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Fix a seg-fault in the linker when it encounters a corrupt binary containing a reloc...
[deliverable/binutils-gdb.git] / bfd / aoutx.h
CommitLineData
252b5132 1/* BFD semi-generic back-end for a.out binaries.
6f2750fe 2 Copyright (C) 1990-2016 Free Software Foundation, Inc.
252b5132
RH		 3 Written by Cygnus Support.
4
f7c33884 5 This file is part of BFD, the Binary File Descriptor library.
252b5132 6
f7c33884
NC		 7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
cd123cb7 9 the Free Software Foundation; either version 3 of the License, or
f7c33884 10 (at your option) any later version.
252b5132 11
f7c33884
NC		 12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
252b5132 16
f7c33884
NC		 17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
cd123cb7
NC		 19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
252b5132
RH		 21
22/*
23SECTION
24 a.out backends
25
252b5132
RH		 26DESCRIPTION
27
28 BFD supports a number of different flavours of a.out format,
29 though the major differences are only the sizes of the
30 structures on disk, and the shape of the relocation
31 information.
32
33 The support is split into a basic support file @file{aoutx.h}
34 and other files which derive functions from the base. One
35 derivation file is @file{aoutf1.h} (for a.out flavour 1), and
36 adds to the basic a.out functions support for sun3, sun4, 386
37 and 29k a.out files, to create a target jump vector for a
38 specific target.
39
40 This information is further split out into more specific files
41 for each machine, including @file{sunos.c} for sun3 and sun4,
42 @file{newsos3.c} for the Sony NEWS, and @file{demo64.c} for a
43 demonstration of a 64 bit a.out format.
44
45 The base file @file{aoutx.h} defines general mechanisms for
46 reading and writing records to and from disk and various
47 other methods which BFD requires. It is included by
48 @file{aout32.c} and @file{aout64.c} to form the names
49 <<aout_32_swap_exec_header_in>>, <<aout_64_swap_exec_header_in>>, etc.
50
51 As an example, this is what goes on to make the back end for a
52 sun4, from @file{aout32.c}:
53
54| #define ARCH_SIZE 32
55| #include "aoutx.h"
56
57 Which exports names:
58
59| ...
60| aout_32_canonicalize_reloc
61| aout_32_find_nearest_line
62| aout_32_get_lineno
63| aout_32_get_reloc_upper_bound
64| ...
65
66 from @file{sunos.c}:
67
68| #define TARGET_NAME "a.out-sunos-big"
6d00b590 69| #define VECNAME sparc_aout_sunos_be_vec
252b5132
RH		 70| #include "aoutf1.h"
71
72 requires all the names from @file{aout32.c}, and produces the jump vector
73
6d00b590 74| sparc_aout_sunos_be_vec
252b5132
RH		 75
76 The file @file{host-aout.c} is a special case. It is for a large set
77 of hosts that use ``more or less standard'' a.out files, and
78 for which cross-debugging is not interesting. It uses the
79 standard 32-bit a.out support routines, but determines the
80 file offsets and addresses of the text, data, and BSS
81 sections, the machine architecture and machine type, and the
82 entry point address, in a host-dependent manner. Once these
83 values have been determined, generic code is used to handle
84 the object file.
85
86 When porting it to run on a new system, you must supply:
87
88| HOST_PAGE_SIZE
89| HOST_SEGMENT_SIZE
90| HOST_MACHINE_ARCH (optional)
91| HOST_MACHINE_MACHINE (optional)
92| HOST_TEXT_START_ADDR
93| HOST_STACK_END_ADDR
94
95 in the file @file{../include/sys/h-@var{XXX}.h} (for your host). These
96 values, plus the structures and macros defined in @file{a.out.h} on
97 your host system, will produce a BFD target that will access
98 ordinary a.out files on your host. To configure a new machine
99 to use @file{host-aout.c}, specify:
100
101| TDEFAULTS = -DDEFAULT_VECTOR=host_aout_big_vec
102| TDEPFILES= host-aout.o trad-core.o
103
1110793a 104 in the @file{config/@var{XXX}.mt} file, and modify @file{configure.ac}
252b5132
RH		 105 to use the
106 @file{@var{XXX}.mt} file (by setting "<<bfd_target=XXX>>") when your
5ed6aba4 107 configuration is selected. */
252b5132
RH		 108
109/* Some assumptions:
110 * Any BFD with D_PAGED set is ZMAGIC, and vice versa.
111 Doesn't matter what the setting of WP_TEXT is on output, but it'll
112 get set on input.
113 * Any BFD with D_PAGED clear and WP_TEXT set is NMAGIC.
114 * Any BFD with both flags clear is OMAGIC.
115 (Just want to make these explicit, so the conditions tested in this
116 file make sense if you're more familiar with a.out than with BFD.) */
117
118#define KEEPIT udata.i
119
252b5132 120#include "sysdep.h"
3db64b00 121#include "bfd.h"
3882b010 122#include "safe-ctype.h"
252b5132
RH		 123#include "bfdlink.h"
124
125#include "libaout.h"
126#include "libbfd.h"
127#include "aout/aout64.h"
128#include "aout/stab_gnu.h"
129#include "aout/ar.h"
130
252b5132
RH		 131/*
132SUBSECTION
133 Relocations
134
135DESCRIPTION
136 The file @file{aoutx.h} provides for both the @emph{standard}
137 and @emph{extended} forms of a.out relocation records.
138
139 The standard records contain only an
140 address, a symbol index, and a type field. The extended records
141 (used on 29ks and sparcs) also have a full integer for an
5ed6aba4 142 addend. */
252b5132 143
252b5132
RH		 144#ifndef CTOR_TABLE_RELOC_HOWTO
145#define CTOR_TABLE_RELOC_IDX 2
923f08ff
AM		 146#define CTOR_TABLE_RELOC_HOWTO(BFD) \
147 ((obj_reloc_entry_size (BFD) == RELOC_EXT_SIZE \
148 ? howto_table_ext : howto_table_std) \
149 + CTOR_TABLE_RELOC_IDX)
252b5132
RH		 150#endif
151
152#ifndef MY_swap_std_reloc_in
116c20d2 153#define MY_swap_std_reloc_in NAME (aout, swap_std_reloc_in)
252b5132
RH		 154#endif
155
1642229e 156#ifndef MY_swap_ext_reloc_in
116c20d2 157#define MY_swap_ext_reloc_in NAME (aout, swap_ext_reloc_in)
1642229e
HPN		 158#endif
159
252b5132 160#ifndef MY_swap_std_reloc_out
116c20d2 161#define MY_swap_std_reloc_out NAME (aout, swap_std_reloc_out)
252b5132
RH		 162#endif
163
1642229e 164#ifndef MY_swap_ext_reloc_out
116c20d2 165#define MY_swap_ext_reloc_out NAME (aout, swap_ext_reloc_out)
1642229e
HPN		 166#endif
167
252b5132
RH		 168#ifndef MY_final_link_relocate
169#define MY_final_link_relocate _bfd_final_link_relocate
170#endif
171
172#ifndef MY_relocate_contents
173#define MY_relocate_contents _bfd_relocate_contents
174#endif
175
116c20d2
NC		 176#define howto_table_ext NAME (aout, ext_howto_table)
177#define howto_table_std NAME (aout, std_howto_table)
252b5132
RH		 178
179reloc_howto_type howto_table_ext[] =
180{
116c20d2
NC		 181 /* Type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone. */
182 HOWTO (RELOC_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, 0, "8", FALSE, 0, 0x000000ff, FALSE),
183 HOWTO (RELOC_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, 0, "16", FALSE, 0, 0x0000ffff, FALSE),
184 HOWTO (RELOC_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, 0, "32", FALSE, 0, 0xffffffff, FALSE),
185 HOWTO (RELOC_DISP8, 0, 0, 8, TRUE, 0, complain_overflow_signed, 0, "DISP8", FALSE, 0, 0x000000ff, FALSE),
186 HOWTO (RELOC_DISP16, 0, 1, 16, TRUE, 0, complain_overflow_signed, 0, "DISP16", FALSE, 0, 0x0000ffff, FALSE),
187 HOWTO (RELOC_DISP32, 0, 2, 32, TRUE, 0, complain_overflow_signed, 0, "DISP32", FALSE, 0, 0xffffffff, FALSE),
188 HOWTO (RELOC_WDISP30, 2, 2, 30, TRUE, 0, complain_overflow_signed, 0, "WDISP30", FALSE, 0, 0x3fffffff, FALSE),
189 HOWTO (RELOC_WDISP22, 2, 2, 22, TRUE, 0, complain_overflow_signed, 0, "WDISP22", FALSE, 0, 0x003fffff, FALSE),
190 HOWTO (RELOC_HI22, 10, 2, 22, FALSE, 0, complain_overflow_bitfield, 0, "HI22", FALSE, 0, 0x003fffff, FALSE),
191 HOWTO (RELOC_22, 0, 2, 22, FALSE, 0, complain_overflow_bitfield, 0, "22", FALSE, 0, 0x003fffff, FALSE),
192 HOWTO (RELOC_13, 0, 2, 13, FALSE, 0, complain_overflow_bitfield, 0, "13", FALSE, 0, 0x00001fff, FALSE),
193 HOWTO (RELOC_LO10, 0, 2, 10, FALSE, 0, complain_overflow_dont, 0, "LO10", FALSE, 0, 0x000003ff, FALSE),
194 HOWTO (RELOC_SFA_BASE,0, 2, 32, FALSE, 0, complain_overflow_bitfield, 0, "SFA_BASE", FALSE, 0, 0xffffffff, FALSE),
195 HOWTO (RELOC_SFA_OFF13,0, 2, 32, FALSE, 0, complain_overflow_bitfield, 0, "SFA_OFF13", FALSE, 0, 0xffffffff, FALSE),
196 HOWTO (RELOC_BASE10, 0, 2, 10, FALSE, 0, complain_overflow_dont, 0, "BASE10", FALSE, 0, 0x000003ff, FALSE),
197 HOWTO (RELOC_BASE13, 0, 2, 13, FALSE, 0, complain_overflow_signed, 0, "BASE13", FALSE, 0, 0x00001fff, FALSE),
198 HOWTO (RELOC_BASE22, 10, 2, 22, FALSE, 0, complain_overflow_bitfield, 0, "BASE22", FALSE, 0, 0x003fffff, FALSE),
199 HOWTO (RELOC_PC10, 0, 2, 10, TRUE, 0, complain_overflow_dont, 0, "PC10", FALSE, 0, 0x000003ff, TRUE),
200 HOWTO (RELOC_PC22, 10, 2, 22, TRUE, 0, complain_overflow_signed, 0, "PC22", FALSE, 0, 0x003fffff, TRUE),
201 HOWTO (RELOC_JMP_TBL, 2, 2, 30, TRUE, 0, complain_overflow_signed, 0, "JMP_TBL", FALSE, 0, 0x3fffffff, FALSE),
202 HOWTO (RELOC_SEGOFF16,0, 2, 0, FALSE, 0, complain_overflow_bitfield, 0, "SEGOFF16", FALSE, 0, 0x00000000, FALSE),
203 HOWTO (RELOC_GLOB_DAT,0, 2, 0, FALSE, 0, complain_overflow_bitfield, 0, "GLOB_DAT", FALSE, 0, 0x00000000, FALSE),
204 HOWTO (RELOC_JMP_SLOT,0, 2, 0, FALSE, 0, complain_overflow_bitfield, 0, "JMP_SLOT", FALSE, 0, 0x00000000, FALSE),
205 HOWTO (RELOC_RELATIVE,0, 2, 0, FALSE, 0, complain_overflow_bitfield, 0, "RELATIVE", FALSE, 0, 0x00000000, FALSE),
6346d5ca
AM		 206 HOWTO (0, 0, 3, 0, FALSE, 0, complain_overflow_dont, 0, "R_SPARC_NONE",FALSE, 0, 0x00000000, TRUE),
207 HOWTO (0, 0, 3, 0, FALSE, 0, complain_overflow_dont, 0, "R_SPARC_NONE",FALSE, 0, 0x00000000, TRUE),
252b5132 208#define RELOC_SPARC_REV32 RELOC_WDISP19
116c20d2 209 HOWTO (RELOC_SPARC_REV32, 0, 2, 32, FALSE, 0, complain_overflow_dont, 0,"R_SPARC_REV32",FALSE, 0, 0xffffffff, FALSE),
252b5132
RH		 210};
211
212/* Convert standard reloc records to "arelent" format (incl byte swap). */
213
5ed6aba4
NC		 214reloc_howto_type howto_table_std[] =
215{
f7c33884 216 /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone. */
b34976b6
AM		 217HOWTO ( 0, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,0,"8", TRUE, 0x000000ff,0x000000ff, FALSE),
218HOWTO ( 1, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,0,"16", TRUE, 0x0000ffff,0x0000ffff, FALSE),
219HOWTO ( 2, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,0,"32", TRUE, 0xffffffff,0xffffffff, FALSE),
220HOWTO ( 3, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,0,"64", TRUE, 0xdeaddead,0xdeaddead, FALSE),
221HOWTO ( 4, 0, 0, 8, TRUE, 0, complain_overflow_signed, 0,"DISP8", TRUE, 0x000000ff,0x000000ff, FALSE),
222HOWTO ( 5, 0, 1, 16, TRUE, 0, complain_overflow_signed, 0,"DISP16", TRUE, 0x0000ffff,0x0000ffff, FALSE),
223HOWTO ( 6, 0, 2, 32, TRUE, 0, complain_overflow_signed, 0,"DISP32", TRUE, 0xffffffff,0xffffffff, FALSE),
224HOWTO ( 7, 0, 4, 64, TRUE, 0, complain_overflow_signed, 0,"DISP64", TRUE, 0xfeedface,0xfeedface, FALSE),
225HOWTO ( 8, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"GOT_REL", FALSE, 0,0x00000000, FALSE),
226HOWTO ( 9, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,0,"BASE16", FALSE,0xffffffff,0xffffffff, FALSE),
227HOWTO (10, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,0,"BASE32", FALSE,0xffffffff,0xffffffff, FALSE),
5f771d47
ILT		 228EMPTY_HOWTO (-1),
229EMPTY_HOWTO (-1),
230EMPTY_HOWTO (-1),
231EMPTY_HOWTO (-1),
232EMPTY_HOWTO (-1),
b34976b6 233 HOWTO (16, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"JMP_TABLE", FALSE, 0,0x00000000, FALSE),
5f771d47
ILT		 234EMPTY_HOWTO (-1),
235EMPTY_HOWTO (-1),
236EMPTY_HOWTO (-1),
237EMPTY_HOWTO (-1),
238EMPTY_HOWTO (-1),
239EMPTY_HOWTO (-1),
240EMPTY_HOWTO (-1),
241EMPTY_HOWTO (-1),
242EMPTY_HOWTO (-1),
243EMPTY_HOWTO (-1),
244EMPTY_HOWTO (-1),
245EMPTY_HOWTO (-1),
246EMPTY_HOWTO (-1),
247EMPTY_HOWTO (-1),
248EMPTY_HOWTO (-1),
b34976b6 249 HOWTO (32, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"RELATIVE", FALSE, 0,0x00000000, FALSE),
5f771d47
ILT		 250EMPTY_HOWTO (-1),
251EMPTY_HOWTO (-1),
252EMPTY_HOWTO (-1),
253EMPTY_HOWTO (-1),
254EMPTY_HOWTO (-1),
255EMPTY_HOWTO (-1),
256EMPTY_HOWTO (-1),
b34976b6 257 HOWTO (40, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"BASEREL", FALSE, 0,0x00000000, FALSE),
252b5132
RH		 258};
259
923f08ff 260#define TABLE_SIZE(TABLE) (sizeof (TABLE) / sizeof (TABLE[0]))
252b5132
RH		 261
262reloc_howto_type *
116c20d2 263NAME (aout, reloc_type_lookup) (bfd *abfd, bfd_reloc_code_real_type code)
252b5132 264{
116c20d2
NC		 265#define EXT(i, j) case i: return & howto_table_ext [j]
266#define STD(i, j) case i: return & howto_table_std [j]
252b5132 267 int ext = obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE;
f7c33884 268
252b5132 269 if (code == BFD_RELOC_CTOR)
30d10e9e 270 switch (bfd_arch_bits_per_address (abfd))
252b5132
RH		 271 {
272 case 32:
273 code = BFD_RELOC_32;
274 break;
275 case 64:
276 code = BFD_RELOC_64;
277 break;
278 }
f7c33884 279
252b5132
RH		 280 if (ext)
281 switch (code)
282 {
1642229e
HPN		 283 EXT (BFD_RELOC_8, 0);
284 EXT (BFD_RELOC_16, 1);
252b5132
RH		 285 EXT (BFD_RELOC_32, 2);
286 EXT (BFD_RELOC_HI22, 8);
287 EXT (BFD_RELOC_LO10, 11);
288 EXT (BFD_RELOC_32_PCREL_S2, 6);
289 EXT (BFD_RELOC_SPARC_WDISP22, 7);
290 EXT (BFD_RELOC_SPARC13, 10);
291 EXT (BFD_RELOC_SPARC_GOT10, 14);
292 EXT (BFD_RELOC_SPARC_BASE13, 15);
293 EXT (BFD_RELOC_SPARC_GOT13, 15);
294 EXT (BFD_RELOC_SPARC_GOT22, 16);
295 EXT (BFD_RELOC_SPARC_PC10, 17);
296 EXT (BFD_RELOC_SPARC_PC22, 18);
297 EXT (BFD_RELOC_SPARC_WPLT30, 19);
298 EXT (BFD_RELOC_SPARC_REV32, 26);
116c20d2
NC		 299 default:
300 return NULL;
252b5132
RH		 301 }
302 else
f7c33884 303 /* std relocs. */
252b5132
RH		 304 switch (code)
305 {
2846975a 306 STD (BFD_RELOC_8, 0);
252b5132
RH		 307 STD (BFD_RELOC_16, 1);
308 STD (BFD_RELOC_32, 2);
309 STD (BFD_RELOC_8_PCREL, 4);
310 STD (BFD_RELOC_16_PCREL, 5);
311 STD (BFD_RELOC_32_PCREL, 6);
312 STD (BFD_RELOC_16_BASEREL, 9);
313 STD (BFD_RELOC_32_BASEREL, 10);
116c20d2
NC		 314 default:
315 return NULL;
252b5132
RH		 316 }
317}
318
157090f7
AM		 319reloc_howto_type *
320NAME (aout, reloc_name_lookup) (bfd *abfd, const char *r_name)
321{
322 unsigned int i, size;
323 reloc_howto_type *howto_table;
324
325 if (obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE)
326 {
327 howto_table = howto_table_ext;
328 size = sizeof (howto_table_ext) / sizeof (howto_table_ext[0]);
329 }
330 else
331 {
332 howto_table = howto_table_std;
333 size = sizeof (howto_table_std) / sizeof (howto_table_std[0]);
334 }
335
336 for (i = 0; i < size; i++)
337 if (howto_table[i].name != NULL
338 && strcasecmp (howto_table[i].name, r_name) == 0)
339 return &howto_table[i];
340
341 return NULL;
342}
343
252b5132
RH		 344/*
345SUBSECTION
346 Internal entry points
347
348DESCRIPTION
349 @file{aoutx.h} exports several routines for accessing the
350 contents of an a.out file, which are gathered and exported in
351 turn by various format specific files (eg sunos.c).
252b5132
RH		 352*/
353
354/*
355FUNCTION
356 aout_@var{size}_swap_exec_header_in
357
358SYNOPSIS
359 void aout_@var{size}_swap_exec_header_in,
360 (bfd *abfd,
116c20d2 361 struct external_exec *bytes,
252b5132
RH		 362 struct internal_exec *execp);
363
364DESCRIPTION
365 Swap the information in an executable header @var{raw_bytes} taken
366 from a raw byte stream memory image into the internal exec header
367 structure @var{execp}.
368*/
369
370#ifndef NAME_swap_exec_header_in
371void
116c20d2
NC		 372NAME (aout, swap_exec_header_in) (bfd *abfd,
373 struct external_exec *bytes,
374 struct internal_exec *execp)
252b5132 375{
252b5132
RH		 376 /* The internal_exec structure has some fields that are unused in this
377 configuration (IE for i960), so ensure that all such uninitialized
378 fields are zero'd out. There are places where two of these structs
0ef5a5bd 379 are memcmp'd, and thus the contents do matter. */
116c20d2 380 memset ((void *) execp, 0, sizeof (struct internal_exec));
252b5132 381 /* Now fill in fields in the execp, from the bytes in the raw data. */
dc810e39 382 execp->a_info = H_GET_32 (abfd, bytes->e_info);
252b5132
RH		 383 execp->a_text = GET_WORD (abfd, bytes->e_text);
384 execp->a_data = GET_WORD (abfd, bytes->e_data);
385 execp->a_bss = GET_WORD (abfd, bytes->e_bss);
386 execp->a_syms = GET_WORD (abfd, bytes->e_syms);
387 execp->a_entry = GET_WORD (abfd, bytes->e_entry);
388 execp->a_trsize = GET_WORD (abfd, bytes->e_trsize);
389 execp->a_drsize = GET_WORD (abfd, bytes->e_drsize);
390}
116c20d2 391#define NAME_swap_exec_header_in NAME (aout, swap_exec_header_in)
252b5132
RH		 392#endif
393
394/*
395FUNCTION
396 aout_@var{size}_swap_exec_header_out
397
398SYNOPSIS
399 void aout_@var{size}_swap_exec_header_out
400 (bfd *abfd,
401 struct internal_exec *execp,
402 struct external_exec *raw_bytes);
403
404DESCRIPTION
405 Swap the information in an internal exec header structure
406 @var{execp} into the buffer @var{raw_bytes} ready for writing to disk.
407*/
408void
116c20d2
NC		 409NAME (aout, swap_exec_header_out) (bfd *abfd,
410 struct internal_exec *execp,
411 struct external_exec *bytes)
252b5132 412{
0ef5a5bd 413 /* Now fill in fields in the raw data, from the fields in the exec struct. */
dc810e39 414 H_PUT_32 (abfd, execp->a_info , bytes->e_info);
252b5132
RH		 415 PUT_WORD (abfd, execp->a_text , bytes->e_text);
416 PUT_WORD (abfd, execp->a_data , bytes->e_data);
417 PUT_WORD (abfd, execp->a_bss , bytes->e_bss);
418 PUT_WORD (abfd, execp->a_syms , bytes->e_syms);
419 PUT_WORD (abfd, execp->a_entry , bytes->e_entry);
420 PUT_WORD (abfd, execp->a_trsize, bytes->e_trsize);
421 PUT_WORD (abfd, execp->a_drsize, bytes->e_drsize);
422}
423
424/* Make all the section for an a.out file. */
425
b34976b6 426bfd_boolean
116c20d2 427NAME (aout, make_sections) (bfd *abfd)
252b5132 428{
116c20d2 429 if (obj_textsec (abfd) == NULL && bfd_make_section (abfd, ".text") == NULL)
b34976b6 430 return FALSE;
116c20d2 431 if (obj_datasec (abfd) == NULL && bfd_make_section (abfd, ".data") == NULL)
b34976b6 432 return FALSE;
116c20d2 433 if (obj_bsssec (abfd) == NULL && bfd_make_section (abfd, ".bss") == NULL)
b34976b6
AM		 434 return FALSE;
435 return TRUE;
252b5132
RH		 436}
437
438/*
439FUNCTION
440 aout_@var{size}_some_aout_object_p
441
442SYNOPSIS
443 const bfd_target *aout_@var{size}_some_aout_object_p
444 (bfd *abfd,
116c20d2
NC		 445 struct internal_exec *execp,
446 const bfd_target *(*callback_to_real_object_p) (bfd *));
252b5132
RH		 447
448DESCRIPTION
449 Some a.out variant thinks that the file open in @var{abfd}
450 checking is an a.out file. Do some more checking, and set up
451 for access if it really is. Call back to the calling
452 environment's "finish up" function just before returning, to
453 handle any last-minute setup.
454*/
455
456const bfd_target *
116c20d2
NC		 457NAME (aout, some_aout_object_p) (bfd *abfd,
458 struct internal_exec *execp,
459 const bfd_target *(*callback_to_real_object_p) (bfd *))
252b5132
RH		 460{
461 struct aout_data_struct *rawptr, *oldrawptr;
462 const bfd_target *result;
116c20d2 463 bfd_size_type amt = sizeof (* rawptr);
252b5132 464
a50b1753 465 rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, amt);
252b5132 466 if (rawptr == NULL)
116c20d2 467 return NULL;
252b5132
RH		 468
469 oldrawptr = abfd->tdata.aout_data;
470 abfd->tdata.aout_data = rawptr;
471
472 /* Copy the contents of the old tdata struct.
473 In particular, we want the subformat, since for hpux it was set in
474 hp300hpux.c:swap_exec_header_in and will be used in
475 hp300hpux.c:callback. */
476 if (oldrawptr != NULL)
477 *abfd->tdata.aout_data = *oldrawptr;
478
479 abfd->tdata.aout_data->a.hdr = &rawptr->e;
f7c33884
NC		 480 /* Copy in the internal_exec struct. */
481 *(abfd->tdata.aout_data->a.hdr) = *execp;
252b5132
RH		 482 execp = abfd->tdata.aout_data->a.hdr;
483
f7c33884 484 /* Set the file flags. */
252b5132
RH		 485 abfd->flags = BFD_NO_FLAGS;
486 if (execp->a_drsize || execp->a_trsize)
487 abfd->flags |= HAS_RELOC;
f7c33884 488 /* Setting of EXEC_P has been deferred to the bottom of this function. */
252b5132
RH		 489 if (execp->a_syms)
490 abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS;
bbb1afc8 491 if (N_DYNAMIC (execp))
252b5132
RH		 492 abfd->flags |= DYNAMIC;
493
bbb1afc8 494 if (N_MAGIC (execp) == ZMAGIC)
252b5132
RH		 495 {
496 abfd->flags |= D_PAGED | WP_TEXT;
497 adata (abfd).magic = z_magic;
498 }
bbb1afc8 499 else if (N_MAGIC (execp) == QMAGIC)
252b5132
RH		 500 {
501 abfd->flags |= D_PAGED | WP_TEXT;
502 adata (abfd).magic = z_magic;
503 adata (abfd).subformat = q_magic_format;
504 }
bbb1afc8 505 else if (N_MAGIC (execp) == NMAGIC)
252b5132
RH		 506 {
507 abfd->flags |= WP_TEXT;
508 adata (abfd).magic = n_magic;
509 }
bbb1afc8
AM		 510 else if (N_MAGIC (execp) == OMAGIC
511 || N_MAGIC (execp) == BMAGIC)
252b5132
RH		 512 adata (abfd).magic = o_magic;
513 else
116c20d2
NC		 514 /* Should have been checked with N_BADMAG before this routine
515 was called. */
516 abort ();
252b5132
RH		 517
518 bfd_get_start_address (abfd) = execp->a_entry;
519
116c20d2 520 obj_aout_symbols (abfd) = NULL;
252b5132
RH		 521 bfd_get_symcount (abfd) = execp->a_syms / sizeof (struct external_nlist);
522
523 /* The default relocation entry size is that of traditional V7 Unix. */
524 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
525
0ef5a5bd 526 /* The default symbol entry size is that of traditional Unix. */
252b5132
RH		 527 obj_symbol_entry_size (abfd) = EXTERNAL_NLIST_SIZE;
528
529#ifdef USE_MMAP
530 bfd_init_window (&obj_aout_sym_window (abfd));
531 bfd_init_window (&obj_aout_string_window (abfd));
532#endif
533 obj_aout_external_syms (abfd) = NULL;
534 obj_aout_external_strings (abfd) = NULL;
535 obj_aout_sym_hashes (abfd) = NULL;
536
116c20d2 537 if (! NAME (aout, make_sections) (abfd))
487e54f2 538 goto error_ret;
252b5132 539
eea6121a
AM		 540 obj_datasec (abfd)->size = execp->a_data;
541 obj_bsssec (abfd)->size = execp->a_bss;
252b5132
RH		 542
543 obj_textsec (abfd)->flags =
544 (execp->a_trsize != 0
545 ? (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_RELOC)
546 : (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS));
547 obj_datasec (abfd)->flags =
548 (execp->a_drsize != 0
549 ? (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS | SEC_RELOC)
550 : (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS));
551 obj_bsssec (abfd)->flags = SEC_ALLOC;
552
553#ifdef THIS_IS_ONLY_DOCUMENTATION
554 /* The common code can't fill in these things because they depend
555 on either the start address of the text segment, the rounding
556 up of virtual addresses between segments, or the starting file
557 position of the text segment -- all of which varies among different
558 versions of a.out. */
559
560 /* Call back to the format-dependent code to fill in the rest of the
561 fields and do any further cleanup. Things that should be filled
562 in by the callback: */
563
564 struct exec *execp = exec_hdr (abfd);
565
bbb1afc8 566 obj_textsec (abfd)->size = N_TXTSIZE (execp);
f7c33884 567 /* Data and bss are already filled in since they're so standard. */
252b5132 568
f7c33884 569 /* The virtual memory addresses of the sections. */
bbb1afc8
AM		 570 obj_textsec (abfd)->vma = N_TXTADDR (execp);
571 obj_datasec (abfd)->vma = N_DATADDR (execp);
572 obj_bsssec (abfd)->vma = N_BSSADDR (execp);
252b5132 573
f7c33884 574 /* The file offsets of the sections. */
bbb1afc8
AM		 575 obj_textsec (abfd)->filepos = N_TXTOFF (execp);
576 obj_datasec (abfd)->filepos = N_DATOFF (execp);
252b5132 577
f7c33884 578 /* The file offsets of the relocation info. */
bbb1afc8
AM		 579 obj_textsec (abfd)->rel_filepos = N_TRELOFF (execp);
580 obj_datasec (abfd)->rel_filepos = N_DRELOFF (execp);
252b5132
RH		 581
582 /* The file offsets of the string table and symbol table. */
bbb1afc8
AM		 583 obj_str_filepos (abfd) = N_STROFF (execp);
584 obj_sym_filepos (abfd) = N_SYMOFF (execp);
252b5132
RH		 585
586 /* Determine the architecture and machine type of the object file. */
bbb1afc8 587 switch (N_MACHTYPE (exec_hdr (abfd)))
923f08ff
AM		 588 {
589 default:
590 abfd->obj_arch = bfd_arch_obscure;
591 break;
592 }
252b5132 593
923f08ff
AM		 594 adata (abfd)->page_size = TARGET_PAGE_SIZE;
595 adata (abfd)->segment_size = SEGMENT_SIZE;
596 adata (abfd)->exec_bytes_size = EXEC_BYTES_SIZE;
252b5132
RH		 597
598 return abfd->xvec;
599
600 /* The architecture is encoded in various ways in various a.out variants,
601 or is not encoded at all in some of them. The relocation size depends
602 on the architecture and the a.out variant. Finally, the return value
603 is the bfd_target vector in use. If an error occurs, return zero and
604 set bfd_error to the appropriate error code.
