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* ecoff.c (_bfd_ecoff_find_nearest_line): Don't restrict line
[binutils.git] / bfd / aoutx.h
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1f29e30b 1/* BFD semi-generic back-end for a.out binaries.
51fbf454 2 Copyright 1990, 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
88dfcd68 3 Written by Cygnus Support.
7ed4093a 4
88dfcd68 5This file is part of BFD, the Binary File Descriptor library.
7ed4093a 6
88dfcd68 7This program is free software; you can redistribute it and/or modify
7ed4093a 8it under the terms of the GNU General Public License as published by
88dfcd68
SC		 9the Free Software Foundation; either version 2 of the License, or
10(at your option) any later version.
7ed4093a 11
88dfcd68 12This program is distributed in the hope that it will be useful,
7ed4093a
SC		 13but WITHOUT ANY WARRANTY; without even the implied warranty of
14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15GNU General Public License for more details.
16
17You should have received a copy of the GNU General Public License
88dfcd68 18along with this program; if not, write to the Free Software
943fbd5b 19Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
7ed4093a 20
4e41b5aa
SC		 21/*
22SECTION
23 a.out backends
6f715d66 24
6f715d66 25
4e41b5aa 26DESCRIPTION
6f715d66 27
4e41b5aa
SC		 28 BFD supports a number of different flavours of a.out format,
29 though the major differences are only the sizes of the
30 structures on disk, and the shape of the relocation
c188b0be 31 information.
6f715d66 32
c188b0be 33 The support is split into a basic support file @file{aoutx.h}
4e41b5aa 34 and other files which derive functions from the base. One
c188b0be 35 derivation file is @file{aoutf1.h} (for a.out flavour 1), and
4e41b5aa
SC		 36 adds to the basic a.out functions support for sun3, sun4, 386
37 and 29k a.out files, to create a target jump vector for a
c188b0be 38 specific target.
6f715d66 39
4e41b5aa 40 This information is further split out into more specific files
c188b0be
DM		 41 for each machine, including @file{sunos.c} for sun3 and sun4,
42 @file{newsos3.c} for the Sony NEWS, and @file{demo64.c} for a
4e41b5aa
SC		 43 demonstration of a 64 bit a.out format.
44
c188b0be
DM		 45 The base file @file{aoutx.h} defines general mechanisms for
46 reading and writing records to and from disk and various
4e41b5aa 47 other methods which BFD requires. It is included by
c188b0be
DM		 48 @file{aout32.c} and @file{aout64.c} to form the names
49 <<aout_32_swap_exec_header_in>>, <<aout_64_swap_exec_header_in>>, etc.
4e41b5aa
SC		 50
51 As an example, this is what goes on to make the back end for a
c188b0be 52 sun4, from @file{aout32.c}:
4e41b5aa 53
3f7607af
PB		 54| #define ARCH_SIZE 32
55| #include "aoutx.h"
4e41b5aa
SC		 56
57 Which exports names:
58
3f7607af
PB		 59| ...
60| aout_32_canonicalize_reloc
61| aout_32_find_nearest_line
62| aout_32_get_lineno
63| aout_32_get_reloc_upper_bound
64| ...
6f715d66 65
c188b0be 66 from @file{sunos.c}:
4e41b5aa 67
3f7607af
PB		 68| #define TARGET_NAME "a.out-sunos-big"
69| #define VECNAME sunos_big_vec
70| #include "aoutf1.h"
4e41b5aa 71
c188b0be 72 requires all the names from @file{aout32.c}, and produces the jump vector
6f715d66 73
3f7607af 74| sunos_big_vec
c6705697 75
c188b0be 76 The file @file{host-aout.c} is a special case. It is for a large set
4e41b5aa
SC		 77 of hosts that use ``more or less standard'' a.out files, and
78 for which cross-debugging is not interesting. It uses the
79 standard 32-bit a.out support routines, but determines the
80 file offsets and addresses of the text, data, and BSS
81 sections, the machine architecture and machine type, and the
82 entry point address, in a host-dependent manner. Once these
83 values have been determined, generic code is used to handle
c188b0be 84 the object file.
c6705697 85
4e41b5aa
SC		 86 When porting it to run on a new system, you must supply:
87
3f7607af
PB		 88| HOST_PAGE_SIZE
89| HOST_SEGMENT_SIZE
90| HOST_MACHINE_ARCH (optional)
91| HOST_MACHINE_MACHINE (optional)
92| HOST_TEXT_START_ADDR
93| HOST_STACK_END_ADDR
c6705697 94
4c3721d5
ILT		 95 in the file @file{../include/sys/h-@var{XXX}.h} (for your host). These
96 values, plus the structures and macros defined in @file{a.out.h} on
4e41b5aa
SC		 97 your host system, will produce a BFD target that will access
98 ordinary a.out files on your host. To configure a new machine
4c3721d5 99 to use @file{host-aout.c}, specify:
c6705697 100
3f7607af
PB		 101| TDEFAULTS = -DDEFAULT_VECTOR=host_aout_big_vec
102| TDEPFILES= host-aout.o trad-core.o
c6705697 103
4c3721d5
ILT		 104 in the @file{config/@var{XXX}.mt} file, and modify @file{configure.in}
105 to use the
106 @file{@var{XXX}.mt} file (by setting "<<bfd_target=XXX>>") when your
4e41b5aa 107 configuration is selected.
c6705697 108
6f715d66
SC		 109*/
110
ce07dd7c
KR		 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
ae115e51 120#define KEEPIT udata.i
67c060c3 121
a99c3d70 122#include <string.h> /* For strchr and friends */
14dc2f77 123#include <ctype.h>
67c060c3 124#include "bfd.h"
7ed4093a 125#include <sysdep.h>
4c3721d5 126#include "bfdlink.h"
7ed4093a 127
6f715d66 128#include "libaout.h"
7ed4093a 129#include "libbfd.h"
c3eb25fc
SC		 130#include "aout/aout64.h"
131#include "aout/stab_gnu.h"
132#include "aout/ar.h"
7ed4093a 133
5c8444f8 134static boolean aout_get_external_symbols PARAMS ((bfd *));
4298e311
ILT		 135static boolean translate_from_native_sym_flags
136 PARAMS ((bfd *, aout_symbol_type *));
137static boolean translate_to_native_sym_flags
138 PARAMS ((bfd *, asymbol *, struct external_nlist *));
0ee75d02 139
4e41b5aa
SC		 140/*
141SUBSECTION
4c3721d5 142 Relocations
4e41b5aa
SC		 143
144DESCRIPTION
c188b0be 145 The file @file{aoutx.h} provides for both the @emph{standard}
4e41b5aa
SC		 146 and @emph{extended} forms of a.out relocation records.
147
c188b0be
DM		 148 The standard records contain only an
149 address, a symbol index, and a type field. The extended records
4e41b5aa 150 (used on 29ks and sparcs) also have a full integer for an
c188b0be 151 addend.
7ed4093a 152
6f715d66 153*/
f42fe159 154#ifndef CTOR_TABLE_RELOC_HOWTO
7ed4093a 155#define CTOR_TABLE_RELOC_IDX 2
f42fe159
ILT		 156#define CTOR_TABLE_RELOC_HOWTO(BFD) ((obj_reloc_entry_size(BFD) == RELOC_EXT_SIZE \
157 ? howto_table_ext : howto_table_std) \
158 + CTOR_TABLE_RELOC_IDX)
159#endif
160
161#ifndef MY_swap_std_reloc_in
162#define MY_swap_std_reloc_in NAME(aout,swap_std_reloc_in)
163#endif
164
165#ifndef MY_swap_std_reloc_out
166#define MY_swap_std_reloc_out NAME(aout,swap_std_reloc_out)
167#endif
67c060c3 168
34e9ffbc
NH		 169#ifndef MY_final_link_relocate
170#define MY_final_link_relocate _bfd_final_link_relocate
171#endif
172
173#ifndef MY_relocate_contents
174#define MY_relocate_contents _bfd_relocate_contents
175#endif
176
ce07dd7c
KR		 177#define howto_table_ext NAME(aout,ext_howto_table)
178#define howto_table_std NAME(aout,std_howto_table)
67c060c3 179
c188b0be 180reloc_howto_type howto_table_ext[] =
7ed4093a 181{
4c3721d5 182 /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone */
2e235c93
ILT		 183 HOWTO(RELOC_8, 0, 0, 8, false, 0, complain_overflow_bitfield,0,"8", false, 0,0x000000ff, false),
184 HOWTO(RELOC_16, 0, 1, 16, false, 0, complain_overflow_bitfield,0,"16", false, 0,0x0000ffff, false),
185 HOWTO(RELOC_32, 0, 2, 32, false, 0, complain_overflow_bitfield,0,"32", false, 0,0xffffffff, false),
186 HOWTO(RELOC_DISP8, 0, 0, 8, true, 0, complain_overflow_signed,0,"DISP8", false, 0,0x000000ff, false),
187 HOWTO(RELOC_DISP16, 0, 1, 16, true, 0, complain_overflow_signed,0,"DISP16", false, 0,0x0000ffff, false),
188 HOWTO(RELOC_DISP32, 0, 2, 32, true, 0, complain_overflow_signed,0,"DISP32", false, 0,0xffffffff, false),
189 HOWTO(RELOC_WDISP30,2, 2, 30, true, 0, complain_overflow_signed,0,"WDISP30", false, 0,0x3fffffff, false),
190 HOWTO(RELOC_WDISP22,2, 2, 22, true, 0, complain_overflow_signed,0,"WDISP22", false, 0,0x003fffff, false),
191 HOWTO(RELOC_HI22, 10, 2, 22, false, 0, complain_overflow_bitfield,0,"HI22", false, 0,0x003fffff, false),
192 HOWTO(RELOC_22, 0, 2, 22, false, 0, complain_overflow_bitfield,0,"22", false, 0,0x003fffff, false),
193 HOWTO(RELOC_13, 0, 2, 13, false, 0, complain_overflow_bitfield,0,"13", false, 0,0x00001fff, false),
194 HOWTO(RELOC_LO10, 0, 2, 10, false, 0, complain_overflow_dont,0,"LO10", false, 0,0x000003ff, false),
195 HOWTO(RELOC_SFA_BASE,0, 2, 32, false, 0, complain_overflow_bitfield,0,"SFA_BASE", false, 0,0xffffffff, false),
196 HOWTO(RELOC_SFA_OFF13,0,2, 32, false, 0, complain_overflow_bitfield,0,"SFA_OFF13",false, 0,0xffffffff, false),
197 HOWTO(RELOC_BASE10, 0, 2, 16, false, 0, complain_overflow_bitfield,0,"BASE10", false, 0,0x0000ffff, false),
198 HOWTO(RELOC_BASE13, 0, 2, 13, false, 0, complain_overflow_bitfield,0,"BASE13", false, 0,0x00001fff, false),
199 HOWTO(RELOC_BASE22, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"BASE22", false, 0,0x00000000, false),
ae115e51
ILT		 200 HOWTO(RELOC_PC10, 0, 2, 10, true, 0, complain_overflow_dont,0,"PC10", false, 0,0x000003ff, true),
201 HOWTO(RELOC_PC22, 10, 2, 22, true, 0, complain_overflow_signed,0,"PC22", false, 0,0x003fffff, true),
202 HOWTO(RELOC_JMP_TBL,2, 2, 30, true, 0, complain_overflow_signed,0,"JMP_TBL", false, 0,0x3fffffff, false),
2e235c93
ILT		 203 HOWTO(RELOC_SEGOFF16,0, 2, 0, false, 0, complain_overflow_bitfield,0,"SEGOFF16", false, 0,0x00000000, false),
204 HOWTO(RELOC_GLOB_DAT,0, 2, 0, false, 0, complain_overflow_bitfield,0,"GLOB_DAT", false, 0,0x00000000, false),
205 HOWTO(RELOC_JMP_SLOT,0, 2, 0, false, 0, complain_overflow_bitfield,0,"JMP_SLOT", false, 0,0x00000000, false),
206 HOWTO(RELOC_RELATIVE,0, 2, 0, false, 0, complain_overflow_bitfield,0,"RELATIVE", false, 0,0x00000000, false),
7ed4093a
SC		 207};
208
209/* Convert standard reloc records to "arelent" format (incl byte swap). */
210
ce07dd7c 211reloc_howto_type howto_table_std[] = {
4c3721d5 212 /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone */
c188b0be 213HOWTO( 0, 0, 0, 8, false, 0, complain_overflow_bitfield,0,"8", true, 0x000000ff,0x000000ff, false),
2e235c93
ILT		 214HOWTO( 1, 0, 1, 16, false, 0, complain_overflow_bitfield,0,"16", true, 0x0000ffff,0x0000ffff, false),
215HOWTO( 2, 0, 2, 32, false, 0, complain_overflow_bitfield,0,"32", true, 0xffffffff,0xffffffff, false),
c188b0be
DM		 216HOWTO( 3, 0, 4, 64, false, 0, complain_overflow_bitfield,0,"64", true, 0xdeaddead,0xdeaddead, false),
217HOWTO( 4, 0, 0, 8, true, 0, complain_overflow_signed, 0,"DISP8", true, 0x000000ff,0x000000ff, false),
218HOWTO( 5, 0, 1, 16, true, 0, complain_overflow_signed, 0,"DISP16", true, 0x0000ffff,0x0000ffff, false),
219HOWTO( 6, 0, 2, 32, true, 0, complain_overflow_signed, 0,"DISP32", true, 0xffffffff,0xffffffff, false),
220HOWTO( 7, 0, 4, 64, true, 0, complain_overflow_signed, 0,"DISP64", true, 0xfeedface,0xfeedface, false),
4852416e 221HOWTO( 8, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"GOT_REL", false, 0,0x00000000, false),
c188b0be
DM		 222HOWTO( 9, 0, 1, 16, false, 0, complain_overflow_bitfield,0,"BASE16", false,0xffffffff,0xffffffff, false),
223HOWTO(10, 0, 2, 32, false, 0, complain_overflow_bitfield,0,"BASE32", false,0xffffffff,0xffffffff, false),
cb9461ff
JK		 224{ -1 },
225{ -1 },
226{ -1 },
227{ -1 },
228{ -1 },
229 HOWTO(16, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"JMP_TABLE", false, 0,0x00000000, false),
230{ -1 },
231{ -1 },
232{ -1 },
233{ -1 },
234{ -1 },
235{ -1 },
236{ -1 },
237{ -1 }, { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, { -1 },
238 HOWTO(32, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"RELATIVE", false, 0,0x00000000, false),
239{ -1 },
240{ -1 },
241{ -1 },
242{ -1 },
243{ -1 },
244{ -1 },
245{ -1 },
246 HOWTO(40, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"BASEREL", false, 0,0x00000000, false),
7ed4093a
SC		 247};
248
c188b0be
DM		 249#define TABLE_SIZE(TABLE) (sizeof(TABLE)/sizeof(TABLE[0]))
250
51fbf454 251reloc_howto_type *
8eb5d4be
JK		 252NAME(aout,reloc_type_lookup) (abfd,code)
253 bfd *abfd;
254 bfd_reloc_code_real_type code;
214f8f23
KR		 255{
256#define EXT(i,j) case i: return &howto_table_ext[j]
257#define STD(i,j) case i: return &howto_table_std[j]
258 int ext = obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE;
259 if (code == BFD_RELOC_CTOR)
260 switch (bfd_get_arch_info (abfd)->bits_per_address)
261 {
262 case 32:
263 code = BFD_RELOC_32;
264 break;
ec099b4b
ILT		 265 case 64:
266 code = BFD_RELOC_64;
267 break;
214f8f23
KR		 268 }
269 if (ext)
270 switch (code)
271 {
272 EXT (BFD_RELOC_32, 2);
273 EXT (BFD_RELOC_HI22, 8);
274 EXT (BFD_RELOC_LO10, 11);
275 EXT (BFD_RELOC_32_PCREL_S2, 6);
c188b0be 276 EXT (BFD_RELOC_SPARC_WDISP22, 7);
ec099b4b 277 EXT (BFD_RELOC_SPARC13, 10);
ae115e51 278 EXT (BFD_RELOC_SPARC_GOT10, 14);
ec099b4b 279 EXT (BFD_RELOC_SPARC_BASE13, 15);
ae115e51
ILT		 280 EXT (BFD_RELOC_SPARC_GOT13, 15);
281 EXT (BFD_RELOC_SPARC_GOT22, 16);
282 EXT (BFD_RELOC_SPARC_PC10, 17);
283 EXT (BFD_RELOC_SPARC_PC22, 18);
284 EXT (BFD_RELOC_SPARC_WPLT30, 19);
51fbf454 285 default: return (reloc_howto_type *) NULL;
214f8f23
KR		 286 }
287 else
288 /* std relocs */
289 switch (code)
290 {
291 STD (BFD_RELOC_16, 1);
292 STD (BFD_RELOC_32, 2);
293 STD (BFD_RELOC_8_PCREL, 4);
294 STD (BFD_RELOC_16_PCREL, 5);
295 STD (BFD_RELOC_32_PCREL, 6);
c188b0be
DM		 296 STD (BFD_RELOC_16_BASEREL, 9);
297 STD (BFD_RELOC_32_BASEREL, 10);
51fbf454 298 default: return (reloc_howto_type *) NULL;
214f8f23 299 }
214f8f23 300}
7ed4093a 301
4e41b5aa
SC		 302/*
303SUBSECTION
4c3721d5 304 Internal entry points
4e41b5aa
SC		 305
306DESCRIPTION
c188b0be 307 @file{aoutx.h} exports several routines for accessing the
4e41b5aa
SC		 308 contents of an a.out file, which are gathered and exported in
309 turn by various format specific files (eg sunos.c).
310
6f715d66
SC		 311*/
312
4e41b5aa
SC		 313/*
314FUNCTION
c188b0be 315 aout_@var{size}_swap_exec_header_in
4e41b5aa 316
fa2b89f1 317SYNOPSIS
c188b0be 318 void aout_@var{size}_swap_exec_header_in,
4e41b5aa
SC		 319 (bfd *abfd,
320 struct external_exec *raw_bytes,
321 struct internal_exec *execp);
c188b0be
DM		 322
323DESCRIPTION
324 Swap the information in an executable header @var{raw_bytes} taken
325 from a raw byte stream memory image into the internal exec header
326 structure @var{execp}.
6f715d66 327*/
c188b0be 328
34dd8ba3 329#ifndef NAME_swap_exec_header_in
7ed4093a 330void
8eb5d4be
JK		 331NAME(aout,swap_exec_header_in) (abfd, raw_bytes, execp)
332 bfd *abfd;
333 struct external_exec *raw_bytes;
334 struct internal_exec *execp;
7ed4093a
SC		 335{
336 struct external_exec *bytes = (struct external_exec *)raw_bytes;
337
55c0061e
FF		 338 /* The internal_exec structure has some fields that are unused in this
339 configuration (IE for i960), so ensure that all such uninitialized
340 fields are zero'd out. There are places where two of these structs
341 are memcmp'd, and thus the contents do matter. */
68241b2b 342 memset ((PTR) execp, 0, sizeof (struct internal_exec));
7ed4093a
SC		 343 /* Now fill in fields in the execp, from the bytes in the raw data. */
344 execp->a_info = bfd_h_get_32 (abfd, bytes->e_info);
345 execp->a_text = GET_WORD (abfd, bytes->e_text);
346 execp->a_data = GET_WORD (abfd, bytes->e_data);
347 execp->a_bss = GET_WORD (abfd, bytes->e_bss);
348 execp->a_syms = GET_WORD (abfd, bytes->e_syms);
349 execp->a_entry = GET_WORD (abfd, bytes->e_entry);
350 execp->a_trsize = GET_WORD (abfd, bytes->e_trsize);
351 execp->a_drsize = GET_WORD (abfd, bytes->e_drsize);
352}
34dd8ba3
JG		 353#define NAME_swap_exec_header_in NAME(aout,swap_exec_header_in)
354#endif
7ed4093a 355
4e41b5aa
SC		 356/*
357FUNCTION
c188b0be 358 aout_@var{size}_swap_exec_header_out
4e41b5aa 359
fa2b89f1 360SYNOPSIS
c188b0be 361 void aout_@var{size}_swap_exec_header_out
6f715d66
SC		 362 (bfd *abfd,
363 struct internal_exec *execp,
4e41b5aa 364 struct external_exec *raw_bytes);
c188b0be
DM		 365
366DESCRIPTION
367 Swap the information in an internal exec header structure
368 @var{execp} into the buffer @var{raw_bytes} ready for writing to disk.
6f715d66 369*/
7ed4093a 370void
8eb5d4be
JK		 371NAME(aout,swap_exec_header_out) (abfd, execp, raw_bytes)
372 bfd *abfd;
373 struct internal_exec *execp;
374 struct external_exec *raw_bytes;
7ed4093a
SC		 375{
376 struct external_exec *bytes = (struct external_exec *)raw_bytes;
377
378 /* Now fill in fields in the raw data, from the fields in the exec struct. */
379 bfd_h_put_32 (abfd, execp->a_info , bytes->e_info);
380 PUT_WORD (abfd, execp->a_text , bytes->e_text);
381 PUT_WORD (abfd, execp->a_data , bytes->e_data);
382 PUT_WORD (abfd, execp->a_bss , bytes->e_bss);
383 PUT_WORD (abfd, execp->a_syms , bytes->e_syms);
384 PUT_WORD (abfd, execp->a_entry , bytes->e_entry);
385 PUT_WORD (abfd, execp->a_trsize, bytes->e_trsize);
386 PUT_WORD (abfd, execp->a_drsize, bytes->e_drsize);
387}
388
ec6b18c4 389/* Make all the section for an a.out file. */
7ed4093a 390
ec6b18c4
ILT		 391boolean
392NAME(aout,make_sections) (abfd)
393 bfd *abfd;
394{
395 if (obj_textsec (abfd) == (asection *) NULL
396 && bfd_make_section (abfd, ".text") == (asection *) NULL)
397 return false;
398 if (obj_datasec (abfd) == (asection *) NULL
399 && bfd_make_section (abfd, ".data") == (asection *) NULL)
400 return false;
401 if (obj_bsssec (abfd) == (asection *) NULL
402 && bfd_make_section (abfd, ".bss") == (asection *) NULL)
403 return false;
404 return true;
405}
6f715d66 406
4e41b5aa
SC		 407/*
408FUNCTION
c188b0be 409 aout_@var{size}_some_aout_object_p
6f715d66 410
fa2b89f1 411SYNOPSIS
2f3508ad 412 const bfd_target *aout_@var{size}_some_aout_object_p
6f715d66 413 (bfd *abfd,
2f3508ad 414 const bfd_target *(*callback_to_real_object_p)());
c188b0be
DM		 415
416DESCRIPTION
417 Some a.out variant thinks that the file open in @var{abfd}
418 checking is an a.out file. Do some more checking, and set up
419 for access if it really is. Call back to the calling
420 environment's "finish up" function just before returning, to
421 handle any last-minute setup.
6f715d66 422*/
c188b0be 423
2f3508ad 424const bfd_target *
8eb5d4be
JK		 425NAME(aout,some_aout_object_p) (abfd, execp, callback_to_real_object_p)
426 bfd *abfd;
427 struct internal_exec *execp;
2f3508ad 428 const bfd_target *(*callback_to_real_object_p) PARAMS ((bfd *));
7ed4093a 429{
214f8f23 430 struct aout_data_struct *rawptr, *oldrawptr;
2f3508ad 431 const bfd_target *result;
7ed4093a 432
6db82ea7 433 rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, sizeof (struct aout_data_struct ));
a9713b91 434 if (rawptr == NULL)
7ed4093a 435 return 0;
7ed4093a 436
214f8f23 437 oldrawptr = abfd->tdata.aout_data;
6db82ea7 438 abfd->tdata.aout_data = rawptr;
ebd24135
ILT		 439
440 /* Copy the contents of the old tdata struct.
441 In particular, we want the subformat, since for hpux it was set in
442 hp300hpux.c:swap_exec_header_in and will be used in
443 hp300hpux.c:callback. */
444 if (oldrawptr != NULL)
445 *abfd->tdata.aout_data = *oldrawptr;
446
6db82ea7
SC		 447 abfd->tdata.aout_data->a.hdr = &rawptr->e;
448 *(abfd->tdata.aout_data->a.hdr) = *execp; /* Copy in the internal_exec struct */
449 execp = abfd->tdata.aout_data->a.hdr;
7ed4093a
SC		 450
451 /* Set the file flags */
452 abfd->flags = NO_FLAGS;
453 if (execp->a_drsize || execp->a_trsize)
454 abfd->flags |= HAS_RELOC;
e6e265ce 455 /* Setting of EXEC_P has been deferred to the bottom of this function */
c188b0be 456 if (execp->a_syms)
7ed4093a 457 abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS;
e68de5d5
ILT		 458 if (N_DYNAMIC(*execp))
459 abfd->flags |= DYNAMIC;
7ed4093a 460
ce07dd7c
KR		 461 if (N_MAGIC (*execp) == ZMAGIC)
462 {
f5419a59
ILT		 463 abfd->flags |= D_PAGED | WP_TEXT;
464 adata (abfd).magic = z_magic;
465 }
466 else if (N_MAGIC (*execp) == QMAGIC)
467 {
468 abfd->flags |= D_PAGED | WP_TEXT;
469 adata (abfd).magic = z_magic;
470 adata (abfd).subformat = q_magic_format;
ce07dd7c
KR		 471 }
472 else if (N_MAGIC (*execp) == NMAGIC)
473 {
474 abfd->flags |= WP_TEXT;
f5419a59 475 adata (abfd).magic = n_magic;
ce07dd7c 476 }
7b024321
ILT		 477 else if (N_MAGIC (*execp) == OMAGIC
478 || N_MAGIC (*execp) == BMAGIC)
f5419a59 479 adata (abfd).magic = o_magic;
ce07dd7c 480 else
f5419a59
ILT		 481 {
482 /* Should have been checked with N_BADMAG before this routine
483 was called. */
484 abort ();
485 }
7ed4093a
SC		 486
487 bfd_get_start_address (abfd) = execp->a_entry;
488
489 obj_aout_symbols (abfd) = (aout_symbol_type *)NULL;
490 bfd_get_symcount (abfd) = execp->a_syms / sizeof (struct external_nlist);
491
7ed4093a
SC		 492 /* The default relocation entry size is that of traditional V7 Unix. */
493 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
494
7b02b4ed
JG		 495 /* The default symbol entry size is that of traditional Unix. */
496 obj_symbol_entry_size (abfd) = EXTERNAL_NLIST_SIZE;
497
7ac84736 498#ifdef USE_MMAP
4fe6d901 499 bfd_init_window (&obj_aout_sym_window (abfd));
4fe6d901 500 bfd_init_window (&obj_aout_string_window (abfd));
7ac84736
KR		 501#endif
502 obj_aout_external_syms (abfd) = NULL;
503 obj_aout_external_strings (abfd) = NULL;
728472f1
ILT		 504 obj_aout_sym_hashes (abfd) = NULL;
505
ec6b18c4
ILT		 506 if (! NAME(aout,make_sections) (abfd))
507 return NULL;
7ed4093a 508
6db82ea7
SC		 509 obj_datasec (abfd)->_raw_size = execp->a_data;
510 obj_bsssec (abfd)->_raw_size = execp->a_bss;
7ed4093a 511
0ee75d02 512 obj_textsec (abfd)->flags =
11676adc 513 (execp->a_trsize != 0
0ee75d02
ILT		 514 ? (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_RELOC)
515 : (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS));
516 obj_datasec (abfd)->flags =
11676adc 517 (execp->a_drsize != 0
0ee75d02
ILT		 518 ? (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS | SEC_RELOC)
519 : (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS));
7ed4093a
SC		 520 obj_bsssec (abfd)->flags = SEC_ALLOC;
521
522#ifdef THIS_IS_ONLY_DOCUMENTATION
98d43107
JG		 523 /* The common code can't fill in these things because they depend
524 on either the start address of the text segment, the rounding
9783e04a 525 up of virtual addresses between segments, or the starting file
98d43107
JG		 526 position of the text segment -- all of which varies among different
527 versions of a.out. */
528
c188b0be 529 /* Call back to the format-dependent code to fill in the rest of the
7ed4093a
SC		 530 fields and do any further cleanup. Things that should be filled
531 in by the callback: */
532
533 struct exec *execp = exec_hdr (abfd);
534
98d43107 535 obj_textsec (abfd)->size = N_TXTSIZE(*execp);
6db82ea7 536 obj_textsec (abfd)->raw_size = N_TXTSIZE(*execp);
98d43107
JG		 537 /* data and bss are already filled in since they're so standard */
538
7ed4093a 539 /* The virtual memory addresses of the sections */
7ed4093a 540 obj_textsec (abfd)->vma = N_TXTADDR(*execp);
98d43107
JG		 541 obj_datasec (abfd)->vma = N_DATADDR(*execp);
542 obj_bsssec (abfd)->vma = N_BSSADDR(*execp);
7ed4093a
SC		 543
544 /* The file offsets of the sections */
545 obj_textsec (abfd)->filepos = N_TXTOFF(*execp);
546 obj_datasec (abfd)->filepos = N_DATOFF(*execp);
547
548 /* The file offsets of the relocation info */
549 obj_textsec (abfd)->rel_filepos = N_TRELOFF(*execp);
550 obj_datasec (abfd)->rel_filepos = N_DRELOFF(*execp);
551
552 /* The file offsets of the string table and symbol table. */
553 obj_str_filepos (abfd) = N_STROFF (*execp);
554 obj_sym_filepos (abfd) = N_SYMOFF (*execp);
555
7ed4093a
SC		 556 /* Determine the architecture and machine type of the object file. */
557 switch (N_MACHTYPE (*exec_hdr (abfd))) {
558 default:
559 abfd->obj_arch = bfd_arch_obscure;
560 break;
561 }
562
34e9ffbc 563 adata(abfd)->page_size = TARGET_PAGE_SIZE;
7b02b4ed
JG		 564 adata(abfd)->segment_size = SEGMENT_SIZE;
565 adata(abfd)->exec_bytes_size = EXEC_BYTES_SIZE;
566
7ed4093a
SC		 567 return abfd->xvec;
568
569 /* The architecture is encoded in various ways in various a.out variants,
570 or is not encoded at all in some of them. The relocation size depends
571 on the architecture and the a.out variant. Finally, the return value
572 is the bfd_target vector in use. If an error occurs, return zero and
573 set bfd_error to the appropriate error code.
c188b0be 574
7ed4093a
SC		 575 Formats such as b.out, which have additional fields in the a.out
576 header, should cope with them in this callback as well. */
577#endif /* DOCUMENTATION */
578
e6e265ce
JG		 579 result = (*callback_to_real_object_p)(abfd);
580
581 /* Now that the segment addresses have been worked out, take a better
582 guess at whether the file is executable. If the entry point
583 is within the text segment, assume it is. (This makes files
584 executable even if their entry point address is 0, as long as
6c97aedf 585 their text starts at zero.). */
e6e265ce 586 if ((execp->a_entry >= obj_textsec(abfd)->vma) &&
6db82ea7 587 (execp->a_entry < obj_textsec(abfd)->vma + obj_textsec(abfd)->_raw_size))
e6e265ce 588 abfd->flags |= EXEC_P;
6c97aedf
ILT		 589#ifdef STAT_FOR_EXEC
590 else
591 {
592 struct stat stat_buf;
593
594 /* The original heuristic doesn't work in some important cases.
