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[deliverable/binutils-gdb.git] / bfd / aoutx.h
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252b5132 1/* BFD semi-generic back-end for a.out binaries.
9553c638 2 Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
3db64b00 3 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
252b5132
RH		 4 Free Software Foundation, Inc.
5 Written by Cygnus Support.
6
f7c33884 7 This file is part of BFD, the Binary File Descriptor library.
252b5132 8
f7c33884
NC		 9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
cd123cb7 11 the Free Software Foundation; either version 3 of the License, or
f7c33884 12 (at your option) any later version.
252b5132 13
f7c33884
NC		 14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
252b5132 18
f7c33884
NC		 19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
cd123cb7
NC		 21 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
22 MA 02110-1301, USA. */
252b5132
RH		 23
24/*
25SECTION
26 a.out backends
27
252b5132
RH		 28DESCRIPTION
29
30 BFD supports a number of different flavours of a.out format,
31 though the major differences are only the sizes of the
32 structures on disk, and the shape of the relocation
33 information.
34
35 The support is split into a basic support file @file{aoutx.h}
36 and other files which derive functions from the base. One
37 derivation file is @file{aoutf1.h} (for a.out flavour 1), and
38 adds to the basic a.out functions support for sun3, sun4, 386
39 and 29k a.out files, to create a target jump vector for a
40 specific target.
41
42 This information is further split out into more specific files
43 for each machine, including @file{sunos.c} for sun3 and sun4,
44 @file{newsos3.c} for the Sony NEWS, and @file{demo64.c} for a
45 demonstration of a 64 bit a.out format.
46
47 The base file @file{aoutx.h} defines general mechanisms for
48 reading and writing records to and from disk and various
49 other methods which BFD requires. It is included by
50 @file{aout32.c} and @file{aout64.c} to form the names
51 <<aout_32_swap_exec_header_in>>, <<aout_64_swap_exec_header_in>>, etc.
52
53 As an example, this is what goes on to make the back end for a
54 sun4, from @file{aout32.c}:
55
56| #define ARCH_SIZE 32
57| #include "aoutx.h"
58
59 Which exports names:
60
61| ...
62| aout_32_canonicalize_reloc
63| aout_32_find_nearest_line
64| aout_32_get_lineno
65| aout_32_get_reloc_upper_bound
66| ...
67
68 from @file{sunos.c}:
69
70| #define TARGET_NAME "a.out-sunos-big"
71| #define VECNAME sunos_big_vec
72| #include "aoutf1.h"
73
74 requires all the names from @file{aout32.c}, and produces the jump vector
75
76| sunos_big_vec
77
78 The file @file{host-aout.c} is a special case. It is for a large set
79 of hosts that use ``more or less standard'' a.out files, and
80 for which cross-debugging is not interesting. It uses the
81 standard 32-bit a.out support routines, but determines the
82 file offsets and addresses of the text, data, and BSS
83 sections, the machine architecture and machine type, and the
84 entry point address, in a host-dependent manner. Once these
85 values have been determined, generic code is used to handle
86 the object file.
87
88 When porting it to run on a new system, you must supply:
89
90| HOST_PAGE_SIZE
91| HOST_SEGMENT_SIZE
92| HOST_MACHINE_ARCH (optional)
93| HOST_MACHINE_MACHINE (optional)
94| HOST_TEXT_START_ADDR
95| HOST_STACK_END_ADDR
96
97 in the file @file{../include/sys/h-@var{XXX}.h} (for your host). These
98 values, plus the structures and macros defined in @file{a.out.h} on
99 your host system, will produce a BFD target that will access
100 ordinary a.out files on your host. To configure a new machine
101 to use @file{host-aout.c}, specify:
102
103| TDEFAULTS = -DDEFAULT_VECTOR=host_aout_big_vec
104| TDEPFILES= host-aout.o trad-core.o
105
106 in the @file{config/@var{XXX}.mt} file, and modify @file{configure.in}
107 to use the
108 @file{@var{XXX}.mt} file (by setting "<<bfd_target=XXX>>") when your
5ed6aba4 109 configuration is selected. */
252b5132
RH		 110
111/* Some assumptions:
112 * Any BFD with D_PAGED set is ZMAGIC, and vice versa.
113 Doesn't matter what the setting of WP_TEXT is on output, but it'll
114 get set on input.
115 * Any BFD with D_PAGED clear and WP_TEXT set is NMAGIC.
116 * Any BFD with both flags clear is OMAGIC.
117 (Just want to make these explicit, so the conditions tested in this
118 file make sense if you're more familiar with a.out than with BFD.) */
119
120#define KEEPIT udata.i
121
252b5132 122#include "sysdep.h"
3db64b00 123#include "bfd.h"
3882b010 124#include "safe-ctype.h"
252b5132
RH		 125#include "bfdlink.h"
126
127#include "libaout.h"
128#include "libbfd.h"
129#include "aout/aout64.h"
130#include "aout/stab_gnu.h"
131#include "aout/ar.h"
132
252b5132
RH		 133/*
134SUBSECTION
135 Relocations
136
137DESCRIPTION
138 The file @file{aoutx.h} provides for both the @emph{standard}
139 and @emph{extended} forms of a.out relocation records.
140
141 The standard records contain only an
142 address, a symbol index, and a type field. The extended records
143 (used on 29ks and sparcs) also have a full integer for an
5ed6aba4 144 addend. */
252b5132 145
252b5132
RH		 146#ifndef CTOR_TABLE_RELOC_HOWTO
147#define CTOR_TABLE_RELOC_IDX 2
923f08ff
AM		 148#define CTOR_TABLE_RELOC_HOWTO(BFD) \
149 ((obj_reloc_entry_size (BFD) == RELOC_EXT_SIZE \
150 ? howto_table_ext : howto_table_std) \
151 + CTOR_TABLE_RELOC_IDX)
252b5132
RH		 152#endif
153
154#ifndef MY_swap_std_reloc_in
116c20d2 155#define MY_swap_std_reloc_in NAME (aout, swap_std_reloc_in)
252b5132
RH		 156#endif
157
1642229e 158#ifndef MY_swap_ext_reloc_in
116c20d2 159#define MY_swap_ext_reloc_in NAME (aout, swap_ext_reloc_in)
1642229e
HPN		 160#endif
161
252b5132 162#ifndef MY_swap_std_reloc_out
116c20d2 163#define MY_swap_std_reloc_out NAME (aout, swap_std_reloc_out)
252b5132
RH		 164#endif
165
1642229e 166#ifndef MY_swap_ext_reloc_out
116c20d2 167#define MY_swap_ext_reloc_out NAME (aout, swap_ext_reloc_out)
1642229e
HPN		 168#endif
169
252b5132
RH		 170#ifndef MY_final_link_relocate
171#define MY_final_link_relocate _bfd_final_link_relocate
172#endif
173
174#ifndef MY_relocate_contents
175#define MY_relocate_contents _bfd_relocate_contents
176#endif
177
116c20d2
NC		 178#define howto_table_ext NAME (aout, ext_howto_table)
179#define howto_table_std NAME (aout, std_howto_table)
252b5132
RH		 180
181reloc_howto_type howto_table_ext[] =
182{
116c20d2
NC		 183 /* Type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone. */
184 HOWTO (RELOC_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, 0, "8", FALSE, 0, 0x000000ff, FALSE),
185 HOWTO (RELOC_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, 0, "16", FALSE, 0, 0x0000ffff, FALSE),
186 HOWTO (RELOC_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, 0, "32", FALSE, 0, 0xffffffff, FALSE),
187 HOWTO (RELOC_DISP8, 0, 0, 8, TRUE, 0, complain_overflow_signed, 0, "DISP8", FALSE, 0, 0x000000ff, FALSE),
188 HOWTO (RELOC_DISP16, 0, 1, 16, TRUE, 0, complain_overflow_signed, 0, "DISP16", FALSE, 0, 0x0000ffff, FALSE),
189 HOWTO (RELOC_DISP32, 0, 2, 32, TRUE, 0, complain_overflow_signed, 0, "DISP32", FALSE, 0, 0xffffffff, FALSE),
190 HOWTO (RELOC_WDISP30, 2, 2, 30, TRUE, 0, complain_overflow_signed, 0, "WDISP30", FALSE, 0, 0x3fffffff, FALSE),
191 HOWTO (RELOC_WDISP22, 2, 2, 22, TRUE, 0, complain_overflow_signed, 0, "WDISP22", FALSE, 0, 0x003fffff, FALSE),
192 HOWTO (RELOC_HI22, 10, 2, 22, FALSE, 0, complain_overflow_bitfield, 0, "HI22", FALSE, 0, 0x003fffff, FALSE),
193 HOWTO (RELOC_22, 0, 2, 22, FALSE, 0, complain_overflow_bitfield, 0, "22", FALSE, 0, 0x003fffff, FALSE),
194 HOWTO (RELOC_13, 0, 2, 13, FALSE, 0, complain_overflow_bitfield, 0, "13", FALSE, 0, 0x00001fff, FALSE),
195 HOWTO (RELOC_LO10, 0, 2, 10, FALSE, 0, complain_overflow_dont, 0, "LO10", FALSE, 0, 0x000003ff, FALSE),
196 HOWTO (RELOC_SFA_BASE,0, 2, 32, FALSE, 0, complain_overflow_bitfield, 0, "SFA_BASE", FALSE, 0, 0xffffffff, FALSE),
197 HOWTO (RELOC_SFA_OFF13,0, 2, 32, FALSE, 0, complain_overflow_bitfield, 0, "SFA_OFF13", FALSE, 0, 0xffffffff, FALSE),
198 HOWTO (RELOC_BASE10, 0, 2, 10, FALSE, 0, complain_overflow_dont, 0, "BASE10", FALSE, 0, 0x000003ff, FALSE),
199 HOWTO (RELOC_BASE13, 0, 2, 13, FALSE, 0, complain_overflow_signed, 0, "BASE13", FALSE, 0, 0x00001fff, FALSE),
200 HOWTO (RELOC_BASE22, 10, 2, 22, FALSE, 0, complain_overflow_bitfield, 0, "BASE22", FALSE, 0, 0x003fffff, FALSE),
201 HOWTO (RELOC_PC10, 0, 2, 10, TRUE, 0, complain_overflow_dont, 0, "PC10", FALSE, 0, 0x000003ff, TRUE),
202 HOWTO (RELOC_PC22, 10, 2, 22, TRUE, 0, complain_overflow_signed, 0, "PC22", FALSE, 0, 0x003fffff, TRUE),
203 HOWTO (RELOC_JMP_TBL, 2, 2, 30, TRUE, 0, complain_overflow_signed, 0, "JMP_TBL", FALSE, 0, 0x3fffffff, FALSE),
204 HOWTO (RELOC_SEGOFF16,0, 2, 0, FALSE, 0, complain_overflow_bitfield, 0, "SEGOFF16", FALSE, 0, 0x00000000, FALSE),
205 HOWTO (RELOC_GLOB_DAT,0, 2, 0, FALSE, 0, complain_overflow_bitfield, 0, "GLOB_DAT", FALSE, 0, 0x00000000, FALSE),
206 HOWTO (RELOC_JMP_SLOT,0, 2, 0, FALSE, 0, complain_overflow_bitfield, 0, "JMP_SLOT", FALSE, 0, 0x00000000, FALSE),
207 HOWTO (RELOC_RELATIVE,0, 2, 0, FALSE, 0, complain_overflow_bitfield, 0, "RELATIVE", FALSE, 0, 0x00000000, FALSE),
208 HOWTO (0, 0, 0, 0, FALSE, 0, complain_overflow_dont, 0, "R_SPARC_NONE",FALSE, 0, 0x00000000, TRUE),
209 HOWTO (0, 0, 0, 0, FALSE, 0, complain_overflow_dont, 0, "R_SPARC_NONE",FALSE, 0, 0x00000000, TRUE),
252b5132 210#define RELOC_SPARC_REV32 RELOC_WDISP19
116c20d2 211 HOWTO (RELOC_SPARC_REV32, 0, 2, 32, FALSE, 0, complain_overflow_dont, 0,"R_SPARC_REV32",FALSE, 0, 0xffffffff, FALSE),
252b5132
RH		 212};
213
214/* Convert standard reloc records to "arelent" format (incl byte swap). */
215
5ed6aba4
NC		 216reloc_howto_type howto_table_std[] =
217{
f7c33884 218 /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone. */
b34976b6
AM		 219HOWTO ( 0, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,0,"8", TRUE, 0x000000ff,0x000000ff, FALSE),
220HOWTO ( 1, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,0,"16", TRUE, 0x0000ffff,0x0000ffff, FALSE),
221HOWTO ( 2, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,0,"32", TRUE, 0xffffffff,0xffffffff, FALSE),
222HOWTO ( 3, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,0,"64", TRUE, 0xdeaddead,0xdeaddead, FALSE),
223HOWTO ( 4, 0, 0, 8, TRUE, 0, complain_overflow_signed, 0,"DISP8", TRUE, 0x000000ff,0x000000ff, FALSE),
224HOWTO ( 5, 0, 1, 16, TRUE, 0, complain_overflow_signed, 0,"DISP16", TRUE, 0x0000ffff,0x0000ffff, FALSE),
225HOWTO ( 6, 0, 2, 32, TRUE, 0, complain_overflow_signed, 0,"DISP32", TRUE, 0xffffffff,0xffffffff, FALSE),
226HOWTO ( 7, 0, 4, 64, TRUE, 0, complain_overflow_signed, 0,"DISP64", TRUE, 0xfeedface,0xfeedface, FALSE),
227HOWTO ( 8, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"GOT_REL", FALSE, 0,0x00000000, FALSE),
228HOWTO ( 9, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,0,"BASE16", FALSE,0xffffffff,0xffffffff, FALSE),
229HOWTO (10, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,0,"BASE32", FALSE,0xffffffff,0xffffffff, FALSE),
5f771d47
ILT		 230EMPTY_HOWTO (-1),
231EMPTY_HOWTO (-1),
232EMPTY_HOWTO (-1),
233EMPTY_HOWTO (-1),
234EMPTY_HOWTO (-1),
b34976b6 235 HOWTO (16, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"JMP_TABLE", FALSE, 0,0x00000000, FALSE),
5f771d47
ILT		 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),
249EMPTY_HOWTO (-1),
250EMPTY_HOWTO (-1),
b34976b6 251 HOWTO (32, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"RELATIVE", FALSE, 0,0x00000000, FALSE),
5f771d47
ILT		 252EMPTY_HOWTO (-1),
253EMPTY_HOWTO (-1),
254EMPTY_HOWTO (-1),
255EMPTY_HOWTO (-1),
256EMPTY_HOWTO (-1),
257EMPTY_HOWTO (-1),
258EMPTY_HOWTO (-1),
b34976b6 259 HOWTO (40, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"BASEREL", FALSE, 0,0x00000000, FALSE),
252b5132
RH		 260};
261
923f08ff 262#define TABLE_SIZE(TABLE) (sizeof (TABLE) / sizeof (TABLE[0]))
252b5132
RH		 263
264reloc_howto_type *
116c20d2 265NAME (aout, reloc_type_lookup) (bfd *abfd, bfd_reloc_code_real_type code)
252b5132 266{
116c20d2
NC		 267#define EXT(i, j) case i: return & howto_table_ext [j]
268#define STD(i, j) case i: return & howto_table_std [j]
252b5132 269 int ext = obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE;
f7c33884 270
252b5132
RH		 271 if (code == BFD_RELOC_CTOR)
272 switch (bfd_get_arch_info (abfd)->bits_per_address)
273 {
274 case 32:
275 code = BFD_RELOC_32;
276 break;
277 case 64:
278 code = BFD_RELOC_64;
279 break;
280 }
f7c33884 281
252b5132
RH		 282 if (ext)
283 switch (code)
284 {
1642229e
HPN		 285 EXT (BFD_RELOC_8, 0);
286 EXT (BFD_RELOC_16, 1);
252b5132
RH		 287 EXT (BFD_RELOC_32, 2);
288 EXT (BFD_RELOC_HI22, 8);
289 EXT (BFD_RELOC_LO10, 11);
290 EXT (BFD_RELOC_32_PCREL_S2, 6);
291 EXT (BFD_RELOC_SPARC_WDISP22, 7);
292 EXT (BFD_RELOC_SPARC13, 10);
293 EXT (BFD_RELOC_SPARC_GOT10, 14);
294 EXT (BFD_RELOC_SPARC_BASE13, 15);
295 EXT (BFD_RELOC_SPARC_GOT13, 15);
296 EXT (BFD_RELOC_SPARC_GOT22, 16);
297 EXT (BFD_RELOC_SPARC_PC10, 17);
298 EXT (BFD_RELOC_SPARC_PC22, 18);
299 EXT (BFD_RELOC_SPARC_WPLT30, 19);
300 EXT (BFD_RELOC_SPARC_REV32, 26);
116c20d2
NC		 301 default:
302 return NULL;
252b5132
RH		 303 }
304 else
f7c33884 305 /* std relocs. */
252b5132
RH		 306 switch (code)
307 {
2846975a 308 STD (BFD_RELOC_8, 0);
252b5132
RH		 309 STD (BFD_RELOC_16, 1);
310 STD (BFD_RELOC_32, 2);
311 STD (BFD_RELOC_8_PCREL, 4);
312 STD (BFD_RELOC_16_PCREL, 5);
313 STD (BFD_RELOC_32_PCREL, 6);
314 STD (BFD_RELOC_16_BASEREL, 9);
315 STD (BFD_RELOC_32_BASEREL, 10);
116c20d2
NC		 316 default:
317 return NULL;
252b5132
RH		 318 }
319}
320
157090f7
AM		 321reloc_howto_type *
322NAME (aout, reloc_name_lookup) (bfd *abfd, const char *r_name)
323{
324 unsigned int i, size;
325 reloc_howto_type *howto_table;
326
327 if (obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE)
328 {
329 howto_table = howto_table_ext;
330 size = sizeof (howto_table_ext) / sizeof (howto_table_ext[0]);
331 }
332 else
333 {
334 howto_table = howto_table_std;
335 size = sizeof (howto_table_std) / sizeof (howto_table_std[0]);
336 }
337
338 for (i = 0; i < size; i++)
339 if (howto_table[i].name != NULL
340 && strcasecmp (howto_table[i].name, r_name) == 0)
341 return &howto_table[i];
342
343 return NULL;
344}
345
252b5132
RH		 346/*
347SUBSECTION
348 Internal entry points
349
350DESCRIPTION
351 @file{aoutx.h} exports several routines for accessing the
352 contents of an a.out file, which are gathered and exported in
353 turn by various format specific files (eg sunos.c).
252b5132
RH		 354*/
355
356/*
357FUNCTION
358 aout_@var{size}_swap_exec_header_in
359
360SYNOPSIS
361 void aout_@var{size}_swap_exec_header_in,
362 (bfd *abfd,
116c20d2 363 struct external_exec *bytes,
252b5132
RH		 364 struct internal_exec *execp);
365
366DESCRIPTION
367 Swap the information in an executable header @var{raw_bytes} taken
368 from a raw byte stream memory image into the internal exec header
369 structure @var{execp}.
370*/
371
372#ifndef NAME_swap_exec_header_in
373void
116c20d2
NC		 374NAME (aout, swap_exec_header_in) (bfd *abfd,
375 struct external_exec *bytes,
376 struct internal_exec *execp)
252b5132 377{
252b5132
RH		 378 /* The internal_exec structure has some fields that are unused in this
379 configuration (IE for i960), so ensure that all such uninitialized
380 fields are zero'd out. There are places where two of these structs
0ef5a5bd 381 are memcmp'd, and thus the contents do matter. */
116c20d2 382 memset ((void *) execp, 0, sizeof (struct internal_exec));
252b5132 383 /* Now fill in fields in the execp, from the bytes in the raw data. */
dc810e39 384 execp->a_info = H_GET_32 (abfd, bytes->e_info);
252b5132
RH		 385 execp->a_text = GET_WORD (abfd, bytes->e_text);
386 execp->a_data = GET_WORD (abfd, bytes->e_data);
387 execp->a_bss = GET_WORD (abfd, bytes->e_bss);
388 execp->a_syms = GET_WORD (abfd, bytes->e_syms);
389 execp->a_entry = GET_WORD (abfd, bytes->e_entry);
390 execp->a_trsize = GET_WORD (abfd, bytes->e_trsize);
391 execp->a_drsize = GET_WORD (abfd, bytes->e_drsize);
392}
116c20d2 393#define NAME_swap_exec_header_in NAME (aout, swap_exec_header_in)
252b5132
RH		 394#endif
395
396/*
397FUNCTION
398 aout_@var{size}_swap_exec_header_out
399
400SYNOPSIS
401 void aout_@var{size}_swap_exec_header_out
402 (bfd *abfd,
403 struct internal_exec *execp,
404 struct external_exec *raw_bytes);
405
406DESCRIPTION
407 Swap the information in an internal exec header structure
408 @var{execp} into the buffer @var{raw_bytes} ready for writing to disk.
409*/
410void
116c20d2
NC		 411NAME (aout, swap_exec_header_out) (bfd *abfd,
412 struct internal_exec *execp,
413 struct external_exec *bytes)
252b5132 414{
0ef5a5bd 415 /* Now fill in fields in the raw data, from the fields in the exec struct. */
dc810e39 416 H_PUT_32 (abfd, execp->a_info , bytes->e_info);
252b5132
RH		 417 PUT_WORD (abfd, execp->a_text , bytes->e_text);
418 PUT_WORD (abfd, execp->a_data , bytes->e_data);
419 PUT_WORD (abfd, execp->a_bss , bytes->e_bss);
420 PUT_WORD (abfd, execp->a_syms , bytes->e_syms);
421 PUT_WORD (abfd, execp->a_entry , bytes->e_entry);
422 PUT_WORD (abfd, execp->a_trsize, bytes->e_trsize);
423 PUT_WORD (abfd, execp->a_drsize, bytes->e_drsize);
424}
425
426/* Make all the section for an a.out file. */
427
b34976b6 428bfd_boolean
116c20d2 429NAME (aout, make_sections) (bfd *abfd)
252b5132 430{
116c20d2 431 if (obj_textsec (abfd) == NULL && bfd_make_section (abfd, ".text") == NULL)
b34976b6 432 return FALSE;
116c20d2 433 if (obj_datasec (abfd) == NULL && bfd_make_section (abfd, ".data") == NULL)
b34976b6 434 return FALSE;
116c20d2 435 if (obj_bsssec (abfd) == NULL && bfd_make_section (abfd, ".bss") == NULL)
b34976b6
AM		 436 return FALSE;
437 return TRUE;
252b5132
RH		 438}
439
440/*
441FUNCTION
442 aout_@var{size}_some_aout_object_p
443
444SYNOPSIS
445 const bfd_target *aout_@var{size}_some_aout_object_p
446 (bfd *abfd,
116c20d2
NC		 447 struct internal_exec *execp,
448 const bfd_target *(*callback_to_real_object_p) (bfd *));
252b5132
RH		 449
450DESCRIPTION
451 Some a.out variant thinks that the file open in @var{abfd}
452 checking is an a.out file. Do some more checking, and set up
453 for access if it really is. Call back to the calling
454 environment's "finish up" function just before returning, to
455 handle any last-minute setup.
456*/
457
458const bfd_target *
116c20d2
NC		 459NAME (aout, some_aout_object_p) (bfd *abfd,
460 struct internal_exec *execp,
461 const bfd_target *(*callback_to_real_object_p) (bfd *))
252b5132
RH		 462{
463 struct aout_data_struct *rawptr, *oldrawptr;
464 const bfd_target *result;
116c20d2 465 bfd_size_type amt = sizeof (* rawptr);
252b5132 466
116c20d2 467 rawptr = bfd_zalloc (abfd, amt);
252b5132 468 if (rawptr == NULL)
116c20d2 469 return NULL;
252b5132
RH		 470
471 oldrawptr = abfd->tdata.aout_data;
472 abfd->tdata.aout_data = rawptr;
473
474 /* Copy the contents of the old tdata struct.
475 In particular, we want the subformat, since for hpux it was set in
476 hp300hpux.c:swap_exec_header_in and will be used in
477 hp300hpux.c:callback. */
478 if (oldrawptr != NULL)
479 *abfd->tdata.aout_data = *oldrawptr;
480
481 abfd->tdata.aout_data->a.hdr = &rawptr->e;
f7c33884
NC		 482 /* Copy in the internal_exec struct. */
483 *(abfd->tdata.aout_data->a.hdr) = *execp;
252b5132
RH		 484 execp = abfd->tdata.aout_data->a.hdr;
485
f7c33884 486 /* Set the file flags. */
252b5132
RH		 487 abfd->flags = BFD_NO_FLAGS;
488 if (execp->a_drsize || execp->a_trsize)
489 abfd->flags |= HAS_RELOC;
f7c33884 490 /* Setting of EXEC_P has been deferred to the bottom of this function. */
252b5132
RH		 491 if (execp->a_syms)
492 abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS;
923f08ff 493 if (N_DYNAMIC (*execp))
252b5132
RH		 494 abfd->flags |= DYNAMIC;
495
496 if (N_MAGIC (*execp) == ZMAGIC)
497 {
498 abfd->flags |= D_PAGED | WP_TEXT;
499 adata (abfd).magic = z_magic;
500 }
501 else if (N_MAGIC (*execp) == QMAGIC)
502 {
503 abfd->flags |= D_PAGED | WP_TEXT;
504 adata (abfd).magic = z_magic;
505 adata (abfd).subformat = q_magic_format;
506 }
507 else if (N_MAGIC (*execp) == NMAGIC)
508 {
509 abfd->flags |= WP_TEXT;
510 adata (abfd).magic = n_magic;
511 }
512 else if (N_MAGIC (*execp) == OMAGIC
513 || N_MAGIC (*execp) == BMAGIC)
514 adata (abfd).magic = o_magic;
515 else
116c20d2
NC		 516 /* Should have been checked with N_BADMAG before this routine
517 was called. */
518 abort ();
252b5132
RH		 519
520 bfd_get_start_address (abfd) = execp->a_entry;
521
116c20d2 522 obj_aout_symbols (abfd) = NULL;
252b5132
RH		 523 bfd_get_symcount (abfd) = execp->a_syms / sizeof (struct external_nlist);
524
525 /* The default relocation entry size is that of traditional V7 Unix. */
526 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
527
0ef5a5bd 528 /* The default symbol entry size is that of traditional Unix. */
252b5132
RH		 529 obj_symbol_entry_size (abfd) = EXTERNAL_NLIST_SIZE;
530
531#ifdef USE_MMAP
532 bfd_init_window (&obj_aout_sym_window (abfd));
533 bfd_init_window (&obj_aout_string_window (abfd));
534#endif
535 obj_aout_external_syms (abfd) = NULL;
536 obj_aout_external_strings (abfd) = NULL;
537 obj_aout_sym_hashes (abfd) = NULL;
538
116c20d2 539 if (! NAME (aout, make_sections) (abfd))
487e54f2 540 goto error_ret;
252b5132 541
eea6121a
AM		 542 obj_datasec (abfd)->size = execp->a_data;
543 obj_bsssec (abfd)->size = execp->a_bss;
252b5132
RH		 544
545 obj_textsec (abfd)->flags =
546 (execp->a_trsize != 0
547 ? (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_RELOC)
548 : (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS));
549 obj_datasec (abfd)->flags =
550 (execp->a_drsize != 0
551 ? (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS | SEC_RELOC)
552 : (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS));
553 obj_bsssec (abfd)->flags = SEC_ALLOC;
554
555#ifdef THIS_IS_ONLY_DOCUMENTATION
556 /* The common code can't fill in these things because they depend
557 on either the start address of the text segment, the rounding
558 up of virtual addresses between segments, or the starting file
559 position of the text segment -- all of which varies among different
560 versions of a.out. */
561
562 /* Call back to the format-dependent code to fill in the rest of the
563 fields and do any further cleanup. Things that should be filled
564 in by the callback: */
565
566 struct exec *execp = exec_hdr (abfd);
567
923f08ff 568 obj_textsec (abfd)->size = N_TXTSIZE (*execp);
f7c33884 569 /* Data and bss are already filled in since they're so standard. */
252b5132 570
f7c33884 571 /* The virtual memory addresses of the sections. */
923f08ff
AM		 572 obj_textsec (abfd)->vma = N_TXTADDR (*execp);
573 obj_datasec (abfd)->vma = N_DATADDR (*execp);
574 obj_bsssec (abfd)->vma = N_BSSADDR (*execp);
252b5132 575
f7c33884 576 /* The file offsets of the sections. */
923f08ff
AM		 577 obj_textsec (abfd)->filepos = N_TXTOFF (*execp);
578 obj_datasec (abfd)->filepos = N_DATOFF (*execp);
252b5132 579
f7c33884 580 /* The file offsets of the relocation info. */
923f08ff
AM		 581 obj_textsec (abfd)->rel_filepos = N_TRELOFF (*execp);
582 obj_datasec (abfd)->rel_filepos = N_DRELOFF (*execp);
252b5132
RH		 583
584 /* The file offsets of the string table and symbol table. */
585 obj_str_filepos (abfd) = N_STROFF (*execp);
586 obj_sym_filepos (abfd) = N_SYMOFF (*execp);
587
588 /* Determine the architecture and machine type of the object file. */
923f08ff
AM		 589 switch (N_MACHTYPE (*exec_hdr (abfd)))
590 {
591 default:
592 abfd->obj_arch = bfd_arch_obscure;
593 break;
594 }
252b5132 595
923f08ff
AM		 596 adata (abfd)->page_size = TARGET_PAGE_SIZE;
597 adata (abfd)->segment_size = SEGMENT_SIZE;
598 adata (abfd)->exec_bytes_size = EXEC_BYTES_SIZE;
252b5132
RH		 599
600 return abfd->xvec;
601
602 /* The architecture is encoded in various ways in various a.out variants,
603 or is not encoded at all in some of them. The relocation size depends
604 on the architecture and the a.out variant. Finally, the return value
605 is the bfd_target vector in use. If an error occurs, return zero and
606 set bfd_error to the appropriate error code.
