. */
2925
2926struct bfd_link_hash_table *
116c20d2 2927NAME (aout, link_hash_table_create) (bfd *abfd)
252b5132
RH		 2928{
2929 struct aout_link_hash_table *ret;
116c20d2 2930 bfd_size_type amt = sizeof (* ret);
252b5132 2931
a50b1753 2932 ret = (struct aout_link_hash_table *) bfd_malloc (amt);
252b5132 2933 if (ret == NULL)
116c20d2 2934 return NULL;
5ed6aba4 2935
66eb6687
AM		 2936 if (!NAME (aout, link_hash_table_init) (ret, abfd,
2937 NAME (aout, link_hash_newfunc),
2938 sizeof (struct aout_link_hash_entry)))
252b5132
RH		 2939 {
2940 free (ret);
116c20d2 2941 return NULL;
252b5132
RH		 2942 }
2943 return &ret->root;
2944}
2945
116c20d2 2946/* Add all symbols from an object file to the hash table. */
252b5132 2947
b34976b6 2948static bfd_boolean
116c20d2 2949aout_link_add_symbols (bfd *abfd, struct bfd_link_info *info)
252b5132 2950{
116c20d2
NC		 2951 bfd_boolean (*add_one_symbol)
2952 (struct bfd_link_info *, bfd *, const char *, flagword, asection *,
2953 bfd_vma, const char *, bfd_boolean, bfd_boolean,
2954 struct bfd_link_hash_entry **);
2955 struct external_nlist *syms;
2956 bfd_size_type sym_count;
2957 char *strings;
2958 bfd_boolean copy;
2959 struct aout_link_hash_entry **sym_hash;
2960 struct external_nlist *p;
2961 struct external_nlist *pend;
2962 bfd_size_type amt;
252b5132 2963
116c20d2
NC		 2964 syms = obj_aout_external_syms (abfd);
2965 sym_count = obj_aout_external_sym_count (abfd);
2966 strings = obj_aout_external_strings (abfd);
2967 if (info->keep_memory)
2968 copy = FALSE;
2969 else
2970 copy = TRUE;
252b5132 2971
116c20d2 2972 if (aout_backend_info (abfd)->add_dynamic_symbols != NULL)
252b5132 2973 {
116c20d2
NC		 2974 if (! ((*aout_backend_info (abfd)->add_dynamic_symbols)
2975 (abfd, info, &syms, &sym_count, &strings)))
b34976b6 2976 return FALSE;
252b5132
RH		 2977 }
2978
20c6e70e
MS		 2979 if (sym_count == 0)
2980 return TRUE; /* Nothing to do. */
2981
116c20d2
NC		 2982 /* We keep a list of the linker hash table entries that correspond
2983 to particular symbols. We could just look them up in the hash
2984 table, but keeping the list is more efficient. Perhaps this
2985 should be conditional on info->keep_memory. */
2986 amt = sym_count * sizeof (struct aout_link_hash_entry *);
a50b1753 2987 sym_hash = (struct aout_link_hash_entry **) bfd_alloc (abfd, amt);
20c6e70e 2988 if (sym_hash == NULL)
116c20d2
NC		 2989 return FALSE;
2990 obj_aout_sym_hashes (abfd) = sym_hash;
252b5132 2991
116c20d2
NC		 2992 add_one_symbol = aout_backend_info (abfd)->add_one_symbol;
2993 if (add_one_symbol == NULL)
2994 add_one_symbol = _bfd_generic_link_add_one_symbol;
252b5132 2995
116c20d2
NC		 2996 p = syms;
2997 pend = p + sym_count;
2998 for (; p < pend; p++, sym_hash++)
252b5132 2999 {
116c20d2 3000 int type;
252b5132 3001 const char *name;
116c20d2
NC		 3002 bfd_vma value;
3003 asection *section;
3004 flagword flags;
3005 const char *string;
252b5132 3006
116c20d2 3007 *sym_hash = NULL;
252b5132 3008
116c20d2 3009 type = H_GET_8 (abfd, p->e_type);
252b5132 3010
116c20d2
NC		 3011 /* Ignore debugging symbols. */
3012 if ((type & N_STAB) != 0)
3013 continue;
252b5132 3014
e517df3d
NC		 3015 /* PR 19629: Corrupt binaries can contain illegal string offsets. */
3016 if (GET_WORD (abfd, p->e_strx) > obj_aout_external_string_size (abfd))
3017 return FALSE;
116c20d2 3018 name = strings + GET_WORD (abfd, p->e_strx);
e517df3d 3019
116c20d2
NC		 3020 value = GET_WORD (abfd, p->e_value);
3021 flags = BSF_GLOBAL;
3022 string = NULL;
3023 switch (type)
252b5132 3024 {
116c20d2
NC		 3025 default:
3026 abort ();
f7c33884 3027
116c20d2
NC		 3028 case N_UNDF:
3029 case N_ABS:
3030 case N_TEXT:
3031 case N_DATA:
3032 case N_BSS:
3033 case N_FN_SEQ:
3034 case N_COMM:
3035 case N_SETV:
3036 case N_FN:
3037 /* Ignore symbols that are not externally visible. */
3038 continue;
3039 case N_INDR:
3040 /* Ignore local indirect symbol. */
3041 ++p;
3042 ++sym_hash;
3043 continue;
252b5132 3044
116c20d2
NC		 3045 case N_UNDF | N_EXT:
3046 if (value == 0)
f7c33884 3047 {
116c20d2
NC		 3048 section = bfd_und_section_ptr;
3049 flags = 0;
252b5132
RH		 3050 }
3051 else
3052 section = bfd_com_section_ptr;
3053 break;
3054 case N_ABS | N_EXT:
3055 section = bfd_abs_section_ptr;
3056 break;
3057 case N_TEXT | N_EXT:
3058 section = obj_textsec (abfd);
3059 value -= bfd_get_section_vma (abfd, section);
3060 break;
3061 case N_DATA | N_EXT:
3062 case N_SETV | N_EXT:
3063 /* Treat N_SETV symbols as N_DATA symbol; see comment in
3064 translate_from_native_sym_flags. */
3065 section = obj_datasec (abfd);
3066 value -= bfd_get_section_vma (abfd, section);
3067 break;
3068 case N_BSS | N_EXT:
3069 section = obj_bsssec (abfd);
3070 value -= bfd_get_section_vma (abfd, section);
3071 break;
3072 case N_INDR | N_EXT:
3073 /* An indirect symbol. The next symbol is the symbol
3074 which this one really is. */
3075 BFD_ASSERT (p + 1 < pend);
3076 ++p;
e517df3d
NC		 3077 /* PR 19629: Corrupt binaries can contain illegal string offsets. */
3078 if (GET_WORD (abfd, p->e_strx) > obj_aout_external_string_size (abfd))
3079 return FALSE;
252b5132
RH		 3080 string = strings + GET_WORD (abfd, p->e_strx);
3081 section = bfd_ind_section_ptr;
3082 flags |= BSF_INDIRECT;
3083 break;
3084 case N_COMM | N_EXT:
3085 section = bfd_com_section_ptr;
3086 break;
3087 case N_SETA: case N_SETA | N_EXT:
3088 section = bfd_abs_section_ptr;
3089 flags |= BSF_CONSTRUCTOR;
3090 break;
3091 case N_SETT: case N_SETT | N_EXT:
3092 section = obj_textsec (abfd);
3093 flags |= BSF_CONSTRUCTOR;
3094 value -= bfd_get_section_vma (abfd, section);
3095 break;
3096 case N_SETD: case N_SETD | N_EXT:
3097 section = obj_datasec (abfd);
3098 flags |= BSF_CONSTRUCTOR;
3099 value -= bfd_get_section_vma (abfd, section);
3100 break;
3101 case N_SETB: case N_SETB | N_EXT:
3102 section = obj_bsssec (abfd);
3103 flags |= BSF_CONSTRUCTOR;
3104 value -= bfd_get_section_vma (abfd, section);
3105 break;
3106 case N_WARNING:
3107 /* A warning symbol. The next symbol is the one to warn
9f400ee9
HPN		 3108 about. If there is no next symbol, just look away. */
3109 if (p + 1 >= pend)
3110 return TRUE;
252b5132
RH		 3111 ++p;
3112 string = name;
e517df3d
NC		 3113 /* PR 19629: Corrupt binaries can contain illegal string offsets. */
3114 if (GET_WORD (abfd, p->e_strx) > obj_aout_external_string_size (abfd))
3115 return FALSE;
252b5132
RH		 3116 name = strings + GET_WORD (abfd, p->e_strx);
3117 section = bfd_und_section_ptr;
3118 flags |= BSF_WARNING;
3119 break;
3120 case N_WEAKU:
3121 section = bfd_und_section_ptr;
3122 flags = BSF_WEAK;
3123 break;
3124 case N_WEAKA:
3125 section = bfd_abs_section_ptr;
3126 flags = BSF_WEAK;
3127 break;
3128 case N_WEAKT:
3129 section = obj_textsec (abfd);
3130 value -= bfd_get_section_vma (abfd, section);
3131 flags = BSF_WEAK;
3132 break;
3133 case N_WEAKD:
3134 section = obj_datasec (abfd);
3135 value -= bfd_get_section_vma (abfd, section);
3136 flags = BSF_WEAK;
3137 break;
3138 case N_WEAKB:
3139 section = obj_bsssec (abfd);
3140 value -= bfd_get_section_vma (abfd, section);
3141 flags = BSF_WEAK;
3142 break;
3143 }
3144
3145 if (! ((*add_one_symbol)
b34976b6 3146 (info, abfd, name, flags, section, value, string, copy, FALSE,
252b5132 3147 (struct bfd_link_hash_entry **) sym_hash)))
b34976b6 3148 return FALSE;
252b5132
RH		 3149
3150 /* Restrict the maximum alignment of a common symbol based on
3151 the architecture, since a.out has no way to represent
3152 alignment requirements of a section in a .o file. FIXME:
3153 This isn't quite right: it should use the architecture of the
3154 output file, not the input files. */
3155 if ((*sym_hash)->root.type == bfd_link_hash_common
3156 && ((*sym_hash)->root.u.c.p->alignment_power >
3157 bfd_get_arch_info (abfd)->section_align_power))
3158 (*sym_hash)->root.u.c.p->alignment_power =
3159 bfd_get_arch_info (abfd)->section_align_power;
3160
3161 /* If this is a set symbol, and we are not building sets, then
3162 it is possible for the hash entry to not have been set. In
3163 such a case, treat the symbol as not globally defined. */
3164 if ((*sym_hash)->root.type == bfd_link_hash_new)
3165 {
3166 BFD_ASSERT ((flags & BSF_CONSTRUCTOR) != 0);
3167 *sym_hash = NULL;
3168 }
3169
3170 if (type == (N_INDR | N_EXT) || type == N_WARNING)
3171 ++sym_hash;
3172 }
3173
b34976b6 3174 return TRUE;
252b5132 3175}
252b5132 3176
116c20d2
NC		 3177/* Free up the internal symbols read from an a.out file. */
3178
3179static bfd_boolean
3180aout_link_free_symbols (bfd *abfd)
252b5132 3181{
116c20d2
NC		 3182 if (obj_aout_external_syms (abfd) != NULL)
3183 {
3184#ifdef USE_MMAP
3185 bfd_free_window (&obj_aout_sym_window (abfd));
3186#else
3187 free ((void *) obj_aout_external_syms (abfd));
3188#endif
3189 obj_aout_external_syms (abfd) = NULL;
3190 }
3191 if (obj_aout_external_strings (abfd) != NULL)
3192 {
3193#ifdef USE_MMAP
3194 bfd_free_window (&obj_aout_string_window (abfd));
3195#else
3196 free ((void *) obj_aout_external_strings (abfd));
3197#endif
3198 obj_aout_external_strings (abfd) = NULL;
3199 }
3200 return TRUE;
3201}
252b5132 3202
116c20d2 3203/* Add symbols from an a.out object file. */
252b5132 3204
116c20d2
NC		 3205static bfd_boolean
3206aout_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info)
252b5132 3207{
116c20d2
NC		 3208 if (! aout_get_external_symbols (abfd))
3209 return FALSE;
3210 if (! aout_link_add_symbols (abfd, info))
3211 return FALSE;
3212 if (! info->keep_memory)
3213 {
3214 if (! aout_link_free_symbols (abfd))
3215 return FALSE;
3216 }
3217 return TRUE;
3218}
252b5132 3219
116c20d2
NC		 3220/* Look through the internal symbols to see if this object file should
3221 be included in the link. We should include this object file if it
3222 defines any symbols which are currently undefined. If this object
3223 file defines a common symbol, then we may adjust the size of the
3224 known symbol but we do not include the object file in the link
3225 (unless there is some other reason to include it). */
252b5132 3226
116c20d2
NC		 3227static bfd_boolean
3228aout_link_check_ar_symbols (bfd *abfd,
3229 struct bfd_link_info *info,
5d3236ee
DK		 3230 bfd_boolean *pneeded,
3231 bfd **subsbfd)
252b5132 3232{
116c20d2
NC		 3233 struct external_nlist *p;
3234 struct external_nlist *pend;
3235 char *strings;
252b5132 3236
116c20d2 3237 *pneeded = FALSE;
252b5132 3238
116c20d2
NC		 3239 /* Look through all the symbols. */
3240 p = obj_aout_external_syms (abfd);
3241 pend = p + obj_aout_external_sym_count (abfd);
3242 strings = obj_aout_external_strings (abfd);
3243 for (; p < pend; p++)
3244 {
3245 int type = H_GET_8 (abfd, p->e_type);
3246 const char *name;
3247 struct bfd_link_hash_entry *h;
252b5132 3248
116c20d2
NC		 3249 /* Ignore symbols that are not externally visible. This is an
3250 optimization only, as we check the type more thoroughly
3251 below. */
3252 if (((type & N_EXT) == 0
3253 || (type & N_STAB) != 0
3254 || type == N_FN)
3255 && type != N_WEAKA
3256 && type != N_WEAKT
3257 && type != N_WEAKD
3258 && type != N_WEAKB)
3259 {
3260 if (type == N_WARNING
3261 || type == N_INDR)
3262 ++p;
3263 continue;
3264 }
3265
3266 name = strings + GET_WORD (abfd, p->e_strx);
3267 h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE);
3268
3269 /* We are only interested in symbols that are currently
3270 undefined or common. */
3271 if (h == NULL
3272 || (h->type != bfd_link_hash_undefined
3273 && h->type != bfd_link_hash_common))
3274 {
3275 if (type == (N_INDR | N_EXT))
3276 ++p;
3277 continue;
3278 }
3279
3280 if (type == (N_TEXT | N_EXT)
3281 || type == (N_DATA | N_EXT)
3282 || type == (N_BSS | N_EXT)
3283 || type == (N_ABS | N_EXT)
3284 || type == (N_INDR | N_EXT))
3285 {
3286 /* This object file defines this symbol. We must link it
3287 in. This is true regardless of whether the current
3288 definition of the symbol is undefined or common.