595 The a.out file has no information about the text start
596 address. For files (like kernels) linked to non-standard
597 addresses (ld -Ttext nnn) the entry point may not be between
598 the default text start (obj_textsec(abfd)->vma) and
599 (obj_textsec(abfd)->vma) + text size. This is not just a mach
600 issue. Many kernels are loaded at non standard addresses. */
601 if (abfd->iostream
602 && (fstat(fileno((FILE *) (abfd->iostream)), &stat_buf) == 0)
603 && ((stat_buf.st_mode & 0111) != 0))
604 abfd->flags |= EXEC_P;
605 }
606#endif /* STAT_FOR_EXEC */
607
214f8f23
KR		 608 if (result)
609 {
1f29e30b 610#if 0 /* These should be set correctly anyways. */
214f8f23
KR		 611 abfd->sections = obj_textsec (abfd);
612 obj_textsec (abfd)->next = obj_datasec (abfd);
613 obj_datasec (abfd)->next = obj_bsssec (abfd);
1f29e30b 614#endif
214f8f23
KR		 615 }
616 else
617 {
618 free (rawptr);
619 abfd->tdata.aout_data = oldrawptr;
620 }
e6e265ce 621 return result;
7ed4093a
SC		 622}
623
4e41b5aa
SC		 624/*
625FUNCTION
c188b0be 626 aout_@var{size}_mkobject
6f715d66 627
fa2b89f1 628SYNOPSIS
c188b0be
DM		 629 boolean aout_@var{size}_mkobject, (bfd *abfd);
630
631DESCRIPTION
632 Initialize BFD @var{abfd} for use with a.out files.
6f715d66 633*/
7ed4093a
SC		 634
635boolean
8eb5d4be
JK		 636NAME(aout,mkobject) (abfd)
637 bfd *abfd;
7ed4093a 638{
6db82ea7 639 struct aout_data_struct *rawptr;
7ed4093a 640
68241b2b 641 bfd_set_error (bfd_error_system_call);
7ed4093a
SC		 642
643 /* Use an intermediate variable for clarity */
2e235c93 644 rawptr = (struct aout_data_struct *)bfd_zalloc (abfd, sizeof (struct aout_data_struct ));
c188b0be 645
a9713b91 646 if (rawptr == NULL)
7ed4093a 647 return false;
c188b0be 648
6db82ea7 649 abfd->tdata.aout_data = rawptr;
7ed4093a 650 exec_hdr (abfd) = &(rawptr->e);
c188b0be 651
7ed4093a
SC		 652 obj_textsec (abfd) = (asection *)NULL;
653 obj_datasec (abfd) = (asection *)NULL;
654 obj_bsssec (abfd) = (asection *)NULL;
c188b0be 655
7ed4093a
SC		 656 return true;
657}
658
6f715d66 659
4e41b5aa
SC		 660/*
661FUNCTION
c188b0be
DM		 662 aout_@var{size}_machine_type
663
664SYNOPSIS
665 enum machine_type aout_@var{size}_machine_type
666 (enum bfd_architecture arch,
667 unsigned long machine));
6f715d66 668
4e41b5aa
SC		 669DESCRIPTION
670 Keep track of machine architecture and machine type for
c188b0be
DM		 671 a.out's. Return the <<machine_type>> for a particular
672 architecture and machine, or <<M_UNKNOWN>> if that exact architecture
673 and machine can't be represented in a.out format.
7ed4093a 674
4e41b5aa 675 If the architecture is understood, machine type 0 (default)
c188b0be 676 is always understood.
6f715d66 677*/
7ed4093a
SC		 678
679enum machine_type
9ae74960 680NAME(aout,machine_type) (arch, machine, unknown)
8eb5d4be
JK		 681 enum bfd_architecture arch;
682 unsigned long machine;
9ae74960 683 boolean *unknown;
7ed4093a
SC		 684{
685 enum machine_type arch_flags;
c188b0be 686
7ed4093a 687 arch_flags = M_UNKNOWN;
9ae74960 688 *unknown = true;
c188b0be 689
7ed4093a
SC		 690 switch (arch) {
691 case bfd_arch_sparc:
ae115e51
ILT		 692 if (machine == 0
693 || machine == bfd_mach_sparc
694 || machine == bfd_mach_sparc64)
695 arch_flags = M_SPARC;
7ed4093a 696 break;
c188b0be 697
7ed4093a
SC		 698 case bfd_arch_m68k:
699 switch (machine) {
700 case 0: arch_flags = M_68010; break;
9ae74960 701 case 68000: arch_flags = M_UNKNOWN; *unknown = false; break;
7ed4093a
SC		 702 case 68010: arch_flags = M_68010; break;
703 case 68020: arch_flags = M_68020; break;
704 default: arch_flags = M_UNKNOWN; break;
705 }
706 break;
c188b0be 707
7ed4093a
SC		 708 case bfd_arch_i386:
709 if (machine == 0) arch_flags = M_386;
710 break;
c188b0be 711
7ed4093a
SC		 712 case bfd_arch_a29k:
713 if (machine == 0) arch_flags = M_29K;
714 break;
c188b0be 715
204ba9e3
ILT		 716 case bfd_arch_arm:
717 if (machine == 0) arch_flags = M_ARM;
718 break;
719
5cd3dcff
KR		 720 case bfd_arch_mips:
721 switch (machine) {
722 case 0:
723 case 2000:
724 case 3000: arch_flags = M_MIPS1; break;
943fbd5b 725 case 4000: /* mips3 */
5cd3dcff 726 case 4400:
943fbd5b
KR		 727 case 8000: /* mips4 */
728 /* real mips2: */
5cd3dcff
KR		 729 case 6000: arch_flags = M_MIPS2; break;
730 default: arch_flags = M_UNKNOWN; break;
731 }
732 break;
733
f42fe159
ILT		 734 case bfd_arch_ns32k:
735 switch (machine) {
736 case 0: arch_flags = M_NS32532; break;
737 case 32032: arch_flags = M_NS32032; break;
738 case 32532: arch_flags = M_NS32532; break;
739 default: arch_flags = M_UNKNOWN; break;
740 }
741 break;
742
82b1edf7
KR		 743 case bfd_arch_vax:
744 *unknown = false;
745 break;
746
747 /* start-sanitize-rce */
748 case bfd_arch_rce:
749 arch_flags = M_RCE;
750 break;
751 /* end-sanitize-rce */
752
7ed4093a
SC		 753 default:
754 arch_flags = M_UNKNOWN;
7ed4093a 755 }
9ae74960
ILT		 756
757 if (arch_flags != M_UNKNOWN)
758 *unknown = false;
759
7ed4093a
SC		 760 return arch_flags;
761}
762
9e2dad8e 763
4e41b5aa
SC		 764/*
765FUNCTION
c188b0be 766 aout_@var{size}_set_arch_mach
6f715d66 767
fa2b89f1 768SYNOPSIS
c188b0be 769 boolean aout_@var{size}_set_arch_mach,
6f715d66 770 (bfd *,
c188b0be 771 enum bfd_architecture arch,
6f715d66 772 unsigned long machine));
c188b0be
DM		 773
774DESCRIPTION
775 Set the architecture and the machine of the BFD @var{abfd} to the
776 values @var{arch} and @var{machine}. Verify that @var{abfd}'s format
777 can support the architecture required.
6f715d66
SC		 778*/
779
7ed4093a 780boolean
8eb5d4be
JK		 781NAME(aout,set_arch_mach) (abfd, arch, machine)
782 bfd *abfd;
783 enum bfd_architecture arch;
784 unsigned long machine;
7ed4093a 785{
2e235c93
ILT		 786 if (! bfd_default_set_arch_mach (abfd, arch, machine))
787 return false;
788
9ae74960
ILT		 789 if (arch != bfd_arch_unknown)
790 {
791 boolean unknown;
792
793 NAME(aout,machine_type) (arch, machine, &unknown);
794 if (unknown)
795 return false;
796 }
ce07dd7c 797
214f8f23
KR		 798 /* Determine the size of a relocation entry */
799 switch (arch) {
800 case bfd_arch_sparc:
801 case bfd_arch_a29k:
5cd3dcff 802 case bfd_arch_mips:
214f8f23
KR		 803 obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE;
804 break;
805 default:
806 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
807 break;
808 }
809
2768b3f7 810 return (*aout_backend_info(abfd)->set_sizes) (abfd);
7ed4093a 811}
7ed4093a 812
4c3721d5
ILT		 813static void
814adjust_o_magic (abfd, execp)
815 bfd *abfd;
816 struct internal_exec *execp;
817{
818 file_ptr pos = adata (abfd).exec_bytes_size;
819 bfd_vma vma = 0;
820 int pad = 0;
821
822 /* Text. */
823 obj_textsec(abfd)->filepos = pos;
74942465
ILT		 824 if (!obj_textsec(abfd)->user_set_vma)
825 obj_textsec(abfd)->vma = vma;
826 else
827 vma = obj_textsec(abfd)->vma;
828
4c3721d5
ILT		 829 pos += obj_textsec(abfd)->_raw_size;
830 vma += obj_textsec(abfd)->_raw_size;
831
832 /* Data. */
833 if (!obj_datasec(abfd)->user_set_vma)
834 {
835#if 0 /* ?? Does alignment in the file image really matter? */
836 pad = align_power (vma, obj_datasec(abfd)->alignment_power) - vma;
837#endif
838 obj_textsec(abfd)->_raw_size += pad;
839 pos += pad;
840 vma += pad;
841 obj_datasec(abfd)->vma = vma;
842 }
82b1edf7
KR		 843 else
844 vma = obj_datasec(abfd)->vma;
4c3721d5
ILT		 845 obj_datasec(abfd)->filepos = pos;
846 pos += obj_datasec(abfd)->_raw_size;
847 vma += obj_datasec(abfd)->_raw_size;
848
849 /* BSS. */
850 if (!obj_bsssec(abfd)->user_set_vma)
851 {
852#if 0
853 pad = align_power (vma, obj_bsssec(abfd)->alignment_power) - vma;
854#endif
855 obj_datasec(abfd)->_raw_size += pad;
856 pos += pad;
857 vma += pad;
858 obj_bsssec(abfd)->vma = vma;
859 }
f4945271
ILT		 860 else
861 {
862 /* The VMA of the .bss section is set by the the VMA of the
863 .data section plus the size of the .data section. We may
864 need to add padding bytes to make this true. */
865 pad = obj_bsssec (abfd)->vma - vma;
866 if (pad > 0)
867 {
868 obj_datasec (abfd)->_raw_size += pad;
869 pos += pad;
870 }
871 }
4c3721d5
ILT		 872 obj_bsssec(abfd)->filepos = pos;
873
874 /* Fix up the exec header. */
875 execp->a_text = obj_textsec(abfd)->_raw_size;
876 execp->a_data = obj_datasec(abfd)->_raw_size;
877 execp->a_bss = obj_bsssec(abfd)->_raw_size;
878 N_SET_MAGIC (*execp, OMAGIC);
879}
880
881static void
882adjust_z_magic (abfd, execp)
883 bfd *abfd;
884 struct internal_exec *execp;
885{
886 bfd_size_type data_pad, text_pad;
887 file_ptr text_end;
888 CONST struct aout_backend_data *abdp;
889 int ztih; /* Nonzero if text includes exec header. */
4c3721d5
ILT		 890
891 abdp = aout_backend_info (abfd);
892
893 /* Text. */
0630aba5
ILT		 894 ztih = (abdp != NULL
895 && (abdp->text_includes_header
896 || obj_aout_subformat (abfd) == q_magic_format));
4c3721d5
ILT		 897 obj_textsec(abfd)->filepos = (ztih
898 ? adata(abfd).exec_bytes_size
0630aba5 899 : adata(abfd).zmagic_disk_block_size);
4c3721d5 900 if (! obj_textsec(abfd)->user_set_vma)
e1f99f60
ILT		 901 {
902 /* ?? Do we really need to check for relocs here? */
903 obj_textsec(abfd)->vma = ((abfd->flags & HAS_RELOC)
904 ? 0
905 : (ztih
906 ? (abdp->default_text_vma
907 + adata(abfd).exec_bytes_size)
908 : abdp->default_text_vma));
909 text_pad = 0;
910 }
911 else
912 {
913 /* The .text section is being loaded at an unusual address. We
914 may need to pad it such that the .data section starts at a page
915 boundary. */
916 if (ztih)
917 text_pad = ((obj_textsec (abfd)->filepos - obj_textsec (abfd)->vma)
918 & (adata (abfd).page_size - 1));
919 else
920 text_pad = ((- obj_textsec (abfd)->vma)
921 & (adata (abfd).page_size - 1));
922 }
923
4c3721d5 924 /* Find start of data. */
0630aba5
ILT		 925 if (ztih)
926 {
927 text_end = obj_textsec (abfd)->filepos + obj_textsec (abfd)->_raw_size;
e1f99f60 928 text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end;
0630aba5
ILT		 929 }
930 else
931 {
932 /* Note that if page_size == zmagic_disk_block_size, then
933 filepos == page_size, and this case is the same as the ztih
934 case. */
935 text_end = obj_textsec (abfd)->_raw_size;
e1f99f60 936 text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end;
0630aba5
ILT		 937 text_end += obj_textsec (abfd)->filepos;
938 }
4c3721d5
ILT		 939 obj_textsec(abfd)->_raw_size += text_pad;
940 text_end += text_pad;
941
942 /* Data. */
943 if (!obj_datasec(abfd)->user_set_vma)
944 {
945 bfd_vma vma;
946 vma = obj_textsec(abfd)->vma + obj_textsec(abfd)->_raw_size;
947 obj_datasec(abfd)->vma = BFD_ALIGN (vma, adata(abfd).segment_size);
948 }
4c3721d5
ILT		 949 if (abdp && abdp->zmagic_mapped_contiguous)
950 {
951 text_pad = (obj_datasec(abfd)->vma
952 - obj_textsec(abfd)->vma
953 - obj_textsec(abfd)->_raw_size);
954 obj_textsec(abfd)->_raw_size += text_pad;
955 }
956 obj_datasec(abfd)->filepos = (obj_textsec(abfd)->filepos
957 + obj_textsec(abfd)->_raw_size);
958
959 /* Fix up exec header while we're at it. */
960 execp->a_text = obj_textsec(abfd)->_raw_size;
961 if (ztih && (!abdp || (abdp && !abdp->exec_header_not_counted)))
962 execp->a_text += adata(abfd).exec_bytes_size;
f5419a59
ILT		 963 if (obj_aout_subformat (abfd) == q_magic_format)
964 N_SET_MAGIC (*execp, QMAGIC);
965 else
966 N_SET_MAGIC (*execp, ZMAGIC);
5330499f 967
4c3721d5 968 /* Spec says data section should be rounded up to page boundary. */
4c3721d5
ILT		 969 obj_datasec(abfd)->_raw_size
970 = align_power (obj_datasec(abfd)->_raw_size,
971 obj_bsssec(abfd)->alignment_power);
972 execp->a_data = BFD_ALIGN (obj_datasec(abfd)->_raw_size,
973 adata(abfd).page_size);
974 data_pad = execp->a_data - obj_datasec(abfd)->_raw_size;
975
976 /* BSS. */
977 if (!obj_bsssec(abfd)->user_set_vma)
978 obj_bsssec(abfd)->vma = (obj_datasec(abfd)->vma
979 + obj_datasec(abfd)->_raw_size);
5330499f
DM		 980 /* If the BSS immediately follows the data section and extra space
981 in the page is left after the data section, fudge data
982 in the header so that the bss section looks smaller by that
983 amount. We'll start the bss section there, and lie to the OS.
984 (Note that a linker script, as well as the above assignment,
985 could have explicitly set the BSS vma to immediately follow
986 the data section.) */
987 if (align_power (obj_bsssec(abfd)->vma, obj_bsssec(abfd)->alignment_power)
988 == obj_datasec(abfd)->vma + obj_datasec(abfd)->_raw_size)
989 execp->a_bss = (data_pad > obj_bsssec(abfd)->_raw_size) ? 0 :
990 obj_bsssec(abfd)->_raw_size - data_pad;
991 else
992 execp->a_bss = obj_bsssec(abfd)->_raw_size;
4c3721d5
ILT		 993}
994
995static void
996adjust_n_magic (abfd, execp)
997 bfd *abfd;
998 struct internal_exec *execp;
999{
1000 file_ptr pos = adata(abfd).exec_bytes_size;
1001 bfd_vma vma = 0;
1002 int pad;
1003
1004 /* Text. */
1005 obj_textsec(abfd)->filepos = pos;
1006 if (!obj_textsec(abfd)->user_set_vma)
1007 obj_textsec(abfd)->vma = vma;
1008 else
1009 vma = obj_textsec(abfd)->vma;
1010 pos += obj_textsec(abfd)->_raw_size;
1011 vma += obj_textsec(abfd)->_raw_size;
1012
1013 /* Data. */
1014 obj_datasec(abfd)->filepos = pos;
1015 if (!obj_datasec(abfd)->user_set_vma)
1016 obj_datasec(abfd)->vma = BFD_ALIGN (vma, adata(abfd).segment_size);
1017 vma = obj_datasec(abfd)->vma;
1018
1019 /* Since BSS follows data immediately, see if it needs alignment. */
1020 vma += obj_datasec(abfd)->_raw_size;
1021 pad = align_power (vma, obj_bsssec(abfd)->alignment_power) - vma;
1022 obj_datasec(abfd)->_raw_size += pad;
1023 pos += obj_datasec(abfd)->_raw_size;
1024
1025 /* BSS. */
1026 if (!obj_bsssec(abfd)->user_set_vma)
1027 obj_bsssec(abfd)->vma = vma;
1028 else
1029 vma = obj_bsssec(abfd)->vma;
1030
1031 /* Fix up exec header. */
1032 execp->a_text = obj_textsec(abfd)->_raw_size;
1033 execp->a_data = obj_datasec(abfd)->_raw_size;
1034 execp->a_bss = obj_bsssec(abfd)->_raw_size;
1035 N_SET_MAGIC (*execp, NMAGIC);
1036}
1037
ce07dd7c 1038boolean
8eb5d4be
JK		 1039NAME(aout,adjust_sizes_and_vmas) (abfd, text_size, text_end)
1040 bfd *abfd;
1041 bfd_size_type *text_size;
1042 file_ptr *text_end;
ce07dd7c
KR		 1043{
1044 struct internal_exec *execp = exec_hdr (abfd);
4c3721d5 1045
ec6b18c4
ILT		 1046 if (! NAME(aout,make_sections) (abfd))
1047 return false;
1048
f5419a59
ILT		 1049 if (adata(abfd).magic != undecided_magic)
1050 return true;
4c3721d5 1051
c188b0be 1052 obj_textsec(abfd)->_raw_size =
ce07dd7c
KR		 1053 align_power(obj_textsec(abfd)->_raw_size,
1054 obj_textsec(abfd)->alignment_power);
1055
1056 *text_size = obj_textsec (abfd)->_raw_size;
1057 /* Rule (heuristic) for when to pad to a new page. Note that there
4c3721d5
ILT		 1058 are (at least) two ways demand-paged (ZMAGIC) files have been
1059 handled. Most Berkeley-based systems start the text segment at
34e9ffbc 1060 (TARGET_PAGE_SIZE). However, newer versions of SUNOS start the text
4c3721d5
ILT		 1061 segment right after the exec header; the latter is counted in the
1062 text segment size, and is paged in by the kernel with the rest of
1063 the text. */
ce07dd7c
KR		 1064
1065 /* This perhaps isn't the right way to do this, but made it simpler for me
1066 to understand enough to implement it. Better would probably be to go
1067 right from BFD flags to alignment/positioning characteristics. But the
1068 old code was sloppy enough about handling the flags, and had enough
1069 other magic, that it was a little hard for me to understand. I think
1070 I understand it better now, but I haven't time to do the cleanup this
1071 minute. */
4c3721d5
ILT		 1072
1073 if (abfd->flags & D_PAGED)
1074 /* Whether or not WP_TEXT is set -- let D_PAGED override. */
4c3721d5
ILT		 1075 adata(abfd).magic = z_magic;
1076 else if (abfd->flags & WP_TEXT)
1077 adata(abfd).magic = n_magic;
1078 else
1079 adata(abfd).magic = o_magic;
ce07dd7c
KR		 1080
1081#ifdef BFD_AOUT_DEBUG /* requires gcc2 */
1082#if __GNUC__ >= 2
1083 fprintf (stderr, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n",
1084 ({ char *str;
1085 switch (adata(abfd).magic) {
1086 case n_magic: str = "NMAGIC"; break;
1087 case o_magic: str = "OMAGIC"; break;
1088 case z_magic: str = "ZMAGIC"; break;
1089 default: abort ();
1090 }
1091 str;
1092 }),
4c3721d5
ILT		 1093 obj_textsec(abfd)->vma, obj_textsec(abfd)->_raw_size,
1094 obj_textsec(abfd)->alignment_power,
1095 obj_datasec(abfd)->vma, obj_datasec(abfd)->_raw_size,
1096 obj_datasec(abfd)->alignment_power,
1097 obj_bsssec(abfd)->vma, obj_bsssec(abfd)->_raw_size,
1098 obj_bsssec(abfd)->alignment_power);
ce07dd7c
KR		 1099#endif
1100#endif
1101
1102 switch (adata(abfd).magic)
1103 {
1104 case o_magic:
4c3721d5 1105 adjust_o_magic (abfd, execp);
ce07dd7c
KR		 1106 break;
1107 case z_magic:
4c3721d5 1108 adjust_z_magic (abfd, execp);
ce07dd7c
KR		 1109 break;
1110 case n_magic:
4c3721d5 1111 adjust_n_magic (abfd, execp);
ce07dd7c
KR		 1112 break;
1113 default:
1114 abort ();
1115 }
4c3721d5 1116
ce07dd7c
KR		 1117#ifdef BFD_AOUT_DEBUG
1118 fprintf (stderr, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n",
4c3721d5
ILT		 1119 obj_textsec(abfd)->vma, obj_textsec(abfd)->_raw_size,
1120 obj_textsec(abfd)->filepos,
1121 obj_datasec(abfd)->vma, obj_datasec(abfd)->_raw_size,
1122 obj_datasec(abfd)->filepos,
ce07dd7c
KR		 1123 obj_bsssec(abfd)->vma, obj_bsssec(abfd)->_raw_size);
1124#endif
4c3721d5 1125
d047d16a 1126 return true;
ce07dd7c
KR		 1127}
1128
4e41b5aa
SC		 1129/*
1130FUNCTION
c188b0be 1131 aout_@var{size}_new_section_hook
4e41b5aa 1132
fa2b89f1 1133SYNOPSIS
c188b0be 1134 boolean aout_@var{size}_new_section_hook,
9e2dad8e
JG		 1135 (bfd *abfd,
1136 asection *newsect));
c188b0be
DM		 1137
1138DESCRIPTION
1139 Called by the BFD in response to a @code{bfd_make_section}
1140 request.