607
608 Formats such as b.out, which have additional fields in the a.out
609 header, should cope with them in this callback as well. */
610#endif /* DOCUMENTATION */
611
beb0d161 612 result = (*callback_to_real_object_p) (abfd);
252b5132
RH		 613
614 /* Now that the segment addresses have been worked out, take a better
615 guess at whether the file is executable. If the entry point
616 is within the text segment, assume it is. (This makes files
617 executable even if their entry point address is 0, as long as
618 their text starts at zero.).
619
620 This test had to be changed to deal with systems where the text segment
621 runs at a different location than the default. The problem is that the
622 entry address can appear to be outside the text segment, thus causing an
623 erroneous conclusion that the file isn't executable.
624
625 To fix this, we now accept any non-zero entry point as an indication of
626 executability. This will work most of the time, since only the linker
0ef5a5bd 627 sets the entry point, and that is likely to be non-zero for most systems. */
252b5132
RH		 628
629 if (execp->a_entry != 0
923f08ff
AM		 630 || (execp->a_entry >= obj_textsec (abfd)->vma
631 && execp->a_entry < (obj_textsec (abfd)->vma
eea6121a 632 + obj_textsec (abfd)->size)))
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
116c20d2 682 rawptr = 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:
789 case bfd_mach_mips16:
790 case bfd_mach_mipsisa32:
af7ee8bf 791 case bfd_mach_mipsisa32r2:
923f08ff
AM		 792 case bfd_mach_mips5:
793 case bfd_mach_mipsisa64:
5f74bc13 794 case bfd_mach_mipsisa64r2:
923f08ff
AM		 795 case bfd_mach_mips_sb1:
796 /* FIXME: These should be MIPS3, MIPS4, MIPS16, MIPS32, etc. */
797 arch_flags = M_MIPS2;
798 break;
799 default:
800 arch_flags = M_UNKNOWN;
801 break;
802 }
803 break;
804
805 case bfd_arch_ns32k:
806 switch (machine)
807 {
808 case 0: arch_flags = M_NS32532; break;
809 case 32032: arch_flags = M_NS32032; break;
810 case 32532: arch_flags = M_NS32532; break;
811 default: arch_flags = M_UNKNOWN; break;
812 }
813 break;
252b5132 814
923f08ff 815 case bfd_arch_vax:
b34976b6 816 *unknown = FALSE;
923f08ff 817 break;
06c15ad7 818
923f08ff
AM		 819 case bfd_arch_cris:
820 if (machine == 0 || machine == 255)
821 arch_flags = M_CRIS;
822 break;
823
727e493d
MK		 824 case bfd_arch_m88k:
825 *unknown = FALSE;
826 break;
827
923f08ff
AM		 828 default:
829 arch_flags = M_UNKNOWN;
830 }
252b5132
RH		 831
832 if (arch_flags != M_UNKNOWN)
b34976b6 833 *unknown = FALSE;
252b5132
RH		 834
835 return arch_flags;
836}
837
252b5132
RH		 838/*
839FUNCTION
840 aout_@var{size}_set_arch_mach
841
842SYNOPSIS
b34976b6 843 bfd_boolean aout_@var{size}_set_arch_mach,
252b5132
RH		 844 (bfd *,
845 enum bfd_architecture arch,
116c20d2 846 unsigned long machine);
252b5132
RH		 847
848DESCRIPTION
849 Set the architecture and the machine of the BFD @var{abfd} to the
850 values @var{arch} and @var{machine}. Verify that @var{abfd}'s format
851 can support the architecture required.
852*/
853
b34976b6 854bfd_boolean
116c20d2
NC		 855NAME (aout, set_arch_mach) (bfd *abfd,
856 enum bfd_architecture arch,
857 unsigned long machine)
252b5132
RH		 858{
859 if (! bfd_default_set_arch_mach (abfd, arch, machine))
b34976b6 860 return FALSE;
252b5132
RH		 861
862 if (arch != bfd_arch_unknown)
863 {
b34976b6 864 bfd_boolean unknown;
252b5132 865
116c20d2 866 NAME (aout, machine_type) (arch, machine, &unknown);
252b5132 867 if (unknown)
b34976b6 868 return FALSE;
252b5132
RH		 869 }
870
f7c33884 871 /* Determine the size of a relocation entry. */
923f08ff
AM		 872 switch (arch)
873 {
874 case bfd_arch_sparc:
923f08ff
AM		 875 case bfd_arch_mips:
876 obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE;
877 break;
878 default:
879 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
880 break;
881 }
252b5132 882
923f08ff 883 return (*aout_backend_info (abfd)->set_sizes) (abfd);
252b5132
RH		 884}
885
886static void
116c20d2 887adjust_o_magic (bfd *abfd, struct internal_exec *execp)
252b5132
RH		 888{
889 file_ptr pos = adata (abfd).exec_bytes_size;
890 bfd_vma vma = 0;
891 int pad = 0;
892
893 /* Text. */
923f08ff
AM		 894 obj_textsec (abfd)->filepos = pos;
895 if (!obj_textsec (abfd)->user_set_vma)
896 obj_textsec (abfd)->vma = vma;
252b5132 897 else
923f08ff 898 vma = obj_textsec (abfd)->vma;
252b5132 899
eea6121a
AM		 900 pos += obj_textsec (abfd)->size;
901 vma += obj_textsec (abfd)->size;
252b5132
RH		 902
903 /* Data. */
923f08ff 904 if (!obj_datasec (abfd)->user_set_vma)
252b5132 905 {
eea6121a 906 obj_textsec (abfd)->size += pad;
252b5132
RH		 907 pos += pad;
908 vma += pad;
923f08ff 909 obj_datasec (abfd)->vma = vma;
252b5132
RH		 910 }
911 else
923f08ff
AM		 912 vma = obj_datasec (abfd)->vma;
913 obj_datasec (abfd)->filepos = pos;
eea6121a
AM		 914 pos += obj_datasec (abfd)->size;
915 vma += obj_datasec (abfd)->size;
252b5132
RH		 916
917 /* BSS. */
923f08ff 918 if (!obj_bsssec (abfd)->user_set_vma)
252b5132 919 {
eea6121a 920 obj_datasec (abfd)->size += pad;
252b5132
RH		 921 pos += pad;
922 vma += pad;
923f08ff 923 obj_bsssec (abfd)->vma = vma;
252b5132
RH		 924 }
925 else
926 {
08da05b0 927 /* The VMA of the .bss section is set by the VMA of the
252b5132
RH		 928 .data section plus the size of the .data section. We may
929 need to add padding bytes to make this true. */
930 pad = obj_bsssec (abfd)->vma - vma;
931 if (pad > 0)
932 {
eea6121a 933 obj_datasec (abfd)->size += pad;
252b5132
RH		 934 pos += pad;
935 }
936 }
923f08ff 937 obj_bsssec (abfd)->filepos = pos;
252b5132
RH		 938
939 /* Fix up the exec header. */
eea6121a
AM		 940 execp->a_text = obj_textsec (abfd)->size;
941 execp->a_data = obj_datasec (abfd)->size;
942 execp->a_bss = obj_bsssec (abfd)->size;
252b5132
RH		 943 N_SET_MAGIC (*execp, OMAGIC);
944}
945
946static void
116c20d2 947adjust_z_magic (bfd *abfd, struct internal_exec *execp)
252b5132
RH		 948{
949 bfd_size_type data_pad, text_pad;
950 file_ptr text_end;
dc810e39 951 const struct aout_backend_data *abdp;
116c20d2
NC		 952 /* TRUE if text includes exec header. */
953 bfd_boolean ztih;
0ef5a5bd 954
252b5132
RH		 955 abdp = aout_backend_info (abfd);
956
957 /* Text. */
958 ztih = (abdp != NULL
959 && (abdp->text_includes_header
960 || obj_aout_subformat (abfd) == q_magic_format));
923f08ff
AM		 961 obj_textsec (abfd)->filepos = (ztih
962 ? adata (abfd).exec_bytes_size
963 : adata (abfd).zmagic_disk_block_size);
964 if (! obj_textsec (abfd)->user_set_vma)
252b5132
RH		 965 {
966 /* ?? Do we really need to check for relocs here? */
923f08ff
AM		 967 obj_textsec (abfd)->vma = ((abfd->flags & HAS_RELOC)
968 ? 0
969 : (ztih
970 ? (abdp->default_text_vma
971 + adata (abfd).exec_bytes_size)
972 : abdp->default_text_vma));
252b5132
RH		 973 text_pad = 0;
974 }
975 else
976 {
977 /* The .text section is being loaded at an unusual address. We
978 may need to pad it such that the .data section starts at a page
979 boundary. */
980 if (ztih)
981 text_pad = ((obj_textsec (abfd)->filepos - obj_textsec (abfd)->vma)
982 & (adata (abfd).page_size - 1));
983 else
984 text_pad = ((- obj_textsec (abfd)->vma)
985 & (adata (abfd).page_size - 1));
986 }
987
988 /* Find start of data. */
989 if (ztih)
990 {
eea6121a 991 text_end = obj_textsec (abfd)->filepos + obj_textsec (abfd)->size;
252b5132
RH		 992 text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end;
993 }
994 else
995 {
996 /* Note that if page_size == zmagic_disk_block_size, then
997 filepos == page_size, and this case is the same as the ztih
998 case. */
eea6121a 999 text_end = obj_textsec (abfd)->size;
252b5132
RH		 1000 text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end;
1001 text_end += obj_textsec (abfd)->filepos;
1002 }
eea6121a 1003 obj_textsec (abfd)->size += text_pad;
252b5132
RH		 1004 text_end += text_pad;
1005
1006 /* Data. */
923f08ff 1007 if (!obj_datasec (abfd)->user_set_vma)
252b5132
RH		 1008 {
1009 bfd_vma vma;
eea6121a 1010 vma = obj_textsec (abfd)->vma + obj_textsec (abfd)->size;
923f08ff 1011 obj_datasec (abfd)->vma = BFD_ALIGN (vma, adata (abfd).segment_size);
252b5132
RH		 1012 }
1013 if (abdp && abdp->zmagic_mapped_contiguous)
1014 {
dee0a8f4
NC		 1015 asection * text = obj_textsec (abfd);
1016 asection * data = obj_datasec (abfd);
1017
eea6121a 1018 text_pad = data->vma - (text->vma + text->size);
dee0a8f4
NC		 1019 /* Only pad the text section if the data
1020 section is going to be placed after it. */
1021 if (text_pad > 0)
eea6121a 1022 text->size += text_pad;
252b5132 1023 }
923f08ff 1024 obj_datasec (abfd)->filepos = (obj_textsec (abfd)->filepos
eea6121a 1025 + obj_textsec (abfd)->size);
0ef5a5bd 1026
252b5132 1027 /* Fix up exec header while we're at it. */
eea6121a 1028 execp->a_text = obj_textsec (abfd)->size;
252b5132 1029 if (ztih && (!abdp || (abdp && !abdp->exec_header_not_counted)))
923f08ff 1030 execp->a_text += adata (abfd).exec_bytes_size;
252b5132
RH		 1031 if (obj_aout_subformat (abfd) == q_magic_format)
1032 N_SET_MAGIC (*execp, QMAGIC);
1033 else
1034 N_SET_MAGIC (*execp, ZMAGIC);
1035
1036 /* Spec says data section should be rounded up to page boundary. */
eea6121a
AM		 1037 obj_datasec (abfd)->size
1038 = align_power (obj_datasec (abfd)->size,
923f08ff 1039 obj_bsssec (abfd)->alignment_power);
eea6121a 1040 execp->a_data = BFD_ALIGN (obj_datasec (abfd)->size,
923f08ff 1041 adata (abfd).page_size);
eea6121a 1042 data_pad = execp->a_data - obj_datasec (abfd)->size;
252b5132
RH		 1043
1044 /* BSS. */
923f08ff
AM		 1045 if (!obj_bsssec (abfd)->user_set_vma)
1046 obj_bsssec (abfd)->vma = (obj_datasec (abfd)->vma
eea6121a 1047 + obj_datasec (abfd)->size);
252b5132
RH		 1048 /* If the BSS immediately follows the data section and extra space
1049 in the page is left after the data section, fudge data
1050 in the header so that the bss section looks smaller by that
1051 amount. We'll start the bss section there, and lie to the OS.
1052 (Note that a linker script, as well as the above assignment,
1053 could have explicitly set the BSS vma to immediately follow
1054 the data section.) */
923f08ff 1055 if (align_power (obj_bsssec (abfd)->vma, obj_bsssec (abfd)->alignment_power)
eea6121a
AM		 1056 == obj_datasec (abfd)->vma + obj_datasec (abfd)->size)
1057 execp->a_bss = (data_pad > obj_bsssec (abfd)->size
1058 ? 0 : obj_bsssec (abfd)->size - data_pad);
252b5132 1059 else
eea6121a 1060 execp->a_bss = obj_bsssec (abfd)->size;
252b5132
RH		 1061}
1062
1063static void
116c20d2 1064adjust_n_magic (bfd *abfd, struct internal_exec *execp)
252b5132 1065{
923f08ff 1066 file_ptr pos = adata (abfd).exec_bytes_size;
252b5132
RH		 1067 bfd_vma vma = 0;
1068 int pad;
0ef5a5bd 1069
252b5132 1070 /* Text. */
923f08ff
AM		 1071 obj_textsec (abfd)->filepos = pos;
1072 if (!obj_textsec (abfd)->user_set_vma)
1073 obj_textsec (abfd)->vma = vma;
252b5132 1074 else
923f08ff 1075 vma = obj_textsec (abfd)->vma;
eea6121a
AM		 1076 pos += obj_textsec (abfd)->size;
1077 vma += obj_textsec (abfd)->size;
252b5132
RH		 1078
1079 /* Data. */
923f08ff
AM		 1080 obj_datasec (abfd)->filepos = pos;
1081 if (!obj_datasec (abfd)->user_set_vma)
1082 obj_datasec (abfd)->vma = BFD_ALIGN (vma, adata (abfd).segment_size);
1083 vma = obj_datasec (abfd)->vma;
0ef5a5bd 1084
252b5132 1085 /* Since BSS follows data immediately, see if it needs alignment. */
eea6121a 1086 vma += obj_datasec (abfd)->size;
923f08ff 1087 pad = align_power (vma, obj_bsssec (abfd)->alignment_power) - vma;
eea6121a
AM		 1088 obj_datasec (abfd)->size += pad;
1089 pos += obj_datasec (abfd)->size;
252b5132
RH		 1090
1091 /* BSS. */
923f08ff
AM		 1092 if (!obj_bsssec (abfd)->user_set_vma)
1093 obj_bsssec (abfd)->vma = vma;
252b5132 1094 else
923f08ff 1095 vma = obj_bsssec (abfd)->vma;
252b5132
RH		 1096
1097 /* Fix up exec header. */
eea6121a
AM		 1098 execp->a_text = obj_textsec (abfd)->size;
1099 execp->a_data = obj_datasec (abfd)->size;
1100 execp->a_bss = obj_bsssec (abfd)->size;
252b5132
RH		 1101 N_SET_MAGIC (*execp, NMAGIC);
1102}
1103
b34976b6 1104bfd_boolean
116c20d2
NC		 1105NAME (aout, adjust_sizes_and_vmas) (bfd *abfd,
1106 bfd_size_type *text_size,
1107 file_ptr *text_end ATTRIBUTE_UNUSED)
252b5132
RH		 1108{
1109 struct internal_exec *execp = exec_hdr (abfd);
1110
116c20d2 1111 if (! NAME (aout, make_sections) (abfd))
b34976b6 1112 return FALSE;
252b5132 1113
923f08ff 1114 if (adata (abfd).magic != undecided_magic)
b34976b6 1115 return TRUE;
252b5132 1116
eea6121a
AM		 1117 obj_textsec (abfd)->size =
1118 align_power (obj_textsec (abfd)->size,
923f08ff 1119 obj_textsec (abfd)->alignment_power);
252b5132 1120
eea6121a 1121 *text_size = obj_textsec (abfd)->size;
252b5132
RH		 1122 /* Rule (heuristic) for when to pad to a new page. Note that there
1123 are (at least) two ways demand-paged (ZMAGIC) files have been
1124 handled. Most Berkeley-based systems start the text segment at
1125 (TARGET_PAGE_SIZE). However, newer versions of SUNOS start the text
1126 segment right after the exec header; the latter is counted in the
1127 text segment size, and is paged in by the kernel with the rest of
0ef5a5bd 1128 the text. */
252b5132
RH		 1129
1130 /* This perhaps isn't the right way to do this, but made it simpler for me
1131 to understand enough to implement it. Better would probably be to go
1132 right from BFD flags to alignment/positioning characteristics. But the
1133 old code was sloppy enough about handling the flags, and had enough
1134 other magic, that it was a little hard for me to understand. I think
1135 I understand it better now, but I haven't time to do the cleanup this
1136 minute. */
1137
1138 if (abfd->flags & D_PAGED)
1139 /* Whether or not WP_TEXT is set -- let D_PAGED override. */
923f08ff 1140 adata (abfd).magic = z_magic;
252b5132 1141 else if (abfd->flags & WP_TEXT)
923f08ff 1142 adata (abfd).magic = n_magic;
252b5132 1143 else
923f08ff 1144 adata (abfd).magic = o_magic;
252b5132
RH		 1145
1146#ifdef BFD_AOUT_DEBUG /* requires gcc2 */
1147#if __GNUC__ >= 2
1148 fprintf (stderr, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n",
1149 ({ char *str;
923f08ff
AM		 1150 switch (adata (abfd).magic)
1151 {
1152 case n_magic: str = "NMAGIC"; break;
1153 case o_magic: str = "OMAGIC"; break;
1154 case z_magic: str = "ZMAGIC"; break;
1155 default: abort ();
1156 }
252b5132
RH		 1157 str;
1158 }),
eea6121a 1159 obj_textsec (abfd)->vma, obj_textsec (abfd)->size,
923f08ff 1160 obj_textsec (abfd)->alignment_power,
eea6121a 1161 obj_datasec (abfd)->vma, obj_datasec (abfd)->size,
923f08ff 1162 obj_datasec (abfd)->alignment_power,
eea6121a 1163 obj_bsssec (abfd)->vma, obj_bsssec (abfd)->size,
923f08ff 1164 obj_bsssec (abfd)->alignment_power);
252b5132
RH		 1165#endif
1166#endif
1167
923f08ff 1168 switch (adata (abfd).magic)
252b5132
RH		 1169 {
1170 case o_magic:
1171 adjust_o_magic (abfd, execp);
1172 break;
1173 case z_magic:
1174 adjust_z_magic (abfd, execp);
1175 break;
1176 case n_magic:
1177 adjust_n_magic (abfd, execp);
1178 break;
1179 default:
1180 abort ();
1181 }
1182
1183#ifdef BFD_AOUT_DEBUG
1184 fprintf (stderr, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n",
eea6121a 1185 obj_textsec (abfd)->vma, obj_textsec (abfd)->size,
923f08ff 1186 obj_textsec (abfd)->filepos,
eea6121a 1187 obj_datasec (abfd)->vma, obj_datasec (abfd)->size,
923f08ff 1188 obj_datasec (abfd)->filepos,
eea6121a 1189 obj_bsssec (abfd)->vma, obj_bsssec (abfd)->size);
252b5132
RH		 1190#endif
1191
b34976b6 1192 return TRUE;
252b5132
RH		 1193}
1194
1195/*
1196FUNCTION
1197 aout_@var{size}_new_section_hook
1198
1199SYNOPSIS
b34976b6 1200 bfd_boolean aout_@var{size}_new_section_hook,
252b5132 1201 (bfd *abfd,
116c20d2 1202 asection *newsect);
252b5132
RH		 1203
1204DESCRIPTION
1205 Called by the BFD in response to a @code{bfd_make_section}
1206 request.