3289
3290 If the current definition is common, we have a case in
3291 which we have already seen an object file including:
3292 int a;
3293 and this object file from the archive includes:
3294 int a = 5;
3295 In such a case, whether to include this object is target
3296 dependant for backward compatibility.
3297
3298 FIXME: The SunOS 4.1.3 linker will pull in the archive
3299 element if the symbol is defined in the .data section,
3300 but not if it is defined in the .text section. That
3301 seems a bit crazy to me, and it has not been implemented
3302 yet. However, it might be correct. */
3303 if (h->type == bfd_link_hash_common)
3304 {
3305 int skip = 0;
3306
f88dc410 3307 switch (info->common_skip_ar_symbols)
116c20d2
NC		 3308 {
3309 case bfd_link_common_skip_text:
3310 skip = (type == (N_TEXT | N_EXT));
3311 break;
3312 case bfd_link_common_skip_data:
3313 skip = (type == (N_DATA | N_EXT));
3314 break;
3315 default:
3316 case bfd_link_common_skip_all:
3317 skip = 1;
3318 break;
3319 }
3320
3321 if (skip)
3322 continue;
3323 }
3324
0e144ba7
AM		 3325 if (!(*info->callbacks
3326 ->add_archive_element) (info, abfd, name, subsbfd))
116c20d2
NC		 3327 return FALSE;
3328 *pneeded = TRUE;
3329 return TRUE;
3330 }
3331
3332 if (type == (N_UNDF | N_EXT))
3333 {
3334 bfd_vma value;
3335
3336 value = GET_WORD (abfd, p->e_value);
3337 if (value != 0)
3338 {
3339 /* This symbol is common in the object from the archive
3340 file. */
3341 if (h->type == bfd_link_hash_undefined)
3342 {
3343 bfd *symbfd;
3344 unsigned int power;
3345
3346 symbfd = h->u.undef.abfd;
3347 if (symbfd == NULL)
3348 {
3349 /* This symbol was created as undefined from
3350 outside BFD. We assume that we should link
3351 in the object file. This is done for the -u
3352 option in the linker. */
0e144ba7
AM		 3353 if (!(*info->callbacks
3354 ->add_archive_element) (info, abfd, name, subsbfd))
116c20d2
NC		 3355 return FALSE;
3356 *pneeded = TRUE;
3357 return TRUE;
3358 }
3359 /* Turn the current link symbol into a common
3360 symbol. It is already on the undefs list. */
3361 h->type = bfd_link_hash_common;
a50b1753 3362 h->u.c.p = (struct bfd_link_hash_common_entry *)
0e144ba7
AM		 3363 bfd_hash_allocate (&info->hash->table,
3364 sizeof (struct bfd_link_hash_common_entry));
116c20d2
NC		 3365 if (h->u.c.p == NULL)
3366 return FALSE;
3367
3368 h->u.c.size = value;
3369
3370 /* FIXME: This isn't quite right. The maximum
3371 alignment of a common symbol should be set by the
3372 architecture of the output file, not of the input
3373 file. */
3374 power = bfd_log2 (value);
3375 if (power > bfd_get_arch_info (abfd)->section_align_power)
3376 power = bfd_get_arch_info (abfd)->section_align_power;
3377 h->u.c.p->alignment_power = power;
3378
3379 h->u.c.p->section = bfd_make_section_old_way (symbfd,
3380 "COMMON");
3381 }
3382 else
3383 {
3384 /* Adjust the size of the common symbol if
3385 necessary. */
3386 if (value > h->u.c.size)
3387 h->u.c.size = value;
3388 }
3389 }
3390 }
3391
3392 if (type == N_WEAKA
3393 || type == N_WEAKT
3394 || type == N_WEAKD
3395 || type == N_WEAKB)
3396 {
3397 /* This symbol is weak but defined. We must pull it in if
3398 the current link symbol is undefined, but we don't want
3399 it if the current link symbol is common. */
3400 if (h->type == bfd_link_hash_undefined)
3401 {
0e144ba7
AM		 3402 if (!(*info->callbacks
3403 ->add_archive_element) (info, abfd, name, subsbfd))
116c20d2
NC		 3404 return FALSE;
3405 *pneeded = TRUE;
3406 return TRUE;
3407 }
3408 }
3409 }
3410
3411 /* We do not need this object file. */
3412 return TRUE;
3413}
3414/* Check a single archive element to see if we need to include it in
3415 the link. *PNEEDED is set according to whether this element is
3416 needed in the link or not. This is called from
3417 _bfd_generic_link_add_archive_symbols. */
3418
3419static bfd_boolean
3420aout_link_check_archive_element (bfd *abfd,
3421 struct bfd_link_info *info,
13e570f8
AM		 3422 struct bfd_link_hash_entry *h ATTRIBUTE_UNUSED,
3423 const char *name ATTRIBUTE_UNUSED,
116c20d2
NC		 3424 bfd_boolean *pneeded)
3425{
0e144ba7
AM		 3426 bfd *oldbfd;
3427 bfd_boolean needed;
5d3236ee 3428
0e144ba7 3429 if (!aout_get_external_symbols (abfd))
116c20d2
NC		 3430 return FALSE;
3431
0e144ba7
AM		 3432 oldbfd = abfd;
3433 if (!aout_link_check_ar_symbols (abfd, info, pneeded, &abfd))
116c20d2
NC		 3434 return FALSE;
3435
0e144ba7
AM		 3436 needed = *pneeded;
3437 if (needed)
116c20d2 3438 {
5d3236ee
DK		 3439 /* Potentially, the add_archive_element hook may have set a
3440 substitute BFD for us. */
0e144ba7
AM		 3441 if (abfd != oldbfd)
3442 {
3443 if (!info->keep_memory
3444 && !aout_link_free_symbols (oldbfd))
3445 return FALSE;
3446 if (!aout_get_external_symbols (abfd))
3447 return FALSE;
3448 }
3449 if (!aout_link_add_symbols (abfd, info))
116c20d2
NC		 3450 return FALSE;
3451 }
3452
0e144ba7 3453 if (!info->keep_memory || !needed)
116c20d2 3454 {
0e144ba7 3455 if (!aout_link_free_symbols (abfd))
116c20d2
NC		 3456 return FALSE;
3457 }
3458
3459 return TRUE;
3460}
3461
3462/* Given an a.out BFD, add symbols to the global hash table as
3463 appropriate. */
3464
3465bfd_boolean
3466NAME (aout, link_add_symbols) (bfd *abfd, struct bfd_link_info *info)
3467{
3468 switch (bfd_get_format (abfd))
3469 {
3470 case bfd_object:
3471 return aout_link_add_object_symbols (abfd, info);
3472 case bfd_archive:
3473 return _bfd_generic_link_add_archive_symbols
3474 (abfd, info, aout_link_check_archive_element);
3475 default:
3476 bfd_set_error (bfd_error_wrong_format);
3477 return FALSE;
3478 }
3479}
3480\f
3481/* A hash table used for header files with N_BINCL entries. */
3482
3483struct aout_link_includes_table
3484{
3485 struct bfd_hash_table root;
3486};
3487
3488/* A linked list of totals that we have found for a particular header
3489 file. */
3490
3491struct aout_link_includes_totals
3492{
3493 struct aout_link_includes_totals *next;
3494 bfd_vma total;
3495};
3496
3497/* An entry in the header file hash table. */
3498
3499struct aout_link_includes_entry
3500{
3501 struct bfd_hash_entry root;
3502 /* List of totals we have found for this file. */
3503 struct aout_link_includes_totals *totals;
3504};
3505
3506/* Look up an entry in an the header file hash table. */
3507
3508#define aout_link_includes_lookup(table, string, create, copy) \
3509 ((struct aout_link_includes_entry *) \
3510 bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
3511
3512/* During the final link step we need to pass around a bunch of
3513 information, so we do it in an instance of this structure. */
3514
3515struct aout_final_link_info
3516{
3517 /* General link information. */
3518 struct bfd_link_info *info;
3519 /* Output bfd. */
252b5132
RH		 3520 bfd *output_bfd;
3521 /* Reloc file positions. */
3522 file_ptr treloff, dreloff;
3523 /* File position of symbols. */
3524 file_ptr symoff;
3525 /* String table. */
3526 struct bfd_strtab_hash *strtab;
3527 /* Header file hash table. */
3528 struct aout_link_includes_table includes;
3529 /* A buffer large enough to hold the contents of any section. */
3530 bfd_byte *contents;
3531 /* A buffer large enough to hold the relocs of any section. */
116c20d2 3532 void * relocs;
252b5132
RH		 3533 /* A buffer large enough to hold the symbol map of any input BFD. */
3534 int *symbol_map;
3535 /* A buffer large enough to hold output symbols of any input BFD. */
3536 struct external_nlist *output_syms;
3537};
3538
252b5132
RH		 3539/* The function to create a new entry in the header file hash table. */
3540
3541static struct bfd_hash_entry *
116c20d2
NC		 3542aout_link_includes_newfunc (struct bfd_hash_entry *entry,
3543 struct bfd_hash_table *table,
3544 const char *string)
252b5132
RH		 3545{
3546 struct aout_link_includes_entry *ret =
3547 (struct aout_link_includes_entry *) entry;
3548
3549 /* Allocate the structure if it has not already been allocated by a
3550 subclass. */
116c20d2 3551 if (ret == NULL)
a50b1753
NC		 3552 ret = (struct aout_link_includes_entry *)
3553 bfd_hash_allocate (table, sizeof (* ret));
116c20d2
NC		 3554 if (ret == NULL)
3555 return NULL;
252b5132
RH		 3556
3557 /* Call the allocation method of the superclass. */
3558 ret = ((struct aout_link_includes_entry *)
3559 bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string));
3560 if (ret)
3561 {
3562 /* Set local fields. */
3563 ret->totals = NULL;
3564 }
3565
3566 return (struct bfd_hash_entry *) ret;
3567}
3568
116c20d2
NC		 3569/* Write out a symbol that was not associated with an a.out input
3570 object. */
252b5132 3571
116c20d2 3572static bfd_boolean
7686d77d 3573aout_link_write_other_symbol (struct bfd_hash_entry *bh, void *data)
252b5132 3574{
7686d77d 3575 struct aout_link_hash_entry *h = (struct aout_link_hash_entry *) bh;
57402f1e 3576 struct aout_final_link_info *flaginfo = (struct aout_final_link_info *) data;
116c20d2
NC		 3577 bfd *output_bfd;
3578 int type;
3579 bfd_vma val;
3580 struct external_nlist outsym;
3581 bfd_size_type indx;
3582 bfd_size_type amt;
252b5132 3583
116c20d2
NC		 3584 if (h->root.type == bfd_link_hash_warning)
3585 {
3586 h = (struct aout_link_hash_entry *) h->root.u.i.link;
3587 if (h->root.type == bfd_link_hash_new)
3588 return TRUE;
3589 }
252b5132 3590
57402f1e 3591 output_bfd = flaginfo->output_bfd;
252b5132 3592
116c20d2 3593 if (aout_backend_info (output_bfd)->write_dynamic_symbol != NULL)
252b5132 3594 {
116c20d2 3595 if (! ((*aout_backend_info (output_bfd)->write_dynamic_symbol)
57402f1e 3596 (output_bfd, flaginfo->info, h)))
252b5132 3597 {
116c20d2
NC		 3598 /* FIXME: No way to handle errors. */
3599 abort ();
252b5132 3600 }
116c20d2 3601 }
252b5132 3602
116c20d2
NC		 3603 if (h->written)
3604 return TRUE;
252b5132 3605
116c20d2 3606 h->written = TRUE;
252b5132 3607
116c20d2
NC		 3608 /* An indx of -2 means the symbol must be written. */
3609 if (h->indx != -2
57402f1e
NC		 3610 && (flaginfo->info->strip == strip_all
3611 || (flaginfo->info->strip == strip_some
3612 && bfd_hash_lookup (flaginfo->info->keep_hash, h->root.root.string,
116c20d2
NC		 3613 FALSE, FALSE) == NULL)))
3614 return TRUE;
252b5132 3615
116c20d2 3616 switch (h->root.type)
252b5132 3617 {
116c20d2
NC		 3618 default:
3619 case bfd_link_hash_warning:
3620 abort ();
3621 /* Avoid variable not initialized warnings. */
3622 return TRUE;
3623 case bfd_link_hash_new:
3624 /* This can happen for set symbols when sets are not being
3625 built. */
3626 return TRUE;
3627 case bfd_link_hash_undefined:
3628 type = N_UNDF | N_EXT;
3629 val = 0;
3630 break;
3631 case bfd_link_hash_defined:
3632 case bfd_link_hash_defweak:
3633 {
3634 asection *sec;
252b5132 3635
116c20d2
NC		 3636 sec = h->root.u.def.section->output_section;
3637 BFD_ASSERT (bfd_is_abs_section (sec)
3638 || sec->owner == output_bfd);
3639 if (sec == obj_textsec (output_bfd))
3640 type = h->root.type == bfd_link_hash_defined ? N_TEXT : N_WEAKT;
3641 else if (sec == obj_datasec (output_bfd))
3642 type = h->root.type == bfd_link_hash_defined ? N_DATA : N_WEAKD;
3643 else if (sec == obj_bsssec (output_bfd))
3644 type = h->root.type == bfd_link_hash_defined ? N_BSS : N_WEAKB;
3645 else
3646 type = h->root.type == bfd_link_hash_defined ? N_ABS : N_WEAKA;
3647 type |= N_EXT;
3648 val = (h->root.u.def.value
3649 + sec->vma
3650 + h->root.u.def.section->output_offset);
3651 }
3652 break;
3653 case bfd_link_hash_common:
3654 type = N_UNDF | N_EXT;
3655 val = h->root.u.c.size;
3656 break;
3657 case bfd_link_hash_undefweak:
3658 type = N_WEAKU;
3659 val = 0;
c38eb2a6 3660 break;
116c20d2
NC		 3661 case bfd_link_hash_indirect:
3662 /* We ignore these symbols, since the indirected symbol is
3663 already in the hash table. */
3664 return TRUE;
3665 }
252b5132 3666
116c20d2
NC		 3667 H_PUT_8 (output_bfd, type, outsym.e_type);