605
606 Formats such as b.out, which have additional fields in the a.out
607 header, should cope with them in this callback as well. */
608#endif /* DOCUMENTATION */
609
beb0d161 610 result = (*callback_to_real_object_p) (abfd);
252b5132
RH		 611
612 /* Now that the segment addresses have been worked out, take a better
613 guess at whether the file is executable. If the entry point
614 is within the text segment, assume it is. (This makes files
615 executable even if their entry point address is 0, as long as
616 their text starts at zero.).
617
618 This test had to be changed to deal with systems where the text segment
619 runs at a different location than the default. The problem is that the
620 entry address can appear to be outside the text segment, thus causing an
621 erroneous conclusion that the file isn't executable.
622
623 To fix this, we now accept any non-zero entry point as an indication of
624 executability. This will work most of the time, since only the linker
0ef5a5bd 625 sets the entry point, and that is likely to be non-zero for most systems. */
252b5132
RH		 626
627 if (execp->a_entry != 0
923f08ff
AM		 628 || (execp->a_entry >= obj_textsec (abfd)->vma
629 && execp->a_entry < (obj_textsec (abfd)->vma
4c1534c7
AM		 630 + obj_textsec (abfd)->size)
631 && execp->a_trsize == 0
632 && execp->a_drsize == 0))
252b5132
RH		 633 abfd->flags |= EXEC_P;
634#ifdef STAT_FOR_EXEC
635 else
636 {
637 struct stat stat_buf;
638
639 /* The original heuristic doesn't work in some important cases.
640 The a.out file has no information about the text start
641 address. For files (like kernels) linked to non-standard
642 addresses (ld -Ttext nnn) the entry point may not be between
643 the default text start (obj_textsec(abfd)->vma) and
644 (obj_textsec(abfd)->vma) + text size. This is not just a mach
645 issue. Many kernels are loaded at non standard addresses. */
646 if (abfd->iostream != NULL
647 && (abfd->flags & BFD_IN_MEMORY) == 0
923f08ff 648 && (fstat (fileno ((FILE *) (abfd->iostream)), &stat_buf) == 0)
252b5132
RH		 649 && ((stat_buf.st_mode & 0111) != 0))
650 abfd->flags |= EXEC_P;
651 }
652#endif /* STAT_FOR_EXEC */
653
654 if (result)
0e71e495 655 return result;
487e54f2
AM		 656
657 error_ret:
658 bfd_release (abfd, rawptr);
659 abfd->tdata.aout_data = oldrawptr;
660 return NULL;
252b5132
RH		 661}
662
663/*
664FUNCTION
665 aout_@var{size}_mkobject
666
667SYNOPSIS
b34976b6 668 bfd_boolean aout_@var{size}_mkobject, (bfd *abfd);
252b5132
RH		 669
670DESCRIPTION
671 Initialize BFD @var{abfd} for use with a.out files.
672*/
673
b34976b6 674bfd_boolean
116c20d2 675NAME (aout, mkobject) (bfd *abfd)
252b5132 676{
dc810e39 677 struct aout_data_struct *rawptr;
116c20d2 678 bfd_size_type amt = sizeof (* rawptr);
252b5132
RH		 679
680 bfd_set_error (bfd_error_system_call);
681
a50b1753 682 rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, amt);
252b5132 683 if (rawptr == NULL)
b34976b6 684 return FALSE;
252b5132
RH		 685
686 abfd->tdata.aout_data = rawptr;
687 exec_hdr (abfd) = &(rawptr->e);
688
116c20d2
NC		 689 obj_textsec (abfd) = NULL;
690 obj_datasec (abfd) = NULL;
691 obj_bsssec (abfd) = NULL;
252b5132 692
b34976b6 693 return TRUE;
252b5132
RH		 694}
695
252b5132
RH		 696/*
697FUNCTION
698 aout_@var{size}_machine_type
699
700SYNOPSIS
701 enum machine_type aout_@var{size}_machine_type
702 (enum bfd_architecture arch,
116c20d2
NC		 703 unsigned long machine,
704 bfd_boolean *unknown);
252b5132
RH		 705
706DESCRIPTION
707 Keep track of machine architecture and machine type for
708 a.out's. Return the <<machine_type>> for a particular
709 architecture and machine, or <<M_UNKNOWN>> if that exact architecture
710 and machine can't be represented in a.out format.
711
712 If the architecture is understood, machine type 0 (default)
713 is always understood.
714*/
715
716enum machine_type
116c20d2
NC		 717NAME (aout, machine_type) (enum bfd_architecture arch,
718 unsigned long machine,
719 bfd_boolean *unknown)
252b5132
RH		 720{
721 enum machine_type arch_flags;
722
723 arch_flags = M_UNKNOWN;
b34976b6 724 *unknown = TRUE;
252b5132 725
923f08ff
AM		 726 switch (arch)
727 {
728 case bfd_arch_sparc:
729 if (machine == 0
730 || machine == bfd_mach_sparc
731 || machine == bfd_mach_sparc_sparclite
732 || machine == bfd_mach_sparc_sparclite_le
74d26813
L		 733 || machine == bfd_mach_sparc_v8plus
734 || machine == bfd_mach_sparc_v8plusa
735 || machine == bfd_mach_sparc_v8plusb
736 || machine == bfd_mach_sparc_v9
737 || machine == bfd_mach_sparc_v9a
738 || machine == bfd_mach_sparc_v9b)
923f08ff
AM		 739 arch_flags = M_SPARC;
740 else if (machine == bfd_mach_sparc_sparclet)
741 arch_flags = M_SPARCLET;
742 break;
743
744 case bfd_arch_m68k:
745 switch (machine)
746 {
747 case 0: arch_flags = M_68010; break;
b34976b6 748 case bfd_mach_m68000: arch_flags = M_UNKNOWN; *unknown = FALSE; break;
923f08ff
AM		 749 case bfd_mach_m68010: arch_flags = M_68010; break;
750 case bfd_mach_m68020: arch_flags = M_68020; break;
751 default: arch_flags = M_UNKNOWN; break;
752 }
252b5132 753 break;
923f08ff
AM		 754
755 case bfd_arch_i386:
3b77b1d5
AM		 756 if (machine == 0
757 || machine == bfd_mach_i386_i386
758 || machine == bfd_mach_i386_i386_intel_syntax)
923f08ff 759 arch_flags = M_386;
252b5132 760 break;
923f08ff 761
923f08ff
AM		 762 case bfd_arch_arm:
763 if (machine == 0)
764 arch_flags = M_ARM;
252b5132 765 break;
252b5132 766
923f08ff
AM		 767 case bfd_arch_mips:
768 switch (machine)
769 {
770 case 0:
771 case bfd_mach_mips3000:
772 case bfd_mach_mips3900:
773 arch_flags = M_MIPS1;
774 break;
775 case bfd_mach_mips6000:
776 arch_flags = M_MIPS2;
777 break;
778 case bfd_mach_mips4000:
779 case bfd_mach_mips4010:
780 case bfd_mach_mips4100:
781 case bfd_mach_mips4300:
782 case bfd_mach_mips4400:
783 case bfd_mach_mips4600:
784 case bfd_mach_mips4650:
785 case bfd_mach_mips8000:
0d2e43ed 786 case bfd_mach_mips9000:
923f08ff
AM		 787 case bfd_mach_mips10000:
788 case bfd_mach_mips12000:
3aa3176b
TS		 789 case bfd_mach_mips14000:
790 case bfd_mach_mips16000:
923f08ff
AM		 791 case bfd_mach_mips16:
792 case bfd_mach_mipsisa32:
af7ee8bf 793 case bfd_mach_mipsisa32r2:
ae52f483
AB		 794 case bfd_mach_mipsisa32r3:
795 case bfd_mach_mipsisa32r5:
7361da2c 796 case bfd_mach_mipsisa32r6:
923f08ff
AM		 797 case bfd_mach_mips5:
798 case bfd_mach_mipsisa64:
5f74bc13 799 case bfd_mach_mipsisa64r2:
ae52f483
AB		 800 case bfd_mach_mipsisa64r3:
801 case bfd_mach_mipsisa64r5:
7361da2c 802 case bfd_mach_mipsisa64r6:
923f08ff 803 case bfd_mach_mips_sb1:
52b6b6b9 804 case bfd_mach_mips_xlr:
923f08ff
AM		 805 /* FIXME: These should be MIPS3, MIPS4, MIPS16, MIPS32, etc. */
806 arch_flags = M_MIPS2;
807 break;
808 default:
809 arch_flags = M_UNKNOWN;
810 break;
811 }
812 break;
813
814 case bfd_arch_ns32k:
815 switch (machine)
816 {
817 case 0: arch_flags = M_NS32532; break;
818 case 32032: arch_flags = M_NS32032; break;
819 case 32532: arch_flags = M_NS32532; break;
820 default: arch_flags = M_UNKNOWN; break;
821 }
822 break;
252b5132 823
923f08ff 824 case bfd_arch_vax:
b34976b6 825 *unknown = FALSE;
923f08ff 826 break;
06c15ad7 827
923f08ff
AM		 828 case bfd_arch_cris:
829 if (machine == 0 || machine == 255)
830 arch_flags = M_CRIS;
831 break;
832
727e493d
MK		 833 case bfd_arch_m88k:
834 *unknown = FALSE;
835 break;
836
923f08ff
AM		 837 default:
838 arch_flags = M_UNKNOWN;
839 }
252b5132
RH		 840
841 if (arch_flags != M_UNKNOWN)
b34976b6 842 *unknown = FALSE;
252b5132
RH		 843
844 return arch_flags;
845}
846
252b5132
RH		 847/*
848FUNCTION
849 aout_@var{size}_set_arch_mach
850
851SYNOPSIS
b34976b6 852 bfd_boolean aout_@var{size}_set_arch_mach,
252b5132
RH		 853 (bfd *,
854 enum bfd_architecture arch,
116c20d2 855 unsigned long machine);
252b5132
RH		 856
857DESCRIPTION
858 Set the architecture and the machine of the BFD @var{abfd} to the
859 values @var{arch} and @var{machine}. Verify that @var{abfd}'s format
860 can support the architecture required.
861*/
862
b34976b6 863bfd_boolean
116c20d2
NC		 864NAME (aout, set_arch_mach) (bfd *abfd,
865 enum bfd_architecture arch,
866 unsigned long machine)
252b5132
RH		 867{
868 if (! bfd_default_set_arch_mach (abfd, arch, machine))
b34976b6 869 return FALSE;
252b5132
RH		 870
871 if (arch != bfd_arch_unknown)
872 {
b34976b6 873 bfd_boolean unknown;
252b5132 874
116c20d2 875 NAME (aout, machine_type) (arch, machine, &unknown);
252b5132 876 if (unknown)
b34976b6 877 return FALSE;
252b5132
RH		 878 }
879
f7c33884 880 /* Determine the size of a relocation entry. */
923f08ff
AM		 881 switch (arch)
882 {
883 case bfd_arch_sparc:
923f08ff
AM		 884 case bfd_arch_mips:
885 obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE;
886 break;
887 default:
888 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
889 break;
890 }
252b5132 891
923f08ff 892 return (*aout_backend_info (abfd)->set_sizes) (abfd);
252b5132
RH		 893}
894
895static void
116c20d2 896adjust_o_magic (bfd *abfd, struct internal_exec *execp)
252b5132
RH		 897{
898 file_ptr pos = adata (abfd).exec_bytes_size;
899 bfd_vma vma = 0;
900 int pad = 0;
901
902 /* Text. */
923f08ff
AM		 903 obj_textsec (abfd)->filepos = pos;
904 if (!obj_textsec (abfd)->user_set_vma)
905 obj_textsec (abfd)->vma = vma;
252b5132 906 else
923f08ff 907 vma = obj_textsec (abfd)->vma;
252b5132 908
eea6121a
AM		 909 pos += obj_textsec (abfd)->size;
910 vma += obj_textsec (abfd)->size;
252b5132
RH		 911
912 /* Data. */
923f08ff 913 if (!obj_datasec (abfd)->user_set_vma)
252b5132 914 {
eea6121a 915 obj_textsec (abfd)->size += pad;
252b5132
RH		 916 pos += pad;
917 vma += pad;
923f08ff 918 obj_datasec (abfd)->vma = vma;
252b5132
RH		 919 }
920 else
923f08ff
AM		 921 vma = obj_datasec (abfd)->vma;
922 obj_datasec (abfd)->filepos = pos;
eea6121a
AM		 923 pos += obj_datasec (abfd)->size;
924 vma += obj_datasec (abfd)->size;
252b5132
RH		 925
926 /* BSS. */
923f08ff 927 if (!obj_bsssec (abfd)->user_set_vma)
252b5132 928 {
eea6121a 929 obj_datasec (abfd)->size += pad;
252b5132
RH		 930 pos += pad;
931 vma += pad;
923f08ff 932 obj_bsssec (abfd)->vma = vma;
252b5132
RH		 933 }
934 else
935 {
08da05b0 936 /* The VMA of the .bss section is set by the VMA of the
252b5132
RH		 937 .data section plus the size of the .data section. We may
938 need to add padding bytes to make this true. */
939 pad = obj_bsssec (abfd)->vma - vma;
940 if (pad > 0)
941 {
eea6121a 942 obj_datasec (abfd)->size += pad;
252b5132
RH		 943 pos += pad;
944 }
945 }
923f08ff 946 obj_bsssec (abfd)->filepos = pos;
252b5132
RH		 947
948 /* Fix up the exec header. */
eea6121a
AM		 949 execp->a_text = obj_textsec (abfd)->size;
950 execp->a_data = obj_datasec (abfd)->size;
951 execp->a_bss = obj_bsssec (abfd)->size;
bbb1afc8 952 N_SET_MAGIC (execp, OMAGIC);
252b5132
RH		 953}
954
955static void
116c20d2 956adjust_z_magic (bfd *abfd, struct internal_exec *execp)
252b5132
RH		 957{
958 bfd_size_type data_pad, text_pad;
959 file_ptr text_end;
dc810e39 960 const struct aout_backend_data *abdp;
116c20d2
NC		 961 /* TRUE if text includes exec header. */
962 bfd_boolean ztih;
0ef5a5bd 963
252b5132
RH		 964 abdp = aout_backend_info (abfd);
965
966 /* Text. */
967 ztih = (abdp != NULL
968 && (abdp->text_includes_header
969 || obj_aout_subformat (abfd) == q_magic_format));
923f08ff
AM		 970 obj_textsec (abfd)->filepos = (ztih
971 ? adata (abfd).exec_bytes_size
972 : adata (abfd).zmagic_disk_block_size);
973 if (! obj_textsec (abfd)->user_set_vma)
252b5132
RH		 974 {
975 /* ?? Do we really need to check for relocs here? */
923f08ff
AM		 976 obj_textsec (abfd)->vma = ((abfd->flags & HAS_RELOC)
977 ? 0
978 : (ztih
979 ? (abdp->default_text_vma
980 + adata (abfd).exec_bytes_size)
981 : abdp->default_text_vma));
252b5132
RH		 982 text_pad = 0;
983 }
984 else
985 {
986 /* The .text section is being loaded at an unusual address. We
987 may need to pad it such that the .data section starts at a page
988 boundary. */
989 if (ztih)
990 text_pad = ((obj_textsec (abfd)->filepos - obj_textsec (abfd)->vma)
991 & (adata (abfd).page_size - 1));
992 else
993 text_pad = ((- obj_textsec (abfd)->vma)
994 & (adata (abfd).page_size - 1));
995 }
996
997 /* Find start of data. */
998 if (ztih)
999 {
eea6121a 1000 text_end = obj_textsec (abfd)->filepos + obj_textsec (abfd)->size;
252b5132
RH		 1001 text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end;
1002 }
1003 else
1004 {
1005 /* Note that if page_size == zmagic_disk_block_size, then
1006 filepos == page_size, and this case is the same as the ztih
1007 case. */
eea6121a 1008 text_end = obj_textsec (abfd)->size;
252b5132
RH		 1009 text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end;
1010 text_end += obj_textsec (abfd)->filepos;
1011 }
eea6121a 1012 obj_textsec (abfd)->size += text_pad;
252b5132
RH		 1013 text_end += text_pad;
1014
1015 /* Data. */
923f08ff 1016 if (!obj_datasec (abfd)->user_set_vma)
252b5132
RH		 1017 {
1018 bfd_vma vma;
eea6121a 1019 vma = obj_textsec (abfd)->vma + obj_textsec (abfd)->size;
923f08ff 1020 obj_datasec (abfd)->vma = BFD_ALIGN (vma, adata (abfd).segment_size);
252b5132
RH		 1021 }
1022 if (abdp && abdp->zmagic_mapped_contiguous)
1023 {
dee0a8f4
NC		 1024 asection * text = obj_textsec (abfd);
1025 asection * data = obj_datasec (abfd);
1026
eea6121a 1027 text_pad = data->vma - (text->vma + text->size);
dee0a8f4
NC		 1028 /* Only pad the text section if the data
1029 section is going to be placed after it. */
1030 if (text_pad > 0)
eea6121a 1031 text->size += text_pad;
252b5132 1032 }
923f08ff 1033 obj_datasec (abfd)->filepos = (obj_textsec (abfd)->filepos
eea6121a 1034 + obj_textsec (abfd)->size);
0ef5a5bd 1035
252b5132 1036 /* Fix up exec header while we're at it. */
eea6121a 1037 execp->a_text = obj_textsec (abfd)->size;
252b5132 1038 if (ztih && (!abdp || (abdp && !abdp->exec_header_not_counted)))
923f08ff 1039 execp->a_text += adata (abfd).exec_bytes_size;
252b5132 1040 if (obj_aout_subformat (abfd) == q_magic_format)
bbb1afc8 1041 N_SET_MAGIC (execp, QMAGIC);
252b5132 1042 else
bbb1afc8 1043 N_SET_MAGIC (execp, ZMAGIC);
252b5132
RH		 1044
1045 /* Spec says data section should be rounded up to page boundary. */
eea6121a
AM		 1046 obj_datasec (abfd)->size
1047 = align_power (obj_datasec (abfd)->size,
923f08ff 1048 obj_bsssec (abfd)->alignment_power);
eea6121a 1049 execp->a_data = BFD_ALIGN (obj_datasec (abfd)->size,
923f08ff 1050 adata (abfd).page_size);
eea6121a 1051 data_pad = execp->a_data - obj_datasec (abfd)->size;
252b5132
RH		 1052
1053 /* BSS. */
923f08ff
AM		 1054 if (!obj_bsssec (abfd)->user_set_vma)
1055 obj_bsssec (abfd)->vma = (obj_datasec (abfd)->vma
eea6121a 1056 + obj_datasec (abfd)->size);
252b5132
RH		 1057 /* If the BSS immediately follows the data section and extra space
1058 in the page is left after the data section, fudge data
1059 in the header so that the bss section looks smaller by that
1060 amount. We'll start the bss section there, and lie to the OS.
1061 (Note that a linker script, as well as the above assignment,
1062 could have explicitly set the BSS vma to immediately follow
1063 the data section.) */
923f08ff 1064 if (align_power (obj_bsssec (abfd)->vma, obj_bsssec (abfd)->alignment_power)
eea6121a
AM		 1065 == obj_datasec (abfd)->vma + obj_datasec (abfd)->size)
1066 execp->a_bss = (data_pad > obj_bsssec (abfd)->size
1067 ? 0 : obj_bsssec (abfd)->size - data_pad);
252b5132 1068 else
eea6121a 1069 execp->a_bss = obj_bsssec (abfd)->size;
252b5132
RH		 1070}
1071
1072static void
116c20d2 1073adjust_n_magic (bfd *abfd, struct internal_exec *execp)
252b5132 1074{
923f08ff 1075 file_ptr pos = adata (abfd).exec_bytes_size;
252b5132
RH		 1076 bfd_vma vma = 0;
1077 int pad;
0ef5a5bd 1078
252b5132 1079 /* Text. */
923f08ff
AM		 1080 obj_textsec (abfd)->filepos = pos;
1081 if (!obj_textsec (abfd)->user_set_vma)
1082 obj_textsec (abfd)->vma = vma;
252b5132 1083 else
923f08ff 1084 vma = obj_textsec (abfd)->vma;
eea6121a
AM		 1085 pos += obj_textsec (abfd)->size;
1086 vma += obj_textsec (abfd)->size;
252b5132
RH		 1087
1088 /* Data. */
923f08ff
AM		 1089 obj_datasec (abfd)->filepos = pos;
1090 if (!obj_datasec (abfd)->user_set_vma)
1091 obj_datasec (abfd)->vma = BFD_ALIGN (vma, adata (abfd).segment_size);
1092 vma = obj_datasec (abfd)->vma;
0ef5a5bd 1093
252b5132 1094 /* Since BSS follows data immediately, see if it needs alignment. */
eea6121a 1095 vma += obj_datasec (abfd)->size;
923f08ff 1096 pad = align_power (vma, obj_bsssec (abfd)->alignment_power) - vma;
eea6121a
AM		 1097 obj_datasec (abfd)->size += pad;
1098 pos += obj_datasec (abfd)->size;
252b5132
RH		 1099
1100 /* BSS. */
923f08ff
AM		 1101 if (!obj_bsssec (abfd)->user_set_vma)
1102 obj_bsssec (abfd)->vma = vma;
252b5132 1103 else
923f08ff 1104 vma = obj_bsssec (abfd)->vma;
252b5132
RH		 1105
1106 /* Fix up exec header. */
eea6121a
AM		 1107 execp->a_text = obj_textsec (abfd)->size;
1108 execp->a_data = obj_datasec (abfd)->size;
1109 execp->a_bss = obj_bsssec (abfd)->size;
bbb1afc8 1110 N_SET_MAGIC (execp, NMAGIC);
252b5132
RH		 1111}
1112
b34976b6 1113bfd_boolean
3a8c4a5b 1114NAME (aout, adjust_sizes_and_vmas) (bfd *abfd)
252b5132
RH		 1115{
1116 struct internal_exec *execp = exec_hdr (abfd);
1117
116c20d2 1118 if (! NAME (aout, make_sections) (abfd))
b34976b6 1119 return FALSE;
252b5132 1120
923f08ff 1121 if (adata (abfd).magic != undecided_magic)
b34976b6 1122 return TRUE;
252b5132 1123
eea6121a
AM		 1124 obj_textsec (abfd)->size =
1125 align_power (obj_textsec (abfd)->size,
923f08ff 1126 obj_textsec (abfd)->alignment_power);
252b5132 1127
252b5132
RH		 1128 /* Rule (heuristic) for when to pad to a new page. Note that there
1129 are (at least) two ways demand-paged (ZMAGIC) files have been
1130 handled. Most Berkeley-based systems start the text segment at
1131 (TARGET_PAGE_SIZE). However, newer versions of SUNOS start the text
1132 segment right after the exec header; the latter is counted in the
1133 text segment size, and is paged in by the kernel with the rest of
0ef5a5bd 1134 the text. */
252b5132
RH		 1135
1136 /* This perhaps isn't the right way to do this, but made it simpler for me
1137 to understand enough to implement it. Better would probably be to go
1138 right from BFD flags to alignment/positioning characteristics. But the
1139 old code was sloppy enough about handling the flags, and had enough
1140 other magic, that it was a little hard for me to understand. I think
1141 I understand it better now, but I haven't time to do the cleanup this
1142 minute. */
1143
1144 if (abfd->flags & D_PAGED)
1145 /* Whether or not WP_TEXT is set -- let D_PAGED override. */
923f08ff 1146 adata (abfd).magic = z_magic;
252b5132 1147 else if (abfd->flags & WP_TEXT)
923f08ff 1148 adata (abfd).magic = n_magic;
252b5132 1149 else
923f08ff 1150 adata (abfd).magic = o_magic;
252b5132
RH		 1151
1152#ifdef BFD_AOUT_DEBUG /* requires gcc2 */
1153#if __GNUC__ >= 2
1154 fprintf (stderr, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n",
1155 ({ char *str;
923f08ff
AM		 1156 switch (adata (abfd).magic)
1157 {
1158 case n_magic: str = "NMAGIC"; break;
1159 case o_magic: str = "OMAGIC"; break;
1160 case z_magic: str = "ZMAGIC"; break;
1161 default: abort ();
1162 }
252b5132
RH		 1163 str;
1164 }),
eea6121a 1165 obj_textsec (abfd)->vma, obj_textsec (abfd)->size,
923f08ff 1166 obj_textsec (abfd)->alignment_power,
eea6121a 1167 obj_datasec (abfd)->vma, obj_datasec (abfd)->size,
923f08ff 1168 obj_datasec (abfd)->alignment_power,
eea6121a 1169 obj_bsssec (abfd)->vma, obj_bsssec (abfd)->size,
923f08ff 1170 obj_bsssec (abfd)->alignment_power);
252b5132
RH		 1171#endif
1172#endif
1173
923f08ff 1174 switch (adata (abfd).magic)
252b5132
RH		 1175 {
1176 case o_magic:
1177 adjust_o_magic (abfd, execp);
1178 break;
1179 case z_magic:
1180 adjust_z_magic (abfd, execp);
1181 break;
1182 case n_magic:
1183 adjust_n_magic (abfd, execp);
1184 break;
1185 default:
1186 abort ();
1187 }
1188
1189#ifdef BFD_AOUT_DEBUG
1190 fprintf (stderr, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n",
eea6121a 1191 obj_textsec (abfd)->vma, obj_textsec (abfd)->size,
923f08ff 1192 obj_textsec (abfd)->filepos,
eea6121a 1193 obj_datasec (abfd)->vma, obj_datasec (abfd)->size,
923f08ff 1194 obj_datasec (abfd)->filepos,
eea6121a 1195 obj_bsssec (abfd)->vma, obj_bsssec (abfd)->size);
252b5132
RH		 1196#endif
1197
b34976b6 1198 return TRUE;
252b5132
RH		 1199}
1200
1201/*
1202FUNCTION
1203 aout_@var{size}_new_section_hook
1204
1205SYNOPSIS
b34976b6 1206 bfd_boolean aout_@var{size}_new_section_hook,
252b5132 1207 (bfd *abfd,
116c20d2 1208 asection *newsect);
252b5132
RH		 1209
1210DESCRIPTION
1211 Called by the BFD in response to a @code{bfd_make_section}
1212 request.