1207*/
b34976b6 1208bfd_boolean
116c20d2 1209NAME (aout, new_section_hook) (bfd *abfd, asection *newsect)
252b5132 1210{
f7c33884 1211 /* Align to double at least. */
923f08ff 1212 newsect->alignment_power = bfd_get_arch_info (abfd)->section_align_power;
252b5132 1213
252b5132 1214 if (bfd_get_format (abfd) == bfd_object)
f7c33884
NC		 1215 {
1216 if (obj_textsec (abfd) == NULL && !strcmp (newsect->name, ".text"))
1217 {
1218 obj_textsec (abfd)= newsect;
1219 newsect->target_index = N_TEXT;
f7c33884 1220 }
f592407e 1221 else if (obj_datasec (abfd) == NULL && !strcmp (newsect->name, ".data"))
f7c33884
NC		 1222 {
1223 obj_datasec (abfd) = newsect;
1224 newsect->target_index = N_DATA;
f7c33884 1225 }
f592407e 1226 else if (obj_bsssec (abfd) == NULL && !strcmp (newsect->name, ".bss"))
f7c33884
NC		 1227 {
1228 obj_bsssec (abfd) = newsect;
1229 newsect->target_index = N_BSS;
f7c33884
NC		 1230 }
1231 }
252b5132 1232
f7c33884 1233 /* We allow more than three sections internally. */
f592407e 1234 return _bfd_generic_new_section_hook (abfd, newsect);
252b5132
RH		 1235}
1236
b34976b6 1237bfd_boolean
116c20d2
NC		 1238NAME (aout, set_section_contents) (bfd *abfd,
1239 sec_ptr section,
1240 const void * location,
1241 file_ptr offset,
1242 bfd_size_type count)
252b5132
RH		 1243{
1244 file_ptr text_end;
1245 bfd_size_type text_size;
1246
1247 if (! abfd->output_has_begun)
1248 {
116c20d2 1249 if (! NAME (aout, adjust_sizes_and_vmas) (abfd, &text_size, &text_end))
b34976b6 1250 return FALSE;
252b5132
RH		 1251 }
1252
1253 if (section == obj_bsssec (abfd))
1254 {
1255 bfd_set_error (bfd_error_no_contents);
b34976b6 1256 return FALSE;
252b5132
RH		 1257 }
1258
1259 if (section != obj_textsec (abfd)
1260 && section != obj_datasec (abfd))
1261 {
e6af3a53
NC		 1262 if (aout_section_merge_with_text_p (abfd, section))
1263 section->filepos = obj_textsec (abfd)->filepos +
1264 (section->vma - obj_textsec (abfd)->vma);
1265 else
1266 {
1267 (*_bfd_error_handler)
1268 (_("%s: can not represent section `%s' in a.out object file format"),
1269 bfd_get_filename (abfd), bfd_get_section_name (abfd, section));
1270 bfd_set_error (bfd_error_nonrepresentable_section);
1271 return FALSE;
1272 }
252b5132
RH		 1273 }
1274
1275 if (count != 0)
1276 {
1277 if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0
dc810e39 1278 || bfd_bwrite (location, count, abfd) != count)
b34976b6 1279 return FALSE;
252b5132
RH		 1280 }
1281
b34976b6 1282 return TRUE;
252b5132
RH		 1283}
1284\f
1285/* Read the external symbols from an a.out file. */
1286
b34976b6 1287static bfd_boolean
116c20d2 1288aout_get_external_symbols (bfd *abfd)
252b5132 1289{
116c20d2 1290 if (obj_aout_external_syms (abfd) == NULL)
252b5132
RH		 1291 {
1292 bfd_size_type count;
1293 struct external_nlist *syms;
dc810e39 1294 bfd_size_type amt;
252b5132
RH		 1295
1296 count = exec_hdr (abfd)->a_syms / EXTERNAL_NLIST_SIZE;
6b8f0fd5
MS		 1297 if (count == 0)
1298 return TRUE; /* Nothing to do. */
252b5132
RH		 1299
1300#ifdef USE_MMAP
82e51918
AM		 1301 if (! bfd_get_file_window (abfd, obj_sym_filepos (abfd),
1302 exec_hdr (abfd)->a_syms,
b34976b6
AM		 1303 &obj_aout_sym_window (abfd), TRUE))
1304 return FALSE;
252b5132
RH		 1305 syms = (struct external_nlist *) obj_aout_sym_window (abfd).data;
1306#else
1307 /* We allocate using malloc to make the values easy to free
1308 later on. If we put them on the objalloc it might not be
1309 possible to free them. */
116c20d2 1310 syms = bfd_malloc (count * EXTERNAL_NLIST_SIZE);
6b8f0fd5 1311 if (syms == NULL)
b34976b6 1312 return FALSE;
252b5132 1313
dc810e39 1314 amt = exec_hdr (abfd)->a_syms;
252b5132 1315 if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
dc810e39 1316 || bfd_bread (syms, amt, abfd) != amt)
252b5132
RH		 1317 {
1318 free (syms);
b34976b6 1319 return FALSE;
252b5132
RH		 1320 }
1321#endif
1322
1323 obj_aout_external_syms (abfd) = syms;
1324 obj_aout_external_sym_count (abfd) = count;
1325 }
0ef5a5bd 1326
252b5132
RH		 1327 if (obj_aout_external_strings (abfd) == NULL
1328 && exec_hdr (abfd)->a_syms != 0)
1329 {
1330 unsigned char string_chars[BYTES_IN_WORD];
1331 bfd_size_type stringsize;
1332 char *strings;
dc810e39 1333 bfd_size_type amt = BYTES_IN_WORD;
252b5132
RH		 1334
1335 /* Get the size of the strings. */
1336 if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0
116c20d2 1337 || bfd_bread ((void *) string_chars, amt, abfd) != amt)
b34976b6 1338 return FALSE;
252b5132
RH		 1339 stringsize = GET_WORD (abfd, string_chars);
1340
1341#ifdef USE_MMAP
82e51918 1342 if (! bfd_get_file_window (abfd, obj_str_filepos (abfd), stringsize,
b34976b6
AM		 1343 &obj_aout_string_window (abfd), TRUE))
1344 return FALSE;
252b5132
RH		 1345 strings = (char *) obj_aout_string_window (abfd).data;
1346#else
116c20d2 1347 strings = bfd_malloc (stringsize + 1);
252b5132 1348 if (strings == NULL)
b34976b6 1349 return FALSE;
252b5132
RH		 1350
1351 /* Skip space for the string count in the buffer for convenience
1352 when using indexes. */
dc810e39
AM		 1353 amt = stringsize - BYTES_IN_WORD;
1354 if (bfd_bread (strings + BYTES_IN_WORD, amt, abfd) != amt)
252b5132
RH		 1355 {
1356 free (strings);
b34976b6 1357 return FALSE;
252b5132
RH		 1358 }
1359#endif
1360
1361 /* Ensure that a zero index yields an empty string. */
1362 strings[0] = '\0';
1363
1364 strings[stringsize - 1] = 0;
1365
1366 obj_aout_external_strings (abfd) = strings;
1367 obj_aout_external_string_size (abfd) = stringsize;
1368 }
1369
b34976b6 1370 return TRUE;
252b5132
RH		 1371}
1372
1373/* Translate an a.out symbol into a BFD symbol. The desc, other, type
1374 and symbol->value fields of CACHE_PTR will be set from the a.out
1375 nlist structure. This function is responsible for setting
1376 symbol->flags and symbol->section, and adjusting symbol->value. */
1377
b34976b6 1378static bfd_boolean
116c20d2 1379translate_from_native_sym_flags (bfd *abfd, aout_symbol_type *cache_ptr)
252b5132
RH		 1380{
1381 flagword visible;
1382
1383 if ((cache_ptr->type & N_STAB) != 0
1384 || cache_ptr->type == N_FN)
1385 {
1386 asection *sec;
1387
1388 /* This is a debugging symbol. */
252b5132
RH		 1389 cache_ptr->symbol.flags = BSF_DEBUGGING;
1390
1391 /* Work out the symbol section. */
1392 switch (cache_ptr->type & N_TYPE)
1393 {
1394 case N_TEXT:
1395 case N_FN:
1396 sec = obj_textsec (abfd);
1397 break;
1398 case N_DATA:
1399 sec = obj_datasec (abfd);
1400 break;
1401 case N_BSS:
1402 sec = obj_bsssec (abfd);
1403 break;
1404 default:
1405 case N_ABS:
1406 sec = bfd_abs_section_ptr;
1407 break;
1408 }
1409
1410 cache_ptr->symbol.section = sec;
1411 cache_ptr->symbol.value -= sec->vma;
1412
b34976b6 1413 return TRUE;
252b5132
RH		 1414 }
1415
1416 /* Get the default visibility. This does not apply to all types, so
1417 we just hold it in a local variable to use if wanted. */
1418 if ((cache_ptr->type & N_EXT) == 0)
1419 visible = BSF_LOCAL;
1420 else
1421 visible = BSF_GLOBAL;
1422
1423 switch (cache_ptr->type)
1424 {
1425 default:
1426 case N_ABS: case N_ABS | N_EXT:
1427 cache_ptr->symbol.section = bfd_abs_section_ptr;
1428 cache_ptr->symbol.flags = visible;
1429 break;
1430
1431 case N_UNDF | N_EXT:
1432 if (cache_ptr->symbol.value != 0)
1433 {
1434 /* This is a common symbol. */
1435 cache_ptr->symbol.flags = BSF_GLOBAL;
1436 cache_ptr->symbol.section = bfd_com_section_ptr;
1437 }
1438 else
1439 {
1440 cache_ptr->symbol.flags = 0;
1441 cache_ptr->symbol.section = bfd_und_section_ptr;
1442 }
1443 break;
1444
1445 case N_TEXT: case N_TEXT | N_EXT:
1446 cache_ptr->symbol.section = obj_textsec (abfd);
1447 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1448 cache_ptr->symbol.flags = visible;
1449 break;
1450
1451 /* N_SETV symbols used to represent set vectors placed in the
1452 data section. They are no longer generated. Theoretically,
1453 it was possible to extract the entries and combine them with
1454 new ones, although I don't know if that was ever actually
1455 done. Unless that feature is restored, treat them as data
1456 symbols. */
1457 case N_SETV: case N_SETV | N_EXT:
1458 case N_DATA: case N_DATA | N_EXT:
1459 cache_ptr->symbol.section = obj_datasec (abfd);
1460 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1461 cache_ptr->symbol.flags = visible;
1462 break;
1463
1464 case N_BSS: case N_BSS | N_EXT:
1465 cache_ptr->symbol.section = obj_bsssec (abfd);
1466 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1467 cache_ptr->symbol.flags = visible;
1468 break;
1469
1470 case N_SETA: case N_SETA | N_EXT:
1471 case N_SETT: case N_SETT | N_EXT:
1472 case N_SETD: case N_SETD | N_EXT:
1473 case N_SETB: case N_SETB | N_EXT:
1474 {
1475 /* This code is no longer needed. It used to be used to make
1476 the linker handle set symbols, but they are now handled in
1477 the add_symbols routine instead. */
252b5132
RH		 1478 switch (cache_ptr->type & N_TYPE)
1479 {
1480 case N_SETA:
1481 cache_ptr->symbol.section = bfd_abs_section_ptr;
1482 break;
1483 case N_SETT:
1484 cache_ptr->symbol.section = obj_textsec (abfd);
1485 break;
1486 case N_SETD:
1487 cache_ptr->symbol.section = obj_datasec (abfd);
1488 break;
1489 case N_SETB:
1490 cache_ptr->symbol.section = obj_bsssec (abfd);
1491 break;
1492 }
1493
1494 cache_ptr->symbol.flags |= BSF_CONSTRUCTOR;
1495 }
1496 break;
1497
1498 case N_WARNING:
1499 /* This symbol is the text of a warning message. The next
1500 symbol is the symbol to associate the warning with. If a
1501 reference is made to that symbol, a warning is issued. */
1502 cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_WARNING;
1503 cache_ptr->symbol.section = bfd_abs_section_ptr;
1504 break;
1505
1506 case N_INDR: case N_INDR | N_EXT:
1507 /* An indirect symbol. This consists of two symbols in a row.
1508 The first symbol is the name of the indirection. The second
1509 symbol is the name of the target. A reference to the first
1510 symbol becomes a reference to the second. */
1511 cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_INDIRECT | visible;
1512 cache_ptr->symbol.section = bfd_ind_section_ptr;
1513 break;
1514
1515 case N_WEAKU:
1516 cache_ptr->symbol.section = bfd_und_section_ptr;
1517 cache_ptr->symbol.flags = BSF_WEAK;
1518 break;
1519
1520 case N_WEAKA:
1521 cache_ptr->symbol.section = bfd_abs_section_ptr;
1522 cache_ptr->symbol.flags = BSF_WEAK;
1523 break;
1524
1525 case N_WEAKT:
1526 cache_ptr->symbol.section = obj_textsec (abfd);
1527 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1528 cache_ptr->symbol.flags = BSF_WEAK;
1529 break;
1530
1531 case N_WEAKD:
1532 cache_ptr->symbol.section = obj_datasec (abfd);
1533 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1534 cache_ptr->symbol.flags = BSF_WEAK;
1535 break;
1536
1537 case N_WEAKB:
1538 cache_ptr->symbol.section = obj_bsssec (abfd);
1539 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1540 cache_ptr->symbol.flags = BSF_WEAK;
1541 break;
1542 }
1543
b34976b6 1544 return TRUE;
252b5132
RH		 1545}
1546
1547/* Set the fields of SYM_POINTER according to CACHE_PTR. */
1548
b34976b6 1549static bfd_boolean
116c20d2
NC		 1550translate_to_native_sym_flags (bfd *abfd,
1551 asymbol *cache_ptr,
1552 struct external_nlist *sym_pointer)
252b5132
RH		 1553{
1554 bfd_vma value = cache_ptr->value;
1555 asection *sec;
1556 bfd_vma off;
1557
1558 /* Mask out any existing type bits in case copying from one section
1559 to another. */
1560 sym_pointer->e_type[0] &= ~N_TYPE;
1561
1562 sec = bfd_get_section (cache_ptr);
1563 off = 0;
1564
1565 if (sec == NULL)
1566 {
1567 /* This case occurs, e.g., for the *DEBUG* section of a COFF
1568 file. */
1569 (*_bfd_error_handler)
1570 (_("%s: can not represent section for symbol `%s' in a.out object file format"),
0ef5a5bd 1571 bfd_get_filename (abfd),
252b5132
RH		 1572 cache_ptr->name != NULL ? cache_ptr->name : _("*unknown*"));
1573 bfd_set_error (bfd_error_nonrepresentable_section);
b34976b6 1574 return FALSE;
252b5132
RH		 1575 }
1576
1577 if (sec->output_section != NULL)
1578 {
1579 off = sec->output_offset;
1580 sec = sec->output_section;
1581 }
1582
1583 if (bfd_is_abs_section (sec))
1584 sym_pointer->e_type[0] |= N_ABS;
1585 else if (sec == obj_textsec (abfd))
1586 sym_pointer->e_type[0] |= N_TEXT;
1587 else if (sec == obj_datasec (abfd))
1588 sym_pointer->e_type[0] |= N_DATA;
1589 else if (sec == obj_bsssec (abfd))
1590 sym_pointer->e_type[0] |= N_BSS;
1591 else if (bfd_is_und_section (sec))
1592 sym_pointer->e_type[0] = N_UNDF | N_EXT;
1593 else if (bfd_is_ind_section (sec))
1594 sym_pointer->e_type[0] = N_INDR;
1595 else if (bfd_is_com_section (sec))
1596 sym_pointer->e_type[0] = N_UNDF | N_EXT;
1597 else
1598 {
e6af3a53
NC		 1599 if (aout_section_merge_with_text_p (abfd, sec))
1600 sym_pointer->e_type[0] |= N_TEXT;
1601 else
1602 {
1603 (*_bfd_error_handler)
1604 (_("%s: can not represent section `%s' in a.out object file format"),
1605 bfd_get_filename (abfd), bfd_get_section_name (abfd, sec));
1606 bfd_set_error (bfd_error_nonrepresentable_section);
1607 return FALSE;
1608 }
252b5132
RH		 1609 }
1610
f7c33884 1611 /* Turn the symbol from section relative to absolute again. */
252b5132
RH		 1612 value += sec->vma + off;
1613
1614 if ((cache_ptr->flags & BSF_WARNING) != 0)
1615 sym_pointer->e_type[0] = N_WARNING;
1616
1617 if ((cache_ptr->flags & BSF_DEBUGGING) != 0)
1618 sym_pointer->e_type[0] = ((aout_symbol_type *) cache_ptr)->type;
1619 else if ((cache_ptr->flags & BSF_GLOBAL) != 0)
1620 sym_pointer->e_type[0] |= N_EXT;
930d924d
L		 1621 else if ((cache_ptr->flags & BSF_LOCAL) != 0)
1622 sym_pointer->e_type[0] &= ~N_EXT;
252b5132
RH		 1623
1624 if ((cache_ptr->flags & BSF_CONSTRUCTOR) != 0)
1625 {
1626 int type = ((aout_symbol_type *) cache_ptr)->type;
f7c33884 1627
252b5132
RH		 1628 switch (type)
1629 {
1630 case N_ABS: type = N_SETA; break;
1631 case N_TEXT: type = N_SETT; break;
1632 case N_DATA: type = N_SETD; break;
1633 case N_BSS: type = N_SETB; break;
1634 }
1635 sym_pointer->e_type[0] = type;
1636 }
1637
1638 if ((cache_ptr->flags & BSF_WEAK) != 0)
1639 {
1640 int type;
1641
1642 switch (sym_pointer->e_type[0] & N_TYPE)
1643 {
1644 default:
1645 case N_ABS: type = N_WEAKA; break;
1646 case N_TEXT: type = N_WEAKT; break;
1647 case N_DATA: type = N_WEAKD; break;
1648 case N_BSS: type = N_WEAKB; break;
1649 case N_UNDF: type = N_WEAKU; break;
1650 }
1651 sym_pointer->e_type[0] = type;
1652 }
1653
923f08ff 1654 PUT_WORD (abfd, value, sym_pointer->e_value);
252b5132 1655
b34976b6 1656 return TRUE;
252b5132
RH		 1657}
1658\f
0ef5a5bd 1659/* Native-level interface to symbols. */
252b5132
RH		 1660
1661asymbol *
116c20d2 1662NAME (aout, make_empty_symbol) (bfd *abfd)
252b5132 1663{
dc810e39 1664 bfd_size_type amt = sizeof (aout_symbol_type);
116c20d2
NC		 1665
1666 aout_symbol_type *new = bfd_zalloc (abfd, amt);
252b5132
RH		 1667 if (!new)
1668 return NULL;
1669 new->symbol.the_bfd = abfd;
1670
1671 return &new->symbol;
1672}
1673
1674/* Translate a set of internal symbols into external symbols. */
1675
b34976b6 1676bfd_boolean
116c20d2
NC		 1677NAME (aout, translate_symbol_table) (bfd *abfd,
1678 aout_symbol_type *in,
1679 struct external_nlist *ext,
1680 bfd_size_type count,
1681 char *str,
1682 bfd_size_type strsize,
1683 bfd_boolean dynamic)
252b5132
RH		 1684{
1685 struct external_nlist *ext_end;
1686
1687 ext_end = ext + count;
1688 for (; ext < ext_end; ext++, in++)
1689 {
1690 bfd_vma x;
1691
1692 x = GET_WORD (abfd, ext->e_strx);
1693 in->symbol.the_bfd = abfd;
1694
1695 /* For the normal symbols, the zero index points at the number
1696 of bytes in the string table but is to be interpreted as the
1697 null string. For the dynamic symbols, the number of bytes in
1698 the string table is stored in the __DYNAMIC structure and the
1699 zero index points at an actual string. */
1700 if (x == 0 && ! dynamic)
1701 in->symbol.name = "";
1702 else if (x < strsize)
1703 in->symbol.name = str + x;
1704 else
b34976b6 1705 return FALSE;
252b5132
RH		 1706
1707 in->symbol.value = GET_SWORD (abfd, ext->e_value);
dc810e39
AM		 1708 in->desc = H_GET_16 (abfd, ext->e_desc);
1709 in->other = H_GET_8 (abfd, ext->e_other);
1710 in->type = H_GET_8 (abfd, ext->e_type);
252b5132
RH		 1711 in->symbol.udata.p = NULL;
1712
1713 if (! translate_from_native_sym_flags (abfd, in))
b34976b6 1714 return FALSE;
252b5132
RH		 1715
1716 if (dynamic)
1717 in->symbol.flags |= BSF_DYNAMIC;
1718 }
1719
b34976b6 1720 return TRUE;
252b5132
RH		 1721}
1722
1723/* We read the symbols into a buffer, which is discarded when this
1724 function exits. We read the strings into a buffer large enough to
0ef5a5bd 1725 hold them all plus all the cached symbol entries. */
252b5132 1726
b34976b6 1727bfd_boolean
116c20d2 1728NAME (aout, slurp_symbol_table) (bfd *abfd)
252b5132
RH		 1729{
1730 struct external_nlist *old_external_syms;
1731 aout_symbol_type *cached;
dc810e39 1732 bfd_size_type cached_size;
252b5132 1733
f7c33884 1734 /* If there's no work to be done, don't do any. */
116c20d2 1735 if (obj_aout_symbols (abfd) != NULL)
b34976b6 1736 return TRUE;
252b5132
RH		 1737
1738 old_external_syms = obj_aout_external_syms (abfd);
1739
1740 if (! aout_get_external_symbols (abfd))
b34976b6 1741 return FALSE;
252b5132 1742
dc810e39 1743 cached_size = obj_aout_external_sym_count (abfd);
87b32780
MS		 1744 if (cached_size == 0)
1745 return TRUE; /* Nothing to do. */
1746
dc810e39 1747 cached_size *= sizeof (aout_symbol_type);
116c20d2 1748 cached = bfd_zmalloc (cached_size);
87b32780 1749 if (cached == NULL)
b34976b6 1750 return FALSE;
252b5132
RH		 1751
1752 /* Convert from external symbol information to internal. */
116c20d2 1753 if (! (NAME (aout, translate_symbol_table)
252b5132
RH		 1754 (abfd, cached,
1755 obj_aout_external_syms (abfd),
1756 obj_aout_external_sym_count (abfd),
1757 obj_aout_external_strings (abfd),
1758 obj_aout_external_string_size (abfd),
b34976b6 1759 FALSE)))
252b5132
RH		 1760 {
1761 free (cached);
b34976b6 1762 return FALSE;
252b5132
RH		 1763 }
1764
1765 bfd_get_symcount (abfd) = obj_aout_external_sym_count (abfd);
1766
1767 obj_aout_symbols (abfd) = cached;
1768
1769 /* It is very likely that anybody who calls this function will not
1770 want the external symbol information, so if it was allocated
1771 because of our call to aout_get_external_symbols, we free it up
1772 right away to save space. */
116c20d2
NC		 1773 if (old_external_syms == NULL
1774 && obj_aout_external_syms (abfd) != NULL)
252b5132
RH		 1775 {
1776#ifdef USE_MMAP
1777 bfd_free_window (&obj_aout_sym_window (abfd));
1778#else
1779 free (obj_aout_external_syms (abfd));
1780#endif
1781 obj_aout_external_syms (abfd) = NULL;
1782 }
1783
b34976b6 1784 return TRUE;
252b5132
RH		 1785}
1786\f
1787/* We use a hash table when writing out symbols so that we only write
1788 out a particular string once. This helps particularly when the
1789 linker writes out stabs debugging entries, because each different
1790 contributing object file tends to have many duplicate stabs
1791 strings.
1792
1793 This hash table code breaks dbx on SunOS 4.1.3, so we don't do it
1794 if BFD_TRADITIONAL_FORMAT is set. */
1795
252b5132
RH		 1796/* Get the index of a string in a strtab, adding it if it is not
1797 already present. */
1798
116c20d2
NC		 1799static inline bfd_size_type
1800add_to_stringtab (bfd *abfd,
1801 struct bfd_strtab_hash *tab,
1802 const char *str,
1803 bfd_boolean copy)
252b5132 1804{
b34976b6 1805 bfd_boolean hash;
252b5132
RH		 1806 bfd_size_type index;
1807
1808 /* An index of 0 always means the empty string. */
1809 if (str == 0 || *str == '\0')
1810 return 0;
1811
1812 /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx
1813 doesn't understand a hashed string table. */
b34976b6 1814 hash = TRUE;
252b5132 1815 if ((abfd->flags & BFD_TRADITIONAL_FORMAT) != 0)
b34976b6 1816 hash = FALSE;
252b5132
RH		 1817
1818 index = _bfd_stringtab_add (tab, str, hash, copy);
1819
1820 if (index != (bfd_size_type) -1)
116c20d2
NC		 1821 /* Add BYTES_IN_WORD to the return value to account for the
1822 space taken up by the string table size. */
1823 index += BYTES_IN_WORD;
252b5132
RH		 1824
1825 return index;
1826}
1827
1828/* Write out a strtab. ABFD is already at the right location in the
1829 file. */
1830
b34976b6 1831static bfd_boolean
116c20d2 1832emit_stringtab (bfd *abfd, struct bfd_strtab_hash *tab)
252b5132
RH		 1833{
1834 bfd_byte buffer[BYTES_IN_WORD];
dc810e39 1835 bfd_size_type amt = BYTES_IN_WORD;
252b5132
RH		 1836
1837 /* The string table starts with the size. */
1838 PUT_WORD (abfd, _bfd_stringtab_size (tab) + BYTES_IN_WORD, buffer);
116c20d2 1839 if (bfd_bwrite ((void *) buffer, amt, abfd) != amt)
b34976b6 1840 return FALSE;
252b5132
RH		 1841
1842 return _bfd_stringtab_emit (abfd, tab);
1843}
1844\f
b34976b6 1845bfd_boolean
116c20d2 1846NAME (aout, write_syms) (bfd *abfd)
252b5132
RH		 1847{
1848 unsigned int count ;
1849 asymbol **generic = bfd_get_outsymbols (abfd);
1850 struct bfd_strtab_hash *strtab;
1851
1852 strtab = _bfd_stringtab_init ();
1853 if (strtab == NULL)
b34976b6 1854 return FALSE;
252b5132
RH		 1855
1856 for (count = 0; count < bfd_get_symcount (abfd); count++)
1857 {
1858 asymbol *g = generic[count];
1859 bfd_size_type indx;
1860 struct external_nlist nsp;
dc810e39 1861 bfd_size_type amt;
252b5132 1862
b34976b6 1863 indx = add_to_stringtab (abfd, strtab, g->name, FALSE);
252b5132
RH		 1864 if (indx == (bfd_size_type) -1)
1865 goto error_return;
1866 PUT_WORD (abfd, indx, (bfd_byte *) nsp.e_strx);
1867
923f08ff 1868 if (bfd_asymbol_flavour (g) == abfd->xvec->flavour)
252b5132 1869 {
923f08ff
AM		 1870 H_PUT_16 (abfd, aout_symbol (g)->desc, nsp.e_desc);
1871 H_PUT_8 (abfd, aout_symbol (g)->other, nsp.e_other);
1872 H_PUT_8 (abfd, aout_symbol (g)->type, nsp.e_type);
252b5132
RH		 1873 }
1874 else
1875 {
dc810e39
AM		 1876 H_PUT_16 (abfd, 0, nsp.e_desc);
1877 H_PUT_8 (abfd, 0, nsp.e_other);
1878 H_PUT_8 (abfd, 0, nsp.e_type);
252b5132
RH		 1879 }
1880
1881 if (! translate_to_native_sym_flags (abfd, g, &nsp))
1882 goto error_return;
1883
dc810e39 1884 amt = EXTERNAL_NLIST_SIZE;
116c20d2 1885 if (bfd_bwrite ((void *) &nsp, amt, abfd) != amt)
252b5132
RH		 1886 goto error_return;
1887
1888 /* NB: `KEEPIT' currently overlays `udata.p', so set this only
1889 here, at the end. */
1890 g->KEEPIT = count;
1891 }
1892
1893 if (! emit_stringtab (abfd, strtab))
1894 goto error_return;
1895
1896 _bfd_stringtab_free (strtab);
1897
b34976b6 1898 return TRUE;
252b5132
RH		 1899
1900error_return:
1901 _bfd_stringtab_free (strtab);
b34976b6 1902 return FALSE;
252b5132 1903}
252b5132
RH		 1904\f
1905long
116c20d2 1906NAME (aout, canonicalize_symtab) (bfd *abfd, asymbol **location)
252b5132 1907{
116c20d2
NC		 1908 unsigned int counter = 0;
1909 aout_symbol_type *symbase;
252b5132 1910
116c20d2
NC		 1911 if (!NAME (aout, slurp_symbol_table) (abfd))
1912 return -1;
252b5132 1913
116c20d2
NC		 1914 for (symbase = obj_aout_symbols (abfd);
1915 counter++ < bfd_get_symcount (abfd);
1916 )
1917 *(location++) = (asymbol *) (symbase++);
1918 *location++ =0;
1919 return bfd_get_symcount (abfd);
252b5132 1920}
252b5132 1921\f
f7c33884 1922/* Standard reloc stuff. */
0ef5a5bd 1923/* Output standard relocation information to a file in target byte order. */
252b5132 1924
116c20d2
NC		 1925extern void NAME (aout, swap_std_reloc_out)
1926 (bfd *, arelent *, struct reloc_std_external *);
252b5132
RH		 1927
1928void
116c20d2
NC		 1929NAME (aout, swap_std_reloc_out) (bfd *abfd,
1930 arelent *g,
1931 struct reloc_std_external *natptr)
252b5132
RH		 1932{
1933 int r_index;
1934 asymbol *sym = *(g->sym_ptr_ptr);
1935 int r_extern;
1936 unsigned int r_length;
1937 int r_pcrel;
1938 int r_baserel, r_jmptable, r_relative;
1939 asection *output_section = sym->section->output_section;
1940
923f08ff 1941 PUT_WORD (abfd, g->address, natptr->r_address);
252b5132 1942
f7c33884
NC		 1943 r_length = g->howto->size ; /* Size as a power of two. */
1944 r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */
252b5132
RH		 1945 /* XXX This relies on relocs coming from a.out files. */
1946 r_baserel = (g->howto->type & 8) != 0;
1947 r_jmptable = (g->howto->type & 16) != 0;
1948 r_relative = (g->howto->type & 32) != 0;
1949
f7c33884 1950 /* Name was clobbered by aout_write_syms to be symbol index. */
252b5132
RH		 1951
1952 /* If this relocation is relative to a symbol then set the
1953 r_index to the symbols index, and the r_extern bit.
1954
1955 Absolute symbols can come in in two ways, either as an offset
1956 from the abs section, or as a symbol which has an abs value.
f7c33884 1957 check for that here. */
252b5132 1958
252b5132
RH		 1959 if (bfd_is_com_section (output_section)
1960 || bfd_is_abs_section (output_section)
22184a77
NC		 1961 || bfd_is_und_section (output_section)
1962 /* PR gas/3041 a.out relocs against weak symbols
1963 must be treated as if they were against externs. */
1964 || (sym->flags & BSF_WEAK))
252b5132
RH		 1965 {
1966 if (bfd_abs_section_ptr->symbol == sym)
f7c33884
NC		 1967 {
1968 /* Whoops, looked like an abs symbol, but is
1969 really an offset from the abs section. */
1970 r_index = N_ABS;
1971 r_extern = 0;
1972 }
252b5132 1973 else
f7c33884
NC		 1974 {
1975 /* Fill in symbol. */
1976 r_extern = 1;
1977 r_index = (*(g->sym_ptr_ptr))->KEEPIT;
1978 }
252b5132
RH		 1979 }
1980 else
1981 {
f7c33884 1982 /* Just an ordinary section. */
252b5132
RH		 1983 r_extern = 0;
1984 r_index = output_section->target_index;
1985 }
1986
f7c33884 1987 /* Now the fun stuff. */
923f08ff
AM		 1988 if (bfd_header_big_endian (abfd))
1989 {
252b5132
RH		 1990 natptr->r_index[0] = r_index >> 16;
1991 natptr->r_index[1] = r_index >> 8;
1992 natptr->r_index[2] = r_index;
923f08ff
AM		 1993 natptr->r_type[0] = ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0)
1994 | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0)
1995 | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0)
1996 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0)
1997 | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0)
1998 | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG));
1999 }
2000 else
2001 {
2002 natptr->r_index[2] = r_index >> 16;
2003 natptr->r_index[1] = r_index >> 8;
2004 natptr->r_index[0] = r_index;
2005 natptr->r_type[0] = ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0)
2006 | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0)
2007 | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0)
2008 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0)
2009 | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0)
2010 | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE));
2011 }
252b5132
RH		 2012}
2013
f7c33884 2014/* Extended stuff. */
0ef5a5bd 2015/* Output extended relocation information to a file in target byte order. */
252b5132 2016
116c20d2
NC		 2017extern void NAME (aout, swap_ext_reloc_out)
2018 (bfd *, arelent *, struct reloc_ext_external *);
252b5132
RH		 2019
2020void
116c20d2
NC		 2021NAME (aout, swap_ext_reloc_out) (bfd *abfd,
2022 arelent *g,
2023 struct reloc_ext_external *natptr)
252b5132
RH		 2024{
2025 int r_index;
2026 int r_extern;
2027 unsigned int r_type;
dc810e39 2028 bfd_vma r_addend;
252b5132
RH		 2029 asymbol *sym = *(g->sym_ptr_ptr);
2030 asection *output_section = sym->section->output_section;
2031
2032 PUT_WORD (abfd, g->address, natptr->r_address);
2033
2034 r_type = (unsigned int) g->howto->type;
2035
2036 r_addend = g->addend;
2037 if ((sym->flags & BSF_SECTION_SYM) != 0)
2038 r_addend += (*(g->sym_ptr_ptr))->section->output_section->vma;
2039
2040 /* If this relocation is relative to a symbol then set the
2041 r_index to the symbols index, and the r_extern bit.