3668 H_PUT_8 (output_bfd, 0, outsym.e_other);
3669 H_PUT_16 (output_bfd, 0, outsym.e_desc);
57402f1e 3670 indx = add_to_stringtab (output_bfd, flaginfo->strtab, h->root.root.string,
116c20d2
NC		 3671 FALSE);
3672 if (indx == - (bfd_size_type) 1)
3673 /* FIXME: No way to handle errors. */
3674 abort ();
252b5132 3675
116c20d2
NC		 3676 PUT_WORD (output_bfd, indx, outsym.e_strx);
3677 PUT_WORD (output_bfd, val, outsym.e_value);
252b5132 3678
116c20d2 3679 amt = EXTERNAL_NLIST_SIZE;
57402f1e 3680 if (bfd_seek (output_bfd, flaginfo->symoff, SEEK_SET) != 0
116c20d2
NC		 3681 || bfd_bwrite ((void *) &outsym, amt, output_bfd) != amt)
3682 /* FIXME: No way to handle errors. */
3683 abort ();
252b5132 3684
57402f1e 3685 flaginfo->symoff += EXTERNAL_NLIST_SIZE;
116c20d2
NC		 3686 h->indx = obj_aout_external_sym_count (output_bfd);
3687 ++obj_aout_external_sym_count (output_bfd);
252b5132 3688
116c20d2
NC		 3689 return TRUE;
3690}
252b5132 3691
116c20d2 3692/* Handle a link order which is supposed to generate a reloc. */
252b5132 3693
116c20d2 3694static bfd_boolean
57402f1e 3695aout_link_reloc_link_order (struct aout_final_link_info *flaginfo,
116c20d2
NC		 3696 asection *o,
3697 struct bfd_link_order *p)
3698{
3699 struct bfd_link_order_reloc *pr;
3700 int r_index;
3701 int r_extern;
3702 reloc_howto_type *howto;
3703 file_ptr *reloff_ptr = NULL;
3704 struct reloc_std_external srel;
3705 struct reloc_ext_external erel;
3706 void * rel_ptr;
3707 bfd_size_type amt;
252b5132 3708
116c20d2 3709 pr = p->u.reloc.p;
252b5132 3710
116c20d2
NC		 3711 if (p->type == bfd_section_reloc_link_order)
3712 {
3713 r_extern = 0;
3714 if (bfd_is_abs_section (pr->u.section))
3715 r_index = N_ABS | N_EXT;
3716 else
3717 {
57402f1e 3718 BFD_ASSERT (pr->u.section->owner == flaginfo->output_bfd);
116c20d2
NC		 3719 r_index = pr->u.section->target_index;
3720 }
3721 }
3722 else
3723 {
3724 struct aout_link_hash_entry *h;
252b5132 3725
116c20d2
NC		 3726 BFD_ASSERT (p->type == bfd_symbol_reloc_link_order);
3727 r_extern = 1;
3728 h = ((struct aout_link_hash_entry *)
57402f1e 3729 bfd_wrapped_link_hash_lookup (flaginfo->output_bfd, flaginfo->info,
116c20d2
NC		 3730 pr->u.name, FALSE, FALSE, TRUE));
3731 if (h != NULL
3732 && h->indx >= 0)
3733 r_index = h->indx;
3734 else if (h != NULL)
3735 {
3736 /* We decided to strip this symbol, but it turns out that we
3737 can't. Note that we lose the other and desc information
3738 here. I don't think that will ever matter for a global
3739 symbol. */
3740 h->indx = -2;
3741 h->written = FALSE;
57402f1e 3742 if (!aout_link_write_other_symbol (&h->root.root, flaginfo))
116c20d2
NC		 3743 return FALSE;
3744 r_index = h->indx;
3745 }
3746 else
3747 {
1a72702b
AM		 3748 (*flaginfo->info->callbacks->unattached_reloc)
3749 (flaginfo->info, pr->u.name, NULL, NULL, (bfd_vma) 0);
116c20d2
NC		 3750 r_index = 0;
3751 }
3752 }
252b5132 3753
57402f1e 3754 howto = bfd_reloc_type_lookup (flaginfo->output_bfd, pr->reloc);
116c20d2 3755 if (howto == 0)
252b5132 3756 {
116c20d2
NC		 3757 bfd_set_error (bfd_error_bad_value);
3758 return FALSE;
252b5132
RH		 3759 }
3760
57402f1e
NC		 3761 if (o == obj_textsec (flaginfo->output_bfd))
3762 reloff_ptr = &flaginfo->treloff;
3763 else if (o == obj_datasec (flaginfo->output_bfd))
3764 reloff_ptr = &flaginfo->dreloff;
116c20d2
NC		 3765 else
3766 abort ();
3767
57402f1e 3768 if (obj_reloc_entry_size (flaginfo->output_bfd) == RELOC_STD_SIZE)
252b5132 3769 {
116c20d2 3770#ifdef MY_put_reloc
57402f1e 3771 MY_put_reloc (flaginfo->output_bfd, r_extern, r_index, p->offset, howto,
116c20d2
NC		 3772 &srel);
3773#else
3774 {
3775 int r_pcrel;
3776 int r_baserel;
3777 int r_jmptable;
3778 int r_relative;
3779 int r_length;
252b5132 3780
116c20d2
NC		 3781 r_pcrel = (int) howto->pc_relative;
3782 r_baserel = (howto->type & 8) != 0;
3783 r_jmptable = (howto->type & 16) != 0;
3784 r_relative = (howto->type & 32) != 0;
3785 r_length = howto->size;
252b5132 3786
57402f1e
NC		 3787 PUT_WORD (flaginfo->output_bfd, p->offset, srel.r_address);
3788 if (bfd_header_big_endian (flaginfo->output_bfd))
116c20d2
NC		 3789 {
3790 srel.r_index[0] = r_index >> 16;
3791 srel.r_index[1] = r_index >> 8;
3792 srel.r_index[2] = r_index;
3793 srel.r_type[0] =
3794 ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0)
3795 | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0)
3796 | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0)
3797 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0)
3798 | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0)
3799 | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG));
3800 }
3801 else
3802 {
3803 srel.r_index[2] = r_index >> 16;
3804 srel.r_index[1] = r_index >> 8;
3805 srel.r_index[0] = r_index;
3806 srel.r_type[0] =
3807 ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0)
3808 | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0)
3809 | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0)
3810 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0)
3811 | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0)
3812 | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE));
3813 }
3814 }
3815#endif
3816 rel_ptr = (void *) &srel;
252b5132 3817
116c20d2
NC		 3818 /* We have to write the addend into the object file, since
3819 standard a.out relocs are in place. It would be more
3820 reliable if we had the current contents of the file here,
3821 rather than assuming zeroes, but we can't read the file since
3822 it was opened using bfd_openw. */
3823 if (pr->addend != 0)
252b5132 3824 {
116c20d2
NC		 3825 bfd_size_type size;
3826 bfd_reloc_status_type r;
3827 bfd_byte *buf;
3828 bfd_boolean ok;
3829
3830 size = bfd_get_reloc_size (howto);
a50b1753 3831 buf = (bfd_byte *) bfd_zmalloc (size);
6346d5ca 3832 if (buf == NULL && size != 0)
116c20d2 3833 return FALSE;
57402f1e 3834 r = MY_relocate_contents (howto, flaginfo->output_bfd,
116c20d2
NC		 3835 (bfd_vma) pr->addend, buf);
3836 switch (r)
252b5132 3837 {
116c20d2
NC		 3838 case bfd_reloc_ok:
3839 break;
3840 default:
3841 case bfd_reloc_outofrange:
3842 abort ();
3843 case bfd_reloc_overflow:
1a72702b
AM		 3844 (*flaginfo->info->callbacks->reloc_overflow)
3845 (flaginfo->info, NULL,
3846 (p->type == bfd_section_reloc_link_order
3847 ? bfd_section_name (flaginfo->output_bfd,
3848 pr->u.section)
3849 : pr->u.name),
3850 howto->name, pr->addend, NULL, NULL, (bfd_vma) 0);
116c20d2 3851 break;
252b5132 3852 }
57402f1e 3853 ok = bfd_set_section_contents (flaginfo->output_bfd, o, (void *) buf,
116c20d2
NC		 3854 (file_ptr) p->offset, size);
3855 free (buf);
3856 if (! ok)
3857 return FALSE;
252b5132
RH		 3858 }
3859 }
116c20d2 3860 else
252b5132 3861 {
116c20d2 3862#ifdef MY_put_ext_reloc
57402f1e 3863 MY_put_ext_reloc (flaginfo->output_bfd, r_extern, r_index, p->offset,
116c20d2
NC		 3864 howto, &erel, pr->addend);
3865#else
57402f1e 3866 PUT_WORD (flaginfo->output_bfd, p->offset, erel.r_address);
252b5132 3867
57402f1e 3868 if (bfd_header_big_endian (flaginfo->output_bfd))
116c20d2
NC		 3869 {
3870 erel.r_index[0] = r_index >> 16;
3871 erel.r_index[1] = r_index >> 8;
3872 erel.r_index[2] = r_index;
3873 erel.r_type[0] =
3874 ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0)
3875 | (howto->type << RELOC_EXT_BITS_TYPE_SH_BIG));
3876 }
3877 else
3878 {
3879 erel.r_index[2] = r_index >> 16;
3880 erel.r_index[1] = r_index >> 8;
3881 erel.r_index[0] = r_index;
3882 erel.r_type[0] =
3883 (r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0)
3884 | (howto->type << RELOC_EXT_BITS_TYPE_SH_LITTLE);
3885 }
252b5132 3886
57402f1e 3887 PUT_WORD (flaginfo->output_bfd, (bfd_vma) pr->addend, erel.r_addend);
116c20d2 3888#endif /* MY_put_ext_reloc */
252b5132 3889
116c20d2 3890 rel_ptr = (void *) &erel;
252b5132 3891 }
252b5132 3892
57402f1e
NC		 3893 amt = obj_reloc_entry_size (flaginfo->output_bfd);
3894 if (bfd_seek (flaginfo->output_bfd, *reloff_ptr, SEEK_SET) != 0
3895 || bfd_bwrite (rel_ptr, amt, flaginfo->output_bfd) != amt)
116c20d2 3896 return FALSE;
252b5132 3897
57402f1e 3898 *reloff_ptr += obj_reloc_entry_size (flaginfo->output_bfd);
252b5132 3899
116c20d2
NC		 3900 /* Assert that the relocs have not run into the symbols, and that n
3901 the text relocs have not run into the data relocs. */
57402f1e
NC		 3902 BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (flaginfo->output_bfd)
3903 && (reloff_ptr != &flaginfo->treloff
116c20d2 3904 || (*reloff_ptr
57402f1e 3905 <= obj_datasec (flaginfo->output_bfd)->rel_filepos)));
116c20d2
NC		 3906
3907 return TRUE;
252b5132
RH		 3908}
3909
116c20d2 3910/* Get the section corresponding to a reloc index. */
252b5132 3911
116c20d2
NC		 3912static INLINE asection *
3913aout_reloc_index_to_section (bfd *abfd, int indx)
252b5132 3914{
116c20d2 3915 switch (indx & N_TYPE)
252b5132 3916 {
116c20d2
NC		 3917 case N_TEXT: return obj_textsec (abfd);
3918 case N_DATA: return obj_datasec (abfd);
3919 case N_BSS: return obj_bsssec (abfd);
3920 case N_ABS:
3921 case N_UNDF: return bfd_abs_section_ptr;
3922 default: abort ();
252b5132 3923 }
116c20d2 3924 return NULL;
252b5132
RH		 3925}
3926
116c20d2 3927/* Relocate an a.out section using standard a.out relocs. */
252b5132 3928
b34976b6 3929static bfd_boolean
57402f1e 3930aout_link_input_section_std (struct aout_final_link_info *flaginfo,
116c20d2
NC		 3931 bfd *input_bfd,
3932 asection *input_section,
3933 struct reloc_std_external *relocs,
3934 bfd_size_type rel_size,
3935 bfd_byte *contents)
252b5132 3936{
116c20d2
NC		 3937 bfd_boolean (*check_dynamic_reloc)
3938 (struct bfd_link_info *, bfd *, asection *,
3939 struct aout_link_hash_entry *, void *, bfd_byte *, bfd_boolean *,
3940 bfd_vma *);
252b5132 3941 bfd *output_bfd;
116c20d2
NC		 3942 bfd_boolean relocatable;
3943 struct external_nlist *syms;
252b5132 3944 char *strings;
116c20d2 3945 struct aout_link_hash_entry **sym_hashes;
252b5132 3946 int *symbol_map;
116c20d2
NC		 3947 bfd_size_type reloc_count;
3948 struct reloc_std_external *rel;
3949 struct reloc_std_external *rel_end;
252b5132 3950
57402f1e 3951 output_bfd = flaginfo->output_bfd;
116c20d2 3952 check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc;
252b5132 3953
116c20d2
NC		 3954 BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE);
3955 BFD_ASSERT (input_bfd->xvec->header_byteorder
3956 == output_bfd->xvec->header_byteorder);
252b5132 3957
0e1862bb 3958 relocatable = bfd_link_relocatable (flaginfo->info);
116c20d2
NC		 3959 syms = obj_aout_external_syms (input_bfd);
3960 strings = obj_aout_external_strings (input_bfd);
3961 sym_hashes = obj_aout_sym_hashes (input_bfd);
57402f1e 3962 symbol_map = flaginfo->symbol_map;
116c20d2
NC		 3963
3964 reloc_count = rel_size / RELOC_STD_SIZE;
3965 rel = relocs;
3966 rel_end = rel + reloc_count;
3967 for (; rel < rel_end; rel++)
252b5132 3968 {
116c20d2
NC		 3969 bfd_vma r_addr;
3970 int r_index;
3971 int r_extern;
3972 int r_pcrel;
3973 int r_baserel = 0;
3974 reloc_howto_type *howto;
3975 struct aout_link_hash_entry *h = NULL;
3976 bfd_vma relocation;
3977 bfd_reloc_status_type r;
252b5132 3978
116c20d2 3979 r_addr = GET_SWORD (input_bfd, rel->r_address);
252b5132 3980
116c20d2
NC		 3981#ifdef MY_reloc_howto
3982 howto = MY_reloc_howto (input_bfd, rel, r_index, r_extern, r_pcrel);
3983#else
3984 {
3985 int r_jmptable;
3986 int r_relative;
3987 int r_length;
3988 unsigned int howto_idx;
252b5132 3989
116c20d2
NC		 3990 if (bfd_header_big_endian (input_bfd))
3991 {
3992 r_index = (((unsigned int) rel->r_index[0] << 16)
3993 | ((unsigned int) rel->r_index[1] << 8)
3994 | rel->r_index[2]);
3995 r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
3996 r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
3997 r_baserel = (0 != (rel->r_type[0] & RELOC_STD_BITS_BASEREL_BIG));