1213*/
b34976b6 1214bfd_boolean
116c20d2 1215NAME (aout, new_section_hook) (bfd *abfd, asection *newsect)
252b5132 1216{
f7c33884 1217 /* Align to double at least. */
923f08ff 1218 newsect->alignment_power = bfd_get_arch_info (abfd)->section_align_power;
252b5132 1219
252b5132 1220 if (bfd_get_format (abfd) == bfd_object)
f7c33884
NC		 1221 {
1222 if (obj_textsec (abfd) == NULL && !strcmp (newsect->name, ".text"))
1223 {
1224 obj_textsec (abfd)= newsect;
1225 newsect->target_index = N_TEXT;
f7c33884 1226 }
f592407e 1227 else if (obj_datasec (abfd) == NULL && !strcmp (newsect->name, ".data"))
f7c33884
NC		 1228 {
1229 obj_datasec (abfd) = newsect;
1230 newsect->target_index = N_DATA;
f7c33884 1231 }
f592407e 1232 else if (obj_bsssec (abfd) == NULL && !strcmp (newsect->name, ".bss"))
f7c33884
NC		 1233 {
1234 obj_bsssec (abfd) = newsect;
1235 newsect->target_index = N_BSS;
f7c33884
NC		 1236 }
1237 }
252b5132 1238
f7c33884 1239 /* We allow more than three sections internally. */
f592407e 1240 return _bfd_generic_new_section_hook (abfd, newsect);
252b5132
RH		 1241}
1242
b34976b6 1243bfd_boolean
116c20d2
NC		 1244NAME (aout, set_section_contents) (bfd *abfd,
1245 sec_ptr section,
1246 const void * location,
1247 file_ptr offset,
1248 bfd_size_type count)
252b5132 1249{
252b5132
RH		 1250 if (! abfd->output_has_begun)
1251 {
3a8c4a5b 1252 if (! NAME (aout, adjust_sizes_and_vmas) (abfd))
b34976b6 1253 return FALSE;
252b5132
RH		 1254 }
1255
1256 if (section == obj_bsssec (abfd))
1257 {
1258 bfd_set_error (bfd_error_no_contents);
b34976b6 1259 return FALSE;
252b5132
RH		 1260 }
1261
1262 if (section != obj_textsec (abfd)
1263 && section != obj_datasec (abfd))
1264 {
e6af3a53
NC		 1265 if (aout_section_merge_with_text_p (abfd, section))
1266 section->filepos = obj_textsec (abfd)->filepos +
1267 (section->vma - obj_textsec (abfd)->vma);
1268 else
1269 {
1270 (*_bfd_error_handler)
1271 (_("%s: can not represent section `%s' in a.out object file format"),
1272 bfd_get_filename (abfd), bfd_get_section_name (abfd, section));
1273 bfd_set_error (bfd_error_nonrepresentable_section);
1274 return FALSE;
1275 }
252b5132
RH		 1276 }
1277
1278 if (count != 0)
1279 {
1280 if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0
dc810e39 1281 || bfd_bwrite (location, count, abfd) != count)
b34976b6 1282 return FALSE;
252b5132
RH		 1283 }
1284
b34976b6 1285 return TRUE;
252b5132
RH		 1286}
1287\f
1288/* Read the external symbols from an a.out file. */
1289
b34976b6 1290static bfd_boolean
116c20d2 1291aout_get_external_symbols (bfd *abfd)
252b5132 1292{
116c20d2 1293 if (obj_aout_external_syms (abfd) == NULL)
252b5132
RH		 1294 {
1295 bfd_size_type count;
1296 struct external_nlist *syms;
7c53fd1c 1297 bfd_size_type amt = exec_hdr (abfd)->a_syms;
252b5132 1298
7c53fd1c 1299 count = amt / EXTERNAL_NLIST_SIZE;
6b8f0fd5
MS		 1300 if (count == 0)
1301 return TRUE; /* Nothing to do. */
252b5132
RH		 1302
1303#ifdef USE_MMAP
7c53fd1c 1304 if (! bfd_get_file_window (abfd, obj_sym_filepos (abfd), amt,
b34976b6
AM		 1305 &obj_aout_sym_window (abfd), TRUE))
1306 return FALSE;
252b5132
RH		 1307 syms = (struct external_nlist *) obj_aout_sym_window (abfd).data;
1308#else
1309 /* We allocate using malloc to make the values easy to free
1310 later on. If we put them on the objalloc it might not be
1311 possible to free them. */
7c53fd1c 1312 syms = (struct external_nlist *) bfd_malloc (amt);
6b8f0fd5 1313 if (syms == NULL)
b34976b6 1314 return FALSE;
252b5132 1315
7c53fd1c
AM		 1316 if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
1317 || bfd_bread (syms, amt, abfd) != amt)
1318 {
1319 free (syms);
1320 return FALSE;
1321 }
252b5132
RH		 1322#endif
1323
1324 obj_aout_external_syms (abfd) = syms;
1325 obj_aout_external_sym_count (abfd) = count;
1326 }
0ef5a5bd 1327
252b5132
RH		 1328 if (obj_aout_external_strings (abfd) == NULL
1329 && exec_hdr (abfd)->a_syms != 0)
1330 {
1331 unsigned char string_chars[BYTES_IN_WORD];
1332 bfd_size_type stringsize;
1333 char *strings;
dc810e39 1334 bfd_size_type amt = BYTES_IN_WORD;
252b5132
RH		 1335
1336 /* Get the size of the strings. */
1337 if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0
116c20d2 1338 || bfd_bread ((void *) string_chars, amt, abfd) != amt)
b34976b6 1339 return FALSE;
252b5132
RH		 1340 stringsize = GET_WORD (abfd, string_chars);
1341
1342#ifdef USE_MMAP
82e51918 1343 if (! bfd_get_file_window (abfd, obj_str_filepos (abfd), stringsize,
b34976b6
AM		 1344 &obj_aout_string_window (abfd), TRUE))
1345 return FALSE;
252b5132
RH		 1346 strings = (char *) obj_aout_string_window (abfd).data;
1347#else
a50b1753 1348 strings = (char *) bfd_malloc (stringsize + 1);
252b5132 1349 if (strings == NULL)
b34976b6 1350 return FALSE;
252b5132
RH		 1351
1352 /* Skip space for the string count in the buffer for convenience
1353 when using indexes. */
dc810e39
AM		 1354 amt = stringsize - BYTES_IN_WORD;
1355 if (bfd_bread (strings + BYTES_IN_WORD, amt, abfd) != amt)
252b5132
RH		 1356 {
1357 free (strings);
b34976b6 1358 return FALSE;
252b5132
RH		 1359 }
1360#endif
1361
1362 /* Ensure that a zero index yields an empty string. */
1363 strings[0] = '\0';
1364
1365 strings[stringsize - 1] = 0;
1366
1367 obj_aout_external_strings (abfd) = strings;
1368 obj_aout_external_string_size (abfd) = stringsize;
1369 }
1370
b34976b6 1371 return TRUE;
252b5132
RH		 1372}
1373
1374/* Translate an a.out symbol into a BFD symbol. The desc, other, type
1375 and symbol->value fields of CACHE_PTR will be set from the a.out
1376 nlist structure. This function is responsible for setting
1377 symbol->flags and symbol->section, and adjusting symbol->value. */
1378
b34976b6 1379static bfd_boolean
116c20d2 1380translate_from_native_sym_flags (bfd *abfd, aout_symbol_type *cache_ptr)
252b5132
RH		 1381{
1382 flagword visible;
1383
1384 if ((cache_ptr->type & N_STAB) != 0
1385 || cache_ptr->type == N_FN)
1386 {
1387 asection *sec;
1388
1389 /* This is a debugging symbol. */
252b5132
RH		 1390 cache_ptr->symbol.flags = BSF_DEBUGGING;
1391
1392 /* Work out the symbol section. */
1393 switch (cache_ptr->type & N_TYPE)
1394 {
1395 case N_TEXT:
1396 case N_FN:
1397 sec = obj_textsec (abfd);
1398 break;
1399 case N_DATA:
1400 sec = obj_datasec (abfd);
1401 break;
1402 case N_BSS:
1403 sec = obj_bsssec (abfd);
1404 break;
1405 default:
1406 case N_ABS:
1407 sec = bfd_abs_section_ptr;
1408 break;
1409 }
1410
1411 cache_ptr->symbol.section = sec;
1412 cache_ptr->symbol.value -= sec->vma;
1413
b34976b6 1414 return TRUE;
252b5132
RH		 1415 }
1416
1417 /* Get the default visibility. This does not apply to all types, so
1418 we just hold it in a local variable to use if wanted. */
1419 if ((cache_ptr->type & N_EXT) == 0)
1420 visible = BSF_LOCAL;
1421 else
1422 visible = BSF_GLOBAL;
1423
1424 switch (cache_ptr->type)
1425 {
1426 default:
1427 case N_ABS: case N_ABS | N_EXT:
1428 cache_ptr->symbol.section = bfd_abs_section_ptr;
1429 cache_ptr->symbol.flags = visible;
1430 break;
1431
1432 case N_UNDF | N_EXT:
1433 if (cache_ptr->symbol.value != 0)
1434 {
1435 /* This is a common symbol. */
1436 cache_ptr->symbol.flags = BSF_GLOBAL;
1437 cache_ptr->symbol.section = bfd_com_section_ptr;
1438 }
1439 else
1440 {
1441 cache_ptr->symbol.flags = 0;
1442 cache_ptr->symbol.section = bfd_und_section_ptr;
1443 }
1444 break;
1445
1446 case N_TEXT: case N_TEXT | N_EXT:
1447 cache_ptr->symbol.section = obj_textsec (abfd);
1448 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1449 cache_ptr->symbol.flags = visible;
1450 break;
1451
1452 /* N_SETV symbols used to represent set vectors placed in the
1453 data section. They are no longer generated. Theoretically,
1454 it was possible to extract the entries and combine them with
1455 new ones, although I don't know if that was ever actually
1456 done. Unless that feature is restored, treat them as data
1457 symbols. */
1458 case N_SETV: case N_SETV | N_EXT:
1459 case N_DATA: case N_DATA | N_EXT:
1460 cache_ptr->symbol.section = obj_datasec (abfd);
1461 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1462 cache_ptr->symbol.flags = visible;
1463 break;
1464
1465 case N_BSS: case N_BSS | N_EXT:
1466 cache_ptr->symbol.section = obj_bsssec (abfd);
1467 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1468 cache_ptr->symbol.flags = visible;
1469 break;
1470
1471 case N_SETA: case N_SETA | N_EXT:
1472 case N_SETT: case N_SETT | N_EXT:
1473 case N_SETD: case N_SETD | N_EXT:
1474 case N_SETB: case N_SETB | N_EXT:
1475 {
1476 /* This code is no longer needed. It used to be used to make
1477 the linker handle set symbols, but they are now handled in
1478 the add_symbols routine instead. */
252b5132
RH		 1479 switch (cache_ptr->type & N_TYPE)
1480 {
1481 case N_SETA:
1482 cache_ptr->symbol.section = bfd_abs_section_ptr;
1483 break;
1484 case N_SETT:
1485 cache_ptr->symbol.section = obj_textsec (abfd);
1486 break;
1487 case N_SETD:
1488 cache_ptr->symbol.section = obj_datasec (abfd);
1489 break;
1490 case N_SETB:
1491 cache_ptr->symbol.section = obj_bsssec (abfd);
1492 break;
1493 }
1494
1495 cache_ptr->symbol.flags |= BSF_CONSTRUCTOR;
1496 }
1497 break;
1498
1499 case N_WARNING:
1500 /* This symbol is the text of a warning message. The next
1501 symbol is the symbol to associate the warning with. If a
1502 reference is made to that symbol, a warning is issued. */
1503 cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_WARNING;
1504 cache_ptr->symbol.section = bfd_abs_section_ptr;
1505 break;
1506
1507 case N_INDR: case N_INDR | N_EXT:
1508 /* An indirect symbol. This consists of two symbols in a row.
1509 The first symbol is the name of the indirection. The second
1510 symbol is the name of the target. A reference to the first
1511 symbol becomes a reference to the second. */
1512 cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_INDIRECT | visible;
1513 cache_ptr->symbol.section = bfd_ind_section_ptr;
1514 break;
1515
1516 case N_WEAKU:
1517 cache_ptr->symbol.section = bfd_und_section_ptr;
1518 cache_ptr->symbol.flags = BSF_WEAK;
1519 break;
1520
1521 case N_WEAKA:
1522 cache_ptr->symbol.section = bfd_abs_section_ptr;
1523 cache_ptr->symbol.flags = BSF_WEAK;
1524 break;
1525
1526 case N_WEAKT:
1527 cache_ptr->symbol.section = obj_textsec (abfd);
1528 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1529 cache_ptr->symbol.flags = BSF_WEAK;
1530 break;
1531
1532 case N_WEAKD:
1533 cache_ptr->symbol.section = obj_datasec (abfd);
1534 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1535 cache_ptr->symbol.flags = BSF_WEAK;
1536 break;
1537
1538 case N_WEAKB:
1539 cache_ptr->symbol.section = obj_bsssec (abfd);
1540 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1541 cache_ptr->symbol.flags = BSF_WEAK;
1542 break;
1543 }
1544
b34976b6 1545 return TRUE;
252b5132
RH		 1546}
1547
1548/* Set the fields of SYM_POINTER according to CACHE_PTR. */
1549
b34976b6 1550static bfd_boolean
116c20d2
NC		 1551translate_to_native_sym_flags (bfd *abfd,
1552 asymbol *cache_ptr,
1553 struct external_nlist *sym_pointer)
252b5132
RH		 1554{
1555 bfd_vma value = cache_ptr->value;
1556 asection *sec;
1557 bfd_vma off;
1558
1559 /* Mask out any existing type bits in case copying from one section
1560 to another. */
1561 sym_pointer->e_type[0] &= ~N_TYPE;
1562
1563 sec = bfd_get_section (cache_ptr);
1564 off = 0;
1565
1566 if (sec == NULL)
1567 {
1568 /* This case occurs, e.g., for the *DEBUG* section of a COFF
1569 file. */
1570 (*_bfd_error_handler)
1571 (_("%s: can not represent section for symbol `%s' in a.out object file format"),
0ef5a5bd 1572 bfd_get_filename (abfd),
252b5132
RH		 1573 cache_ptr->name != NULL ? cache_ptr->name : _("*unknown*"));
1574 bfd_set_error (bfd_error_nonrepresentable_section);
b34976b6 1575 return FALSE;
252b5132
RH		 1576 }
1577
1578 if (sec->output_section != NULL)
1579 {
1580 off = sec->output_offset;
1581 sec = sec->output_section;
1582 }
1583
1584 if (bfd_is_abs_section (sec))
1585 sym_pointer->e_type[0] |= N_ABS;
1586 else if (sec == obj_textsec (abfd))
1587 sym_pointer->e_type[0] |= N_TEXT;
1588 else if (sec == obj_datasec (abfd))
1589 sym_pointer->e_type[0] |= N_DATA;
1590 else if (sec == obj_bsssec (abfd))
1591 sym_pointer->e_type[0] |= N_BSS;
1592 else if (bfd_is_und_section (sec))
1593 sym_pointer->e_type[0] = N_UNDF | N_EXT;
1594 else if (bfd_is_ind_section (sec))
1595 sym_pointer->e_type[0] = N_INDR;
1596 else if (bfd_is_com_section (sec))
1597 sym_pointer->e_type[0] = N_UNDF | N_EXT;
1598 else
1599 {
e6af3a53
NC		 1600 if (aout_section_merge_with_text_p (abfd, sec))
1601 sym_pointer->e_type[0] |= N_TEXT;
1602 else
1603 {
1604 (*_bfd_error_handler)
1605 (_("%s: can not represent section `%s' in a.out object file format"),
1606 bfd_get_filename (abfd), bfd_get_section_name (abfd, sec));
1607 bfd_set_error (bfd_error_nonrepresentable_section);
1608 return FALSE;
1609 }
252b5132
RH		 1610 }
1611
f7c33884 1612 /* Turn the symbol from section relative to absolute again. */
252b5132
RH		 1613 value += sec->vma + off;
1614
1615 if ((cache_ptr->flags & BSF_WARNING) != 0)
1616 sym_pointer->e_type[0] = N_WARNING;
1617
1618 if ((cache_ptr->flags & BSF_DEBUGGING) != 0)
1619 sym_pointer->e_type[0] = ((aout_symbol_type *) cache_ptr)->type;
1620 else if ((cache_ptr->flags & BSF_GLOBAL) != 0)
1621 sym_pointer->e_type[0] |= N_EXT;
930d924d
L		 1622 else if ((cache_ptr->flags & BSF_LOCAL) != 0)
1623 sym_pointer->e_type[0] &= ~N_EXT;
252b5132
RH		 1624
1625 if ((cache_ptr->flags & BSF_CONSTRUCTOR) != 0)
1626 {
1627 int type = ((aout_symbol_type *) cache_ptr)->type;
f7c33884 1628
252b5132
RH		 1629 switch (type)
1630 {
1631 case N_ABS: type = N_SETA; break;
1632 case N_TEXT: type = N_SETT; break;
1633 case N_DATA: type = N_SETD; break;
1634 case N_BSS: type = N_SETB; break;
1635 }
1636 sym_pointer->e_type[0] = type;
1637 }
1638
1639 if ((cache_ptr->flags & BSF_WEAK) != 0)
1640 {
1641 int type;
1642
1643 switch (sym_pointer->e_type[0] & N_TYPE)
1644 {
1645 default:
1646 case N_ABS: type = N_WEAKA; break;
1647 case N_TEXT: type = N_WEAKT; break;
1648 case N_DATA: type = N_WEAKD; break;
1649 case N_BSS: type = N_WEAKB; break;
1650 case N_UNDF: type = N_WEAKU; break;
1651 }
1652 sym_pointer->e_type[0] = type;
1653 }
1654
923f08ff 1655 PUT_WORD (abfd, value, sym_pointer->e_value);
252b5132 1656
b34976b6 1657 return TRUE;
252b5132
RH		 1658}
1659\f
0ef5a5bd 1660/* Native-level interface to symbols. */
252b5132
RH		 1661
1662asymbol *
116c20d2 1663NAME (aout, make_empty_symbol) (bfd *abfd)
252b5132 1664{
dc810e39 1665 bfd_size_type amt = sizeof (aout_symbol_type);
116c20d2 1666
d3ce72d0
NC		 1667 aout_symbol_type *new_symbol = (aout_symbol_type *) bfd_zalloc (abfd, amt);
1668 if (!new_symbol)
252b5132 1669 return NULL;
d3ce72d0 1670 new_symbol->symbol.the_bfd = abfd;
252b5132 1671
d3ce72d0 1672 return &new_symbol->symbol;
252b5132
RH		 1673}
1674
1675/* Translate a set of internal symbols into external symbols. */
1676
b34976b6 1677bfd_boolean
116c20d2
NC		 1678NAME (aout, translate_symbol_table) (bfd *abfd,
1679 aout_symbol_type *in,
1680 struct external_nlist *ext,
1681 bfd_size_type count,
1682 char *str,
1683 bfd_size_type strsize,
1684 bfd_boolean dynamic)
252b5132
RH		 1685{
1686 struct external_nlist *ext_end;
1687
1688 ext_end = ext + count;
1689 for (; ext < ext_end; ext++, in++)
1690 {
1691 bfd_vma x;
1692
1693 x = GET_WORD (abfd, ext->e_strx);
1694 in->symbol.the_bfd = abfd;
1695
1696 /* For the normal symbols, the zero index points at the number
1697 of bytes in the string table but is to be interpreted as the
1698 null string. For the dynamic symbols, the number of bytes in
1699 the string table is stored in the __DYNAMIC structure and the
1700 zero index points at an actual string. */
1701 if (x == 0 && ! dynamic)
1702 in->symbol.name = "";
1703 else if (x < strsize)
1704 in->symbol.name = str + x;
1705 else
b34976b6 1706 return FALSE;
252b5132
RH		 1707
1708 in->symbol.value = GET_SWORD (abfd, ext->e_value);
dc810e39
AM		 1709 in->desc = H_GET_16 (abfd, ext->e_desc);
1710 in->other = H_GET_8 (abfd, ext->e_other);
1711 in->type = H_GET_8 (abfd, ext->e_type);
252b5132
RH		 1712 in->symbol.udata.p = NULL;
1713
1714 if (! translate_from_native_sym_flags (abfd, in))
b34976b6 1715 return FALSE;
252b5132
RH		 1716
1717 if (dynamic)
1718 in->symbol.flags |= BSF_DYNAMIC;
1719 }
1720
b34976b6 1721 return TRUE;
252b5132
RH		 1722}
1723
1724/* We read the symbols into a buffer, which is discarded when this
1725 function exits. We read the strings into a buffer large enough to
0ef5a5bd 1726 hold them all plus all the cached symbol entries. */
252b5132 1727
b34976b6 1728bfd_boolean
116c20d2 1729NAME (aout, slurp_symbol_table) (bfd *abfd)
252b5132
RH		 1730{
1731 struct external_nlist *old_external_syms;
1732 aout_symbol_type *cached;
dc810e39 1733 bfd_size_type cached_size;
252b5132 1734
f7c33884 1735 /* If there's no work to be done, don't do any. */
116c20d2 1736 if (obj_aout_symbols (abfd) != NULL)
b34976b6 1737 return TRUE;
252b5132
RH		 1738
1739 old_external_syms = obj_aout_external_syms (abfd);
1740
1741 if (! aout_get_external_symbols (abfd))
b34976b6 1742 return FALSE;
252b5132 1743
dc810e39 1744 cached_size = obj_aout_external_sym_count (abfd);
87b32780
MS		 1745 if (cached_size == 0)
1746 return TRUE; /* Nothing to do. */
1747
dc810e39 1748 cached_size *= sizeof (aout_symbol_type);
a50b1753 1749 cached = (aout_symbol_type *) bfd_zmalloc (cached_size);
87b32780 1750 if (cached == NULL)
b34976b6 1751 return FALSE;
252b5132
RH		 1752
1753 /* Convert from external symbol information to internal. */
116c20d2 1754 if (! (NAME (aout, translate_symbol_table)
252b5132
RH		 1755 (abfd, cached,
1756 obj_aout_external_syms (abfd),
1757 obj_aout_external_sym_count (abfd),
1758 obj_aout_external_strings (abfd),
1759 obj_aout_external_string_size (abfd),
b34976b6 1760 FALSE)))
252b5132
RH		 1761 {
1762 free (cached);
b34976b6 1763 return FALSE;
252b5132
RH		 1764 }
1765
1766 bfd_get_symcount (abfd) = obj_aout_external_sym_count (abfd);
1767
1768 obj_aout_symbols (abfd) = cached;
1769
1770 /* It is very likely that anybody who calls this function will not
1771 want the external symbol information, so if it was allocated
1772 because of our call to aout_get_external_symbols, we free it up
1773 right away to save space. */
116c20d2
NC		 1774 if (old_external_syms == NULL
1775 && obj_aout_external_syms (abfd) != NULL)
252b5132
RH		 1776 {
1777#ifdef USE_MMAP
1778 bfd_free_window (&obj_aout_sym_window (abfd));
1779#else
1780 free (obj_aout_external_syms (abfd));
1781#endif
1782 obj_aout_external_syms (abfd) = NULL;
1783 }
1784
b34976b6 1785 return TRUE;
252b5132
RH		 1786}
1787\f
1788/* We use a hash table when writing out symbols so that we only write
1789 out a particular string once. This helps particularly when the
1790 linker writes out stabs debugging entries, because each different
1791 contributing object file tends to have many duplicate stabs
1792 strings.
1793
1794 This hash table code breaks dbx on SunOS 4.1.3, so we don't do it
1795 if BFD_TRADITIONAL_FORMAT is set. */
1796
252b5132
RH		 1797/* Get the index of a string in a strtab, adding it if it is not
1798 already present. */
1799
116c20d2
NC		 1800static inline bfd_size_type
1801add_to_stringtab (bfd *abfd,
1802 struct bfd_strtab_hash *tab,
1803 const char *str,
1804 bfd_boolean copy)
252b5132 1805{
b34976b6 1806 bfd_boolean hash;
91d6fa6a 1807 bfd_size_type str_index;
252b5132
RH		 1808
1809 /* An index of 0 always means the empty string. */
1810 if (str == 0 || *str == '\0')
1811 return 0;
1812
1813 /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx
1814 doesn't understand a hashed string table. */
b34976b6 1815 hash = TRUE;
252b5132 1816 if ((abfd->flags & BFD_TRADITIONAL_FORMAT) != 0)
b34976b6 1817 hash = FALSE;
252b5132 1818
91d6fa6a 1819 str_index = _bfd_stringtab_add (tab, str, hash, copy);
252b5132 1820
91d6fa6a 1821 if (str_index != (bfd_size_type) -1)
116c20d2
NC		 1822 /* Add BYTES_IN_WORD to the return value to account for the
1823 space taken up by the string table size. */
91d6fa6a 1824 str_index += BYTES_IN_WORD;
252b5132 1825
91d6fa6a 1826 return str_index;
252b5132
RH		 1827}
1828
1829/* Write out a strtab. ABFD is already at the right location in the
1830 file. */
1831
b34976b6 1832static bfd_boolean
116c20d2 1833emit_stringtab (bfd *abfd, struct bfd_strtab_hash *tab)
252b5132
RH		 1834{
1835 bfd_byte buffer[BYTES_IN_WORD];
dc810e39 1836 bfd_size_type amt = BYTES_IN_WORD;
252b5132
RH		 1837
1838 /* The string table starts with the size. */
1839 PUT_WORD (abfd, _bfd_stringtab_size (tab) + BYTES_IN_WORD, buffer);
116c20d2 1840 if (bfd_bwrite ((void *) buffer, amt, abfd) != amt)
b34976b6 1841 return FALSE;
252b5132
RH		 1842
1843 return _bfd_stringtab_emit (abfd, tab);
1844}
1845\f
b34976b6 1846bfd_boolean
116c20d2 1847NAME (aout, write_syms) (bfd *abfd)
252b5132
RH		 1848{
1849 unsigned int count ;
1850 asymbol **generic = bfd_get_outsymbols (abfd);
1851 struct bfd_strtab_hash *strtab;
1852
1853 strtab = _bfd_stringtab_init ();
1854 if (strtab == NULL)
b34976b6 1855 return FALSE;
252b5132
RH		 1856
1857 for (count = 0; count < bfd_get_symcount (abfd); count++)
1858 {
1859 asymbol *g = generic[count];
1860 bfd_size_type indx;
1861 struct external_nlist nsp;
dc810e39 1862 bfd_size_type amt;
252b5132 1863
b34976b6 1864 indx = add_to_stringtab (abfd, strtab, g->name, FALSE);
252b5132
RH		 1865 if (indx == (bfd_size_type) -1)
1866 goto error_return;
1867 PUT_WORD (abfd, indx, (bfd_byte *) nsp.e_strx);
1868
923f08ff 1869 if (bfd_asymbol_flavour (g) == abfd->xvec->flavour)
252b5132 1870 {
923f08ff
AM		 1871 H_PUT_16 (abfd, aout_symbol (g)->desc, nsp.e_desc);
1872 H_PUT_8 (abfd, aout_symbol (g)->other, nsp.e_other);
1873 H_PUT_8 (abfd, aout_symbol (g)->type, nsp.e_type);
252b5132
RH		 1874 }
1875 else
1876 {
dc810e39
AM		 1877 H_PUT_16 (abfd, 0, nsp.e_desc);
1878 H_PUT_8 (abfd, 0, nsp.e_other);
1879 H_PUT_8 (abfd, 0, nsp.e_type);
252b5132
RH		 1880 }
1881
1882 if (! translate_to_native_sym_flags (abfd, g, &nsp))
1883 goto error_return;
1884
dc810e39 1885 amt = EXTERNAL_NLIST_SIZE;
116c20d2 1886 if (bfd_bwrite ((void *) &nsp, amt, abfd) != amt)
252b5132
RH		 1887 goto error_return;
1888
1889 /* NB: `KEEPIT' currently overlays `udata.p', so set this only
1890 here, at the end. */
1891 g->KEEPIT = count;
1892 }
1893
1894 if (! emit_stringtab (abfd, strtab))
1895 goto error_return;
1896
1897 _bfd_stringtab_free (strtab);
1898
b34976b6 1899 return TRUE;
252b5132
RH		 1900
1901error_return:
1902 _bfd_stringtab_free (strtab);
b34976b6 1903 return FALSE;
252b5132 1904}
252b5132
RH		 1905\f
1906long
116c20d2 1907NAME (aout, canonicalize_symtab) (bfd *abfd, asymbol **location)
252b5132 1908{
116c20d2
NC		 1909 unsigned int counter = 0;
1910 aout_symbol_type *symbase;
252b5132 1911
116c20d2
NC		 1912 if (!NAME (aout, slurp_symbol_table) (abfd))
1913 return -1;
252b5132 1914
116c20d2
NC		 1915 for (symbase = obj_aout_symbols (abfd);
1916 counter++ < bfd_get_symcount (abfd);
1917 )
1918 *(location++) = (asymbol *) (symbase++);
1919 *location++ =0;
1920 return bfd_get_symcount (abfd);
252b5132 1921}
252b5132 1922\f
f7c33884 1923/* Standard reloc stuff. */
0ef5a5bd 1924/* Output standard relocation information to a file in target byte order. */
252b5132 1925
116c20d2
NC		 1926extern void NAME (aout, swap_std_reloc_out)
1927 (bfd *, arelent *, struct reloc_std_external *);
252b5132
RH		 1928
1929void
116c20d2
NC		 1930NAME (aout, swap_std_reloc_out) (bfd *abfd,
1931 arelent *g,
1932 struct reloc_std_external *natptr)
252b5132
RH		 1933{
1934 int r_index;
1935 asymbol *sym = *(g->sym_ptr_ptr);
1936 int r_extern;
1937 unsigned int r_length;
1938 int r_pcrel;
1939 int r_baserel, r_jmptable, r_relative;
1940 asection *output_section = sym->section->output_section;
1941
923f08ff 1942 PUT_WORD (abfd, g->address, natptr->r_address);
252b5132 1943
f7c33884
NC		 1944 r_length = g->howto->size ; /* Size as a power of two. */
1945 r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */
252b5132
RH		 1946 /* XXX This relies on relocs coming from a.out files. */
1947 r_baserel = (g->howto->type & 8) != 0;
1948 r_jmptable = (g->howto->type & 16) != 0;
1949 r_relative = (g->howto->type & 32) != 0;
1950
f7c33884 1951 /* Name was clobbered by aout_write_syms to be symbol index. */
252b5132
RH		 1952
1953 /* If this relocation is relative to a symbol then set the
1954 r_index to the symbols index, and the r_extern bit.