2042
2043 Absolute symbols can come in in two ways, either as an offset
2044 from the abs section, or as a symbol which has an abs value.
2045 check for that here. */
252b5132
RH		 2046 if (bfd_is_abs_section (bfd_get_section (sym)))
2047 {
2048 r_extern = 0;
2049 r_index = N_ABS;
2050 }
2051 else if ((sym->flags & BSF_SECTION_SYM) == 0)
2052 {
2053 if (bfd_is_und_section (bfd_get_section (sym))
2054 || (sym->flags & BSF_GLOBAL) != 0)
2055 r_extern = 1;
2056 else
2057 r_extern = 0;
2058 r_index = (*(g->sym_ptr_ptr))->KEEPIT;
2059 }
2060 else
2061 {
f7c33884 2062 /* Just an ordinary section. */
252b5132
RH		 2063 r_extern = 0;
2064 r_index = output_section->target_index;
2065 }
2066
f7c33884 2067 /* Now the fun stuff. */
923f08ff
AM		 2068 if (bfd_header_big_endian (abfd))
2069 {
2070 natptr->r_index[0] = r_index >> 16;
2071 natptr->r_index[1] = r_index >> 8;
2072 natptr->r_index[2] = r_index;
2073 natptr->r_type[0] = ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0)
2074 | (r_type << RELOC_EXT_BITS_TYPE_SH_BIG));
2075 }
2076 else
2077 {
2078 natptr->r_index[2] = r_index >> 16;
2079 natptr->r_index[1] = r_index >> 8;
2080 natptr->r_index[0] = r_index;
2081 natptr->r_type[0] = ((r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0)
2082 | (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE));
2083 }
252b5132
RH		 2084
2085 PUT_WORD (abfd, r_addend, natptr->r_addend);
2086}
2087
2088/* BFD deals internally with all things based from the section they're
2089 in. so, something in 10 bytes into a text section with a base of
2090 50 would have a symbol (.text+10) and know .text vma was 50.
2091
2092 Aout keeps all it's symbols based from zero, so the symbol would
2093 contain 60. This macro subs the base of each section from the value
923f08ff
AM		 2094 to give the true offset from the section. */
2095
2096#define MOVE_ADDRESS(ad) \
2097 if (r_extern) \
2098 { \
2099 /* Undefined symbol. */ \
2100 cache_ptr->sym_ptr_ptr = symbols + r_index; \
252b5132 2101 cache_ptr->addend = ad; \
252b5132 2102 } \
923f08ff
AM		 2103 else \
2104 { \
2105 /* Defined, section relative. Replace symbol with pointer to \
2106 symbol which points to section. */ \
2107 switch (r_index) \
2108 { \
2109 case N_TEXT: \
2110 case N_TEXT | N_EXT: \
2111 cache_ptr->sym_ptr_ptr = obj_textsec (abfd)->symbol_ptr_ptr; \
2112 cache_ptr->addend = ad - su->textsec->vma; \
2113 break; \
2114 case N_DATA: \
2115 case N_DATA | N_EXT: \
2116 cache_ptr->sym_ptr_ptr = obj_datasec (abfd)->symbol_ptr_ptr; \
2117 cache_ptr->addend = ad - su->datasec->vma; \
2118 break; \
2119 case N_BSS: \
2120 case N_BSS | N_EXT: \
2121 cache_ptr->sym_ptr_ptr = obj_bsssec (abfd)->symbol_ptr_ptr; \
2122 cache_ptr->addend = ad - su->bsssec->vma; \
2123 break; \
2124 default: \
2125 case N_ABS: \
2126 case N_ABS | N_EXT: \
2127 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \
2128 cache_ptr->addend = ad; \
2129 break; \
2130 } \
2131 }
252b5132
RH		 2132
2133void
116c20d2
NC		 2134NAME (aout, swap_ext_reloc_in) (bfd *abfd,
2135 struct reloc_ext_external *bytes,
2136 arelent *cache_ptr,
2137 asymbol **symbols,
2138 bfd_size_type symcount)
252b5132
RH		 2139{
2140 unsigned int r_index;
2141 int r_extern;
2142 unsigned int r_type;
2143 struct aoutdata *su = &(abfd->tdata.aout_data->a);
2144
2145 cache_ptr->address = (GET_SWORD (abfd, bytes->r_address));
2146
f7c33884 2147 /* Now the fun stuff. */
923f08ff
AM		 2148 if (bfd_header_big_endian (abfd))
2149 {
d45913a0
DA		 2150 r_index = (((unsigned int) bytes->r_index[0] << 16)
2151 | ((unsigned int) bytes->r_index[1] << 8)
923f08ff
AM		 2152 | bytes->r_index[2]);
2153 r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG));
2154 r_type = ((bytes->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
2155 >> RELOC_EXT_BITS_TYPE_SH_BIG);
2156 }
2157 else
2158 {
d45913a0
DA		 2159 r_index = (((unsigned int) bytes->r_index[2] << 16)
2160 | ((unsigned int) bytes->r_index[1] << 8)
923f08ff
AM		 2161 | bytes->r_index[0]);
2162 r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE));
2163 r_type = ((bytes->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
2164 >> RELOC_EXT_BITS_TYPE_SH_LITTLE);
2165 }
252b5132 2166
ad756e3f
AM		 2167 if (r_type < TABLE_SIZE (howto_table_ext))
2168 cache_ptr->howto = howto_table_ext + r_type;
2169 else
2170 cache_ptr->howto = NULL;
252b5132
RH		 2171
2172 /* Base relative relocs are always against the symbol table,
2173 regardless of the setting of r_extern. r_extern just reflects
2174 whether the symbol the reloc is against is local or global. */
d45913a0
DA		 2175 if (r_type == (unsigned int) RELOC_BASE10
2176 || r_type == (unsigned int) RELOC_BASE13
2177 || r_type == (unsigned int) RELOC_BASE22)
252b5132
RH		 2178 r_extern = 1;
2179
2180 if (r_extern && r_index > symcount)
2181 {
2182 /* We could arrange to return an error, but it might be useful
2183 to see the file even if it is bad. */
2184 r_extern = 0;
2185 r_index = N_ABS;
2186 }
2187
923f08ff 2188 MOVE_ADDRESS (GET_SWORD (abfd, bytes->r_addend));
252b5132
RH		 2189}
2190
2191void
116c20d2
NC		 2192NAME (aout, swap_std_reloc_in) (bfd *abfd,
2193 struct reloc_std_external *bytes,
2194 arelent *cache_ptr,
2195 asymbol **symbols,
2196 bfd_size_type symcount)
252b5132
RH		 2197{
2198 unsigned int r_index;
2199 int r_extern;
2200 unsigned int r_length;
2201 int r_pcrel;
2202 int r_baserel, r_jmptable, r_relative;
2203 struct aoutdata *su = &(abfd->tdata.aout_data->a);
2204 unsigned int howto_idx;
2205
dc810e39 2206 cache_ptr->address = H_GET_32 (abfd, bytes->r_address);
252b5132 2207
f7c33884 2208 /* Now the fun stuff. */
923f08ff
AM		 2209 if (bfd_header_big_endian (abfd))
2210 {
d45913a0
DA		 2211 r_index = (((unsigned int) bytes->r_index[0] << 16)
2212 | ((unsigned int) bytes->r_index[1] << 8)
923f08ff
AM		 2213 | bytes->r_index[2]);
2214 r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
2215 r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
2216 r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_BIG));
2217 r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG));
2218 r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG));
2219 r_length = ((bytes->r_type[0] & RELOC_STD_BITS_LENGTH_BIG)
2220 >> RELOC_STD_BITS_LENGTH_SH_BIG);
2221 }
2222 else
2223 {
d45913a0
DA		 2224 r_index = (((unsigned int) bytes->r_index[2] << 16)
2225 | ((unsigned int) bytes->r_index[1] << 8)
923f08ff
AM		 2226 | bytes->r_index[0]);
2227 r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
2228 r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
2229 r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE));
2230 r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE));
2231 r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE));
2232 r_length = ((bytes->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE)
2233 >> RELOC_STD_BITS_LENGTH_SH_LITTLE);
2234 }
252b5132 2235
923f08ff
AM		 2236 howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel
2237 + 16 * r_jmptable + 32 * r_relative);
ad756e3f
AM		 2238 if (howto_idx < TABLE_SIZE (howto_table_std))
2239 {
2240 cache_ptr->howto = howto_table_std + howto_idx;
2241 if (cache_ptr->howto->type == (unsigned int) -1)
2242 cache_ptr->howto = NULL;
2243 }
2244 else
2245 cache_ptr->howto = NULL;
252b5132
RH		 2246
2247 /* Base relative relocs are always against the symbol table,
2248 regardless of the setting of r_extern. r_extern just reflects
2249 whether the symbol the reloc is against is local or global. */
2250 if (r_baserel)
2251 r_extern = 1;
2252
2253 if (r_extern && r_index > symcount)
2254 {
2255 /* We could arrange to return an error, but it might be useful
2256 to see the file even if it is bad. */
2257 r_extern = 0;
2258 r_index = N_ABS;
2259 }
2260
923f08ff 2261 MOVE_ADDRESS (0);
252b5132
RH		 2262}
2263
2264/* Read and swap the relocs for a section. */
2265
b34976b6 2266bfd_boolean
116c20d2 2267NAME (aout, slurp_reloc_table) (bfd *abfd, sec_ptr asect, asymbol **symbols)
252b5132 2268{
dc810e39 2269 bfd_size_type count;
252b5132 2270 bfd_size_type reloc_size;
116c20d2 2271 void * relocs;
252b5132
RH		 2272 arelent *reloc_cache;
2273 size_t each_size;
2274 unsigned int counter = 0;
2275 arelent *cache_ptr;
dc810e39 2276 bfd_size_type amt;
252b5132
RH		 2277
2278 if (asect->relocation)
b34976b6 2279 return TRUE;
252b5132
RH		 2280
2281 if (asect->flags & SEC_CONSTRUCTOR)
b34976b6 2282 return TRUE;
252b5132
RH		 2283
2284 if (asect == obj_datasec (abfd))
923f08ff 2285 reloc_size = exec_hdr (abfd)->a_drsize;
252b5132 2286 else if (asect == obj_textsec (abfd))
923f08ff 2287 reloc_size = exec_hdr (abfd)->a_trsize;
252b5132
RH		 2288 else if (asect == obj_bsssec (abfd))
2289 reloc_size = 0;
2290 else
2291 {
2292 bfd_set_error (bfd_error_invalid_operation);
b34976b6 2293 return FALSE;
252b5132
RH		 2294 }
2295
078c4bfc
MS		 2296 if (reloc_size == 0)
2297 return TRUE; /* Nothing to be done. */
2298
252b5132 2299 if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0)
b34976b6 2300 return FALSE;
252b5132
RH		 2301
2302 each_size = obj_reloc_entry_size (abfd);
2303
2304 count = reloc_size / each_size;
078c4bfc
MS		 2305 if (count == 0)
2306 return TRUE; /* Nothing to be done. */
252b5132 2307
dc810e39 2308 amt = count * sizeof (arelent);
116c20d2 2309 reloc_cache = bfd_zmalloc (amt);
078c4bfc 2310 if (reloc_cache == NULL)
b34976b6 2311 return FALSE;
252b5132 2312
dc810e39 2313 relocs = bfd_malloc (reloc_size);
078c4bfc 2314 if (relocs == NULL)
252b5132
RH		 2315 {
2316 free (reloc_cache);
b34976b6 2317 return FALSE;
252b5132
RH		 2318 }
2319
dc810e39 2320 if (bfd_bread (relocs, reloc_size, abfd) != reloc_size)
252b5132
RH		 2321 {
2322 free (relocs);
2323 free (reloc_cache);
b34976b6 2324 return FALSE;
252b5132
RH		 2325 }
2326
2327 cache_ptr = reloc_cache;
2328 if (each_size == RELOC_EXT_SIZE)
2329 {
dc810e39 2330 struct reloc_ext_external *rptr = (struct reloc_ext_external *) relocs;
252b5132
RH		 2331
2332 for (; counter < count; counter++, rptr++, cache_ptr++)
1642229e 2333 MY_swap_ext_reloc_in (abfd, rptr, cache_ptr, symbols,
dc810e39 2334 (bfd_size_type) bfd_get_symcount (abfd));
252b5132
RH		 2335 }
2336 else
2337 {
dc810e39 2338 struct reloc_std_external *rptr = (struct reloc_std_external *) relocs;
252b5132
RH		 2339
2340 for (; counter < count; counter++, rptr++, cache_ptr++)
2341 MY_swap_std_reloc_in (abfd, rptr, cache_ptr, symbols,
dc810e39 2342 (bfd_size_type) bfd_get_symcount (abfd));
252b5132
RH		 2343 }
2344
2345 free (relocs);
2346
2347 asect->relocation = reloc_cache;
2348 asect->reloc_count = cache_ptr - reloc_cache;
2349
b34976b6 2350 return TRUE;
252b5132
RH		 2351}
2352
2353/* Write out a relocation section into an object file. */
2354
b34976b6 2355bfd_boolean
116c20d2 2356NAME (aout, squirt_out_relocs) (bfd *abfd, asection *section)
252b5132
RH		 2357{
2358 arelent **generic;
2359 unsigned char *native, *natptr;
2360 size_t each_size;
2361
2362 unsigned int count = section->reloc_count;
dc810e39 2363 bfd_size_type natsize;
252b5132
RH		 2364
2365 if (count == 0 || section->orelocation == NULL)
b34976b6 2366 return TRUE;
252b5132
RH		 2367
2368 each_size = obj_reloc_entry_size (abfd);
dc810e39 2369 natsize = (bfd_size_type) each_size * count;
116c20d2 2370 native = bfd_zalloc (abfd, natsize);
252b5132 2371 if (!native)
b34976b6 2372 return FALSE;
252b5132
RH		 2373
2374 generic = section->orelocation;
2375
2376 if (each_size == RELOC_EXT_SIZE)
2377 {
2378 for (natptr = native;
2379 count != 0;
2380 --count, natptr += each_size, ++generic)
1642229e
HPN		 2381 MY_swap_ext_reloc_out (abfd, *generic,
2382 (struct reloc_ext_external *) natptr);
252b5132
RH		 2383 }
2384 else
2385 {
2386 for (natptr = native;
2387 count != 0;
2388 --count, natptr += each_size, ++generic)
923f08ff
AM		 2389 MY_swap_std_reloc_out (abfd, *generic,
2390 (struct reloc_std_external *) natptr);
252b5132
RH		 2391 }
2392
116c20d2 2393 if (bfd_bwrite ((void *) native, natsize, abfd) != natsize)
dc810e39 2394 {
923f08ff 2395 bfd_release (abfd, native);
b34976b6 2396 return FALSE;
dc810e39 2397 }
252b5132
RH		 2398 bfd_release (abfd, native);
2399
b34976b6 2400 return TRUE;
252b5132
RH		 2401}
2402
f7c33884
NC		 2403/* This is stupid. This function should be a boolean predicate. */
2404
252b5132 2405long
116c20d2
NC		 2406NAME (aout, canonicalize_reloc) (bfd *abfd,
2407 sec_ptr section,
2408 arelent **relptr,
2409 asymbol **symbols)
252b5132
RH		 2410{
2411 arelent *tblptr = section->relocation;
2412 unsigned int count;
2413
2414 if (section == obj_bsssec (abfd))
2415 {
2416 *relptr = NULL;
2417 return 0;
2418 }
2419
116c20d2 2420 if (!(tblptr || NAME (aout, slurp_reloc_table) (abfd, section, symbols)))
252b5132
RH		 2421 return -1;
2422
923f08ff
AM		 2423 if (section->flags & SEC_CONSTRUCTOR)
2424 {
2425 arelent_chain *chain = section->constructor_chain;
2426 for (count = 0; count < section->reloc_count; count ++)
2427 {
2428 *relptr ++ = &chain->relent;
2429 chain = chain->next;
2430 }
252b5132 2431 }
923f08ff
AM		 2432 else
2433 {
2434 tblptr = section->relocation;
252b5132 2435
923f08ff
AM		 2436 for (count = 0; count++ < section->reloc_count; )
2437 {
2438 *relptr++ = tblptr++;
2439 }
2440 }
252b5132
RH		 2441 *relptr = 0;
2442
2443 return section->reloc_count;
2444}
2445
2446long
116c20d2 2447NAME (aout, get_reloc_upper_bound) (bfd *abfd, sec_ptr asect)
252b5132 2448{
923f08ff
AM		 2449 if (bfd_get_format (abfd) != bfd_object)
2450 {
2451 bfd_set_error (bfd_error_invalid_operation);
2452 return -1;
2453 }
f7c33884 2454
923f08ff 2455 if (asect->flags & SEC_CONSTRUCTOR)
116c20d2 2456 return sizeof (arelent *) * (asect->reloc_count + 1);
252b5132
RH		 2457
2458 if (asect == obj_datasec (abfd))
116c20d2
NC		 2459 return sizeof (arelent *)
2460 * ((exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd))
2461 + 1);
252b5132
RH		 2462
2463 if (asect == obj_textsec (abfd))
116c20d2
NC		 2464 return sizeof (arelent *)
2465 * ((exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd))
2466 + 1);
252b5132
RH		 2467
2468 if (asect == obj_bsssec (abfd))
2469 return sizeof (arelent *);
2470
2471 if (asect == obj_bsssec (abfd))
2472 return 0;
2473
2474 bfd_set_error (bfd_error_invalid_operation);
2475 return -1;
2476}
252b5132
RH		 2477\f
2478long
116c20d2 2479NAME (aout, get_symtab_upper_bound) (bfd *abfd)
252b5132 2480{
116c20d2 2481 if (!NAME (aout, slurp_symbol_table) (abfd))
252b5132
RH		 2482 return -1;
2483
2484 return (bfd_get_symcount (abfd)+1) * (sizeof (aout_symbol_type *));
2485}
2486
1725a96e 2487alent *
116c20d2
NC		 2488NAME (aout, get_lineno) (bfd *ignore_abfd ATTRIBUTE_UNUSED,
2489 asymbol *ignore_symbol ATTRIBUTE_UNUSED)
252b5132 2490{
116c20d2 2491 return NULL;
252b5132
RH		 2492}
2493
252b5132 2494void
116c20d2
NC		 2495NAME (aout, get_symbol_info) (bfd *ignore_abfd ATTRIBUTE_UNUSED,
2496 asymbol *symbol,
2497 symbol_info *ret)
252b5132
RH		 2498{
2499 bfd_symbol_info (symbol, ret);
2500
2501 if (ret->type == '?')
2502 {
923f08ff 2503 int type_code = aout_symbol (symbol)->type & 0xff;
252b5132
RH		 2504 const char *stab_name = bfd_get_stab_name (type_code);
2505 static char buf[10];
2506
2507 if (stab_name == NULL)
2508 {
e60b52c6 2509 sprintf (buf, "(%d)", type_code);
252b5132
RH		 2510 stab_name = buf;
2511 }
2512 ret->type = '-';
2513 ret->stab_type = type_code;
923f08ff
AM		 2514 ret->stab_other = (unsigned) (aout_symbol (symbol)->other & 0xff);
2515 ret->stab_desc = (unsigned) (aout_symbol (symbol)->desc & 0xffff);
252b5132
RH		 2516 ret->stab_name = stab_name;
2517 }
2518}
2519
252b5132 2520void
116c20d2
NC		 2521NAME (aout, print_symbol) (bfd *abfd,
2522 void * afile,
2523 asymbol *symbol,
2524 bfd_print_symbol_type how)
252b5132
RH		 2525{
2526 FILE *file = (FILE *)afile;
2527
923f08ff 2528 switch (how)
252b5132 2529 {
923f08ff
AM		 2530 case bfd_print_symbol_name:
2531 if (symbol->name)
2532 fprintf (file,"%s", symbol->name);
2533 break;
2534 case bfd_print_symbol_more:
2535 fprintf (file,"%4x %2x %2x",
2536 (unsigned) (aout_symbol (symbol)->desc & 0xffff),
2537 (unsigned) (aout_symbol (symbol)->other & 0xff),
2538 (unsigned) (aout_symbol (symbol)->type));
2539 break;
2540 case bfd_print_symbol_all:
2541 {
2542 const char *section_name = symbol->section->name;
252b5132 2543
116c20d2 2544 bfd_print_symbol_vandf (abfd, (void *)file, symbol);
252b5132 2545
923f08ff
AM		 2546 fprintf (file," %-5s %04x %02x %02x",
2547 section_name,
2548 (unsigned) (aout_symbol (symbol)->desc & 0xffff),
2549 (unsigned) (aout_symbol (symbol)->other & 0xff),
2550 (unsigned) (aout_symbol (symbol)->type & 0xff));
2551 if (symbol->name)
2552 fprintf (file," %s", symbol->name);
2553 }
2554 break;
252b5132 2555 }
252b5132
RH		 2556}
2557
2558/* If we don't have to allocate more than 1MB to hold the generic
2559 symbols, we use the generic minisymbol methord: it's faster, since
2560 it only translates the symbols once, not multiple times. */
2561#define MINISYM_THRESHOLD (1000000 / sizeof (asymbol))
2562
2563/* Read minisymbols. For minisymbols, we use the unmodified a.out
2564 symbols. The minisymbol_to_symbol function translates these into
2565 BFD asymbol structures. */
2566
2567long
116c20d2
NC		 2568NAME (aout, read_minisymbols) (bfd *abfd,
2569 bfd_boolean dynamic,
2570 void * *minisymsp,
2571 unsigned int *sizep)
252b5132
RH		 2572{
2573 if (dynamic)
116c20d2
NC		 2574 /* We could handle the dynamic symbols here as well, but it's
2575 easier to hand them off. */
2576 return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep);
252b5132
RH		 2577
2578 if (! aout_get_external_symbols (abfd))
2579 return -1;
2580
2581 if (obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD)
2582 return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep);
2583
116c20d2 2584 *minisymsp = (void *) obj_aout_external_syms (abfd);
252b5132
RH		 2585
2586 /* By passing the external symbols back from this routine, we are
2587 giving up control over the memory block. Clear
2588 obj_aout_external_syms, so that we do not try to free it
2589 ourselves. */
2590 obj_aout_external_syms (abfd) = NULL;
2591
2592 *sizep = EXTERNAL_NLIST_SIZE;
2593 return obj_aout_external_sym_count (abfd);
2594}
2595
2596/* Convert a minisymbol to a BFD asymbol. A minisymbol is just an
2597 unmodified a.out symbol. The SYM argument is a structure returned
2598 by bfd_make_empty_symbol, which we fill in here. */
2599
2600asymbol *
116c20d2
NC		 2601NAME (aout, minisymbol_to_symbol) (bfd *abfd,
2602 bfd_boolean dynamic,
2603 const void * minisym,
2604 asymbol *sym)
252b5132
RH		 2605{
2606 if (dynamic
2607 || obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD)
2608 return _bfd_generic_minisymbol_to_symbol (abfd, dynamic, minisym, sym);
2609
2610 memset (sym, 0, sizeof (aout_symbol_type));
2611
2612 /* We call translate_symbol_table to translate a single symbol. */
116c20d2 2613 if (! (NAME (aout, translate_symbol_table)
252b5132
RH		 2614 (abfd,
2615 (aout_symbol_type *) sym,
2616 (struct external_nlist *) minisym,
2617 (bfd_size_type) 1,
2618 obj_aout_external_strings (abfd),
2619 obj_aout_external_string_size (abfd),
b34976b6 2620 FALSE)))
252b5132
RH		 2621 return NULL;
2622
2623 return sym;
2624}
2625
f7c33884
NC		 2626/* Provided a BFD, a section and an offset into the section, calculate
2627 and return the name of the source file and the line nearest to the
2628 wanted location. */
252b5132 2629
b34976b6 2630bfd_boolean
116c20d2
NC		 2631NAME (aout, find_nearest_line) (bfd *abfd,
2632 asection *section,
2633 asymbol **symbols,
2634 bfd_vma offset,
2635 const char **filename_ptr,
2636 const char **functionname_ptr,
2637 unsigned int *line_ptr)
252b5132 2638{