6f715d66 1141*/
7ed4093a 1142boolean
8eb5d4be
JK		 1143NAME(aout,new_section_hook) (abfd, newsect)
1144 bfd *abfd;
1145 asection *newsect;
7ed4093a 1146{
6db82ea7
SC		 1147 /* align to double at least */
1148 newsect->alignment_power = bfd_get_arch_info(abfd)->section_align_power;
3f7607af 1149
c188b0be
DM		 1150
1151 if (bfd_get_format (abfd) == bfd_object)
6db82ea7
SC		 1152 {
1153 if (obj_textsec(abfd) == NULL && !strcmp(newsect->name, ".text")) {
1154 obj_textsec(abfd)= newsect;
e48f985c 1155 newsect->target_index = N_TEXT;
6db82ea7
SC		 1156 return true;
1157 }
c188b0be 1158
6db82ea7
SC		 1159 if (obj_datasec(abfd) == NULL && !strcmp(newsect->name, ".data")) {
1160 obj_datasec(abfd) = newsect;
e48f985c 1161 newsect->target_index = N_DATA;
6db82ea7
SC		 1162 return true;
1163 }
c188b0be 1164
6db82ea7
SC		 1165 if (obj_bsssec(abfd) == NULL && !strcmp(newsect->name, ".bss")) {
1166 obj_bsssec(abfd) = newsect;
e48f985c 1167 newsect->target_index = N_BSS;
6db82ea7
SC		 1168 return true;
1169 }
1170
1171 }
c188b0be 1172
6db82ea7
SC		 1173 /* We allow more than three sections internally */
1174 return true;
7ed4093a
SC		 1175}
1176
1177boolean
8eb5d4be
JK		 1178NAME(aout,set_section_contents) (abfd, section, location, offset, count)
1179 bfd *abfd;
1180 sec_ptr section;
1181 PTR location;
1182 file_ptr offset;
1183 bfd_size_type count;
7ed4093a 1184{
7b02b4ed 1185 file_ptr text_end;
7b02b4ed 1186 bfd_size_type text_size;
ce07dd7c 1187
773033d2
ILT		 1188 if (! abfd->output_has_begun)
1189 {
1190 if (! NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end))
1191 return false;
1192 }
12e7087f 1193
773033d2
ILT		 1194 if (section == obj_bsssec (abfd))
1195 {
1196 bfd_set_error (bfd_error_no_contents);
1197 return false;
1198 }
1199
1200 if (section != obj_textsec (abfd)
1201 && section != obj_datasec (abfd))
1202 {
a1774c51
ILT		 1203 (*_bfd_error_handler)
1204 ("%s: can not represent section `%s' in a.out object file format",
1205 bfd_get_filename (abfd), bfd_get_section_name (abfd, section));
773033d2
ILT		 1206 bfd_set_error (bfd_error_nonrepresentable_section);
1207 return false;
1208 }
1209
1210 if (count != 0)
1211 {
1212 if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0
1213 || bfd_write (location, 1, count, abfd) != count)
1214 return false;
1215 }
c188b0be 1216
7ed4093a
SC		 1217 return true;
1218}
1219\f
5c8444f8
ILT		 1220/* Read the external symbols from an a.out file. */
1221
1222static boolean
1223aout_get_external_symbols (abfd)
1224 bfd *abfd;
1225{
1226 if (obj_aout_external_syms (abfd) == (struct external_nlist *) NULL)
1227 {
1228 bfd_size_type count;
1229 struct external_nlist *syms;
1230
1231 count = exec_hdr (abfd)->a_syms / EXTERNAL_NLIST_SIZE;
1232
7ac84736 1233#ifdef USE_MMAP
4fe6d901
KR		 1234 if (bfd_get_file_window (abfd,
1235 obj_sym_filepos (abfd), exec_hdr (abfd)->a_syms,
0bb8ff19 1236 &obj_aout_sym_window (abfd), true) == false)
4fe6d901
KR		 1237 return false;
1238 syms = (struct external_nlist *) obj_aout_sym_window (abfd).data;
7ac84736
KR		 1239#else
1240 /* We allocate using malloc to make the values easy to free
1241 later on. If we put them on the obstack it might not be
1242 possible to free them. */
1243 syms = ((struct external_nlist *)
58142f10 1244 bfd_malloc ((size_t) count * EXTERNAL_NLIST_SIZE));
7ac84736 1245 if (syms == (struct external_nlist *) NULL && count != 0)
58142f10 1246 return false;
7ac84736
KR		 1247
1248 if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
1249 || (bfd_read (syms, 1, exec_hdr (abfd)->a_syms, abfd)
1250 != exec_hdr (abfd)->a_syms))
1251 {
1252 free (syms);
1253 return false;
1254 }
1255#endif
5c8444f8
ILT		 1256
1257 obj_aout_external_syms (abfd) = syms;
1258 obj_aout_external_sym_count (abfd) = count;
1259 }
1260
4f019d04
ILT		 1261 if (obj_aout_external_strings (abfd) == NULL
1262 && exec_hdr (abfd)->a_syms != 0)
5c8444f8
ILT		 1263 {
1264 unsigned char string_chars[BYTES_IN_WORD];
1265 bfd_size_type stringsize;
1266 char *strings;
1267
1268 /* Get the size of the strings. */
1269 if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0
1270 || (bfd_read ((PTR) string_chars, BYTES_IN_WORD, 1, abfd)
1271 != BYTES_IN_WORD))
1272 return false;
1273 stringsize = GET_WORD (abfd, string_chars);
1274
7ac84736 1275#ifdef USE_MMAP
4fe6d901 1276 if (bfd_get_file_window (abfd, obj_str_filepos (abfd), stringsize,
0bb8ff19 1277 &obj_aout_string_window (abfd), true) == false)
4fe6d901
KR		 1278 return false;
1279 strings = (char *) obj_aout_string_window (abfd).data;
7ac84736 1280#else
58142f10 1281 strings = (char *) bfd_malloc ((size_t) stringsize + 1);
7ac84736 1282 if (strings == NULL)
58142f10 1283 return false;
7ac84736
KR		 1284
1285 /* Skip space for the string count in the buffer for convenience
1286 when using indexes. */
1287 if (bfd_read (strings + BYTES_IN_WORD, 1, stringsize - BYTES_IN_WORD,
1288 abfd)
1289 != stringsize - BYTES_IN_WORD)
1290 {
1291 free (strings);
1292 return false;
1293 }
1294#endif
5c8444f8 1295
1afd2380
ILT		 1296 /* Ensure that a zero index yields an empty string. */
1297 strings[0] = '\0';
1298
7ac84736 1299 strings[stringsize - 1] = 0;
5c8444f8
ILT		 1300
1301 obj_aout_external_strings (abfd) = strings;
1302 obj_aout_external_string_size (abfd) = stringsize;
1303 }
1304
1305 return true;
1306}
1307
4298e311
ILT		 1308/* Translate an a.out symbol into a BFD symbol. The desc, other, type
1309 and symbol->value fields of CACHE_PTR will be set from the a.out
1310 nlist structure. This function is responsible for setting
1311 symbol->flags and symbol->section, and adjusting symbol->value. */
c188b0be 1312
9783e04a 1313static boolean
4298e311
ILT		 1314translate_from_native_sym_flags (abfd, cache_ptr)
1315 bfd *abfd;
1316 aout_symbol_type *cache_ptr;
9e2dad8e 1317{
4298e311
ILT		 1318 flagword visible;
1319
1320 if ((cache_ptr->type & N_STAB) != 0
1321 || cache_ptr->type == N_FN)
1322 {
1323 asection *sec;
1324
1325 /* This is a debugging symbol. */
1326
1327 cache_ptr->symbol.flags = BSF_DEBUGGING;
1328
1329 /* Work out the symbol section. */
1330 switch (cache_ptr->type & N_TYPE)
1331 {
1332 case N_TEXT:
1333 case N_FN:
1334 sec = obj_textsec (abfd);
1335 break;
1336 case N_DATA:
1337 sec = obj_datasec (abfd);
1338 break;
1339 case N_BSS:
1340 sec = obj_bsssec (abfd);
1341 break;
1342 default:
1343 case N_ABS:
4587b578 1344 sec = bfd_abs_section_ptr;
4298e311
ILT		 1345 break;
1346 }
1347
1348 cache_ptr->symbol.section = sec;
1349 cache_ptr->symbol.value -= sec->vma;
1350
1351 return true;
1352 }
1353
1354 /* Get the default visibility. This does not apply to all types, so
1355 we just hold it in a local variable to use if wanted. */
1356 if ((cache_ptr->type & N_EXT) == 0)
1357 visible = BSF_LOCAL;
1358 else
1359 visible = BSF_GLOBAL;
1360
1361 switch (cache_ptr->type)
6db82ea7 1362 {
4298e311
ILT		 1363 default:
1364 case N_ABS: case N_ABS | N_EXT:
4587b578 1365 cache_ptr->symbol.section = bfd_abs_section_ptr;
4298e311
ILT		 1366 cache_ptr->symbol.flags = visible;
1367 break;
1368
1369 case N_UNDF | N_EXT:
1370 if (cache_ptr->symbol.value != 0)
1371 {
1372 /* This is a common symbol. */
1373 cache_ptr->symbol.flags = BSF_GLOBAL;
4587b578 1374 cache_ptr->symbol.section = bfd_com_section_ptr;
4298e311
ILT		 1375 }
1376 else
1377 {
1378 cache_ptr->symbol.flags = 0;
4587b578 1379 cache_ptr->symbol.section = bfd_und_section_ptr;
4298e311
ILT		 1380 }
1381 break;
1382
1383 case N_TEXT: case N_TEXT | N_EXT:
1384 cache_ptr->symbol.section = obj_textsec (abfd);
1385 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1386 cache_ptr->symbol.flags = visible;
1387 break;
1388
2cd086e3
ILT		 1389 /* N_SETV symbols used to represent set vectors placed in the
1390 data section. They are no longer generated. Theoretically,
1391 it was possible to extract the entries and combine them with
1392 new ones, although I don't know if that was ever actually
1393 done. Unless that feature is restored, treat them as data
1394 symbols. */
1395 case N_SETV: case N_SETV | N_EXT:
4298e311
ILT		 1396 case N_DATA: case N_DATA | N_EXT:
1397 cache_ptr->symbol.section = obj_datasec (abfd);
1398 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1399 cache_ptr->symbol.flags = visible;
1400 break;
1401
1402 case N_BSS: case N_BSS | N_EXT:
1403 cache_ptr->symbol.section = obj_bsssec (abfd);
1404 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1405 cache_ptr->symbol.flags = visible;
1406 break;
1407
964affdc
DM		 1408 case N_SETA: case N_SETA | N_EXT:
1409 case N_SETT: case N_SETT | N_EXT:
1410 case N_SETD: case N_SETD | N_EXT:
1411 case N_SETB: case N_SETB | N_EXT:
ebd24135 1412 {
ebd24135 1413 asection *section;
4298e311 1414 arelent_chain *reloc;
ebd24135 1415 asection *into_section;
9783e04a 1416
4298e311
ILT		 1417 /* This is a set symbol. The name of the symbol is the name
1418 of the set (e.g., __CTOR_LIST__). The value of the symbol
1419 is the value to add to the set. We create a section with
1420 the same name as the symbol, and add a reloc to insert the
1421 appropriate value into the section.
1422
1423 This action is actually obsolete; it used to make the
1424 linker do the right thing, but the linker no longer uses
1425 this function. */
1426
1427 section = bfd_get_section_by_name (abfd, cache_ptr->symbol.name);
1428 if (section == NULL)
1429 {
1430 char *copy;
1431
1432 copy = bfd_alloc (abfd, strlen (cache_ptr->symbol.name) + 1);
1433 if (copy == NULL)
a9713b91 1434 return false;
4298e311
ILT		 1435
1436 strcpy (copy, cache_ptr->symbol.name);
1437 section = bfd_make_section (abfd, copy);
1438 if (section == NULL)
1439 return false;
1440 }
1441
1442 reloc = (arelent_chain *) bfd_alloc (abfd, sizeof (arelent_chain));
1443 if (reloc == NULL)
a9713b91 1444 return false;
9783e04a 1445
4298e311
ILT		 1446 /* Build a relocation entry for the constructor. */
1447 switch (cache_ptr->type & N_TYPE)
a99c3d70 1448 {
4298e311 1449 case N_SETA:
4587b578 1450 into_section = bfd_abs_section_ptr;
ebd24135
ILT		 1451 cache_ptr->type = N_ABS;
1452 break;
4298e311
ILT		 1453 case N_SETT:
1454 into_section = obj_textsec (abfd);
ebd24135
ILT		 1455 cache_ptr->type = N_TEXT;
1456 break;
4298e311
ILT		 1457 case N_SETD:
1458 into_section = obj_datasec (abfd);
ebd24135
ILT		 1459 cache_ptr->type = N_DATA;
1460 break;
4298e311
ILT		 1461 case N_SETB:
1462 into_section = obj_bsssec (abfd);
ebd24135
ILT		 1463 cache_ptr->type = N_BSS;
1464 break;
ebd24135 1465 }
88dfcd68 1466
4298e311
ILT		 1467 /* Build a relocation pointing into the constructor section
1468 pointing at the symbol in the set vector specified. */
ebd24135 1469 reloc->relent.addend = cache_ptr->symbol.value;
4298e311 1470 cache_ptr->symbol.section = into_section;
ebd24135 1471 reloc->relent.sym_ptr_ptr = into_section->symbol_ptr_ptr;
6db82ea7 1472
4298e311
ILT		 1473 /* We modify the symbol to belong to a section depending upon
1474 the name of the symbol, and add to the size of the section
1475 to contain a pointer to the symbol. Build a reloc entry to
1476 relocate to this symbol attached to this section. */
a8a916c8 1477 section->flags = SEC_CONSTRUCTOR | SEC_RELOC;
a99c3d70 1478
ebd24135
ILT		 1479 section->reloc_count++;
1480 section->alignment_power = 2;
a99c3d70 1481
ebd24135
ILT		 1482 reloc->next = section->constructor_chain;
1483 section->constructor_chain = reloc;
1484 reloc->relent.address = section->_raw_size;
4298e311
ILT		 1485 section->_raw_size += BYTES_IN_WORD;
1486
f42fe159 1487 reloc->relent.howto = CTOR_TABLE_RELOC_HOWTO(abfd);
a99c3d70 1488
ebd24135
ILT		 1489 cache_ptr->symbol.flags |= BSF_CONSTRUCTOR;
1490 }
1491 break;
0c205af2 1492
4298e311
ILT		 1493 case N_WARNING:
1494 /* This symbol is the text of a warning message. The next
1495 symbol is the symbol to associate the warning with. If a
1496 reference is made to that symbol, a warning is issued. */
1497 cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_WARNING;
4587b578 1498 cache_ptr->symbol.section = bfd_abs_section_ptr;
4298e311 1499 break;
ebd24135 1500
4298e311
ILT		 1501 case N_INDR: case N_INDR | N_EXT:
1502 /* An indirect symbol. This consists of two symbols in a row.
1503 The first symbol is the name of the indirection. The second
1504 symbol is the name of the target. A reference to the first
1505 symbol becomes a reference to the second. */
1506 cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_INDIRECT | visible;
4587b578 1507 cache_ptr->symbol.section = bfd_ind_section_ptr;
4298e311
ILT		 1508 break;
1509
1510 case N_WEAKU:
4587b578 1511 cache_ptr->symbol.section = bfd_und_section_ptr;
4298e311
ILT		 1512 cache_ptr->symbol.flags = BSF_WEAK;
1513 break;
1514
1515 case N_WEAKA:
4587b578 1516 cache_ptr->symbol.section = bfd_abs_section_ptr;
4298e311
ILT		 1517 cache_ptr->symbol.flags = BSF_WEAK;
1518 break;
1519
1520 case N_WEAKT:
1521 cache_ptr->symbol.section = obj_textsec (abfd);
1522 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1523 cache_ptr->symbol.flags = BSF_WEAK;
1524 break;
1525
1526 case N_WEAKD:
1527 cache_ptr->symbol.section = obj_datasec (abfd);
1528 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1529 cache_ptr->symbol.flags = BSF_WEAK;
1530 break;
1531
1532 case N_WEAKB:
1533 cache_ptr->symbol.section = obj_bsssec (abfd);
1534 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1535 cache_ptr->symbol.flags = BSF_WEAK;
1536 break;
a99c3d70 1537 }
4298e311 1538
9783e04a 1539 return true;
7ed4093a
SC		 1540}
1541
4298e311 1542/* Set the fields of SYM_POINTER according to CACHE_PTR. */
6db82ea7 1543
4c3721d5 1544static boolean
4298e311 1545translate_to_native_sym_flags (abfd, cache_ptr, sym_pointer)
8eb5d4be 1546 bfd *abfd;
4298e311
ILT		 1547 asymbol *cache_ptr;
1548 struct external_nlist *sym_pointer;
7ed4093a
SC		 1549{
1550 bfd_vma value = cache_ptr->value;
943fbd5b
KR		 1551 asection *sec;
1552 bfd_vma off;
7ed4093a 1553
4298e311
ILT		 1554 /* Mask out any existing type bits in case copying from one section
1555 to another. */
10dea9ed 1556 sym_pointer->e_type[0] &= ~N_TYPE;
a99c3d70 1557
943fbd5b
KR		 1558 sec = bfd_get_section (cache_ptr);
1559 off = 0;
1560
1561 if (sec == NULL)
4298e311 1562 {
943fbd5b
KR		 1563 /* This case occurs, e.g., for the *DEBUG* section of a COFF
1564 file. */
a1774c51
ILT		 1565 (*_bfd_error_handler)
1566 ("%s: can not represent section `%s' in a.out object file format",
1567 bfd_get_filename (abfd), bfd_get_section_name (abfd, sec));
4298e311
ILT		 1568 bfd_set_error (bfd_error_nonrepresentable_section);
1569 return false;
1570 }
943fbd5b
KR		 1571
1572 if (sec->output_section != NULL)
1573 {
1574 off = sec->output_offset;
1575 sec = sec->output_section;
1576 }
1577
1578 if (bfd_is_abs_section (sec))
1579 sym_pointer->e_type[0] |= N_ABS;
1580 else if (sec == obj_textsec (abfd))
1581 sym_pointer->e_type[0] |= N_TEXT;
1582 else if (sec == obj_datasec (abfd))
1583 sym_pointer->e_type[0] |= N_DATA;
1584 else if (sec == obj_bsssec (abfd))
1585 sym_pointer->e_type[0] |= N_BSS;
1586 else if (bfd_is_und_section (sec))
4587b578 1587 sym_pointer->e_type[0] = N_UNDF | N_EXT;
943fbd5b 1588 else if (bfd_is_ind_section (sec))
4587b578 1589 sym_pointer->e_type[0] = N_INDR;
943fbd5b 1590 else if (bfd_is_com_section (sec))
4298e311
ILT		 1591 sym_pointer->e_type[0] = N_UNDF | N_EXT;
1592 else
1593 {
a1774c51
ILT		 1594 (*_bfd_error_handler)
1595 ("%s: can not represent section `%s' in a.out object file format",
1596 bfd_get_filename (abfd), bfd_get_section_name (abfd, sec));
4298e311
ILT		 1597 bfd_set_error (bfd_error_nonrepresentable_section);
1598 return false;
1599 }
6f56c941 1600
6db82ea7 1601 /* Turn the symbol from section relative to absolute again */
943fbd5b 1602 value += sec->vma + off;
c188b0be 1603
4298e311 1604 if ((cache_ptr->flags & BSF_WARNING) != 0)
d7e34f67 1605 sym_pointer->e_type[0] = N_WARNING;
c188b0be 1606
4298e311
ILT		 1607 if ((cache_ptr->flags & BSF_DEBUGGING) != 0)
1608 sym_pointer->e_type[0] = ((aout_symbol_type *) cache_ptr)->type;
1609 else if ((cache_ptr->flags & BSF_GLOBAL) != 0)
3caa6924 1610 sym_pointer->e_type[0] |= N_EXT;
4298e311
ILT		 1611
1612 if ((cache_ptr->flags & BSF_CONSTRUCTOR) != 0)
1613 {
1614 int type = ((aout_symbol_type *) cache_ptr)->type;
1615 switch (type)
1616 {
1617 case N_ABS: type = N_SETA; break;
1618 case N_TEXT: type = N_SETT; break;
1619 case N_DATA: type = N_SETD; break;
1620 case N_BSS: type = N_SETB; break;
1621 }
1622 sym_pointer->e_type[0] = type;
1623 }
1624
1625 if ((cache_ptr->flags & BSF_WEAK) != 0)
1626 {
1627 int type;
1628
1629 switch (sym_pointer->e_type[0] & N_TYPE)
1630 {
1631 default:
1632 case N_ABS: type = N_WEAKA; break;
1633 case N_TEXT: type = N_WEAKT; break;
1634 case N_DATA: type = N_WEAKD; break;
1635 case N_BSS: type = N_WEAKB; break;
1636 case N_UNDF: type = N_WEAKU; break;
1637 }
1638 sym_pointer->e_type[0] = type;
1639 }
6db82ea7 1640
7ed4093a 1641 PUT_WORD(abfd, value, sym_pointer->e_value);
4c3721d5
ILT		 1642
1643 return true;
7ed4093a
SC		 1644}
1645\f
1646/* Native-level interface to symbols. */
1647
7ed4093a 1648asymbol *
8eb5d4be
JK		 1649NAME(aout,make_empty_symbol) (abfd)
1650 bfd *abfd;
9e2dad8e
JG		 1651{
1652 aout_symbol_type *new =
1653 (aout_symbol_type *)bfd_zalloc (abfd, sizeof (aout_symbol_type));
9783e04a 1654 if (!new)
a9713b91 1655 return NULL;
9e2dad8e 1656 new->symbol.the_bfd = abfd;
fa2b89f1 1657
9e2dad8e
JG		 1658 return &new->symbol;
1659}
7ed4093a 1660
0ee75d02
ILT		 1661/* Translate a set of internal symbols into external symbols. */
1662
fa77c704
ILT		 1663boolean
1664NAME(aout,translate_symbol_table) (abfd, in, ext, count, str, strsize, dynamic)
0ee75d02
ILT		 1665 bfd *abfd;
1666 aout_symbol_type *in;
1667 struct external_nlist *ext;
1668 bfd_size_type count;
1669 char *str;
1670 bfd_size_type strsize;
1671 boolean dynamic;
1672{
1673 struct external_nlist *ext_end;
1674
1675 ext_end = ext + count;
1676 for (; ext < ext_end; ext++, in++)
1677 {
1678 bfd_vma x;
1679
1680 x = GET_WORD (abfd, ext->e_strx);
1681 in->symbol.the_bfd = abfd;
ca1c6bec
ILT		 1682
1683 /* For the normal symbols, the zero index points at the number
1684 of bytes in the string table but is to be interpreted as the
1685 null string. For the dynamic symbols, the number of bytes in
1686 the string table is stored in the __DYNAMIC structure and the
1687 zero index points at an actual string. */
1688 if (x == 0 && ! dynamic)
1689 in->symbol.name = "";
1690 else if (x < strsize)
0ee75d02
ILT		 1691 in->symbol.name = str + x;
1692 else
1693 return false;
1694
1695 in->symbol.value = GET_SWORD (abfd, ext->e_value);
1696 in->desc = bfd_h_get_16 (abfd, ext->e_desc);
1697 in->other = bfd_h_get_8 (abfd, ext->e_other);
1698 in->type = bfd_h_get_8 (abfd, ext->e_type);
74942465 1699 in->symbol.udata.p = NULL;
0ee75d02 1700
4298e311 1701 if (! translate_from_native_sym_flags (abfd, in))
9783e04a 1702 return false;
0ee75d02
ILT		 1703
1704 if (dynamic)
1705 in->symbol.flags |= BSF_DYNAMIC;
1706 }
1707
1708 return true;
1709}
1710
1711/* We read the symbols into a buffer, which is discarded when this
1712 function exits. We read the strings into a buffer large enough to
1713 hold them all plus all the cached symbol entries. */
1714
7ed4093a 1715boolean
8eb5d4be
JK		 1716NAME(aout,slurp_symbol_table) (abfd)
1717 bfd *abfd;
9e2dad8e 1718{
5c8444f8 1719 struct external_nlist *old_external_syms;
9e2dad8e 1720 aout_symbol_type *cached;
5c8444f8 1721 size_t cached_size;
0f213cc2 1722
9e2dad8e 1723 /* If there's no work to be done, don't do any */
5c8444f8
ILT		 1724 if (obj_aout_symbols (abfd) != (aout_symbol_type *) NULL)
1725 return true;
1726
1727 old_external_syms = obj_aout_external_syms (abfd);
1728
1729 if (! aout_get_external_symbols (abfd))
1730 return false;
1731
fa77c704 1732 cached_size = (obj_aout_external_sym_count (abfd)
5c8444f8 1733 * sizeof (aout_symbol_type));
58142f10 1734 cached = (aout_symbol_type *) bfd_malloc (cached_size);
74942465 1735 if (cached == NULL && cached_size != 0)
58142f10 1736 return false;
74942465
ILT		 1737 if (cached_size != 0)
1738 memset (cached, 0, cached_size);
5c8444f8
ILT		 1739
1740 /* Convert from external symbol information to internal. */
fa77c704
ILT		 1741 if (! (NAME(aout,translate_symbol_table)
1742 (abfd, cached,
1743 obj_aout_external_syms (abfd),
1744 obj_aout_external_sym_count (abfd),
1745 obj_aout_external_strings (abfd),
1746 obj_aout_external_string_size (abfd),
1747 false)))
0f213cc2 1748 {
5c8444f8 1749 free (cached);
0f213cc2
KR		 1750 return false;
1751 }
1752
fa77c704 1753 bfd_get_symcount (abfd) = obj_aout_external_sym_count (abfd);
0f213cc2 1754
5c8444f8 1755 obj_aout_symbols (abfd) = cached;
0f213cc2 1756
5c8444f8
ILT		 1757 /* It is very likely that anybody who calls this function will not
1758 want the external symbol information, so if it was allocated
1759 because of our call to aout_get_external_symbols, we free it up
1760 right away to save space. */
1761 if (old_external_syms == (struct external_nlist *) NULL
1762 && obj_aout_external_syms (abfd) != (struct external_nlist *) NULL)
1763 {
7ac84736 1764#ifdef USE_MMAP
4fe6d901 1765 bfd_free_window (&obj_aout_sym_window (abfd));
7ac84736
KR		 1766#else
1767 free (obj_aout_external_syms (abfd));
1768#endif
5c8444f8 1769 obj_aout_external_syms (abfd) = NULL;
0ee75d02 1770 }
0f213cc2 1771
9e2dad8e
JG		 1772 return true;
1773}
0f213cc2 1774\f
d17fc4c9
ILT		 1775/* We use a hash table when writing out symbols so that we only write
1776 out a particular string once. This helps particularly when the
1777 linker writes out stabs debugging entries, because each different
1778 contributing object file tends to have many duplicate stabs
1779 strings.
1780
d63d0479
ILT		 1781 This hash table code breaks dbx on SunOS 4.1.3, so we don't do it
1782 if BFD_TRADITIONAL_FORMAT is set. */
0f213cc2 1783
d17fc4c9 1784static bfd_size_type add_to_stringtab
1afd2380
ILT		 1785 PARAMS ((bfd *, struct bfd_strtab_hash *, const char *, boolean));
1786static boolean emit_stringtab PARAMS ((bfd *, struct bfd_strtab_hash *));
d17fc4c9
ILT		 1787
1788/* Get the index of a string in a strtab, adding it if it is not
1afd2380 1789 already present. */
d17fc4c9
ILT		 1790
1791static INLINE bfd_size_type
1792add_to_stringtab (abfd, tab, str, copy)
0f213cc2 1793 bfd *abfd;
1afd2380 1794 struct bfd_strtab_hash *tab;
d17fc4c9
ILT		 1795 const char *str;
1796 boolean copy;
0f213cc2 1797{
1afd2380 1798 boolean hash;
435b470e 1799 bfd_size_type index;
0f213cc2 1800
d17fc4c9 1801 /* An index of 0 always means the empty string. */
204ba9e3 1802 if (str == 0 || *str == '\0')
d17fc4c9 1803 return 0;
0f213cc2 1804
1afd2380
ILT		 1805 /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx
1806 doesn't understand a hashed string table. */
1807 hash = true;
1808 if ((abfd->flags & BFD_TRADITIONAL_FORMAT) != 0)
1809 hash = false;
0f213cc2 1810
435b470e
ILT		 1811 index = _bfd_stringtab_add (tab, str, hash, copy);
1812
1813 if (index != (bfd_size_type) -1)
1814 {
1815 /* Add BYTES_IN_WORD to the return value to account for the
1816 space taken up by the string table size. */
1817 index += BYTES_IN_WORD;
1818 }
1819
1820 return index;
0f213cc2
KR		 1821}
1822
d17fc4c9
ILT		 1823/* Write out a strtab. ABFD is already at the right location in the
1824 file. */
1825
29e626eb 1826static boolean
d17fc4c9
ILT		 1827emit_stringtab (abfd, tab)
1828 register bfd *abfd;
1afd2380 1829 struct bfd_strtab_hash *tab;
0f213cc2 1830{
d17fc4c9 1831 bfd_byte buffer[BYTES_IN_WORD];
0f213cc2 1832
1afd2380
ILT		 1833 /* The string table starts with the size. */
1834 PUT_WORD (abfd, _bfd_stringtab_size (tab) + BYTES_IN_WORD, buffer);
29e626eb
ILT		 1835 if (bfd_write ((PTR) buffer, 1, BYTES_IN_WORD, abfd) != BYTES_IN_WORD)
1836 return false;
0f213cc2 1837
1afd2380 1838 return _bfd_stringtab_emit (abfd, tab);
0f213cc2 1839}
d17fc4c9 1840\f
4c3721d5 1841boolean
8eb5d4be
JK		 1842NAME(aout,write_syms) (abfd)
1843 bfd *abfd;
0f213cc2
KR		 1844{
1845 unsigned int count ;
1846 asymbol **generic = bfd_get_outsymbols (abfd);
1afd2380 1847 struct bfd_strtab_hash *strtab;
0f213cc2 1848
1afd2380
ILT		 1849 strtab = _bfd_stringtab_init ();
1850 if (strtab == NULL)
d17fc4c9 1851 return false;
0f213cc2
KR		 1852
1853 for (count = 0; count < bfd_get_symcount (abfd); count++)
1854 {
7ed4093a 1855 asymbol *g = generic[count];
d17fc4c9 1856 bfd_size_type indx;
7ed4093a 1857 struct external_nlist nsp;
6db82ea7 1858
1afd2380 1859 indx = add_to_stringtab (abfd, strtab, g->name, false);
d17fc4c9
ILT		 1860 if (indx == (bfd_size_type) -1)
1861 goto error_return;
1862 PUT_WORD (abfd, indx, (bfd_byte *) nsp.e_strx);
6db82ea7 1863
0f213cc2
KR		 1864 if (bfd_asymbol_flavour(g) == abfd->xvec->flavour)
1865 {
1866 bfd_h_put_16(abfd, aout_symbol(g)->desc, nsp.e_desc);
1867 bfd_h_put_8(abfd, aout_symbol(g)->other, nsp.e_other);
1868 bfd_h_put_8(abfd, aout_symbol(g)->type, nsp.e_type);
1869 }
7ed4093a 1870 else
0f213cc2
KR		 1871 {
1872 bfd_h_put_16(abfd,0, nsp.e_desc);
1873 bfd_h_put_8(abfd, 0, nsp.e_other);
1874 bfd_h_put_8(abfd, 0, nsp.e_type);
1875 }
7b02b4ed 1876
4298e311 1877 if (! translate_to_native_sym_flags (abfd, g, &nsp))
d17fc4c9 1878 goto error_return;
7b02b4ed 1879
4c3721d5
ILT		 1880 if (bfd_write((PTR)&nsp,1,EXTERNAL_NLIST_SIZE, abfd)
1881 != EXTERNAL_NLIST_SIZE)
d17fc4c9 1882 goto error_return;
7ed4093a 1883
ae115e51 1884 /* NB: `KEEPIT' currently overlays `udata.p', so set this only
0f213cc2
KR		 1885 here, at the end. */
1886 g->KEEPIT = count;
1887 }
7ed4093a 1888
1afd2380 1889 if (! emit_stringtab (abfd, strtab))
d17fc4c9
ILT		 1890 goto error_return;
1891
1afd2380 1892 _bfd_stringtab_free (strtab);
d17fc4c9
ILT		 1893
1894 return true;
1895
1896error_return:
1afd2380 1897 _bfd_stringtab_free (strtab);
d17fc4c9 1898 return false;
0f213cc2 1899}
7ed4093a 1900
0f213cc2 1901\f
326e32d7 1902long
8eb5d4be
JK		 1903NAME(aout,get_symtab) (abfd, location)
1904 bfd *abfd;
1905 asymbol **location;
3f7607af 1906{
7ed4093a
SC		 1907 unsigned int counter = 0;
1908 aout_symbol_type *symbase;
ce07dd7c 1909
326e32d7
ILT		 1910 if (!NAME(aout,slurp_symbol_table)(abfd))
1911 return -1;
ce07dd7c 1912
7ed4093a
SC		 1913 for (symbase = obj_aout_symbols(abfd); counter++ < bfd_get_symcount (abfd);)
1914 *(location++) = (asymbol *)( symbase++);
1915 *location++ =0;
ce07dd7c 1916 return bfd_get_symcount (abfd);
3f7607af 1917}
7ed4093a
SC		 1918
1919\f
1920/* Standard reloc stuff */
1921/* Output standard relocation information to a file in target byte order. */
1922
1923void
8eb5d4be
JK		 1924NAME(aout,swap_std_reloc_out) (abfd, g, natptr)
1925 bfd *abfd;
1926 arelent *g;
1927 struct reloc_std_external *natptr;
3f7607af 1928{
6db82ea7
SC		 1929 int r_index;
1930 asymbol *sym = *(g->sym_ptr_ptr);
1931 int r_extern;
1932 unsigned int r_length;
1933 int r_pcrel;
1934 int r_baserel, r_jmptable, r_relative;
6db82ea7 1935 asection *output_section = sym->section->output_section;
ce07dd7c 1936
6db82ea7 1937 PUT_WORD(abfd, g->address, natptr->r_address);
ce07dd7c 1938
6db82ea7
SC		 1939 r_length = g->howto->size ; /* Size as a power of two */
1940 r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */
c188b0be
DM		 1941 /* XXX This relies on relocs coming from a.out files. */
1942 r_baserel = (g->howto->type & 8) != 0;
cb9461ff
JK		 1943 r_jmptable = (g->howto->type & 16) != 0;
1944 r_relative = (g->howto->type & 32) != 0;
c188b0be 1945
728472f1
ILT		 1946#if 0
1947 /* For a standard reloc, the addend is in the object file. */
6db82ea7 1948 r_addend = g->addend + (*(g->sym_ptr_ptr))->section->output_section->vma;
728472f1 1949#endif
c188b0be 1950
6db82ea7
SC		 1951 /* name was clobbered by aout_write_syms to be symbol index */
1952
c188b0be 1953 /* If this relocation is relative to a symbol then set the
2768b3f7
SC		 1954 r_index to the symbols index, and the r_extern bit.