1955
1956 Absolute symbols can come in in two ways, either as an offset
1957 from the abs section, or as a symbol which has an abs value.
f7c33884 1958 check for that here. */
252b5132 1959
252b5132
RH		 1960 if (bfd_is_com_section (output_section)
1961 || bfd_is_abs_section (output_section)
22184a77
NC		 1962 || bfd_is_und_section (output_section)
1963 /* PR gas/3041 a.out relocs against weak symbols
1964 must be treated as if they were against externs. */
1965 || (sym->flags & BSF_WEAK))
252b5132
RH		 1966 {
1967 if (bfd_abs_section_ptr->symbol == sym)
f7c33884
NC		 1968 {
1969 /* Whoops, looked like an abs symbol, but is
1970 really an offset from the abs section. */
1971 r_index = N_ABS;
1972 r_extern = 0;
1973 }
252b5132 1974 else
f7c33884
NC		 1975 {
1976 /* Fill in symbol. */
1977 r_extern = 1;
1978 r_index = (*(g->sym_ptr_ptr))->KEEPIT;
1979 }
252b5132
RH		 1980 }
1981 else
1982 {
f7c33884 1983 /* Just an ordinary section. */
252b5132
RH		 1984 r_extern = 0;
1985 r_index = output_section->target_index;
1986 }
1987
f7c33884 1988 /* Now the fun stuff. */
923f08ff
AM		 1989 if (bfd_header_big_endian (abfd))
1990 {
252b5132
RH		 1991 natptr->r_index[0] = r_index >> 16;
1992 natptr->r_index[1] = r_index >> 8;
1993 natptr->r_index[2] = r_index;
923f08ff
AM		 1994 natptr->r_type[0] = ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0)
1995 | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0)
1996 | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0)
1997 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0)
1998 | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0)
1999 | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG));
2000 }
2001 else
2002 {
2003 natptr->r_index[2] = r_index >> 16;
2004 natptr->r_index[1] = r_index >> 8;
2005 natptr->r_index[0] = r_index;
2006 natptr->r_type[0] = ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0)
2007 | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0)
2008 | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0)
2009 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0)
2010 | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0)
2011 | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE));
2012 }
252b5132
RH		 2013}
2014
f7c33884 2015/* Extended stuff. */
0ef5a5bd 2016/* Output extended relocation information to a file in target byte order. */
252b5132 2017
116c20d2
NC		 2018extern void NAME (aout, swap_ext_reloc_out)
2019 (bfd *, arelent *, struct reloc_ext_external *);
252b5132
RH		 2020
2021void
116c20d2
NC		 2022NAME (aout, swap_ext_reloc_out) (bfd *abfd,
2023 arelent *g,
2024 struct reloc_ext_external *natptr)
252b5132
RH		 2025{
2026 int r_index;
2027 int r_extern;
2028 unsigned int r_type;
dc810e39 2029 bfd_vma r_addend;
252b5132
RH		 2030 asymbol *sym = *(g->sym_ptr_ptr);
2031 asection *output_section = sym->section->output_section;
2032
2033 PUT_WORD (abfd, g->address, natptr->r_address);
2034
2035 r_type = (unsigned int) g->howto->type;
2036
2037 r_addend = g->addend;
2038 if ((sym->flags & BSF_SECTION_SYM) != 0)
2039 r_addend += (*(g->sym_ptr_ptr))->section->output_section->vma;
2040
2041 /* If this relocation is relative to a symbol then set the
2042 r_index to the symbols index, and the r_extern bit.
2043
2044 Absolute symbols can come in in two ways, either as an offset
2045 from the abs section, or as a symbol which has an abs value.
2046 check for that here. */
252b5132
RH		 2047 if (bfd_is_abs_section (bfd_get_section (sym)))
2048 {
2049 r_extern = 0;
2050 r_index = N_ABS;
2051 }
2052 else if ((sym->flags & BSF_SECTION_SYM) == 0)
2053 {
2054 if (bfd_is_und_section (bfd_get_section (sym))
2055 || (sym->flags & BSF_GLOBAL) != 0)
2056 r_extern = 1;
2057 else
2058 r_extern = 0;
2059 r_index = (*(g->sym_ptr_ptr))->KEEPIT;
2060 }
2061 else
2062 {
f7c33884 2063 /* Just an ordinary section. */
252b5132
RH		 2064 r_extern = 0;
2065 r_index = output_section->target_index;
2066 }
2067
f7c33884 2068 /* Now the fun stuff. */
923f08ff
AM		 2069 if (bfd_header_big_endian (abfd))
2070 {
2071 natptr->r_index[0] = r_index >> 16;
2072 natptr->r_index[1] = r_index >> 8;
2073 natptr->r_index[2] = r_index;
2074 natptr->r_type[0] = ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0)
2075 | (r_type << RELOC_EXT_BITS_TYPE_SH_BIG));
2076 }
2077 else
2078 {
2079 natptr->r_index[2] = r_index >> 16;
2080 natptr->r_index[1] = r_index >> 8;
2081 natptr->r_index[0] = r_index;
2082 natptr->r_type[0] = ((r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0)
2083 | (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE));
2084 }
252b5132
RH		 2085
2086 PUT_WORD (abfd, r_addend, natptr->r_addend);
2087}
2088
2089/* BFD deals internally with all things based from the section they're
2090 in. so, something in 10 bytes into a text section with a base of
2091 50 would have a symbol (.text+10) and know .text vma was 50.
2092
2093 Aout keeps all it's symbols based from zero, so the symbol would
2094 contain 60. This macro subs the base of each section from the value
923f08ff
AM		 2095 to give the true offset from the section. */
2096
2097#define MOVE_ADDRESS(ad) \
2098 if (r_extern) \
2099 { \
2100 /* Undefined symbol. */ \
2101 cache_ptr->sym_ptr_ptr = symbols + r_index; \
252b5132 2102 cache_ptr->addend = ad; \
252b5132 2103 } \
923f08ff
AM		 2104 else \
2105 { \
2106 /* Defined, section relative. Replace symbol with pointer to \
2107 symbol which points to section. */ \
2108 switch (r_index) \
2109 { \
2110 case N_TEXT: \
2111 case N_TEXT | N_EXT: \
2112 cache_ptr->sym_ptr_ptr = obj_textsec (abfd)->symbol_ptr_ptr; \
2113 cache_ptr->addend = ad - su->textsec->vma; \
2114 break; \
2115 case N_DATA: \
2116 case N_DATA | N_EXT: \
2117 cache_ptr->sym_ptr_ptr = obj_datasec (abfd)->symbol_ptr_ptr; \
2118 cache_ptr->addend = ad - su->datasec->vma; \
2119 break; \
2120 case N_BSS: \
2121 case N_BSS | N_EXT: \
2122 cache_ptr->sym_ptr_ptr = obj_bsssec (abfd)->symbol_ptr_ptr; \
2123 cache_ptr->addend = ad - su->bsssec->vma; \
2124 break; \
2125 default: \
2126 case N_ABS: \
2127 case N_ABS | N_EXT: \
2128 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \
2129 cache_ptr->addend = ad; \
2130 break; \
2131 } \
2132 }
252b5132
RH		 2133
2134void
116c20d2
NC		 2135NAME (aout, swap_ext_reloc_in) (bfd *abfd,
2136 struct reloc_ext_external *bytes,
2137 arelent *cache_ptr,
2138 asymbol **symbols,
2139 bfd_size_type symcount)
252b5132
RH		 2140{
2141 unsigned int r_index;
2142 int r_extern;
2143 unsigned int r_type;
2144 struct aoutdata *su = &(abfd->tdata.aout_data->a);
2145
2146 cache_ptr->address = (GET_SWORD (abfd, bytes->r_address));
2147
f7c33884 2148 /* Now the fun stuff. */
923f08ff
AM		 2149 if (bfd_header_big_endian (abfd))
2150 {
d45913a0
DA		 2151 r_index = (((unsigned int) bytes->r_index[0] << 16)
2152 | ((unsigned int) bytes->r_index[1] << 8)
923f08ff
AM		 2153 | bytes->r_index[2]);
2154 r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG));
2155 r_type = ((bytes->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
2156 >> RELOC_EXT_BITS_TYPE_SH_BIG);
2157 }
2158 else
2159 {
d45913a0
DA		 2160 r_index = (((unsigned int) bytes->r_index[2] << 16)
2161 | ((unsigned int) bytes->r_index[1] << 8)
923f08ff
AM		 2162 | bytes->r_index[0]);
2163 r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE));
2164 r_type = ((bytes->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
2165 >> RELOC_EXT_BITS_TYPE_SH_LITTLE);
2166 }
252b5132 2167
ad756e3f
AM		 2168 if (r_type < TABLE_SIZE (howto_table_ext))
2169 cache_ptr->howto = howto_table_ext + r_type;
2170 else
2171 cache_ptr->howto = NULL;
252b5132
RH		 2172
2173 /* Base relative relocs are always against the symbol table,
2174 regardless of the setting of r_extern. r_extern just reflects
2175 whether the symbol the reloc is against is local or global. */
d45913a0
DA		 2176 if (r_type == (unsigned int) RELOC_BASE10
2177 || r_type == (unsigned int) RELOC_BASE13
2178 || r_type == (unsigned int) RELOC_BASE22)
252b5132
RH		 2179 r_extern = 1;
2180
2181 if (r_extern && r_index > symcount)
2182 {
2183 /* We could arrange to return an error, but it might be useful
2184 to see the file even if it is bad. */
2185 r_extern = 0;
2186 r_index = N_ABS;
2187 }
2188
923f08ff 2189 MOVE_ADDRESS (GET_SWORD (abfd, bytes->r_addend));
252b5132
RH		 2190}
2191
2192void
116c20d2
NC		 2193NAME (aout, swap_std_reloc_in) (bfd *abfd,
2194 struct reloc_std_external *bytes,
2195 arelent *cache_ptr,
2196 asymbol **symbols,
2197 bfd_size_type symcount)
252b5132
RH		 2198{
2199 unsigned int r_index;
2200 int r_extern;
2201 unsigned int r_length;
2202 int r_pcrel;
2203 int r_baserel, r_jmptable, r_relative;
2204 struct aoutdata *su = &(abfd->tdata.aout_data->a);
2205 unsigned int howto_idx;
2206
dc810e39 2207 cache_ptr->address = H_GET_32 (abfd, bytes->r_address);
252b5132 2208
f7c33884 2209 /* Now the fun stuff. */
923f08ff
AM		 2210 if (bfd_header_big_endian (abfd))
2211 {
d45913a0
DA		 2212 r_index = (((unsigned int) bytes->r_index[0] << 16)
2213 | ((unsigned int) bytes->r_index[1] << 8)
923f08ff
AM		 2214 | bytes->r_index[2]);
2215 r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
2216 r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
2217 r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_BIG));
2218 r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG));
2219 r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG));
2220 r_length = ((bytes->r_type[0] & RELOC_STD_BITS_LENGTH_BIG)
2221 >> RELOC_STD_BITS_LENGTH_SH_BIG);
2222 }
2223 else
2224 {
d45913a0
DA		 2225 r_index = (((unsigned int) bytes->r_index[2] << 16)
2226 | ((unsigned int) bytes->r_index[1] << 8)
923f08ff
AM		 2227 | bytes->r_index[0]);
2228 r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
2229 r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
2230 r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE));
2231 r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE));
2232 r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE));
2233 r_length = ((bytes->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE)
2234 >> RELOC_STD_BITS_LENGTH_SH_LITTLE);
2235 }
252b5132 2236
923f08ff
AM		 2237 howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel
2238 + 16 * r_jmptable + 32 * r_relative);
ad756e3f
AM		 2239 if (howto_idx < TABLE_SIZE (howto_table_std))
2240 {
2241 cache_ptr->howto = howto_table_std + howto_idx;
2242 if (cache_ptr->howto->type == (unsigned int) -1)
2243 cache_ptr->howto = NULL;
2244 }
2245 else
2246 cache_ptr->howto = NULL;
252b5132
RH		 2247
2248 /* Base relative relocs are always against the symbol table,
2249 regardless of the setting of r_extern. r_extern just reflects
2250 whether the symbol the reloc is against is local or global. */
2251 if (r_baserel)
2252 r_extern = 1;
2253
2254 if (r_extern && r_index > symcount)
2255 {
2256 /* We could arrange to return an error, but it might be useful
2257 to see the file even if it is bad. */
2258 r_extern = 0;
2259 r_index = N_ABS;
2260 }
2261
923f08ff 2262 MOVE_ADDRESS (0);
252b5132
RH		 2263}
2264
2265/* Read and swap the relocs for a section. */
2266
b34976b6 2267bfd_boolean
116c20d2 2268NAME (aout, slurp_reloc_table) (bfd *abfd, sec_ptr asect, asymbol **symbols)
252b5132 2269{
dc810e39 2270 bfd_size_type count;
252b5132 2271 bfd_size_type reloc_size;
116c20d2 2272 void * relocs;
252b5132
RH		 2273 arelent *reloc_cache;
2274 size_t each_size;
2275 unsigned int counter = 0;
2276 arelent *cache_ptr;
dc810e39 2277 bfd_size_type amt;
252b5132
RH		 2278
2279 if (asect->relocation)
b34976b6 2280 return TRUE;
252b5132
RH		 2281
2282 if (asect->flags & SEC_CONSTRUCTOR)
b34976b6 2283 return TRUE;
252b5132
RH		 2284
2285 if (asect == obj_datasec (abfd))
923f08ff 2286 reloc_size = exec_hdr (abfd)->a_drsize;
252b5132 2287 else if (asect == obj_textsec (abfd))
923f08ff 2288 reloc_size = exec_hdr (abfd)->a_trsize;
252b5132
RH		 2289 else if (asect == obj_bsssec (abfd))
2290 reloc_size = 0;
2291 else
2292 {
2293 bfd_set_error (bfd_error_invalid_operation);
b34976b6 2294 return FALSE;
252b5132
RH		 2295 }
2296
078c4bfc
MS		 2297 if (reloc_size == 0)
2298 return TRUE; /* Nothing to be done. */
2299
252b5132 2300 if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0)
b34976b6 2301 return FALSE;
252b5132
RH		 2302
2303 each_size = obj_reloc_entry_size (abfd);
2304
2305 count = reloc_size / each_size;
078c4bfc
MS		 2306 if (count == 0)
2307 return TRUE; /* Nothing to be done. */
252b5132 2308
dc810e39 2309 amt = count * sizeof (arelent);
a50b1753 2310 reloc_cache = (arelent *) bfd_zmalloc (amt);
078c4bfc 2311 if (reloc_cache == NULL)
b34976b6 2312 return FALSE;
252b5132 2313
dc810e39 2314 relocs = bfd_malloc (reloc_size);
078c4bfc 2315 if (relocs == NULL)
252b5132
RH		 2316 {
2317 free (reloc_cache);
b34976b6 2318 return FALSE;
252b5132
RH		 2319 }
2320
dc810e39 2321 if (bfd_bread (relocs, reloc_size, abfd) != reloc_size)
252b5132
RH		 2322 {
2323 free (relocs);
2324 free (reloc_cache);
b34976b6 2325 return FALSE;
252b5132
RH		 2326 }
2327
2328 cache_ptr = reloc_cache;
2329 if (each_size == RELOC_EXT_SIZE)
2330 {
dc810e39 2331 struct reloc_ext_external *rptr = (struct reloc_ext_external *) relocs;
252b5132
RH		 2332
2333 for (; counter < count; counter++, rptr++, cache_ptr++)
1642229e 2334 MY_swap_ext_reloc_in (abfd, rptr, cache_ptr, symbols,
dc810e39 2335 (bfd_size_type) bfd_get_symcount (abfd));
252b5132
RH		 2336 }
2337 else
2338 {
dc810e39 2339 struct reloc_std_external *rptr = (struct reloc_std_external *) relocs;
252b5132
RH		 2340
2341 for (; counter < count; counter++, rptr++, cache_ptr++)
2342 MY_swap_std_reloc_in (abfd, rptr, cache_ptr, symbols,
dc810e39 2343 (bfd_size_type) bfd_get_symcount (abfd));
252b5132
RH		 2344 }
2345
2346 free (relocs);
2347
2348 asect->relocation = reloc_cache;
2349 asect->reloc_count = cache_ptr - reloc_cache;
2350
b34976b6 2351 return TRUE;
252b5132
RH		 2352}
2353
2354/* Write out a relocation section into an object file. */
2355
b34976b6 2356bfd_boolean
116c20d2 2357NAME (aout, squirt_out_relocs) (bfd *abfd, asection *section)
252b5132
RH		 2358{
2359 arelent **generic;
2360 unsigned char *native, *natptr;
2361 size_t each_size;
2362
2363 unsigned int count = section->reloc_count;
dc810e39 2364 bfd_size_type natsize;
252b5132
RH		 2365
2366 if (count == 0 || section->orelocation == NULL)
b34976b6 2367 return TRUE;
252b5132
RH		 2368
2369 each_size = obj_reloc_entry_size (abfd);
dc810e39 2370 natsize = (bfd_size_type) each_size * count;
a50b1753 2371 native = (unsigned char *) bfd_zalloc (abfd, natsize);
252b5132 2372 if (!native)
b34976b6 2373 return FALSE;
252b5132
RH		 2374
2375 generic = section->orelocation;
2376
2377 if (each_size == RELOC_EXT_SIZE)
2378 {
2379 for (natptr = native;
2380 count != 0;
2381 --count, natptr += each_size, ++generic)
1642229e
HPN		 2382 MY_swap_ext_reloc_out (abfd, *generic,
2383 (struct reloc_ext_external *) natptr);
252b5132
RH		 2384 }
2385 else
2386 {
2387 for (natptr = native;
2388 count != 0;
2389 --count, natptr += each_size, ++generic)
923f08ff
AM		 2390 MY_swap_std_reloc_out (abfd, *generic,
2391 (struct reloc_std_external *) natptr);
252b5132
RH		 2392 }
2393
116c20d2 2394 if (bfd_bwrite ((void *) native, natsize, abfd) != natsize)
dc810e39 2395 {
923f08ff 2396 bfd_release (abfd, native);
b34976b6 2397 return FALSE;
dc810e39 2398 }
252b5132
RH		 2399 bfd_release (abfd, native);
2400
b34976b6 2401 return TRUE;
252b5132
RH		 2402}
2403
f7c33884
NC		 2404/* This is stupid. This function should be a boolean predicate. */
2405
252b5132 2406long
116c20d2
NC		 2407NAME (aout, canonicalize_reloc) (bfd *abfd,
2408 sec_ptr section,
2409 arelent **relptr,
2410 asymbol **symbols)
252b5132
RH		 2411{
2412 arelent *tblptr = section->relocation;
2413 unsigned int count;
2414
2415 if (section == obj_bsssec (abfd))
2416 {
2417 *relptr = NULL;
2418 return 0;
2419 }
2420
116c20d2 2421 if (!(tblptr || NAME (aout, slurp_reloc_table) (abfd, section, symbols)))
252b5132
RH		 2422 return -1;
2423
923f08ff
AM		 2424 if (section->flags & SEC_CONSTRUCTOR)
2425 {
2426 arelent_chain *chain = section->constructor_chain;
2427 for (count = 0; count < section->reloc_count; count ++)
2428 {
2429 *relptr ++ = &chain->relent;
2430 chain = chain->next;
2431 }
252b5132 2432 }
923f08ff
AM		 2433 else
2434 {
2435 tblptr = section->relocation;
252b5132 2436
923f08ff
AM		 2437 for (count = 0; count++ < section->reloc_count; )
2438 {
2439 *relptr++ = tblptr++;
2440 }
2441 }
252b5132
RH		 2442 *relptr = 0;
2443
2444 return section->reloc_count;
2445}
2446
2447long
116c20d2 2448NAME (aout, get_reloc_upper_bound) (bfd *abfd, sec_ptr asect)
252b5132 2449{
923f08ff
AM		 2450 if (bfd_get_format (abfd) != bfd_object)
2451 {
2452 bfd_set_error (bfd_error_invalid_operation);
2453 return -1;
2454 }
f7c33884 2455
923f08ff 2456 if (asect->flags & SEC_CONSTRUCTOR)
116c20d2 2457 return sizeof (arelent *) * (asect->reloc_count + 1);
252b5132
RH		 2458
2459 if (asect == obj_datasec (abfd))
116c20d2
NC		 2460 return sizeof (arelent *)
2461 * ((exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd))
2462 + 1);
252b5132
RH		 2463
2464 if (asect == obj_textsec (abfd))
116c20d2
NC		 2465 return sizeof (arelent *)
2466 * ((exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd))
2467 + 1);
252b5132
RH		 2468
2469 if (asect == obj_bsssec (abfd))
2470 return sizeof (arelent *);
2471
2472 if (asect == obj_bsssec (abfd))
2473 return 0;
2474
2475 bfd_set_error (bfd_error_invalid_operation);
2476 return -1;
2477}
252b5132
RH		 2478\f
2479long
116c20d2 2480NAME (aout, get_symtab_upper_bound) (bfd *abfd)
252b5132 2481{
116c20d2 2482 if (!NAME (aout, slurp_symbol_table) (abfd))
252b5132
RH		 2483 return -1;
2484
2485 return (bfd_get_symcount (abfd)+1) * (sizeof (aout_symbol_type *));
2486}
2487
1725a96e 2488alent *
116c20d2
NC		 2489NAME (aout, get_lineno) (bfd *ignore_abfd ATTRIBUTE_UNUSED,
2490 asymbol *ignore_symbol ATTRIBUTE_UNUSED)
252b5132 2491{
116c20d2 2492 return NULL;
252b5132
RH		 2493}
2494
252b5132 2495void
116c20d2
NC		 2496NAME (aout, get_symbol_info) (bfd *ignore_abfd ATTRIBUTE_UNUSED,
2497 asymbol *symbol,
2498 symbol_info *ret)
252b5132
RH		 2499{
2500 bfd_symbol_info (symbol, ret);
2501
2502 if (ret->type == '?')