f7c33884 2639 /* Run down the file looking for the filename, function and linenumber. */
252b5132 2640 asymbol **p;
dc810e39
AM		 2641 const char *directory_name = NULL;
2642 const char *main_file_name = NULL;
2643 const char *current_file_name = NULL;
116c20d2 2644 const char *line_file_name = NULL; /* Value of current_file_name at line number. */
dc810e39 2645 const char *line_directory_name = NULL; /* Value of directory_name at line number. */
252b5132
RH		 2646 bfd_vma low_line_vma = 0;
2647 bfd_vma low_func_vma = 0;
2648 asymbol *func = 0;
dc810e39 2649 bfd_size_type filelen, funclen;
252b5132
RH		 2650 char *buf;
2651
2652 *filename_ptr = abfd->filename;
2653 *functionname_ptr = 0;
2654 *line_ptr = 0;
f7c33884 2655
116c20d2 2656 if (symbols != NULL)
923f08ff
AM		 2657 {
2658 for (p = symbols; *p; p++)
2659 {
2660 aout_symbol_type *q = (aout_symbol_type *) (*p);
2661 next:
2662 switch (q->type)
2663 {
2664 case N_TEXT:
2665 /* If this looks like a file name symbol, and it comes after
2666 the line number we have found so far, but before the
2667 offset, then we have probably not found the right line
2668 number. */
2669 if (q->symbol.value <= offset
2670 && ((q->symbol.value > low_line_vma
2671 && (line_file_name != NULL
2672 || *line_ptr != 0))
2673 || (q->symbol.value > low_func_vma
2674 && func != NULL)))
2675 {
2676 const char *symname;
252b5132 2677
923f08ff
AM		 2678 symname = q->symbol.name;
2679 if (strcmp (symname + strlen (symname) - 2, ".o") == 0)
2680 {
2681 if (q->symbol.value > low_line_vma)
2682 {
2683 *line_ptr = 0;
2684 line_file_name = NULL;
2685 }
2686 if (q->symbol.value > low_func_vma)
2687 func = NULL;
2688 }
2689 }
2690 break;
252b5132 2691
923f08ff
AM		 2692 case N_SO:
2693 /* If this symbol is less than the offset, but greater than
2694 the line number we have found so far, then we have not
2695 found the right line number. */
2696 if (q->symbol.value <= offset)
2697 {
2698 if (q->symbol.value > low_line_vma)
2699 {
2700 *line_ptr = 0;
2701 line_file_name = NULL;
2702 }
2703 if (q->symbol.value > low_func_vma)
2704 func = NULL;
2705 }
252b5132 2706
923f08ff
AM		 2707 main_file_name = current_file_name = q->symbol.name;
2708 /* Look ahead to next symbol to check if that too is an N_SO. */
2709 p++;
2710 if (*p == NULL)
c3864421 2711 goto done;
923f08ff
AM		 2712 q = (aout_symbol_type *) (*p);
2713 if (q->type != (int)N_SO)
2714 goto next;
2715
2716 /* Found a second N_SO First is directory; second is filename. */
2717 directory_name = current_file_name;
2718 main_file_name = current_file_name = q->symbol.name;
2719 if (obj_textsec (abfd) != section)
2720 goto done;
2721 break;
2722 case N_SOL:
2723 current_file_name = q->symbol.name;
2724 break;
252b5132 2725
923f08ff 2726 case N_SLINE:
252b5132 2727
923f08ff
AM		 2728 case N_DSLINE:
2729 case N_BSLINE:
2730 /* We'll keep this if it resolves nearer than the one we have
2731 already. */
2732 if (q->symbol.value >= low_line_vma
2733 && q->symbol.value <= offset)
2734 {
2735 *line_ptr = q->desc;
2736 low_line_vma = q->symbol.value;
2737 line_file_name = current_file_name;
2738 line_directory_name = directory_name;
2739 }
2740 break;
2741 case N_FUN:
2742 {
f7c33884 2743 /* We'll keep this if it is nearer than the one we have already. */
923f08ff 2744 if (q->symbol.value >= low_func_vma &&
f7c33884
NC		 2745 q->symbol.value <= offset)
2746 {
2747 low_func_vma = q->symbol.value;
2748 func = (asymbol *)q;
2749 }
923f08ff
AM		 2750 else if (q->symbol.value > offset)
2751 goto done;
2752 }
2753 break;
2754 }
252b5132 2755 }
252b5132 2756 }
252b5132
RH		 2757
2758 done:
2759 if (*line_ptr != 0)
2760 {
2761 main_file_name = line_file_name;
2762 directory_name = line_directory_name;
2763 }
2764
2765 if (main_file_name == NULL
5af11cab 2766 || IS_ABSOLUTE_PATH (main_file_name)
252b5132
RH		 2767 || directory_name == NULL)
2768 filelen = 0;
2769 else
2770 filelen = strlen (directory_name) + strlen (main_file_name);
f7c33884 2771
252b5132
RH		 2772 if (func == NULL)
2773 funclen = 0;
2774 else
2775 funclen = strlen (bfd_asymbol_name (func));
2776
2777 if (adata (abfd).line_buf != NULL)
2778 free (adata (abfd).line_buf);
f7c33884 2779
252b5132
RH		 2780 if (filelen + funclen == 0)
2781 adata (abfd).line_buf = buf = NULL;
2782 else
2783 {
116c20d2 2784 buf = bfd_malloc (filelen + funclen + 3);
252b5132
RH		 2785 adata (abfd).line_buf = buf;
2786 if (buf == NULL)
b34976b6 2787 return FALSE;
252b5132
RH		 2788 }
2789
2790 if (main_file_name != NULL)
2791 {
5af11cab 2792 if (IS_ABSOLUTE_PATH (main_file_name) || directory_name == NULL)
252b5132
RH		 2793 *filename_ptr = main_file_name;
2794 else
2795 {
2796 sprintf (buf, "%s%s", directory_name, main_file_name);
2797 *filename_ptr = buf;
2798 buf += filelen + 1;
2799 }
2800 }
2801
2802 if (func)
2803 {
2804 const char *function = func->name;
dc810e39 2805 char *colon;
252b5132
RH		 2806
2807 /* The caller expects a symbol name. We actually have a
2808 function name, without the leading underscore. Put the
2809 underscore back in, so that the caller gets a symbol name. */
2810 if (bfd_get_symbol_leading_char (abfd) == '\0')
2811 strcpy (buf, function);
2812 else
2813 {
2814 buf[0] = bfd_get_symbol_leading_char (abfd);
2815 strcpy (buf + 1, function);
2816 }
f7c33884 2817 /* Have to remove : stuff. */
dc810e39
AM		 2818 colon = strchr (buf, ':');
2819 if (colon != NULL)
2820 *colon = '\0';
252b5132
RH		 2821 *functionname_ptr = buf;
2822 }
2823
b34976b6 2824 return TRUE;
252b5132
RH		 2825}
2826
252b5132 2827int
a6b96beb
AM		 2828NAME (aout, sizeof_headers) (bfd *abfd,
2829 struct bfd_link_info *info ATTRIBUTE_UNUSED)
252b5132 2830{
923f08ff 2831 return adata (abfd).exec_bytes_size;
252b5132
RH		 2832}
2833
2834/* Free all information we have cached for this BFD. We can always
2835 read it again later if we need it. */
2836
b34976b6 2837bfd_boolean
116c20d2 2838NAME (aout, bfd_free_cached_info) (bfd *abfd)
252b5132
RH		 2839{
2840 asection *o;
2841
920581c5
L		 2842 if (bfd_get_format (abfd) != bfd_object
2843 || abfd->tdata.aout_data == NULL)
b34976b6 2844 return TRUE;
252b5132
RH		 2845
2846#define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; }
2847 BFCI_FREE (obj_aout_symbols (abfd));
2848#ifdef USE_MMAP
2849 obj_aout_external_syms (abfd) = 0;
2850 bfd_free_window (&obj_aout_sym_window (abfd));
2851 bfd_free_window (&obj_aout_string_window (abfd));
2852 obj_aout_external_strings (abfd) = 0;
2853#else
2854 BFCI_FREE (obj_aout_external_syms (abfd));
2855 BFCI_FREE (obj_aout_external_strings (abfd));
2856#endif
116c20d2 2857 for (o = abfd->sections; o != NULL; o = o->next)
252b5132
RH		 2858 BFCI_FREE (o->relocation);
2859#undef BFCI_FREE
2860
b34976b6 2861 return TRUE;
252b5132
RH		 2862}
2863\f
2864/* a.out link code. */
2865
252b5132
RH		 2866/* Routine to create an entry in an a.out link hash table. */
2867
2868struct bfd_hash_entry *
116c20d2
NC		 2869NAME (aout, link_hash_newfunc) (struct bfd_hash_entry *entry,
2870 struct bfd_hash_table *table,
2871 const char *string)
252b5132
RH		 2872{
2873 struct aout_link_hash_entry *ret = (struct aout_link_hash_entry *) entry;
2874
2875 /* Allocate the structure if it has not already been allocated by a
2876 subclass. */
116c20d2
NC		 2877 if (ret == NULL)
2878 ret = bfd_hash_allocate (table, sizeof (* ret));
2879 if (ret == NULL)
2880 return NULL;
252b5132
RH		 2881
2882 /* Call the allocation method of the superclass. */
2883 ret = ((struct aout_link_hash_entry *)
2884 _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2885 table, string));
2886 if (ret)
2887 {
2888 /* Set local fields. */
b34976b6 2889 ret->written = FALSE;
252b5132
RH		 2890 ret->indx = -1;
2891 }
2892
2893 return (struct bfd_hash_entry *) ret;
2894}
2895
2896/* Initialize an a.out link hash table. */
2897
b34976b6 2898bfd_boolean
116c20d2
NC		 2899NAME (aout, link_hash_table_init) (struct aout_link_hash_table *table,
2900 bfd *abfd,
2901 struct bfd_hash_entry *(*newfunc)
2902 (struct bfd_hash_entry *, struct bfd_hash_table *,
66eb6687
AM		 2903 const char *),
2904 unsigned int entsize)
252b5132 2905{
66eb6687 2906 return _bfd_link_hash_table_init (&table->root, abfd, newfunc, entsize);
252b5132
RH		 2907}
2908
2909/* Create an a.out link hash table. */
2910
2911struct bfd_link_hash_table *
116c20d2 2912NAME (aout, link_hash_table_create) (bfd *abfd)
252b5132
RH		 2913{
2914 struct aout_link_hash_table *ret;
116c20d2 2915 bfd_size_type amt = sizeof (* ret);
252b5132 2916
116c20d2 2917 ret = bfd_malloc (amt);
252b5132 2918 if (ret == NULL)
116c20d2 2919 return NULL;
5ed6aba4 2920
66eb6687
AM		 2921 if (!NAME (aout, link_hash_table_init) (ret, abfd,
2922 NAME (aout, link_hash_newfunc),
2923 sizeof (struct aout_link_hash_entry)))
252b5132
RH		 2924 {
2925 free (ret);
116c20d2 2926 return NULL;
252b5132
RH		 2927 }
2928 return &ret->root;
2929}
2930
116c20d2 2931/* Add all symbols from an object file to the hash table. */
252b5132 2932
b34976b6 2933static bfd_boolean
116c20d2 2934aout_link_add_symbols (bfd *abfd, struct bfd_link_info *info)
252b5132 2935{
116c20d2
NC		 2936 bfd_boolean (*add_one_symbol)
2937 (struct bfd_link_info *, bfd *, const char *, flagword, asection *,
2938 bfd_vma, const char *, bfd_boolean, bfd_boolean,
2939 struct bfd_link_hash_entry **);
2940 struct external_nlist *syms;
2941 bfd_size_type sym_count;
2942 char *strings;
2943 bfd_boolean copy;
2944 struct aout_link_hash_entry **sym_hash;
2945 struct external_nlist *p;
2946 struct external_nlist *pend;
2947 bfd_size_type amt;
252b5132 2948
116c20d2
NC		 2949 syms = obj_aout_external_syms (abfd);
2950 sym_count = obj_aout_external_sym_count (abfd);
2951 strings = obj_aout_external_strings (abfd);
2952 if (info->keep_memory)
2953 copy = FALSE;
2954 else
2955 copy = TRUE;
252b5132 2956
116c20d2 2957 if (aout_backend_info (abfd)->add_dynamic_symbols != NULL)
252b5132 2958 {
116c20d2
NC		 2959 if (! ((*aout_backend_info (abfd)->add_dynamic_symbols)
2960 (abfd, info, &syms, &sym_count, &strings)))
b34976b6 2961 return FALSE;
252b5132
RH		 2962 }
2963
20c6e70e
MS		 2964 if (sym_count == 0)
2965 return TRUE; /* Nothing to do. */
2966
116c20d2
NC		 2967 /* We keep a list of the linker hash table entries that correspond
2968 to particular symbols. We could just look them up in the hash
2969 table, but keeping the list is more efficient. Perhaps this
2970 should be conditional on info->keep_memory. */
2971 amt = sym_count * sizeof (struct aout_link_hash_entry *);
2972 sym_hash = bfd_alloc (abfd, amt);
20c6e70e 2973 if (sym_hash == NULL)
116c20d2
NC		 2974 return FALSE;
2975 obj_aout_sym_hashes (abfd) = sym_hash;
252b5132 2976
116c20d2
NC		 2977 add_one_symbol = aout_backend_info (abfd)->add_one_symbol;
2978 if (add_one_symbol == NULL)
2979 add_one_symbol = _bfd_generic_link_add_one_symbol;
252b5132 2980
116c20d2
NC		 2981 p = syms;
2982 pend = p + sym_count;
2983 for (; p < pend; p++, sym_hash++)
252b5132 2984 {
116c20d2 2985 int type;
252b5132 2986 const char *name;
116c20d2
NC		 2987 bfd_vma value;
2988 asection *section;
2989 flagword flags;
2990 const char *string;
252b5132 2991
116c20d2 2992 *sym_hash = NULL;
252b5132 2993
116c20d2 2994 type = H_GET_8 (abfd, p->e_type);
252b5132 2995
116c20d2
NC		 2996 /* Ignore debugging symbols. */
2997 if ((type & N_STAB) != 0)
2998 continue;
252b5132 2999
116c20d2
NC		 3000 name = strings + GET_WORD (abfd, p->e_strx);
3001 value = GET_WORD (abfd, p->e_value);
3002 flags = BSF_GLOBAL;
3003 string = NULL;
3004 switch (type)
252b5132 3005 {
116c20d2
NC		 3006 default:
3007 abort ();
f7c33884 3008
116c20d2
NC		 3009 case N_UNDF:
3010 case N_ABS:
3011 case N_TEXT:
3012 case N_DATA:
3013 case N_BSS:
3014 case N_FN_SEQ:
3015 case N_COMM:
3016 case N_SETV:
3017 case N_FN:
3018 /* Ignore symbols that are not externally visible. */
3019 continue;
3020 case N_INDR:
3021 /* Ignore local indirect symbol. */
3022 ++p;
3023 ++sym_hash;
3024 continue;
252b5132 3025
116c20d2
NC		 3026 case N_UNDF | N_EXT:
3027 if (value == 0)
f7c33884 3028 {
116c20d2
NC		 3029 section = bfd_und_section_ptr;
3030 flags = 0;
252b5132
RH		 3031 }
3032 else
3033 section = bfd_com_section_ptr;
3034 break;
3035 case N_ABS | N_EXT:
3036 section = bfd_abs_section_ptr;
3037 break;
3038 case N_TEXT | N_EXT:
3039 section = obj_textsec (abfd);
3040 value -= bfd_get_section_vma (abfd, section);
3041 break;
3042 case N_DATA | N_EXT:
3043 case N_SETV | N_EXT:
3044 /* Treat N_SETV symbols as N_DATA symbol; see comment in
3045 translate_from_native_sym_flags. */
3046 section = obj_datasec (abfd);
3047 value -= bfd_get_section_vma (abfd, section);
3048 break;
3049 case N_BSS | N_EXT:
3050 section = obj_bsssec (abfd);
3051 value -= bfd_get_section_vma (abfd, section);
3052 break;
3053 case N_INDR | N_EXT:
3054 /* An indirect symbol. The next symbol is the symbol
3055 which this one really is. */
3056 BFD_ASSERT (p + 1 < pend);
3057 ++p;
3058 string = strings + GET_WORD (abfd, p->e_strx);
3059 section = bfd_ind_section_ptr;
3060 flags |= BSF_INDIRECT;
3061 break;
3062 case N_COMM | N_EXT:
3063 section = bfd_com_section_ptr;
3064 break;
3065 case N_SETA: case N_SETA | N_EXT:
3066 section = bfd_abs_section_ptr;
3067 flags |= BSF_CONSTRUCTOR;
3068 break;
3069 case N_SETT: case N_SETT | N_EXT:
3070 section = obj_textsec (abfd);
3071 flags |= BSF_CONSTRUCTOR;
3072 value -= bfd_get_section_vma (abfd, section);
3073 break;
3074 case N_SETD: case N_SETD | N_EXT:
3075 section = obj_datasec (abfd);
3076 flags |= BSF_CONSTRUCTOR;
3077 value -= bfd_get_section_vma (abfd, section);
3078 break;
3079 case N_SETB: case N_SETB | N_EXT:
3080 section = obj_bsssec (abfd);
3081 flags |= BSF_CONSTRUCTOR;
3082 value -= bfd_get_section_vma (abfd, section);
3083 break;
3084 case N_WARNING:
3085 /* A warning symbol. The next symbol is the one to warn
9f400ee9
HPN		 3086 about. If there is no next symbol, just look away. */
3087 if (p + 1 >= pend)
3088 return TRUE;
252b5132
RH		 3089 ++p;
3090 string = name;
3091 name = strings + GET_WORD (abfd, p->e_strx);
3092 section = bfd_und_section_ptr;
3093 flags |= BSF_WARNING;
3094 break;
3095 case N_WEAKU:
3096 section = bfd_und_section_ptr;
3097 flags = BSF_WEAK;
3098 break;
3099 case N_WEAKA:
3100 section = bfd_abs_section_ptr;
3101 flags = BSF_WEAK;
3102 break;
3103 case N_WEAKT:
3104 section = obj_textsec (abfd);
3105 value -= bfd_get_section_vma (abfd, section);
3106 flags = BSF_WEAK;
3107 break;
3108 case N_WEAKD:
3109 section = obj_datasec (abfd);
3110 value -= bfd_get_section_vma (abfd, section);
3111 flags = BSF_WEAK;
3112 break;
3113 case N_WEAKB:
3114 section = obj_bsssec (abfd);
3115 value -= bfd_get_section_vma (abfd, section);
3116 flags = BSF_WEAK;
3117 break;
3118 }
3119
3120 if (! ((*add_one_symbol)
b34976b6 3121 (info, abfd, name, flags, section, value, string, copy, FALSE,
252b5132 3122 (struct bfd_link_hash_entry **) sym_hash)))
b34976b6 3123 return FALSE;
252b5132
RH		 3124
3125 /* Restrict the maximum alignment of a common symbol based on
3126 the architecture, since a.out has no way to represent
3127 alignment requirements of a section in a .o file. FIXME:
3128 This isn't quite right: it should use the architecture of the
3129 output file, not the input files. */
3130 if ((*sym_hash)->root.type == bfd_link_hash_common
3131 && ((*sym_hash)->root.u.c.p->alignment_power >
3132 bfd_get_arch_info (abfd)->section_align_power))
3133 (*sym_hash)->root.u.c.p->alignment_power =
3134 bfd_get_arch_info (abfd)->section_align_power;
3135
3136 /* If this is a set symbol, and we are not building sets, then
3137 it is possible for the hash entry to not have been set. In
3138 such a case, treat the symbol as not globally defined. */
3139 if ((*sym_hash)->root.type == bfd_link_hash_new)
3140 {
3141 BFD_ASSERT ((flags & BSF_CONSTRUCTOR) != 0);
3142 *sym_hash = NULL;
3143 }
3144
3145 if (type == (N_INDR | N_EXT) || type == N_WARNING)
3146 ++sym_hash;
3147 }
3148
b34976b6 3149 return TRUE;
252b5132 3150}
252b5132 3151
116c20d2
NC		 3152/* Free up the internal symbols read from an a.out file. */
3153
3154static bfd_boolean
3155aout_link_free_symbols (bfd *abfd)
252b5132 3156{
116c20d2
NC		 3157 if (obj_aout_external_syms (abfd) != NULL)
3158 {
3159#ifdef USE_MMAP
3160 bfd_free_window (&obj_aout_sym_window (abfd));
3161#else
3162 free ((void *) obj_aout_external_syms (abfd));
3163#endif
3164 obj_aout_external_syms (abfd) = NULL;
3165 }
3166 if (obj_aout_external_strings (abfd) != NULL)
3167 {
3168#ifdef USE_MMAP
3169 bfd_free_window (&obj_aout_string_window (abfd));
3170#else
3171 free ((void *) obj_aout_external_strings (abfd));
3172#endif
3173 obj_aout_external_strings (abfd) = NULL;
3174 }
3175 return TRUE;
3176}
252b5132 3177
116c20d2 3178/* Add symbols from an a.out object file. */
252b5132 3179
116c20d2
NC		 3180static bfd_boolean
3181aout_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info)
252b5132 3182{
116c20d2
NC		 3183 if (! aout_get_external_symbols (abfd))
3184 return FALSE;
3185 if (! aout_link_add_symbols (abfd, info))
3186 return FALSE;
3187 if (! info->keep_memory)
3188 {
3189 if (! aout_link_free_symbols (abfd))
3190 return FALSE;
3191 }
3192 return TRUE;
3193}
252b5132 3194
116c20d2
NC		 3195/* Look through the internal symbols to see if this object file should
3196 be included in the link. We should include this object file if it
3197 defines any symbols which are currently undefined. If this object
3198 file defines a common symbol, then we may adjust the size of the
3199 known symbol but we do not include the object file in the link
3200 (unless there is some other reason to include it). */
252b5132 3201
116c20d2
NC		 3202static bfd_boolean
3203aout_link_check_ar_symbols (bfd *abfd,
3204 struct bfd_link_info *info,
3205 bfd_boolean *pneeded)
252b5132 3206{
116c20d2
NC		 3207 struct external_nlist *p;
3208 struct external_nlist *pend;
3209 char *strings;
252b5132 3210
116c20d2 3211 *pneeded = FALSE;
252b5132 3212
116c20d2
NC		 3213 /* Look through all the symbols. */
3214 p = obj_aout_external_syms (abfd);
3215 pend = p + obj_aout_external_sym_count (abfd);
3216 strings = obj_aout_external_strings (abfd);
3217 for (; p < pend; p++)
3218 {
3219 int type = H_GET_8 (abfd, p->e_type);
3220 const char *name;
3221 struct bfd_link_hash_entry *h;
252b5132 3222
116c20d2
NC		 3223 /* Ignore symbols that are not externally visible. This is an
3224 optimization only, as we check the type more thoroughly
3225 below. */
3226 if (((type & N_EXT) == 0
3227 || (type & N_STAB) != 0
3228 || type == N_FN)
3229 && type != N_WEAKA
3230 && type != N_WEAKT
3231 && type != N_WEAKD
3232 && type != N_WEAKB)
3233 {
3234 if (type == N_WARNING
3235 || type == N_INDR)
3236 ++p;
3237 continue;
3238 }
3239
3240 name = strings + GET_WORD (abfd, p->e_strx);
3241 h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE);
3242
3243 /* We are only interested in symbols that are currently
3244 undefined or common. */
3245 if (h == NULL
3246 || (h->type != bfd_link_hash_undefined
3247 && h->type != bfd_link_hash_common))
3248 {
3249 if (type == (N_INDR | N_EXT))
3250 ++p;
3251 continue;
3252 }
3253
3254 if (type == (N_TEXT | N_EXT)
3255 || type == (N_DATA | N_EXT)
3256 || type == (N_BSS | N_EXT)
3257 || type == (N_ABS | N_EXT)
3258 || type == (N_INDR | N_EXT))
3259 {
3260 /* This object file defines this symbol. We must link it
3261 in. This is true regardless of whether the current
3262 definition of the symbol is undefined or common.
3263
3264 If the current definition is common, we have a case in
3265 which we have already seen an object file including:
3266 int a;
3267 and this object file from the archive includes:
3268 int a = 5;
3269 In such a case, whether to include this object is target
3270 dependant for backward compatibility.