3998 r_jmptable= (0 != (rel->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG));
3999 r_relative= (0 != (rel->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG));
4000 r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_BIG)
4001 >> RELOC_STD_BITS_LENGTH_SH_BIG);
4002 }
4003 else
4004 {
4005 r_index = (((unsigned int) rel->r_index[2] << 16)
4006 | ((unsigned int) rel->r_index[1] << 8)
4007 | rel->r_index[0]);
4008 r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
4009 r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
4010 r_baserel = (0 != (rel->r_type[0]
4011 & RELOC_STD_BITS_BASEREL_LITTLE));
4012 r_jmptable= (0 != (rel->r_type[0]
4013 & RELOC_STD_BITS_JMPTABLE_LITTLE));
4014 r_relative= (0 != (rel->r_type[0]
4015 & RELOC_STD_BITS_RELATIVE_LITTLE));
4016 r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE)
4017 >> RELOC_STD_BITS_LENGTH_SH_LITTLE);
4018 }
252b5132 4019
116c20d2
NC		 4020 howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel
4021 + 16 * r_jmptable + 32 * r_relative);
ad756e3f
AM		 4022 if (howto_idx < TABLE_SIZE (howto_table_std))
4023 howto = howto_table_std + howto_idx;
4024 else
4025 howto = NULL;
116c20d2
NC		 4026 }
4027#endif
252b5132 4028
ad756e3f
AM		 4029 if (howto == NULL)
4030 {
57402f1e 4031 (*flaginfo->info->callbacks->einfo)
ad756e3f
AM		 4032 (_("%P: %B: unexpected relocation type\n"), input_bfd);
4033 bfd_set_error (bfd_error_bad_value);
4034 return FALSE;
4035 }
4036
116c20d2 4037 if (relocatable)
252b5132 4038 {
116c20d2
NC		 4039 /* We are generating a relocatable output file, and must
4040 modify the reloc accordingly. */
4041 if (r_extern)
252b5132 4042 {
116c20d2
NC		 4043 /* If we know the symbol this relocation is against,
4044 convert it into a relocation against a section. This
4045 is what the native linker does. */
4046 h = sym_hashes[r_index];
4047 if (h != NULL
4048 && (h->root.type == bfd_link_hash_defined
4049 || h->root.type == bfd_link_hash_defweak))
252b5132 4050 {
252b5132
RH		 4051 asection *output_section;
4052
116c20d2
NC		 4053 /* Change the r_extern value. */
4054 if (bfd_header_big_endian (output_bfd))
4055 rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_BIG;
4056 else
4057 rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_LITTLE;
252b5132 4058
116c20d2
NC		 4059 /* Compute a new r_index. */
4060 output_section = h->root.u.def.section->output_section;
252b5132 4061 if (output_section == obj_textsec (output_bfd))
116c20d2 4062 r_index = N_TEXT;
252b5132 4063 else if (output_section == obj_datasec (output_bfd))
116c20d2 4064 r_index = N_DATA;
252b5132 4065 else if (output_section == obj_bsssec (output_bfd))
116c20d2 4066 r_index = N_BSS;
252b5132 4067 else
116c20d2 4068 r_index = N_ABS;
252b5132 4069
116c20d2
NC		 4070 /* Add the symbol value and the section VMA to the
4071 addend stored in the contents. */
4072 relocation = (h->root.u.def.value
4073 + output_section->vma
4074 + h->root.u.def.section->output_offset);
252b5132 4075 }
116c20d2 4076 else
252b5132 4077 {
116c20d2
NC		 4078 /* We must change r_index according to the symbol
4079 map. */
4080 r_index = symbol_map[r_index];
252b5132 4081
116c20d2 4082 if (r_index == -1)
252b5132 4083 {
116c20d2 4084 if (h != NULL)
252b5132 4085 {
116c20d2
NC		 4086 /* We decided to strip this symbol, but it
4087 turns out that we can't. Note that we
4088 lose the other and desc information here.
4089 I don't think that will ever matter for a
4090 global symbol. */
4091 if (h->indx < 0)
252b5132 4092 {
116c20d2
NC		 4093 h->indx = -2;
4094 h->written = FALSE;
7686d77d 4095 if (!aout_link_write_other_symbol (&h->root.root,
57402f1e 4096 flaginfo))
116c20d2 4097 return FALSE;
252b5132 4098 }
116c20d2
NC		 4099 r_index = h->indx;
4100 }
4101 else
4102 {
4103 const char *name;
4104
4105 name = strings + GET_WORD (input_bfd,
4106 syms[r_index].e_strx);
1a72702b
AM		 4107 (*flaginfo->info->callbacks->unattached_reloc)
4108 (flaginfo->info, name,
4109 input_bfd, input_section, r_addr);
116c20d2 4110 r_index = 0;
252b5132
RH		 4111 }
4112 }
116c20d2
NC		 4113
4114 relocation = 0;
252b5132
RH		 4115 }
4116
116c20d2
NC		 4117 /* Write out the new r_index value. */
4118 if (bfd_header_big_endian (output_bfd))
252b5132 4119 {
116c20d2
NC		 4120 rel->r_index[0] = r_index >> 16;
4121 rel->r_index[1] = r_index >> 8;
4122 rel->r_index[2] = r_index;
252b5132
RH		 4123 }
4124 else
4125 {
116c20d2
NC		 4126 rel->r_index[2] = r_index >> 16;
4127 rel->r_index[1] = r_index >> 8;
4128 rel->r_index[0] = r_index;
252b5132
RH		 4129 }
4130 }
252b5132 4131 else
116c20d2
NC		 4132 {
4133 asection *section;
252b5132 4134
116c20d2
NC		 4135 /* This is a relocation against a section. We must
4136 adjust by the amount that the section moved. */
4137 section = aout_reloc_index_to_section (input_bfd, r_index);
4138 relocation = (section->output_section->vma
4139 + section->output_offset
4140 - section->vma);
4141 }
252b5132 4142
116c20d2
NC		 4143 /* Change the address of the relocation. */
4144 PUT_WORD (output_bfd,
4145 r_addr + input_section->output_offset,
4146 rel->r_address);
252b5132 4147
116c20d2
NC		 4148 /* Adjust a PC relative relocation by removing the reference
4149 to the original address in the section and including the
4150 reference to the new address. */
4151 if (r_pcrel)
4152 relocation -= (input_section->output_section->vma
4153 + input_section->output_offset
4154 - input_section->vma);
e92d460e 4155
116c20d2
NC		 4156#ifdef MY_relocatable_reloc
4157 MY_relocatable_reloc (howto, output_bfd, rel, relocation, r_addr);
4158#endif
252b5132 4159
116c20d2
NC		 4160 if (relocation == 0)
4161 r = bfd_reloc_ok;
4162 else
4163 r = MY_relocate_contents (howto,
4164 input_bfd, relocation,
4165 contents + r_addr);
252b5132 4166 }
116c20d2
NC		 4167 else
4168 {
4169 bfd_boolean hundef;
252b5132 4170
116c20d2
NC		 4171 /* We are generating an executable, and must do a full
4172 relocation. */
4173 hundef = FALSE;
252b5132 4174
116c20d2
NC		 4175 if (r_extern)
4176 {
4177 h = sym_hashes[r_index];
252b5132 4178
116c20d2
NC		 4179 if (h != NULL
4180 && (h->root.type == bfd_link_hash_defined
4181 || h->root.type == bfd_link_hash_defweak))
4182 {
4183 relocation = (h->root.u.def.value
4184 + h->root.u.def.section->output_section->vma
4185 + h->root.u.def.section->output_offset);
4186 }
4187 else if (h != NULL
4188 && h->root.type == bfd_link_hash_undefweak)
4189 relocation = 0;
4190 else
4191 {
4192 hundef = TRUE;
4193 relocation = 0;
4194 }
4195 }
4196 else
4197 {
4198 asection *section;
252b5132 4199
116c20d2
NC		 4200 section = aout_reloc_index_to_section (input_bfd, r_index);
4201 relocation = (section->output_section->vma
4202 + section->output_offset
4203 - section->vma);
4204 if (r_pcrel)
4205 relocation += input_section->vma;
4206 }
252b5132 4207
116c20d2
NC		 4208 if (check_dynamic_reloc != NULL)
4209 {
4210 bfd_boolean skip;
252b5132 4211
116c20d2 4212 if (! ((*check_dynamic_reloc)
57402f1e 4213 (flaginfo->info, input_bfd, input_section, h,
116c20d2
NC		 4214 (void *) rel, contents, &skip, &relocation)))
4215 return FALSE;
4216 if (skip)
4217 continue;
4218 }
252b5132 4219
116c20d2
NC		 4220 /* Now warn if a global symbol is undefined. We could not
4221 do this earlier, because check_dynamic_reloc might want
4222 to skip this reloc. */
0e1862bb 4223 if (hundef && ! bfd_link_pic (flaginfo->info) && ! r_baserel)
116c20d2
NC		 4224 {
4225 const char *name;
252b5132 4226
116c20d2
NC		 4227 if (h != NULL)
4228 name = h->root.root.string;
4229 else
4230 name = strings + GET_WORD (input_bfd, syms[r_index].e_strx);
1a72702b
AM		 4231 (*flaginfo->info->callbacks->undefined_symbol)
4232 (flaginfo->info, name, input_bfd, input_section, r_addr, TRUE);
116c20d2 4233 }
252b5132 4234
116c20d2
NC		 4235 r = MY_final_link_relocate (howto,
4236 input_bfd, input_section,
4237 contents, r_addr, relocation,
4238 (bfd_vma) 0);
252b5132 4239 }
252b5132 4240
116c20d2
NC		 4241 if (r != bfd_reloc_ok)
4242 {
4243 switch (r)
4244 {
4245 default:
4246 case bfd_reloc_outofrange:
4247 abort ();
4248 case bfd_reloc_overflow:
4249 {
4250 const char *name;
252b5132 4251
116c20d2
NC		 4252 if (h != NULL)
4253 name = NULL;
4254 else if (r_extern)
4255 name = strings + GET_WORD (input_bfd,
4256 syms[r_index].e_strx);
4257 else
4258 {
4259 asection *s;
252b5132 4260
116c20d2
NC		 4261 s = aout_reloc_index_to_section (input_bfd, r_index);
4262 name = bfd_section_name (input_bfd, s);
4263 }
1a72702b
AM		 4264 (*flaginfo->info->callbacks->reloc_overflow)
4265 (flaginfo->info, (h ? &h->root : NULL), name, howto->name,
4266 (bfd_vma) 0, input_bfd, input_section, r_addr);
116c20d2
NC		 4267 }
4268 break;
4269 }
4270 }
252b5132
RH		 4271 }
4272
b34976b6 4273 return TRUE;
252b5132
RH		 4274}
4275
116c20d2 4276/* Relocate an a.out section using extended a.out relocs. */
252b5132 4277
b34976b6 4278static bfd_boolean
57402f1e 4279aout_link_input_section_ext (struct aout_final_link_info *flaginfo,
116c20d2
NC		 4280 bfd *input_bfd,
4281 asection *input_section,
4282 struct reloc_ext_external *relocs,
4283 bfd_size_type rel_size,
4284 bfd_byte *contents)
252b5132 4285{
b34976b6 4286 bfd_boolean (*check_dynamic_reloc)
116c20d2
NC		 4287 (struct bfd_link_info *, bfd *, asection *,
4288 struct aout_link_hash_entry *, void *, bfd_byte *, bfd_boolean *,
4289 bfd_vma *);
252b5132 4290 bfd *output_bfd;
1049f94e 4291 bfd_boolean relocatable;
252b5132
RH		 4292 struct external_nlist *syms;
4293 char *strings;
4294 struct aout_link_hash_entry **sym_hashes;
4295 int *symbol_map;
4296 bfd_size_type reloc_count;
116c20d2
NC		 4297 struct reloc_ext_external *rel;
4298 struct reloc_ext_external *rel_end;
252b5132 4299
57402f1e 4300 output_bfd = flaginfo->output_bfd;
252b5132
RH		 4301 check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc;
4302
116c20d2 4303 BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_EXT_SIZE);
252b5132
RH		 4304 BFD_ASSERT (input_bfd->xvec->header_byteorder
4305 == output_bfd->xvec->header_byteorder);
4306
0e1862bb 4307 relocatable = bfd_link_relocatable (flaginfo->info);
252b5132
RH		 4308 syms = obj_aout_external_syms (input_bfd);
4309 strings = obj_aout_external_strings (input_bfd);
4310 sym_hashes = obj_aout_sym_hashes (input_bfd);
57402f1e 4311 symbol_map = flaginfo->symbol_map;
252b5132 4312
116c20d2 4313 reloc_count = rel_size / RELOC_EXT_SIZE;
252b5132
RH		 4314 rel = relocs;
4315 rel_end = rel + reloc_count;
4316 for (; rel < rel_end; rel++)
4317 {
4318 bfd_vma r_addr;
4319 int r_index;
4320 int r_extern;
116c20d2
NC		 4321 unsigned int r_type;
4322 bfd_vma r_addend;
252b5132 4323 struct aout_link_hash_entry *h = NULL;
116c20d2 4324 asection *r_section = NULL;
252b5132 4325 bfd_vma relocation;
252b5132
RH		 4326
4327 r_addr = GET_SWORD (input_bfd, rel->r_address);
4328
116c20d2
NC		 4329 if (bfd_header_big_endian (input_bfd))
4330 {
4331 r_index = (((unsigned int) rel->r_index[0] << 16)
4332 | ((unsigned int) rel->r_index[1] << 8)
4333 | rel->r_index[2]);
4334 r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG));
4335 r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
4336 >> RELOC_EXT_BITS_TYPE_SH_BIG);
4337 }
4338 else
4339 {
4340 r_index = (((unsigned int) rel->r_index[2] << 16)
4341 | ((unsigned int) rel->r_index[1] << 8)
4342 | rel->r_index[0]);
4343 r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE));
4344 r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
4345 >> RELOC_EXT_BITS_TYPE_SH_LITTLE);
4346 }
252b5132 4347
116c20d2 4348 r_addend = GET_SWORD (input_bfd, rel->r_addend);
252b5132 4349
ad756e3f
AM		 4350 if (r_type >= TABLE_SIZE (howto_table_ext))
4351 {
57402f1e 4352 (*flaginfo->info->callbacks->einfo)
ad756e3f
AM		 4353 (_("%P: %B: unexpected relocation type\n"), input_bfd);
4354 bfd_set_error (bfd_error_bad_value);