2503 {
923f08ff 2504 int type_code = aout_symbol (symbol)->type & 0xff;
252b5132
RH		 2505 const char *stab_name = bfd_get_stab_name (type_code);
2506 static char buf[10];
2507
2508 if (stab_name == NULL)
2509 {
e60b52c6 2510 sprintf (buf, "(%d)", type_code);
252b5132
RH		 2511 stab_name = buf;
2512 }
2513 ret->type = '-';
2514 ret->stab_type = type_code;
923f08ff
AM		 2515 ret->stab_other = (unsigned) (aout_symbol (symbol)->other & 0xff);
2516 ret->stab_desc = (unsigned) (aout_symbol (symbol)->desc & 0xffff);
252b5132
RH		 2517 ret->stab_name = stab_name;
2518 }
2519}
2520
252b5132 2521void
116c20d2
NC		 2522NAME (aout, print_symbol) (bfd *abfd,
2523 void * afile,
2524 asymbol *symbol,
2525 bfd_print_symbol_type how)
252b5132
RH		 2526{
2527 FILE *file = (FILE *)afile;
2528
923f08ff 2529 switch (how)
252b5132 2530 {
923f08ff
AM		 2531 case bfd_print_symbol_name:
2532 if (symbol->name)
2533 fprintf (file,"%s", symbol->name);
2534 break;
2535 case bfd_print_symbol_more:
2536 fprintf (file,"%4x %2x %2x",
2537 (unsigned) (aout_symbol (symbol)->desc & 0xffff),
2538 (unsigned) (aout_symbol (symbol)->other & 0xff),
2539 (unsigned) (aout_symbol (symbol)->type));
2540 break;
2541 case bfd_print_symbol_all:
2542 {
2543 const char *section_name = symbol->section->name;
252b5132 2544
116c20d2 2545 bfd_print_symbol_vandf (abfd, (void *)file, symbol);
252b5132 2546
923f08ff
AM		 2547 fprintf (file," %-5s %04x %02x %02x",
2548 section_name,
2549 (unsigned) (aout_symbol (symbol)->desc & 0xffff),
2550 (unsigned) (aout_symbol (symbol)->other & 0xff),
2551 (unsigned) (aout_symbol (symbol)->type & 0xff));
2552 if (symbol->name)
2553 fprintf (file," %s", symbol->name);
2554 }
2555 break;
252b5132 2556 }
252b5132
RH		 2557}
2558
2559/* If we don't have to allocate more than 1MB to hold the generic
2560 symbols, we use the generic minisymbol methord: it's faster, since
2561 it only translates the symbols once, not multiple times. */
2562#define MINISYM_THRESHOLD (1000000 / sizeof (asymbol))
2563
2564/* Read minisymbols. For minisymbols, we use the unmodified a.out
2565 symbols. The minisymbol_to_symbol function translates these into
2566 BFD asymbol structures. */
2567
2568long
116c20d2
NC		 2569NAME (aout, read_minisymbols) (bfd *abfd,
2570 bfd_boolean dynamic,
2571 void * *minisymsp,
2572 unsigned int *sizep)
252b5132
RH		 2573{
2574 if (dynamic)
116c20d2
NC		 2575 /* We could handle the dynamic symbols here as well, but it's
2576 easier to hand them off. */
2577 return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep);
252b5132
RH		 2578
2579 if (! aout_get_external_symbols (abfd))
2580 return -1;
2581
2582 if (obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD)
2583 return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep);
2584
116c20d2 2585 *minisymsp = (void *) obj_aout_external_syms (abfd);
252b5132
RH		 2586
2587 /* By passing the external symbols back from this routine, we are
2588 giving up control over the memory block. Clear
2589 obj_aout_external_syms, so that we do not try to free it
2590 ourselves. */
2591 obj_aout_external_syms (abfd) = NULL;
2592
2593 *sizep = EXTERNAL_NLIST_SIZE;
2594 return obj_aout_external_sym_count (abfd);
2595}
2596
2597/* Convert a minisymbol to a BFD asymbol. A minisymbol is just an
2598 unmodified a.out symbol. The SYM argument is a structure returned
2599 by bfd_make_empty_symbol, which we fill in here. */
2600
2601asymbol *
116c20d2
NC		 2602NAME (aout, minisymbol_to_symbol) (bfd *abfd,
2603 bfd_boolean dynamic,
2604 const void * minisym,
2605 asymbol *sym)
252b5132
RH		 2606{
2607 if (dynamic
2608 || obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD)
2609 return _bfd_generic_minisymbol_to_symbol (abfd, dynamic, minisym, sym);
2610
2611 memset (sym, 0, sizeof (aout_symbol_type));
2612
2613 /* We call translate_symbol_table to translate a single symbol. */
116c20d2 2614 if (! (NAME (aout, translate_symbol_table)
252b5132
RH		 2615 (abfd,
2616 (aout_symbol_type *) sym,
2617 (struct external_nlist *) minisym,
2618 (bfd_size_type) 1,
2619 obj_aout_external_strings (abfd),
2620 obj_aout_external_string_size (abfd),
b34976b6 2621 FALSE)))
252b5132
RH		 2622 return NULL;
2623
2624 return sym;
2625}
2626
f7c33884
NC		 2627/* Provided a BFD, a section and an offset into the section, calculate
2628 and return the name of the source file and the line nearest to the
2629 wanted location. */
252b5132 2630
b34976b6 2631bfd_boolean
116c20d2 2632NAME (aout, find_nearest_line) (bfd *abfd,
116c20d2 2633 asymbol **symbols,
fb167eb2 2634 asection *section,
116c20d2
NC		 2635 bfd_vma offset,
2636 const char **filename_ptr,
2637 const char **functionname_ptr,
fb167eb2
AM		 2638 unsigned int *line_ptr,
2639 unsigned int *disriminator_ptr)
252b5132 2640{
f7c33884 2641 /* Run down the file looking for the filename, function and linenumber. */
252b5132 2642 asymbol **p;
dc810e39
AM		 2643 const char *directory_name = NULL;
2644 const char *main_file_name = NULL;
2645 const char *current_file_name = NULL;
116c20d2 2646 const char *line_file_name = NULL; /* Value of current_file_name at line number. */
dc810e39 2647 const char *line_directory_name = NULL; /* Value of directory_name at line number. */
252b5132
RH		 2648 bfd_vma low_line_vma = 0;
2649 bfd_vma low_func_vma = 0;
2650 asymbol *func = 0;
dc810e39 2651 bfd_size_type filelen, funclen;
252b5132
RH		 2652 char *buf;
2653
2654 *filename_ptr = abfd->filename;
2655 *functionname_ptr = 0;
2656 *line_ptr = 0;
fb167eb2
AM		 2657 if (disriminator_ptr)
2658 *disriminator_ptr = 0;
f7c33884 2659
116c20d2 2660 if (symbols != NULL)
923f08ff
AM		 2661 {
2662 for (p = symbols; *p; p++)
2663 {
2664 aout_symbol_type *q = (aout_symbol_type *) (*p);
2665 next:
2666 switch (q->type)
2667 {
2668 case N_TEXT:
2669 /* If this looks like a file name symbol, and it comes after
2670 the line number we have found so far, but before the
2671 offset, then we have probably not found the right line
2672 number. */
2673 if (q->symbol.value <= offset
2674 && ((q->symbol.value > low_line_vma
2675 && (line_file_name != NULL
2676 || *line_ptr != 0))
2677 || (q->symbol.value > low_func_vma
2678 && func != NULL)))
2679 {
2680 const char *symname;
252b5132 2681
923f08ff
AM		 2682 symname = q->symbol.name;
2683 if (strcmp (symname + strlen (symname) - 2, ".o") == 0)
2684 {
2685 if (q->symbol.value > low_line_vma)
2686 {
2687 *line_ptr = 0;
2688 line_file_name = NULL;
2689 }
2690 if (q->symbol.value > low_func_vma)
2691 func = NULL;
2692 }
2693 }
2694 break;
252b5132 2695
923f08ff
AM		 2696 case N_SO:
2697 /* If this symbol is less than the offset, but greater than
2698 the line number we have found so far, then we have not
2699 found the right line number. */
2700 if (q->symbol.value <= offset)
2701 {
2702 if (q->symbol.value > low_line_vma)
2703 {
2704 *line_ptr = 0;
2705 line_file_name = NULL;
2706 }
2707 if (q->symbol.value > low_func_vma)
2708 func = NULL;
2709 }
252b5132 2710
923f08ff
AM		 2711 main_file_name = current_file_name = q->symbol.name;
2712 /* Look ahead to next symbol to check if that too is an N_SO. */
2713 p++;
2714 if (*p == NULL)
c3864421 2715 goto done;
923f08ff
AM		 2716 q = (aout_symbol_type *) (*p);
2717 if (q->type != (int)N_SO)
2718 goto next;
2719
2720 /* Found a second N_SO First is directory; second is filename. */
2721 directory_name = current_file_name;
2722 main_file_name = current_file_name = q->symbol.name;
2723 if (obj_textsec (abfd) != section)
2724 goto done;
2725 break;
2726 case N_SOL:
2727 current_file_name = q->symbol.name;
2728 break;
252b5132 2729
923f08ff 2730 case N_SLINE:
252b5132 2731
923f08ff
AM		 2732 case N_DSLINE:
2733 case N_BSLINE:
2734 /* We'll keep this if it resolves nearer than the one we have
2735 already. */
2736 if (q->symbol.value >= low_line_vma
2737 && q->symbol.value <= offset)
2738 {
2739 *line_ptr = q->desc;
2740 low_line_vma = q->symbol.value;
2741 line_file_name = current_file_name;
2742 line_directory_name = directory_name;
2743 }
2744 break;
2745 case N_FUN:
2746 {
f7c33884 2747 /* We'll keep this if it is nearer than the one we have already. */
923f08ff 2748 if (q->symbol.value >= low_func_vma &&
f7c33884
NC		 2749 q->symbol.value <= offset)
2750 {
2751 low_func_vma = q->symbol.value;
2752 func = (asymbol *)q;
2753 }
923f08ff
AM		 2754 else if (q->symbol.value > offset)
2755 goto done;
2756 }
2757 break;
2758 }
252b5132 2759 }
252b5132 2760 }
252b5132
RH		 2761
2762 done:
2763 if (*line_ptr != 0)
2764 {
2765 main_file_name = line_file_name;
2766 directory_name = line_directory_name;
2767 }
2768
2769 if (main_file_name == NULL
5af11cab 2770 || IS_ABSOLUTE_PATH (main_file_name)
252b5132
RH		 2771 || directory_name == NULL)
2772 filelen = 0;
2773 else
2774 filelen = strlen (directory_name) + strlen (main_file_name);
f7c33884 2775
252b5132
RH		 2776 if (func == NULL)
2777 funclen = 0;
2778 else
2779 funclen = strlen (bfd_asymbol_name (func));
2780
2781 if (adata (abfd).line_buf != NULL)
2782 free (adata (abfd).line_buf);
f7c33884 2783
252b5132
RH		 2784 if (filelen + funclen == 0)
2785 adata (abfd).line_buf = buf = NULL;
2786 else
2787 {
a50b1753 2788 buf = (char *) bfd_malloc (filelen + funclen + 3);
252b5132
RH		 2789 adata (abfd).line_buf = buf;
2790 if (buf == NULL)
b34976b6 2791 return FALSE;
252b5132
RH		 2792 }
2793
2794 if (main_file_name != NULL)
2795 {
5af11cab 2796 if (IS_ABSOLUTE_PATH (main_file_name) || directory_name == NULL)
252b5132
RH		 2797 *filename_ptr = main_file_name;
2798 else
2799 {
2800 sprintf (buf, "%s%s", directory_name, main_file_name);
2801 *filename_ptr = buf;
2802 buf += filelen + 1;
2803 }
2804 }
2805
2806 if (func)
2807 {
2808 const char *function = func->name;
dc810e39 2809 char *colon;
252b5132
RH		 2810
2811 /* The caller expects a symbol name. We actually have a
2812 function name, without the leading underscore. Put the
2813 underscore back in, so that the caller gets a symbol name. */
2814 if (bfd_get_symbol_leading_char (abfd) == '\0')
2815 strcpy (buf, function);
2816 else
2817 {
2818 buf[0] = bfd_get_symbol_leading_char (abfd);
2819 strcpy (buf + 1, function);
2820 }
f7c33884 2821 /* Have to remove : stuff. */
dc810e39
AM		 2822 colon = strchr (buf, ':');
2823 if (colon != NULL)
2824 *colon = '\0';
252b5132
RH		 2825 *functionname_ptr = buf;
2826 }
2827
b34976b6 2828 return TRUE;
252b5132
RH		 2829}
2830
252b5132 2831int
a6b96beb
AM		 2832NAME (aout, sizeof_headers) (bfd *abfd,
2833 struct bfd_link_info *info ATTRIBUTE_UNUSED)
252b5132 2834{
923f08ff 2835 return adata (abfd).exec_bytes_size;
252b5132
RH		 2836}
2837
2838/* Free all information we have cached for this BFD. We can always
2839 read it again later if we need it. */
2840
b34976b6 2841bfd_boolean
116c20d2 2842NAME (aout, bfd_free_cached_info) (bfd *abfd)
252b5132
RH		 2843{
2844 asection *o;
2845
920581c5
L		 2846 if (bfd_get_format (abfd) != bfd_object
2847 || abfd->tdata.aout_data == NULL)
b34976b6 2848 return TRUE;
252b5132
RH		 2849
2850#define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; }
2851 BFCI_FREE (obj_aout_symbols (abfd));
2852#ifdef USE_MMAP
2853 obj_aout_external_syms (abfd) = 0;
2854 bfd_free_window (&obj_aout_sym_window (abfd));
2855 bfd_free_window (&obj_aout_string_window (abfd));
2856 obj_aout_external_strings (abfd) = 0;
2857#else
2858 BFCI_FREE (obj_aout_external_syms (abfd));
2859 BFCI_FREE (obj_aout_external_strings (abfd));
2860#endif
116c20d2 2861 for (o = abfd->sections; o != NULL; o = o->next)
252b5132
RH		 2862 BFCI_FREE (o->relocation);
2863#undef BFCI_FREE
2864
b34976b6 2865 return TRUE;
252b5132
RH		 2866}
2867\f
2868/* a.out link code. */
2869
252b5132
RH		 2870/* Routine to create an entry in an a.out link hash table. */
2871
2872struct bfd_hash_entry *
116c20d2
NC		 2873NAME (aout, link_hash_newfunc) (struct bfd_hash_entry *entry,
2874 struct bfd_hash_table *table,
2875 const char *string)
252b5132
RH		 2876{
2877 struct aout_link_hash_entry *ret = (struct aout_link_hash_entry *) entry;
2878
2879 /* Allocate the structure if it has not already been allocated by a
2880 subclass. */
116c20d2 2881 if (ret == NULL)
a50b1753
NC		 2882 ret = (struct aout_link_hash_entry *) bfd_hash_allocate (table,
2883 sizeof (* ret));
116c20d2
NC		 2884 if (ret == NULL)
2885 return NULL;
252b5132
RH		 2886
2887 /* Call the allocation method of the superclass. */
2888 ret = ((struct aout_link_hash_entry *)
2889 _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2890 table, string));
2891 if (ret)
2892 {
2893 /* Set local fields. */
b34976b6 2894 ret->written = FALSE;
252b5132
RH		 2895 ret->indx = -1;
2896 }
2897
2898 return (struct bfd_hash_entry *) ret;
2899}
2900
2901/* Initialize an a.out link hash table. */
2902
b34976b6 2903bfd_boolean
116c20d2
NC		 2904NAME (aout, link_hash_table_init) (struct aout_link_hash_table *table,
2905 bfd *abfd,
2906 struct bfd_hash_entry *(*newfunc)
2907 (struct bfd_hash_entry *, struct bfd_hash_table *,
66eb6687
AM		 2908 const char *),
2909 unsigned int entsize)
252b5132 2910{
66eb6687 2911 return _bfd_link_hash_table_init (&table->root, abfd, newfunc, entsize);
252b5132
RH		 2912}
2913
2914/* Create an a.out link hash table. */
2915
2916struct bfd_link_hash_table *
116c20d2 2917NAME (aout, link_hash_table_create) (bfd *abfd)
252b5132
RH		 2918{
2919 struct aout_link_hash_table *ret;
116c20d2 2920 bfd_size_type amt = sizeof (* ret);
252b5132 2921
a50b1753 2922 ret = (struct aout_link_hash_table *) bfd_malloc (amt);
252b5132 2923 if (ret == NULL)
116c20d2 2924 return NULL;
5ed6aba4 2925
66eb6687
AM		 2926 if (!NAME (aout, link_hash_table_init) (ret, abfd,
2927 NAME (aout, link_hash_newfunc),
2928 sizeof (struct aout_link_hash_entry)))
252b5132
RH		 2929 {
2930 free (ret);
116c20d2 2931 return NULL;
252b5132
RH		 2932 }
2933 return &ret->root;
2934}
2935
116c20d2 2936/* Add all symbols from an object file to the hash table. */
252b5132 2937
b34976b6 2938static bfd_boolean
116c20d2 2939aout_link_add_symbols (bfd *abfd, struct bfd_link_info *info)
252b5132 2940{
116c20d2
NC		 2941 bfd_boolean (*add_one_symbol)
2942 (struct bfd_link_info *, bfd *, const char *, flagword, asection *,
2943 bfd_vma, const char *, bfd_boolean, bfd_boolean,
2944 struct bfd_link_hash_entry **);
2945 struct external_nlist *syms;
2946 bfd_size_type sym_count;
2947 char *strings;
2948 bfd_boolean copy;
2949 struct aout_link_hash_entry **sym_hash;
2950 struct external_nlist *p;
2951 struct external_nlist *pend;
2952 bfd_size_type amt;
252b5132 2953
116c20d2
NC		 2954 syms = obj_aout_external_syms (abfd);
2955 sym_count = obj_aout_external_sym_count (abfd);
2956 strings = obj_aout_external_strings (abfd);
2957 if (info->keep_memory)
2958 copy = FALSE;
2959 else
2960 copy = TRUE;
252b5132 2961
116c20d2 2962 if (aout_backend_info (abfd)->add_dynamic_symbols != NULL)
252b5132 2963 {
116c20d2
NC		 2964 if (! ((*aout_backend_info (abfd)->add_dynamic_symbols)
2965 (abfd, info, &syms, &sym_count, &strings)))
b34976b6 2966 return FALSE;
252b5132
RH		 2967 }
2968
20c6e70e
MS		 2969 if (sym_count == 0)
2970 return TRUE; /* Nothing to do. */
2971
116c20d2
NC		 2972 /* We keep a list of the linker hash table entries that correspond
2973 to particular symbols. We could just look them up in the hash
2974 table, but keeping the list is more efficient. Perhaps this
2975 should be conditional on info->keep_memory. */
2976 amt = sym_count * sizeof (struct aout_link_hash_entry *);
a50b1753 2977 sym_hash = (struct aout_link_hash_entry **) bfd_alloc (abfd, amt);
20c6e70e 2978 if (sym_hash == NULL)
116c20d2
NC		 2979 return FALSE;
2980 obj_aout_sym_hashes (abfd) = sym_hash;
252b5132 2981
116c20d2
NC		 2982 add_one_symbol = aout_backend_info (abfd)->add_one_symbol;
2983 if (add_one_symbol == NULL)
2984 add_one_symbol = _bfd_generic_link_add_one_symbol;
252b5132 2985
116c20d2
NC		 2986 p = syms;
2987 pend = p + sym_count;
2988 for (; p < pend; p++, sym_hash++)
252b5132 2989 {
116c20d2 2990 int type;
252b5132 2991 const char *name;
116c20d2
NC		 2992 bfd_vma value;
2993 asection *section;
2994 flagword flags;
2995 const char *string;
252b5132 2996
116c20d2 2997 *sym_hash = NULL;
252b5132 2998
116c20d2 2999 type = H_GET_8 (abfd, p->e_type);
252b5132 3000
116c20d2
NC		 3001 /* Ignore debugging symbols. */
3002 if ((type & N_STAB) != 0)
3003 continue;
252b5132 3004
116c20d2
NC		 3005 name = strings + GET_WORD (abfd, p->e_strx);
3006 value = GET_WORD (abfd, p->e_value);
3007 flags = BSF_GLOBAL;
3008 string = NULL;
3009 switch (type)
252b5132 3010 {
116c20d2
NC		 3011 default:
3012 abort ();
f7c33884 3013
116c20d2
NC		 3014 case N_UNDF:
3015 case N_ABS:
3016 case N_TEXT:
3017 case N_DATA:
3018 case N_BSS:
3019 case N_FN_SEQ:
3020 case N_COMM:
3021 case N_SETV:
3022 case N_FN:
3023 /* Ignore symbols that are not externally visible. */
3024 continue;
3025 case N_INDR:
3026 /* Ignore local indirect symbol. */
3027 ++p;
3028 ++sym_hash;
3029 continue;
252b5132 3030
116c20d2
NC		 3031 case N_UNDF | N_EXT:
3032 if (value == 0)
f7c33884 3033 {
116c20d2
NC		 3034 section = bfd_und_section_ptr;
3035 flags = 0;
252b5132
RH		 3036 }
3037 else
3038 section = bfd_com_section_ptr;
3039 break;
3040 case N_ABS | N_EXT:
3041 section = bfd_abs_section_ptr;
3042 break;
3043 case N_TEXT | N_EXT:
3044 section = obj_textsec (abfd);
3045 value -= bfd_get_section_vma (abfd, section);
3046 break;
3047 case N_DATA | N_EXT:
3048 case N_SETV | N_EXT:
3049 /* Treat N_SETV symbols as N_DATA symbol; see comment in
3050 translate_from_native_sym_flags. */
3051 section = obj_datasec (abfd);
3052 value -= bfd_get_section_vma (abfd, section);
3053 break;
3054 case N_BSS | N_EXT:
3055 section = obj_bsssec (abfd);
3056 value -= bfd_get_section_vma (abfd, section);
3057 break;
3058 case N_INDR | N_EXT:
3059 /* An indirect symbol. The next symbol is the symbol
3060 which this one really is. */
3061 BFD_ASSERT (p + 1 < pend);
3062 ++p;
3063 string = strings + GET_WORD (abfd, p->e_strx);
3064 section = bfd_ind_section_ptr;
3065 flags |= BSF_INDIRECT;
3066 break;
3067 case N_COMM | N_EXT:
3068 section = bfd_com_section_ptr;
3069 break;
3070 case N_SETA: case N_SETA | N_EXT:
3071 section = bfd_abs_section_ptr;
3072 flags |= BSF_CONSTRUCTOR;
3073 break;
3074 case N_SETT: case N_SETT | N_EXT:
3075 section = obj_textsec (abfd);
3076 flags |= BSF_CONSTRUCTOR;
3077 value -= bfd_get_section_vma (abfd, section);
3078 break;
3079 case N_SETD: case N_SETD | N_EXT:
3080 section = obj_datasec (abfd);
3081 flags |= BSF_CONSTRUCTOR;
3082 value -= bfd_get_section_vma (abfd, section);
3083 break;
3084 case N_SETB: case N_SETB | N_EXT:
3085 section = obj_bsssec (abfd);
3086 flags |= BSF_CONSTRUCTOR;
3087 value -= bfd_get_section_vma (abfd, section);
3088 break;
3089 case N_WARNING:
3090 /* A warning symbol. The next symbol is the one to warn
9f400ee9
HPN		 3091 about. If there is no next symbol, just look away. */
3092 if (p + 1 >= pend)
3093 return TRUE;
252b5132
RH		 3094 ++p;
3095 string = name;
3096 name = strings + GET_WORD (abfd, p->e_strx);
3097 section = bfd_und_section_ptr;
3098 flags |= BSF_WARNING;
3099 break;
3100 case N_WEAKU:
3101 section = bfd_und_section_ptr;
3102 flags = BSF_WEAK;
3103 break;
3104 case N_WEAKA:
3105 section = bfd_abs_section_ptr;
3106 flags = BSF_WEAK;
3107 break;
3108 case N_WEAKT:
3109 section = obj_textsec (abfd);
3110 value -= bfd_get_section_vma (abfd, section);
3111 flags = BSF_WEAK;
3112 break;
3113 case N_WEAKD:
3114 section = obj_datasec (abfd);
3115 value -= bfd_get_section_vma (abfd, section);
3116 flags = BSF_WEAK;
3117 break;
3118 case N_WEAKB:
3119 section = obj_bsssec (abfd);
3120 value -= bfd_get_section_vma (abfd, section);
3121 flags = BSF_WEAK;
3122 break;
3123 }
3124
3125 if (! ((*add_one_symbol)
b34976b6 3126 (info, abfd, name, flags, section, value, string, copy, FALSE,
252b5132 3127 (struct bfd_link_hash_entry **) sym_hash)))
b34976b6 3128 return FALSE;
252b5132
RH		 3129
3130 /* Restrict the maximum alignment of a common symbol based on
3131 the architecture, since a.out has no way to represent
3132 alignment requirements of a section in a .o file. FIXME:
3133 This isn't quite right: it should use the architecture of the
3134 output file, not the input files. */
3135 if ((*sym_hash)->root.type == bfd_link_hash_common
3136 && ((*sym_hash)->root.u.c.p->alignment_power >
3137 bfd_get_arch_info (abfd)->section_align_power))
3138 (*sym_hash)->root.u.c.p->alignment_power =
3139 bfd_get_arch_info (abfd)->section_align_power;
3140
3141 /* If this is a set symbol, and we are not building sets, then
3142 it is possible for the hash entry to not have been set. In
3143 such a case, treat the symbol as not globally defined. */
3144 if ((*sym_hash)->root.type == bfd_link_hash_new)
3145 {
3146 BFD_ASSERT ((flags & BSF_CONSTRUCTOR) != 0);
3147 *sym_hash = NULL;
3148 }
3149
3150 if (type == (N_INDR | N_EXT) || type == N_WARNING)
3151 ++sym_hash;
3152 }
3153
b34976b6 3154 return TRUE;
252b5132 3155}
252b5132 3156
116c20d2
NC		 3157/* Free up the internal symbols read from an a.out file. */
3158
3159static bfd_boolean
3160aout_link_free_symbols (bfd *abfd)
252b5132 3161{
116c20d2
NC		 3162 if (obj_aout_external_syms (abfd) != NULL)
3163 {
3164#ifdef USE_MMAP
3165 bfd_free_window (&obj_aout_sym_window (abfd));
3166#else
3167 free ((void *) obj_aout_external_syms (abfd));
3168#endif
3169 obj_aout_external_syms (abfd) = NULL;
3170 }
3171 if (obj_aout_external_strings (abfd) != NULL)
3172 {
3173#ifdef USE_MMAP
3174 bfd_free_window (&obj_aout_string_window (abfd));
3175#else
3176 free ((void *) obj_aout_external_strings (abfd));
3177#endif
3178 obj_aout_external_strings (abfd) = NULL;
3179 }
3180 return TRUE;
3181}
252b5132 3182
116c20d2 3183/* Add symbols from an a.out object file. */
252b5132 3184
116c20d2
NC		 3185static bfd_boolean
3186aout_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info)
252b5132 3187{
116c20d2
NC		 3188 if (! aout_get_external_symbols (abfd))
3189 return FALSE;
3190 if (! aout_link_add_symbols (abfd, info))
3191 return FALSE;
3192 if (! info->keep_memory)
3193 {
3194 if (! aout_link_free_symbols (abfd))
3195 return FALSE;
3196 }
3197 return TRUE;
3198}
252b5132 3199
116c20d2
NC		 3200/* Look through the internal symbols to see if this object file should
3201 be included in the link. We should include this object file if it
3202 defines any symbols which are currently undefined. If this object
3203 file defines a common symbol, then we may adjust the size of the
3204 known symbol but we do not include the object file in the link
3205 (unless there is some other reason to include it). */
252b5132 3206
116c20d2
NC		 3207static bfd_boolean
3208aout_link_check_ar_symbols (bfd *abfd,
3209 struct bfd_link_info *info,
5d3236ee
DK		 3210 bfd_boolean *pneeded,
3211 bfd **subsbfd)
252b5132 3212{
116c20d2
NC		 3213 struct external_nlist *p;
3214 struct external_nlist *pend;
3215 char *strings;
252b5132 3216
116c20d2 3217 *pneeded = FALSE;
252b5132 3218
116c20d2
NC		 3219 /* Look through all the symbols. */
3220 p = obj_aout_external_syms (abfd);
3221 pend = p + obj_aout_external_sym_count (abfd);
3222 strings = obj_aout_external_strings (abfd);
3223 for (; p < pend; p++)
3224 {
3225 int type = H_GET_8 (abfd, p->e_type);
3226 const char *name;
3227 struct bfd_link_hash_entry *h;
252b5132 3228
116c20d2
NC		 3229 /* Ignore symbols that are not externally visible. This is an
3230 optimization only, as we check the type more thoroughly
3231 below. */
3232 if (((type & N_EXT) == 0
3233 || (type & N_STAB) != 0
3234 || type == N_FN)
3235 && type != N_WEAKA
3236 && type != N_WEAKT
3237 && type != N_WEAKD
3238 && type != N_WEAKB)
3239 {
3240 if (type == N_WARNING
3241 || type == N_INDR)
3242 ++p;
3243 continue;
3244 }
3245
3246 name = strings + GET_WORD (abfd, p->e_strx);
3247 h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE);
3248
3249 /* We are only interested in symbols that are currently
3250 undefined or common. */
3251 if (h == NULL
3252 || (h->type != bfd_link_hash_undefined
3253 && h->type != bfd_link_hash_common))
3254 {
3255 if (type == (N_INDR | N_EXT))
3256 ++p;
3257 continue;
3258 }
3259
3260 if (type == (N_TEXT | N_EXT)
3261 || type == (N_DATA | N_EXT)
3262 || type == (N_BSS | N_EXT)
3263 || type == (N_ABS | N_EXT)
3264 || type == (N_INDR | N_EXT))
3265 {
3266 /* This object file defines this symbol. We must link it
3267 in. This is true regardless of whether the current
3268 definition of the symbol is undefined or common.
3269
3270 If the current definition is common, we have a case in
3271 which we have already seen an object file including:
3272 int a;
3273 and this object file from the archive includes:
3274 int a = 5;
3275 In such a case, whether to include this object is target
3276 dependant for backward compatibility.