1955
1956 Absolute symbols can come in in two ways, either as an offset
1957 from the abs section, or as a symbol which has an abs value.
1958 check for that here
1959 */
c188b0be 1960
2768b3f7 1961
382f2a3d 1962 if (bfd_is_com_section (output_section)
4587b578
ILT		 1963 || bfd_is_abs_section (output_section)
1964 || bfd_is_und_section (output_section))
ce07dd7c 1965 {
4587b578 1966 if (bfd_abs_section_ptr->symbol == sym)
2768b3f7
SC		 1967 {
1968 /* Whoops, looked like an abs symbol, but is really an offset
1969 from the abs section */
1970 r_index = 0;
1971 r_extern = 0;
1972 }
c188b0be 1973 else
2768b3f7
SC		 1974 {
1975 /* Fill in symbol */
1976 r_extern = 1;
ae115e51 1977 r_index = (*(g->sym_ptr_ptr))->KEEPIT;
c188b0be 1978
2768b3f7 1979 }
ce07dd7c 1980 }
c188b0be 1981 else
ce07dd7c
KR		 1982 {
1983 /* Just an ordinary section */
1984 r_extern = 0;
c188b0be 1985 r_index = output_section->target_index;
ce07dd7c
KR		 1986 }
1987
6db82ea7
SC		 1988 /* now the fun stuff */
1989 if (abfd->xvec->header_byteorder_big_p != false) {
7ed4093a
SC		 1990 natptr->r_index[0] = r_index >> 16;
1991 natptr->r_index[1] = r_index >> 8;
1992 natptr->r_index[2] = r_index;
1993 natptr->r_type[0] =
6db82ea7
SC		 1994 (r_extern? RELOC_STD_BITS_EXTERN_BIG: 0)
1995 | (r_pcrel? RELOC_STD_BITS_PCREL_BIG: 0)
1996 | (r_baserel? RELOC_STD_BITS_BASEREL_BIG: 0)
1997 | (r_jmptable? RELOC_STD_BITS_JMPTABLE_BIG: 0)
1998 | (r_relative? RELOC_STD_BITS_RELATIVE_BIG: 0)
1999 | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG);
7ed4093a 2000 } else {
6db82ea7
SC		 2001 natptr->r_index[2] = r_index >> 16;
2002 natptr->r_index[1] = r_index >> 8;
2003 natptr->r_index[0] = r_index;
2004 natptr->r_type[0] =
2005 (r_extern? RELOC_STD_BITS_EXTERN_LITTLE: 0)
7ed4093a 2006 | (r_pcrel? RELOC_STD_BITS_PCREL_LITTLE: 0)
6db82ea7
SC		 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 }
3f7607af 2012}
7ed4093a
SC		 2013
2014
2015/* Extended stuff */
2016/* Output extended relocation information to a file in target byte order. */
2017
2018void
8eb5d4be
JK		 2019NAME(aout,swap_ext_reloc_out) (abfd, g, natptr)
2020 bfd *abfd;
2021 arelent *g;
2022 register struct reloc_ext_external *natptr;
3f7607af 2023{
6db82ea7
SC		 2024 int r_index;
2025 int r_extern;
2026 unsigned int r_type;
2027 unsigned int r_addend;
c188b0be 2028 asymbol *sym = *(g->sym_ptr_ptr);
6db82ea7 2029 asection *output_section = sym->section->output_section;
c188b0be 2030
6db82ea7 2031 PUT_WORD (abfd, g->address, natptr->r_address);
c188b0be 2032
6db82ea7 2033 r_type = (unsigned int) g->howto->type;
7ed4093a 2034
ae115e51
ILT		 2035 r_addend = g->addend;
2036 if ((sym->flags & BSF_SECTION_SYM) != 0)
2037 r_addend += (*(g->sym_ptr_ptr))->section->output_section->vma;
7ed4093a 2038
c188b0be 2039 /* If this relocation is relative to a symbol then set the
2768b3f7
SC		 2040 r_index to the symbols index, and the r_extern bit.
2041
2042 Absolute symbols can come in in two ways, either as an offset
2043 from the abs section, or as a symbol which has an abs value.
c188b0be
DM		 2044 check for that here. */
2045
ae115e51 2046 if (bfd_is_abs_section (bfd_get_section (sym)))
2768b3f7 2047 {
2768b3f7 2048 r_extern = 0;
ae115e51
ILT		 2049 r_index = 0;
2050 }
2051 else if ((sym->flags & BSF_SECTION_SYM) == 0)
2768b3f7 2052 {
f69e888e
ILT		 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;
ae115e51 2058 r_index = (*(g->sym_ptr_ptr))->KEEPIT;
2768b3f7 2059 }
c188b0be 2060 else
ae115e51
ILT		 2061 {
2062 /* Just an ordinary section */
2063 r_extern = 0;
2064 r_index = output_section->target_index;
2065 }
c188b0be 2066
7ed4093a
SC		 2067 /* now the fun stuff */
2068 if (abfd->xvec->header_byteorder_big_p != false) {
2768b3f7
SC		 2069 natptr->r_index[0] = r_index >> 16;
2070 natptr->r_index[1] = r_index >> 8;
2071 natptr->r_index[2] = r_index;
2072 natptr->r_type[0] =
c188b0be
DM		 2073 ((r_extern? RELOC_EXT_BITS_EXTERN_BIG: 0)
2074 | (r_type << RELOC_EXT_BITS_TYPE_SH_BIG));
2768b3f7
SC		 2075 } else {
2076 natptr->r_index[2] = r_index >> 16;
2077 natptr->r_index[1] = r_index >> 8;
2078 natptr->r_index[0] = r_index;
2079 natptr->r_type[0] =
2080 (r_extern? RELOC_EXT_BITS_EXTERN_LITTLE: 0)
2081 | (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE);
2082 }
7ed4093a
SC		 2083
2084 PUT_WORD (abfd, r_addend, natptr->r_addend);
2085}
2086
6db82ea7
SC		 2087/* BFD deals internally with all things based from the section they're
2088 in. so, something in 10 bytes into a text section with a base of
c188b0be 2089 50 would have a symbol (.text+10) and know .text vma was 50.
6db82ea7
SC		 2090
2091 Aout keeps all it's symbols based from zero, so the symbol would
2092 contain 60. This macro subs the base of each section from the value
2093 to give the true offset from the section */
2094
2095
7ed4093a
SC		 2096#define MOVE_ADDRESS(ad) \
2097 if (r_extern) { \
6db82ea7
SC		 2098 /* undefined symbol */ \
2099 cache_ptr->sym_ptr_ptr = symbols + r_index; \
2100 cache_ptr->addend = ad; \
2101 } else { \
2102 /* defined, section relative. replace symbol with pointer to \
2103 symbol which points to section */ \
7ed4093a
SC		 2104 switch (r_index) { \
2105 case N_TEXT: \
2106 case N_TEXT | N_EXT: \
6db82ea7 2107 cache_ptr->sym_ptr_ptr = obj_textsec(abfd)->symbol_ptr_ptr; \
7ed4093a
SC		 2108 cache_ptr->addend = ad - su->textsec->vma; \
2109 break; \
2110 case N_DATA: \
2111 case N_DATA | N_EXT: \
6db82ea7 2112 cache_ptr->sym_ptr_ptr = obj_datasec(abfd)->symbol_ptr_ptr; \
7ed4093a
SC		 2113 cache_ptr->addend = ad - su->datasec->vma; \
2114 break; \
2115 case N_BSS: \
2116 case N_BSS | N_EXT: \
6db82ea7 2117 cache_ptr->sym_ptr_ptr = obj_bsssec(abfd)->symbol_ptr_ptr; \
7ed4093a
SC		 2118 cache_ptr->addend = ad - su->bsssec->vma; \
2119 break; \
6db82ea7 2120 default: \
7ed4093a
SC		 2121 case N_ABS: \
2122 case N_ABS | N_EXT: \
4587b578 2123 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \
6db82ea7 2124 cache_ptr->addend = ad; \
7ed4093a
SC		 2125 break; \
2126 } \
2127 } \
2128
2129void
2f675427 2130NAME(aout,swap_ext_reloc_in) (abfd, bytes, cache_ptr, symbols, symcount)
8eb5d4be
JK		 2131 bfd *abfd;
2132 struct reloc_ext_external *bytes;
2133 arelent *cache_ptr;
2134 asymbol **symbols;
2f675427 2135 bfd_size_type symcount;
7ed4093a 2136{
ae115e51 2137 unsigned int r_index;
7ed4093a
SC		 2138 int r_extern;
2139 unsigned int r_type;
6db82ea7 2140 struct aoutdata *su = &(abfd->tdata.aout_data->a);
7ed4093a
SC		 2141
2142 cache_ptr->address = (GET_SWORD (abfd, bytes->r_address));
2143
2144 /* now the fun stuff */
2145 if (abfd->xvec->header_byteorder_big_p != false) {
382f2a3d
ILT		 2146 r_index = (bytes->r_index[0] << 16)
2147 | (bytes->r_index[1] << 8)
2148 | bytes->r_index[2];
7ed4093a
SC		 2149 r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG));
2150 r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
2151 >> RELOC_EXT_BITS_TYPE_SH_BIG;
2152 } else {
382f2a3d
ILT		 2153 r_index = (bytes->r_index[2] << 16)
2154 | (bytes->r_index[1] << 8)
2155 | bytes->r_index[0];
7ed4093a
SC		 2156 r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE));
2157 r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
2158 >> RELOC_EXT_BITS_TYPE_SH_LITTLE;
2159 }
2160
2f675427
ILT		 2161 cache_ptr->howto = howto_table_ext + r_type;
2162
2163 /* Base relative relocs are always against the symbol table,
2164 regardless of the setting of r_extern. r_extern just reflects
2165 whether the symbol the reloc is against is local or global. */
2166 if (r_type == RELOC_BASE10
2167 || r_type == RELOC_BASE13
2168 || r_type == RELOC_BASE22)
2169 r_extern = 1;
2170
2171 if (r_extern && r_index > symcount)
773033d2
ILT		 2172 {
2173 /* We could arrange to return an error, but it might be useful
2174 to see the file even if it is bad. */
2175 r_extern = 0;
2176 r_index = N_ABS;
2177 }
2178
6db82ea7 2179 MOVE_ADDRESS(GET_SWORD(abfd, bytes->r_addend));
7ed4093a
SC		 2180}
2181
2182void
2f675427 2183NAME(aout,swap_std_reloc_in) (abfd, bytes, cache_ptr, symbols, symcount)
8eb5d4be
JK		 2184 bfd *abfd;
2185 struct reloc_std_external *bytes;
2186 arelent *cache_ptr;
2187 asymbol **symbols;
2f675427 2188 bfd_size_type symcount;
7ed4093a 2189{
ae115e51 2190 unsigned int r_index;
7ed4093a
SC		 2191 int r_extern;
2192 unsigned int r_length;
2193 int r_pcrel;
2194 int r_baserel, r_jmptable, r_relative;
6db82ea7 2195 struct aoutdata *su = &(abfd->tdata.aout_data->a);
ae115e51 2196 unsigned int howto_idx;
7ed4093a 2197
34dd8ba3 2198 cache_ptr->address = bfd_h_get_32 (abfd, bytes->r_address);
7ed4093a
SC		 2199
2200 /* now the fun stuff */
2201 if (abfd->xvec->header_byteorder_big_p != false) {
382f2a3d
ILT		 2202 r_index = (bytes->r_index[0] << 16)
2203 | (bytes->r_index[1] << 8)
2204 | bytes->r_index[2];
7ed4093a
SC		 2205 r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
2206 r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
2207 r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_BIG));
2208 r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG));
2209 r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG));
c188b0be 2210 r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_BIG)
7ed4093a
SC		 2211 >> RELOC_STD_BITS_LENGTH_SH_BIG;
2212 } else {
382f2a3d
ILT		 2213 r_index = (bytes->r_index[2] << 16)
2214 | (bytes->r_index[1] << 8)
2215 | bytes->r_index[0];
7ed4093a
SC		 2216 r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
2217 r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
2218 r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE));
2219 r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE));
2220 r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE));
c188b0be 2221 r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE)
7ed4093a
SC		 2222 >> RELOC_STD_BITS_LENGTH_SH_LITTLE;
2223 }
2224
cb9461ff
JK		 2225 howto_idx = r_length + 4 * r_pcrel + 8 * r_baserel
2226 + 16 * r_jmptable + 32 * r_relative;
c188b0be
DM		 2227 BFD_ASSERT (howto_idx < TABLE_SIZE (howto_table_std));
2228 cache_ptr->howto = howto_table_std + howto_idx;
ae115e51 2229 BFD_ASSERT (cache_ptr->howto->type != (unsigned int) -1);
7ed4093a 2230
2f675427
ILT		 2231 /* Base relative relocs are always against the symbol table,
2232 regardless of the setting of r_extern. r_extern just reflects
2233 whether the symbol the reloc is against is local or global. */
2234 if (r_baserel)
2235 r_extern = 1;
2236
2237 if (r_extern && r_index > symcount)
773033d2
ILT		 2238 {
2239 /* We could arrange to return an error, but it might be useful
2240 to see the file even if it is bad. */
2241 r_extern = 0;
2242 r_index = N_ABS;
2243 }
2244
7ed4093a
SC		 2245 MOVE_ADDRESS(0);
2246}
2247
5c8444f8 2248/* Read and swap the relocs for a section. */
7ed4093a
SC		 2249
2250boolean
8eb5d4be
JK		 2251NAME(aout,slurp_reloc_table) (abfd, asect, symbols)
2252 bfd *abfd;
2253 sec_ptr asect;
2254 asymbol **symbols;
7ed4093a
SC		 2255{
2256 unsigned int count;
2257 bfd_size_type reloc_size;
2258 PTR relocs;
2259 arelent *reloc_cache;
2260 size_t each_size;
0ee75d02
ILT		 2261 unsigned int counter = 0;
2262 arelent *cache_ptr;
7ed4093a 2263
5c8444f8
ILT		 2264 if (asect->relocation)
2265 return true;
7ed4093a 2266
5c8444f8
ILT		 2267 if (asect->flags & SEC_CONSTRUCTOR)
2268 return true;
7ed4093a 2269
0ee75d02 2270 if (asect == obj_datasec (abfd))
7ed4093a 2271 reloc_size = exec_hdr(abfd)->a_drsize;
0ee75d02 2272 else if (asect == obj_textsec (abfd))
7ed4093a 2273 reloc_size = exec_hdr(abfd)->a_trsize;
f42fe159
ILT		 2274 else if (asect == obj_bsssec (abfd))
2275 reloc_size = 0;
0ee75d02
ILT		 2276 else
2277 {
68241b2b 2278 bfd_set_error (bfd_error_invalid_operation);
0ee75d02
ILT		 2279 return false;
2280 }
2281
5c8444f8
ILT		 2282 if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0)
2283 return false;
2284
7ed4093a
SC		 2285 each_size = obj_reloc_entry_size (abfd);
2286
2287 count = reloc_size / each_size;
2288
58142f10 2289 reloc_cache = (arelent *) bfd_malloc ((size_t) (count * sizeof (arelent)));
5c8444f8 2290 if (reloc_cache == NULL && count != 0)
58142f10 2291 return false;
fa77c704 2292 memset (reloc_cache, 0, count * sizeof (arelent));
7ed4093a 2293
58142f10 2294 relocs = bfd_malloc ((size_t) reloc_size);
5c8444f8 2295 if (relocs == NULL && reloc_size != 0)
0ee75d02 2296 {
5c8444f8 2297 free (reloc_cache);
5c8444f8 2298 return false;
0ee75d02 2299 }
7ed4093a 2300
0ee75d02
ILT		 2301 if (bfd_read (relocs, 1, reloc_size, abfd) != reloc_size)
2302 {
5c8444f8
ILT		 2303 free (relocs);
2304 free (reloc_cache);
0ee75d02
ILT		 2305 return false;
2306 }
7ed4093a 2307
0ee75d02
ILT		 2308 cache_ptr = reloc_cache;
2309 if (each_size == RELOC_EXT_SIZE)
2310 {
2311 register struct reloc_ext_external *rptr =
2312 (struct reloc_ext_external *) relocs;
7ed4093a 2313
0ee75d02 2314 for (; counter < count; counter++, rptr++, cache_ptr++)
2f675427
ILT		 2315 NAME(aout,swap_ext_reloc_in) (abfd, rptr, cache_ptr, symbols,
2316 bfd_get_symcount (abfd));
7ed4093a 2317 }
0ee75d02
ILT		 2318 else
2319 {
5c8444f8
ILT		 2320 register struct reloc_std_external *rptr =
2321 (struct reloc_std_external *) relocs;
7ed4093a 2322
0ee75d02 2323 for (; counter < count; counter++, rptr++, cache_ptr++)
2f675427
ILT		 2324 MY_swap_std_reloc_in (abfd, rptr, cache_ptr, symbols,
2325 bfd_get_symcount (abfd));
7ed4093a
SC		 2326 }
2327
5c8444f8
ILT		 2328 free (relocs);
2329
7ed4093a 2330 asect->relocation = reloc_cache;
0ee75d02 2331 asect->reloc_count = cache_ptr - reloc_cache;
5c8444f8 2332
7ed4093a
SC		 2333 return true;
2334}
2335
7ed4093a
SC		 2336/* Write out a relocation section into an object file. */
2337
2338boolean
8eb5d4be
JK		 2339NAME(aout,squirt_out_relocs) (abfd, section)
2340 bfd *abfd;
2341 asection *section;
7ed4093a
SC		 2342{
2343 arelent **generic;
2344 unsigned char *native, *natptr;
2345 size_t each_size;
2346
2347 unsigned int count = section->reloc_count;
2348 size_t natsize;
2349
2350 if (count == 0) return true;
2351
2352 each_size = obj_reloc_entry_size (abfd);
2353 natsize = each_size * count;
2354 native = (unsigned char *) bfd_zalloc (abfd, natsize);
a9713b91 2355 if (!native)
7ed4093a 2356 return false;
7ed4093a
SC		 2357
2358 generic = section->orelocation;
2359
c188b0be 2360 if (each_size == RELOC_EXT_SIZE)
7ed4093a
SC		 2361 {
2362 for (natptr = native;
2363 count != 0;
2364 --count, natptr += each_size, ++generic)
2365 NAME(aout,swap_ext_reloc_out) (abfd, *generic, (struct reloc_ext_external *)natptr);
2366 }
c188b0be 2367 else
7ed4093a
SC		 2368 {
2369 for (natptr = native;
2370 count != 0;
2371 --count, natptr += each_size, ++generic)
f42fe159 2372 MY_swap_std_reloc_out(abfd, *generic, (struct reloc_std_external *)natptr);
7ed4093a
SC		 2373 }
2374
2375 if ( bfd_write ((PTR) native, 1, natsize, abfd) != natsize) {
2376 bfd_release(abfd, native);
2377 return false;
2378 }
2379 bfd_release (abfd, native);
2380
2381 return true;
2382}
2383
2384/* This is stupid. This function should be a boolean predicate */
326e32d7 2385long
8eb5d4be
JK		 2386NAME(aout,canonicalize_reloc) (abfd, section, relptr, symbols)
2387 bfd *abfd;
2388 sec_ptr section;
2389 arelent **relptr;
2390 asymbol **symbols;
7ed4093a
SC		 2391{
2392 arelent *tblptr = section->relocation;
2393 unsigned int count;
2394
4f019d04
ILT		 2395 if (section == obj_bsssec (abfd))
2396 {
2397 *relptr = NULL;
2398 return 0;
2399 }
2400
7ed4093a 2401 if (!(tblptr || NAME(aout,slurp_reloc_table)(abfd, section, symbols)))
326e32d7 2402 return -1;
7ed4093a
SC		 2403
2404 if (section->flags & SEC_CONSTRUCTOR) {
2405 arelent_chain *chain = section->constructor_chain;
2406 for (count = 0; count < section->reloc_count; count ++) {
2407 *relptr ++ = &chain->relent;
2408 chain = chain->next;
2409 }
2410 }
2411 else {
2412 tblptr = section->relocation;
7ed4093a 2413
c188b0be 2414 for (count = 0; count++ < section->reloc_count;)
7ed4093a
SC		 2415 {
2416 *relptr++ = tblptr++;
2417 }
2418 }
2419 *relptr = 0;
2420
2421 return section->reloc_count;
2422}
2423
326e32d7 2424long
8eb5d4be
JK		 2425NAME(aout,get_reloc_upper_bound) (abfd, asect)
2426 bfd *abfd;
2427 sec_ptr asect;
7ed4093a
SC		 2428{
2429 if (bfd_get_format (abfd) != bfd_object) {
68241b2b 2430 bfd_set_error (bfd_error_invalid_operation);
326e32d7 2431 return -1;
7ed4093a
SC		 2432 }
2433 if (asect->flags & SEC_CONSTRUCTOR) {
2434 return (sizeof (arelent *) * (asect->reloc_count+1));
2435 }
2436
7ed4093a 2437 if (asect == obj_datasec (abfd))
fa77c704
ILT		 2438 return (sizeof (arelent *)
2439 * ((exec_hdr(abfd)->a_drsize / obj_reloc_entry_size (abfd))
2440 + 1));
7ed4093a
SC		 2441
2442 if (asect == obj_textsec (abfd))
fa77c704
ILT		 2443 return (sizeof (arelent *)
2444 * ((exec_hdr(abfd)->a_trsize / obj_reloc_entry_size (abfd))
2445 + 1));
7ed4093a 2446
4f019d04
ILT		 2447 if (asect == obj_bsssec (abfd))
2448 return sizeof (arelent *);
2449
f42fe159
ILT		 2450 if (asect == obj_bsssec (abfd))
2451 return 0;
2452
68241b2b 2453 bfd_set_error (bfd_error_invalid_operation);
326e32d7 2454 return -1;
7ed4093a
SC		 2455}
2456
2457\f
326e32d7 2458long
8eb5d4be
JK		 2459NAME(aout,get_symtab_upper_bound) (abfd)
2460 bfd *abfd;
7ed4093a 2461{
326e32d7
ILT		 2462 if (!NAME(aout,slurp_symbol_table)(abfd))
2463 return -1;
7ed4093a
SC		 2464
2465 return (bfd_get_symcount (abfd)+1) * (sizeof (aout_symbol_type *));
2466}
728472f1
ILT		 2467
2468/*ARGSUSED*/
7ed4093a 2469 alent *
8eb5d4be
JK		 2470NAME(aout,get_lineno) (ignore_abfd, ignore_symbol)
2471 bfd *ignore_abfd;
2472 asymbol *ignore_symbol;
7ed4093a
SC		 2473{
2474return (alent *)NULL;
2475}
2476
728472f1 2477/*ARGSUSED*/
c188b0be 2478void
8eb5d4be
JK		 2479NAME(aout,get_symbol_info) (ignore_abfd, symbol, ret)
2480 bfd *ignore_abfd;
2481 asymbol *symbol;
2482 symbol_info *ret;
34dd8ba3
JG		 2483{
2484 bfd_symbol_info (symbol, ret);
2485
2486 if (ret->type == '?')
2487 {
2488 int type_code = aout_symbol(symbol)->type & 0xff;
2489 CONST char *stab_name = aout_stab_name(type_code);
2490 static char buf[10];
2491
2492 if (stab_name == NULL)
2493 {
2494 sprintf(buf, "(%d)", type_code);
2495 stab_name = buf;
2496 }
2497 ret->type = '-';
2498 ret->stab_other = (unsigned)(aout_symbol(symbol)->other & 0xff);
2499 ret->stab_desc = (unsigned)(aout_symbol(symbol)->desc & 0xffff);
2500 ret->stab_name = stab_name;
2501 }
2502}
7ed4093a 2503
728472f1 2504/*ARGSUSED*/
c188b0be 2505void
8eb5d4be
JK		 2506NAME(aout,print_symbol) (ignore_abfd, afile, symbol, how)
2507 bfd *ignore_abfd;
2508 PTR afile;
2509 asymbol *symbol;
2510 bfd_print_symbol_type how;
7ed4093a
SC		 2511{
2512 FILE *file = (FILE *)afile;
2513
2514 switch (how) {
9e2dad8e 2515 case bfd_print_symbol_name:
fb3be09b
JG		 2516 if (symbol->name)
2517 fprintf(file,"%s", symbol->name);
7ed4093a 2518 break;
9e2dad8e 2519 case bfd_print_symbol_more:
7ed4093a
SC		 2520 fprintf(file,"%4x %2x %2x",(unsigned)(aout_symbol(symbol)->desc & 0xffff),
2521 (unsigned)(aout_symbol(symbol)->other & 0xff),
2522 (unsigned)(aout_symbol(symbol)->type));
2523 break;
9e2dad8e 2524 case bfd_print_symbol_all:
7ed4093a 2525 {
6db82ea7
SC		 2526 CONST char *section_name = symbol->section->name;
2527
7ed4093a
SC		 2528
2529 bfd_print_symbol_vandf((PTR)file,symbol);
2530
fb3be09b 2531 fprintf(file," %-5s %04x %02x %02x",
7ed4093a
SC		 2532 section_name,
2533 (unsigned)(aout_symbol(symbol)->desc & 0xffff),
2534 (unsigned)(aout_symbol(symbol)->other & 0xff),
9e2dad8e 2535 (unsigned)(aout_symbol(symbol)->type & 0xff));
fb3be09b
JG		 2536 if (symbol->name)
2537 fprintf(file," %s", symbol->name);
7ed4093a
SC		 2538 }
2539 break;
2540 }
2541}
2542
c3246d9b
ILT		 2543/* If we don't have to allocate more than 1MB to hold the generic
2544 symbols, we use the generic minisymbol methord: it's faster, since
2545 it only translates the symbols once, not multiple times. */
2546#define MINISYM_THRESHOLD (1000000 / sizeof (asymbol))
2547
2548/* Read minisymbols. For minisymbols, we use the unmodified a.out
2549 symbols. The minisymbol_to_symbol function translates these into
2550 BFD asymbol structures. */
2551
2552long
2553NAME(aout,read_minisymbols) (abfd, dynamic, minisymsp, sizep)
2554 bfd *abfd;
2555 boolean dynamic;
2556 PTR *minisymsp;
2557 unsigned int *sizep;
2558{
2559 if (dynamic)
2560 {
2561 /* We could handle the dynamic symbols here as well, but it's
2562 easier to hand them off. */
2563 return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep);
2564 }
2565
2566 if (! aout_get_external_symbols (abfd))
2567 return -1;
2568
2569 if (obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD)
2570 return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep);
2571
2572 *minisymsp = (PTR) obj_aout_external_syms (abfd);
2573
2574 /* By passing the external symbols back from this routine, we are
2575 giving up control over the memory block. Clear
2576 obj_aout_external_syms, so that we do not try to free it
2577 ourselves. */
2578 obj_aout_external_syms (abfd) = NULL;
2579
2580 *sizep = EXTERNAL_NLIST_SIZE;
2581 return obj_aout_external_sym_count (abfd);
2582}
2583
2584/* Convert a minisymbol to a BFD asymbol. A minisymbol is just an
2585 unmodified a.out symbol. The SYM argument is a structure returned
2586 by bfd_make_empty_symbol, which we fill in here. */
2587
2588asymbol *
2589NAME(aout,minisymbol_to_symbol) (abfd, dynamic, minisym, sym)
2590 bfd *abfd;
2591 boolean dynamic;
2592 const PTR minisym;
2593 asymbol *sym;
2594{
2595 if (dynamic
2596 || obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD)
2597 return _bfd_generic_minisymbol_to_symbol (abfd, dynamic, minisym, sym);
2598
2599 memset (sym, 0, sizeof (aout_symbol_type));
2600
2601 /* We call translate_symbol_table to translate a single symbol. */
2602 if (! (NAME(aout,translate_symbol_table)
2603 (abfd,
2604 (aout_symbol_type *) sym,
2605 (struct external_nlist *) minisym,
2606 (bfd_size_type) 1,
2607 obj_aout_external_strings (abfd),
2608 obj_aout_external_string_size (abfd),
2609 false)))
2610 return NULL;
2611
2612 return sym;
2613}
2614
c188b0be 2615/*
6724ff46 2616 provided a BFD, a section and an offset into the section, calculate
7ed4093a
SC		 2617 and return the name of the source file and the line nearest to the
2618 wanted location.