4355 return FALSE;
4356 }
252b5132 4357
1049f94e 4358 if (relocatable)
252b5132 4359 {
1049f94e 4360 /* We are generating a relocatable output file, and must
252b5132 4361 modify the reloc accordingly. */
116c20d2
NC		 4362 if (r_extern
4363 || r_type == (unsigned int) RELOC_BASE10
4364 || r_type == (unsigned int) RELOC_BASE13
4365 || r_type == (unsigned int) RELOC_BASE22)
252b5132
RH		 4366 {
4367 /* If we know the symbol this relocation is against,
4368 convert it into a relocation against a section. This
4369 is what the native linker does. */
116c20d2
NC		 4370 if (r_type == (unsigned int) RELOC_BASE10
4371 || r_type == (unsigned int) RELOC_BASE13
4372 || r_type == (unsigned int) RELOC_BASE22)
4373 h = NULL;
4374 else
4375 h = sym_hashes[r_index];
4376 if (h != NULL
252b5132
RH		 4377 && (h->root.type == bfd_link_hash_defined
4378 || h->root.type == bfd_link_hash_defweak))
4379 {
4380 asection *output_section;
4381
4382 /* Change the r_extern value. */
4383 if (bfd_header_big_endian (output_bfd))
116c20d2 4384 rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_BIG;
252b5132 4385 else
116c20d2 4386 rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_LITTLE;
252b5132
RH		 4387
4388 /* Compute a new r_index. */
4389 output_section = h->root.u.def.section->output_section;
4390 if (output_section == obj_textsec (output_bfd))
4391 r_index = N_TEXT;
4392 else if (output_section == obj_datasec (output_bfd))
4393 r_index = N_DATA;
4394 else if (output_section == obj_bsssec (output_bfd))
4395 r_index = N_BSS;
4396 else
4397 r_index = N_ABS;
4398
4399 /* Add the symbol value and the section VMA to the
116c20d2 4400 addend. */
252b5132
RH		 4401 relocation = (h->root.u.def.value
4402 + output_section->vma
4403 + h->root.u.def.section->output_offset);
116c20d2
NC		 4404
4405 /* Now RELOCATION is the VMA of the final
4406 destination. If this is a PC relative reloc,
4407 then ADDEND is the negative of the source VMA.
4408 We want to set ADDEND to the difference between
4409 the destination VMA and the source VMA, which
4410 means we must adjust RELOCATION by the change in
4411 the source VMA. This is done below. */
252b5132
RH		 4412 }
4413 else
4414 {
4415 /* We must change r_index according to the symbol
4416 map. */
4417 r_index = symbol_map[r_index];
4418
4419 if (r_index == -1)
4420 {
4421 if (h != NULL)
4422 {
4423 /* We decided to strip this symbol, but it
4424 turns out that we can't. Note that we
4425 lose the other and desc information here.
4426 I don't think that will ever matter for a
4427 global symbol. */
4428 if (h->indx < 0)
4429 {
4430 h->indx = -2;
b34976b6 4431 h->written = FALSE;
7686d77d 4432 if (!aout_link_write_other_symbol (&h->root.root,
57402f1e 4433 flaginfo))
b34976b6 4434 return FALSE;
252b5132
RH		 4435 }
4436 r_index = h->indx;
4437 }
4438 else
4439 {
4440 const char *name;
4441
4442 name = strings + GET_WORD (input_bfd,
4443 syms[r_index].e_strx);
1a72702b
AM		 4444 (*flaginfo->info->callbacks->unattached_reloc)
4445 (flaginfo->info, name,
4446 input_bfd, input_section, r_addr);
252b5132
RH		 4447 r_index = 0;
4448 }
4449 }
4450
4451 relocation = 0;
116c20d2
NC		 4452
4453 /* If this is a PC relative reloc, then the addend
4454 is the negative of the source VMA. We must
4455 adjust it by the change in the source VMA. This
4456 is done below. */
252b5132
RH		 4457 }
4458
4459 /* Write out the new r_index value. */
4460 if (bfd_header_big_endian (output_bfd))
4461 {
4462 rel->r_index[0] = r_index >> 16;
4463 rel->r_index[1] = r_index >> 8;
4464 rel->r_index[2] = r_index;
4465 }
4466 else
4467 {
4468 rel->r_index[2] = r_index >> 16;
4469 rel->r_index[1] = r_index >> 8;
4470 rel->r_index[0] = r_index;
4471 }
4472 }
4473 else
4474 {
252b5132
RH		 4475 /* This is a relocation against a section. We must
4476 adjust by the amount that the section moved. */
116c20d2
NC		 4477 r_section = aout_reloc_index_to_section (input_bfd, r_index);
4478 relocation = (r_section->output_section->vma
4479 + r_section->output_offset
4480 - r_section->vma);
252b5132 4481
116c20d2
NC		 4482 /* If this is a PC relative reloc, then the addend is
4483 the difference in VMA between the destination and the
4484 source. We have just adjusted for the change in VMA
4485 of the destination, so we must also adjust by the
4486 change in VMA of the source. This is done below. */
4487 }
252b5132 4488
116c20d2
NC		 4489 /* As described above, we must always adjust a PC relative
4490 reloc by the change in VMA of the source. However, if
4491 pcrel_offset is set, then the addend does not include the
4492 location within the section, in which case we don't need
4493 to adjust anything. */
4494 if (howto_table_ext[r_type].pc_relative
4495 && ! howto_table_ext[r_type].pcrel_offset)
252b5132
RH		 4496 relocation -= (input_section->output_section->vma
4497 + input_section->output_offset
4498 - input_section->vma);
4499
116c20d2
NC		 4500 /* Change the addend if necessary. */
4501 if (relocation != 0)
4502 PUT_WORD (output_bfd, r_addend + relocation, rel->r_addend);
252b5132 4503
116c20d2
NC		 4504 /* Change the address of the relocation. */
4505 PUT_WORD (output_bfd,
4506 r_addr + input_section->output_offset,
4507 rel->r_address);
252b5132
RH		 4508 }
4509 else
4510 {
b34976b6 4511 bfd_boolean hundef;
116c20d2 4512 bfd_reloc_status_type r;
252b5132
RH		 4513
4514 /* We are generating an executable, and must do a full
4515 relocation. */
b34976b6 4516 hundef = FALSE;
252b5132
RH		 4517
4518 if (r_extern)
4519 {
4520 h = sym_hashes[r_index];
4521
116c20d2 4522 if (h != NULL
252b5132
RH		 4523 && (h->root.type == bfd_link_hash_defined
4524 || h->root.type == bfd_link_hash_defweak))
4525 {
4526 relocation = (h->root.u.def.value
4527 + h->root.u.def.section->output_section->vma
4528 + h->root.u.def.section->output_offset);
4529 }
116c20d2 4530 else if (h != NULL
252b5132
RH		 4531 && h->root.type == bfd_link_hash_undefweak)
4532 relocation = 0;
4533 else
4534 {
b34976b6 4535 hundef = TRUE;
252b5132
RH		 4536 relocation = 0;
4537 }
4538 }
116c20d2
NC		 4539 else if (r_type == (unsigned int) RELOC_BASE10
4540 || r_type == (unsigned int) RELOC_BASE13
4541 || r_type == (unsigned int) RELOC_BASE22)
4542 {
4543 struct external_nlist *sym;
4544 int type;
4545
4546 /* For base relative relocs, r_index is always an index
4547 into the symbol table, even if r_extern is 0. */
4548 sym = syms + r_index;
4549 type = H_GET_8 (input_bfd, sym->e_type);
4550 if ((type & N_TYPE) == N_TEXT
4551 || type == N_WEAKT)
4552 r_section = obj_textsec (input_bfd);
4553 else if ((type & N_TYPE) == N_DATA
4554 || type == N_WEAKD)
4555 r_section = obj_datasec (input_bfd);
4556 else if ((type & N_TYPE) == N_BSS
4557 || type == N_WEAKB)
4558 r_section = obj_bsssec (input_bfd);
4559 else if ((type & N_TYPE) == N_ABS
4560 || type == N_WEAKA)
4561 r_section = bfd_abs_section_ptr;
4562 else
4563 abort ();
4564 relocation = (r_section->output_section->vma
4565 + r_section->output_offset
4566 + (GET_WORD (input_bfd, sym->e_value)
4567 - r_section->vma));
4568 }
252b5132
RH		 4569 else
4570 {
116c20d2 4571 r_section = aout_reloc_index_to_section (input_bfd, r_index);
252b5132 4572
116c20d2
NC		 4573 /* If this is a PC relative reloc, then R_ADDEND is the
4574 difference between the two vmas, or
4575 old_dest_sec + old_dest_off - (old_src_sec + old_src_off)
4576 where
4577 old_dest_sec == section->vma
4578 and
4579 old_src_sec == input_section->vma
4580 and
4581 old_src_off == r_addr
4582
4583 _bfd_final_link_relocate expects RELOCATION +
4584 R_ADDEND to be the VMA of the destination minus
4585 r_addr (the minus r_addr is because this relocation
4586 is not pcrel_offset, which is a bit confusing and
4587 should, perhaps, be changed), or
4588 new_dest_sec
4589 where
4590 new_dest_sec == output_section->vma + output_offset
4591 We arrange for this to happen by setting RELOCATION to
4592 new_dest_sec + old_src_sec - old_dest_sec
4593
4594 If this is not a PC relative reloc, then R_ADDEND is
4595 simply the VMA of the destination, so we set
4596 RELOCATION to the change in the destination VMA, or
4597 new_dest_sec - old_dest_sec
4598 */
4599 relocation = (r_section->output_section->vma
4600 + r_section->output_offset
4601 - r_section->vma);
4602 if (howto_table_ext[r_type].pc_relative)
252b5132
RH		 4603 relocation += input_section->vma;
4604 }
4605
4606 if (check_dynamic_reloc != NULL)
4607 {
b34976b6 4608 bfd_boolean skip;
252b5132
RH		 4609
4610 if (! ((*check_dynamic_reloc)
57402f1e 4611 (flaginfo->info, input_bfd, input_section, h,
116c20d2 4612 (void *) rel, contents, &skip, &relocation)))
b34976b6 4613 return FALSE;
252b5132
RH		 4614 if (skip)
4615 continue;
4616 }
4617
4618 /* Now warn if a global symbol is undefined. We could not
4619 do this earlier, because check_dynamic_reloc might want
4620 to skip this reloc. */
116c20d2 4621 if (hundef
0e1862bb 4622 && ! bfd_link_pic (flaginfo->info)
116c20d2
NC		 4623 && r_type != (unsigned int) RELOC_BASE10
4624 && r_type != (unsigned int) RELOC_BASE13
4625 && r_type != (unsigned int) RELOC_BASE22)
252b5132
RH		 4626 {
4627 const char *name;
4628
4629 if (h != NULL)
4630 name = h->root.root.string;
4631 else
4632 name = strings + GET_WORD (input_bfd, syms[r_index].e_strx);
1a72702b
AM		 4633 (*flaginfo->info->callbacks->undefined_symbol)
4634 (flaginfo->info, name, input_bfd, input_section, r_addr, TRUE);
252b5132
RH		 4635 }
4636
116c20d2
NC		 4637 if (r_type != (unsigned int) RELOC_SPARC_REV32)
4638 r = MY_final_link_relocate (howto_table_ext + r_type,
4639 input_bfd, input_section,
4640 contents, r_addr, relocation,
4641 r_addend);
4642 else
252b5132 4643 {
116c20d2 4644 bfd_vma x;
252b5132 4645
116c20d2
NC		 4646 x = bfd_get_32 (input_bfd, contents + r_addr);
4647 x = x + relocation + r_addend;
4648 bfd_putl32 (/*input_bfd,*/ x, contents + r_addr);
4649 r = bfd_reloc_ok;
4650 }
4651
4652 if (r != bfd_reloc_ok)
4653 {
4654 switch (r)
4655 {
4656 default:
4657 case bfd_reloc_outofrange:
4658 abort ();
4659 case bfd_reloc_overflow:
252b5132 4660 {
116c20d2 4661 const char *name;
252b5132 4662
116c20d2
NC		 4663 if (h != NULL)
4664 name = NULL;
4665 else if (r_extern
4666 || r_type == (unsigned int) RELOC_BASE10
4667 || r_type == (unsigned int) RELOC_BASE13
4668 || r_type == (unsigned int) RELOC_BASE22)
4669 name = strings + GET_WORD (input_bfd,
4670 syms[r_index].e_strx);
4671 else
4672 {
4673 asection *s;
4674
4675 s = aout_reloc_index_to_section (input_bfd, r_index);
4676 name = bfd_section_name (input_bfd, s);
4677 }
1a72702b
AM		 4678 (*flaginfo->info->callbacks->reloc_overflow)
4679 (flaginfo->info, (h ? &h->root : NULL), name,
4680 howto_table_ext[r_type].name,
4681 r_addend, input_bfd, input_section, r_addr);
252b5132 4682 }
116c20d2
NC		 4683 break;
4684 }
252b5132
RH		 4685 }
4686 }
4687 }
4688
b34976b6 4689 return TRUE;
252b5132
RH		 4690}
4691
116c20d2
NC		 4692/* Link an a.out section into the output file. */
4693
4694static bfd_boolean
57402f1e 4695aout_link_input_section (struct aout_final_link_info *flaginfo,
116c20d2
NC		 4696 bfd *input_bfd,
4697 asection *input_section,
4698 file_ptr *reloff_ptr,
4699 bfd_size_type rel_size)
4700{
4701 bfd_size_type input_size;
4702 void * relocs;
4703
4704 /* Get the section contents. */
4705 input_size = input_section->size;
4706 if (! bfd_get_section_contents (input_bfd, input_section,
57402f1e 4707 (void *) flaginfo->contents,
116c20d2
NC		 4708 (file_ptr) 0, input_size))
4709 return FALSE;
4710
4711 /* Read in the relocs if we haven't already done it. */
4712 if (aout_section_data (input_section) != NULL
4713 && aout_section_data (input_section)->relocs != NULL)
4714 relocs = aout_section_data (input_section)->relocs;
4715 else
4716 {
57402f1e 4717 relocs = flaginfo->relocs;
116c20d2
NC		 4718 if (rel_size > 0)
4719 {