3277
3278 FIXME: The SunOS 4.1.3 linker will pull in the archive
3279 element if the symbol is defined in the .data section,
3280 but not if it is defined in the .text section. That
3281 seems a bit crazy to me, and it has not been implemented
3282 yet. However, it might be correct. */
3283 if (h->type == bfd_link_hash_common)
3284 {
3285 int skip = 0;
3286
f88dc410 3287 switch (info->common_skip_ar_symbols)
116c20d2
NC		 3288 {
3289 case bfd_link_common_skip_text:
3290 skip = (type == (N_TEXT | N_EXT));
3291 break;
3292 case bfd_link_common_skip_data:
3293 skip = (type == (N_DATA | N_EXT));
3294 break;
3295 default:
3296 case bfd_link_common_skip_all:
3297 skip = 1;
3298 break;
3299 }
3300
3301 if (skip)
3302 continue;
3303 }
3304
0e144ba7
AM		 3305 if (!(*info->callbacks
3306 ->add_archive_element) (info, abfd, name, subsbfd))
116c20d2
NC		 3307 return FALSE;
3308 *pneeded = TRUE;
3309 return TRUE;
3310 }
3311
3312 if (type == (N_UNDF | N_EXT))
3313 {
3314 bfd_vma value;
3315
3316 value = GET_WORD (abfd, p->e_value);
3317 if (value != 0)
3318 {
3319 /* This symbol is common in the object from the archive
3320 file. */
3321 if (h->type == bfd_link_hash_undefined)
3322 {
3323 bfd *symbfd;
3324 unsigned int power;
3325
3326 symbfd = h->u.undef.abfd;
3327 if (symbfd == NULL)
3328 {
3329 /* This symbol was created as undefined from
3330 outside BFD. We assume that we should link
3331 in the object file. This is done for the -u
3332 option in the linker. */
0e144ba7
AM		 3333 if (!(*info->callbacks
3334 ->add_archive_element) (info, abfd, name, subsbfd))
116c20d2
NC		 3335 return FALSE;
3336 *pneeded = TRUE;
3337 return TRUE;
3338 }
3339 /* Turn the current link symbol into a common
3340 symbol. It is already on the undefs list. */
3341 h->type = bfd_link_hash_common;
a50b1753 3342 h->u.c.p = (struct bfd_link_hash_common_entry *)
0e144ba7
AM		 3343 bfd_hash_allocate (&info->hash->table,
3344 sizeof (struct bfd_link_hash_common_entry));
116c20d2
NC		 3345 if (h->u.c.p == NULL)
3346 return FALSE;
3347
3348 h->u.c.size = value;
3349
3350 /* FIXME: This isn't quite right. The maximum
3351 alignment of a common symbol should be set by the
3352 architecture of the output file, not of the input
3353 file. */
3354 power = bfd_log2 (value);
3355 if (power > bfd_get_arch_info (abfd)->section_align_power)
3356 power = bfd_get_arch_info (abfd)->section_align_power;
3357 h->u.c.p->alignment_power = power;
3358
3359 h->u.c.p->section = bfd_make_section_old_way (symbfd,
3360 "COMMON");
3361 }
3362 else
3363 {
3364 /* Adjust the size of the common symbol if
3365 necessary. */
3366 if (value > h->u.c.size)
3367 h->u.c.size = value;
3368 }
3369 }
3370 }
3371
3372 if (type == N_WEAKA
3373 || type == N_WEAKT
3374 || type == N_WEAKD
3375 || type == N_WEAKB)
3376 {
3377 /* This symbol is weak but defined. We must pull it in if
3378 the current link symbol is undefined, but we don't want
3379 it if the current link symbol is common. */
3380 if (h->type == bfd_link_hash_undefined)
3381 {
0e144ba7
AM		 3382 if (!(*info->callbacks
3383 ->add_archive_element) (info, abfd, name, subsbfd))
116c20d2
NC		 3384 return FALSE;
3385 *pneeded = TRUE;
3386 return TRUE;
3387 }
3388 }
3389 }
3390
3391 /* We do not need this object file. */
3392 return TRUE;
3393}
3394/* Check a single archive element to see if we need to include it in
3395 the link. *PNEEDED is set according to whether this element is
3396 needed in the link or not. This is called from
3397 _bfd_generic_link_add_archive_symbols. */
3398
3399static bfd_boolean
3400aout_link_check_archive_element (bfd *abfd,
3401 struct bfd_link_info *info,
13e570f8
AM		 3402 struct bfd_link_hash_entry *h ATTRIBUTE_UNUSED,
3403 const char *name ATTRIBUTE_UNUSED,
116c20d2
NC		 3404 bfd_boolean *pneeded)
3405{
0e144ba7
AM		 3406 bfd *oldbfd;
3407 bfd_boolean needed;
5d3236ee 3408
0e144ba7 3409 if (!aout_get_external_symbols (abfd))
116c20d2
NC		 3410 return FALSE;
3411
0e144ba7
AM		 3412 oldbfd = abfd;
3413 if (!aout_link_check_ar_symbols (abfd, info, pneeded, &abfd))
116c20d2
NC		 3414 return FALSE;
3415
0e144ba7
AM		 3416 needed = *pneeded;
3417 if (needed)
116c20d2 3418 {
5d3236ee
DK		 3419 /* Potentially, the add_archive_element hook may have set a
3420 substitute BFD for us. */
0e144ba7
AM		 3421 if (abfd != oldbfd)
3422 {
3423 if (!info->keep_memory
3424 && !aout_link_free_symbols (oldbfd))
3425 return FALSE;
3426 if (!aout_get_external_symbols (abfd))
3427 return FALSE;
3428 }
3429 if (!aout_link_add_symbols (abfd, info))
116c20d2
NC		 3430 return FALSE;
3431 }
3432
0e144ba7 3433 if (!info->keep_memory || !needed)
116c20d2 3434 {
0e144ba7 3435 if (!aout_link_free_symbols (abfd))
116c20d2
NC		 3436 return FALSE;
3437 }
3438
3439 return TRUE;
3440}
3441
3442/* Given an a.out BFD, add symbols to the global hash table as
3443 appropriate. */
3444
3445bfd_boolean
3446NAME (aout, link_add_symbols) (bfd *abfd, struct bfd_link_info *info)
3447{
3448 switch (bfd_get_format (abfd))
3449 {
3450 case bfd_object:
3451 return aout_link_add_object_symbols (abfd, info);
3452 case bfd_archive:
3453 return _bfd_generic_link_add_archive_symbols
3454 (abfd, info, aout_link_check_archive_element);
3455 default:
3456 bfd_set_error (bfd_error_wrong_format);
3457 return FALSE;
3458 }
3459}
3460\f
3461/* A hash table used for header files with N_BINCL entries. */
3462
3463struct aout_link_includes_table
3464{
3465 struct bfd_hash_table root;
3466};
3467
3468/* A linked list of totals that we have found for a particular header
3469 file. */
3470
3471struct aout_link_includes_totals
3472{
3473 struct aout_link_includes_totals *next;
3474 bfd_vma total;
3475};
3476
3477/* An entry in the header file hash table. */
3478
3479struct aout_link_includes_entry
3480{
3481 struct bfd_hash_entry root;
3482 /* List of totals we have found for this file. */
3483 struct aout_link_includes_totals *totals;
3484};
3485
3486/* Look up an entry in an the header file hash table. */
3487
3488#define aout_link_includes_lookup(table, string, create, copy) \
3489 ((struct aout_link_includes_entry *) \
3490 bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
3491
3492/* During the final link step we need to pass around a bunch of
3493 information, so we do it in an instance of this structure. */
3494
3495struct aout_final_link_info
3496{
3497 /* General link information. */
3498 struct bfd_link_info *info;
3499 /* Output bfd. */
252b5132
RH		 3500 bfd *output_bfd;
3501 /* Reloc file positions. */
3502 file_ptr treloff, dreloff;
3503 /* File position of symbols. */
3504 file_ptr symoff;
3505 /* String table. */
3506 struct bfd_strtab_hash *strtab;
3507 /* Header file hash table. */
3508 struct aout_link_includes_table includes;
3509 /* A buffer large enough to hold the contents of any section. */
3510 bfd_byte *contents;
3511 /* A buffer large enough to hold the relocs of any section. */
116c20d2 3512 void * relocs;
252b5132
RH		 3513 /* A buffer large enough to hold the symbol map of any input BFD. */
3514 int *symbol_map;
3515 /* A buffer large enough to hold output symbols of any input BFD. */
3516 struct external_nlist *output_syms;
3517};
3518
252b5132
RH		 3519/* The function to create a new entry in the header file hash table. */
3520
3521static struct bfd_hash_entry *
116c20d2
NC		 3522aout_link_includes_newfunc (struct bfd_hash_entry *entry,
3523 struct bfd_hash_table *table,
3524 const char *string)
252b5132
RH		 3525{
3526 struct aout_link_includes_entry *ret =
3527 (struct aout_link_includes_entry *) entry;
3528
3529 /* Allocate the structure if it has not already been allocated by a
3530 subclass. */
116c20d2 3531 if (ret == NULL)
a50b1753
NC		 3532 ret = (struct aout_link_includes_entry *)
3533 bfd_hash_allocate (table, sizeof (* ret));
116c20d2
NC		 3534 if (ret == NULL)
3535 return NULL;
252b5132
RH		 3536
3537 /* Call the allocation method of the superclass. */
3538 ret = ((struct aout_link_includes_entry *)
3539 bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string));
3540 if (ret)
3541 {
3542 /* Set local fields. */
3543 ret->totals = NULL;
3544 }
3545
3546 return (struct bfd_hash_entry *) ret;
3547}
3548
116c20d2
NC		 3549/* Write out a symbol that was not associated with an a.out input
3550 object. */
252b5132 3551
116c20d2 3552static bfd_boolean
7686d77d 3553aout_link_write_other_symbol (struct bfd_hash_entry *bh, void *data)
252b5132 3554{
7686d77d 3555 struct aout_link_hash_entry *h = (struct aout_link_hash_entry *) bh;
57402f1e 3556 struct aout_final_link_info *flaginfo = (struct aout_final_link_info *) data;
116c20d2
NC		 3557 bfd *output_bfd;
3558 int type;
3559 bfd_vma val;
3560 struct external_nlist outsym;
3561 bfd_size_type indx;
3562 bfd_size_type amt;
252b5132 3563
116c20d2
NC		 3564 if (h->root.type == bfd_link_hash_warning)
3565 {
3566 h = (struct aout_link_hash_entry *) h->root.u.i.link;
3567 if (h->root.type == bfd_link_hash_new)
3568 return TRUE;
3569 }
252b5132 3570
57402f1e 3571 output_bfd = flaginfo->output_bfd;
252b5132 3572
116c20d2 3573 if (aout_backend_info (output_bfd)->write_dynamic_symbol != NULL)
252b5132 3574 {
116c20d2 3575 if (! ((*aout_backend_info (output_bfd)->write_dynamic_symbol)
57402f1e 3576 (output_bfd, flaginfo->info, h)))
252b5132 3577 {
116c20d2
NC		 3578 /* FIXME: No way to handle errors. */
3579 abort ();
252b5132 3580 }
116c20d2 3581 }
252b5132 3582
116c20d2
NC		 3583 if (h->written)
3584 return TRUE;
252b5132 3585
116c20d2 3586 h->written = TRUE;
252b5132 3587
116c20d2
NC		 3588 /* An indx of -2 means the symbol must be written. */
3589 if (h->indx != -2
57402f1e
NC		 3590 && (flaginfo->info->strip == strip_all
3591 || (flaginfo->info->strip == strip_some
3592 && bfd_hash_lookup (flaginfo->info->keep_hash, h->root.root.string,
116c20d2
NC		 3593 FALSE, FALSE) == NULL)))
3594 return TRUE;
252b5132 3595
116c20d2 3596 switch (h->root.type)
252b5132 3597 {
116c20d2
NC		 3598 default:
3599 case bfd_link_hash_warning:
3600 abort ();
3601 /* Avoid variable not initialized warnings. */
3602 return TRUE;
3603 case bfd_link_hash_new:
3604 /* This can happen for set symbols when sets are not being
3605 built. */
3606 return TRUE;
3607 case bfd_link_hash_undefined:
3608 type = N_UNDF | N_EXT;
3609 val = 0;
3610 break;
3611 case bfd_link_hash_defined:
3612 case bfd_link_hash_defweak:
3613 {
3614 asection *sec;
252b5132 3615
116c20d2
NC		 3616 sec = h->root.u.def.section->output_section;
3617 BFD_ASSERT (bfd_is_abs_section (sec)
3618 || sec->owner == output_bfd);
3619 if (sec == obj_textsec (output_bfd))
3620 type = h->root.type == bfd_link_hash_defined ? N_TEXT : N_WEAKT;
3621 else if (sec == obj_datasec (output_bfd))
3622 type = h->root.type == bfd_link_hash_defined ? N_DATA : N_WEAKD;
3623 else if (sec == obj_bsssec (output_bfd))
3624 type = h->root.type == bfd_link_hash_defined ? N_BSS : N_WEAKB;
3625 else
3626 type = h->root.type == bfd_link_hash_defined ? N_ABS : N_WEAKA;
3627 type |= N_EXT;
3628 val = (h->root.u.def.value
3629 + sec->vma
3630 + h->root.u.def.section->output_offset);
3631 }
3632 break;
3633 case bfd_link_hash_common:
3634 type = N_UNDF | N_EXT;
3635 val = h->root.u.c.size;
3636 break;
3637 case bfd_link_hash_undefweak:
3638 type = N_WEAKU;
3639 val = 0;
c38eb2a6 3640 break;
116c20d2
NC		 3641 case bfd_link_hash_indirect:
3642 /* We ignore these symbols, since the indirected symbol is
3643 already in the hash table. */
3644 return TRUE;
3645 }
252b5132 3646
116c20d2
NC		 3647 H_PUT_8 (output_bfd, type, outsym.e_type);
3648 H_PUT_8 (output_bfd, 0, outsym.e_other);
3649 H_PUT_16 (output_bfd, 0, outsym.e_desc);
57402f1e 3650 indx = add_to_stringtab (output_bfd, flaginfo->strtab, h->root.root.string,
116c20d2
NC		 3651 FALSE);
3652 if (indx == - (bfd_size_type) 1)
3653 /* FIXME: No way to handle errors. */
3654 abort ();
252b5132 3655
116c20d2
NC		 3656 PUT_WORD (output_bfd, indx, outsym.e_strx);
3657 PUT_WORD (output_bfd, val, outsym.e_value);
252b5132 3658
116c20d2 3659 amt = EXTERNAL_NLIST_SIZE;
57402f1e 3660 if (bfd_seek (output_bfd, flaginfo->symoff, SEEK_SET) != 0
116c20d2
NC		 3661 || bfd_bwrite ((void *) &outsym, amt, output_bfd) != amt)
3662 /* FIXME: No way to handle errors. */
3663 abort ();
252b5132 3664
57402f1e 3665 flaginfo->symoff += EXTERNAL_NLIST_SIZE;
116c20d2
NC		 3666 h->indx = obj_aout_external_sym_count (output_bfd);
3667 ++obj_aout_external_sym_count (output_bfd);
252b5132 3668
116c20d2
NC		 3669 return TRUE;
3670}
252b5132 3671
116c20d2 3672/* Handle a link order which is supposed to generate a reloc. */
252b5132 3673
116c20d2 3674static bfd_boolean
57402f1e 3675aout_link_reloc_link_order (struct aout_final_link_info *flaginfo,
116c20d2
NC		 3676 asection *o,
3677 struct bfd_link_order *p)
3678{
3679 struct bfd_link_order_reloc *pr;
3680 int r_index;
3681 int r_extern;
3682 reloc_howto_type *howto;
3683 file_ptr *reloff_ptr = NULL;
3684 struct reloc_std_external srel;
3685 struct reloc_ext_external erel;
3686 void * rel_ptr;
3687 bfd_size_type amt;
252b5132 3688
116c20d2 3689 pr = p->u.reloc.p;
252b5132 3690
116c20d2
NC		 3691 if (p->type == bfd_section_reloc_link_order)
3692 {
3693 r_extern = 0;
3694 if (bfd_is_abs_section (pr->u.section))
3695 r_index = N_ABS | N_EXT;
3696 else
3697 {
57402f1e 3698 BFD_ASSERT (pr->u.section->owner == flaginfo->output_bfd);
116c20d2
NC		 3699 r_index = pr->u.section->target_index;
3700 }
3701 }
3702 else
3703 {
3704 struct aout_link_hash_entry *h;
252b5132 3705
116c20d2
NC		 3706 BFD_ASSERT (p->type == bfd_symbol_reloc_link_order);
3707 r_extern = 1;
3708 h = ((struct aout_link_hash_entry *)
57402f1e 3709 bfd_wrapped_link_hash_lookup (flaginfo->output_bfd, flaginfo->info,
116c20d2
NC		 3710 pr->u.name, FALSE, FALSE, TRUE));
3711 if (h != NULL
3712 && h->indx >= 0)
3713 r_index = h->indx;
3714 else if (h != NULL)
3715 {
3716 /* We decided to strip this symbol, but it turns out that we
3717 can't. Note that we lose the other and desc information
3718 here. I don't think that will ever matter for a global
3719 symbol. */
3720 h->indx = -2;
3721 h->written = FALSE;
57402f1e 3722 if (!aout_link_write_other_symbol (&h->root.root, flaginfo))
116c20d2
NC		 3723 return FALSE;
3724 r_index = h->indx;
3725 }
3726 else
3727 {
57402f1e
NC		 3728 if (! ((*flaginfo->info->callbacks->unattached_reloc)
3729 (flaginfo->info, pr->u.name, NULL, NULL, (bfd_vma) 0)))
116c20d2
NC		 3730 return FALSE;
3731 r_index = 0;
3732 }
3733 }
252b5132 3734
57402f1e 3735 howto = bfd_reloc_type_lookup (flaginfo->output_bfd, pr->reloc);
116c20d2 3736 if (howto == 0)
252b5132 3737 {
116c20d2
NC		 3738 bfd_set_error (bfd_error_bad_value);
3739 return FALSE;
252b5132
RH		 3740 }
3741
57402f1e
NC		 3742 if (o == obj_textsec (flaginfo->output_bfd))
3743 reloff_ptr = &flaginfo->treloff;
3744 else if (o == obj_datasec (flaginfo->output_bfd))
3745 reloff_ptr = &flaginfo->dreloff;
116c20d2
NC		 3746 else
3747 abort ();
3748
57402f1e 3749 if (obj_reloc_entry_size (flaginfo->output_bfd) == RELOC_STD_SIZE)
252b5132 3750 {
116c20d2 3751#ifdef MY_put_reloc
57402f1e 3752 MY_put_reloc (flaginfo->output_bfd, r_extern, r_index, p->offset, howto,
116c20d2
NC		 3753 &srel);
3754#else
3755 {
3756 int r_pcrel;
3757 int r_baserel;
3758 int r_jmptable;
3759 int r_relative;
3760 int r_length;
252b5132 3761
116c20d2
NC		 3762 r_pcrel = (int) howto->pc_relative;
3763 r_baserel = (howto->type & 8) != 0;
3764 r_jmptable = (howto->type & 16) != 0;
3765 r_relative = (howto->type & 32) != 0;
3766 r_length = howto->size;
252b5132 3767
57402f1e
NC		 3768 PUT_WORD (flaginfo->output_bfd, p->offset, srel.r_address);
3769 if (bfd_header_big_endian (flaginfo->output_bfd))
116c20d2
NC		 3770 {
3771 srel.r_index[0] = r_index >> 16;
3772 srel.r_index[1] = r_index >> 8;
3773 srel.r_index[2] = r_index;
3774 srel.r_type[0] =
3775 ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0)
3776 | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0)
3777 | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0)
3778 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0)
3779 | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0)
3780 | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG));
3781 }
3782 else
3783 {
3784 srel.r_index[2] = r_index >> 16;
3785 srel.r_index[1] = r_index >> 8;
3786 srel.r_index[0] = r_index;
3787 srel.r_type[0] =
3788 ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0)
3789 | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0)
3790 | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0)
3791 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0)
3792 | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0)
3793 | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE));
3794 }
3795 }
3796#endif
3797 rel_ptr = (void *) &srel;
252b5132 3798
116c20d2
NC		 3799 /* We have to write the addend into the object file, since
3800 standard a.out relocs are in place. It would be more
3801 reliable if we had the current contents of the file here,
3802 rather than assuming zeroes, but we can't read the file since
3803 it was opened using bfd_openw. */
3804 if (pr->addend != 0)
252b5132 3805 {
116c20d2
NC		 3806 bfd_size_type size;
3807 bfd_reloc_status_type r;
3808 bfd_byte *buf;
3809 bfd_boolean ok;
3810
3811 size = bfd_get_reloc_size (howto);
a50b1753 3812 buf = (bfd_byte *) bfd_zmalloc (size);
6346d5ca 3813 if (buf == NULL && size != 0)
116c20d2 3814 return FALSE;
57402f1e 3815 r = MY_relocate_contents (howto, flaginfo->output_bfd,
116c20d2
NC		 3816 (bfd_vma) pr->addend, buf);
3817 switch (r)
252b5132 3818 {
116c20d2
NC		 3819 case bfd_reloc_ok:
3820 break;
3821 default:
3822 case bfd_reloc_outofrange:
3823 abort ();
3824 case bfd_reloc_overflow:
57402f1e
NC		 3825 if (! ((*flaginfo->info->callbacks->reloc_overflow)
3826 (flaginfo->info, NULL,
116c20d2 3827 (p->type == bfd_section_reloc_link_order
57402f1e 3828 ? bfd_section_name (flaginfo->output_bfd,
116c20d2
NC		 3829 pr->u.section)
3830 : pr->u.name),
3831 howto->name, pr->addend, NULL, NULL, (bfd_vma) 0)))
252b5132 3832 {
116c20d2
NC		 3833 free (buf);
3834 return FALSE;
252b5132 3835 }
116c20d2 3836 break;
252b5132 3837 }
57402f1e 3838 ok = bfd_set_section_contents (flaginfo->output_bfd, o, (void *) buf,
116c20d2
NC		 3839 (file_ptr) p->offset, size);
3840 free (buf);
3841 if (! ok)
3842 return FALSE;
252b5132
RH		 3843 }
3844 }
116c20d2 3845 else
252b5132 3846 {
116c20d2 3847#ifdef MY_put_ext_reloc
57402f1e 3848 MY_put_ext_reloc (flaginfo->output_bfd, r_extern, r_index, p->offset,
116c20d2
NC		 3849 howto, &erel, pr->addend);
3850#else
57402f1e 3851 PUT_WORD (flaginfo->output_bfd, p->offset, erel.r_address);
252b5132 3852
57402f1e 3853 if (bfd_header_big_endian (flaginfo->output_bfd))
116c20d2
NC		 3854 {
3855 erel.r_index[0] = r_index >> 16;
3856 erel.r_index[1] = r_index >> 8;
3857 erel.r_index[2] = r_index;
3858 erel.r_type[0] =
3859 ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0)
3860 | (howto->type << RELOC_EXT_BITS_TYPE_SH_BIG));
3861 }
3862 else
3863 {
3864 erel.r_index[2] = r_index >> 16;
3865 erel.r_index[1] = r_index >> 8;
3866 erel.r_index[0] = r_index;
3867 erel.r_type[0] =
3868 (r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0)
3869 | (howto->type << RELOC_EXT_BITS_TYPE_SH_LITTLE);
3870 }
252b5132 3871
57402f1e 3872 PUT_WORD (flaginfo->output_bfd, (bfd_vma) pr->addend, erel.r_addend);
116c20d2 3873#endif /* MY_put_ext_reloc */
252b5132 3874
116c20d2 3875 rel_ptr = (void *) &erel;
252b5132 3876 }
252b5132 3877
57402f1e
NC		 3878 amt = obj_reloc_entry_size (flaginfo->output_bfd);
3879 if (bfd_seek (flaginfo->output_bfd, *reloff_ptr, SEEK_SET) != 0
3880 || bfd_bwrite (rel_ptr, amt, flaginfo->output_bfd) != amt)
116c20d2 3881 return FALSE;
252b5132 3882
57402f1e 3883 *reloff_ptr += obj_reloc_entry_size (flaginfo->output_bfd);
252b5132 3884
116c20d2
NC		 3885 /* Assert that the relocs have not run into the symbols, and that n
3886 the text relocs have not run into the data relocs. */
57402f1e
NC		 3887 BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (flaginfo->output_bfd)
3888 && (reloff_ptr != &flaginfo->treloff
116c20d2 3889 || (*reloff_ptr
57402f1e 3890 <= obj_datasec (flaginfo->output_bfd)->rel_filepos)));
116c20d2
NC		 3891
3892 return TRUE;
252b5132
RH		 3893}
3894
116c20d2 3895/* Get the section corresponding to a reloc index. */
252b5132 3896
116c20d2
NC		 3897static INLINE asection *
3898aout_reloc_index_to_section (bfd *abfd, int indx)
252b5132 3899{
116c20d2 3900 switch (indx & N_TYPE)
252b5132 3901 {
116c20d2
NC		 3902 case N_TEXT: return obj_textsec (abfd);
3903 case N_DATA: return obj_datasec (abfd);
3904 case N_BSS: return obj_bsssec (abfd);
3905 case N_ABS:
3906 case N_UNDF: return bfd_abs_section_ptr;
3907 default: abort ();
252b5132 3908 }
116c20d2 3909 return NULL;
252b5132
RH		 3910}
3911
116c20d2 3912/* Relocate an a.out section using standard a.out relocs. */
252b5132 3913
b34976b6 3914static bfd_boolean
57402f1e 3915aout_link_input_section_std (struct aout_final_link_info *flaginfo,
116c20d2
NC		 3916 bfd *input_bfd,
3917 asection *input_section,
3918 struct reloc_std_external *relocs,
3919 bfd_size_type rel_size,
3920 bfd_byte *contents)
252b5132 3921{
116c20d2
NC		 3922 bfd_boolean (*check_dynamic_reloc)
3923 (struct bfd_link_info *, bfd *, asection *,
3924 struct aout_link_hash_entry *, void *, bfd_byte *, bfd_boolean *,
3925 bfd_vma *);
252b5132 3926 bfd *output_bfd;
116c20d2
NC		 3927 bfd_boolean relocatable;
3928 struct external_nlist *syms;
252b5132 3929 char *strings;
116c20d2 3930 struct aout_link_hash_entry **sym_hashes;
252b5132 3931 int *symbol_map;
116c20d2
NC		 3932 bfd_size_type reloc_count;
3933 struct reloc_std_external *rel;
3934 struct reloc_std_external *rel_end;
252b5132 3935
57402f1e 3936 output_bfd = flaginfo->output_bfd;
116c20d2 3937 check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc;
252b5132 3938
116c20d2
NC		 3939 BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE);
3940 BFD_ASSERT (input_bfd->xvec->header_byteorder
3941 == output_bfd->xvec->header_byteorder);
252b5132 3942
0e1862bb 3943 relocatable = bfd_link_relocatable (flaginfo->info);
116c20d2
NC		 3944 syms = obj_aout_external_syms (input_bfd);
3945 strings = obj_aout_external_strings (input_bfd);
3946 sym_hashes = obj_aout_sym_hashes (input_bfd);
57402f1e 3947 symbol_map = flaginfo->symbol_map;
116c20d2
NC		 3948
3949 reloc_count = rel_size / RELOC_STD_SIZE;
3950 rel = relocs;
3951 rel_end = rel + reloc_count;
3952 for (; rel < rel_end; rel++)
252b5132 3953 {
116c20d2
NC		 3954 bfd_vma r_addr;
3955 int r_index;
3956 int r_extern;
3957 int r_pcrel;
3958 int r_baserel = 0;
3959 reloc_howto_type *howto;
3960 struct aout_link_hash_entry *h = NULL;
3961 bfd_vma relocation;
3962 bfd_reloc_status_type r;
252b5132 3963
116c20d2 3964 r_addr = GET_SWORD (input_bfd, rel->r_address);
252b5132 3965
116c20d2
NC		 3966#ifdef MY_reloc_howto
3967 howto = MY_reloc_howto (input_bfd, rel, r_index, r_extern, r_pcrel);
3968#else
3969 {
3970 int r_jmptable;
3971 int r_relative;
3972 int r_length;
3973 unsigned int howto_idx;
252b5132 3974
116c20d2
NC		 3975 if (bfd_header_big_endian (input_bfd))
3976 {
3977 r_index = (((unsigned int) rel->r_index[0] << 16)
3978 | ((unsigned int) rel->r_index[1] << 8)
3979 | rel->r_index[2]);
3980 r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
3981 r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
3982 r_baserel = (0 != (rel->r_type[0] & RELOC_STD_BITS_BASEREL_BIG));
3983 r_jmptable= (0 != (rel->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG));
3984 r_relative= (0 != (rel->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG));
3985 r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_BIG)
3986 >> RELOC_STD_BITS_LENGTH_SH_BIG);
3987 }
3988 else
3989 {
3990 r_index = (((unsigned int) rel->r_index[2] << 16)
3991 | ((unsigned int) rel->r_index[1] << 8)
3992 | rel->r_index[0]);
3993 r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
3994 r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
3995 r_baserel = (0 != (rel->r_type[0]
3996 & RELOC_STD_BITS_BASEREL_LITTLE));
3997 r_jmptable= (0 != (rel->r_type[0]
3998 & RELOC_STD_BITS_JMPTABLE_LITTLE));
3999 r_relative= (0 != (rel->r_type[0]
4000 & RELOC_STD_BITS_RELATIVE_LITTLE));
4001 r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE)
4002 >> RELOC_STD_BITS_LENGTH_SH_LITTLE);
4003 }
252b5132 4004
116c20d2
NC		 4005 howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel
4006 + 16 * r_jmptable + 32 * r_relative);
ad756e3f
AM		 4007 if (howto_idx < TABLE_SIZE (howto_table_std))
4008 howto = howto_table_std + howto_idx;
4009 else
4010 howto = NULL;
116c20d2
NC		 4011 }
4012#endif
252b5132 4013
ad756e3f
AM		 4014 if (howto == NULL)
4015 {
57402f1e 4016 (*flaginfo->info->callbacks->einfo)
ad756e3f
AM		 4017 (_("%P: %B: unexpected relocation type\n"), input_bfd);
4018 bfd_set_error (bfd_error_bad_value);
4019 return FALSE;
4020 }
4021
116c20d2 4022 if (relocatable)
252b5132 4023 {
116c20d2
NC		 4024 /* We are generating a relocatable output file, and must
4025 modify the reloc accordingly. */
4026 if (r_extern)
252b5132 4027 {
116c20d2
NC		 4028 /* If we know the symbol this relocation is against,
4029 convert it into a relocation against a section. This
4030 is what the native linker does. */
4031 h = sym_hashes[r_index];
4032 if (h != NULL
4033 && (h->root.type == bfd_link_hash_defined
4034 || h->root.type == bfd_link_hash_defweak))
252b5132 4035 {
252b5132
RH		 4036 asection *output_section;
4037
116c20d2
NC		 4038 /* Change the r_extern value. */
4039 if (bfd_header_big_endian (output_bfd))
4040 rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_BIG;
4041 else
4042 rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_LITTLE;
252b5132 4043
116c20d2
NC		 4044 /* Compute a new r_index. */
4045 output_section = h->root.u.def.section->output_section;
252b5132 4046 if (output_section == obj_textsec (output_bfd))
116c20d2 4047 r_index = N_TEXT;
252b5132 4048 else if (output_section == obj_datasec (output_bfd))
116c20d2 4049 r_index = N_DATA;
252b5132 4050 else if (output_section == obj_bsssec (output_bfd))
116c20d2 4051 r_index = N_BSS;
252b5132 4052 else
116c20d2 4053 r_index = N_ABS;
252b5132 4054
116c20d2
NC		 4055 /* Add the symbol value and the section VMA to the
4056 addend stored in the contents. */
4057 relocation = (h->root.u.def.value
4058 + output_section->vma
4059 + h->root.u.def.section->output_offset);
252b5132 4060 }
116c20d2 4061 else
252b5132 4062 {
116c20d2
NC		 4063 /* We must change r_index according to the symbol
4064 map. */
4065 r_index = symbol_map[r_index];
252b5132 4066
116c20d2 4067 if (r_index == -1)
252b5132 4068 {
116c20d2 4069 if (h != NULL)
252b5132 4070 {
116c20d2
NC		 4071 /* We decided to strip this symbol, but it
4072 turns out that we can't. Note that we
4073 lose the other and desc information here.