2619*/
c188b0be 2620
7ed4093a 2621boolean
8eb5d4be
JK		 2622NAME(aout,find_nearest_line)
2623 (abfd, section, symbols, offset, filename_ptr, functionname_ptr, line_ptr)
2624 bfd *abfd;
2625 asection *section;
2626 asymbol **symbols;
2627 bfd_vma offset;
2628 CONST char **filename_ptr;
2629 CONST char **functionname_ptr;
2630 unsigned int *line_ptr;
7ed4093a
SC		 2631{
2632 /* Run down the file looking for the filename, function and linenumber */
2633 asymbol **p;
6db82ea7
SC		 2634 CONST char *directory_name = NULL;
2635 CONST char *main_file_name = NULL;
2636 CONST char *current_file_name = NULL;
2637 CONST char *line_file_name = NULL; /* Value of current_file_name at line number. */
ae115e51 2638 bfd_vma low_line_vma = 0;
7ed4093a
SC		 2639 bfd_vma low_func_vma = 0;
2640 asymbol *func = 0;
f1c6dd5d
ILT		 2641 size_t filelen, funclen;
2642 char *buf;
2643
7ed4093a
SC		 2644 *filename_ptr = abfd->filename;
2645 *functionname_ptr = 0;
2646 *line_ptr = 0;
2647 if (symbols != (asymbol **)NULL) {
2648 for (p = symbols; *p; p++) {
2649 aout_symbol_type *q = (aout_symbol_type *)(*p);
98d43107 2650 next:
7ed4093a
SC		 2651 switch (q->type){
2652 case N_SO:
3f7607af 2653 main_file_name = current_file_name = q->symbol.name;
98d43107
JG		 2654 /* Look ahead to next symbol to check if that too is an N_SO. */
2655 p++;
2656 if (*p == NULL)
2657 break;
2658 q = (aout_symbol_type *)(*p);
6db82ea7 2659 if (q->type != (int)N_SO)
98d43107
JG		 2660 goto next;
2661
2662 /* Found a second N_SO First is directory; second is filename. */
3f7607af
PB		 2663 directory_name = current_file_name;
2664 main_file_name = current_file_name = q->symbol.name;
2665 if (obj_textsec(abfd) != section)
2666 goto done;
2667 break;
2668 case N_SOL:
2669 current_file_name = q->symbol.name;
7ed4093a 2670 break;
3f7607af 2671
7ed4093a
SC		 2672 case N_SLINE:
2673
2674 case N_DSLINE:
2675 case N_BSLINE:
ae115e51
ILT		 2676 /* We'll keep this if it resolves nearer than the one we have
2677 already. */
2678 if (q->symbol.value >= low_line_vma
2679 && q->symbol.value <= offset)
2680 {
2681 *line_ptr = q->desc;
2682 low_line_vma = q->symbol.value;
2683 line_file_name = current_file_name;
2684 }
7ed4093a
SC		 2685 break;
2686 case N_FUN:
2687 {
2688 /* We'll keep this if it is nearer than the one we have already */
2689 if (q->symbol.value >= low_func_vma &&
2690 q->symbol.value <= offset) {
2691 low_func_vma = q->symbol.value;
2692 func = (asymbol *)q;
2693 }
ae115e51 2694 else if (q->symbol.value > offset)
3f7607af 2695 goto done;
7ed4093a
SC		 2696 }
2697 break;
2698 }
2699 }
2700 }
3f7607af
PB		 2701
2702 done:
f1c6dd5d 2703 if (*line_ptr != 0)
3f7607af 2704 main_file_name = line_file_name;
f1c6dd5d
ILT		 2705
2706 if (main_file_name == NULL
2707 || main_file_name[0] == '/'
2708 || directory_name == NULL)
2709 filelen = 0;
2710 else
2711 filelen = strlen (directory_name) + strlen (main_file_name);
2712 if (func == NULL)
2713 funclen = 0;
2714 else
2715 funclen = strlen (bfd_asymbol_name (func));
2716
2717 if (adata (abfd).line_buf != NULL)
2718 free (adata (abfd).line_buf);
2719 if (filelen + funclen == 0)
2720 adata (abfd).line_buf = buf = NULL;
2721 else
2722 {
58142f10
ILT		 2723 buf = (char *) bfd_malloc (filelen + funclen + 2);
2724 adata (abfd).line_buf = buf;
2725 if (buf == NULL)
2726 return false;
f1c6dd5d
ILT		 2727 }
2728
2729 if (main_file_name != NULL)
2730 {
3f7607af 2731 if (main_file_name[0] == '/' || directory_name == NULL)
f1c6dd5d
ILT		 2732 *filename_ptr = main_file_name;
2733 else
2734 {
2735 sprintf (buf, "%s%s", directory_name, main_file_name);
2736 *filename_ptr = buf;
2737 buf += filelen + 1;
2738 }
2739 }
2740
ae115e51
ILT		 2741 if (func)
2742 {
f1c6dd5d 2743 const char *function = func->name;
ae115e51
ILT		 2744 char *p;
2745
2746 /* The caller expects a symbol name. We actually have a
2747 function name, without the leading underscore. Put the
2748 underscore back in, so that the caller gets a symbol name. */
2749 if (bfd_get_symbol_leading_char (abfd) == '\0')
f1c6dd5d 2750 strcpy (buf, function);
ae115e51
ILT		 2751 else
2752 {
f1c6dd5d
ILT		 2753 buf[0] = bfd_get_symbol_leading_char (abfd);
2754 strcpy (buf + 1, function);
ae115e51 2755 }
ae115e51 2756 /* Have to remove : stuff */
f1c6dd5d 2757 p = strchr (buf, ':');
ae115e51
ILT		 2758 if (p != NULL)
2759 *p = '\0';
f1c6dd5d 2760 *functionname_ptr = buf;
ae115e51 2761 }
f1c6dd5d 2762
7ed4093a 2763 return true;
7ed4093a
SC		 2764}
2765
728472f1 2766/*ARGSUSED*/
c188b0be 2767int
8eb5d4be
JK		 2768NAME(aout,sizeof_headers) (abfd, execable)
2769 bfd *abfd;
2770 boolean execable;
7ed4093a 2771{
6db82ea7 2772 return adata(abfd).exec_bytes_size;
7ed4093a 2773}
5c8444f8
ILT		 2774
2775/* Free all information we have cached for this BFD. We can always
2776 read it again later if we need it. */
2777
2778boolean
2779NAME(aout,bfd_free_cached_info) (abfd)
2780 bfd *abfd;
2781{
2782 asection *o;
2783
c4dd531f
ILT		 2784 if (bfd_get_format (abfd) != bfd_object)
2785 return true;
2786
4852416e
DHW		 2787#define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; }
2788 BFCI_FREE (obj_aout_symbols (abfd));
7ac84736 2789#ifdef USE_MMAP
4fe6d901
KR		 2790 obj_aout_external_syms (abfd) = 0;
2791 bfd_free_window (&obj_aout_sym_window (abfd));
2792 bfd_free_window (&obj_aout_string_window (abfd));
2793 obj_aout_external_strings (abfd) = 0;
7ac84736
KR		 2794#else
2795 BFCI_FREE (obj_aout_external_syms (abfd));
2796 BFCI_FREE (obj_aout_external_strings (abfd));
2797#endif
5c8444f8 2798 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
4852416e
DHW		 2799 BFCI_FREE (o->relocation);
2800#undef BFCI_FREE
5c8444f8
ILT		 2801
2802 return true;
2803}
4c3721d5
ILT		 2804\f
2805/* a.out link code. */
2806
4c3721d5
ILT		 2807static boolean aout_link_add_object_symbols
2808 PARAMS ((bfd *, struct bfd_link_info *));
2809static boolean aout_link_check_archive_element
2810 PARAMS ((bfd *, struct bfd_link_info *, boolean *));
4c3721d5
ILT		 2811static boolean aout_link_free_symbols PARAMS ((bfd *));
2812static boolean aout_link_check_ar_symbols
2813 PARAMS ((bfd *, struct bfd_link_info *, boolean *pneeded));
2814static boolean aout_link_add_symbols
2815 PARAMS ((bfd *, struct bfd_link_info *));
2816
2817/* Routine to create an entry in an a.out link hash table. */
2818
e85e8bfe
ILT		 2819struct bfd_hash_entry *
2820NAME(aout,link_hash_newfunc) (entry, table, string)
4c3721d5
ILT		 2821 struct bfd_hash_entry *entry;
2822 struct bfd_hash_table *table;
2823 const char *string;
2824{
2825 struct aout_link_hash_entry *ret = (struct aout_link_hash_entry *) entry;
2826
2827 /* Allocate the structure if it has not already been allocated by a
2828 subclass. */
2829 if (ret == (struct aout_link_hash_entry *) NULL)
2830 ret = ((struct aout_link_hash_entry *)
2831 bfd_hash_allocate (table, sizeof (struct aout_link_hash_entry)));
9783e04a 2832 if (ret == (struct aout_link_hash_entry *) NULL)
a9713b91 2833 return (struct bfd_hash_entry *) ret;
4c3721d5
ILT		 2834
2835 /* Call the allocation method of the superclass. */
2836 ret = ((struct aout_link_hash_entry *)
2837 _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2838 table, string));
9783e04a 2839 if (ret)
35fee729
ILT		 2840 {
2841 /* Set local fields. */
2842 ret->written = false;
2843 ret->indx = -1;
2844 }
4c3721d5
ILT		 2845
2846 return (struct bfd_hash_entry *) ret;
2847}
2848
e85e8bfe
ILT		 2849/* Initialize an a.out link hash table. */
2850
2851boolean
2852NAME(aout,link_hash_table_init) (table, abfd, newfunc)
2853 struct aout_link_hash_table *table;
2854 bfd *abfd;
2855 struct bfd_hash_entry *(*newfunc) PARAMS ((struct bfd_hash_entry *,
2856 struct bfd_hash_table *,
2857 const char *));
2858{
2859 return _bfd_link_hash_table_init (&table->root, abfd, newfunc);
2860}
2861
4c3721d5
ILT		 2862/* Create an a.out link hash table. */
2863
2864struct bfd_link_hash_table *
2865NAME(aout,link_hash_table_create) (abfd)
2866 bfd *abfd;
2867{
2868 struct aout_link_hash_table *ret;
2869
2870 ret = ((struct aout_link_hash_table *)
c3246d9b
ILT		 2871 bfd_alloc (abfd, sizeof (struct aout_link_hash_table)));
2872 if (ret == NULL)
a9713b91 2873 return (struct bfd_link_hash_table *) NULL;
e85e8bfe
ILT		 2874 if (! NAME(aout,link_hash_table_init) (ret, abfd,
2875 NAME(aout,link_hash_newfunc)))
4c3721d5
ILT		 2876 {
2877 free (ret);
2878 return (struct bfd_link_hash_table *) NULL;
2879 }
2880 return &ret->root;
2881}
2882
4c3721d5
ILT		 2883/* Given an a.out BFD, add symbols to the global hash table as
2884 appropriate. */
2885
2886boolean
2887NAME(aout,link_add_symbols) (abfd, info)
2888 bfd *abfd;
2889 struct bfd_link_info *info;
2890{
2891 switch (bfd_get_format (abfd))
2892 {
2893 case bfd_object:
2894 return aout_link_add_object_symbols (abfd, info);
2895 case bfd_archive:
2896 return _bfd_generic_link_add_archive_symbols
2897 (abfd, info, aout_link_check_archive_element);
2898 default:
68241b2b 2899 bfd_set_error (bfd_error_wrong_format);
4c3721d5
ILT		 2900 return false;
2901 }
2902}
2903
2904/* Add symbols from an a.out object file. */
2905
2906static boolean
2907aout_link_add_object_symbols (abfd, info)
2908 bfd *abfd;
2909 struct bfd_link_info *info;
2910{
5c8444f8 2911 if (! aout_get_external_symbols (abfd))
4c3721d5
ILT		 2912 return false;
2913 if (! aout_link_add_symbols (abfd, info))
2914 return false;
2915 if (! info->keep_memory)
2916 {
2917 if (! aout_link_free_symbols (abfd))
2918 return false;
2919 }
2920 return true;
2921}
2922
2923/* Check a single archive element to see if we need to include it in
2924 the link. *PNEEDED is set according to whether this element is
2925 needed in the link or not. This is called from
2926 _bfd_generic_link_add_archive_symbols. */
2927
2928static boolean
2929aout_link_check_archive_element (abfd, info, pneeded)
2930 bfd *abfd;
2931 struct bfd_link_info *info;
2932 boolean *pneeded;
2933{
5c8444f8 2934 if (! aout_get_external_symbols (abfd))
4c3721d5
ILT		 2935 return false;
2936
2937 if (! aout_link_check_ar_symbols (abfd, info, pneeded))
2938 return false;
2939
2940 if (*pneeded)
2941 {
2942 if (! aout_link_add_symbols (abfd, info))
2943 return false;
2944 }
2945
1afd2380 2946 if (! info->keep_memory || ! *pneeded)
4c3721d5
ILT		 2947 {
2948 if (! aout_link_free_symbols (abfd))
2949 return false;
2950 }
2951
2952 return true;
2953}
2954
4c3721d5
ILT		 2955/* Free up the internal symbols read from an a.out file. */
2956
2957static boolean
2958aout_link_free_symbols (abfd)
2959 bfd *abfd;
2960{
2961 if (obj_aout_external_syms (abfd) != (struct external_nlist *) NULL)
2962 {
7ac84736 2963#ifdef USE_MMAP
4fe6d901 2964 bfd_free_window (&obj_aout_sym_window (abfd));
7ac84736
KR		 2965#else
2966 free ((PTR) obj_aout_external_syms (abfd));
2967#endif
4c3721d5
ILT		 2968 obj_aout_external_syms (abfd) = (struct external_nlist *) NULL;
2969 }
2970 if (obj_aout_external_strings (abfd) != (char *) NULL)
2971 {
7ac84736 2972#ifdef USE_MMAP
4fe6d901 2973 bfd_free_window (&obj_aout_string_window (abfd));
7ac84736
KR		 2974#else
2975 free ((PTR) obj_aout_external_strings (abfd));
2976#endif
4c3721d5
ILT		 2977 obj_aout_external_strings (abfd) = (char *) NULL;
2978 }
2979 return true;
2980}
2981
2982/* Look through the internal symbols to see if this object file should
2983 be included in the link. We should include this object file if it
2984 defines any symbols which are currently undefined. If this object
2985 file defines a common symbol, then we may adjust the size of the
2986 known symbol but we do not include the object file in the link
2987 (unless there is some other reason to include it). */
2988
2989static boolean
2990aout_link_check_ar_symbols (abfd, info, pneeded)
2991 bfd *abfd;
2992 struct bfd_link_info *info;
2993 boolean *pneeded;
2994{
2995 register struct external_nlist *p;
2996 struct external_nlist *pend;
2997 char *strings;
2998
2999 *pneeded = false;
3000
3001 /* Look through all the symbols. */
3002 p = obj_aout_external_syms (abfd);
3003 pend = p + obj_aout_external_sym_count (abfd);
3004 strings = obj_aout_external_strings (abfd);
3005 for (; p < pend; p++)
3006 {
3007 int type = bfd_h_get_8 (abfd, p->e_type);
3008 const char *name;
3009 struct bfd_link_hash_entry *h;
3010
4298e311
ILT		 3011 /* Ignore symbols that are not externally visible. This is an
3012 optimization only, as we check the type more thoroughly
3013 below. */
4587b578
ILT		 3014 if (((type & N_EXT) == 0
3015 || (type & N_STAB) != 0
3016 || type == N_FN)
4298e311
ILT		 3017 && type != N_WEAKA
3018 && type != N_WEAKT
3019 && type != N_WEAKD
3020 && type != N_WEAKB)
9b39ed6b
ILT		 3021 {
3022 if (type == N_WARNING
3023 || type == N_INDR)
3024 ++p;
3025 continue;
3026 }
4c3721d5
ILT		 3027
3028 name = strings + GET_WORD (abfd, p->e_strx);
3029 h = bfd_link_hash_lookup (info->hash, name, false, false, true);
3030
3031 /* We are only interested in symbols that are currently
3032 undefined or common. */
3033 if (h == (struct bfd_link_hash_entry *) NULL
3034 || (h->type != bfd_link_hash_undefined
3035 && h->type != bfd_link_hash_common))
9b39ed6b
ILT		 3036 {
3037 if (type == (N_INDR | N_EXT))
3038 ++p;
3039 continue;
3040 }
4c3721d5 3041
9b39ed6b
ILT		 3042 if (type == (N_TEXT | N_EXT)
3043 || type == (N_DATA | N_EXT)
3044 || type == (N_BSS | N_EXT)
3045 || type == (N_ABS | N_EXT)
3046 || type == (N_INDR | N_EXT))
4c3721d5
ILT		 3047 {
3048 /* This object file defines this symbol. We must link it
3049 in. This is true regardless of whether the current
3050 definition of the symbol is undefined or common. If the
3051 current definition is common, we have a case in which we
3052 have already seen an object file including
3053 int a;
3054 and this object file from the archive includes
3055 int a = 5;
f88c9008
ILT		 3056 In such a case we must include this object file.
3057
3058 FIXME: The SunOS 4.1.3 linker will pull in the archive
3059 element if the symbol is defined in the .data section,
3060 but not if it is defined in the .text section. That
3061 seems a bit crazy to me, and I haven't implemented it.
3062 However, it might be correct. */
4c3721d5
ILT		 3063 if (! (*info->callbacks->add_archive_element) (info, abfd, name))
3064 return false;
3065 *pneeded = true;
3066 return true;
3067 }
3068
9b39ed6b 3069 if (type == (N_UNDF | N_EXT))
4c3721d5
ILT		 3070 {
3071 bfd_vma value;
3072
3073 value = GET_WORD (abfd, p->e_value);
3074 if (value != 0)
3075 {
3076 /* This symbol is common in the object from the archive
3077 file. */
3078 if (h->type == bfd_link_hash_undefined)
3079 {
3080 bfd *symbfd;
e1f99f60 3081 unsigned int power;
4c3721d5
ILT		 3082
3083 symbfd = h->u.undef.abfd;
3084 if (symbfd == (bfd *) NULL)
3085 {
3086 /* This symbol was created as undefined from
3087 outside BFD. We assume that we should link
3088 in the object file. This is done for the -u
3089 option in the linker. */
3090 if (! (*info->callbacks->add_archive_element) (info,
3091 abfd,
3092 name))
3093 return false;
3094 *pneeded = true;
3095 return true;
3096 }
3097 /* Turn the current link symbol into a common
3098 symbol. It is already on the undefs list. */
3099 h->type = bfd_link_hash_common;
773033d2
ILT		 3100 h->u.c.p = ((struct bfd_link_hash_common_entry *)
3101 bfd_hash_allocate (&info->hash->table,
3102 sizeof (struct bfd_link_hash_common_entry)));
3103 if (h->u.c.p == NULL)
3104 return false;
3105
4c3721d5 3106 h->u.c.size = value;
e1f99f60
ILT		 3107
3108 /* FIXME: This isn't quite right. The maximum
3109 alignment of a common symbol should be set by the
3110 architecture of the output file, not of the input
3111 file. */
3112 power = bfd_log2 (value);
3113 if (power > bfd_get_arch_info (abfd)->section_align_power)
3114 power = bfd_get_arch_info (abfd)->section_align_power;
773033d2 3115 h->u.c.p->alignment_power = power;
e1f99f60 3116
773033d2
ILT		 3117 h->u.c.p->section = bfd_make_section_old_way (symbfd,
3118 "COMMON");
4c3721d5
ILT		 3119 }
3120 else
3121 {
3122 /* Adjust the size of the common symbol if
3123 necessary. */
3124 if (value > h->u.c.size)
3125 h->u.c.size = value;
3126 }
3127 }
3128 }
4298e311
ILT		 3129
3130 if (type == N_WEAKA
3131 || type == N_WEAKT
3132 || type == N_WEAKD
3133 || type == N_WEAKB)
3134 {
3135 /* This symbol is weak but defined. We must pull it in if
3136 the current link symbol is undefined, but we don't want
3137 it if the current link symbol is common. */
3138 if (h->type == bfd_link_hash_undefined)
3139 {
3140 if (! (*info->callbacks->add_archive_element) (info, abfd, name))
3141 return false;
3142 *pneeded = true;
3143 return true;
3144 }
3145 }
4c3721d5
ILT		 3146 }
3147
3148 /* We do not need this object file. */
3149 return true;
3150}
3151
3152/* Add all symbols from an object file to the hash table. */
3153
3154static boolean
3155aout_link_add_symbols (abfd, info)
3156 bfd *abfd;
3157 struct bfd_link_info *info;
3158{
e85e8bfe
ILT		 3159 boolean (*add_one_symbol) PARAMS ((struct bfd_link_info *, bfd *,
3160 const char *, flagword, asection *,
3161 bfd_vma, const char *, boolean,
3162 boolean,
3163 struct bfd_link_hash_entry **));
396aaeb2 3164 struct external_nlist *syms;
4c3721d5
ILT		 3165 bfd_size_type sym_count;
3166 char *strings;
3167 boolean copy;
3168 struct aout_link_hash_entry **sym_hash;
3169 register struct external_nlist *p;
3170 struct external_nlist *pend;
3171
396aaeb2 3172 syms = obj_aout_external_syms (abfd);
4c3721d5
ILT		 3173 sym_count = obj_aout_external_sym_count (abfd);
3174 strings = obj_aout_external_strings (abfd);
3175 if (info->keep_memory)
3176 copy = false;
3177 else
3178 copy = true;
3179
396aaeb2
ILT		 3180 if ((abfd->flags & DYNAMIC) != 0
3181 && aout_backend_info (abfd)->add_dynamic_symbols != NULL)
3182 {
3183 if (! ((*aout_backend_info (abfd)->add_dynamic_symbols)
3184 (abfd, info, &syms, &sym_count, &strings)))
3185 return false;
3186 }
3187
4c3721d5
ILT		 3188 /* We keep a list of the linker hash table entries that correspond
3189 to particular symbols. We could just look them up in the hash
3190 table, but keeping the list is more efficient. Perhaps this
3191 should be conditional on info->keep_memory. */
3192 sym_hash = ((struct aout_link_hash_entry **)
3193 bfd_alloc (abfd,
3194 ((size_t) sym_count
3195 * sizeof (struct aout_link_hash_entry *))));
e85e8bfe 3196 if (sym_hash == NULL && sym_count != 0)
a9713b91 3197 return false;
4c3721d5
ILT		 3198 obj_aout_sym_hashes (abfd) = sym_hash;
3199
e85e8bfe
ILT		 3200 add_one_symbol = aout_backend_info (abfd)->add_one_symbol;
3201 if (add_one_symbol == NULL)
3202 add_one_symbol = _bfd_generic_link_add_one_symbol;
3203
396aaeb2 3204 p = syms;
4c3721d5
ILT		 3205 pend = p + sym_count;
3206 for (; p < pend; p++, sym_hash++)
3207 {
3208 int type;
3209 const char *name;
3210 bfd_vma value;
3211 asection *section;
3212 flagword flags;
3213 const char *string;
3214
3215 *sym_hash = NULL;
3216
3217 type = bfd_h_get_8 (abfd, p->e_type);
3218
3219 /* Ignore debugging symbols. */
3220 if ((type & N_STAB) != 0)
3221 continue;
3222
4c3721d5
ILT		 3223 name = strings + GET_WORD (abfd, p->e_strx);
3224 value = GET_WORD (abfd, p->e_value);
3225 flags = BSF_GLOBAL;
3226 string = NULL;
3227 switch (type)
3228 {
3229 default:
3230 abort ();
4298e311
ILT		 3231
3232 case N_UNDF:
3233 case N_ABS:
3234 case N_TEXT:
3235 case N_DATA:
3236 case N_BSS:
3237 case N_FN_SEQ:
3238 case N_COMM:
3239 case N_SETV:
3240 case N_FN:
3241 /* Ignore symbols that are not externally visible. */
3242 continue;
3243 case N_INDR:
3244 /* Ignore local indirect symbol. */
3245 ++p;
3246 ++sym_hash;
3247 continue;
3248
4c3721d5 3249 case N_UNDF | N_EXT:
4298e311
ILT		 3250 if (value == 0)
3251 {
4587b578 3252 section = bfd_und_section_ptr;
4298e311
ILT		 3253 flags = 0;
3254 }
4c3721d5 3255 else
4587b578 3256 section = bfd_com_section_ptr;
4c3721d5
ILT		 3257 break;
3258 case N_ABS | N_EXT:
4587b578 3259 section = bfd_abs_section_ptr;
4c3721d5
ILT		 3260 break;
3261 case N_TEXT | N_EXT:
3262 section = obj_textsec (abfd);
3263 value -= bfd_get_section_vma (abfd, section);
3264 break;
3265 case N_DATA | N_EXT:
2cd086e3
ILT		 3266 case N_SETV | N_EXT:
3267 /* Treat N_SETV symbols as N_DATA symbol; see comment in
3268 translate_from_native_sym_flags. */
4c3721d5
ILT		 3269 section = obj_datasec (abfd);
3270 value -= bfd_get_section_vma (abfd, section);
3271 break;
3272 case N_BSS | N_EXT:
3273 section = obj_bsssec (abfd);
3274 value -= bfd_get_section_vma (abfd, section);
3275 break;
3276 case N_INDR | N_EXT:
3277 /* An indirect symbol. The next symbol is the symbol
3278 which this one really is. */
3279 BFD_ASSERT (p + 1 < pend);
3280 ++p;
3281 string = strings + GET_WORD (abfd, p->e_strx);
4587b578 3282 section = bfd_ind_section_ptr;
4c3721d5
ILT		 3283 flags |= BSF_INDIRECT;
3284 break;
3285 case N_COMM | N_EXT:
4587b578 3286 section = bfd_com_section_ptr;
4c3721d5 3287 break;
964affdc 3288 case N_SETA: case N_SETA | N_EXT:
4587b578 3289 section = bfd_abs_section_ptr;
4c3721d5
ILT		 3290 flags |= BSF_CONSTRUCTOR;
3291 break;
964affdc 3292 case N_SETT: case N_SETT | N_EXT:
4c3721d5
ILT		 3293 section = obj_textsec (abfd);
3294 flags |= BSF_CONSTRUCTOR;
3295 value -= bfd_get_section_vma (abfd, section);
3296 break;
964affdc 3297 case N_SETD: case N_SETD | N_EXT:
4c3721d5
ILT		 3298 section = obj_datasec (abfd);
3299 flags |= BSF_CONSTRUCTOR;
3300 value -= bfd_get_section_vma (abfd, section);
3301 break;
964affdc 3302 case N_SETB: case N_SETB | N_EXT:
4c3721d5
ILT		 3303 section = obj_bsssec (abfd);
3304 flags |= BSF_CONSTRUCTOR;
3305 value -= bfd_get_section_vma (abfd, section);
3306 break;
3307 case N_WARNING:
3308 /* A warning symbol. The next symbol is the one to warn
3309 about. */
3310 BFD_ASSERT (p + 1 < pend);
3311 ++p;
3312 string = name;
3313 name = strings + GET_WORD (abfd, p->e_strx);
4587b578 3314 section = bfd_und_section_ptr;
4c3721d5
ILT		 3315 flags |= BSF_WARNING;
3316 break;
4298e311 3317 case N_WEAKU:
4587b578 3318 section = bfd_und_section_ptr;
4298e311
ILT		 3319 flags = BSF_WEAK;
3320 break;
3321 case N_WEAKA:
4587b578 3322 section = bfd_abs_section_ptr;
4298e311
ILT		 3323 flags = BSF_WEAK;
3324 break;
3325 case N_WEAKT:
3326 section = obj_textsec (abfd);
3327 value -= bfd_get_section_vma (abfd, section);
3328 flags = BSF_WEAK;
3329 break;
3330 case N_WEAKD:
3331 section = obj_datasec (abfd);
3332 value -= bfd_get_section_vma (abfd, section);
3333 flags = BSF_WEAK;
3334 break;
3335 case N_WEAKB:
3336 section = obj_bsssec (abfd);
3337 value -= bfd_get_section_vma (abfd, section);
3338 flags = BSF_WEAK;
3339 break;
4c3721d5
ILT		 3340 }
3341
e85e8bfe 3342 if (! ((*add_one_symbol)