4720 if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0
4721 || bfd_bread (relocs, rel_size, input_bfd) != rel_size)
4722 return FALSE;
4723 }
4724 }
4725
4726 /* Relocate the section contents. */
4727 if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE)
4728 {
57402f1e 4729 if (! aout_link_input_section_std (flaginfo, input_bfd, input_section,
116c20d2 4730 (struct reloc_std_external *) relocs,
57402f1e 4731 rel_size, flaginfo->contents))
116c20d2
NC		 4732 return FALSE;
4733 }
4734 else
4735 {
57402f1e 4736 if (! aout_link_input_section_ext (flaginfo, input_bfd, input_section,
116c20d2 4737 (struct reloc_ext_external *) relocs,
57402f1e 4738 rel_size, flaginfo->contents))
116c20d2
NC		 4739 return FALSE;
4740 }
4741
4742 /* Write out the section contents. */
57402f1e 4743 if (! bfd_set_section_contents (flaginfo->output_bfd,
116c20d2 4744 input_section->output_section,
57402f1e 4745 (void *) flaginfo->contents,
116c20d2
NC		 4746 (file_ptr) input_section->output_offset,
4747 input_size))
4748 return FALSE;
4749
4750 /* If we are producing relocatable output, the relocs were
4751 modified, and we now write them out. */
0e1862bb 4752 if (bfd_link_relocatable (flaginfo->info) && rel_size > 0)
116c20d2 4753 {
57402f1e 4754 if (bfd_seek (flaginfo->output_bfd, *reloff_ptr, SEEK_SET) != 0)
116c20d2 4755 return FALSE;
57402f1e 4756 if (bfd_bwrite (relocs, rel_size, flaginfo->output_bfd) != rel_size)
116c20d2
NC		 4757 return FALSE;
4758 *reloff_ptr += rel_size;
4759
4760 /* Assert that the relocs have not run into the symbols, and
4761 that if these are the text relocs they have not run into the
4762 data relocs. */
57402f1e
NC		 4763 BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (flaginfo->output_bfd)
4764 && (reloff_ptr != &flaginfo->treloff
116c20d2 4765 || (*reloff_ptr
57402f1e 4766 <= obj_datasec (flaginfo->output_bfd)->rel_filepos)));
116c20d2
NC		 4767 }
4768
4769 return TRUE;
4770}
4771
4772/* Adjust and write out the symbols for an a.out file. Set the new
4773 symbol indices into a symbol_map. */
252b5132 4774
b34976b6 4775static bfd_boolean
57402f1e 4776aout_link_write_symbols (struct aout_final_link_info *flaginfo, bfd *input_bfd)
252b5132 4777{
252b5132 4778 bfd *output_bfd;
116c20d2 4779 bfd_size_type sym_count;
252b5132 4780 char *strings;
116c20d2
NC		 4781 enum bfd_link_strip strip;
4782 enum bfd_link_discard discard;
4783 struct external_nlist *outsym;
4784 bfd_size_type strtab_index;
4785 struct external_nlist *sym;
4786 struct external_nlist *sym_end;
4787 struct aout_link_hash_entry **sym_hash;
252b5132 4788 int *symbol_map;
116c20d2
NC		 4789 bfd_boolean pass;
4790 bfd_boolean skip_next;
252b5132 4791
57402f1e 4792 output_bfd = flaginfo->output_bfd;
116c20d2
NC		 4793 sym_count = obj_aout_external_sym_count (input_bfd);
4794 strings = obj_aout_external_strings (input_bfd);
57402f1e
NC		 4795 strip = flaginfo->info->strip;
4796 discard = flaginfo->info->discard;
4797 outsym = flaginfo->output_syms;
252b5132 4798
116c20d2
NC		 4799 /* First write out a symbol for this object file, unless we are
4800 discarding such symbols. */
4801 if (strip != strip_all
4802 && (strip != strip_some
57402f1e 4803 || bfd_hash_lookup (flaginfo->info->keep_hash, input_bfd->filename,
116c20d2
NC		 4804 FALSE, FALSE) != NULL)
4805 && discard != discard_all)
4806 {
4807 H_PUT_8 (output_bfd, N_TEXT, outsym->e_type);
4808 H_PUT_8 (output_bfd, 0, outsym->e_other);
4809 H_PUT_16 (output_bfd, 0, outsym->e_desc);
57402f1e 4810 strtab_index = add_to_stringtab (output_bfd, flaginfo->strtab,
116c20d2
NC		 4811 input_bfd->filename, FALSE);
4812 if (strtab_index == (bfd_size_type) -1)
4813 return FALSE;
4814 PUT_WORD (output_bfd, strtab_index, outsym->e_strx);
4815 PUT_WORD (output_bfd,
4816 (bfd_get_section_vma (output_bfd,
4817 obj_textsec (input_bfd)->output_section)
4818 + obj_textsec (input_bfd)->output_offset),
4819 outsym->e_value);
4820 ++obj_aout_external_sym_count (output_bfd);
4821 ++outsym;
4822 }
252b5132 4823
116c20d2
NC		 4824 pass = FALSE;
4825 skip_next = FALSE;
4826 sym = obj_aout_external_syms (input_bfd);
4827 sym_end = sym + sym_count;
4828 sym_hash = obj_aout_sym_hashes (input_bfd);
57402f1e 4829 symbol_map = flaginfo->symbol_map;
116c20d2
NC		 4830 memset (symbol_map, 0, (size_t) sym_count * sizeof *symbol_map);
4831 for (; sym < sym_end; sym++, sym_hash++, symbol_map++)
252b5132 4832 {
116c20d2
NC		 4833 const char *name;
4834 int type;
4835 struct aout_link_hash_entry *h;
4836 bfd_boolean skip;
4837 asection *symsec;
4838 bfd_vma val = 0;
4839 bfd_boolean copy;
252b5132 4840
116c20d2
NC		 4841 /* We set *symbol_map to 0 above for all symbols. If it has
4842 already been set to -1 for this symbol, it means that we are
4843 discarding it because it appears in a duplicate header file.
4844 See the N_BINCL code below. */
4845 if (*symbol_map == -1)
4846 continue;
252b5132 4847
116c20d2
NC		 4848 /* Initialize *symbol_map to -1, which means that the symbol was
4849 not copied into the output file. We will change it later if
4850 we do copy the symbol over. */
4851 *symbol_map = -1;
4852
4853 type = H_GET_8 (input_bfd, sym->e_type);
4854 name = strings + GET_WORD (input_bfd, sym->e_strx);
4855
4856 h = NULL;
4857
4858 if (pass)
252b5132 4859 {
116c20d2
NC		 4860 /* Pass this symbol through. It is the target of an
4861 indirect or warning symbol. */
4862 val = GET_WORD (input_bfd, sym->e_value);
4863 pass = FALSE;
252b5132 4864 }
116c20d2 4865 else if (skip_next)
252b5132 4866 {
116c20d2
NC		 4867 /* Skip this symbol, which is the target of an indirect
4868 symbol that we have changed to no longer be an indirect
4869 symbol. */
4870 skip_next = FALSE;
4871 continue;
252b5132 4872 }
116c20d2
NC		 4873 else
4874 {
4875 struct aout_link_hash_entry *hresolve;
252b5132 4876
116c20d2
NC		 4877 /* We have saved the hash table entry for this symbol, if
4878 there is one. Note that we could just look it up again
4879 in the hash table, provided we first check that it is an
4880 external symbol. */
4881 h = *sym_hash;
252b5132 4882
116c20d2
NC		 4883 /* Use the name from the hash table, in case the symbol was
4884 wrapped. */
4885 if (h != NULL
4886 && h->root.type != bfd_link_hash_warning)
4887 name = h->root.root.string;
252b5132 4888
116c20d2
NC		 4889 /* If this is an indirect or warning symbol, then change
4890 hresolve to the base symbol. We also change *sym_hash so
4891 that the relocation routines relocate against the real
4892 symbol. */
4893 hresolve = h;
4894 if (h != (struct aout_link_hash_entry *) NULL
4895 && (h->root.type == bfd_link_hash_indirect
4896 || h->root.type == bfd_link_hash_warning))
252b5132 4897 {
116c20d2
NC		 4898 hresolve = (struct aout_link_hash_entry *) h->root.u.i.link;
4899 while (hresolve->root.type == bfd_link_hash_indirect
4900 || hresolve->root.type == bfd_link_hash_warning)
4901 hresolve = ((struct aout_link_hash_entry *)
4902 hresolve->root.u.i.link);
4903 *sym_hash = hresolve;
4904 }
4905
4906 /* If the symbol has already been written out, skip it. */
4907 if (h != NULL
4908 && h->written)
4909 {
4910 if ((type & N_TYPE) == N_INDR
4911 || type == N_WARNING)
4912 skip_next = TRUE;
4913 *symbol_map = h->indx;
4914 continue;
4915 }
4916
4917 /* See if we are stripping this symbol. */
4918 skip = FALSE;
4919 switch (strip)
4920 {
4921 case strip_none:
4922 break;
4923 case strip_debugger:
4924 if ((type & N_STAB) != 0)
4925 skip = TRUE;
4926 break;
4927 case strip_some:
57402f1e 4928 if (bfd_hash_lookup (flaginfo->info->keep_hash, name, FALSE, FALSE)
116c20d2
NC		 4929 == NULL)
4930 skip = TRUE;
4931 break;
4932 case strip_all:
4933 skip = TRUE;
4934 break;
4935 }
4936 if (skip)
4937 {
4938 if (h != NULL)
4939 h->written = TRUE;
4940 continue;
4941 }
4942
4943 /* Get the value of the symbol. */
4944 if ((type & N_TYPE) == N_TEXT
4945 || type == N_WEAKT)
4946 symsec = obj_textsec (input_bfd);
4947 else if ((type & N_TYPE) == N_DATA
4948 || type == N_WEAKD)
4949 symsec = obj_datasec (input_bfd);
4950 else if ((type & N_TYPE) == N_BSS
4951 || type == N_WEAKB)
4952 symsec = obj_bsssec (input_bfd);
4953 else if ((type & N_TYPE) == N_ABS
4954 || type == N_WEAKA)
4955 symsec = bfd_abs_section_ptr;
4956 else if (((type & N_TYPE) == N_INDR
4957 && (hresolve == NULL
4958 || (hresolve->root.type != bfd_link_hash_defined
4959 && hresolve->root.type != bfd_link_hash_defweak
4960 && hresolve->root.type != bfd_link_hash_common)))
4961 || type == N_WARNING)
4962 {
4963 /* Pass the next symbol through unchanged. The
4964 condition above for indirect symbols is so that if
4965 the indirect symbol was defined, we output it with
4966 the correct definition so the debugger will
4967 understand it. */
4968 pass = TRUE;
4969 val = GET_WORD (input_bfd, sym->e_value);
4970 symsec = NULL;
4971 }
4972 else if ((type & N_STAB) != 0)
4973 {
4974 val = GET_WORD (input_bfd, sym->e_value);
4975 symsec = NULL;
4976 }
4977 else
4978 {
4979 /* If we get here with an indirect symbol, it means that
4980 we are outputting it with a real definition. In such
4981 a case we do not want to output the next symbol,
4982 which is the target of the indirection. */
4983 if ((type & N_TYPE) == N_INDR)
4984 skip_next = TRUE;
4985
4986 symsec = NULL;
4987
4988 /* We need to get the value from the hash table. We use
4989 hresolve so that if we have defined an indirect
4990 symbol we output the final definition. */
4991 if (h == NULL)
4992 {
4993 switch (type & N_TYPE)
4994 {
4995 case N_SETT:
4996 symsec = obj_textsec (input_bfd);
4997 break;
4998 case N_SETD:
4999 symsec = obj_datasec (input_bfd);
5000 break;
5001 case N_SETB:
5002 symsec = obj_bsssec (input_bfd);
5003 break;
5004 case N_SETA:
5005 symsec = bfd_abs_section_ptr;
5006 break;
5007 default:
5008 val = 0;
5009 break;
5010 }
5011 }
5012 else if (hresolve->root.type == bfd_link_hash_defined
5013 || hresolve->root.type == bfd_link_hash_defweak)
252b5132 5014 {
116c20d2 5015 asection *input_section;
252b5132
RH		 5016 asection *output_section;
5017
116c20d2
NC		 5018 /* This case usually means a common symbol which was
5019 turned into a defined symbol. */
5020 input_section = hresolve->root.u.def.section;
5021 output_section = input_section->output_section;
5022 BFD_ASSERT (bfd_is_abs_section (output_section)
5023 || output_section->owner == output_bfd);
5024 val = (hresolve->root.u.def.value
5025 + bfd_get_section_vma (output_bfd, output_section)
5026 + input_section->output_offset);
5027
5028 /* Get the correct type based on the section. If
5029 this is a constructed set, force it to be
5030 globally visible. */
5031 if (type == N_SETT
5032 || type == N_SETD
5033 || type == N_SETB
5034 || type == N_SETA)
5035 type |= N_EXT;
5036
5037 type &=~ N_TYPE;
252b5132 5038
252b5132 5039 if (output_section == obj_textsec (output_bfd))
116c20d2
NC		 5040 type |= (hresolve->root.type == bfd_link_hash_defined
5041 ? N_TEXT
5042 : N_WEAKT);
252b5132 5043 else if (output_section == obj_datasec (output_bfd))
116c20d2
NC		 5044 type |= (hresolve->root.type == bfd_link_hash_defined
5045 ? N_DATA
5046 : N_WEAKD);
252b5132 5047 else if (output_section == obj_bsssec (output_bfd))
116c20d2
NC		 5048 type |= (hresolve->root.type == bfd_link_hash_defined
5049 ? N_BSS
5050 : N_WEAKB);
252b5132 5051 else
116c20d2
NC		 5052 type |= (hresolve->root.type == bfd_link_hash_defined
5053 ? N_ABS
5054 : N_WEAKA);
5055 }
5056 else if (hresolve->root.type == bfd_link_hash_common)
5057 val = hresolve->root.u.c.size;
5058 else if (hresolve->root.type == bfd_link_hash_undefweak)
5059 {
5060 val = 0;
5061 type = N_WEAKU;
252b5132
RH		 5062 }
5063 else
116c20d2
NC		 5064 val = 0;
5065 }
5066 if (symsec != NULL)
5067 val = (symsec->output_section->vma
5068 + symsec->output_offset
5069 + (GET_WORD (input_bfd, sym->e_value)
5070 - symsec->vma));