3271
3272 FIXME: The SunOS 4.1.3 linker will pull in the archive
3273 element if the symbol is defined in the .data section,
3274 but not if it is defined in the .text section. That
3275 seems a bit crazy to me, and it has not been implemented
3276 yet. However, it might be correct. */
3277 if (h->type == bfd_link_hash_common)
3278 {
3279 int skip = 0;
3280
3281 switch (info->common_skip_ar_aymbols)
3282 {
3283 case bfd_link_common_skip_text:
3284 skip = (type == (N_TEXT | N_EXT));
3285 break;
3286 case bfd_link_common_skip_data:
3287 skip = (type == (N_DATA | N_EXT));
3288 break;
3289 default:
3290 case bfd_link_common_skip_all:
3291 skip = 1;
3292 break;
3293 }
3294
3295 if (skip)
3296 continue;
3297 }
3298
3299 if (! (*info->callbacks->add_archive_element) (info, abfd, name))
3300 return FALSE;
3301 *pneeded = TRUE;
3302 return TRUE;
3303 }
3304
3305 if (type == (N_UNDF | N_EXT))
3306 {
3307 bfd_vma value;
3308
3309 value = GET_WORD (abfd, p->e_value);
3310 if (value != 0)
3311 {
3312 /* This symbol is common in the object from the archive
3313 file. */
3314 if (h->type == bfd_link_hash_undefined)
3315 {
3316 bfd *symbfd;
3317 unsigned int power;
3318
3319 symbfd = h->u.undef.abfd;
3320 if (symbfd == NULL)
3321 {
3322 /* This symbol was created as undefined from
3323 outside BFD. We assume that we should link
3324 in the object file. This is done for the -u
3325 option in the linker. */
3326 if (! (*info->callbacks->add_archive_element) (info,
3327 abfd,
3328 name))
3329 return FALSE;
3330 *pneeded = TRUE;
3331 return TRUE;
3332 }
3333 /* Turn the current link symbol into a common
3334 symbol. It is already on the undefs list. */
3335 h->type = bfd_link_hash_common;
3336 h->u.c.p = bfd_hash_allocate (&info->hash->table,
3337 sizeof (struct bfd_link_hash_common_entry));
3338 if (h->u.c.p == NULL)
3339 return FALSE;
3340
3341 h->u.c.size = value;
3342
3343 /* FIXME: This isn't quite right. The maximum
3344 alignment of a common symbol should be set by the
3345 architecture of the output file, not of the input
3346 file. */
3347 power = bfd_log2 (value);
3348 if (power > bfd_get_arch_info (abfd)->section_align_power)
3349 power = bfd_get_arch_info (abfd)->section_align_power;
3350 h->u.c.p->alignment_power = power;
3351
3352 h->u.c.p->section = bfd_make_section_old_way (symbfd,
3353 "COMMON");
3354 }
3355 else
3356 {
3357 /* Adjust the size of the common symbol if
3358 necessary. */
3359 if (value > h->u.c.size)
3360 h->u.c.size = value;
3361 }
3362 }
3363 }
3364
3365 if (type == N_WEAKA
3366 || type == N_WEAKT
3367 || type == N_WEAKD
3368 || type == N_WEAKB)
3369 {
3370 /* This symbol is weak but defined. We must pull it in if
3371 the current link symbol is undefined, but we don't want
3372 it if the current link symbol is common. */
3373 if (h->type == bfd_link_hash_undefined)
3374 {
3375 if (! (*info->callbacks->add_archive_element) (info, abfd, name))
3376 return FALSE;
3377 *pneeded = TRUE;
3378 return TRUE;
3379 }
3380 }
3381 }
3382
3383 /* We do not need this object file. */
3384 return TRUE;
3385}
3386/* Check a single archive element to see if we need to include it in
3387 the link. *PNEEDED is set according to whether this element is
3388 needed in the link or not. This is called from
3389 _bfd_generic_link_add_archive_symbols. */
3390
3391static bfd_boolean
3392aout_link_check_archive_element (bfd *abfd,
3393 struct bfd_link_info *info,
3394 bfd_boolean *pneeded)
3395{
3396 if (! aout_get_external_symbols (abfd))
3397 return FALSE;
3398
3399 if (! aout_link_check_ar_symbols (abfd, info, pneeded))
3400 return FALSE;
3401
3402 if (*pneeded)
3403 {
3404 if (! aout_link_add_symbols (abfd, info))
3405 return FALSE;
3406 }
3407
3408 if (! info->keep_memory || ! *pneeded)
3409 {
3410 if (! aout_link_free_symbols (abfd))
3411 return FALSE;
3412 }
3413
3414 return TRUE;
3415}
3416
3417/* Given an a.out BFD, add symbols to the global hash table as
3418 appropriate. */
3419
3420bfd_boolean
3421NAME (aout, link_add_symbols) (bfd *abfd, struct bfd_link_info *info)
3422{
3423 switch (bfd_get_format (abfd))
3424 {
3425 case bfd_object:
3426 return aout_link_add_object_symbols (abfd, info);
3427 case bfd_archive:
3428 return _bfd_generic_link_add_archive_symbols
3429 (abfd, info, aout_link_check_archive_element);
3430 default:
3431 bfd_set_error (bfd_error_wrong_format);
3432 return FALSE;
3433 }
3434}
3435\f
3436/* A hash table used for header files with N_BINCL entries. */
3437
3438struct aout_link_includes_table
3439{
3440 struct bfd_hash_table root;
3441};
3442
3443/* A linked list of totals that we have found for a particular header
3444 file. */
3445
3446struct aout_link_includes_totals
3447{
3448 struct aout_link_includes_totals *next;
3449 bfd_vma total;
3450};
3451
3452/* An entry in the header file hash table. */
3453
3454struct aout_link_includes_entry
3455{
3456 struct bfd_hash_entry root;
3457 /* List of totals we have found for this file. */
3458 struct aout_link_includes_totals *totals;
3459};
3460
3461/* Look up an entry in an the header file hash table. */
3462
3463#define aout_link_includes_lookup(table, string, create, copy) \
3464 ((struct aout_link_includes_entry *) \
3465 bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
3466
3467/* During the final link step we need to pass around a bunch of
3468 information, so we do it in an instance of this structure. */
3469
3470struct aout_final_link_info
3471{
3472 /* General link information. */
3473 struct bfd_link_info *info;
3474 /* Output bfd. */
252b5132
RH		 3475 bfd *output_bfd;
3476 /* Reloc file positions. */
3477 file_ptr treloff, dreloff;
3478 /* File position of symbols. */
3479 file_ptr symoff;
3480 /* String table. */
3481 struct bfd_strtab_hash *strtab;
3482 /* Header file hash table. */
3483 struct aout_link_includes_table includes;
3484 /* A buffer large enough to hold the contents of any section. */
3485 bfd_byte *contents;
3486 /* A buffer large enough to hold the relocs of any section. */
116c20d2 3487 void * relocs;
252b5132
RH		 3488 /* A buffer large enough to hold the symbol map of any input BFD. */
3489 int *symbol_map;
3490 /* A buffer large enough to hold output symbols of any input BFD. */
3491 struct external_nlist *output_syms;
3492};
3493
252b5132
RH		 3494/* The function to create a new entry in the header file hash table. */
3495
3496static struct bfd_hash_entry *
116c20d2
NC		 3497aout_link_includes_newfunc (struct bfd_hash_entry *entry,
3498 struct bfd_hash_table *table,
3499 const char *string)
252b5132
RH		 3500{
3501 struct aout_link_includes_entry *ret =
3502 (struct aout_link_includes_entry *) entry;
3503
3504 /* Allocate the structure if it has not already been allocated by a
3505 subclass. */
116c20d2
NC		 3506 if (ret == NULL)
3507 ret = bfd_hash_allocate (table, sizeof (* ret));
3508 if (ret == NULL)
3509 return NULL;
252b5132
RH		 3510
3511 /* Call the allocation method of the superclass. */
3512 ret = ((struct aout_link_includes_entry *)
3513 bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string));
3514 if (ret)
3515 {
3516 /* Set local fields. */
3517 ret->totals = NULL;
3518 }
3519
3520 return (struct bfd_hash_entry *) ret;
3521}
3522
116c20d2
NC		 3523/* Write out a symbol that was not associated with an a.out input
3524 object. */
252b5132 3525
116c20d2
NC		 3526static bfd_boolean
3527aout_link_write_other_symbol (struct aout_link_hash_entry *h, void * data)
252b5132 3528{
116c20d2
NC		 3529 struct aout_final_link_info *finfo = (struct aout_final_link_info *) data;
3530 bfd *output_bfd;
3531 int type;
3532 bfd_vma val;
3533 struct external_nlist outsym;
3534 bfd_size_type indx;
3535 bfd_size_type amt;
252b5132 3536
116c20d2
NC		 3537 if (h->root.type == bfd_link_hash_warning)
3538 {
3539 h = (struct aout_link_hash_entry *) h->root.u.i.link;
3540 if (h->root.type == bfd_link_hash_new)
3541 return TRUE;
3542 }
252b5132 3543
116c20d2 3544 output_bfd = finfo->output_bfd;
252b5132 3545
116c20d2 3546 if (aout_backend_info (output_bfd)->write_dynamic_symbol != NULL)
252b5132 3547 {
116c20d2
NC		 3548 if (! ((*aout_backend_info (output_bfd)->write_dynamic_symbol)
3549 (output_bfd, finfo->info, h)))
252b5132 3550 {
116c20d2
NC		 3551 /* FIXME: No way to handle errors. */
3552 abort ();
252b5132 3553 }
116c20d2 3554 }
252b5132 3555
116c20d2
NC		 3556 if (h->written)
3557 return TRUE;
252b5132 3558
116c20d2 3559 h->written = TRUE;
252b5132 3560
116c20d2
NC		 3561 /* An indx of -2 means the symbol must be written. */
3562 if (h->indx != -2
3563 && (finfo->info->strip == strip_all
3564 || (finfo->info->strip == strip_some
3565 && bfd_hash_lookup (finfo->info->keep_hash, h->root.root.string,
3566 FALSE, FALSE) == NULL)))
3567 return TRUE;
252b5132 3568
116c20d2 3569 switch (h->root.type)
252b5132 3570 {
116c20d2
NC		 3571 default:
3572 case bfd_link_hash_warning:
3573 abort ();
3574 /* Avoid variable not initialized warnings. */
3575 return TRUE;
3576 case bfd_link_hash_new:
3577 /* This can happen for set symbols when sets are not being
3578 built. */
3579 return TRUE;
3580 case bfd_link_hash_undefined:
3581 type = N_UNDF | N_EXT;
3582 val = 0;
3583 break;
3584 case bfd_link_hash_defined:
3585 case bfd_link_hash_defweak:
3586 {
3587 asection *sec;
252b5132 3588
116c20d2
NC		 3589 sec = h->root.u.def.section->output_section;
3590 BFD_ASSERT (bfd_is_abs_section (sec)
3591 || sec->owner == output_bfd);
3592 if (sec == obj_textsec (output_bfd))
3593 type = h->root.type == bfd_link_hash_defined ? N_TEXT : N_WEAKT;
3594 else if (sec == obj_datasec (output_bfd))
3595 type = h->root.type == bfd_link_hash_defined ? N_DATA : N_WEAKD;
3596 else if (sec == obj_bsssec (output_bfd))
3597 type = h->root.type == bfd_link_hash_defined ? N_BSS : N_WEAKB;
3598 else
3599 type = h->root.type == bfd_link_hash_defined ? N_ABS : N_WEAKA;
3600 type |= N_EXT;
3601 val = (h->root.u.def.value
3602 + sec->vma
3603 + h->root.u.def.section->output_offset);
3604 }
3605 break;
3606 case bfd_link_hash_common:
3607 type = N_UNDF | N_EXT;
3608 val = h->root.u.c.size;
3609 break;
3610 case bfd_link_hash_undefweak:
3611 type = N_WEAKU;
3612 val = 0;
3613 case bfd_link_hash_indirect:
3614 /* We ignore these symbols, since the indirected symbol is
3615 already in the hash table. */
3616 return TRUE;
3617 }
252b5132 3618
116c20d2
NC		 3619 H_PUT_8 (output_bfd, type, outsym.e_type);
3620 H_PUT_8 (output_bfd, 0, outsym.e_other);
3621 H_PUT_16 (output_bfd, 0, outsym.e_desc);
3622 indx = add_to_stringtab (output_bfd, finfo->strtab, h->root.root.string,
3623 FALSE);
3624 if (indx == - (bfd_size_type) 1)
3625 /* FIXME: No way to handle errors. */
3626 abort ();
252b5132 3627
116c20d2
NC		 3628 PUT_WORD (output_bfd, indx, outsym.e_strx);
3629 PUT_WORD (output_bfd, val, outsym.e_value);
252b5132 3630
116c20d2
NC		 3631 amt = EXTERNAL_NLIST_SIZE;
3632 if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0
3633 || bfd_bwrite ((void *) &outsym, amt, output_bfd) != amt)
3634 /* FIXME: No way to handle errors. */
3635 abort ();
252b5132 3636
116c20d2
NC		 3637 finfo->symoff += EXTERNAL_NLIST_SIZE;
3638 h->indx = obj_aout_external_sym_count (output_bfd);
3639 ++obj_aout_external_sym_count (output_bfd);
252b5132 3640
116c20d2
NC		 3641 return TRUE;
3642}
252b5132 3643
116c20d2 3644/* Handle a link order which is supposed to generate a reloc. */
252b5132 3645
116c20d2
NC		 3646static bfd_boolean
3647aout_link_reloc_link_order (struct aout_final_link_info *finfo,
3648 asection *o,
3649 struct bfd_link_order *p)
3650{
3651 struct bfd_link_order_reloc *pr;
3652 int r_index;
3653 int r_extern;
3654 reloc_howto_type *howto;
3655 file_ptr *reloff_ptr = NULL;
3656 struct reloc_std_external srel;
3657 struct reloc_ext_external erel;
3658 void * rel_ptr;
3659 bfd_size_type amt;
252b5132 3660
116c20d2 3661 pr = p->u.reloc.p;
252b5132 3662
116c20d2
NC		 3663 if (p->type == bfd_section_reloc_link_order)
3664 {
3665 r_extern = 0;
3666 if (bfd_is_abs_section (pr->u.section))
3667 r_index = N_ABS | N_EXT;
3668 else
3669 {
3670 BFD_ASSERT (pr->u.section->owner == finfo->output_bfd);
3671 r_index = pr->u.section->target_index;
3672 }
3673 }
3674 else
3675 {
3676 struct aout_link_hash_entry *h;
252b5132 3677
116c20d2
NC		 3678 BFD_ASSERT (p->type == bfd_symbol_reloc_link_order);
3679 r_extern = 1;
3680 h = ((struct aout_link_hash_entry *)
3681 bfd_wrapped_link_hash_lookup (finfo->output_bfd, finfo->info,
3682 pr->u.name, FALSE, FALSE, TRUE));
3683 if (h != NULL
3684 && h->indx >= 0)
3685 r_index = h->indx;
3686 else if (h != NULL)
3687 {
3688 /* We decided to strip this symbol, but it turns out that we
3689 can't. Note that we lose the other and desc information
3690 here. I don't think that will ever matter for a global
3691 symbol. */
3692 h->indx = -2;
3693 h->written = FALSE;
3694 if (! aout_link_write_other_symbol (h, (void *) finfo))
3695 return FALSE;
3696 r_index = h->indx;
3697 }
3698 else
3699 {
3700 if (! ((*finfo->info->callbacks->unattached_reloc)
3701 (finfo->info, pr->u.name, NULL, NULL, (bfd_vma) 0)))
3702 return FALSE;
3703 r_index = 0;
3704 }
3705 }
252b5132 3706
116c20d2
NC		 3707 howto = bfd_reloc_type_lookup (finfo->output_bfd, pr->reloc);
3708 if (howto == 0)
252b5132 3709 {
116c20d2
NC		 3710 bfd_set_error (bfd_error_bad_value);
3711 return FALSE;
252b5132
RH		 3712 }
3713
116c20d2
NC		 3714 if (o == obj_textsec (finfo->output_bfd))
3715 reloff_ptr = &finfo->treloff;
3716 else if (o == obj_datasec (finfo->output_bfd))
3717 reloff_ptr = &finfo->dreloff;
3718 else
3719 abort ();
3720
3721 if (obj_reloc_entry_size (finfo->output_bfd) == RELOC_STD_SIZE)
252b5132 3722 {
116c20d2
NC		 3723#ifdef MY_put_reloc
3724 MY_put_reloc (finfo->output_bfd, r_extern, r_index, p->offset, howto,
3725 &srel);
3726#else
3727 {
3728 int r_pcrel;
3729 int r_baserel;
3730 int r_jmptable;
3731 int r_relative;
3732 int r_length;
252b5132 3733
116c20d2
NC		 3734 r_pcrel = (int) howto->pc_relative;
3735 r_baserel = (howto->type & 8) != 0;
3736 r_jmptable = (howto->type & 16) != 0;
3737 r_relative = (howto->type & 32) != 0;
3738 r_length = howto->size;
252b5132 3739
116c20d2
NC		 3740 PUT_WORD (finfo->output_bfd, p->offset, srel.r_address);
3741 if (bfd_header_big_endian (finfo->output_bfd))
3742 {
3743 srel.r_index[0] = r_index >> 16;
3744 srel.r_index[1] = r_index >> 8;
3745 srel.r_index[2] = r_index;
3746 srel.r_type[0] =
3747 ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0)
3748 | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0)
3749 | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0)
3750 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0)
3751 | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0)
3752 | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG));
3753 }
3754 else
3755 {
3756 srel.r_index[2] = r_index >> 16;
3757 srel.r_index[1] = r_index >> 8;
3758 srel.r_index[0] = r_index;
3759 srel.r_type[0] =
3760 ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0)
3761 | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0)
3762 | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0)
3763 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0)
3764 | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0)
3765 | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE));
3766 }
3767 }
3768#endif
3769 rel_ptr = (void *) &srel;
252b5132 3770
116c20d2
NC		 3771 /* We have to write the addend into the object file, since
3772 standard a.out relocs are in place. It would be more
3773 reliable if we had the current contents of the file here,
3774 rather than assuming zeroes, but we can't read the file since
3775 it was opened using bfd_openw. */
3776 if (pr->addend != 0)
252b5132 3777 {
116c20d2
NC		 3778 bfd_size_type size;
3779 bfd_reloc_status_type r;
3780 bfd_byte *buf;
3781 bfd_boolean ok;
3782
3783 size = bfd_get_reloc_size (howto);
3784 buf = bfd_zmalloc (size);
3785 if (buf == NULL)
3786 return FALSE;
3787 r = MY_relocate_contents (howto, finfo->output_bfd,
3788 (bfd_vma) pr->addend, buf);
3789 switch (r)
252b5132 3790 {
116c20d2
NC		 3791 case bfd_reloc_ok:
3792 break;
3793 default:
3794 case bfd_reloc_outofrange:
3795 abort ();
3796 case bfd_reloc_overflow:
3797 if (! ((*finfo->info->callbacks->reloc_overflow)
3798 (finfo->info, NULL,
3799 (p->type == bfd_section_reloc_link_order
3800 ? bfd_section_name (finfo->output_bfd,
3801 pr->u.section)
3802 : pr->u.name),
3803 howto->name, pr->addend, NULL, NULL, (bfd_vma) 0)))
252b5132 3804 {
116c20d2
NC		 3805 free (buf);
3806 return FALSE;
252b5132 3807 }
116c20d2 3808 break;
252b5132 3809 }
116c20d2
NC		 3810 ok = bfd_set_section_contents (finfo->output_bfd, o, (void *) buf,
3811 (file_ptr) p->offset, size);
3812 free (buf);
3813 if (! ok)
3814 return FALSE;
252b5132
RH		 3815 }
3816 }
116c20d2 3817 else
252b5132 3818 {
116c20d2
NC		 3819#ifdef MY_put_ext_reloc
3820 MY_put_ext_reloc (finfo->output_bfd, r_extern, r_index, p->offset,
3821 howto, &erel, pr->addend);
3822#else
3823 PUT_WORD (finfo->output_bfd, p->offset, erel.r_address);
252b5132 3824
116c20d2
NC		 3825 if (bfd_header_big_endian (finfo->output_bfd))
3826 {
3827 erel.r_index[0] = r_index >> 16;
3828 erel.r_index[1] = r_index >> 8;
3829 erel.r_index[2] = r_index;
3830 erel.r_type[0] =
3831 ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0)
3832 | (howto->type << RELOC_EXT_BITS_TYPE_SH_BIG));
3833 }
3834 else
3835 {
3836 erel.r_index[2] = r_index >> 16;
3837 erel.r_index[1] = r_index >> 8;
3838 erel.r_index[0] = r_index;
3839 erel.r_type[0] =
3840 (r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0)
3841 | (howto->type << RELOC_EXT_BITS_TYPE_SH_LITTLE);
3842 }
252b5132 3843
116c20d2
NC		 3844 PUT_WORD (finfo->output_bfd, (bfd_vma) pr->addend, erel.r_addend);
3845#endif /* MY_put_ext_reloc */
252b5132 3846
116c20d2 3847 rel_ptr = (void *) &erel;
252b5132 3848 }
252b5132 3849
116c20d2
NC		 3850 amt = obj_reloc_entry_size (finfo->output_bfd);
3851 if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0
3852 || bfd_bwrite (rel_ptr, amt, finfo->output_bfd) != amt)
3853 return FALSE;
252b5132 3854
116c20d2 3855 *reloff_ptr += obj_reloc_entry_size (finfo->output_bfd);
252b5132 3856
116c20d2
NC		 3857 /* Assert that the relocs have not run into the symbols, and that n
3858 the text relocs have not run into the data relocs. */
3859 BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd)
3860 && (reloff_ptr != &finfo->treloff
3861 || (*reloff_ptr
3862 <= obj_datasec (finfo->output_bfd)->rel_filepos)));
3863
3864 return TRUE;
252b5132
RH		 3865}
3866
116c20d2 3867/* Get the section corresponding to a reloc index. */
252b5132 3868
116c20d2
NC		 3869static INLINE asection *
3870aout_reloc_index_to_section (bfd *abfd, int indx)
252b5132 3871{
116c20d2 3872 switch (indx & N_TYPE)
252b5132 3873 {
116c20d2
NC		 3874 case N_TEXT: return obj_textsec (abfd);
3875 case N_DATA: return obj_datasec (abfd);
3876 case N_BSS: return obj_bsssec (abfd);
3877 case N_ABS:
3878 case N_UNDF: return bfd_abs_section_ptr;
3879 default: abort ();
252b5132 3880 }
116c20d2 3881 return NULL;
252b5132
RH		 3882}
3883
116c20d2 3884/* Relocate an a.out section using standard a.out relocs. */
252b5132 3885
b34976b6 3886static bfd_boolean
116c20d2
NC		 3887aout_link_input_section_std (struct aout_final_link_info *finfo,
3888 bfd *input_bfd,
3889 asection *input_section,
3890 struct reloc_std_external *relocs,
3891 bfd_size_type rel_size,
3892 bfd_byte *contents)
252b5132 3893{
116c20d2
NC		 3894 bfd_boolean (*check_dynamic_reloc)
3895 (struct bfd_link_info *, bfd *, asection *,
3896 struct aout_link_hash_entry *, void *, bfd_byte *, bfd_boolean *,
3897 bfd_vma *);
252b5132 3898 bfd *output_bfd;
116c20d2
NC		 3899 bfd_boolean relocatable;
3900 struct external_nlist *syms;
252b5132 3901 char *strings;
116c20d2 3902 struct aout_link_hash_entry **sym_hashes;
252b5132 3903 int *symbol_map;
116c20d2
NC		 3904 bfd_size_type reloc_count;
3905 struct reloc_std_external *rel;
3906 struct reloc_std_external *rel_end;
252b5132
RH		 3907
3908 output_bfd = finfo->output_bfd;
116c20d2 3909 check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc;
252b5132 3910
116c20d2
NC		 3911 BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE);
3912 BFD_ASSERT (input_bfd->xvec->header_byteorder
3913 == output_bfd->xvec->header_byteorder);
252b5132 3914
116c20d2
NC		 3915 relocatable = finfo->info->relocatable;
3916 syms = obj_aout_external_syms (input_bfd);
3917 strings = obj_aout_external_strings (input_bfd);
3918 sym_hashes = obj_aout_sym_hashes (input_bfd);
252b5132 3919 symbol_map = finfo->symbol_map;
116c20d2
NC		 3920
3921 reloc_count = rel_size / RELOC_STD_SIZE;
3922 rel = relocs;
3923 rel_end = rel + reloc_count;
3924 for (; rel < rel_end; rel++)
252b5132 3925 {
116c20d2
NC		 3926 bfd_vma r_addr;
3927 int r_index;
3928 int r_extern;
3929 int r_pcrel;
3930 int r_baserel = 0;
3931 reloc_howto_type *howto;
3932 struct aout_link_hash_entry *h = NULL;
3933 bfd_vma relocation;
3934 bfd_reloc_status_type r;
252b5132 3935
116c20d2 3936 r_addr = GET_SWORD (input_bfd, rel->r_address);
252b5132 3937
116c20d2
NC		 3938#ifdef MY_reloc_howto
3939 howto = MY_reloc_howto (input_bfd, rel, r_index, r_extern, r_pcrel);
3940#else
3941 {
3942 int r_jmptable;
3943 int r_relative;
3944 int r_length;
3945 unsigned int howto_idx;
252b5132 3946
116c20d2
NC		 3947 if (bfd_header_big_endian (input_bfd))
3948 {
3949 r_index = (((unsigned int) rel->r_index[0] << 16)
3950 | ((unsigned int) rel->r_index[1] << 8)
3951 | rel->r_index[2]);
3952 r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
3953 r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
3954 r_baserel = (0 != (rel->r_type[0] & RELOC_STD_BITS_BASEREL_BIG));
3955 r_jmptable= (0 != (rel->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG));
3956 r_relative= (0 != (rel->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG));
3957 r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_BIG)
3958 >> RELOC_STD_BITS_LENGTH_SH_BIG);
3959 }
3960 else
3961 {
3962 r_index = (((unsigned int) rel->r_index[2] << 16)
3963 | ((unsigned int) rel->r_index[1] << 8)
3964 | rel->r_index[0]);
3965 r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
3966 r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
3967 r_baserel = (0 != (rel->r_type[0]
3968 & RELOC_STD_BITS_BASEREL_LITTLE));
3969 r_jmptable= (0 != (rel->r_type[0]
3970 & RELOC_STD_BITS_JMPTABLE_LITTLE));
3971 r_relative= (0 != (rel->r_type[0]
3972 & RELOC_STD_BITS_RELATIVE_LITTLE));
3973 r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE)
3974 >> RELOC_STD_BITS_LENGTH_SH_LITTLE);
3975 }
252b5132 3976
116c20d2
NC		 3977 howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel
3978 + 16 * r_jmptable + 32 * r_relative);
ad756e3f
AM		 3979 if (howto_idx < TABLE_SIZE (howto_table_std))
3980 howto = howto_table_std + howto_idx;
3981 else
3982 howto = NULL;
116c20d2
NC		 3983 }
3984#endif
252b5132 3985
ad756e3f
AM		 3986 if (howto == NULL)
3987 {
3988 (*finfo->info->callbacks->einfo)
3989 (_("%P: %B: unexpected relocation type\n"), input_bfd);
3990 bfd_set_error (bfd_error_bad_value);
3991 return FALSE;
3992 }
3993
116c20d2 3994 if (relocatable)
252b5132 3995 {
116c20d2
NC		 3996 /* We are generating a relocatable output file, and must
3997 modify the reloc accordingly. */
3998 if (r_extern)
252b5132 3999 {
116c20d2
NC		 4000 /* If we know the symbol this relocation is against,
4001 convert it into a relocation against a section. This
4002 is what the native linker does. */
4003 h = sym_hashes[r_index];
4004 if (h != NULL
4005 && (h->root.type == bfd_link_hash_defined
4006 || h->root.type == bfd_link_hash_defweak))
252b5132 4007 {
252b5132
RH		 4008 asection *output_section;
4009
116c20d2
NC		 4010 /* Change the r_extern value. */
4011 if (bfd_header_big_endian (output_bfd))
4012 rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_BIG;
4013 else
4014 rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_LITTLE;
252b5132 4015
116c20d2
NC		 4016 /* Compute a new r_index. */
4017 output_section = h->root.u.def.section->output_section;
252b5132 4018 if (output_section == obj_textsec (output_bfd))
116c20d2 4019 r_index = N_TEXT;
252b5132 4020 else if (output_section == obj_datasec (output_bfd))
116c20d2 4021 r_index = N_DATA;
252b5132 4022 else if (output_section == obj_bsssec (output_bfd))
116c20d2 4023 r_index = N_BSS;
252b5132 4024 else
116c20d2 4025 r_index = N_ABS;
252b5132 4026
116c20d2
NC		 4027 /* Add the symbol value and the section VMA to the
4028 addend stored in the contents. */
4029 relocation = (h->root.u.def.value
4030 + output_section->vma
4031 + h->root.u.def.section->output_offset);
252b5132 4032 }
116c20d2 4033 else
252b5132 4034 {
116c20d2
NC		 4035 /* We must change r_index according to the symbol
4036 map. */
4037 r_index = symbol_map[r_index];
252b5132 4038
116c20d2 4039 if (r_index == -1)
252b5132 4040 {
116c20d2 4041 if (h != NULL)
252b5132 4042 {
116c20d2
NC		 4043 /* We decided to strip this symbol, but it
4044 turns out that we can't. Note that we
4045 lose the other and desc information here.