4074 I don't think that will ever matter for a
4075 global symbol. */
4076 if (h->indx < 0)
252b5132 4077 {
116c20d2
NC		 4078 h->indx = -2;
4079 h->written = FALSE;
7686d77d 4080 if (!aout_link_write_other_symbol (&h->root.root,
57402f1e 4081 flaginfo))
116c20d2 4082 return FALSE;
252b5132 4083 }
116c20d2
NC		 4084 r_index = h->indx;
4085 }
4086 else
4087 {
4088 const char *name;
4089
4090 name = strings + GET_WORD (input_bfd,
4091 syms[r_index].e_strx);
57402f1e
NC		 4092 if (! ((*flaginfo->info->callbacks->unattached_reloc)
4093 (flaginfo->info, name, input_bfd, input_section,
116c20d2
NC		 4094 r_addr)))
4095 return FALSE;
4096 r_index = 0;
252b5132
RH		 4097 }
4098 }
116c20d2
NC		 4099
4100 relocation = 0;
252b5132
RH		 4101 }
4102
116c20d2
NC		 4103 /* Write out the new r_index value. */
4104 if (bfd_header_big_endian (output_bfd))
252b5132 4105 {
116c20d2
NC		 4106 rel->r_index[0] = r_index >> 16;
4107 rel->r_index[1] = r_index >> 8;
4108 rel->r_index[2] = r_index;
252b5132
RH		 4109 }
4110 else
4111 {
116c20d2
NC		 4112 rel->r_index[2] = r_index >> 16;
4113 rel->r_index[1] = r_index >> 8;
4114 rel->r_index[0] = r_index;
252b5132
RH		 4115 }
4116 }
252b5132 4117 else
116c20d2
NC		 4118 {
4119 asection *section;
252b5132 4120
116c20d2
NC		 4121 /* This is a relocation against a section. We must
4122 adjust by the amount that the section moved. */
4123 section = aout_reloc_index_to_section (input_bfd, r_index);
4124 relocation = (section->output_section->vma
4125 + section->output_offset
4126 - section->vma);
4127 }
252b5132 4128
116c20d2
NC		 4129 /* Change the address of the relocation. */
4130 PUT_WORD (output_bfd,
4131 r_addr + input_section->output_offset,
4132 rel->r_address);
252b5132 4133
116c20d2
NC		 4134 /* Adjust a PC relative relocation by removing the reference
4135 to the original address in the section and including the
4136 reference to the new address. */
4137 if (r_pcrel)
4138 relocation -= (input_section->output_section->vma
4139 + input_section->output_offset
4140 - input_section->vma);
e92d460e 4141
116c20d2
NC		 4142#ifdef MY_relocatable_reloc
4143 MY_relocatable_reloc (howto, output_bfd, rel, relocation, r_addr);
4144#endif
252b5132 4145
116c20d2
NC		 4146 if (relocation == 0)
4147 r = bfd_reloc_ok;
4148 else
4149 r = MY_relocate_contents (howto,
4150 input_bfd, relocation,
4151 contents + r_addr);
252b5132 4152 }
116c20d2
NC		 4153 else
4154 {
4155 bfd_boolean hundef;
252b5132 4156
116c20d2
NC		 4157 /* We are generating an executable, and must do a full
4158 relocation. */
4159 hundef = FALSE;
252b5132 4160
116c20d2
NC		 4161 if (r_extern)
4162 {
4163 h = sym_hashes[r_index];
252b5132 4164
116c20d2
NC		 4165 if (h != NULL
4166 && (h->root.type == bfd_link_hash_defined
4167 || h->root.type == bfd_link_hash_defweak))
4168 {
4169 relocation = (h->root.u.def.value
4170 + h->root.u.def.section->output_section->vma
4171 + h->root.u.def.section->output_offset);
4172 }
4173 else if (h != NULL
4174 && h->root.type == bfd_link_hash_undefweak)
4175 relocation = 0;
4176 else
4177 {
4178 hundef = TRUE;
4179 relocation = 0;
4180 }
4181 }
4182 else
4183 {
4184 asection *section;
252b5132 4185
116c20d2
NC		 4186 section = aout_reloc_index_to_section (input_bfd, r_index);
4187 relocation = (section->output_section->vma
4188 + section->output_offset
4189 - section->vma);
4190 if (r_pcrel)
4191 relocation += input_section->vma;
4192 }
252b5132 4193
116c20d2
NC		 4194 if (check_dynamic_reloc != NULL)
4195 {
4196 bfd_boolean skip;
252b5132 4197
116c20d2 4198 if (! ((*check_dynamic_reloc)
57402f1e 4199 (flaginfo->info, input_bfd, input_section, h,
116c20d2
NC		 4200 (void *) rel, contents, &skip, &relocation)))
4201 return FALSE;
4202 if (skip)
4203 continue;
4204 }
252b5132 4205
116c20d2
NC		 4206 /* Now warn if a global symbol is undefined. We could not
4207 do this earlier, because check_dynamic_reloc might want
4208 to skip this reloc. */
0e1862bb 4209 if (hundef && ! bfd_link_pic (flaginfo->info) && ! r_baserel)
116c20d2
NC		 4210 {
4211 const char *name;
252b5132 4212
116c20d2
NC		 4213 if (h != NULL)
4214 name = h->root.root.string;
4215 else
4216 name = strings + GET_WORD (input_bfd, syms[r_index].e_strx);
57402f1e
NC		 4217 if (! ((*flaginfo->info->callbacks->undefined_symbol)
4218 (flaginfo->info, name, input_bfd, input_section,
116c20d2
NC		 4219 r_addr, TRUE)))
4220 return FALSE;
4221 }
252b5132 4222
116c20d2
NC		 4223 r = MY_final_link_relocate (howto,
4224 input_bfd, input_section,
4225 contents, r_addr, relocation,
4226 (bfd_vma) 0);
252b5132 4227 }
252b5132 4228
116c20d2
NC		 4229 if (r != bfd_reloc_ok)
4230 {
4231 switch (r)
4232 {
4233 default:
4234 case bfd_reloc_outofrange:
4235 abort ();
4236 case bfd_reloc_overflow:
4237 {
4238 const char *name;
252b5132 4239
116c20d2
NC		 4240 if (h != NULL)
4241 name = NULL;
4242 else if (r_extern)
4243 name = strings + GET_WORD (input_bfd,
4244 syms[r_index].e_strx);
4245 else
4246 {
4247 asection *s;
252b5132 4248
116c20d2
NC		 4249 s = aout_reloc_index_to_section (input_bfd, r_index);
4250 name = bfd_section_name (input_bfd, s);
4251 }
57402f1e
NC		 4252 if (! ((*flaginfo->info->callbacks->reloc_overflow)
4253 (flaginfo->info, (h ? &h->root : NULL), name,
116c20d2
NC		 4254 howto->name, (bfd_vma) 0, input_bfd,
4255 input_section, r_addr)))
4256 return FALSE;
4257 }
4258 break;
4259 }
4260 }
252b5132
RH		 4261 }
4262
b34976b6 4263 return TRUE;
252b5132
RH		 4264}
4265
116c20d2 4266/* Relocate an a.out section using extended a.out relocs. */
252b5132 4267
b34976b6 4268static bfd_boolean
57402f1e 4269aout_link_input_section_ext (struct aout_final_link_info *flaginfo,
116c20d2
NC		 4270 bfd *input_bfd,
4271 asection *input_section,
4272 struct reloc_ext_external *relocs,
4273 bfd_size_type rel_size,
4274 bfd_byte *contents)
252b5132 4275{
b34976b6 4276 bfd_boolean (*check_dynamic_reloc)
116c20d2
NC		 4277 (struct bfd_link_info *, bfd *, asection *,
4278 struct aout_link_hash_entry *, void *, bfd_byte *, bfd_boolean *,
4279 bfd_vma *);
252b5132 4280 bfd *output_bfd;
1049f94e 4281 bfd_boolean relocatable;
252b5132
RH		 4282 struct external_nlist *syms;
4283 char *strings;
4284 struct aout_link_hash_entry **sym_hashes;
4285 int *symbol_map;
4286 bfd_size_type reloc_count;
116c20d2
NC		 4287 struct reloc_ext_external *rel;
4288 struct reloc_ext_external *rel_end;
252b5132 4289
57402f1e 4290 output_bfd = flaginfo->output_bfd;
252b5132
RH		 4291 check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc;
4292
116c20d2 4293 BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_EXT_SIZE);
252b5132
RH		 4294 BFD_ASSERT (input_bfd->xvec->header_byteorder
4295 == output_bfd->xvec->header_byteorder);
4296
0e1862bb 4297 relocatable = bfd_link_relocatable (flaginfo->info);
252b5132
RH		 4298 syms = obj_aout_external_syms (input_bfd);
4299 strings = obj_aout_external_strings (input_bfd);
4300 sym_hashes = obj_aout_sym_hashes (input_bfd);
57402f1e 4301 symbol_map = flaginfo->symbol_map;
252b5132 4302
116c20d2 4303 reloc_count = rel_size / RELOC_EXT_SIZE;
252b5132
RH		 4304 rel = relocs;
4305 rel_end = rel + reloc_count;
4306 for (; rel < rel_end; rel++)
4307 {
4308 bfd_vma r_addr;
4309 int r_index;
4310 int r_extern;
116c20d2
NC		 4311 unsigned int r_type;
4312 bfd_vma r_addend;
252b5132 4313 struct aout_link_hash_entry *h = NULL;
116c20d2 4314 asection *r_section = NULL;
252b5132 4315 bfd_vma relocation;
252b5132
RH		 4316
4317 r_addr = GET_SWORD (input_bfd, rel->r_address);
4318
116c20d2
NC		 4319 if (bfd_header_big_endian (input_bfd))
4320 {
4321 r_index = (((unsigned int) rel->r_index[0] << 16)
4322 | ((unsigned int) rel->r_index[1] << 8)
4323 | rel->r_index[2]);
4324 r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG));
4325 r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
4326 >> RELOC_EXT_BITS_TYPE_SH_BIG);
4327 }
4328 else
4329 {
4330 r_index = (((unsigned int) rel->r_index[2] << 16)
4331 | ((unsigned int) rel->r_index[1] << 8)
4332 | rel->r_index[0]);
4333 r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE));
4334 r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
4335 >> RELOC_EXT_BITS_TYPE_SH_LITTLE);
4336 }
252b5132 4337
116c20d2 4338 r_addend = GET_SWORD (input_bfd, rel->r_addend);
252b5132 4339
ad756e3f
AM		 4340 if (r_type >= TABLE_SIZE (howto_table_ext))
4341 {
57402f1e 4342 (*flaginfo->info->callbacks->einfo)
ad756e3f
AM		 4343 (_("%P: %B: unexpected relocation type\n"), input_bfd);
4344 bfd_set_error (bfd_error_bad_value);
4345 return FALSE;
4346 }
252b5132 4347
1049f94e 4348 if (relocatable)
252b5132 4349 {
1049f94e 4350 /* We are generating a relocatable output file, and must
252b5132 4351 modify the reloc accordingly. */
116c20d2
NC		 4352 if (r_extern
4353 || r_type == (unsigned int) RELOC_BASE10
4354 || r_type == (unsigned int) RELOC_BASE13
4355 || r_type == (unsigned int) RELOC_BASE22)
252b5132
RH		 4356 {
4357 /* If we know the symbol this relocation is against,
4358 convert it into a relocation against a section. This
4359 is what the native linker does. */
116c20d2
NC		 4360 if (r_type == (unsigned int) RELOC_BASE10
4361 || r_type == (unsigned int) RELOC_BASE13
4362 || r_type == (unsigned int) RELOC_BASE22)
4363 h = NULL;
4364 else
4365 h = sym_hashes[r_index];
4366 if (h != NULL
252b5132
RH		 4367 && (h->root.type == bfd_link_hash_defined
4368 || h->root.type == bfd_link_hash_defweak))
4369 {
4370 asection *output_section;
4371
4372 /* Change the r_extern value. */
4373 if (bfd_header_big_endian (output_bfd))
116c20d2 4374 rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_BIG;
252b5132 4375 else
116c20d2 4376 rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_LITTLE;
252b5132
RH		 4377
4378 /* Compute a new r_index. */
4379 output_section = h->root.u.def.section->output_section;
4380 if (output_section == obj_textsec (output_bfd))
4381 r_index = N_TEXT;
4382 else if (output_section == obj_datasec (output_bfd))
4383 r_index = N_DATA;
4384 else if (output_section == obj_bsssec (output_bfd))
4385 r_index = N_BSS;
4386 else
4387 r_index = N_ABS;
4388
4389 /* Add the symbol value and the section VMA to the
116c20d2 4390 addend. */
252b5132
RH		 4391 relocation = (h->root.u.def.value
4392 + output_section->vma
4393 + h->root.u.def.section->output_offset);
116c20d2
NC		 4394
4395 /* Now RELOCATION is the VMA of the final
4396 destination. If this is a PC relative reloc,
4397 then ADDEND is the negative of the source VMA.
4398 We want to set ADDEND to the difference between
4399 the destination VMA and the source VMA, which
4400 means we must adjust RELOCATION by the change in
4401 the source VMA. This is done below. */
252b5132
RH		 4402 }
4403 else
4404 {
4405 /* We must change r_index according to the symbol
4406 map. */
4407 r_index = symbol_map[r_index];
4408
4409 if (r_index == -1)
4410 {
4411 if (h != NULL)
4412 {
4413 /* We decided to strip this symbol, but it
4414 turns out that we can't. Note that we
4415 lose the other and desc information here.
4416 I don't think that will ever matter for a
4417 global symbol. */
4418 if (h->indx < 0)
4419 {
4420 h->indx = -2;
b34976b6 4421 h->written = FALSE;
7686d77d 4422 if (!aout_link_write_other_symbol (&h->root.root,
57402f1e 4423 flaginfo))
b34976b6 4424 return FALSE;
252b5132
RH		 4425 }
4426 r_index = h->indx;
4427 }
4428 else
4429 {
4430 const char *name;
4431
4432 name = strings + GET_WORD (input_bfd,
4433 syms[r_index].e_strx);
57402f1e
NC		 4434 if (! ((*flaginfo->info->callbacks->unattached_reloc)
4435 (flaginfo->info, name, input_bfd, input_section,
252b5132 4436 r_addr)))
b34976b6 4437 return FALSE;
252b5132
RH		 4438 r_index = 0;
4439 }
4440 }
4441
4442 relocation = 0;
116c20d2
NC		 4443
4444 /* If this is a PC relative reloc, then the addend
4445 is the negative of the source VMA. We must
4446 adjust it by the change in the source VMA. This
4447 is done below. */
252b5132
RH		 4448 }
4449
4450 /* Write out the new r_index value. */
4451 if (bfd_header_big_endian (output_bfd))
4452 {
4453 rel->r_index[0] = r_index >> 16;
4454 rel->r_index[1] = r_index >> 8;
4455 rel->r_index[2] = r_index;
4456 }
4457 else
4458 {
4459 rel->r_index[2] = r_index >> 16;
4460 rel->r_index[1] = r_index >> 8;
4461 rel->r_index[0] = r_index;
4462 }
4463 }
4464 else
4465 {
252b5132
RH		 4466 /* This is a relocation against a section. We must
4467 adjust by the amount that the section moved. */
116c20d2
NC		 4468 r_section = aout_reloc_index_to_section (input_bfd, r_index);
4469 relocation = (r_section->output_section->vma
4470 + r_section->output_offset
4471 - r_section->vma);
252b5132 4472
116c20d2
NC		 4473 /* If this is a PC relative reloc, then the addend is
4474 the difference in VMA between the destination and the
4475 source. We have just adjusted for the change in VMA
4476 of the destination, so we must also adjust by the
4477 change in VMA of the source. This is done below. */
4478 }
252b5132 4479
116c20d2
NC		 4480 /* As described above, we must always adjust a PC relative
4481 reloc by the change in VMA of the source. However, if
4482 pcrel_offset is set, then the addend does not include the
4483 location within the section, in which case we don't need
4484 to adjust anything. */
4485 if (howto_table_ext[r_type].pc_relative
4486 && ! howto_table_ext[r_type].pcrel_offset)
252b5132
RH		 4487 relocation -= (input_section->output_section->vma
4488 + input_section->output_offset
4489 - input_section->vma);
4490
116c20d2
NC		 4491 /* Change the addend if necessary. */
4492 if (relocation != 0)
4493 PUT_WORD (output_bfd, r_addend + relocation, rel->r_addend);
252b5132 4494
116c20d2
NC		 4495 /* Change the address of the relocation. */
4496 PUT_WORD (output_bfd,
4497 r_addr + input_section->output_offset,
4498 rel->r_address);
252b5132
RH		 4499 }
4500 else
4501 {
b34976b6 4502 bfd_boolean hundef;
116c20d2 4503 bfd_reloc_status_type r;
252b5132
RH		 4504
4505 /* We are generating an executable, and must do a full
4506 relocation. */
b34976b6 4507 hundef = FALSE;
252b5132
RH		 4508
4509 if (r_extern)
4510 {
4511 h = sym_hashes[r_index];
4512
116c20d2 4513 if (h != NULL
252b5132
RH		 4514 && (h->root.type == bfd_link_hash_defined
4515 || h->root.type == bfd_link_hash_defweak))
4516 {
4517 relocation = (h->root.u.def.value
4518 + h->root.u.def.section->output_section->vma
4519 + h->root.u.def.section->output_offset);
4520 }
116c20d2 4521 else if (h != NULL
252b5132
RH		 4522 && h->root.type == bfd_link_hash_undefweak)
4523 relocation = 0;
4524 else
4525 {
b34976b6 4526 hundef = TRUE;
252b5132
RH		 4527 relocation = 0;
4528 }
4529 }
116c20d2
NC		 4530 else if (r_type == (unsigned int) RELOC_BASE10
4531 || r_type == (unsigned int) RELOC_BASE13
4532 || r_type == (unsigned int) RELOC_BASE22)
4533 {
4534 struct external_nlist *sym;
4535 int type;
4536
4537 /* For base relative relocs, r_index is always an index
4538 into the symbol table, even if r_extern is 0. */
4539 sym = syms + r_index;
4540 type = H_GET_8 (input_bfd, sym->e_type);
4541 if ((type & N_TYPE) == N_TEXT
4542 || type == N_WEAKT)
4543 r_section = obj_textsec (input_bfd);
4544 else if ((type & N_TYPE) == N_DATA
4545 || type == N_WEAKD)
4546 r_section = obj_datasec (input_bfd);
4547 else if ((type & N_TYPE) == N_BSS
4548 || type == N_WEAKB)
4549 r_section = obj_bsssec (input_bfd);
4550 else if ((type & N_TYPE) == N_ABS
4551 || type == N_WEAKA)
4552 r_section = bfd_abs_section_ptr;
4553 else
4554 abort ();
4555 relocation = (r_section->output_section->vma
4556 + r_section->output_offset
4557 + (GET_WORD (input_bfd, sym->e_value)
4558 - r_section->vma));
4559 }
252b5132
RH		 4560 else
4561 {
116c20d2 4562 r_section = aout_reloc_index_to_section (input_bfd, r_index);
252b5132 4563
116c20d2
NC		 4564 /* If this is a PC relative reloc, then R_ADDEND is the
4565 difference between the two vmas, or
4566 old_dest_sec + old_dest_off - (old_src_sec + old_src_off)
4567 where
4568 old_dest_sec == section->vma
4569 and
4570 old_src_sec == input_section->vma
4571 and
4572 old_src_off == r_addr
4573
4574 _bfd_final_link_relocate expects RELOCATION +
4575 R_ADDEND to be the VMA of the destination minus
4576 r_addr (the minus r_addr is because this relocation
4577 is not pcrel_offset, which is a bit confusing and
4578 should, perhaps, be changed), or
4579 new_dest_sec
4580 where
4581 new_dest_sec == output_section->vma + output_offset
4582 We arrange for this to happen by setting RELOCATION to
4583 new_dest_sec + old_src_sec - old_dest_sec
4584
4585 If this is not a PC relative reloc, then R_ADDEND is
4586 simply the VMA of the destination, so we set
4587 RELOCATION to the change in the destination VMA, or
4588 new_dest_sec - old_dest_sec
4589 */
4590 relocation = (r_section->output_section->vma
4591 + r_section->output_offset
4592 - r_section->vma);
4593 if (howto_table_ext[r_type].pc_relative)
252b5132
RH		 4594 relocation += input_section->vma;
4595 }
4596
4597 if (check_dynamic_reloc != NULL)
4598 {
b34976b6 4599 bfd_boolean skip;
252b5132
RH		 4600
4601 if (! ((*check_dynamic_reloc)
57402f1e 4602 (flaginfo->info, input_bfd, input_section, h,
116c20d2 4603 (void *) rel, contents, &skip, &relocation)))
b34976b6 4604 return FALSE;
252b5132
RH		 4605 if (skip)
4606 continue;
4607 }
4608
4609 /* Now warn if a global symbol is undefined. We could not
4610 do this earlier, because check_dynamic_reloc might want
4611 to skip this reloc. */
116c20d2 4612 if (hundef
0e1862bb 4613 && ! bfd_link_pic (flaginfo->info)
116c20d2
NC		 4614 && r_type != (unsigned int) RELOC_BASE10
4615 && r_type != (unsigned int) RELOC_BASE13
4616 && r_type != (unsigned int) RELOC_BASE22)
252b5132
RH		 4617 {
4618 const char *name;
4619
4620 if (h != NULL)
4621 name = h->root.root.string;
4622 else
4623 name = strings + GET_WORD (input_bfd, syms[r_index].e_strx);
57402f1e
NC		 4624 if (! ((*flaginfo->info->callbacks->undefined_symbol)
4625 (flaginfo->info, name, input_bfd, input_section,
b34976b6
AM		 4626 r_addr, TRUE)))
4627 return FALSE;
252b5132
RH		 4628 }
4629
116c20d2
NC		 4630 if (r_type != (unsigned int) RELOC_SPARC_REV32)
4631 r = MY_final_link_relocate (howto_table_ext + r_type,
4632 input_bfd, input_section,
4633 contents, r_addr, relocation,
4634 r_addend);
4635 else
252b5132 4636 {
116c20d2 4637 bfd_vma x;
252b5132 4638
116c20d2
NC		 4639 x = bfd_get_32 (input_bfd, contents + r_addr);
4640 x = x + relocation + r_addend;
4641 bfd_putl32 (/*input_bfd,*/ x, contents + r_addr);
4642 r = bfd_reloc_ok;
4643 }
4644
4645 if (r != bfd_reloc_ok)
4646 {
4647 switch (r)
4648 {
4649 default:
4650 case bfd_reloc_outofrange:
4651 abort ();
4652 case bfd_reloc_overflow:
252b5132 4653 {
116c20d2 4654 const char *name;
252b5132 4655
116c20d2
NC		 4656 if (h != NULL)
4657 name = NULL;
4658 else if (r_extern
4659 || r_type == (unsigned int) RELOC_BASE10
4660 || r_type == (unsigned int) RELOC_BASE13
4661 || r_type == (unsigned int) RELOC_BASE22)
4662 name = strings + GET_WORD (input_bfd,
4663 syms[r_index].e_strx);
4664 else
4665 {
4666 asection *s;
4667
4668 s = aout_reloc_index_to_section (input_bfd, r_index);
4669 name = bfd_section_name (input_bfd, s);
4670 }
57402f1e
NC		 4671 if (! ((*flaginfo->info->callbacks->reloc_overflow)
4672 (flaginfo->info, (h ? &h->root : NULL), name,
116c20d2
NC		 4673 howto_table_ext[r_type].name,
4674 r_addend, input_bfd, input_section, r_addr)))
4675 return FALSE;
252b5132 4676 }
116c20d2
NC		 4677 break;
4678 }
252b5132
RH		 4679 }
4680 }
4681 }
4682
b34976b6 4683 return TRUE;
252b5132
RH		 4684}
4685
116c20d2
NC		 4686/* Link an a.out section into the output file. */
4687
4688static bfd_boolean
57402f1e 4689aout_link_input_section (struct aout_final_link_info *flaginfo,
116c20d2
NC		 4690 bfd *input_bfd,
4691 asection *input_section,
4692 file_ptr *reloff_ptr,
4693 bfd_size_type rel_size)
4694{
4695 bfd_size_type input_size;
4696 void * relocs;
4697
4698 /* Get the section contents. */
4699 input_size = input_section->size;
4700 if (! bfd_get_section_contents (input_bfd, input_section,
57402f1e 4701 (void *) flaginfo->contents,
116c20d2
NC		 4702 (file_ptr) 0, input_size))
4703 return FALSE;
4704
4705 /* Read in the relocs if we haven't already done it. */
4706 if (aout_section_data (input_section) != NULL
4707 && aout_section_data (input_section)->relocs != NULL)
4708 relocs = aout_section_data (input_section)->relocs;
4709 else
4710 {
57402f1e 4711 relocs = flaginfo->relocs;
116c20d2
NC		 4712 if (rel_size > 0)
4713 {
4714 if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0
4715 || bfd_bread (relocs, rel_size, input_bfd) != rel_size)
4716 return FALSE;
4717 }
4718 }
4719
4720 /* Relocate the section contents. */
4721 if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE)
4722 {
57402f1e 4723 if (! aout_link_input_section_std (flaginfo, input_bfd, input_section,
116c20d2 4724 (struct reloc_std_external *) relocs,
57402f1e 4725 rel_size, flaginfo->contents))
116c20d2
NC		 4726 return FALSE;
4727 }
4728 else
4729 {
57402f1e 4730 if (! aout_link_input_section_ext (flaginfo, input_bfd, input_section,
116c20d2 4731 (struct reloc_ext_external *) relocs,
57402f1e 4732 rel_size, flaginfo->contents))
116c20d2
NC		 4733 return FALSE;
4734 }
4735
4736 /* Write out the section contents. */
57402f1e 4737 if (! bfd_set_section_contents (flaginfo->output_bfd,
116c20d2 4738 input_section->output_section,
57402f1e 4739 (void *) flaginfo->contents,
116c20d2
NC		 4740 (file_ptr) input_section->output_offset,
4741 input_size))
4742 return FALSE;
4743
4744 /* If we are producing relocatable output, the relocs were
4745 modified, and we now write them out. */
0e1862bb 4746 if (bfd_link_relocatable (flaginfo->info) && rel_size > 0)
116c20d2 4747 {
57402f1e 4748 if (bfd_seek (flaginfo->output_bfd, *reloff_ptr, SEEK_SET) != 0)
116c20d2 4749 return FALSE;
57402f1e 4750 if (bfd_bwrite (relocs, rel_size, flaginfo->output_bfd) != rel_size)
116c20d2
NC		 4751 return FALSE;
4752 *reloff_ptr += rel_size;
4753
4754 /* Assert that the relocs have not run into the symbols, and
4755 that if these are the text relocs they have not run into the
4756 data relocs. */
57402f1e
NC		 4757 BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (flaginfo->output_bfd)
4758 && (reloff_ptr != &flaginfo->treloff
116c20d2 4759 || (*reloff_ptr
57402f1e 4760 <= obj_datasec (flaginfo->output_bfd)->rel_filepos)));
116c20d2
NC		 4761 }
4762
4763 return TRUE;
4764}
4765
4766/* Adjust and write out the symbols for an a.out file. Set the new
4767 symbol indices into a symbol_map. */
252b5132 4768
b34976b6 4769static bfd_boolean
57402f1e 4770aout_link_write_symbols (struct aout_final_link_info *flaginfo, bfd *input_bfd)
252b5132 4771{
252b5132 4772 bfd *output_bfd;
116c20d2 4773 bfd_size_type sym_count;
252b5132 4774 char *strings;
116c20d2
NC		 4775 enum bfd_link_strip strip;
4776 enum bfd_link_discard discard;
4777 struct external_nlist *outsym;
4778 bfd_size_type strtab_index;
4779 struct external_nlist *sym;
4780 struct external_nlist *sym_end;
4781 struct aout_link_hash_entry **sym_hash;
252b5132 4782 int *symbol_map;
116c20d2
NC		 4783 bfd_boolean pass;
4784 bfd_boolean skip_next;
252b5132 4785
57402f1e 4786 output_bfd = flaginfo->output_bfd;
116c20d2
NC		 4787 sym_count = obj_aout_external_sym_count (input_bfd);
4788 strings = obj_aout_external_strings (input_bfd);
57402f1e
NC		 4789 strip = flaginfo->info->strip;
4790 discard = flaginfo->info->discard;
4791 outsym = flaginfo->output_syms;
252b5132 4792
116c20d2
NC		 4793 /* First write out a symbol for this object file, unless we are
4794 discarding such symbols. */
4795 if (strip != strip_all
4796 && (strip != strip_some
57402f1e 4797 || bfd_hash_lookup (flaginfo->info->keep_hash, input_bfd->filename,
116c20d2
NC		 4798 FALSE, FALSE) != NULL)
4799 && discard != discard_all)
4800 {
4801 H_PUT_8 (output_bfd, N_TEXT, outsym->e_type);
4802 H_PUT_8 (output_bfd, 0, outsym->e_other);
4803 H_PUT_16 (output_bfd, 0, outsym->e_desc);
57402f1e 4804 strtab_index = add_to_stringtab (output_bfd, flaginfo->strtab,
116c20d2
NC		 4805 input_bfd->filename, FALSE);
4806 if (strtab_index == (bfd_size_type) -1)
4807 return FALSE;
4808 PUT_WORD (output_bfd, strtab_index, outsym->e_strx);
4809 PUT_WORD (output_bfd,
4810 (bfd_get_section_vma (output_bfd,
4811 obj_textsec (input_bfd)->output_section)
4812 + obj_textsec (input_bfd)->output_offset),
4813 outsym->e_value);
4814 ++obj_aout_external_sym_count (output_bfd);
4815 ++outsym;
4816 }
252b5132 4817
116c20d2
NC		 4818 pass = FALSE;
4819 skip_next = FALSE;
4820 sym = obj_aout_external_syms (input_bfd);
4821 sym_end = sym + sym_count;
4822 sym_hash = obj_aout_sym_hashes (input_bfd);
57402f1e 4823 symbol_map = flaginfo->symbol_map;
116c20d2
NC		 4824 memset (symbol_map, 0, (size_t) sym_count * sizeof *symbol_map);
4825 for (; sym < sym_end; sym++, sym_hash++, symbol_map++)
252b5132 4826 {
116c20d2
NC		 4827 const char *name;
4828 int type;
4829 struct aout_link_hash_entry *h;
4830 bfd_boolean skip;
4831 asection *symsec;
4832 bfd_vma val = 0;
4833 bfd_boolean copy;
252b5132 4834
116c20d2
NC		 4835 /* We set *symbol_map to 0 above for all symbols. If it has
4836 already been set to -1 for this symbol, it means that we are
4837 discarding it because it appears in a duplicate header file.