5071
5072 /* If this is a global symbol set the written flag, and if
5073 it is a local symbol see if we should discard it. */
5074 if (h != NULL)
5075 {
5076 h->written = TRUE;
5077 h->indx = obj_aout_external_sym_count (output_bfd);
5078 }
5079 else if ((type & N_TYPE) != N_SETT
5080 && (type & N_TYPE) != N_SETD
5081 && (type & N_TYPE) != N_SETB
5082 && (type & N_TYPE) != N_SETA)
5083 {
5084 switch (discard)
252b5132 5085 {
116c20d2
NC		 5086 case discard_none:
5087 case discard_sec_merge:
5088 break;
5089 case discard_l:
5090 if ((type & N_STAB) == 0
5091 && bfd_is_local_label_name (input_bfd, name))
5092 skip = TRUE;
5093 break;
5094 case discard_all:
5095 skip = TRUE;
5096 break;
5097 }
5098 if (skip)
5099 {
5100 pass = FALSE;
5101 continue;
5102 }
5103 }
252b5132 5104
116c20d2
NC		 5105 /* An N_BINCL symbol indicates the start of the stabs
5106 entries for a header file. We need to scan ahead to the
5107 next N_EINCL symbol, ignoring nesting, adding up all the
5108 characters in the symbol names, not including the file
5109 numbers in types (the first number after an open
5110 parenthesis). */
5111 if (type == (int) N_BINCL)
5112 {
5113 struct external_nlist *incl_sym;
5114 int nest;
5115 struct aout_link_includes_entry *incl_entry;
5116 struct aout_link_includes_totals *t;
5117
5118 val = 0;
5119 nest = 0;
5120 for (incl_sym = sym + 1; incl_sym < sym_end; incl_sym++)
5121 {
5122 int incl_type;
5123
5124 incl_type = H_GET_8 (input_bfd, incl_sym->e_type);
5125 if (incl_type == (int) N_EINCL)
252b5132 5126 {
116c20d2
NC		 5127 if (nest == 0)
5128 break;
5129 --nest;
5130 }
5131 else if (incl_type == (int) N_BINCL)
5132 ++nest;
5133 else if (nest == 0)
5134 {
5135 const char *s;
5136
5137 s = strings + GET_WORD (input_bfd, incl_sym->e_strx);
5138 for (; *s != '\0'; s++)
252b5132 5139 {
116c20d2
NC		 5140 val += *s;
5141 if (*s == '(')
252b5132 5142 {
116c20d2
NC		 5143 /* Skip the file number. */
5144 ++s;
5145 while (ISDIGIT (*s))
5146 ++s;
5147 --s;
252b5132 5148 }
252b5132 5149 }
116c20d2
NC		 5150 }
5151 }
252b5132 5152
116c20d2
NC		 5153 /* If we have already included a header file with the
5154 same value, then replace this one with an N_EXCL
5155 symbol. */
57402f1e
NC		 5156 copy = (bfd_boolean) (! flaginfo->info->keep_memory);
5157 incl_entry = aout_link_includes_lookup (&flaginfo->includes,
116c20d2
NC		 5158 name, TRUE, copy);
5159 if (incl_entry == NULL)
5160 return FALSE;
5161 for (t = incl_entry->totals; t != NULL; t = t->next)
5162 if (t->total == val)
5163 break;
5164 if (t == NULL)
5165 {
5166 /* This is the first time we have seen this header
5167 file with this set of stabs strings. */
a50b1753 5168 t = (struct aout_link_includes_totals *)
57402f1e 5169 bfd_hash_allocate (&flaginfo->includes.root,
116c20d2
NC		 5170 sizeof *t);
5171 if (t == NULL)
5172 return FALSE;
5173 t->total = val;
5174 t->next = incl_entry->totals;
5175 incl_entry->totals = t;
5176 }
5177 else
5178 {
5179 int *incl_map;
5180
5181 /* This is a duplicate header file. We must change
5182 it to be an N_EXCL entry, and mark all the
5183 included symbols to prevent outputting them. */
5184 type = (int) N_EXCL;
5185
5186 nest = 0;
5187 for (incl_sym = sym + 1, incl_map = symbol_map + 1;
5188 incl_sym < sym_end;
5189 incl_sym++, incl_map++)
5190 {
5191 int incl_type;
5192
5193 incl_type = H_GET_8 (input_bfd, incl_sym->e_type);
5194 if (incl_type == (int) N_EINCL)
5195 {
5196 if (nest == 0)
5197 {
5198 *incl_map = -1;
5199 break;
5200 }
5201 --nest;
252b5132 5202 }
116c20d2
NC		 5203 else if (incl_type == (int) N_BINCL)
5204 ++nest;
5205 else if (nest == 0)
5206 *incl_map = -1;
252b5132 5207 }
252b5132
RH		 5208 }
5209 }
116c20d2
NC		 5210 }
5211
5212 /* Copy this symbol into the list of symbols we are going to
5213 write out. */
5214 H_PUT_8 (output_bfd, type, outsym->e_type);
5215 H_PUT_8 (output_bfd, H_GET_8 (input_bfd, sym->e_other), outsym->e_other);
5216 H_PUT_16 (output_bfd, H_GET_16 (input_bfd, sym->e_desc), outsym->e_desc);
5217 copy = FALSE;
57402f1e 5218 if (! flaginfo->info->keep_memory)
116c20d2
NC		 5219 {
5220 /* name points into a string table which we are going to
5221 free. If there is a hash table entry, use that string.
5222 Otherwise, copy name into memory. */
5223 if (h != NULL)
5224 name = h->root.root.string;
252b5132 5225 else
116c20d2
NC		 5226 copy = TRUE;
5227 }
57402f1e 5228 strtab_index = add_to_stringtab (output_bfd, flaginfo->strtab,
116c20d2
NC		 5229 name, copy);
5230 if (strtab_index == (bfd_size_type) -1)
5231 return FALSE;
5232 PUT_WORD (output_bfd, strtab_index, outsym->e_strx);
5233 PUT_WORD (output_bfd, val, outsym->e_value);
5234 *symbol_map = obj_aout_external_sym_count (output_bfd);
5235 ++obj_aout_external_sym_count (output_bfd);
5236 ++outsym;
5237 }
252b5132 5238
116c20d2 5239 /* Write out the output symbols we have just constructed. */
57402f1e 5240 if (outsym > flaginfo->output_syms)
116c20d2
NC		 5241 {
5242 bfd_size_type outsym_size;
252b5132 5243
57402f1e 5244 if (bfd_seek (output_bfd, flaginfo->symoff, SEEK_SET) != 0)
116c20d2 5245 return FALSE;
57402f1e 5246 outsym_size = outsym - flaginfo->output_syms;
116c20d2 5247 outsym_size *= EXTERNAL_NLIST_SIZE;
57402f1e 5248 if (bfd_bwrite ((void *) flaginfo->output_syms, outsym_size, output_bfd)
116c20d2
NC		 5249 != outsym_size)
5250 return FALSE;
57402f1e 5251 flaginfo->symoff += outsym_size;
116c20d2 5252 }
252b5132 5253
116c20d2
NC		 5254 return TRUE;
5255}
252b5132 5256
116c20d2 5257/* Link an a.out input BFD into the output file. */
252b5132 5258
116c20d2 5259static bfd_boolean
57402f1e 5260aout_link_input_bfd (struct aout_final_link_info *flaginfo, bfd *input_bfd)
116c20d2 5261{
116c20d2 5262 BFD_ASSERT (bfd_get_format (input_bfd) == bfd_object);
252b5132 5263
116c20d2
NC		 5264 /* If this is a dynamic object, it may need special handling. */
5265 if ((input_bfd->flags & DYNAMIC) != 0
5266 && aout_backend_info (input_bfd)->link_dynamic_object != NULL)
5267 return ((*aout_backend_info (input_bfd)->link_dynamic_object)
57402f1e 5268 (flaginfo->info, input_bfd));
252b5132 5269
116c20d2 5270 /* Get the symbols. We probably have them already, unless
57402f1e 5271 flaginfo->info->keep_memory is FALSE. */
116c20d2
NC		 5272 if (! aout_get_external_symbols (input_bfd))
5273 return FALSE;
252b5132 5274
116c20d2 5275 /* Write out the symbols and get a map of the new indices. The map
57402f1e
NC		 5276 is placed into flaginfo->symbol_map. */
5277 if (! aout_link_write_symbols (flaginfo, input_bfd))
116c20d2 5278 return FALSE;
252b5132 5279
116c20d2
NC		 5280 /* Relocate and write out the sections. These functions use the
5281 symbol map created by aout_link_write_symbols. The linker_mark
5282 field will be set if these sections are to be included in the
5283 link, which will normally be the case. */
5284 if (obj_textsec (input_bfd)->linker_mark)
5285 {
57402f1e 5286 if (! aout_link_input_section (flaginfo, input_bfd,
116c20d2 5287 obj_textsec (input_bfd),
57402f1e 5288 &flaginfo->treloff,
116c20d2
NC		 5289 exec_hdr (input_bfd)->a_trsize))
5290 return FALSE;
5291 }
5292 if (obj_datasec (input_bfd)->linker_mark)
5293 {
57402f1e 5294 if (! aout_link_input_section (flaginfo, input_bfd,
116c20d2 5295 obj_datasec (input_bfd),
57402f1e 5296 &flaginfo->dreloff,
116c20d2
NC		 5297 exec_hdr (input_bfd)->a_drsize))
5298 return FALSE;
5299 }
5300
5301 /* If we are not keeping memory, we don't need the symbols any
5302 longer. We still need them if we are keeping memory, because the
5303 strings in the hash table point into them. */
57402f1e 5304 if (! flaginfo->info->keep_memory)
116c20d2
NC		 5305 {
5306 if (! aout_link_free_symbols (input_bfd))
5307 return FALSE;
5308 }
5309
5310 return TRUE;
5311}
5312
5313/* Do the final link step. This is called on the output BFD. The
5314 INFO structure should point to a list of BFDs linked through the
c72f2fb2 5315 link.next field which can be used to find each BFD which takes part
116c20d2
NC		 5316 in the output. Also, each section in ABFD should point to a list
5317 of bfd_link_order structures which list all the input sections for
5318 the output section. */
5319
5320bfd_boolean
5321NAME (aout, final_link) (bfd *abfd,
5322 struct bfd_link_info *info,
5323 void (*callback) (bfd *, file_ptr *, file_ptr *, file_ptr *))
5324{
5325 struct aout_final_link_info aout_info;
5326 bfd_boolean includes_hash_initialized = FALSE;
5327 bfd *sub;
5328 bfd_size_type trsize, drsize;
5329 bfd_size_type max_contents_size;
5330 bfd_size_type max_relocs_size;
5331 bfd_size_type max_sym_count;
116c20d2
NC		 5332 struct bfd_link_order *p;
5333 asection *o;
5334 bfd_boolean have_link_order_relocs;
5335
0e1862bb 5336 if (bfd_link_pic (info))
116c20d2
NC		 5337 abfd->flags |= DYNAMIC;
5338
5339 aout_info.info = info;
5340 aout_info.output_bfd = abfd;
5341 aout_info.contents = NULL;
5342 aout_info.relocs = NULL;
5343 aout_info.symbol_map = NULL;
5344 aout_info.output_syms = NULL;
252b5132 5345
66eb6687
AM		 5346 if (!bfd_hash_table_init_n (&aout_info.includes.root,
5347 aout_link_includes_newfunc,
5348 sizeof (struct aout_link_includes_entry),
5349 251))
116c20d2
NC		 5350 goto error_return;
5351 includes_hash_initialized = TRUE;
252b5132 5352
116c20d2
NC		 5353 /* Figure out the largest section size. Also, if generating
5354 relocatable output, count the relocs. */
5355 trsize = 0;
5356 drsize = 0;
5357 max_contents_size = 0;
5358 max_relocs_size = 0;
5359 max_sym_count = 0;
c72f2fb2 5360 for (sub = info->input_bfds; sub != NULL; sub = sub->link.next)
116c20d2
NC		 5361 {
5362 bfd_size_type sz;
252b5132 5363
0e1862bb 5364 if (bfd_link_relocatable (info))
116c20d2
NC		 5365 {
5366 if (bfd_get_flavour (sub) == bfd_target_aout_flavour)
252b5132 5367 {
116c20d2
NC		 5368 trsize += exec_hdr (sub)->a_trsize;
5369 drsize += exec_hdr (sub)->a_drsize;
252b5132 5370 }
252b5132
RH		 5371 else
5372 {
116c20d2
NC		 5373 /* FIXME: We need to identify the .text and .data sections
5374 and call get_reloc_upper_bound and canonicalize_reloc to
5375 work out the number of relocs needed, and then multiply
5376 by the reloc size. */
5377 (*_bfd_error_handler)
5378 (_("%s: relocatable link from %s to %s not supported"),
5379 bfd_get_filename (abfd),
5380 sub->xvec->name, abfd->xvec->name);
5381 bfd_set_error (bfd_error_invalid_operation);
5382 goto error_return;
252b5132 5383 }
116c20d2 5384 }
252b5132 5385
116c20d2
NC		 5386 if (bfd_get_flavour (sub) == bfd_target_aout_flavour)
5387 {
5388 sz = obj_textsec (sub)->size;
5389 if (sz > max_contents_size)
5390 max_contents_size = sz;
5391 sz = obj_datasec (sub)->size;
5392 if (sz > max_contents_size)
5393 max_contents_size = sz;
252b5132 5394
116c20d2
NC		 5395 sz = exec_hdr (sub)->a_trsize;
5396 if (sz > max_relocs_size)
5397 max_relocs_size = sz;
5398 sz = exec_hdr (sub)->a_drsize;
5399 if (sz > max_relocs_size)
5400 max_relocs_size = sz;
252b5132 5401
116c20d2
NC		 5402 sz = obj_aout_external_sym_count (sub);
5403 if (sz > max_sym_count)
5404 max_sym_count = sz;
252b5132
RH		 5405 }
5406 }
5407
0e1862bb 5408 if (bfd_link_relocatable (info))
116c20d2
NC		 5409 {
5410 if (obj_textsec (abfd) != NULL)
5411 trsize += (_bfd_count_link_order_relocs (obj_textsec (abfd)
8423293d 5412 ->map_head.link_order)
116c20d2
NC		 5413 * obj_reloc_entry_size (abfd));
5414 if (obj_datasec (abfd) != NULL)
5415 drsize += (_bfd_count_link_order_relocs (obj_datasec (abfd)
8423293d 5416 ->map_head.link_order)
116c20d2
NC		 5417 * obj_reloc_entry_size (abfd));
5418 }
252b5132 5419
116c20d2
NC		 5420 exec_hdr (abfd)->a_trsize = trsize;
5421 exec_hdr (abfd)->a_drsize = drsize;
252b5132 5422
116c20d2 5423 exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd);
252b5132 5424
116c20d2
NC		 5425 /* Adjust the section sizes and vmas according to the magic number.