4046 I don't think that will ever matter for a
4047 global symbol. */
4048 if (h->indx < 0)
252b5132 4049 {
116c20d2
NC		 4050 h->indx = -2;
4051 h->written = FALSE;
4052 if (! aout_link_write_other_symbol (h,
4053 (void *) finfo))
4054 return FALSE;
252b5132 4055 }
116c20d2
NC		 4056 r_index = h->indx;
4057 }
4058 else
4059 {
4060 const char *name;
4061
4062 name = strings + GET_WORD (input_bfd,
4063 syms[r_index].e_strx);
4064 if (! ((*finfo->info->callbacks->unattached_reloc)
4065 (finfo->info, name, input_bfd, input_section,
4066 r_addr)))
4067 return FALSE;
4068 r_index = 0;
252b5132
RH		 4069 }
4070 }
116c20d2
NC		 4071
4072 relocation = 0;
252b5132
RH		 4073 }
4074
116c20d2
NC		 4075 /* Write out the new r_index value. */
4076 if (bfd_header_big_endian (output_bfd))
252b5132 4077 {
116c20d2
NC		 4078 rel->r_index[0] = r_index >> 16;
4079 rel->r_index[1] = r_index >> 8;
4080 rel->r_index[2] = r_index;
252b5132
RH		 4081 }
4082 else
4083 {
116c20d2
NC		 4084 rel->r_index[2] = r_index >> 16;
4085 rel->r_index[1] = r_index >> 8;
4086 rel->r_index[0] = r_index;
252b5132
RH		 4087 }
4088 }
252b5132 4089 else
116c20d2
NC		 4090 {
4091 asection *section;
252b5132 4092
116c20d2
NC		 4093 /* This is a relocation against a section. We must
4094 adjust by the amount that the section moved. */
4095 section = aout_reloc_index_to_section (input_bfd, r_index);
4096 relocation = (section->output_section->vma
4097 + section->output_offset
4098 - section->vma);
4099 }
252b5132 4100
116c20d2
NC		 4101 /* Change the address of the relocation. */
4102 PUT_WORD (output_bfd,
4103 r_addr + input_section->output_offset,
4104 rel->r_address);
252b5132 4105
116c20d2
NC		 4106 /* Adjust a PC relative relocation by removing the reference
4107 to the original address in the section and including the
4108 reference to the new address. */
4109 if (r_pcrel)
4110 relocation -= (input_section->output_section->vma
4111 + input_section->output_offset
4112 - input_section->vma);
e92d460e 4113
116c20d2
NC		 4114#ifdef MY_relocatable_reloc
4115 MY_relocatable_reloc (howto, output_bfd, rel, relocation, r_addr);
4116#endif
252b5132 4117
116c20d2
NC		 4118 if (relocation == 0)
4119 r = bfd_reloc_ok;
4120 else
4121 r = MY_relocate_contents (howto,
4122 input_bfd, relocation,
4123 contents + r_addr);
252b5132 4124 }
116c20d2
NC		 4125 else
4126 {
4127 bfd_boolean hundef;
252b5132 4128
116c20d2
NC		 4129 /* We are generating an executable, and must do a full
4130 relocation. */
4131 hundef = FALSE;
252b5132 4132
116c20d2
NC		 4133 if (r_extern)
4134 {
4135 h = sym_hashes[r_index];
252b5132 4136
116c20d2
NC		 4137 if (h != NULL
4138 && (h->root.type == bfd_link_hash_defined
4139 || h->root.type == bfd_link_hash_defweak))
4140 {
4141 relocation = (h->root.u.def.value
4142 + h->root.u.def.section->output_section->vma
4143 + h->root.u.def.section->output_offset);
4144 }
4145 else if (h != NULL
4146 && h->root.type == bfd_link_hash_undefweak)
4147 relocation = 0;
4148 else
4149 {
4150 hundef = TRUE;
4151 relocation = 0;
4152 }
4153 }
4154 else
4155 {
4156 asection *section;
252b5132 4157
116c20d2
NC		 4158 section = aout_reloc_index_to_section (input_bfd, r_index);
4159 relocation = (section->output_section->vma
4160 + section->output_offset
4161 - section->vma);
4162 if (r_pcrel)
4163 relocation += input_section->vma;
4164 }
252b5132 4165
116c20d2
NC		 4166 if (check_dynamic_reloc != NULL)
4167 {
4168 bfd_boolean skip;
252b5132 4169
116c20d2
NC		 4170 if (! ((*check_dynamic_reloc)
4171 (finfo->info, input_bfd, input_section, h,
4172 (void *) rel, contents, &skip, &relocation)))
4173 return FALSE;
4174 if (skip)
4175 continue;
4176 }
252b5132 4177
116c20d2
NC		 4178 /* Now warn if a global symbol is undefined. We could not
4179 do this earlier, because check_dynamic_reloc might want
4180 to skip this reloc. */
4181 if (hundef && ! finfo->info->shared && ! r_baserel)
4182 {
4183 const char *name;
252b5132 4184
116c20d2
NC		 4185 if (h != NULL)
4186 name = h->root.root.string;
4187 else
4188 name = strings + GET_WORD (input_bfd, syms[r_index].e_strx);
4189 if (! ((*finfo->info->callbacks->undefined_symbol)
4190 (finfo->info, name, input_bfd, input_section,
4191 r_addr, TRUE)))
4192 return FALSE;
4193 }
252b5132 4194
116c20d2
NC		 4195 r = MY_final_link_relocate (howto,
4196 input_bfd, input_section,
4197 contents, r_addr, relocation,
4198 (bfd_vma) 0);
252b5132 4199 }
252b5132 4200
116c20d2
NC		 4201 if (r != bfd_reloc_ok)
4202 {
4203 switch (r)
4204 {
4205 default:
4206 case bfd_reloc_outofrange:
4207 abort ();
4208 case bfd_reloc_overflow:
4209 {
4210 const char *name;
252b5132 4211
116c20d2
NC		 4212 if (h != NULL)
4213 name = NULL;
4214 else if (r_extern)
4215 name = strings + GET_WORD (input_bfd,
4216 syms[r_index].e_strx);
4217 else
4218 {
4219 asection *s;
252b5132 4220
116c20d2
NC		 4221 s = aout_reloc_index_to_section (input_bfd, r_index);
4222 name = bfd_section_name (input_bfd, s);
4223 }
4224 if (! ((*finfo->info->callbacks->reloc_overflow)
4225 (finfo->info, (h ? &h->root : NULL), name,
4226 howto->name, (bfd_vma) 0, input_bfd,
4227 input_section, r_addr)))
4228 return FALSE;
4229 }
4230 break;
4231 }
4232 }
252b5132
RH		 4233 }
4234
b34976b6 4235 return TRUE;
252b5132
RH		 4236}
4237
116c20d2 4238/* Relocate an a.out section using extended a.out relocs. */
252b5132 4239
b34976b6 4240static bfd_boolean
116c20d2
NC		 4241aout_link_input_section_ext (struct aout_final_link_info *finfo,
4242 bfd *input_bfd,
4243 asection *input_section,
4244 struct reloc_ext_external *relocs,
4245 bfd_size_type rel_size,
4246 bfd_byte *contents)
252b5132 4247{
b34976b6 4248 bfd_boolean (*check_dynamic_reloc)
116c20d2
NC		 4249 (struct bfd_link_info *, bfd *, asection *,
4250 struct aout_link_hash_entry *, void *, bfd_byte *, bfd_boolean *,
4251 bfd_vma *);
252b5132 4252 bfd *output_bfd;
1049f94e 4253 bfd_boolean relocatable;
252b5132
RH		 4254 struct external_nlist *syms;
4255 char *strings;
4256 struct aout_link_hash_entry **sym_hashes;
4257 int *symbol_map;
4258 bfd_size_type reloc_count;
116c20d2
NC		 4259 struct reloc_ext_external *rel;
4260 struct reloc_ext_external *rel_end;
252b5132
RH		 4261
4262 output_bfd = finfo->output_bfd;
4263 check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc;
4264
116c20d2 4265 BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_EXT_SIZE);
252b5132
RH		 4266 BFD_ASSERT (input_bfd->xvec->header_byteorder
4267 == output_bfd->xvec->header_byteorder);
4268
1049f94e 4269 relocatable = finfo->info->relocatable;
252b5132
RH		 4270 syms = obj_aout_external_syms (input_bfd);
4271 strings = obj_aout_external_strings (input_bfd);
4272 sym_hashes = obj_aout_sym_hashes (input_bfd);
4273 symbol_map = finfo->symbol_map;
4274
116c20d2 4275 reloc_count = rel_size / RELOC_EXT_SIZE;
252b5132
RH		 4276 rel = relocs;
4277 rel_end = rel + reloc_count;
4278 for (; rel < rel_end; rel++)
4279 {
4280 bfd_vma r_addr;
4281 int r_index;
4282 int r_extern;
116c20d2
NC		 4283 unsigned int r_type;
4284 bfd_vma r_addend;
252b5132 4285 struct aout_link_hash_entry *h = NULL;
116c20d2 4286 asection *r_section = NULL;
252b5132 4287 bfd_vma relocation;
252b5132
RH		 4288
4289 r_addr = GET_SWORD (input_bfd, rel->r_address);
4290
116c20d2
NC		 4291 if (bfd_header_big_endian (input_bfd))
4292 {
4293 r_index = (((unsigned int) rel->r_index[0] << 16)
4294 | ((unsigned int) rel->r_index[1] << 8)
4295 | rel->r_index[2]);
4296 r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG));
4297 r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
4298 >> RELOC_EXT_BITS_TYPE_SH_BIG);
4299 }
4300 else
4301 {
4302 r_index = (((unsigned int) rel->r_index[2] << 16)
4303 | ((unsigned int) rel->r_index[1] << 8)
4304 | rel->r_index[0]);
4305 r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE));
4306 r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
4307 >> RELOC_EXT_BITS_TYPE_SH_LITTLE);
4308 }
252b5132 4309
116c20d2 4310 r_addend = GET_SWORD (input_bfd, rel->r_addend);
252b5132 4311
ad756e3f
AM		 4312 if (r_type >= TABLE_SIZE (howto_table_ext))
4313 {
4314 (*finfo->info->callbacks->einfo)
4315 (_("%P: %B: unexpected relocation type\n"), input_bfd);
4316 bfd_set_error (bfd_error_bad_value);
4317 return FALSE;
4318 }
252b5132 4319
1049f94e 4320 if (relocatable)
252b5132 4321 {
1049f94e 4322 /* We are generating a relocatable output file, and must
252b5132 4323 modify the reloc accordingly. */
116c20d2
NC		 4324 if (r_extern
4325 || r_type == (unsigned int) RELOC_BASE10
4326 || r_type == (unsigned int) RELOC_BASE13
4327 || r_type == (unsigned int) RELOC_BASE22)
252b5132
RH		 4328 {
4329 /* If we know the symbol this relocation is against,
4330 convert it into a relocation against a section. This
4331 is what the native linker does. */
116c20d2
NC		 4332 if (r_type == (unsigned int) RELOC_BASE10
4333 || r_type == (unsigned int) RELOC_BASE13
4334 || r_type == (unsigned int) RELOC_BASE22)
4335 h = NULL;
4336 else
4337 h = sym_hashes[r_index];
4338 if (h != NULL
252b5132
RH		 4339 && (h->root.type == bfd_link_hash_defined
4340 || h->root.type == bfd_link_hash_defweak))
4341 {
4342 asection *output_section;
4343
4344 /* Change the r_extern value. */
4345 if (bfd_header_big_endian (output_bfd))
116c20d2 4346 rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_BIG;
252b5132 4347 else
116c20d2 4348 rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_LITTLE;
252b5132
RH		 4349
4350 /* Compute a new r_index. */
4351 output_section = h->root.u.def.section->output_section;
4352 if (output_section == obj_textsec (output_bfd))
4353 r_index = N_TEXT;
4354 else if (output_section == obj_datasec (output_bfd))
4355 r_index = N_DATA;
4356 else if (output_section == obj_bsssec (output_bfd))
4357 r_index = N_BSS;
4358 else
4359 r_index = N_ABS;
4360
4361 /* Add the symbol value and the section VMA to the
116c20d2 4362 addend. */
252b5132
RH		 4363 relocation = (h->root.u.def.value
4364 + output_section->vma
4365 + h->root.u.def.section->output_offset);
116c20d2
NC		 4366
4367 /* Now RELOCATION is the VMA of the final
4368 destination. If this is a PC relative reloc,
4369 then ADDEND is the negative of the source VMA.
4370 We want to set ADDEND to the difference between
4371 the destination VMA and the source VMA, which
4372 means we must adjust RELOCATION by the change in
4373 the source VMA. This is done below. */
252b5132
RH		 4374 }
4375 else
4376 {
4377 /* We must change r_index according to the symbol
4378 map. */
4379 r_index = symbol_map[r_index];
4380
4381 if (r_index == -1)
4382 {
4383 if (h != NULL)
4384 {
4385 /* We decided to strip this symbol, but it
4386 turns out that we can't. Note that we
4387 lose the other and desc information here.
4388 I don't think that will ever matter for a
4389 global symbol. */
4390 if (h->indx < 0)
4391 {
4392 h->indx = -2;
b34976b6 4393 h->written = FALSE;
252b5132 4394 if (! aout_link_write_other_symbol (h,
116c20d2 4395 (void *) finfo))
b34976b6 4396 return FALSE;
252b5132
RH		 4397 }
4398 r_index = h->indx;
4399 }
4400 else
4401 {
4402 const char *name;
4403
4404 name = strings + GET_WORD (input_bfd,
4405 syms[r_index].e_strx);
4406 if (! ((*finfo->info->callbacks->unattached_reloc)
4407 (finfo->info, name, input_bfd, input_section,
4408 r_addr)))
b34976b6 4409 return FALSE;
252b5132
RH		 4410 r_index = 0;
4411 }
4412 }
4413
4414 relocation = 0;
116c20d2
NC		 4415
4416 /* If this is a PC relative reloc, then the addend
4417 is the negative of the source VMA. We must
4418 adjust it by the change in the source VMA. This
4419 is done below. */
252b5132
RH		 4420 }
4421
4422 /* Write out the new r_index value. */
4423 if (bfd_header_big_endian (output_bfd))
4424 {
4425 rel->r_index[0] = r_index >> 16;
4426 rel->r_index[1] = r_index >> 8;
4427 rel->r_index[2] = r_index;
4428 }
4429 else
4430 {
4431 rel->r_index[2] = r_index >> 16;
4432 rel->r_index[1] = r_index >> 8;
4433 rel->r_index[0] = r_index;
4434 }
4435 }
4436 else
4437 {
252b5132
RH		 4438 /* This is a relocation against a section. We must
4439 adjust by the amount that the section moved. */
116c20d2
NC		 4440 r_section = aout_reloc_index_to_section (input_bfd, r_index);
4441 relocation = (r_section->output_section->vma
4442 + r_section->output_offset
4443 - r_section->vma);
252b5132 4444
116c20d2
NC		 4445 /* If this is a PC relative reloc, then the addend is
4446 the difference in VMA between the destination and the
4447 source. We have just adjusted for the change in VMA
4448 of the destination, so we must also adjust by the
4449 change in VMA of the source. This is done below. */
4450 }
252b5132 4451
116c20d2
NC		 4452 /* As described above, we must always adjust a PC relative
4453 reloc by the change in VMA of the source. However, if
4454 pcrel_offset is set, then the addend does not include the
4455 location within the section, in which case we don't need
4456 to adjust anything. */
4457 if (howto_table_ext[r_type].pc_relative
4458 && ! howto_table_ext[r_type].pcrel_offset)
252b5132
RH		 4459 relocation -= (input_section->output_section->vma
4460 + input_section->output_offset
4461 - input_section->vma);
4462
116c20d2
NC		 4463 /* Change the addend if necessary. */
4464 if (relocation != 0)
4465 PUT_WORD (output_bfd, r_addend + relocation, rel->r_addend);
252b5132 4466
116c20d2
NC		 4467 /* Change the address of the relocation. */
4468 PUT_WORD (output_bfd,
4469 r_addr + input_section->output_offset,
4470 rel->r_address);
252b5132
RH		 4471 }
4472 else
4473 {
b34976b6 4474 bfd_boolean hundef;
116c20d2 4475 bfd_reloc_status_type r;
252b5132
RH		 4476
4477 /* We are generating an executable, and must do a full
4478 relocation. */
b34976b6 4479 hundef = FALSE;
252b5132
RH		 4480
4481 if (r_extern)
4482 {
4483 h = sym_hashes[r_index];
4484
116c20d2 4485 if (h != NULL
252b5132
RH		 4486 && (h->root.type == bfd_link_hash_defined
4487 || h->root.type == bfd_link_hash_defweak))
4488 {
4489 relocation = (h->root.u.def.value
4490 + h->root.u.def.section->output_section->vma
4491 + h->root.u.def.section->output_offset);
4492 }
116c20d2 4493 else if (h != NULL
252b5132
RH		 4494 && h->root.type == bfd_link_hash_undefweak)
4495 relocation = 0;
4496 else
4497 {
b34976b6 4498 hundef = TRUE;
252b5132
RH		 4499 relocation = 0;
4500 }
4501 }
116c20d2
NC		 4502 else if (r_type == (unsigned int) RELOC_BASE10
4503 || r_type == (unsigned int) RELOC_BASE13
4504 || r_type == (unsigned int) RELOC_BASE22)
4505 {
4506 struct external_nlist *sym;
4507 int type;
4508
4509 /* For base relative relocs, r_index is always an index
4510 into the symbol table, even if r_extern is 0. */
4511 sym = syms + r_index;
4512 type = H_GET_8 (input_bfd, sym->e_type);
4513 if ((type & N_TYPE) == N_TEXT
4514 || type == N_WEAKT)
4515 r_section = obj_textsec (input_bfd);
4516 else if ((type & N_TYPE) == N_DATA
4517 || type == N_WEAKD)
4518 r_section = obj_datasec (input_bfd);
4519 else if ((type & N_TYPE) == N_BSS
4520 || type == N_WEAKB)
4521 r_section = obj_bsssec (input_bfd);
4522 else if ((type & N_TYPE) == N_ABS
4523 || type == N_WEAKA)
4524 r_section = bfd_abs_section_ptr;
4525 else
4526 abort ();
4527 relocation = (r_section->output_section->vma
4528 + r_section->output_offset
4529 + (GET_WORD (input_bfd, sym->e_value)
4530 - r_section->vma));
4531 }
252b5132
RH		 4532 else
4533 {
116c20d2 4534 r_section = aout_reloc_index_to_section (input_bfd, r_index);
252b5132 4535
116c20d2
NC		 4536 /* If this is a PC relative reloc, then R_ADDEND is the
4537 difference between the two vmas, or
4538 old_dest_sec + old_dest_off - (old_src_sec + old_src_off)
4539 where
4540 old_dest_sec == section->vma
4541 and
4542 old_src_sec == input_section->vma
4543 and
4544 old_src_off == r_addr
4545
4546 _bfd_final_link_relocate expects RELOCATION +
4547 R_ADDEND to be the VMA of the destination minus
4548 r_addr (the minus r_addr is because this relocation
4549 is not pcrel_offset, which is a bit confusing and
4550 should, perhaps, be changed), or
4551 new_dest_sec
4552 where
4553 new_dest_sec == output_section->vma + output_offset
4554 We arrange for this to happen by setting RELOCATION to
4555 new_dest_sec + old_src_sec - old_dest_sec
4556
4557 If this is not a PC relative reloc, then R_ADDEND is
4558 simply the VMA of the destination, so we set
4559 RELOCATION to the change in the destination VMA, or
4560 new_dest_sec - old_dest_sec
4561 */
4562 relocation = (r_section->output_section->vma
4563 + r_section->output_offset
4564 - r_section->vma);
4565 if (howto_table_ext[r_type].pc_relative)
252b5132
RH		 4566 relocation += input_section->vma;
4567 }
4568
4569 if (check_dynamic_reloc != NULL)
4570 {
b34976b6 4571 bfd_boolean skip;
252b5132
RH		 4572
4573 if (! ((*check_dynamic_reloc)
4574 (finfo->info, input_bfd, input_section, h,
116c20d2 4575 (void *) rel, contents, &skip, &relocation)))
b34976b6 4576 return FALSE;
252b5132
RH		 4577 if (skip)
4578 continue;
4579 }
4580
4581 /* Now warn if a global symbol is undefined. We could not
4582 do this earlier, because check_dynamic_reloc might want
4583 to skip this reloc. */
116c20d2
NC		 4584 if (hundef
4585 && ! finfo->info->shared
4586 && r_type != (unsigned int) RELOC_BASE10
4587 && r_type != (unsigned int) RELOC_BASE13
4588 && r_type != (unsigned int) RELOC_BASE22)
252b5132
RH		 4589 {
4590 const char *name;
4591
4592 if (h != NULL)
4593 name = h->root.root.string;
4594 else
4595 name = strings + GET_WORD (input_bfd, syms[r_index].e_strx);
4596 if (! ((*finfo->info->callbacks->undefined_symbol)
5cc7c785 4597 (finfo->info, name, input_bfd, input_section,
b34976b6
AM		 4598 r_addr, TRUE)))
4599 return FALSE;
252b5132
RH		 4600 }
4601
116c20d2
NC		 4602 if (r_type != (unsigned int) RELOC_SPARC_REV32)
4603 r = MY_final_link_relocate (howto_table_ext + r_type,
4604 input_bfd, input_section,
4605 contents, r_addr, relocation,
4606 r_addend);
4607 else
252b5132 4608 {
116c20d2 4609 bfd_vma x;
252b5132 4610
116c20d2
NC		 4611 x = bfd_get_32 (input_bfd, contents + r_addr);
4612 x = x + relocation + r_addend;
4613 bfd_putl32 (/*input_bfd,*/ x, contents + r_addr);
4614 r = bfd_reloc_ok;
4615 }
4616
4617 if (r != bfd_reloc_ok)
4618 {
4619 switch (r)
4620 {
4621 default:
4622 case bfd_reloc_outofrange:
4623 abort ();
4624 case bfd_reloc_overflow:
252b5132 4625 {
116c20d2 4626 const char *name;
252b5132 4627
116c20d2
NC		 4628 if (h != NULL)
4629 name = NULL;
4630 else if (r_extern
4631 || r_type == (unsigned int) RELOC_BASE10
4632 || r_type == (unsigned int) RELOC_BASE13
4633 || r_type == (unsigned int) RELOC_BASE22)
4634 name = strings + GET_WORD (input_bfd,
4635 syms[r_index].e_strx);
4636 else
4637 {
4638 asection *s;
4639
4640 s = aout_reloc_index_to_section (input_bfd, r_index);
4641 name = bfd_section_name (input_bfd, s);
4642 }
4643 if (! ((*finfo->info->callbacks->reloc_overflow)
4644 (finfo->info, (h ? &h->root : NULL), name,
4645 howto_table_ext[r_type].name,
4646 r_addend, input_bfd, input_section, r_addr)))
4647 return FALSE;
252b5132 4648 }
116c20d2
NC		 4649 break;
4650 }
252b5132
RH		 4651 }
4652 }
4653 }
4654
b34976b6 4655 return TRUE;
252b5132
RH		 4656}
4657
116c20d2
NC		 4658/* Link an a.out section into the output file. */
4659
4660static bfd_boolean
4661aout_link_input_section (struct aout_final_link_info *finfo,
4662 bfd *input_bfd,
4663 asection *input_section,
4664 file_ptr *reloff_ptr,
4665 bfd_size_type rel_size)
4666{
4667 bfd_size_type input_size;
4668 void * relocs;
4669
4670 /* Get the section contents. */
4671 input_size = input_section->size;
4672 if (! bfd_get_section_contents (input_bfd, input_section,
4673 (void *) finfo->contents,
4674 (file_ptr) 0, input_size))
4675 return FALSE;
4676
4677 /* Read in the relocs if we haven't already done it. */
4678 if (aout_section_data (input_section) != NULL
4679 && aout_section_data (input_section)->relocs != NULL)
4680 relocs = aout_section_data (input_section)->relocs;
4681 else
4682 {
4683 relocs = finfo->relocs;
4684 if (rel_size > 0)
4685 {
4686 if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0
4687 || bfd_bread (relocs, rel_size, input_bfd) != rel_size)
4688 return FALSE;
4689 }
4690 }
4691
4692 /* Relocate the section contents. */
4693 if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE)
4694 {
4695 if (! aout_link_input_section_std (finfo, input_bfd, input_section,
4696 (struct reloc_std_external *) relocs,
4697 rel_size, finfo->contents))
4698 return FALSE;
4699 }
4700 else
4701 {
4702 if (! aout_link_input_section_ext (finfo, input_bfd, input_section,
4703 (struct reloc_ext_external *) relocs,
4704 rel_size, finfo->contents))
4705 return FALSE;
4706 }
4707
4708 /* Write out the section contents. */
4709 if (! bfd_set_section_contents (finfo->output_bfd,
4710 input_section->output_section,
4711 (void *) finfo->contents,
4712 (file_ptr) input_section->output_offset,
4713 input_size))
4714 return FALSE;
4715
4716 /* If we are producing relocatable output, the relocs were
4717 modified, and we now write them out. */
4718 if (finfo->info->relocatable && rel_size > 0)
4719 {
4720 if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0)
4721 return FALSE;
4722 if (bfd_bwrite (relocs, rel_size, finfo->output_bfd) != rel_size)
4723 return FALSE;
4724 *reloff_ptr += rel_size;
4725
4726 /* Assert that the relocs have not run into the symbols, and
4727 that if these are the text relocs they have not run into the
4728 data relocs. */
4729 BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd)
4730 && (reloff_ptr != &finfo->treloff
4731 || (*reloff_ptr
4732 <= obj_datasec (finfo->output_bfd)->rel_filepos)));
4733 }
4734
4735 return TRUE;
4736}
4737
4738/* Adjust and write out the symbols for an a.out file. Set the new
4739 symbol indices into a symbol_map. */
252b5132 4740
b34976b6 4741static bfd_boolean
116c20d2 4742aout_link_write_symbols (struct aout_final_link_info *finfo, bfd *input_bfd)
252b5132 4743{
252b5132 4744 bfd *output_bfd;
116c20d2 4745 bfd_size_type sym_count;
252b5132 4746 char *strings;
116c20d2
NC		 4747 enum bfd_link_strip strip;
4748 enum bfd_link_discard discard;
4749 struct external_nlist *outsym;
4750 bfd_size_type strtab_index;
4751 struct external_nlist *sym;
4752 struct external_nlist *sym_end;
4753 struct aout_link_hash_entry **sym_hash;
252b5132 4754 int *symbol_map;
116c20d2
NC		 4755 bfd_boolean pass;
4756 bfd_boolean skip_next;
252b5132
RH		 4757
4758 output_bfd = finfo->output_bfd;
116c20d2
NC		 4759 sym_count = obj_aout_external_sym_count (input_bfd);
4760 strings = obj_aout_external_strings (input_bfd);
4761 strip = finfo->info->strip;
4762 discard = finfo->info->discard;
4763 outsym = finfo->output_syms;
252b5132 4764
116c20d2
NC		 4765 /* First write out a symbol for this object file, unless we are
4766 discarding such symbols. */
4767 if (strip != strip_all
4768 && (strip != strip_some
4769 || bfd_hash_lookup (finfo->info->keep_hash, input_bfd->filename,
4770 FALSE, FALSE) != NULL)
4771 && discard != discard_all)
4772 {
4773 H_PUT_8 (output_bfd, N_TEXT, outsym->e_type);
4774 H_PUT_8 (output_bfd, 0, outsym->e_other);
4775 H_PUT_16 (output_bfd, 0, outsym->e_desc);
4776 strtab_index = add_to_stringtab (output_bfd, finfo->strtab,
4777 input_bfd->filename, FALSE);
4778 if (strtab_index == (bfd_size_type) -1)
4779 return FALSE;
4780 PUT_WORD (output_bfd, strtab_index, outsym->e_strx);
4781 PUT_WORD (output_bfd,
4782 (bfd_get_section_vma (output_bfd,
4783 obj_textsec (input_bfd)->output_section)
4784 + obj_textsec (input_bfd)->output_offset),
4785 outsym->e_value);
4786 ++obj_aout_external_sym_count (output_bfd);
4787 ++outsym;
4788 }
252b5132 4789
116c20d2
NC		 4790 pass = FALSE;
4791 skip_next = FALSE;
4792 sym = obj_aout_external_syms (input_bfd);
4793 sym_end = sym + sym_count;
4794 sym_hash = obj_aout_sym_hashes (input_bfd);
252b5132 4795 symbol_map = finfo->symbol_map;
116c20d2
NC		 4796 memset (symbol_map, 0, (size_t) sym_count * sizeof *symbol_map);
4797 for (; sym < sym_end; sym++, sym_hash++, symbol_map++)
252b5132 4798 {
116c20d2
NC		 4799 const char *name;
4800 int type;
4801 struct aout_link_hash_entry *h;
4802 bfd_boolean skip;
4803 asection *symsec;
4804 bfd_vma val = 0;
4805 bfd_boolean copy;
252b5132 4806
116c20d2
NC		 4807 /* We set *symbol_map to 0 above for all symbols. If it has
4808 already been set to -1 for this symbol, it means that we are
4809 discarding it because it appears in a duplicate header file.