e68de5d5 3343 (info, abfd, name, flags, section, value, string, copy, false,
ec099b4b 3344 (struct bfd_link_hash_entry **) sym_hash)))
4c3721d5 3345 return false;
53155af1 3346
e1f99f60
ILT		 3347 /* Restrict the maximum alignment of a common symbol based on
3348 the architecture, since a.out has no way to represent
3349 alignment requirements of a section in a .o file. FIXME:
3350 This isn't quite right: it should use the architecture of the
3351 output file, not the input files. */
3352 if ((*sym_hash)->root.type == bfd_link_hash_common
773033d2 3353 && ((*sym_hash)->root.u.c.p->alignment_power >
e1f99f60 3354 bfd_get_arch_info (abfd)->section_align_power))
773033d2 3355 (*sym_hash)->root.u.c.p->alignment_power =
e1f99f60
ILT		 3356 bfd_get_arch_info (abfd)->section_align_power;
3357
f4945271
ILT		 3358 /* If this is a set symbol, and we are not building sets, then
3359 it is possible for the hash entry to not have been set. In
3360 such a case, treat the symbol as not globally defined. */
3361 if ((*sym_hash)->root.type == bfd_link_hash_new)
3362 {
3363 BFD_ASSERT ((flags & BSF_CONSTRUCTOR) != 0);
3364 *sym_hash = NULL;
3365 }
3366
53155af1
ILT		 3367 if (type == (N_INDR | N_EXT) || type == N_WARNING)
3368 ++sym_hash;
4c3721d5
ILT		 3369 }
3370
3371 return true;
3372}
14dc2f77
ILT		 3373\f
3374/* A hash table used for header files with N_BINCL entries. */
3375
3376struct aout_link_includes_table
3377{
3378 struct bfd_hash_table root;
3379};
3380
3381/* A linked list of totals that we have found for a particular header
3382 file. */
3383
3384struct aout_link_includes_totals
3385{
3386 struct aout_link_includes_totals *next;
3387 bfd_vma total;
3388};
3389
3390/* An entry in the header file hash table. */
3391
3392struct aout_link_includes_entry
3393{
3394 struct bfd_hash_entry root;
3395 /* List of totals we have found for this file. */
3396 struct aout_link_includes_totals *totals;
3397};
3398
3399/* Look up an entry in an the header file hash table. */
3400
3401#define aout_link_includes_lookup(table, string, create, copy) \
3402 ((struct aout_link_includes_entry *) \
3403 bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
4c3721d5
ILT		 3404
3405/* During the final link step we need to pass around a bunch of
3406 information, so we do it in an instance of this structure. */
3407
3408struct aout_final_link_info
3409{
3410 /* General link information. */
3411 struct bfd_link_info *info;
3412 /* Output bfd. */
3413 bfd *output_bfd;
3414 /* Reloc file positions. */
3415 file_ptr treloff, dreloff;
3416 /* File position of symbols. */
3417 file_ptr symoff;
3418 /* String table. */
1afd2380 3419 struct bfd_strtab_hash *strtab;
14dc2f77
ILT		 3420 /* Header file hash table. */
3421 struct aout_link_includes_table includes;
1afd2380
ILT		 3422 /* A buffer large enough to hold the contents of any section. */
3423 bfd_byte *contents;
3424 /* A buffer large enough to hold the relocs of any section. */
3425 PTR relocs;
3426 /* A buffer large enough to hold the symbol map of any input BFD. */
3427 int *symbol_map;
3428 /* A buffer large enough to hold output symbols of any input BFD. */
3429 struct external_nlist *output_syms;
4c3721d5
ILT		 3430};
3431
14dc2f77
ILT		 3432static struct bfd_hash_entry *aout_link_includes_newfunc
3433 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
4c3721d5
ILT		 3434static boolean aout_link_input_bfd
3435 PARAMS ((struct aout_final_link_info *, bfd *input_bfd));
3436static boolean aout_link_write_symbols
1afd2380 3437 PARAMS ((struct aout_final_link_info *, bfd *input_bfd));
4c3721d5
ILT		 3438static boolean aout_link_write_other_symbol
3439 PARAMS ((struct aout_link_hash_entry *, PTR));
3440static boolean aout_link_input_section
3441 PARAMS ((struct aout_final_link_info *, bfd *input_bfd,
3442 asection *input_section, file_ptr *reloff_ptr,
1afd2380 3443 bfd_size_type rel_size));
4c3721d5
ILT		 3444static boolean aout_link_input_section_std
3445 PARAMS ((struct aout_final_link_info *, bfd *input_bfd,
3446 asection *input_section, struct reloc_std_external *,
1afd2380 3447 bfd_size_type rel_size, bfd_byte *contents));
4c3721d5
ILT		 3448static boolean aout_link_input_section_ext
3449 PARAMS ((struct aout_final_link_info *, bfd *input_bfd,
3450 asection *input_section, struct reloc_ext_external *,
1afd2380 3451 bfd_size_type rel_size, bfd_byte *contents));
4c3721d5
ILT		 3452static INLINE asection *aout_reloc_index_to_section
3453 PARAMS ((bfd *, int));
ec099b4b
ILT		 3454static boolean aout_link_reloc_link_order
3455 PARAMS ((struct aout_final_link_info *, asection *,
3456 struct bfd_link_order *));
4c3721d5 3457
14dc2f77
ILT		 3458/* The function to create a new entry in the header file hash table. */
3459
3460static struct bfd_hash_entry *
3461aout_link_includes_newfunc (entry, table, string)
3462 struct bfd_hash_entry *entry;
3463 struct bfd_hash_table *table;
3464 const char *string;
3465{
3466 struct aout_link_includes_entry *ret =
3467 (struct aout_link_includes_entry *) entry;
3468
3469 /* Allocate the structure if it has not already been allocated by a
3470 subclass. */
3471 if (ret == (struct aout_link_includes_entry *) NULL)
3472 ret = ((struct aout_link_includes_entry *)
3473 bfd_hash_allocate (table,
3474 sizeof (struct aout_link_includes_entry)));
3475 if (ret == (struct aout_link_includes_entry *) NULL)
3476 return (struct bfd_hash_entry *) ret;
3477
3478 /* Call the allocation method of the superclass. */
3479 ret = ((struct aout_link_includes_entry *)
3480 bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string));
3481 if (ret)
3482 {
3483 /* Set local fields. */
3484 ret->totals = NULL;
3485 }
3486
3487 return (struct bfd_hash_entry *) ret;
3488}
3489
4c3721d5
ILT		 3490/* Do the final link step. This is called on the output BFD. The
3491 INFO structure should point to a list of BFDs linked through the
3492 link_next field which can be used to find each BFD which takes part
3493 in the output. Also, each section in ABFD should point to a list
3494 of bfd_link_order structures which list all the input sections for
3495 the output section. */
3496
3497boolean
3498NAME(aout,final_link) (abfd, info, callback)
3499 bfd *abfd;
3500 struct bfd_link_info *info;
3501 void (*callback) PARAMS ((bfd *, file_ptr *, file_ptr *, file_ptr *));
3502{
3503 struct aout_final_link_info aout_info;
14dc2f77 3504 boolean includes_hash_initialized = false;
4c3721d5 3505 register bfd *sub;
1afd2380
ILT		 3506 bfd_size_type trsize, drsize;
3507 size_t max_contents_size;
3508 size_t max_relocs_size;
3509 size_t max_sym_count;
4c3721d5
ILT		 3510 bfd_size_type text_size;
3511 file_ptr text_end;
3512 register struct bfd_link_order *p;
3513 asection *o;
ec099b4b 3514 boolean have_link_order_relocs;
4c3721d5 3515
ae115e51
ILT		 3516 if (info->shared)
3517 abfd->flags |= DYNAMIC;
3518
4c3721d5
ILT		 3519 aout_info.info = info;
3520 aout_info.output_bfd = abfd;
1afd2380
ILT		 3521 aout_info.contents = NULL;
3522 aout_info.relocs = NULL;
14dc2f77
ILT		 3523 aout_info.symbol_map = NULL;
3524 aout_info.output_syms = NULL;
3525
3526 if (! bfd_hash_table_init_n (&aout_info.includes.root,
3527 aout_link_includes_newfunc,
3528 251))
3529 goto error_return;
3530 includes_hash_initialized = true;
1afd2380
ILT		 3531
3532 /* Figure out the largest section size. Also, if generating
3533 relocateable output, count the relocs. */
3534 trsize = 0;
3535 drsize = 0;
3536 max_contents_size = 0;
3537 max_relocs_size = 0;
3538 max_sym_count = 0;
3539 for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
4c3721d5 3540 {
1afd2380 3541 size_t sz;
4c3721d5 3542
1afd2380 3543 if (info->relocateable)
4c3721d5 3544 {
6c8fa8e6 3545 if (bfd_get_flavour (sub) == bfd_target_aout_flavour)
4c3721d5
ILT		 3546 {
3547 trsize += exec_hdr (sub)->a_trsize;
3548 drsize += exec_hdr (sub)->a_drsize;
3549 }
3550 else
3551 {
3552 /* FIXME: We need to identify the .text and .data sections
3553 and call get_reloc_upper_bound and canonicalize_reloc to
3554 work out the number of relocs needed, and then multiply
3555 by the reloc size. */
a9713b91
ILT		 3556 (*_bfd_error_handler)
3557 ("%s: relocateable link from %s to %s not supported",
3558 bfd_get_filename (abfd),
3559 sub->xvec->name, abfd->xvec->name);
3560 bfd_set_error (bfd_error_invalid_operation);
3561 goto error_return;
4c3721d5
ILT		 3562 }
3563 }
1afd2380 3564
204ba9e3
ILT		 3565 if (bfd_get_flavour (sub) == bfd_target_aout_flavour)
3566 {
3567 sz = bfd_section_size (sub, obj_textsec (sub));
3568 if (sz > max_contents_size)
3569 max_contents_size = sz;
3570 sz = bfd_section_size (sub, obj_datasec (sub));
3571 if (sz > max_contents_size)
3572 max_contents_size = sz;
3573
3574 sz = exec_hdr (sub)->a_trsize;
3575 if (sz > max_relocs_size)
3576 max_relocs_size = sz;
3577 sz = exec_hdr (sub)->a_drsize;
3578 if (sz > max_relocs_size)
3579 max_relocs_size = sz;
3580
3581 sz = obj_aout_external_sym_count (sub);
3582 if (sz > max_sym_count)
3583 max_sym_count = sz;
3584 }
1afd2380
ILT		 3585 }
3586
3587 if (info->relocateable)
3588 {
ec6b18c4
ILT		 3589 if (obj_textsec (abfd) != (asection *) NULL)
3590 trsize += (_bfd_count_link_order_relocs (obj_textsec (abfd)
3591 ->link_order_head)
3592 * obj_reloc_entry_size (abfd));
ec6b18c4
ILT		 3593 if (obj_datasec (abfd) != (asection *) NULL)
3594 drsize += (_bfd_count_link_order_relocs (obj_datasec (abfd)
3595 ->link_order_head)
3596 * obj_reloc_entry_size (abfd));
4c3721d5
ILT		 3597 }
3598
1afd2380
ILT		 3599 exec_hdr (abfd)->a_trsize = trsize;
3600 exec_hdr (abfd)->a_drsize = drsize;
3601
964affdc
DM		 3602 exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd);
3603
4c3721d5
ILT		 3604 /* Adjust the section sizes and vmas according to the magic number.
3605 This sets a_text, a_data and a_bss in the exec_hdr and sets the
3606 filepos for each section. */
3607 if (! NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end))
1afd2380 3608 goto error_return;
4c3721d5
ILT		 3609
3610 /* The relocation and symbol file positions differ among a.out
3611 targets. We are passed a callback routine from the backend
3612 specific code to handle this.
3613 FIXME: At this point we do not know how much space the symbol
3614 table will require. This will not work for any (nonstandard)
3615 a.out target that needs to know the symbol table size before it
3616 can compute the relocation file positions. This may or may not
3617 be the case for the hp300hpux target, for example. */
3618 (*callback) (abfd, &aout_info.treloff, &aout_info.dreloff,
3619 &aout_info.symoff);
3620 obj_textsec (abfd)->rel_filepos = aout_info.treloff;
3621 obj_datasec (abfd)->rel_filepos = aout_info.dreloff;
3622 obj_sym_filepos (abfd) = aout_info.symoff;
3623
3624 /* We keep a count of the symbols as we output them. */
3625 obj_aout_external_sym_count (abfd) = 0;
3626
3627 /* We accumulate the string table as we write out the symbols. */
1afd2380
ILT		 3628 aout_info.strtab = _bfd_stringtab_init ();
3629 if (aout_info.strtab == NULL)
3630 goto error_return;
3631
3632 /* Allocate buffers to hold section contents and relocs. */
58142f10
ILT		 3633 aout_info.contents = (bfd_byte *) bfd_malloc (max_contents_size);
3634 aout_info.relocs = (PTR) bfd_malloc (max_relocs_size);
3635 aout_info.symbol_map = (int *) bfd_malloc (max_sym_count * sizeof (int *));
1afd2380 3636 aout_info.output_syms = ((struct external_nlist *)
58142f10
ILT		 3637 bfd_malloc ((max_sym_count + 1)
3638 * sizeof (struct external_nlist)));
1afd2380
ILT		 3639 if ((aout_info.contents == NULL && max_contents_size != 0)
3640 || (aout_info.relocs == NULL && max_relocs_size != 0)
3641 || (aout_info.symbol_map == NULL && max_sym_count != 0)
3642 || aout_info.output_syms == NULL)
58142f10 3643 goto error_return;
4c3721d5 3644
34e9ffbc
NH		 3645 /* If we have a symbol named __DYNAMIC, force it out now. This is
3646 required by SunOS. Doing this here rather than in sunos.c is a
3647 hack, but it's easier than exporting everything which would be
3648 needed. */
3649 {
3650 struct aout_link_hash_entry *h;
3651
3652 h = aout_link_hash_lookup (aout_hash_table (info), "__DYNAMIC",
3653 false, false, false);
3654 if (h != NULL)
3655 aout_link_write_other_symbol (h, &aout_info);
3656 }
3657
4c3721d5
ILT		 3658 /* The most time efficient way to do the link would be to read all
3659 the input object files into memory and then sort out the
3660 information into the output file. Unfortunately, that will
3661 probably use too much memory. Another method would be to step
3662 through everything that composes the text section and write it
3663 out, and then everything that composes the data section and write
3664 it out, and then write out the relocs, and then write out the
3665 symbols. Unfortunately, that requires reading stuff from each
3666 input file several times, and we will not be able to keep all the
3667 input files open simultaneously, and reopening them will be slow.
3668
3669 What we do is basically process one input file at a time. We do
3670 everything we need to do with an input file once--copy over the
3671 section contents, handle the relocation information, and write
3672 out the symbols--and then we throw away the information we read
3673 from it. This approach requires a lot of lseeks of the output
3674 file, which is unfortunate but still faster than reopening a lot
3675 of files.
3676
3677 We use the output_has_begun field of the input BFDs to see
3678 whether we have already handled it. */
3679 for (sub = info->input_bfds; sub != (bfd *) NULL; sub = sub->link_next)
3680 sub->output_has_begun = false;
3681
ec099b4b 3682 have_link_order_relocs = false;
4c3721d5
ILT		 3683 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
3684 {
4c3721d5
ILT		 3685 for (p = o->link_order_head;
3686 p != (struct bfd_link_order *) NULL;
3687 p = p->next)
3688 {
e68de5d5
ILT		 3689 if (p->type == bfd_indirect_link_order
3690 && (bfd_get_flavour (p->u.indirect.section->owner)
3691 == bfd_target_aout_flavour))
4c3721d5 3692 {
e68de5d5
ILT		 3693 bfd *input_bfd;
3694
4c3721d5 3695 input_bfd = p->u.indirect.section->owner;
e68de5d5 3696 if (! input_bfd->output_has_begun)
4c3721d5 3697 {
e68de5d5 3698 if (! aout_link_input_bfd (&aout_info, input_bfd))
1afd2380 3699 goto error_return;
e68de5d5 3700 input_bfd->output_has_begun = true;
4c3721d5 3701 }
e68de5d5 3702 }
ec099b4b
ILT		 3703 else if (p->type == bfd_section_reloc_link_order
3704 || p->type == bfd_symbol_reloc_link_order)
3705 {
3706 /* These are handled below. */
3707 have_link_order_relocs = true;
3708 }
e68de5d5
ILT		 3709 else
3710 {
4c3721d5 3711 if (! _bfd_default_link_order (abfd, info, o, p))
1afd2380 3712 goto error_return;
4c3721d5
ILT		 3713 }
3714 }
3715 }
3716
3717 /* Write out any symbols that we have not already written out. */
3718 aout_link_hash_traverse (aout_hash_table (info),
3719 aout_link_write_other_symbol,
3720 (PTR) &aout_info);
3721
ec099b4b
ILT		 3722 /* Now handle any relocs we were asked to create by the linker.
3723 These did not come from any input file. We must do these after
3724 we have written out all the symbols, so that we know the symbol
3725 indices to use. */
3726 if (have_link_order_relocs)
3727 {
3728 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
3729 {
3730 for (p = o->link_order_head;
3731 p != (struct bfd_link_order *) NULL;
3732 p = p->next)
3733 {
3734 if (p->type == bfd_section_reloc_link_order
3735 || p->type == bfd_symbol_reloc_link_order)
3736 {
3737 if (! aout_link_reloc_link_order (&aout_info, o, p))
1afd2380 3738 goto error_return;
ec099b4b
ILT		 3739 }
3740 }
3741 }
3742 }
3743
1afd2380
ILT		 3744 if (aout_info.contents != NULL)
3745 {
3746 free (aout_info.contents);
3747 aout_info.contents = NULL;
3748 }
3749 if (aout_info.relocs != NULL)
3750 {
3751 free (aout_info.relocs);
3752 aout_info.relocs = NULL;
3753 }
3754 if (aout_info.symbol_map != NULL)
3755 {
3756 free (aout_info.symbol_map);
3757 aout_info.symbol_map = NULL;
3758 }
3759 if (aout_info.output_syms != NULL)
3760 {
3761 free (aout_info.output_syms);
3762 aout_info.output_syms = NULL;
3763 }
14dc2f77
ILT		 3764 if (includes_hash_initialized)
3765 {
3766 bfd_hash_table_free (&aout_info.includes.root);
3767 includes_hash_initialized = false;
3768 }
1afd2380 3769
e85e8bfe
ILT		 3770 /* Finish up any dynamic linking we may be doing. */
3771 if (aout_backend_info (abfd)->finish_dynamic_link != NULL)
3772 {
3773 if (! (*aout_backend_info (abfd)->finish_dynamic_link) (abfd, info))
1afd2380 3774 goto error_return;
e85e8bfe
ILT		 3775 }
3776
4c3721d5
ILT		 3777 /* Update the header information. */
3778 abfd->symcount = obj_aout_external_sym_count (abfd);
3779 exec_hdr (abfd)->a_syms = abfd->symcount * EXTERNAL_NLIST_SIZE;
3780 obj_str_filepos (abfd) = obj_sym_filepos (abfd) + exec_hdr (abfd)->a_syms;
3781 obj_textsec (abfd)->reloc_count =
3782 exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd);
3783 obj_datasec (abfd)->reloc_count =
3784 exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd);
3785
3786 /* Write out the string table. */
3787 if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0)
1afd2380
ILT		 3788 goto error_return;
3789 return emit_stringtab (abfd, aout_info.strtab);
3790
3791 error_return:
3792 if (aout_info.contents != NULL)
3793 free (aout_info.contents);
3794 if (aout_info.relocs != NULL)
3795 free (aout_info.relocs);
3796 if (aout_info.symbol_map != NULL)
3797 free (aout_info.symbol_map);
3798 if (aout_info.output_syms != NULL)
3799 free (aout_info.output_syms);
14dc2f77
ILT		 3800 if (includes_hash_initialized)
3801 bfd_hash_table_free (&aout_info.includes.root);
1afd2380 3802 return false;
4c3721d5
ILT		 3803}
3804
3805/* Link an a.out input BFD into the output file. */
3806
3807static boolean
3808aout_link_input_bfd (finfo, input_bfd)
3809 struct aout_final_link_info *finfo;
3810 bfd *input_bfd;
3811{
3812 bfd_size_type sym_count;
4c3721d5
ILT		 3813
3814 BFD_ASSERT (bfd_get_format (input_bfd) == bfd_object);
3815
e85e8bfe
ILT		 3816 /* If this is a dynamic object, it may need special handling. */
3817 if ((input_bfd->flags & DYNAMIC) != 0
3818 && aout_backend_info (input_bfd)->link_dynamic_object != NULL)
3819 {
3820 return ((*aout_backend_info (input_bfd)->link_dynamic_object)
3821 (finfo->info, input_bfd));
3822 }
3823
4c3721d5
ILT		 3824 /* Get the symbols. We probably have them already, unless
3825 finfo->info->keep_memory is false. */
5c8444f8 3826 if (! aout_get_external_symbols (input_bfd))
4c3721d5
ILT		 3827 return false;
3828
3829 sym_count = obj_aout_external_sym_count (input_bfd);
4c3721d5 3830
1afd2380
ILT		 3831 /* Write out the symbols and get a map of the new indices. The map
3832 is placed into finfo->symbol_map. */
3833 if (! aout_link_write_symbols (finfo, input_bfd))
3834 return false;
4c3721d5 3835
1afd2380
ILT		 3836 /* Relocate and write out the sections. These functions use the
3837 symbol map created by aout_link_write_symbols. */
4c3721d5
ILT		 3838 if (! aout_link_input_section (finfo, input_bfd,
3839 obj_textsec (input_bfd),
3840 &finfo->treloff,
1afd2380 3841 exec_hdr (input_bfd)->a_trsize)
4c3721d5
ILT		 3842 || ! aout_link_input_section (finfo, input_bfd,
3843 obj_datasec (input_bfd),
3844 &finfo->dreloff,
1afd2380
ILT		 3845 exec_hdr (input_bfd)->a_drsize))
3846 return false;
4c3721d5
ILT		 3847
3848 /* If we are not keeping memory, we don't need the symbols any
3849 longer. We still need them if we are keeping memory, because the
3850 strings in the hash table point into them. */
3851 if (! finfo->info->keep_memory)
3852 {
3853 if (! aout_link_free_symbols (input_bfd))
1afd2380 3854 return false;
4c3721d5
ILT		 3855 }
3856
3857 return true;
3858}
3859
3860/* Adjust and write out the symbols for an a.out file. Set the new
3861 symbol indices into a symbol_map. */
3862
3863static boolean
1afd2380 3864aout_link_write_symbols (finfo, input_bfd)
4c3721d5
ILT		 3865 struct aout_final_link_info *finfo;
3866 bfd *input_bfd;
4c3721d5
ILT		 3867{
3868 bfd *output_bfd;
3869 bfd_size_type sym_count;
3870 char *strings;
3871 enum bfd_link_strip strip;
3872 enum bfd_link_discard discard;
4c3721d5 3873 struct external_nlist *outsym;
d17fc4c9 3874 bfd_size_type strtab_index;
4c3721d5
ILT		 3875 register struct external_nlist *sym;
3876 struct external_nlist *sym_end;
3877 struct aout_link_hash_entry **sym_hash;
1afd2380 3878 int *symbol_map;
4c3721d5 3879 boolean pass;
ab0434c2 3880 boolean skip_next;
4c3721d5
ILT		 3881
3882 output_bfd = finfo->output_bfd;
3883 sym_count = obj_aout_external_sym_count (input_bfd);
3884 strings = obj_aout_external_strings (input_bfd);
3885 strip = finfo->info->strip;
3886 discard = finfo->info->discard;
1afd2380 3887 outsym = finfo->output_syms;
4c3721d5
ILT		 3888
3889 /* First write out a symbol for this object file, unless we are
3890 discarding such symbols. */
3891 if (strip != strip_all
3892 && (strip != strip_some
3893 || bfd_hash_lookup (finfo->info->keep_hash, input_bfd->filename,
3894 false, false) != NULL)
3895 && discard != discard_all)
3896 {
3897 bfd_h_put_8 (output_bfd, N_TEXT, outsym->e_type);
3898 bfd_h_put_8 (output_bfd, 0, outsym->e_other);
3899 bfd_h_put_16 (output_bfd, (bfd_vma) 0, outsym->e_desc);
1afd2380 3900 strtab_index = add_to_stringtab (output_bfd, finfo->strtab,
d17fc4c9
ILT		 3901 input_bfd->filename, false);
3902 if (strtab_index == (bfd_size_type) -1)
1afd2380 3903 return false;
d17fc4c9 3904 PUT_WORD (output_bfd, strtab_index, outsym->e_strx);
4c3721d5 3905 PUT_WORD (output_bfd,
2edc8357
ILT		 3906 (bfd_get_section_vma (output_bfd,
3907 obj_textsec (input_bfd)->output_section)
3908 + obj_textsec (input_bfd)->output_offset),
4c3721d5
ILT		 3909 outsym->e_value);
3910 ++obj_aout_external_sym_count (output_bfd);
3911 ++outsym;
3912 }
3913
3914 pass = false;
ab0434c2 3915 skip_next = false;
4c3721d5
ILT		 3916 sym = obj_aout_external_syms (input_bfd);
3917 sym_end = sym + sym_count;
3918 sym_hash = obj_aout_sym_hashes (input_bfd);
1afd2380 3919 symbol_map = finfo->symbol_map;
14dc2f77 3920 memset (symbol_map, 0, sym_count * sizeof *symbol_map);
4c3721d5
ILT		 3921 for (; sym < sym_end; sym++, sym_hash++, symbol_map++)
3922 {
3923 const char *name;
3924 int type;
d6d6b18a 3925 struct aout_link_hash_entry *h;
4c3721d5
ILT		 3926 boolean skip;
3927 asection *symsec;
3928 bfd_vma val = 0;
d17fc4c9 3929 boolean copy;
4c3721d5 3930
14dc2f77
ILT		 3931 /* We set *symbol_map to 0 above for all symbols. If it has
3932 already been set to -1 for this symbol, it means that we are
3933 discarding it because it appears in a duplicate header file.