5426 This sets a_text, a_data and a_bss in the exec_hdr and sets the
5427 filepos for each section. */
3a8c4a5b 5428 if (! NAME (aout, adjust_sizes_and_vmas) (abfd))
116c20d2 5429 goto error_return;
252b5132 5430
116c20d2
NC		 5431 /* The relocation and symbol file positions differ among a.out
5432 targets. We are passed a callback routine from the backend
5433 specific code to handle this.
5434 FIXME: At this point we do not know how much space the symbol
5435 table will require. This will not work for any (nonstandard)
5436 a.out target that needs to know the symbol table size before it
5437 can compute the relocation file positions. This may or may not
5438 be the case for the hp300hpux target, for example. */
5439 (*callback) (abfd, &aout_info.treloff, &aout_info.dreloff,
5440 &aout_info.symoff);
5441 obj_textsec (abfd)->rel_filepos = aout_info.treloff;
5442 obj_datasec (abfd)->rel_filepos = aout_info.dreloff;
5443 obj_sym_filepos (abfd) = aout_info.symoff;
252b5132 5444
116c20d2
NC		 5445 /* We keep a count of the symbols as we output them. */
5446 obj_aout_external_sym_count (abfd) = 0;
5447
5448 /* We accumulate the string table as we write out the symbols. */
5449 aout_info.strtab = _bfd_stringtab_init ();
5450 if (aout_info.strtab == NULL)
5451 goto error_return;
5452
5453 /* Allocate buffers to hold section contents and relocs. */
a50b1753 5454 aout_info.contents = (bfd_byte *) bfd_malloc (max_contents_size);
116c20d2 5455 aout_info.relocs = bfd_malloc (max_relocs_size);
c38eb2a6 5456 aout_info.symbol_map = (int *) bfd_malloc (max_sym_count * sizeof (int));
a50b1753
NC		 5457 aout_info.output_syms = (struct external_nlist *)
5458 bfd_malloc ((max_sym_count + 1) * sizeof (struct external_nlist));
116c20d2
NC		 5459 if ((aout_info.contents == NULL && max_contents_size != 0)
5460 || (aout_info.relocs == NULL && max_relocs_size != 0)
5461 || (aout_info.symbol_map == NULL && max_sym_count != 0)
5462 || aout_info.output_syms == NULL)
5463 goto error_return;
5464
5465 /* If we have a symbol named __DYNAMIC, force it out now. This is
5466 required by SunOS. Doing this here rather than in sunos.c is a
5467 hack, but it's easier than exporting everything which would be
5468 needed. */
5469 {
5470 struct aout_link_hash_entry *h;
5471
5472 h = aout_link_hash_lookup (aout_hash_table (info), "__DYNAMIC",
5473 FALSE, FALSE, FALSE);
5474 if (h != NULL)
7686d77d 5475 aout_link_write_other_symbol (&h->root.root, &aout_info);
116c20d2
NC		 5476 }
5477
5478 /* The most time efficient way to do the link would be to read all
5479 the input object files into memory and then sort out the
5480 information into the output file. Unfortunately, that will
5481 probably use too much memory. Another method would be to step
5482 through everything that composes the text section and write it
5483 out, and then everything that composes the data section and write
5484 it out, and then write out the relocs, and then write out the
5485 symbols. Unfortunately, that requires reading stuff from each
5486 input file several times, and we will not be able to keep all the
5487 input files open simultaneously, and reopening them will be slow.
5488
5489 What we do is basically process one input file at a time. We do
5490 everything we need to do with an input file once--copy over the
5491 section contents, handle the relocation information, and write
5492 out the symbols--and then we throw away the information we read
5493 from it. This approach requires a lot of lseeks of the output
5494 file, which is unfortunate but still faster than reopening a lot
5495 of files.
5496
5497 We use the output_has_begun field of the input BFDs to see
5498 whether we have already handled it. */
c72f2fb2 5499 for (sub = info->input_bfds; sub != NULL; sub = sub->link.next)
116c20d2 5500 sub->output_has_begun = FALSE;
252b5132 5501
116c20d2
NC		 5502 /* Mark all sections which are to be included in the link. This
5503 will normally be every section. We need to do this so that we
5504 can identify any sections which the linker has decided to not
5505 include. */
5506 for (o = abfd->sections; o != NULL; o = o->next)
252b5132 5507 {
8423293d 5508 for (p = o->map_head.link_order; p != NULL; p = p->next)
116c20d2
NC		 5509 if (p->type == bfd_indirect_link_order)
5510 p->u.indirect.section->linker_mark = TRUE;
252b5132
RH		 5511 }
5512
116c20d2
NC		 5513 have_link_order_relocs = FALSE;
5514 for (o = abfd->sections; o != NULL; o = o->next)
252b5132 5515 {
8423293d 5516 for (p = o->map_head.link_order;
116c20d2
NC		 5517 p != NULL;
5518 p = p->next)
252b5132 5519 {
116c20d2
NC		 5520 if (p->type == bfd_indirect_link_order
5521 && (bfd_get_flavour (p->u.indirect.section->owner)
5522 == bfd_target_aout_flavour))
252b5132 5523 {
116c20d2
NC		 5524 bfd *input_bfd;
5525
5526 input_bfd = p->u.indirect.section->owner;
5527 if (! input_bfd->output_has_begun)
252b5132 5528 {
116c20d2
NC		 5529 if (! aout_link_input_bfd (&aout_info, input_bfd))
5530 goto error_return;
5531 input_bfd->output_has_begun = TRUE;
252b5132 5532 }
252b5132 5533 }
116c20d2
NC		 5534 else if (p->type == bfd_section_reloc_link_order
5535 || p->type == bfd_symbol_reloc_link_order)
5536 {
5537 /* These are handled below. */
5538 have_link_order_relocs = TRUE;
5539 }
5540 else
5541 {
5542 if (! _bfd_default_link_order (abfd, info, o, p))
5543 goto error_return;
5544 }
252b5132
RH		 5545 }
5546 }
252b5132 5547
116c20d2 5548 /* Write out any symbols that we have not already written out. */
7686d77d
AM		 5549 bfd_hash_traverse (&info->hash->table,
5550 aout_link_write_other_symbol,
5551 &aout_info);
116c20d2
NC		 5552
5553 /* Now handle any relocs we were asked to create by the linker.
5554 These did not come from any input file. We must do these after
5555 we have written out all the symbols, so that we know the symbol
5556 indices to use. */
5557 if (have_link_order_relocs)
5558 {
5559 for (o = abfd->sections; o != NULL; o = o->next)
252b5132 5560 {
8423293d 5561 for (p = o->map_head.link_order;
116c20d2
NC		 5562 p != NULL;
5563 p = p->next)
5564 {
5565 if (p->type == bfd_section_reloc_link_order
5566 || p->type == bfd_symbol_reloc_link_order)
5567 {
5568 if (! aout_link_reloc_link_order (&aout_info, o, p))
5569 goto error_return;
5570 }
5571 }
252b5132 5572 }
116c20d2 5573 }
252b5132 5574
116c20d2
NC		 5575 if (aout_info.contents != NULL)
5576 {
5577 free (aout_info.contents);
5578 aout_info.contents = NULL;
5579 }
5580 if (aout_info.relocs != NULL)
5581 {
5582 free (aout_info.relocs);
5583 aout_info.relocs = NULL;
5584 }
5585 if (aout_info.symbol_map != NULL)
5586 {
5587 free (aout_info.symbol_map);
5588 aout_info.symbol_map = NULL;
5589 }
5590 if (aout_info.output_syms != NULL)
5591 {
5592 free (aout_info.output_syms);
5593 aout_info.output_syms = NULL;
5594 }
5595 if (includes_hash_initialized)
5596 {
5597 bfd_hash_table_free (&aout_info.includes.root);
5598 includes_hash_initialized = FALSE;
5599 }
252b5132 5600
116c20d2
NC		 5601 /* Finish up any dynamic linking we may be doing. */
5602 if (aout_backend_info (abfd)->finish_dynamic_link != NULL)
5603 {
5604 if (! (*aout_backend_info (abfd)->finish_dynamic_link) (abfd, info))
5605 goto error_return;
252b5132
RH		 5606 }
5607
116c20d2
NC		 5608 /* Update the header information. */
5609 abfd->symcount = obj_aout_external_sym_count (abfd);
5610 exec_hdr (abfd)->a_syms = abfd->symcount * EXTERNAL_NLIST_SIZE;
5611 obj_str_filepos (abfd) = obj_sym_filepos (abfd) + exec_hdr (abfd)->a_syms;
5612 obj_textsec (abfd)->reloc_count =
5613 exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd);
5614 obj_datasec (abfd)->reloc_count =
5615 exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd);
252b5132 5616
116c20d2 5617 /* Write out the string table, unless there are no symbols. */
f6e688f7
AM		 5618 if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0)
5619 goto error_return;
116c20d2
NC		 5620 if (abfd->symcount > 0)
5621 {
f6e688f7 5622 if (!emit_stringtab (abfd, aout_info.strtab))
116c20d2
NC		 5623 goto error_return;
5624 }
f6e688f7 5625 else
116c20d2 5626 {
f6e688f7 5627 bfd_byte b[BYTES_IN_WORD];
252b5132 5628
f6e688f7
AM		 5629 memset (b, 0, BYTES_IN_WORD);
5630 if (bfd_bwrite (b, (bfd_size_type) BYTES_IN_WORD, abfd) != BYTES_IN_WORD)
116c20d2
NC		 5631 goto error_return;
5632 }
252b5132 5633
b34976b6 5634 return TRUE;
116c20d2
NC		 5635
5636 error_return:
5637 if (aout_info.contents != NULL)
5638 free (aout_info.contents);
5639 if (aout_info.relocs != NULL)
5640 free (aout_info.relocs);
5641 if (aout_info.symbol_map != NULL)
5642 free (aout_info.symbol_map);
5643 if (aout_info.output_syms != NULL)
5644 free (aout_info.output_syms);
5645 if (includes_hash_initialized)
5646 bfd_hash_table_free (&aout_info.includes.root);
5647 return FALSE;
252b5132 5648}
GDB Binutils - Deliverables
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