4810 See the N_BINCL code below. */
4811 if (*symbol_map == -1)
4812 continue;
252b5132 4813
116c20d2
NC		 4814 /* Initialize *symbol_map to -1, which means that the symbol was
4815 not copied into the output file. We will change it later if
4816 we do copy the symbol over. */
4817 *symbol_map = -1;
4818
4819 type = H_GET_8 (input_bfd, sym->e_type);
4820 name = strings + GET_WORD (input_bfd, sym->e_strx);
4821
4822 h = NULL;
4823
4824 if (pass)
252b5132 4825 {
116c20d2
NC		 4826 /* Pass this symbol through. It is the target of an
4827 indirect or warning symbol. */
4828 val = GET_WORD (input_bfd, sym->e_value);
4829 pass = FALSE;
252b5132 4830 }
116c20d2 4831 else if (skip_next)
252b5132 4832 {
116c20d2
NC		 4833 /* Skip this symbol, which is the target of an indirect
4834 symbol that we have changed to no longer be an indirect
4835 symbol. */
4836 skip_next = FALSE;
4837 continue;
252b5132 4838 }
116c20d2
NC		 4839 else
4840 {
4841 struct aout_link_hash_entry *hresolve;
252b5132 4842
116c20d2
NC		 4843 /* We have saved the hash table entry for this symbol, if
4844 there is one. Note that we could just look it up again
4845 in the hash table, provided we first check that it is an
4846 external symbol. */
4847 h = *sym_hash;
252b5132 4848
116c20d2
NC		 4849 /* Use the name from the hash table, in case the symbol was
4850 wrapped. */
4851 if (h != NULL
4852 && h->root.type != bfd_link_hash_warning)
4853 name = h->root.root.string;
252b5132 4854
116c20d2
NC		 4855 /* If this is an indirect or warning symbol, then change
4856 hresolve to the base symbol. We also change *sym_hash so
4857 that the relocation routines relocate against the real
4858 symbol. */
4859 hresolve = h;
4860 if (h != (struct aout_link_hash_entry *) NULL
4861 && (h->root.type == bfd_link_hash_indirect
4862 || h->root.type == bfd_link_hash_warning))
252b5132 4863 {
116c20d2
NC		 4864 hresolve = (struct aout_link_hash_entry *) h->root.u.i.link;
4865 while (hresolve->root.type == bfd_link_hash_indirect
4866 || hresolve->root.type == bfd_link_hash_warning)
4867 hresolve = ((struct aout_link_hash_entry *)
4868 hresolve->root.u.i.link);
4869 *sym_hash = hresolve;
4870 }
4871
4872 /* If the symbol has already been written out, skip it. */
4873 if (h != NULL
4874 && h->written)
4875 {
4876 if ((type & N_TYPE) == N_INDR
4877 || type == N_WARNING)
4878 skip_next = TRUE;
4879 *symbol_map = h->indx;
4880 continue;
4881 }
4882
4883 /* See if we are stripping this symbol. */
4884 skip = FALSE;
4885 switch (strip)
4886 {
4887 case strip_none:
4888 break;
4889 case strip_debugger:
4890 if ((type & N_STAB) != 0)
4891 skip = TRUE;
4892 break;
4893 case strip_some:
4894 if (bfd_hash_lookup (finfo->info->keep_hash, name, FALSE, FALSE)
4895 == NULL)
4896 skip = TRUE;
4897 break;
4898 case strip_all:
4899 skip = TRUE;
4900 break;
4901 }
4902 if (skip)
4903 {
4904 if (h != NULL)
4905 h->written = TRUE;
4906 continue;
4907 }
4908
4909 /* Get the value of the symbol. */
4910 if ((type & N_TYPE) == N_TEXT
4911 || type == N_WEAKT)
4912 symsec = obj_textsec (input_bfd);
4913 else if ((type & N_TYPE) == N_DATA
4914 || type == N_WEAKD)
4915 symsec = obj_datasec (input_bfd);
4916 else if ((type & N_TYPE) == N_BSS
4917 || type == N_WEAKB)
4918 symsec = obj_bsssec (input_bfd);
4919 else if ((type & N_TYPE) == N_ABS
4920 || type == N_WEAKA)
4921 symsec = bfd_abs_section_ptr;
4922 else if (((type & N_TYPE) == N_INDR
4923 && (hresolve == NULL
4924 || (hresolve->root.type != bfd_link_hash_defined
4925 && hresolve->root.type != bfd_link_hash_defweak
4926 && hresolve->root.type != bfd_link_hash_common)))
4927 || type == N_WARNING)
4928 {
4929 /* Pass the next symbol through unchanged. The
4930 condition above for indirect symbols is so that if
4931 the indirect symbol was defined, we output it with
4932 the correct definition so the debugger will
4933 understand it. */
4934 pass = TRUE;
4935 val = GET_WORD (input_bfd, sym->e_value);
4936 symsec = NULL;
4937 }
4938 else if ((type & N_STAB) != 0)
4939 {
4940 val = GET_WORD (input_bfd, sym->e_value);
4941 symsec = NULL;
4942 }
4943 else
4944 {
4945 /* If we get here with an indirect symbol, it means that
4946 we are outputting it with a real definition. In such
4947 a case we do not want to output the next symbol,
4948 which is the target of the indirection. */
4949 if ((type & N_TYPE) == N_INDR)
4950 skip_next = TRUE;
4951
4952 symsec = NULL;
4953
4954 /* We need to get the value from the hash table. We use
4955 hresolve so that if we have defined an indirect
4956 symbol we output the final definition. */
4957 if (h == NULL)
4958 {
4959 switch (type & N_TYPE)
4960 {
4961 case N_SETT:
4962 symsec = obj_textsec (input_bfd);
4963 break;
4964 case N_SETD:
4965 symsec = obj_datasec (input_bfd);
4966 break;
4967 case N_SETB:
4968 symsec = obj_bsssec (input_bfd);
4969 break;
4970 case N_SETA:
4971 symsec = bfd_abs_section_ptr;
4972 break;
4973 default:
4974 val = 0;
4975 break;
4976 }
4977 }
4978 else if (hresolve->root.type == bfd_link_hash_defined
4979 || hresolve->root.type == bfd_link_hash_defweak)
252b5132 4980 {
116c20d2 4981 asection *input_section;
252b5132
RH		 4982 asection *output_section;
4983
116c20d2
NC		 4984 /* This case usually means a common symbol which was
4985 turned into a defined symbol. */
4986 input_section = hresolve->root.u.def.section;
4987 output_section = input_section->output_section;
4988 BFD_ASSERT (bfd_is_abs_section (output_section)
4989 || output_section->owner == output_bfd);
4990 val = (hresolve->root.u.def.value
4991 + bfd_get_section_vma (output_bfd, output_section)
4992 + input_section->output_offset);
4993
4994 /* Get the correct type based on the section. If
4995 this is a constructed set, force it to be
4996 globally visible. */
4997 if (type == N_SETT
4998 || type == N_SETD
4999 || type == N_SETB
5000 || type == N_SETA)
5001 type |= N_EXT;
5002
5003 type &=~ N_TYPE;
252b5132 5004
252b5132 5005 if (output_section == obj_textsec (output_bfd))
116c20d2
NC		 5006 type |= (hresolve->root.type == bfd_link_hash_defined
5007 ? N_TEXT
5008 : N_WEAKT);
252b5132 5009 else if (output_section == obj_datasec (output_bfd))
116c20d2
NC		 5010 type |= (hresolve->root.type == bfd_link_hash_defined
5011 ? N_DATA
5012 : N_WEAKD);
252b5132 5013 else if (output_section == obj_bsssec (output_bfd))
116c20d2
NC		 5014 type |= (hresolve->root.type == bfd_link_hash_defined
5015 ? N_BSS
5016 : N_WEAKB);
252b5132 5017 else
116c20d2
NC		 5018 type |= (hresolve->root.type == bfd_link_hash_defined
5019 ? N_ABS
5020 : N_WEAKA);
5021 }
5022 else if (hresolve->root.type == bfd_link_hash_common)
5023 val = hresolve->root.u.c.size;
5024 else if (hresolve->root.type == bfd_link_hash_undefweak)
5025 {
5026 val = 0;
5027 type = N_WEAKU;
252b5132
RH		 5028 }
5029 else
116c20d2
NC		 5030 val = 0;
5031 }
5032 if (symsec != NULL)
5033 val = (symsec->output_section->vma
5034 + symsec->output_offset
5035 + (GET_WORD (input_bfd, sym->e_value)
5036 - symsec->vma));
5037
5038 /* If this is a global symbol set the written flag, and if
5039 it is a local symbol see if we should discard it. */
5040 if (h != NULL)
5041 {
5042 h->written = TRUE;
5043 h->indx = obj_aout_external_sym_count (output_bfd);
5044 }
5045 else if ((type & N_TYPE) != N_SETT
5046 && (type & N_TYPE) != N_SETD
5047 && (type & N_TYPE) != N_SETB
5048 && (type & N_TYPE) != N_SETA)
5049 {
5050 switch (discard)
252b5132 5051 {
116c20d2
NC		 5052 case discard_none:
5053 case discard_sec_merge:
5054 break;
5055 case discard_l:
5056 if ((type & N_STAB) == 0
5057 && bfd_is_local_label_name (input_bfd, name))
5058 skip = TRUE;
5059 break;
5060 case discard_all:
5061 skip = TRUE;
5062 break;
5063 }
5064 if (skip)
5065 {
5066 pass = FALSE;
5067 continue;
5068 }
5069 }
252b5132 5070
116c20d2
NC		 5071 /* An N_BINCL symbol indicates the start of the stabs
5072 entries for a header file. We need to scan ahead to the
5073 next N_EINCL symbol, ignoring nesting, adding up all the
5074 characters in the symbol names, not including the file
5075 numbers in types (the first number after an open
5076 parenthesis). */
5077 if (type == (int) N_BINCL)
5078 {
5079 struct external_nlist *incl_sym;
5080 int nest;
5081 struct aout_link_includes_entry *incl_entry;
5082 struct aout_link_includes_totals *t;
5083
5084 val = 0;
5085 nest = 0;
5086 for (incl_sym = sym + 1; incl_sym < sym_end; incl_sym++)
5087 {
5088 int incl_type;
5089
5090 incl_type = H_GET_8 (input_bfd, incl_sym->e_type);
5091 if (incl_type == (int) N_EINCL)
252b5132 5092 {
116c20d2
NC		 5093 if (nest == 0)
5094 break;
5095 --nest;
5096 }
5097 else if (incl_type == (int) N_BINCL)
5098 ++nest;
5099 else if (nest == 0)
5100 {
5101 const char *s;
5102
5103 s = strings + GET_WORD (input_bfd, incl_sym->e_strx);
5104 for (; *s != '\0'; s++)
252b5132 5105 {
116c20d2
NC		 5106 val += *s;
5107 if (*s == '(')
252b5132 5108 {
116c20d2
NC		 5109 /* Skip the file number. */
5110 ++s;
5111 while (ISDIGIT (*s))
5112 ++s;
5113 --s;
252b5132 5114 }
252b5132 5115 }
116c20d2
NC		 5116 }
5117 }
252b5132 5118
116c20d2
NC		 5119 /* If we have already included a header file with the
5120 same value, then replace this one with an N_EXCL
5121 symbol. */
5122 copy = (bfd_boolean) (! finfo->info->keep_memory);
5123 incl_entry = aout_link_includes_lookup (&finfo->includes,
5124 name, TRUE, copy);
5125 if (incl_entry == NULL)
5126 return FALSE;
5127 for (t = incl_entry->totals; t != NULL; t = t->next)
5128 if (t->total == val)
5129 break;
5130 if (t == NULL)
5131 {
5132 /* This is the first time we have seen this header
5133 file with this set of stabs strings. */
5134 t = bfd_hash_allocate (&finfo->includes.root,
5135 sizeof *t);
5136 if (t == NULL)
5137 return FALSE;
5138 t->total = val;
5139 t->next = incl_entry->totals;
5140 incl_entry->totals = t;
5141 }
5142 else
5143 {
5144 int *incl_map;
5145
5146 /* This is a duplicate header file. We must change
5147 it to be an N_EXCL entry, and mark all the
5148 included symbols to prevent outputting them. */
5149 type = (int) N_EXCL;
5150
5151 nest = 0;
5152 for (incl_sym = sym + 1, incl_map = symbol_map + 1;
5153 incl_sym < sym_end;
5154 incl_sym++, incl_map++)
5155 {
5156 int incl_type;
5157
5158 incl_type = H_GET_8 (input_bfd, incl_sym->e_type);
5159 if (incl_type == (int) N_EINCL)
5160 {
5161 if (nest == 0)
5162 {
5163 *incl_map = -1;
5164 break;
5165 }
5166 --nest;
252b5132 5167 }
116c20d2
NC		 5168 else if (incl_type == (int) N_BINCL)
5169 ++nest;
5170 else if (nest == 0)
5171 *incl_map = -1;
252b5132 5172 }
252b5132
RH		 5173 }
5174 }
116c20d2
NC		 5175 }
5176
5177 /* Copy this symbol into the list of symbols we are going to
5178 write out. */
5179 H_PUT_8 (output_bfd, type, outsym->e_type);
5180 H_PUT_8 (output_bfd, H_GET_8 (input_bfd, sym->e_other), outsym->e_other);
5181 H_PUT_16 (output_bfd, H_GET_16 (input_bfd, sym->e_desc), outsym->e_desc);
5182 copy = FALSE;
5183 if (! finfo->info->keep_memory)
5184 {
5185 /* name points into a string table which we are going to
5186 free. If there is a hash table entry, use that string.
5187 Otherwise, copy name into memory. */
5188 if (h != NULL)
5189 name = h->root.root.string;
252b5132 5190 else
116c20d2
NC		 5191 copy = TRUE;
5192 }
5193 strtab_index = add_to_stringtab (output_bfd, finfo->strtab,
5194 name, copy);
5195 if (strtab_index == (bfd_size_type) -1)
5196 return FALSE;
5197 PUT_WORD (output_bfd, strtab_index, outsym->e_strx);
5198 PUT_WORD (output_bfd, val, outsym->e_value);
5199 *symbol_map = obj_aout_external_sym_count (output_bfd);
5200 ++obj_aout_external_sym_count (output_bfd);
5201 ++outsym;
5202 }
252b5132 5203
116c20d2
NC		 5204 /* Write out the output symbols we have just constructed. */
5205 if (outsym > finfo->output_syms)
5206 {
5207 bfd_size_type outsym_size;
252b5132 5208
116c20d2
NC		 5209 if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0)
5210 return FALSE;
5211 outsym_size = outsym - finfo->output_syms;
5212 outsym_size *= EXTERNAL_NLIST_SIZE;
5213 if (bfd_bwrite ((void *) finfo->output_syms, outsym_size, output_bfd)
5214 != outsym_size)
5215 return FALSE;
5216 finfo->symoff += outsym_size;
5217 }
252b5132 5218
116c20d2
NC		 5219 return TRUE;
5220}
252b5132 5221
116c20d2 5222/* Link an a.out input BFD into the output file. */
252b5132 5223
116c20d2
NC		 5224static bfd_boolean
5225aout_link_input_bfd (struct aout_final_link_info *finfo, bfd *input_bfd)
5226{
5227 bfd_size_type sym_count;
252b5132 5228
116c20d2 5229 BFD_ASSERT (bfd_get_format (input_bfd) == bfd_object);
252b5132 5230
116c20d2
NC		 5231 /* If this is a dynamic object, it may need special handling. */
5232 if ((input_bfd->flags & DYNAMIC) != 0
5233 && aout_backend_info (input_bfd)->link_dynamic_object != NULL)
5234 return ((*aout_backend_info (input_bfd)->link_dynamic_object)
5235 (finfo->info, input_bfd));
252b5132 5236
116c20d2
NC		 5237 /* Get the symbols. We probably have them already, unless
5238 finfo->info->keep_memory is FALSE. */
5239 if (! aout_get_external_symbols (input_bfd))
5240 return FALSE;
252b5132 5241
116c20d2 5242 sym_count = obj_aout_external_sym_count (input_bfd);
252b5132 5243
116c20d2
NC		 5244 /* Write out the symbols and get a map of the new indices. The map
5245 is placed into finfo->symbol_map. */
5246 if (! aout_link_write_symbols (finfo, input_bfd))
5247 return FALSE;
252b5132 5248
116c20d2
NC		 5249 /* Relocate and write out the sections. These functions use the
5250 symbol map created by aout_link_write_symbols. The linker_mark
5251 field will be set if these sections are to be included in the
5252 link, which will normally be the case. */
5253 if (obj_textsec (input_bfd)->linker_mark)
5254 {
5255 if (! aout_link_input_section (finfo, input_bfd,
5256 obj_textsec (input_bfd),
5257 &finfo->treloff,
5258 exec_hdr (input_bfd)->a_trsize))
5259 return FALSE;
5260 }
5261 if (obj_datasec (input_bfd)->linker_mark)
5262 {
5263 if (! aout_link_input_section (finfo, input_bfd,
5264 obj_datasec (input_bfd),
5265 &finfo->dreloff,
5266 exec_hdr (input_bfd)->a_drsize))
5267 return FALSE;
5268 }
5269
5270 /* If we are not keeping memory, we don't need the symbols any
5271 longer. We still need them if we are keeping memory, because the
5272 strings in the hash table point into them. */
5273 if (! finfo->info->keep_memory)
5274 {
5275 if (! aout_link_free_symbols (input_bfd))
5276 return FALSE;
5277 }
5278
5279 return TRUE;
5280}
5281
5282/* Do the final link step. This is called on the output BFD. The
5283 INFO structure should point to a list of BFDs linked through the
5284 link_next field which can be used to find each BFD which takes part
5285 in the output. Also, each section in ABFD should point to a list
5286 of bfd_link_order structures which list all the input sections for
5287 the output section. */
5288
5289bfd_boolean
5290NAME (aout, final_link) (bfd *abfd,
5291 struct bfd_link_info *info,
5292 void (*callback) (bfd *, file_ptr *, file_ptr *, file_ptr *))
5293{
5294 struct aout_final_link_info aout_info;
5295 bfd_boolean includes_hash_initialized = FALSE;
5296 bfd *sub;
5297 bfd_size_type trsize, drsize;
5298 bfd_size_type max_contents_size;
5299 bfd_size_type max_relocs_size;
5300 bfd_size_type max_sym_count;
5301 bfd_size_type text_size;
5302 file_ptr text_end;
5303 struct bfd_link_order *p;
5304 asection *o;
5305 bfd_boolean have_link_order_relocs;
5306
5307 if (info->shared)
5308 abfd->flags |= DYNAMIC;
5309
5310 aout_info.info = info;
5311 aout_info.output_bfd = abfd;
5312 aout_info.contents = NULL;
5313 aout_info.relocs = NULL;
5314 aout_info.symbol_map = NULL;
5315 aout_info.output_syms = NULL;
252b5132 5316
66eb6687
AM		 5317 if (!bfd_hash_table_init_n (&aout_info.includes.root,
5318 aout_link_includes_newfunc,
5319 sizeof (struct aout_link_includes_entry),
5320 251))
116c20d2
NC		 5321 goto error_return;
5322 includes_hash_initialized = TRUE;
252b5132 5323
116c20d2
NC		 5324 /* Figure out the largest section size. Also, if generating
5325 relocatable output, count the relocs. */
5326 trsize = 0;
5327 drsize = 0;
5328 max_contents_size = 0;
5329 max_relocs_size = 0;
5330 max_sym_count = 0;
5331 for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
5332 {
5333 bfd_size_type sz;
252b5132 5334
116c20d2
NC		 5335 if (info->relocatable)
5336 {
5337 if (bfd_get_flavour (sub) == bfd_target_aout_flavour)
252b5132 5338 {
116c20d2
NC		 5339 trsize += exec_hdr (sub)->a_trsize;
5340 drsize += exec_hdr (sub)->a_drsize;
252b5132 5341 }
252b5132
RH		 5342 else
5343 {
116c20d2
NC		 5344 /* FIXME: We need to identify the .text and .data sections
5345 and call get_reloc_upper_bound and canonicalize_reloc to
5346 work out the number of relocs needed, and then multiply
5347 by the reloc size. */
5348 (*_bfd_error_handler)
5349 (_("%s: relocatable link from %s to %s not supported"),
5350 bfd_get_filename (abfd),
5351 sub->xvec->name, abfd->xvec->name);
5352 bfd_set_error (bfd_error_invalid_operation);
5353 goto error_return;
252b5132 5354 }
116c20d2 5355 }
252b5132 5356
116c20d2
NC		 5357 if (bfd_get_flavour (sub) == bfd_target_aout_flavour)
5358 {
5359 sz = obj_textsec (sub)->size;
5360 if (sz > max_contents_size)
5361 max_contents_size = sz;
5362 sz = obj_datasec (sub)->size;
5363 if (sz > max_contents_size)
5364 max_contents_size = sz;
252b5132 5365
116c20d2
NC		 5366 sz = exec_hdr (sub)->a_trsize;
5367 if (sz > max_relocs_size)
5368 max_relocs_size = sz;
5369 sz = exec_hdr (sub)->a_drsize;
5370 if (sz > max_relocs_size)
5371 max_relocs_size = sz;
252b5132 5372
116c20d2
NC		 5373 sz = obj_aout_external_sym_count (sub);
5374 if (sz > max_sym_count)
5375 max_sym_count = sz;
252b5132
RH		 5376 }
5377 }
5378
116c20d2
NC		 5379 if (info->relocatable)
5380 {
5381 if (obj_textsec (abfd) != NULL)
5382 trsize += (_bfd_count_link_order_relocs (obj_textsec (abfd)
8423293d 5383 ->map_head.link_order)
116c20d2
NC		 5384 * obj_reloc_entry_size (abfd));
5385 if (obj_datasec (abfd) != NULL)
5386 drsize += (_bfd_count_link_order_relocs (obj_datasec (abfd)
8423293d 5387 ->map_head.link_order)
116c20d2
NC		 5388 * obj_reloc_entry_size (abfd));
5389 }
252b5132 5390
116c20d2
NC		 5391 exec_hdr (abfd)->a_trsize = trsize;
5392 exec_hdr (abfd)->a_drsize = drsize;
252b5132 5393
116c20d2 5394 exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd);
252b5132 5395
116c20d2
NC		 5396 /* Adjust the section sizes and vmas according to the magic number.
5397 This sets a_text, a_data and a_bss in the exec_hdr and sets the
5398 filepos for each section. */
5399 if (! NAME (aout, adjust_sizes_and_vmas) (abfd, &text_size, &text_end))
5400 goto error_return;
252b5132 5401
116c20d2
NC		 5402 /* The relocation and symbol file positions differ among a.out
5403 targets. We are passed a callback routine from the backend
5404 specific code to handle this.
5405 FIXME: At this point we do not know how much space the symbol
5406 table will require. This will not work for any (nonstandard)
5407 a.out target that needs to know the symbol table size before it
5408 can compute the relocation file positions. This may or may not
5409 be the case for the hp300hpux target, for example. */
5410 (*callback) (abfd, &aout_info.treloff, &aout_info.dreloff,
5411 &aout_info.symoff);
5412 obj_textsec (abfd)->rel_filepos = aout_info.treloff;
5413 obj_datasec (abfd)->rel_filepos = aout_info.dreloff;
5414 obj_sym_filepos (abfd) = aout_info.symoff;
252b5132 5415
116c20d2
NC		 5416 /* We keep a count of the symbols as we output them. */
5417 obj_aout_external_sym_count (abfd) = 0;
5418
5419 /* We accumulate the string table as we write out the symbols. */
5420 aout_info.strtab = _bfd_stringtab_init ();
5421 if (aout_info.strtab == NULL)
5422 goto error_return;
5423
5424 /* Allocate buffers to hold section contents and relocs. */
5425 aout_info.contents = bfd_malloc (max_contents_size);
5426 aout_info.relocs = bfd_malloc (max_relocs_size);
5427 aout_info.symbol_map = bfd_malloc (max_sym_count * sizeof (int *));
5428 aout_info.output_syms = bfd_malloc ((max_sym_count + 1)
5429 * sizeof (struct external_nlist));
5430 if ((aout_info.contents == NULL && max_contents_size != 0)
5431 || (aout_info.relocs == NULL && max_relocs_size != 0)
5432 || (aout_info.symbol_map == NULL && max_sym_count != 0)
5433 || aout_info.output_syms == NULL)
5434 goto error_return;
5435
5436 /* If we have a symbol named __DYNAMIC, force it out now. This is
5437 required by SunOS. Doing this here rather than in sunos.c is a
5438 hack, but it's easier than exporting everything which would be
5439 needed. */
5440 {
5441 struct aout_link_hash_entry *h;
5442
5443 h = aout_link_hash_lookup (aout_hash_table (info), "__DYNAMIC",
5444 FALSE, FALSE, FALSE);
5445 if (h != NULL)
5446 aout_link_write_other_symbol (h, &aout_info);
5447 }
5448
5449 /* The most time efficient way to do the link would be to read all
5450 the input object files into memory and then sort out the
5451 information into the output file. Unfortunately, that will
5452 probably use too much memory. Another method would be to step
5453 through everything that composes the text section and write it
5454 out, and then everything that composes the data section and write
5455 it out, and then write out the relocs, and then write out the
5456 symbols. Unfortunately, that requires reading stuff from each
5457 input file several times, and we will not be able to keep all the
5458 input files open simultaneously, and reopening them will be slow.
5459
5460 What we do is basically process one input file at a time. We do
5461 everything we need to do with an input file once--copy over the
5462 section contents, handle the relocation information, and write
5463 out the symbols--and then we throw away the information we read
5464 from it. This approach requires a lot of lseeks of the output
5465 file, which is unfortunate but still faster than reopening a lot
5466 of files.
5467
5468 We use the output_has_begun field of the input BFDs to see
5469 whether we have already handled it. */
5470 for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
5471 sub->output_has_begun = FALSE;
252b5132 5472
116c20d2
NC		 5473 /* Mark all sections which are to be included in the link. This
5474 will normally be every section. We need to do this so that we
5475 can identify any sections which the linker has decided to not
5476 include. */
5477 for (o = abfd->sections; o != NULL; o = o->next)
252b5132 5478 {
8423293d 5479 for (p = o->map_head.link_order; p != NULL; p = p->next)
116c20d2
NC		 5480 if (p->type == bfd_indirect_link_order)
5481 p->u.indirect.section->linker_mark = TRUE;
252b5132
RH		 5482 }
5483
116c20d2
NC		 5484 have_link_order_relocs = FALSE;
5485 for (o = abfd->sections; o != NULL; o = o->next)
252b5132 5486 {
8423293d 5487 for (p = o->map_head.link_order;
116c20d2
NC		 5488 p != NULL;
5489 p = p->next)
252b5132 5490 {
116c20d2
NC		 5491 if (p->type == bfd_indirect_link_order
5492 && (bfd_get_flavour (p->u.indirect.section->owner)
5493 == bfd_target_aout_flavour))
252b5132 5494 {
116c20d2
NC		 5495 bfd *input_bfd;
5496
5497 input_bfd = p->u.indirect.section->owner;
5498 if (! input_bfd->output_has_begun)
252b5132 5499 {
116c20d2
NC		 5500 if (! aout_link_input_bfd (&aout_info, input_bfd))
5501 goto error_return;
5502 input_bfd->output_has_begun = TRUE;
252b5132 5503 }
252b5132 5504 }
116c20d2
NC		 5505 else if (p->type == bfd_section_reloc_link_order
5506 || p->type == bfd_symbol_reloc_link_order)
5507 {
5508 /* These are handled below. */
5509 have_link_order_relocs = TRUE;
5510 }
5511 else
5512 {
5513 if (! _bfd_default_link_order (abfd, info, o, p))
5514 goto error_return;
5515 }
252b5132
RH		 5516 }
5517 }
252b5132 5518
116c20d2
NC		 5519 /* Write out any symbols that we have not already written out. */
5520 aout_link_hash_traverse (aout_hash_table (info),
5521 aout_link_write_other_symbol,
5522 (void *) &aout_info);
5523
5524 /* Now handle any relocs we were asked to create by the linker.
5525 These did not come from any input file. We must do these after
5526 we have written out all the symbols, so that we know the symbol
5527 indices to use. */
5528 if (have_link_order_relocs)
5529 {
5530 for (o = abfd->sections; o != NULL; o = o->next)
252b5132 5531 {
8423293d 5532 for (p = o->map_head.link_order;
116c20d2
NC		 5533 p != NULL;
5534 p = p->next)
5535 {
5536 if (p->type == bfd_section_reloc_link_order
5537 || p->type == bfd_symbol_reloc_link_order)
5538 {
5539 if (! aout_link_reloc_link_order (&aout_info, o, p))
5540 goto error_return;
5541 }
5542 }
252b5132 5543 }
116c20d2 5544 }
252b5132 5545
116c20d2
NC		 5546 if (aout_info.contents != NULL)
5547 {
5548 free (aout_info.contents);
5549 aout_info.contents = NULL;
5550 }
5551 if (aout_info.relocs != NULL)
5552 {
5553 free (aout_info.relocs);
5554 aout_info.relocs = NULL;
5555 }
5556 if (aout_info.symbol_map != NULL)
5557 {
5558 free (aout_info.symbol_map);
5559 aout_info.symbol_map = NULL;
5560 }
5561 if (aout_info.output_syms != NULL)
5562 {
5563 free (aout_info.output_syms);
5564 aout_info.output_syms = NULL;
5565 }
5566 if (includes_hash_initialized)
5567 {
5568 bfd_hash_table_free (&aout_info.includes.root);
5569 includes_hash_initialized = FALSE;
5570 }
252b5132 5571
116c20d2
NC		 5572 /* Finish up any dynamic linking we may be doing. */
5573 if (aout_backend_info (abfd)->finish_dynamic_link != NULL)
5574 {
5575 if (! (*aout_backend_info (abfd)->finish_dynamic_link) (abfd, info))
5576 goto error_return;
252b5132
RH		 5577 }
5578
116c20d2
NC		 5579 /* Update the header information. */
5580 abfd->symcount = obj_aout_external_sym_count (abfd);
5581 exec_hdr (abfd)->a_syms = abfd->symcount * EXTERNAL_NLIST_SIZE;
5582 obj_str_filepos (abfd) = obj_sym_filepos (abfd) + exec_hdr (abfd)->a_syms;
5583 obj_textsec (abfd)->reloc_count =
5584 exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd);
5585 obj_datasec (abfd)->reloc_count =
5586 exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd);
252b5132 5587
116c20d2 5588 /* Write out the string table, unless there are no symbols. */
f6e688f7
AM		 5589 if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0)
5590 goto error_return;
116c20d2
NC		 5591 if (abfd->symcount > 0)
5592 {
f6e688f7 5593 if (!emit_stringtab (abfd, aout_info.strtab))
116c20d2
NC		 5594 goto error_return;
5595 }
f6e688f7 5596 else
116c20d2 5597 {
f6e688f7 5598 bfd_byte b[BYTES_IN_WORD];
252b5132 5599
f6e688f7
AM		 5600 memset (b, 0, BYTES_IN_WORD);
5601 if (bfd_bwrite (b, (bfd_size_type) BYTES_IN_WORD, abfd) != BYTES_IN_WORD)
116c20d2
NC		 5602 goto error_return;
5603 }
252b5132 5604
b34976b6 5605 return TRUE;
116c20d2
NC		 5606
5607 error_return:
5608 if (aout_info.contents != NULL)
5609 free (aout_info.contents);
5610 if (aout_info.relocs != NULL)
5611 free (aout_info.relocs);
5612 if (aout_info.symbol_map != NULL)
5613 free (aout_info.symbol_map);
5614 if (aout_info.output_syms != NULL)
5615 free (aout_info.output_syms);
5616 if (includes_hash_initialized)
5617 bfd_hash_table_free (&aout_info.includes.root);
5618 return FALSE;
252b5132 5619}
GDB Binutils - Deliverables
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