3934 See the N_BINCL code below. */
3935 if (*symbol_map == -1)
3936 continue;
3937
3938 /* Initialize *symbol_map to -1, which means that the symbol was
3939 not copied into the output file. We will change it later if
3940 we do copy the symbol over. */
4c3721d5
ILT		 3941 *symbol_map = -1;
3942
3943 type = bfd_h_get_8 (input_bfd, sym->e_type);
3944 name = strings + GET_WORD (input_bfd, sym->e_strx);
3945
d6d6b18a
ILT		 3946 h = NULL;
3947
4c3721d5
ILT		 3948 if (pass)
3949 {
53155af1
ILT		 3950 /* Pass this symbol through. It is the target of an
3951 indirect or warning symbol. */
4c3721d5
ILT		 3952 val = GET_WORD (input_bfd, sym->e_value);
3953 pass = false;
3954 }
ab0434c2 3955 else if (skip_next)
53155af1
ILT		 3956 {
3957 /* Skip this symbol, which is the target of an indirect
3958 symbol that we have changed to no longer be an indirect
3959 symbol. */
ab0434c2 3960 skip_next = false;
53155af1
ILT		 3961 continue;
3962 }
4c3721d5
ILT		 3963 else
3964 {
53155af1 3965 struct aout_link_hash_entry *hresolve;
4c3721d5
ILT		 3966
3967 /* We have saved the hash table entry for this symbol, if
3968 there is one. Note that we could just look it up again
3969 in the hash table, provided we first check that it is an
3970 external symbol. */
3971 h = *sym_hash;
3972
3a5b50f4
ILT		 3973 /* If this is an indirect or warning symbol, then change
3974 hresolve to the base symbol. We also change *sym_hash so
3975 that the relocation routines relocate against the real
3976 symbol. */
53155af1
ILT		 3977 hresolve = h;
3978 if (h != (struct aout_link_hash_entry *) NULL
3a5b50f4
ILT		 3979 && (h->root.type == bfd_link_hash_indirect
3980 || h->root.type == bfd_link_hash_warning))
53155af1
ILT		 3981 {
3982 hresolve = (struct aout_link_hash_entry *) h->root.u.i.link;
118e8d1c
ILT		 3983 while (hresolve->root.type == bfd_link_hash_indirect
3984 || hresolve->root.type == bfd_link_hash_warning)
53155af1
ILT		 3985 hresolve = ((struct aout_link_hash_entry *)
3986 hresolve->root.u.i.link);
3987 *sym_hash = hresolve;
3988 }
3989
4c3721d5
ILT		 3990 /* If the symbol has already been written out, skip it. */
3991 if (h != (struct aout_link_hash_entry *) NULL
e85e8bfe 3992 && h->root.type != bfd_link_hash_warning
35fee729 3993 && h->written)
4c3721d5 3994 {
ab0434c2
ILT		 3995 if ((type & N_TYPE) == N_INDR
3996 || type == N_WARNING)
3997 skip_next = true;
4c3721d5
ILT		 3998 *symbol_map = h->indx;
3999 continue;
4000 }
4001
4002 /* See if we are stripping this symbol. */
4003 skip = false;
4004 switch (strip)
4005 {
4006 case strip_none:
4007 break;
4008 case strip_debugger:
4009 if ((type & N_STAB) != 0)
4010 skip = true;
4011 break;
4012 case strip_some:
4013 if (bfd_hash_lookup (finfo->info->keep_hash, name, false, false)
4014 == NULL)
4015 skip = true;
4016 break;
4017 case strip_all:
4018 skip = true;
4019 break;
4020 }
4021 if (skip)
4022 {
4023 if (h != (struct aout_link_hash_entry *) NULL)
35fee729 4024 h->written = true;
4c3721d5
ILT		 4025 continue;
4026 }
4027
4028 /* Get the value of the symbol. */
4298e311
ILT		 4029 if ((type & N_TYPE) == N_TEXT
4030 || type == N_WEAKT)
4c3721d5 4031 symsec = obj_textsec (input_bfd);
4298e311
ILT		 4032 else if ((type & N_TYPE) == N_DATA
4033 || type == N_WEAKD)
4c3721d5 4034 symsec = obj_datasec (input_bfd);
4298e311
ILT		 4035 else if ((type & N_TYPE) == N_BSS
4036 || type == N_WEAKB)
4c3721d5 4037 symsec = obj_bsssec (input_bfd);
4298e311
ILT		 4038 else if ((type & N_TYPE) == N_ABS
4039 || type == N_WEAKA)
4587b578 4040 symsec = bfd_abs_section_ptr;
53155af1
ILT		 4041 else if (((type & N_TYPE) == N_INDR
4042 && (hresolve == (struct aout_link_hash_entry *) NULL
4043 || (hresolve->root.type != bfd_link_hash_defined
6c97aedf 4044 && hresolve->root.type != bfd_link_hash_defweak
53155af1 4045 && hresolve->root.type != bfd_link_hash_common)))
4c3721d5
ILT		 4046 || type == N_WARNING)
4047 {
53155af1
ILT		 4048 /* Pass the next symbol through unchanged. The
4049 condition above for indirect symbols is so that if
4050 the indirect symbol was defined, we output it with
4051 the correct definition so the debugger will
4052 understand it. */
4c3721d5
ILT		 4053 pass = true;
4054 val = GET_WORD (input_bfd, sym->e_value);
4055 symsec = NULL;
4056 }
4057 else if ((type & N_STAB) != 0)
4058 {
4059 val = GET_WORD (input_bfd, sym->e_value);
4060 symsec = NULL;
4061 }
4062 else
4063 {
53155af1
ILT		 4064 /* If we get here with an indirect symbol, it means that
4065 we are outputting it with a real definition. In such
4066 a case we do not want to output the next symbol,
4067 which is the target of the indirection. */
4068 if ((type & N_TYPE) == N_INDR)
ab0434c2 4069 skip_next = true;
53155af1 4070
f4945271
ILT		 4071 symsec = NULL;
4072
53155af1
ILT		 4073 /* We need to get the value from the hash table. We use
4074 hresolve so that if we have defined an indirect
4075 symbol we output the final definition. */
4c3721d5 4076 if (h == (struct aout_link_hash_entry *) NULL)
f4945271
ILT		 4077 {
4078 switch (type & N_TYPE)
4079 {
4080 case N_SETT:
4081 symsec = obj_textsec (input_bfd);
4082 break;
4083 case N_SETD:
4084 symsec = obj_datasec (input_bfd);
4085 break;
4086 case N_SETB:
4087 symsec = obj_bsssec (input_bfd);
4088 break;
4089 case N_SETA:
4090 symsec = bfd_abs_section_ptr;
4091 break;
4092 default:
4093 val = 0;
4094 break;
4095 }
4096 }
6c97aedf
ILT		 4097 else if (hresolve->root.type == bfd_link_hash_defined
4098 || hresolve->root.type == bfd_link_hash_defweak)
4c3721d5 4099 {
53155af1 4100 asection *input_section;
4c3721d5
ILT		 4101 asection *output_section;
4102
6c97aedf
ILT		 4103 /* This case usually means a common symbol which was
4104 turned into a defined symbol. */
53155af1
ILT		 4105 input_section = hresolve->root.u.def.section;
4106 output_section = input_section->output_section;
4587b578 4107 BFD_ASSERT (bfd_is_abs_section (output_section)
4c3721d5 4108 || output_section->owner == output_bfd);
53155af1 4109 val = (hresolve->root.u.def.value
4c3721d5 4110 + bfd_get_section_vma (output_bfd, output_section)
53155af1 4111 + input_section->output_offset);
4c3721d5
ILT		 4112
4113 /* Get the correct type based on the section. If
4114 this is a constructed set, force it to be
4115 globally visible. */
4116 if (type == N_SETT
4117 || type == N_SETD
4118 || type == N_SETB
4119 || type == N_SETA)
4120 type |= N_EXT;
4121
4122 type &=~ N_TYPE;
4123
4124 if (output_section == obj_textsec (output_bfd))
6c97aedf
ILT		 4125 type |= (hresolve->root.type == bfd_link_hash_defined
4126 ? N_TEXT
4127 : N_WEAKT);
4c3721d5 4128 else if (output_section == obj_datasec (output_bfd))
6c97aedf
ILT		 4129 type |= (hresolve->root.type == bfd_link_hash_defined
4130 ? N_DATA
4131 : N_WEAKD);
4c3721d5 4132 else if (output_section == obj_bsssec (output_bfd))
6c97aedf
ILT		 4133 type |= (hresolve->root.type == bfd_link_hash_defined
4134 ? N_BSS
4135 : N_WEAKB);
4c3721d5 4136 else
6c97aedf
ILT		 4137 type |= (hresolve->root.type == bfd_link_hash_defined
4138 ? N_ABS
4139 : N_WEAKA);
4c3721d5 4140 }
53155af1
ILT		 4141 else if (hresolve->root.type == bfd_link_hash_common)
4142 val = hresolve->root.u.c.size;
6c97aedf 4143 else if (hresolve->root.type == bfd_link_hash_undefweak)
4298e311
ILT		 4144 {
4145 val = 0;
4146 type = N_WEAKU;
4147 }
4c3721d5
ILT		 4148 else
4149 val = 0;
4c3721d5
ILT		 4150 }
4151 if (symsec != (asection *) NULL)
4152 val = (symsec->output_section->vma
4153 + symsec->output_offset
4154 + (GET_WORD (input_bfd, sym->e_value)
4155 - symsec->vma));
4156
4157 /* If this is a global symbol set the written flag, and if
4158 it is a local symbol see if we should discard it. */
4159 if (h != (struct aout_link_hash_entry *) NULL)
4160 {
35fee729 4161 h->written = true;
4c3721d5
ILT		 4162 h->indx = obj_aout_external_sym_count (output_bfd);
4163 }
f4945271
ILT		 4164 else if ((type & N_TYPE) != N_SETT
4165 && (type & N_TYPE) != N_SETD
4166 && (type & N_TYPE) != N_SETB
4167 && (type & N_TYPE) != N_SETA)
4c3721d5
ILT		 4168 {
4169 switch (discard)
4170 {
4171 case discard_none:
4172 break;
4173 case discard_l:
4174 if (*name == *finfo->info->lprefix
4175 && (finfo->info->lprefix_len == 1
4176 || strncmp (name, finfo->info->lprefix,
4177 finfo->info->lprefix_len) == 0))
4178 skip = true;
4179 break;
4180 case discard_all:
4181 skip = true;
4182 break;
4183 }
4184 if (skip)
4185 {
4186 pass = false;
4187 continue;
4188 }
4189 }
14dc2f77
ILT		 4190
4191 /* An N_BINCL symbol indicates the start of the stabs
4192 entries for a header file. We need to scan ahead to the
4193 next N_EINCL symbol, ignoring nesting, adding up all the
4194 characters in the symbol names, not including the file
4195 numbers in types (the first number after an open
4196 parenthesis). */
4197 if (type == N_BINCL)
4198 {
4199 struct external_nlist *incl_sym;
4200 int nest;
4201 struct aout_link_includes_entry *incl_entry;
4202 struct aout_link_includes_totals *t;
4203
4204 val = 0;
4205 nest = 0;
4206 for (incl_sym = sym + 1; incl_sym < sym_end; incl_sym++)
4207 {
4208 int incl_type;
4209
4210 incl_type = bfd_h_get_8 (input_bfd, incl_sym->e_type);
4211 if (incl_type == N_EINCL)
4212 {
4213 if (nest == 0)
4214 break;
4215 --nest;
4216 }
4217 else if (incl_type == N_BINCL)
4218 ++nest;
4219 else if (nest == 0)
4220 {
4221 const char *s;
4222
4223 s = strings + GET_WORD (input_bfd, incl_sym->e_strx);
4224 for (; *s != '\0'; s++)
4225 {
4226 val += *s;
4227 if (*s == '(')
4228 {
4229 /* Skip the file number. */
4230 ++s;
4231 while (isdigit ((unsigned char) *s))
4232 ++s;
4233 --s;
4234 }
4235 }
4236 }
4237 }
4238
4239 /* If we have already included a header file with the
4240 same value, then replace this one with an N_EXCL
4241 symbol. */
4242 copy = ! finfo->info->keep_memory;
4243 incl_entry = aout_link_includes_lookup (&finfo->includes,
4244 name, true, copy);
4245 if (incl_entry == NULL)
4246 return false;
4247 for (t = incl_entry->totals; t != NULL; t = t->next)
4248 if (t->total == val)
4249 break;
4250 if (t == NULL)
4251 {
4252 /* This is the first time we have seen this header
4253 file with this set of stabs strings. */
4254 t = ((struct aout_link_includes_totals *)
4255 bfd_hash_allocate (&finfo->includes.root,
4256 sizeof *t));
4257 if (t == NULL)
4258 return false;
4259 t->total = val;
4260 t->next = incl_entry->totals;
4261 incl_entry->totals = t;
4262 }
4263 else
4264 {
4265 int *incl_map;
4266
4267 /* This is a duplicate header file. We must change
4268 it to be an N_EXCL entry, and mark all the
4269 included symbols to prevent outputting them. */
4270 type = N_EXCL;
4271
4272 nest = 0;
4273 for (incl_sym = sym + 1, incl_map = symbol_map + 1;
4274 incl_sym < sym_end;
4275 incl_sym++, incl_map++)
4276 {
4277 int incl_type;
4278
4279 incl_type = bfd_h_get_8 (input_bfd, incl_sym->e_type);
4280 if (incl_type == N_EINCL)
4281 {
4282 if (nest == 0)
4283 {
4284 *incl_map = -1;
4285 break;
4286 }
4287 --nest;
4288 }
4289 else if (incl_type == N_BINCL)
4290 ++nest;
4291 else if (nest == 0)
4292 *incl_map = -1;
4293 }
4294 }
4295 }
4c3721d5
ILT		 4296 }
4297
4298 /* Copy this symbol into the list of symbols we are going to
4299 write out. */
4300 bfd_h_put_8 (output_bfd, type, outsym->e_type);
4301 bfd_h_put_8 (output_bfd, bfd_h_get_8 (input_bfd, sym->e_other),
4302 outsym->e_other);
4303 bfd_h_put_16 (output_bfd, bfd_h_get_16 (input_bfd, sym->e_desc),
4304 outsym->e_desc);
d17fc4c9 4305 copy = false;
d6d6b18a
ILT		 4306 if (! finfo->info->keep_memory)
4307 {
4308 /* name points into a string table which we are going to
4309 free. If there is a hash table entry, use that string.
4310 Otherwise, copy name into memory. */
4311 if (h != (struct aout_link_hash_entry *) NULL)
1afd2380 4312 name = h->root.root.string;
d6d6b18a 4313 else
d17fc4c9 4314 copy = true;
d6d6b18a 4315 }
1afd2380 4316 strtab_index = add_to_stringtab (output_bfd, finfo->strtab,
d17fc4c9
ILT		 4317 name, copy);
4318 if (strtab_index == (bfd_size_type) -1)
1afd2380 4319 return false;
d17fc4c9 4320 PUT_WORD (output_bfd, strtab_index, outsym->e_strx);
4c3721d5
ILT		 4321 PUT_WORD (output_bfd, val, outsym->e_value);
4322 *symbol_map = obj_aout_external_sym_count (output_bfd);
4323 ++obj_aout_external_sym_count (output_bfd);
4324 ++outsym;
4325 }
4326
4327 /* Write out the output symbols we have just constructed. */
1afd2380 4328 if (outsym > finfo->output_syms)
4c3721d5
ILT		 4329 {
4330 bfd_size_type outsym_count;
4331
4332 if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0)
1afd2380
ILT		 4333 return false;
4334 outsym_count = outsym - finfo->output_syms;
4335 if (bfd_write ((PTR) finfo->output_syms,
4336 (bfd_size_type) EXTERNAL_NLIST_SIZE,
4c3721d5
ILT		 4337 (bfd_size_type) outsym_count, output_bfd)
4338 != outsym_count * EXTERNAL_NLIST_SIZE)
1afd2380 4339 return false;
4c3721d5
ILT		 4340 finfo->symoff += outsym_count * EXTERNAL_NLIST_SIZE;
4341 }
4342
4343 return true;
4344}
4345
4346/* Write out a symbol that was not associated with an a.out input
4347 object. */
4348
4349static boolean
4350aout_link_write_other_symbol (h, data)
4351 struct aout_link_hash_entry *h;
4352 PTR data;
4353{
4354 struct aout_final_link_info *finfo = (struct aout_final_link_info *) data;
4355 bfd *output_bfd;
4356 int type;
4357 bfd_vma val;
4358 struct external_nlist outsym;
d17fc4c9 4359 bfd_size_type indx;
4c3721d5 4360
e85e8bfe
ILT		 4361 output_bfd = finfo->output_bfd;
4362
4363 if (aout_backend_info (output_bfd)->write_dynamic_symbol != NULL)
4364 {
4365 if (! ((*aout_backend_info (output_bfd)->write_dynamic_symbol)
4366 (output_bfd, finfo->info, h)))
4367 {
4368 /* FIXME: No way to handle errors. */
4369 abort ();
4370 }
4371 }
4372
35fee729 4373 if (h->written)
4c3721d5
ILT		 4374 return true;
4375
35fee729 4376 h->written = true;
9783e04a 4377
74942465
ILT		 4378 /* An indx of -2 means the symbol must be written. */
4379 if (h->indx != -2
4380 && (finfo->info->strip == strip_all
4381 || (finfo->info->strip == strip_some
4382 && bfd_hash_lookup (finfo->info->keep_hash, h->root.root.string,
4383 false, false) == NULL)))
9783e04a
DM		 4384 return true;
4385
4c3721d5
ILT		 4386 switch (h->root.type)
4387 {
4388 default:
4c3721d5
ILT		 4389 abort ();
4390 /* Avoid variable not initialized warnings. */
4391 return true;
f4945271
ILT		 4392 case bfd_link_hash_new:
4393 /* This can happen for set symbols when sets are not being
4394 built. */
4395 return true;
4c3721d5
ILT		 4396 case bfd_link_hash_undefined:
4397 type = N_UNDF | N_EXT;
4398 val = 0;
4399 break;
4400 case bfd_link_hash_defined:
6c97aedf 4401 case bfd_link_hash_defweak:
4c3721d5
ILT		 4402 {
4403 asection *sec;
4404
4f019d04 4405 sec = h->root.u.def.section->output_section;
4587b578 4406 BFD_ASSERT (bfd_is_abs_section (sec)
4c3721d5
ILT		 4407 || sec->owner == output_bfd);
4408 if (sec == obj_textsec (output_bfd))
6c97aedf 4409 type = h->root.type == bfd_link_hash_defined ? N_TEXT : N_WEAKT;
4c3721d5 4410 else if (sec == obj_datasec (output_bfd))
6c97aedf 4411 type = h->root.type == bfd_link_hash_defined ? N_DATA : N_WEAKD;
4c3721d5 4412 else if (sec == obj_bsssec (output_bfd))
6c97aedf 4413 type = h->root.type == bfd_link_hash_defined ? N_BSS : N_WEAKB;
4c3721d5 4414 else
6c97aedf
ILT		 4415 type = h->root.type == bfd_link_hash_defined ? N_ABS : N_WEAKA;
4416 type |= N_EXT;
4c3721d5 4417 val = (h->root.u.def.value
4f019d04
ILT		 4418 + sec->vma
4419 + h->root.u.def.section->output_offset);
4c3721d5
ILT		 4420 }
4421 break;
4422 case bfd_link_hash_common:
4423 type = N_UNDF | N_EXT;
4424 val = h->root.u.c.size;
4425 break;
6c97aedf 4426 case bfd_link_hash_undefweak:
4298e311
ILT		 4427 type = N_WEAKU;
4428 val = 0;
4c3721d5
ILT		 4429 case bfd_link_hash_indirect:
4430 case bfd_link_hash_warning:
4431 /* FIXME: Ignore these for now. The circumstances under which
4432 they should be written out are not clear to me. */
4433 return true;
4434 }
4435
4436 bfd_h_put_8 (output_bfd, type, outsym.e_type);
4437 bfd_h_put_8 (output_bfd, 0, outsym.e_other);
4438 bfd_h_put_16 (output_bfd, 0, outsym.e_desc);
1afd2380 4439 indx = add_to_stringtab (output_bfd, finfo->strtab, h->root.root.string,
d17fc4c9
ILT		 4440 false);
4441 if (indx == (bfd_size_type) -1)
4442 {
4443 /* FIXME: No way to handle errors. */
4444 abort ();
4445 }
4446 PUT_WORD (output_bfd, indx, outsym.e_strx);
4c3721d5
ILT		 4447 PUT_WORD (output_bfd, val, outsym.e_value);
4448
4449 if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0
4450 || bfd_write ((PTR) &outsym, (bfd_size_type) EXTERNAL_NLIST_SIZE,
4451 (bfd_size_type) 1, output_bfd) != EXTERNAL_NLIST_SIZE)
4452 {
4453 /* FIXME: No way to handle errors. */
4454 abort ();
4455 }
4456
4457 finfo->symoff += EXTERNAL_NLIST_SIZE;
4458 h->indx = obj_aout_external_sym_count (output_bfd);
4459 ++obj_aout_external_sym_count (output_bfd);
4460
4461 return true;
4462}
4463
4464/* Link an a.out section into the output file. */
4465
4466static boolean
4467aout_link_input_section (finfo, input_bfd, input_section, reloff_ptr,
1afd2380 4468 rel_size)
4c3721d5
ILT		 4469 struct aout_final_link_info *finfo;
4470 bfd *input_bfd;
4471 asection *input_section;
4472 file_ptr *reloff_ptr;
4473 bfd_size_type rel_size;
4c3721d5
ILT		 4474{
4475 bfd_size_type input_size;
e85e8bfe 4476 PTR relocs;
4c3721d5
ILT		 4477
4478 /* Get the section contents. */
4479 input_size = bfd_section_size (input_bfd, input_section);
1afd2380
ILT		 4480 if (! bfd_get_section_contents (input_bfd, input_section,
4481 (PTR) finfo->contents,
4c3721d5 4482 (file_ptr) 0, input_size))
1afd2380 4483 return false;
4c3721d5 4484
e85e8bfe
ILT		 4485 /* Read in the relocs if we haven't already done it. */
4486 if (aout_section_data (input_section) != NULL
4487 && aout_section_data (input_section)->relocs != NULL)
4488 relocs = aout_section_data (input_section)->relocs;
4489 else
80425e6c 4490 {
1afd2380 4491 relocs = finfo->relocs;
875e4716
ILT		 4492 if (rel_size > 0)
4493 {
4494 if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0
4495 || bfd_read (relocs, 1, rel_size, input_bfd) != rel_size)
4496 return false;
4497 }
80425e6c 4498 }
4c3721d5
ILT		 4499
4500 /* Relocate the section contents. */
4501 if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE)
4502 {
4503 if (! aout_link_input_section_std (finfo, input_bfd, input_section,
4504 (struct reloc_std_external *) relocs,
1afd2380
ILT		 4505 rel_size, finfo->contents))
4506 return false;
4c3721d5
ILT		 4507 }
4508 else
4509 {
4510 if (! aout_link_input_section_ext (finfo, input_bfd, input_section,
4511 (struct reloc_ext_external *) relocs,
1afd2380
ILT		 4512 rel_size, finfo->contents))
4513 return false;
4c3721d5
ILT		 4514 }
4515
4516 /* Write out the section contents. */
4517 if (! bfd_set_section_contents (finfo->output_bfd,
4518 input_section->output_section,
1afd2380 4519 (PTR) finfo->contents,
728472f1 4520 input_section->output_offset,
4c3721d5 4521 input_size))
1afd2380 4522 return false;
4c3721d5
ILT		 4523
4524 /* If we are producing relocateable output, the relocs were
4525 modified, and we now write them out. */
875e4716 4526 if (finfo->info->relocateable && rel_size > 0)
4c3721d5
ILT		 4527 {
4528 if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0)
1afd2380 4529 return false;
4c3721d5
ILT		 4530 if (bfd_write (relocs, (bfd_size_type) 1, rel_size, finfo->output_bfd)
4531 != rel_size)
1afd2380 4532 return false;
4c3721d5
ILT		 4533 *reloff_ptr += rel_size;
4534
4535 /* Assert that the relocs have not run into the symbols, and
4536 that if these are the text relocs they have not run into the
4537 data relocs. */
4538 BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd)
4539 && (reloff_ptr != &finfo->treloff
4540 || (*reloff_ptr
4541 <= obj_datasec (finfo->output_bfd)->rel_filepos)));
4542 }
4543
4544 return true;
4545}
4546
4547/* Get the section corresponding to a reloc index. */
4548
4549static INLINE asection *
4550aout_reloc_index_to_section (abfd, indx)
4551 bfd *abfd;
4552 int indx;
4553{
4554 switch (indx & N_TYPE)
4555 {
4556 case N_TEXT:
4557 return obj_textsec (abfd);
4558 case N_DATA:
4559 return obj_datasec (abfd);
4560 case N_BSS:
4561 return obj_bsssec (abfd);
4562 case N_ABS:
fa2302b8 4563 case N_UNDF:
4587b578 4564 return bfd_abs_section_ptr;
4c3721d5
ILT		 4565 default:
4566 abort ();
4567 }
4568}
4569
4570/* Relocate an a.out section using standard a.out relocs. */
4571
4572static boolean
4573aout_link_input_section_std (finfo, input_bfd, input_section, relocs,
1afd2380 4574 rel_size, contents)
4c3721d5
ILT		 4575 struct aout_final_link_info *finfo;
4576 bfd *input_bfd;
4577 asection *input_section;
4578 struct reloc_std_external *relocs;
4579 bfd_size_type rel_size;
4580 bfd_byte *contents;
4c3721d5 4581{
e85e8bfe
ILT		 4582 boolean (*check_dynamic_reloc) PARAMS ((struct bfd_link_info *,
4583 bfd *, asection *,
4584 struct aout_link_hash_entry *,
ae115e51
ILT		 4585 PTR, bfd_byte *, boolean *,
4586 bfd_vma *));
4c3721d5
ILT		 4587 bfd *output_bfd;
4588 boolean relocateable;
4589 struct external_nlist *syms;
4590 char *strings;
4591 struct aout_link_hash_entry **sym_hashes;
1afd2380 4592 int *symbol_map;
4c3721d5
ILT		 4593 bfd_size_type reloc_count;
4594 register struct reloc_std_external *rel;
4595 struct reloc_std_external *rel_end;
4596
4597 output_bfd = finfo->output_bfd;
e85e8bfe 4598 check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc;
4c3721d5
ILT		 4599
4600 BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE);
4601 BFD_ASSERT (input_bfd->xvec->header_byteorder_big_p
4602 == output_bfd->xvec->header_byteorder_big_p);
4603
4604 relocateable = finfo->info->relocateable;
4605 syms = obj_aout_external_syms (input_bfd);
4606 strings = obj_aout_external_strings (input_bfd);
4607 sym_hashes = obj_aout_sym_hashes (input_bfd);
1afd2380 4608 symbol_map = finfo->symbol_map;
4c3721d5
ILT		 4609
4610 reloc_count = rel_size / RELOC_STD_SIZE;
4611 rel = relocs;
4612 rel_end = rel + reloc_count;
4613 for (; rel < rel_end; rel++)
4614 {
4615 bfd_vma r_addr;
4616 int r_index;
4617 int r_extern;
4618 int r_pcrel;
ae115e51 4619 int r_baserel = 0;
f42fe159 4620 reloc_howto_type *howto;
ae115e51 4621 struct aout_link_hash_entry *h = NULL;
4c3721d5
ILT		 4622 bfd_vma relocation;
4623 bfd_reloc_status_type r;
4624
4625 r_addr = GET_SWORD (input_bfd, rel->r_address);
4626
f42fe159
ILT		 4627#ifdef MY_reloc_howto
4628 howto = MY_reloc_howto(input_bfd, rel, r_index, r_extern, r_pcrel);
4629#else
ae115e51
ILT		 4630 {
4631 int r_jmptable;
4632 int r_relative;
4633 int r_length;
4634 unsigned int howto_idx;
4c3721d5 4635
ae115e51
ILT		 4636 if (input_bfd->xvec->header_byteorder_big_p)
4637 {
4638 r_index = ((rel->r_index[0] << 16)
4639 | (rel->r_index[1] << 8)
4640 | rel->r_index[2]);
4641 r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
4642 r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
4643 r_baserel = (0 != (rel->r_type[0] & RELOC_STD_BITS_BASEREL_BIG));
4644 r_jmptable= (0 != (rel->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG));
4645 r_relative= (0 != (rel->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG));
4646 r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_BIG)
4647 >> RELOC_STD_BITS_LENGTH_SH_BIG);
4648 }
4649 else
4650 {
4651 r_index = ((rel->r_index[2] << 16)
4652 | (rel->r_index[1] << 8)
4653 | rel->r_index[0]);
4654 r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
4655 r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
4656 r_baserel = (0 != (rel->r_type[0]
4657 & RELOC_STD_BITS_BASEREL_LITTLE));
4658 r_jmptable= (0 != (rel->r_type[0]
4659 & RELOC_STD_BITS_JMPTABLE_LITTLE));
4660 r_relative= (0 != (rel->r_type[0]
4661 & RELOC_STD_BITS_RELATIVE_LITTLE));
4662 r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE)
4663 >> RELOC_STD_BITS_LENGTH_SH_LITTLE);
4664 }
4665
4666 howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel
4667 + 16 * r_jmptable + 32 * r_relative);
4668 BFD_ASSERT (howto_idx < TABLE_SIZE (howto_table_std));
4669 howto = howto_table_std + howto_idx;
4670 }
f42fe159 4671#endif
4c3721d5
ILT		 4672
4673 if (relocateable)
4674 {
4675 /* We are generating a relocateable output file, and must
4676 modify the reloc accordingly. */
4677 if (r_extern)
4678 {
4c3721d5
ILT		 4679 /* If we know the symbol this relocation is against,
4680 convert it into a relocation against a section. This
4681 is what the native linker does. */
4682 h = sym_hashes[r_index];
4683 if (h != (struct aout_link_hash_entry *) NULL
6c97aedf
ILT		 4684 && (h->root.type == bfd_link_hash_defined
4685 || h->root.type == bfd_link_hash_defweak))
4c3721d5
ILT		 4686 {
4687 asection *output_section;
4688
4689 /* Change the r_extern value. */
4690 if (output_bfd->xvec->header_byteorder_big_p)
4691 rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_BIG;
4692 else
4693 rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_LITTLE;
4694
4695 /* Compute a new r_index. */
4696 output_section = h->root.u.def.section->output_section;
4697 if (output_section == obj_textsec (output_bfd))
4698 r_index = N_TEXT;
4699 else if (output_section == obj_datasec (output_bfd))
4700 r_index = N_DATA;
4701 else if (output_section == obj_bsssec (output_bfd))
4702 r_index = N_BSS;
4703 else
4704 r_index = N_ABS;
4705
4706 /* Add the symbol value and the section VMA to the
4707 addend stored in the contents. */
4708 relocation = (h->root.u.def.value
4709 + output_section->vma
4710 + h->root.u.def.section->output_offset);
4711 }
4712 else
4713 {
4714 /* We must change r_index according to the symbol
4715 map. */
4716 r_index = symbol_map[r_index];
4717
4718 if (r_index == -1)
4719 {
74942465
ILT		 4720 if (h != NULL)
4721 {
4722 /* We decided to strip this symbol, but it
4723 turns out that we can't. Note that we
4724 lose the other and desc information here.