4838 See the N_BINCL code below. */
4839 if (*symbol_map == -1)
4840 continue;
252b5132 4841
116c20d2
NC		 4842 /* Initialize *symbol_map to -1, which means that the symbol was
4843 not copied into the output file. We will change it later if
4844 we do copy the symbol over. */
4845 *symbol_map = -1;
4846
4847 type = H_GET_8 (input_bfd, sym->e_type);
4848 name = strings + GET_WORD (input_bfd, sym->e_strx);
4849
4850 h = NULL;
4851
4852 if (pass)
252b5132 4853 {
116c20d2
NC		 4854 /* Pass this symbol through. It is the target of an
4855 indirect or warning symbol. */
4856 val = GET_WORD (input_bfd, sym->e_value);
4857 pass = FALSE;
252b5132 4858 }
116c20d2 4859 else if (skip_next)
252b5132 4860 {
116c20d2
NC		 4861 /* Skip this symbol, which is the target of an indirect
4862 symbol that we have changed to no longer be an indirect
4863 symbol. */
4864 skip_next = FALSE;
4865 continue;
252b5132 4866 }
116c20d2
NC		 4867 else
4868 {
4869 struct aout_link_hash_entry *hresolve;
252b5132 4870
116c20d2
NC		 4871 /* We have saved the hash table entry for this symbol, if
4872 there is one. Note that we could just look it up again
4873 in the hash table, provided we first check that it is an
4874 external symbol. */
4875 h = *sym_hash;
252b5132 4876
116c20d2
NC		 4877 /* Use the name from the hash table, in case the symbol was
4878 wrapped. */
4879 if (h != NULL
4880 && h->root.type != bfd_link_hash_warning)
4881 name = h->root.root.string;
252b5132 4882
116c20d2
NC		 4883 /* If this is an indirect or warning symbol, then change
4884 hresolve to the base symbol. We also change *sym_hash so
4885 that the relocation routines relocate against the real
4886 symbol. */
4887 hresolve = h;
4888 if (h != (struct aout_link_hash_entry *) NULL
4889 && (h->root.type == bfd_link_hash_indirect
4890 || h->root.type == bfd_link_hash_warning))
252b5132 4891 {
116c20d2
NC		 4892 hresolve = (struct aout_link_hash_entry *) h->root.u.i.link;
4893 while (hresolve->root.type == bfd_link_hash_indirect
4894 || hresolve->root.type == bfd_link_hash_warning)
4895 hresolve = ((struct aout_link_hash_entry *)
4896 hresolve->root.u.i.link);
4897 *sym_hash = hresolve;
4898 }
4899
4900 /* If the symbol has already been written out, skip it. */
4901 if (h != NULL
4902 && h->written)
4903 {
4904 if ((type & N_TYPE) == N_INDR
4905 || type == N_WARNING)
4906 skip_next = TRUE;
4907 *symbol_map = h->indx;
4908 continue;
4909 }
4910
4911 /* See if we are stripping this symbol. */
4912 skip = FALSE;
4913 switch (strip)
4914 {
4915 case strip_none:
4916 break;
4917 case strip_debugger:
4918 if ((type & N_STAB) != 0)
4919 skip = TRUE;
4920 break;
4921 case strip_some:
57402f1e 4922 if (bfd_hash_lookup (flaginfo->info->keep_hash, name, FALSE, FALSE)
116c20d2
NC		 4923 == NULL)
4924 skip = TRUE;
4925 break;
4926 case strip_all:
4927 skip = TRUE;
4928 break;
4929 }
4930 if (skip)
4931 {
4932 if (h != NULL)
4933 h->written = TRUE;
4934 continue;
4935 }
4936
4937 /* Get the value of the symbol. */
4938 if ((type & N_TYPE) == N_TEXT
4939 || type == N_WEAKT)
4940 symsec = obj_textsec (input_bfd);
4941 else if ((type & N_TYPE) == N_DATA
4942 || type == N_WEAKD)
4943 symsec = obj_datasec (input_bfd);
4944 else if ((type & N_TYPE) == N_BSS
4945 || type == N_WEAKB)
4946 symsec = obj_bsssec (input_bfd);
4947 else if ((type & N_TYPE) == N_ABS
4948 || type == N_WEAKA)
4949 symsec = bfd_abs_section_ptr;
4950 else if (((type & N_TYPE) == N_INDR
4951 && (hresolve == NULL
4952 || (hresolve->root.type != bfd_link_hash_defined
4953 && hresolve->root.type != bfd_link_hash_defweak
4954 && hresolve->root.type != bfd_link_hash_common)))
4955 || type == N_WARNING)
4956 {
4957 /* Pass the next symbol through unchanged. The
4958 condition above for indirect symbols is so that if
4959 the indirect symbol was defined, we output it with
4960 the correct definition so the debugger will
4961 understand it. */
4962 pass = TRUE;
4963 val = GET_WORD (input_bfd, sym->e_value);
4964 symsec = NULL;
4965 }
4966 else if ((type & N_STAB) != 0)
4967 {
4968 val = GET_WORD (input_bfd, sym->e_value);
4969 symsec = NULL;
4970 }
4971 else
4972 {
4973 /* If we get here with an indirect symbol, it means that
4974 we are outputting it with a real definition. In such
4975 a case we do not want to output the next symbol,
4976 which is the target of the indirection. */
4977 if ((type & N_TYPE) == N_INDR)
4978 skip_next = TRUE;
4979
4980 symsec = NULL;
4981
4982 /* We need to get the value from the hash table. We use
4983 hresolve so that if we have defined an indirect
4984 symbol we output the final definition. */
4985 if (h == NULL)
4986 {
4987 switch (type & N_TYPE)
4988 {
4989 case N_SETT:
4990 symsec = obj_textsec (input_bfd);
4991 break;
4992 case N_SETD:
4993 symsec = obj_datasec (input_bfd);
4994 break;
4995 case N_SETB:
4996 symsec = obj_bsssec (input_bfd);
4997 break;
4998 case N_SETA:
4999 symsec = bfd_abs_section_ptr;
5000 break;
5001 default:
5002 val = 0;
5003 break;
5004 }
5005 }
5006 else if (hresolve->root.type == bfd_link_hash_defined
5007 || hresolve->root.type == bfd_link_hash_defweak)
252b5132 5008 {
116c20d2 5009 asection *input_section;
252b5132
RH		 5010 asection *output_section;
5011
116c20d2
NC		 5012 /* This case usually means a common symbol which was
5013 turned into a defined symbol. */
5014 input_section = hresolve->root.u.def.section;
5015 output_section = input_section->output_section;
5016 BFD_ASSERT (bfd_is_abs_section (output_section)
5017 || output_section->owner == output_bfd);
5018 val = (hresolve->root.u.def.value
5019 + bfd_get_section_vma (output_bfd, output_section)
5020 + input_section->output_offset);
5021
5022 /* Get the correct type based on the section. If
5023 this is a constructed set, force it to be
5024 globally visible. */
5025 if (type == N_SETT
5026 || type == N_SETD
5027 || type == N_SETB
5028 || type == N_SETA)
5029 type |= N_EXT;
5030
5031 type &=~ N_TYPE;
252b5132 5032
252b5132 5033 if (output_section == obj_textsec (output_bfd))
116c20d2
NC		 5034 type |= (hresolve->root.type == bfd_link_hash_defined
5035 ? N_TEXT
5036 : N_WEAKT);
252b5132 5037 else if (output_section == obj_datasec (output_bfd))
116c20d2
NC		 5038 type |= (hresolve->root.type == bfd_link_hash_defined
5039 ? N_DATA
5040 : N_WEAKD);
252b5132 5041 else if (output_section == obj_bsssec (output_bfd))
116c20d2
NC		 5042 type |= (hresolve->root.type == bfd_link_hash_defined
5043 ? N_BSS
5044 : N_WEAKB);
252b5132 5045 else
116c20d2
NC		 5046 type |= (hresolve->root.type == bfd_link_hash_defined
5047 ? N_ABS
5048 : N_WEAKA);
5049 }
5050 else if (hresolve->root.type == bfd_link_hash_common)
5051 val = hresolve->root.u.c.size;
5052 else if (hresolve->root.type == bfd_link_hash_undefweak)
5053 {
5054 val = 0;
5055 type = N_WEAKU;
252b5132
RH		 5056 }
5057 else
116c20d2
NC		 5058 val = 0;
5059 }
5060 if (symsec != NULL)
5061 val = (symsec->output_section->vma
5062 + symsec->output_offset
5063 + (GET_WORD (input_bfd, sym->e_value)
5064 - symsec->vma));
5065
5066 /* If this is a global symbol set the written flag, and if
5067 it is a local symbol see if we should discard it. */
5068 if (h != NULL)
5069 {
5070 h->written = TRUE;
5071 h->indx = obj_aout_external_sym_count (output_bfd);
5072 }
5073 else if ((type & N_TYPE) != N_SETT
5074 && (type & N_TYPE) != N_SETD
5075 && (type & N_TYPE) != N_SETB
5076 && (type & N_TYPE) != N_SETA)
5077 {
5078 switch (discard)
252b5132 5079 {
116c20d2
NC		 5080 case discard_none:
5081 case discard_sec_merge:
5082 break;
5083 case discard_l:
5084 if ((type & N_STAB) == 0
5085 && bfd_is_local_label_name (input_bfd, name))
5086 skip = TRUE;
5087 break;
5088 case discard_all:
5089 skip = TRUE;
5090 break;
5091 }
5092 if (skip)
5093 {
5094 pass = FALSE;
5095 continue;
5096 }
5097 }
252b5132 5098
116c20d2
NC		 5099 /* An N_BINCL symbol indicates the start of the stabs
5100 entries for a header file. We need to scan ahead to the
5101 next N_EINCL symbol, ignoring nesting, adding up all the
5102 characters in the symbol names, not including the file
5103 numbers in types (the first number after an open
5104 parenthesis). */
5105 if (type == (int) N_BINCL)
5106 {
5107 struct external_nlist *incl_sym;
5108 int nest;
5109 struct aout_link_includes_entry *incl_entry;
5110 struct aout_link_includes_totals *t;
5111
5112 val = 0;
5113 nest = 0;
5114 for (incl_sym = sym + 1; incl_sym < sym_end; incl_sym++)
5115 {
5116 int incl_type;
5117
5118 incl_type = H_GET_8 (input_bfd, incl_sym->e_type);
5119 if (incl_type == (int) N_EINCL)
252b5132 5120 {
116c20d2
NC		 5121 if (nest == 0)
5122 break;
5123 --nest;
5124 }
5125 else if (incl_type == (int) N_BINCL)
5126 ++nest;
5127 else if (nest == 0)
5128 {
5129 const char *s;
5130
5131 s = strings + GET_WORD (input_bfd, incl_sym->e_strx);
5132 for (; *s != '\0'; s++)
252b5132 5133 {
116c20d2
NC		 5134 val += *s;
5135 if (*s == '(')
252b5132 5136 {
116c20d2
NC		 5137 /* Skip the file number. */
5138 ++s;
5139 while (ISDIGIT (*s))
5140 ++s;
5141 --s;
252b5132 5142 }
252b5132 5143 }
116c20d2
NC		 5144 }
5145 }
252b5132 5146
116c20d2
NC		 5147 /* If we have already included a header file with the
5148 same value, then replace this one with an N_EXCL
5149 symbol. */
57402f1e
NC		 5150 copy = (bfd_boolean) (! flaginfo->info->keep_memory);
5151 incl_entry = aout_link_includes_lookup (&flaginfo->includes,
116c20d2
NC		 5152 name, TRUE, copy);
5153 if (incl_entry == NULL)
5154 return FALSE;
5155 for (t = incl_entry->totals; t != NULL; t = t->next)
5156 if (t->total == val)
5157 break;
5158 if (t == NULL)
5159 {
5160 /* This is the first time we have seen this header
5161 file with this set of stabs strings. */
a50b1753 5162 t = (struct aout_link_includes_totals *)
57402f1e 5163 bfd_hash_allocate (&flaginfo->includes.root,
116c20d2
NC		 5164 sizeof *t);
5165 if (t == NULL)
5166 return FALSE;
5167 t->total = val;
5168 t->next = incl_entry->totals;
5169 incl_entry->totals = t;
5170 }
5171 else
5172 {
5173 int *incl_map;
5174
5175 /* This is a duplicate header file. We must change
5176 it to be an N_EXCL entry, and mark all the
5177 included symbols to prevent outputting them. */
5178 type = (int) N_EXCL;
5179
5180 nest = 0;
5181 for (incl_sym = sym + 1, incl_map = symbol_map + 1;
5182 incl_sym < sym_end;
5183 incl_sym++, incl_map++)
5184 {
5185 int incl_type;
5186
5187 incl_type = H_GET_8 (input_bfd, incl_sym->e_type);
5188 if (incl_type == (int) N_EINCL)
5189 {
5190 if (nest == 0)
5191 {
5192 *incl_map = -1;
5193 break;
5194 }
5195 --nest;
252b5132 5196 }
116c20d2
NC		 5197 else if (incl_type == (int) N_BINCL)
5198 ++nest;
5199 else if (nest == 0)
5200 *incl_map = -1;
252b5132 5201 }
252b5132
RH		 5202 }
5203 }
116c20d2
NC		 5204 }
5205
5206 /* Copy this symbol into the list of symbols we are going to
5207 write out. */
5208 H_PUT_8 (output_bfd, type, outsym->e_type);
5209 H_PUT_8 (output_bfd, H_GET_8 (input_bfd, sym->e_other), outsym->e_other);
5210 H_PUT_16 (output_bfd, H_GET_16 (input_bfd, sym->e_desc), outsym->e_desc);
5211 copy = FALSE;
57402f1e 5212 if (! flaginfo->info->keep_memory)
116c20d2
NC		 5213 {
5214 /* name points into a string table which we are going to
5215 free. If there is a hash table entry, use that string.
5216 Otherwise, copy name into memory. */
5217 if (h != NULL)
5218 name = h->root.root.string;
252b5132 5219 else
116c20d2
NC		 5220 copy = TRUE;
5221 }
57402f1e 5222 strtab_index = add_to_stringtab (output_bfd, flaginfo->strtab,
116c20d2
NC		 5223 name, copy);
5224 if (strtab_index == (bfd_size_type) -1)
5225 return FALSE;
5226 PUT_WORD (output_bfd, strtab_index, outsym->e_strx);
5227 PUT_WORD (output_bfd, val, outsym->e_value);
5228 *symbol_map = obj_aout_external_sym_count (output_bfd);
5229 ++obj_aout_external_sym_count (output_bfd);
5230 ++outsym;
5231 }
252b5132 5232
116c20d2 5233 /* Write out the output symbols we have just constructed. */
57402f1e 5234 if (outsym > flaginfo->output_syms)
116c20d2
NC		 5235 {
5236 bfd_size_type outsym_size;
252b5132 5237
57402f1e 5238 if (bfd_seek (output_bfd, flaginfo->symoff, SEEK_SET) != 0)
116c20d2 5239 return FALSE;
57402f1e 5240 outsym_size = outsym - flaginfo->output_syms;
116c20d2 5241 outsym_size *= EXTERNAL_NLIST_SIZE;
57402f1e 5242 if (bfd_bwrite ((void *) flaginfo->output_syms, outsym_size, output_bfd)
116c20d2
NC		 5243 != outsym_size)
5244 return FALSE;
57402f1e 5245 flaginfo->symoff += outsym_size;
116c20d2 5246 }
252b5132 5247
116c20d2
NC		 5248 return TRUE;
5249}
252b5132 5250
116c20d2 5251/* Link an a.out input BFD into the output file. */
252b5132 5252
116c20d2 5253static bfd_boolean
57402f1e 5254aout_link_input_bfd (struct aout_final_link_info *flaginfo, bfd *input_bfd)
116c20d2 5255{
116c20d2 5256 BFD_ASSERT (bfd_get_format (input_bfd) == bfd_object);
252b5132 5257
116c20d2
NC		 5258 /* If this is a dynamic object, it may need special handling. */
5259 if ((input_bfd->flags & DYNAMIC) != 0
5260 && aout_backend_info (input_bfd)->link_dynamic_object != NULL)
5261 return ((*aout_backend_info (input_bfd)->link_dynamic_object)
57402f1e 5262 (flaginfo->info, input_bfd));
252b5132 5263
116c20d2 5264 /* Get the symbols. We probably have them already, unless
57402f1e 5265 flaginfo->info->keep_memory is FALSE. */
116c20d2
NC		 5266 if (! aout_get_external_symbols (input_bfd))
5267 return FALSE;
252b5132 5268
116c20d2 5269 /* Write out the symbols and get a map of the new indices. The map
57402f1e
NC		 5270 is placed into flaginfo->symbol_map. */
5271 if (! aout_link_write_symbols (flaginfo, input_bfd))
116c20d2 5272 return FALSE;
252b5132 5273
116c20d2
NC		 5274 /* Relocate and write out the sections. These functions use the
5275 symbol map created by aout_link_write_symbols. The linker_mark
5276 field will be set if these sections are to be included in the
5277 link, which will normally be the case. */
5278 if (obj_textsec (input_bfd)->linker_mark)
5279 {
57402f1e 5280 if (! aout_link_input_section (flaginfo, input_bfd,
116c20d2 5281 obj_textsec (input_bfd),
57402f1e 5282 &flaginfo->treloff,
116c20d2
NC		 5283 exec_hdr (input_bfd)->a_trsize))
5284 return FALSE;
5285 }
5286 if (obj_datasec (input_bfd)->linker_mark)
5287 {
57402f1e 5288 if (! aout_link_input_section (flaginfo, input_bfd,
116c20d2 5289 obj_datasec (input_bfd),
57402f1e 5290 &flaginfo->dreloff,
116c20d2
NC		 5291 exec_hdr (input_bfd)->a_drsize))
5292 return FALSE;
5293 }
5294
5295 /* If we are not keeping memory, we don't need the symbols any
5296 longer. We still need them if we are keeping memory, because the
5297 strings in the hash table point into them. */
57402f1e 5298 if (! flaginfo->info->keep_memory)
116c20d2
NC		 5299 {
5300 if (! aout_link_free_symbols (input_bfd))
5301 return FALSE;
5302 }
5303
5304 return TRUE;
5305}
5306
5307/* Do the final link step. This is called on the output BFD. The
5308 INFO structure should point to a list of BFDs linked through the
c72f2fb2 5309 link.next field which can be used to find each BFD which takes part
116c20d2
NC		 5310 in the output. Also, each section in ABFD should point to a list
5311 of bfd_link_order structures which list all the input sections for
5312 the output section. */
5313
5314bfd_boolean
5315NAME (aout, final_link) (bfd *abfd,
5316 struct bfd_link_info *info,
5317 void (*callback) (bfd *, file_ptr *, file_ptr *, file_ptr *))
5318{
5319 struct aout_final_link_info aout_info;
5320 bfd_boolean includes_hash_initialized = FALSE;
5321 bfd *sub;
5322 bfd_size_type trsize, drsize;
5323 bfd_size_type max_contents_size;
5324 bfd_size_type max_relocs_size;
5325 bfd_size_type max_sym_count;
116c20d2
NC		 5326 struct bfd_link_order *p;
5327 asection *o;
5328 bfd_boolean have_link_order_relocs;
5329
0e1862bb 5330 if (bfd_link_pic (info))
116c20d2
NC		 5331 abfd->flags |= DYNAMIC;
5332
5333 aout_info.info = info;
5334 aout_info.output_bfd = abfd;
5335 aout_info.contents = NULL;
5336 aout_info.relocs = NULL;
5337 aout_info.symbol_map = NULL;
5338 aout_info.output_syms = NULL;
252b5132 5339
66eb6687
AM		 5340 if (!bfd_hash_table_init_n (&aout_info.includes.root,
5341 aout_link_includes_newfunc,
5342 sizeof (struct aout_link_includes_entry),
5343 251))
116c20d2
NC		 5344 goto error_return;
5345 includes_hash_initialized = TRUE;
252b5132 5346
116c20d2
NC		 5347 /* Figure out the largest section size. Also, if generating
5348 relocatable output, count the relocs. */
5349 trsize = 0;
5350 drsize = 0;
5351 max_contents_size = 0;
5352 max_relocs_size = 0;
5353 max_sym_count = 0;
c72f2fb2 5354 for (sub = info->input_bfds; sub != NULL; sub = sub->link.next)
116c20d2
NC		 5355 {
5356 bfd_size_type sz;
252b5132 5357
0e1862bb 5358 if (bfd_link_relocatable (info))
116c20d2
NC		 5359 {
5360 if (bfd_get_flavour (sub) == bfd_target_aout_flavour)
252b5132 5361 {
116c20d2
NC		 5362 trsize += exec_hdr (sub)->a_trsize;
5363 drsize += exec_hdr (sub)->a_drsize;
252b5132 5364 }
252b5132
RH		 5365 else
5366 {
116c20d2
NC		 5367 /* FIXME: We need to identify the .text and .data sections
5368 and call get_reloc_upper_bound and canonicalize_reloc to
5369 work out the number of relocs needed, and then multiply
5370 by the reloc size. */
5371 (*_bfd_error_handler)
5372 (_("%s: relocatable link from %s to %s not supported"),
5373 bfd_get_filename (abfd),
5374 sub->xvec->name, abfd->xvec->name);
5375 bfd_set_error (bfd_error_invalid_operation);
5376 goto error_return;
252b5132 5377 }
116c20d2 5378 }
252b5132 5379
116c20d2
NC		 5380 if (bfd_get_flavour (sub) == bfd_target_aout_flavour)
5381 {
5382 sz = obj_textsec (sub)->size;
5383 if (sz > max_contents_size)
5384 max_contents_size = sz;
5385 sz = obj_datasec (sub)->size;
5386 if (sz > max_contents_size)
5387 max_contents_size = sz;
252b5132 5388
116c20d2
NC		 5389 sz = exec_hdr (sub)->a_trsize;
5390 if (sz > max_relocs_size)
5391 max_relocs_size = sz;
5392 sz = exec_hdr (sub)->a_drsize;
5393 if (sz > max_relocs_size)
5394 max_relocs_size = sz;
252b5132 5395
116c20d2
NC		 5396 sz = obj_aout_external_sym_count (sub);
5397 if (sz > max_sym_count)
5398 max_sym_count = sz;
252b5132
RH		 5399 }
5400 }
5401
0e1862bb 5402 if (bfd_link_relocatable (info))
116c20d2
NC		 5403 {
5404 if (obj_textsec (abfd) != NULL)
5405 trsize += (_bfd_count_link_order_relocs (obj_textsec (abfd)
8423293d 5406 ->map_head.link_order)
116c20d2
NC		 5407 * obj_reloc_entry_size (abfd));
5408 if (obj_datasec (abfd) != NULL)
5409 drsize += (_bfd_count_link_order_relocs (obj_datasec (abfd)
8423293d 5410 ->map_head.link_order)
116c20d2
NC		 5411 * obj_reloc_entry_size (abfd));
5412 }
252b5132 5413
116c20d2
NC		 5414 exec_hdr (abfd)->a_trsize = trsize;
5415 exec_hdr (abfd)->a_drsize = drsize;
252b5132 5416
116c20d2 5417 exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd);
252b5132 5418
116c20d2
NC		 5419 /* Adjust the section sizes and vmas according to the magic number.
5420 This sets a_text, a_data and a_bss in the exec_hdr and sets the
5421 filepos for each section. */
3a8c4a5b 5422 if (! NAME (aout, adjust_sizes_and_vmas) (abfd))
116c20d2 5423 goto error_return;
252b5132 5424
116c20d2
NC		 5425 /* The relocation and symbol file positions differ among a.out
5426 targets. We are passed a callback routine from the backend
5427 specific code to handle this.
5428 FIXME: At this point we do not know how much space the symbol
5429 table will require. This will not work for any (nonstandard)
5430 a.out target that needs to know the symbol table size before it
5431 can compute the relocation file positions. This may or may not
5432 be the case for the hp300hpux target, for example. */
5433 (*callback) (abfd, &aout_info.treloff, &aout_info.dreloff,
5434 &aout_info.symoff);
5435 obj_textsec (abfd)->rel_filepos = aout_info.treloff;
5436 obj_datasec (abfd)->rel_filepos = aout_info.dreloff;
5437 obj_sym_filepos (abfd) = aout_info.symoff;
252b5132 5438
116c20d2
NC		 5439 /* We keep a count of the symbols as we output them. */
5440 obj_aout_external_sym_count (abfd) = 0;
5441
5442 /* We accumulate the string table as we write out the symbols. */
5443 aout_info.strtab = _bfd_stringtab_init ();
5444 if (aout_info.strtab == NULL)
5445 goto error_return;
5446
5447 /* Allocate buffers to hold section contents and relocs. */
a50b1753 5448 aout_info.contents = (bfd_byte *) bfd_malloc (max_contents_size);
116c20d2 5449 aout_info.relocs = bfd_malloc (max_relocs_size);
c38eb2a6 5450 aout_info.symbol_map = (int *) bfd_malloc (max_sym_count * sizeof (int));
a50b1753
NC		 5451 aout_info.output_syms = (struct external_nlist *)
5452 bfd_malloc ((max_sym_count + 1) * sizeof (struct external_nlist));
116c20d2
NC		 5453 if ((aout_info.contents == NULL && max_contents_size != 0)
5454 || (aout_info.relocs == NULL && max_relocs_size != 0)
5455 || (aout_info.symbol_map == NULL && max_sym_count != 0)
5456 || aout_info.output_syms == NULL)
5457 goto error_return;
5458
5459 /* If we have a symbol named __DYNAMIC, force it out now. This is
5460 required by SunOS. Doing this here rather than in sunos.c is a
5461 hack, but it's easier than exporting everything which would be
5462 needed. */
5463 {
5464 struct aout_link_hash_entry *h;
5465
5466 h = aout_link_hash_lookup (aout_hash_table (info), "__DYNAMIC",
5467 FALSE, FALSE, FALSE);
5468 if (h != NULL)
7686d77d 5469 aout_link_write_other_symbol (&h->root.root, &aout_info);
116c20d2
NC		 5470 }
5471
5472 /* The most time efficient way to do the link would be to read all
5473 the input object files into memory and then sort out the
5474 information into the output file. Unfortunately, that will
5475 probably use too much memory. Another method would be to step
5476 through everything that composes the text section and write it
5477 out, and then everything that composes the data section and write
5478 it out, and then write out the relocs, and then write out the
5479 symbols. Unfortunately, that requires reading stuff from each
5480 input file several times, and we will not be able to keep all the
5481 input files open simultaneously, and reopening them will be slow.
5482
5483 What we do is basically process one input file at a time. We do
5484 everything we need to do with an input file once--copy over the
5485 section contents, handle the relocation information, and write
5486 out the symbols--and then we throw away the information we read
5487 from it. This approach requires a lot of lseeks of the output
5488 file, which is unfortunate but still faster than reopening a lot
5489 of files.
5490
5491 We use the output_has_begun field of the input BFDs to see
5492 whether we have already handled it. */
c72f2fb2 5493 for (sub = info->input_bfds; sub != NULL; sub = sub->link.next)
116c20d2 5494 sub->output_has_begun = FALSE;
252b5132 5495
116c20d2
NC		 5496 /* Mark all sections which are to be included in the link. This
5497 will normally be every section. We need to do this so that we
5498 can identify any sections which the linker has decided to not
5499 include. */
5500 for (o = abfd->sections; o != NULL; o = o->next)
252b5132 5501 {
8423293d 5502 for (p = o->map_head.link_order; p != NULL; p = p->next)
116c20d2
NC		 5503 if (p->type == bfd_indirect_link_order)
5504 p->u.indirect.section->linker_mark = TRUE;
252b5132
RH		 5505 }
5506
116c20d2
NC		 5507 have_link_order_relocs = FALSE;
5508 for (o = abfd->sections; o != NULL; o = o->next)
252b5132 5509 {
8423293d 5510 for (p = o->map_head.link_order;
116c20d2
NC		 5511 p != NULL;
5512 p = p->next)
252b5132 5513 {
116c20d2
NC		 5514 if (p->type == bfd_indirect_link_order
5515 && (bfd_get_flavour (p->u.indirect.section->owner)
5516 == bfd_target_aout_flavour))
252b5132 5517 {
116c20d2
NC		 5518 bfd *input_bfd;
5519
5520 input_bfd = p->u.indirect.section->owner;
5521 if (! input_bfd->output_has_begun)
252b5132 5522 {
116c20d2
NC		 5523 if (! aout_link_input_bfd (&aout_info, input_bfd))
5524 goto error_return;
5525 input_bfd->output_has_begun = TRUE;
252b5132 5526 }
252b5132 5527 }
116c20d2
NC		 5528 else if (p->type == bfd_section_reloc_link_order
5529 || p->type == bfd_symbol_reloc_link_order)
5530 {
5531 /* These are handled below. */
5532 have_link_order_relocs = TRUE;
5533 }
5534 else
5535 {
5536 if (! _bfd_default_link_order (abfd, info, o, p))
5537 goto error_return;
5538 }
252b5132
RH		 5539 }
5540 }
252b5132 5541
116c20d2 5542 /* Write out any symbols that we have not already written out. */
7686d77d
AM		 5543 bfd_hash_traverse (&info->hash->table,
5544 aout_link_write_other_symbol,
5545 &aout_info);
116c20d2
NC		 5546
5547 /* Now handle any relocs we were asked to create by the linker.
5548 These did not come from any input file. We must do these after
5549 we have written out all the symbols, so that we know the symbol
5550 indices to use. */
5551 if (have_link_order_relocs)
5552 {
5553 for (o = abfd->sections; o != NULL; o = o->next)
252b5132 5554 {
8423293d 5555 for (p = o->map_head.link_order;
116c20d2
NC		 5556 p != NULL;
5557 p = p->next)
5558 {
5559 if (p->type == bfd_section_reloc_link_order
5560 || p->type == bfd_symbol_reloc_link_order)
5561 {
5562 if (! aout_link_reloc_link_order (&aout_info, o, p))
5563 goto error_return;
5564 }
5565 }
252b5132 5566 }
116c20d2 5567 }
252b5132 5568
116c20d2
NC		 5569 if (aout_info.contents != NULL)
5570 {
5571 free (aout_info.contents);
5572 aout_info.contents = NULL;
5573 }
5574 if (aout_info.relocs != NULL)
5575 {
5576 free (aout_info.relocs);
5577 aout_info.relocs = NULL;
5578 }
5579 if (aout_info.symbol_map != NULL)
5580 {
5581 free (aout_info.symbol_map);
5582 aout_info.symbol_map = NULL;
5583 }
5584 if (aout_info.output_syms != NULL)
5585 {
5586 free (aout_info.output_syms);
5587 aout_info.output_syms = NULL;
5588 }
5589 if (includes_hash_initialized)
5590 {
5591 bfd_hash_table_free (&aout_info.includes.root);
5592 includes_hash_initialized = FALSE;
5593 }
252b5132 5594
116c20d2
NC		 5595 /* Finish up any dynamic linking we may be doing. */
5596 if (aout_backend_info (abfd)->finish_dynamic_link != NULL)
5597 {
5598 if (! (*aout_backend_info (abfd)->finish_dynamic_link) (abfd, info))
5599 goto error_return;
252b5132
RH		 5600 }
5601
116c20d2
NC		 5602 /* Update the header information. */
5603 abfd->symcount = obj_aout_external_sym_count (abfd);
5604 exec_hdr (abfd)->a_syms = abfd->symcount * EXTERNAL_NLIST_SIZE;
5605 obj_str_filepos (abfd) = obj_sym_filepos (abfd) + exec_hdr (abfd)->a_syms;
5606 obj_textsec (abfd)->reloc_count =
5607 exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd);
5608 obj_datasec (abfd)->reloc_count =
5609 exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd);
252b5132 5610
116c20d2 5611 /* Write out the string table, unless there are no symbols. */
f6e688f7
AM		 5612 if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0)
5613 goto error_return;
116c20d2
NC		 5614 if (abfd->symcount > 0)
5615 {
f6e688f7 5616 if (!emit_stringtab (abfd, aout_info.strtab))
116c20d2
NC		 5617 goto error_return;
5618 }
f6e688f7 5619 else
116c20d2 5620 {
f6e688f7 5621 bfd_byte b[BYTES_IN_WORD];
252b5132 5622
f6e688f7
AM		 5623 memset (b, 0, BYTES_IN_WORD);
5624 if (bfd_bwrite (b, (bfd_size_type) BYTES_IN_WORD, abfd) != BYTES_IN_WORD)
116c20d2
NC		 5625 goto error_return;
5626 }
252b5132 5627
b34976b6 5628 return TRUE;
116c20d2
NC		 5629
5630 error_return:
5631 if (aout_info.contents != NULL)
5632 free (aout_info.contents);
5633 if (aout_info.relocs != NULL)
5634 free (aout_info.relocs);
5635 if (aout_info.symbol_map != NULL)
5636 free (aout_info.symbol_map);
5637 if (aout_info.output_syms != NULL)
5638 free (aout_info.output_syms);
5639 if (includes_hash_initialized)
5640 bfd_hash_table_free (&aout_info.includes.root);
5641 return FALSE;
252b5132 5642}
GDB Binutils - Deliverables
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