4725 I don't think that will ever matter for a
4726 global symbol. */
4727 if (h->indx < 0)
4728 {
4729 h->indx = -2;
4730 h->written = false;
4731 if (! aout_link_write_other_symbol (h,
4732 (PTR) finfo))
4733 return false;
4734 }
4735 r_index = h->indx;
4736 }
4737 else
4738 {
4739 const char *name;
4740
4741 name = strings + GET_WORD (input_bfd,
4742 syms[r_index].e_strx);
4743 if (! ((*finfo->info->callbacks->unattached_reloc)
4744 (finfo->info, name, input_bfd, input_section,
4745 r_addr)))
4746 return false;
4747 r_index = 0;
4748 }
4c3721d5
ILT		 4749 }
4750
4751 relocation = 0;
4752 }
4753
4754 /* Write out the new r_index value. */
4755 if (output_bfd->xvec->header_byteorder_big_p)
4756 {
4757 rel->r_index[0] = r_index >> 16;
4758 rel->r_index[1] = r_index >> 8;
4759 rel->r_index[2] = r_index;
4760 }
4761 else
4762 {
4763 rel->r_index[2] = r_index >> 16;
4764 rel->r_index[1] = r_index >> 8;
4765 rel->r_index[0] = r_index;
4766 }
4767 }
4768 else
4769 {
4770 asection *section;
4771
4772 /* This is a relocation against a section. We must
4773 adjust by the amount that the section moved. */
4774 section = aout_reloc_index_to_section (input_bfd, r_index);
4775 relocation = (section->output_section->vma
4776 + section->output_offset
4777 - section->vma);
4778 }
4779
4780 /* Change the address of the relocation. */
4781 PUT_WORD (output_bfd,
4782 r_addr + input_section->output_offset,
4783 rel->r_address);
4784
4785 /* Adjust a PC relative relocation by removing the reference
e68de5d5
ILT		 4786 to the original address in the section and including the
4787 reference to the new address. */
4c3721d5 4788 if (r_pcrel)
e68de5d5
ILT		 4789 relocation -= (input_section->output_section->vma
4790 + input_section->output_offset
4791 - input_section->vma);
4c3721d5 4792
943fbd5b
KR		 4793#ifdef MY_relocatable_reloc
4794 MY_relocatable_reloc (howto, output_bfd, rel, relocation, r_addr);
4795#endif
4796
4c3721d5
ILT		 4797 if (relocation == 0)
4798 r = bfd_reloc_ok;
4799 else
34e9ffbc 4800 r = MY_relocate_contents (howto,
4c3721d5
ILT		 4801 input_bfd, relocation,
4802 contents + r_addr);
4803 }
4804 else
4805 {
ae115e51
ILT		 4806 boolean hundef;
4807
4c3721d5
ILT		 4808 /* We are generating an executable, and must do a full
4809 relocation. */
ae115e51 4810 hundef = false;
4c3721d5
ILT		 4811 if (r_extern)
4812 {
4c3721d5 4813 h = sym_hashes[r_index];
e85e8bfe 4814
4c3721d5 4815 if (h != (struct aout_link_hash_entry *) NULL
6c97aedf
ILT		 4816 && (h->root.type == bfd_link_hash_defined
4817 || h->root.type == bfd_link_hash_defweak))
4c3721d5
ILT		 4818 {
4819 relocation = (h->root.u.def.value
4820 + h->root.u.def.section->output_section->vma
4821 + h->root.u.def.section->output_offset);
4822 }
4298e311 4823 else if (h != (struct aout_link_hash_entry *) NULL
6c97aedf 4824 && h->root.type == bfd_link_hash_undefweak)
4298e311 4825 relocation = 0;
4c3721d5
ILT		 4826 else
4827 {
ae115e51 4828 hundef = true;
4c3721d5
ILT		 4829 relocation = 0;
4830 }
4831 }
4832 else
4833 {
4834 asection *section;
4835
4836 section = aout_reloc_index_to_section (input_bfd, r_index);
4837 relocation = (section->output_section->vma
4838 + section->output_offset
4839 - section->vma);
e68de5d5
ILT		 4840 if (r_pcrel)
4841 relocation += input_section->vma;
4c3721d5
ILT		 4842 }
4843
ae115e51
ILT		 4844 if (check_dynamic_reloc != NULL)
4845 {
4846 boolean skip;
4847
4848 if (! ((*check_dynamic_reloc)
4849 (finfo->info, input_bfd, input_section, h,
4850 (PTR) rel, contents, &skip, &relocation)))
4851 return false;
4852 if (skip)
4853 continue;
4854 }
4855
4856 /* Now warn if a global symbol is undefined. We could not
4857 do this earlier, because check_dynamic_reloc might want
4858 to skip this reloc. */
4859 if (hundef && ! finfo->info->shared && ! r_baserel)
4860 {
4861 const char *name;
4862
4863 name = strings + GET_WORD (input_bfd, syms[r_index].e_strx);
4864 if (! ((*finfo->info->callbacks->undefined_symbol)
4865 (finfo->info, name, input_bfd, input_section, r_addr)))
4866 return false;
4867 }
4868
34e9ffbc 4869 r = MY_final_link_relocate (howto,
4c3721d5
ILT		 4870 input_bfd, input_section,
4871 contents, r_addr, relocation,
4872 (bfd_vma) 0);
4873 }
4874
4875 if (r != bfd_reloc_ok)
4876 {
4877 switch (r)
4878 {
4879 default:
4880 case bfd_reloc_outofrange:
4881 abort ();
4882 case bfd_reloc_overflow:
4991ebb9
ILT		 4883 {
4884 const char *name;
4885
4886 if (r_extern)
4887 name = strings + GET_WORD (input_bfd,
4888 syms[r_index].e_strx);
4889 else
4890 {
4891 asection *s;
4892
4893 s = aout_reloc_index_to_section (input_bfd, r_index);
4894 name = bfd_section_name (input_bfd, s);
4895 }
4896 if (! ((*finfo->info->callbacks->reloc_overflow)
f42fe159 4897 (finfo->info, name, howto->name,
4991ebb9
ILT		 4898 (bfd_vma) 0, input_bfd, input_section, r_addr)))
4899 return false;
4900 }
4c3721d5
ILT		 4901 break;
4902 }
4903 }
4904 }
4905
4906 return true;
4907}
4908
4909/* Relocate an a.out section using extended a.out relocs. */
4910
4911static boolean
4912aout_link_input_section_ext (finfo, input_bfd, input_section, relocs,
1afd2380 4913 rel_size, contents)
4c3721d5
ILT		 4914 struct aout_final_link_info *finfo;
4915 bfd *input_bfd;
4916 asection *input_section;
4917 struct reloc_ext_external *relocs;
4918 bfd_size_type rel_size;
4919 bfd_byte *contents;
4c3721d5 4920{
e85e8bfe
ILT		 4921 boolean (*check_dynamic_reloc) PARAMS ((struct bfd_link_info *,
4922 bfd *, asection *,
4923 struct aout_link_hash_entry *,
ae115e51
ILT		 4924 PTR, bfd_byte *, boolean *,
4925 bfd_vma *));
4c3721d5
ILT		 4926 bfd *output_bfd;
4927 boolean relocateable;
4928 struct external_nlist *syms;
4929 char *strings;
4930 struct aout_link_hash_entry **sym_hashes;
1afd2380 4931 int *symbol_map;
4c3721d5
ILT		 4932 bfd_size_type reloc_count;
4933 register struct reloc_ext_external *rel;
4934 struct reloc_ext_external *rel_end;
4935
4936 output_bfd = finfo->output_bfd;
e85e8bfe 4937 check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc;
4c3721d5
ILT		 4938
4939 BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_EXT_SIZE);
4940 BFD_ASSERT (input_bfd->xvec->header_byteorder_big_p
4941 == output_bfd->xvec->header_byteorder_big_p);
4942
4943 relocateable = finfo->info->relocateable;
4944 syms = obj_aout_external_syms (input_bfd);
4945 strings = obj_aout_external_strings (input_bfd);
4946 sym_hashes = obj_aout_sym_hashes (input_bfd);
1afd2380 4947 symbol_map = finfo->symbol_map;
4c3721d5
ILT		 4948
4949 reloc_count = rel_size / RELOC_EXT_SIZE;
4950 rel = relocs;
4951 rel_end = rel + reloc_count;
4952 for (; rel < rel_end; rel++)
4953 {
4954 bfd_vma r_addr;
4955 int r_index;
4956 int r_extern;
ae115e51 4957 unsigned int r_type;
4c3721d5 4958 bfd_vma r_addend;
ae115e51
ILT		 4959 struct aout_link_hash_entry *h = NULL;
4960 asection *r_section = NULL;
4c3721d5
ILT		 4961 bfd_vma relocation;
4962
4963 r_addr = GET_SWORD (input_bfd, rel->r_address);
4964
4965 if (input_bfd->xvec->header_byteorder_big_p)
4966 {
4967 r_index = ((rel->r_index[0] << 16)
4968 | (rel->r_index[1] << 8)
4969 | rel->r_index[2]);
4970 r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG));
4971 r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
4972 >> RELOC_EXT_BITS_TYPE_SH_BIG);
4973 }
4974 else
4975 {
4976 r_index = ((rel->r_index[2] << 16)
4977 | (rel->r_index[1] << 8)
4978 | rel->r_index[0]);
4979 r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE));
4980 r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
4981 >> RELOC_EXT_BITS_TYPE_SH_LITTLE);
4982 }
4983
4984 r_addend = GET_SWORD (input_bfd, rel->r_addend);
4985
ae115e51 4986 BFD_ASSERT (r_type < TABLE_SIZE (howto_table_ext));
e68de5d5 4987
4c3721d5
ILT		 4988 if (relocateable)
4989 {
4990 /* We are generating a relocateable output file, and must
4991 modify the reloc accordingly. */
4992 if (r_extern)
4993 {
4c3721d5
ILT		 4994 /* If we know the symbol this relocation is against,
4995 convert it into a relocation against a section. This
4996 is what the native linker does. */
4997 h = sym_hashes[r_index];
4998 if (h != (struct aout_link_hash_entry *) NULL
6c97aedf
ILT		 4999 && (h->root.type == bfd_link_hash_defined
5000 || h->root.type == bfd_link_hash_defweak))
4c3721d5
ILT		 5001 {
5002 asection *output_section;
5003
5004 /* Change the r_extern value. */
5005 if (output_bfd->xvec->header_byteorder_big_p)
5006 rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_BIG;
5007 else
5008 rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_LITTLE;
5009
5010 /* Compute a new r_index. */
5011 output_section = h->root.u.def.section->output_section;
5012 if (output_section == obj_textsec (output_bfd))
5013 r_index = N_TEXT;
5014 else if (output_section == obj_datasec (output_bfd))
5015 r_index = N_DATA;
5016 else if (output_section == obj_bsssec (output_bfd))
5017 r_index = N_BSS;
5018 else
5019 r_index = N_ABS;
5020
5021 /* Add the symbol value and the section VMA to the
5022 addend. */
5023 relocation = (h->root.u.def.value
5024 + output_section->vma
5025 + h->root.u.def.section->output_offset);
e68de5d5
ILT		 5026
5027 /* Now RELOCATION is the VMA of the final
5028 destination. If this is a PC relative reloc,
5029 then ADDEND is the negative of the source VMA.
5030 We want to set ADDEND to the difference between
5031 the destination VMA and the source VMA, which
5032 means we must adjust RELOCATION by the change in
5033 the source VMA. This is done below. */
4c3721d5
ILT		 5034 }
5035 else
5036 {
5037 /* We must change r_index according to the symbol
5038 map. */
5039 r_index = symbol_map[r_index];
5040
5041 if (r_index == -1)
5042 {
74942465
ILT		 5043 if (h != NULL)
5044 {
5045 /* We decided to strip this symbol, but it
5046 turns out that we can't. Note that we
5047 lose the other and desc information here.
5048 I don't think that will ever matter for a
5049 global symbol. */
5050 if (h->indx < 0)
5051 {
5052 h->indx = -2;
5053 h->written = false;
5054 if (! aout_link_write_other_symbol (h,
5055 (PTR) finfo))
5056 return false;
5057 }
5058 r_index = h->indx;
5059 }
5060 else
5061 {
5062 const char *name;
5063
5064 name = strings + GET_WORD (input_bfd,
5065 syms[r_index].e_strx);
5066 if (! ((*finfo->info->callbacks->unattached_reloc)
5067 (finfo->info, name, input_bfd, input_section,
5068 r_addr)))
5069 return false;
5070 r_index = 0;
5071 }
4c3721d5
ILT		 5072 }
5073
5074 relocation = 0;
e68de5d5
ILT		 5075
5076 /* If this is a PC relative reloc, then the addend
5077 is the negative of the source VMA. We must
5078 adjust it by the change in the source VMA. This
5079 is done below. */
4c3721d5
ILT		 5080 }
5081
5082 /* Write out the new r_index value. */
5083 if (output_bfd->xvec->header_byteorder_big_p)
5084 {
5085 rel->r_index[0] = r_index >> 16;
5086 rel->r_index[1] = r_index >> 8;
5087 rel->r_index[2] = r_index;
5088 }
5089 else
5090 {
5091 rel->r_index[2] = r_index >> 16;
5092 rel->r_index[1] = r_index >> 8;
5093 rel->r_index[0] = r_index;
5094 }
5095 }
5096 else
5097 {
4c3721d5
ILT		 5098 /* This is a relocation against a section. We must
5099 adjust by the amount that the section moved. */
ae115e51
ILT		 5100 r_section = aout_reloc_index_to_section (input_bfd, r_index);
5101 relocation = (r_section->output_section->vma
5102 + r_section->output_offset
5103 - r_section->vma);
4c3721d5 5104
e68de5d5
ILT		 5105 /* If this is a PC relative reloc, then the addend is
5106 the difference in VMA between the destination and the
5107 source. We have just adjusted for the change in VMA
5108 of the destination, so we must also adjust by the
5109 change in VMA of the source. This is done below. */
4c3721d5
ILT		 5110 }
5111
e68de5d5
ILT		 5112 /* As described above, we must always adjust a PC relative
5113 reloc by the change in VMA of the source. */
5114 if (howto_table_ext[r_type].pc_relative)
5115 relocation -= (input_section->output_section->vma
5116 + input_section->output_offset
5117 - input_section->vma);
5118
4c3721d5
ILT		 5119 /* Change the addend if necessary. */
5120 if (relocation != 0)
5121 PUT_WORD (output_bfd, r_addend + relocation, rel->r_addend);
5122
5123 /* Change the address of the relocation. */
5124 PUT_WORD (output_bfd,
5125 r_addr + input_section->output_offset,
5126 rel->r_address);
5127 }
5128 else
5129 {
ae115e51 5130 boolean hundef;
4c3721d5
ILT		 5131 bfd_reloc_status_type r;
5132
5133 /* We are generating an executable, and must do a full
5134 relocation. */
ae115e51 5135 hundef = false;
4c3721d5
ILT		 5136 if (r_extern)
5137 {
4c3721d5 5138 h = sym_hashes[r_index];
e85e8bfe 5139
4c3721d5 5140 if (h != (struct aout_link_hash_entry *) NULL
6c97aedf
ILT		 5141 && (h->root.type == bfd_link_hash_defined
5142 || h->root.type == bfd_link_hash_defweak))
4c3721d5
ILT		 5143 {
5144 relocation = (h->root.u.def.value
5145 + h->root.u.def.section->output_section->vma
5146 + h->root.u.def.section->output_offset);
5147 }
4298e311 5148 else if (h != (struct aout_link_hash_entry *) NULL
6c97aedf 5149 && h->root.type == bfd_link_hash_undefweak)
4298e311 5150 relocation = 0;
4c3721d5
ILT		 5151 else
5152 {
ae115e51 5153 hundef = true;
4c3721d5
ILT		 5154 relocation = 0;
5155 }
5156 }
ae115e51
ILT		 5157 else if (r_type == RELOC_BASE10
5158 || r_type == RELOC_BASE13
5159 || r_type == RELOC_BASE22)
5160 {
5161 struct external_nlist *sym;
5162 int type;
5163
5164 /* For base relative relocs, r_index is always an index
5165 into the symbol table, even if r_extern is 0. */
5166 sym = syms + r_index;
5167 type = bfd_h_get_8 (input_bfd, sym->e_type);
5168 if ((type & N_TYPE) == N_TEXT
5169 || type == N_WEAKT)
5170 r_section = obj_textsec (input_bfd);
5171 else if ((type & N_TYPE) == N_DATA
5172 || type == N_WEAKD)
5173 r_section = obj_datasec (input_bfd);
5174 else if ((type & N_TYPE) == N_BSS
5175 || type == N_WEAKB)
5176 r_section = obj_bsssec (input_bfd);
5177 else if ((type & N_TYPE) == N_ABS
5178 || type == N_WEAKA)
5179 r_section = bfd_abs_section_ptr;
5180 else
5181 abort ();
5182 relocation = (r_section->output_section->vma
5183 + r_section->output_offset
5184 + (GET_WORD (input_bfd, sym->e_value)
5185 - r_section->vma));
5186 }
4c3721d5
ILT		 5187 else
5188 {
ae115e51 5189 r_section = aout_reloc_index_to_section (input_bfd, r_index);
e68de5d5
ILT		 5190
5191 /* If this is a PC relative reloc, then R_ADDEND is the
5192 difference between the two vmas, or
5193 old_dest_sec + old_dest_off - (old_src_sec + old_src_off)
5194 where
5195 old_dest_sec == section->vma
5196 and
5197 old_src_sec == input_section->vma
5198 and
5199 old_src_off == r_addr
5200
5201 _bfd_final_link_relocate expects RELOCATION +
5202 R_ADDEND to be the VMA of the destination minus
5203 r_addr (the minus r_addr is because this relocation
5204 is not pcrel_offset, which is a bit confusing and
5205 should, perhaps, be changed), or
5206 new_dest_sec
5207 where
5208 new_dest_sec == output_section->vma + output_offset
5209 We arrange for this to happen by setting RELOCATION to
5210 new_dest_sec + old_src_sec - old_dest_sec
5211
5212 If this is not a PC relative reloc, then R_ADDEND is
5213 simply the VMA of the destination, so we set
5214 RELOCATION to the change in the destination VMA, or
5215 new_dest_sec - old_dest_sec
5216 */
ae115e51
ILT		 5217 relocation = (r_section->output_section->vma
5218 + r_section->output_offset
5219 - r_section->vma);
e68de5d5
ILT		 5220 if (howto_table_ext[r_type].pc_relative)
5221 relocation += input_section->vma;
4c3721d5
ILT		 5222 }
5223
ae115e51
ILT		 5224 if (check_dynamic_reloc != NULL)
5225 {
5226 boolean skip;
5227
5228 if (! ((*check_dynamic_reloc)
5229 (finfo->info, input_bfd, input_section, h,
5230 (PTR) rel, contents, &skip, &relocation)))
5231 return false;
5232 if (skip)
5233 continue;
5234 }
5235
5236 /* Now warn if a global symbol is undefined. We could not
5237 do this earlier, because check_dynamic_reloc might want
5238 to skip this reloc. */
5239 if (hundef
5240 && ! finfo->info->shared
5241 && r_type != RELOC_BASE10
5242 && r_type != RELOC_BASE13
5243 && r_type != RELOC_BASE22)
5244 {
5245 const char *name;
5246
5247 name = strings + GET_WORD (input_bfd, syms[r_index].e_strx);
5248 if (! ((*finfo->info->callbacks->undefined_symbol)
5249 (finfo->info, name, input_bfd, input_section, r_addr)))
5250 return false;
5251 }
5252
34e9ffbc 5253 r = MY_final_link_relocate (howto_table_ext + r_type,
4c3721d5
ILT		 5254 input_bfd, input_section,
5255 contents, r_addr, relocation,
5256 r_addend);
5257 if (r != bfd_reloc_ok)
5258 {
5259 switch (r)
5260 {
5261 default:
5262 case bfd_reloc_outofrange:
5263 abort ();
5264 case bfd_reloc_overflow:
4991ebb9
ILT		 5265 {
5266 const char *name;
5267
ae115e51
ILT		 5268 if (r_extern
5269 || r_type == RELOC_BASE10
5270 || r_type == RELOC_BASE13
5271 || r_type == RELOC_BASE22)
4991ebb9
ILT		 5272 name = strings + GET_WORD (input_bfd,
5273 syms[r_index].e_strx);
5274 else
5275 {
5276 asection *s;
5277
5278 s = aout_reloc_index_to_section (input_bfd, r_index);
5279 name = bfd_section_name (input_bfd, s);
5280 }
5281 if (! ((*finfo->info->callbacks->reloc_overflow)
5282 (finfo->info, name, howto_table_ext[r_type].name,
5283 r_addend, input_bfd, input_section, r_addr)))
5284 return false;
5285 }
4c3721d5
ILT		 5286 break;
5287 }
5288 }
5289 }
5290 }
5291
5292 return true;
5293}
ec099b4b
ILT		 5294
5295/* Handle a link order which is supposed to generate a reloc. */
5296
5297static boolean
5298aout_link_reloc_link_order (finfo, o, p)
5299 struct aout_final_link_info *finfo;
5300 asection *o;
5301 struct bfd_link_order *p;
5302{
5303 struct bfd_link_order_reloc *pr;
5304 int r_index;
5305 int r_extern;
82b1edf7 5306 reloc_howto_type *howto;
ec099b4b
ILT		 5307 file_ptr *reloff_ptr;
5308 struct reloc_std_external srel;
5309 struct reloc_ext_external erel;
5310 PTR rel_ptr;
5311
5312 pr = p->u.reloc.p;
5313
5314 if (p->type == bfd_section_reloc_link_order)
5315 {
5316 r_extern = 0;
4587b578 5317 if (bfd_is_abs_section (pr->u.section))
ec099b4b
ILT		 5318 r_index = N_ABS | N_EXT;
5319 else
5320 {
5321 BFD_ASSERT (pr->u.section->owner == finfo->output_bfd);
5322 r_index = pr->u.section->target_index;
5323 }
5324 }
5325 else
5326 {
5327 struct aout_link_hash_entry *h;
5328
5329 BFD_ASSERT (p->type == bfd_symbol_reloc_link_order);
5330 r_extern = 1;
5331 h = aout_link_hash_lookup (aout_hash_table (finfo->info),
5332 pr->u.name, false, false, true);
5333 if (h != (struct aout_link_hash_entry *) NULL
74942465 5334 && h->indx >= 0)
ec099b4b 5335 r_index = h->indx;
74942465
ILT		 5336 else if (h != NULL)
5337 {
5338 /* We decided to strip this symbol, but it turns out that we
5339 can't. Note that we lose the other and desc information
5340 here. I don't think that will ever matter for a global
5341 symbol. */
5342 h->indx = -2;
5343 h->written = false;
5344 if (! aout_link_write_other_symbol (h, (PTR) finfo))
5345 return false;
5346 r_index = h->indx;
5347 }
ec099b4b
ILT		 5348 else
5349 {
5350 if (! ((*finfo->info->callbacks->unattached_reloc)
5351 (finfo->info, pr->u.name, (bfd *) NULL,
5352 (asection *) NULL, (bfd_vma) 0)))
5353 return false;
5354 r_index = 0;
5355 }
5356 }
5357
5358 howto = bfd_reloc_type_lookup (finfo->output_bfd, pr->reloc);
82b1edf7 5359 if (howto == 0)
ec099b4b
ILT		 5360 {
5361 bfd_set_error (bfd_error_bad_value);
5362 return false;
5363 }
5364
5365 if (o == obj_textsec (finfo->output_bfd))
5366 reloff_ptr = &finfo->treloff;
5367 else if (o == obj_datasec (finfo->output_bfd))
5368 reloff_ptr = &finfo->dreloff;
5369 else
5370 abort ();
5371
5372 if (obj_reloc_entry_size (finfo->output_bfd) == RELOC_STD_SIZE)
5373 {
f42fe159 5374#ifdef MY_put_reloc
ae115e51
ILT		 5375 MY_put_reloc(finfo->output_bfd, r_extern, r_index, p->offset, howto,
5376 &srel);
f42fe159 5377#else
ae115e51
ILT		 5378 {
5379 int r_pcrel;
5380 int r_baserel;
5381 int r_jmptable;
5382 int r_relative;
5383 int r_length;
5384
5385 r_pcrel = howto->pc_relative;
5386 r_baserel = (howto->type & 8) != 0;
5387 r_jmptable = (howto->type & 16) != 0;
5388 r_relative = (howto->type & 32) != 0;
5389 r_length = howto->size;
5390
5391 PUT_WORD (finfo->output_bfd, p->offset, srel.r_address);
5392 if (finfo->output_bfd->xvec->header_byteorder_big_p)
5393 {
5394 srel.r_index[0] = r_index >> 16;
5395 srel.r_index[1] = r_index >> 8;
5396 srel.r_index[2] = r_index;
5397 srel.r_type[0] =
5398 ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0)
5399 | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0)
5400 | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0)
5401 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0)
5402 | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0)
5403 | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG));
5404 }
5405 else
5406 {
5407 srel.r_index[2] = r_index >> 16;
5408 srel.r_index[1] = r_index >> 8;
5409 srel.r_index[0] = r_index;
5410 srel.r_type[0] =
5411 ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0)
5412 | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0)
5413 | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0)
5414 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0)
5415 | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0)
5416 | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE));
5417 }
5418 }
f42fe159 5419#endif
ec099b4b
ILT		 5420 rel_ptr = (PTR) &srel;
5421
5422 /* We have to write the addend into the object file, since
5423 standard a.out relocs are in place. It would be more
5424 reliable if we had the current contents of the file here,
5425 rather than assuming zeroes, but we can't read the file since
5426 it was opened using bfd_openw. */
5427 if (pr->addend != 0)
5428 {
5429 bfd_size_type size;
5430 bfd_reloc_status_type r;
5431 bfd_byte *buf;
5432 boolean ok;
5433
5434 size = bfd_get_reloc_size (howto);
e85e8bfe 5435 buf = (bfd_byte *) bfd_zmalloc (size);
ec099b4b 5436 if (buf == (bfd_byte *) NULL)
a9713b91 5437 return false;
34e9ffbc 5438 r = MY_relocate_contents (howto, finfo->output_bfd,
ec099b4b
ILT		 5439 pr->addend, buf);
5440 switch (r)
5441 {
5442 case bfd_reloc_ok:
5443 break;
5444 default:
5445 case bfd_reloc_outofrange:
5446 abort ();
5447 case bfd_reloc_overflow:
5448 if (! ((*finfo->info->callbacks->reloc_overflow)
5449 (finfo->info,
5450 (p->type == bfd_section_reloc_link_order
5451 ? bfd_section_name (finfo->output_bfd,
5452 pr->u.section)
5453 : pr->u.name),
5454 howto->name, pr->addend, (bfd *) NULL,
5455 (asection *) NULL, (bfd_vma) 0)))
5456 {
5457 free (buf);
5458 return false;
5459 }
5460 break;
5461 }
5462 ok = bfd_set_section_contents (finfo->output_bfd, o,
5463 (PTR) buf,
5464 (file_ptr) p->offset,
5465 size);
5466 free (buf);
5467 if (! ok)
5468 return false;
5469 }
5470 }
5471 else
5472 {
5473 PUT_WORD (finfo->output_bfd, p->offset, erel.r_address);
5474
5475 if (finfo->output_bfd->xvec->header_byteorder_big_p)
5476 {
5477 erel.r_index[0] = r_index >> 16;
5478 erel.r_index[1] = r_index >> 8;
5479 erel.r_index[2] = r_index;
5480 erel.r_type[0] =
5481 ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0)
5482 | (howto->type << RELOC_EXT_BITS_TYPE_SH_BIG));
5483 }
5484 else
5485 {
5486 erel.r_index[2] = r_index >> 16;
5487 erel.r_index[1] = r_index >> 8;
5488 erel.r_index[0] = r_index;
5489 erel.r_type[0] =
5490 (r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0)
5491 | (howto->type << RELOC_EXT_BITS_TYPE_SH_LITTLE);
5492 }
5493
5494 PUT_WORD (finfo->output_bfd, pr->addend, erel.r_addend);
5495
5496 rel_ptr = (PTR) &erel;
5497 }
5498
5499 if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0
5500 || (bfd_write (rel_ptr, (bfd_size_type) 1,
5501 obj_reloc_entry_size (finfo->output_bfd),
5502 finfo->output_bfd)
5503 != obj_reloc_entry_size (finfo->output_bfd)))
5504 return false;
5505
5506 *reloff_ptr += obj_reloc_entry_size (finfo->output_bfd);
5507
5508 /* Assert that the relocs have not run into the symbols, and that n
5509 the text relocs have not run into the data relocs. */
5510 BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd)
5511 && (reloff_ptr != &finfo->treloff
5512 || (*reloff_ptr
5513 <= obj_datasec (finfo->output_bfd)->rel_filepos)));
5514
5515 return true;
5516}
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