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* coffgen.c (coff_bfd_make_debug_symbol): Improve comment.
[deliverable/binutils-gdb.git] / bfd / aoutx.h
CommitLineData
1f29e30b 1/* BFD semi-generic back-end for a.out binaries.
f7e68463 2 Copyright 1990, 91, 92, 93, 94, 95, 1996 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),
20ab764e 197 HOWTO(RELOC_BASE10, 0, 2, 10, false, 0, complain_overflow_dont,0,"BASE10", false, 0,0x000003ff, false),
2e235c93 198 HOWTO(RELOC_BASE13, 0, 2, 13, false, 0, complain_overflow_bitfield,0,"BASE13", false, 0,0x00001fff, false),
20ab764e 199 HOWTO(RELOC_BASE22, 10, 2, 22, false, 0, complain_overflow_bitfield,0,"BASE22", false, 0,0x003fffff, 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. */
64d5f5d0
ILT		 601 if (abfd->iostream != NULL
602 && (abfd->flags & BFD_IN_MEMORY) == 0
6c97aedf
ILT		 603 && (fstat(fileno((FILE *) (abfd->iostream)), &stat_buf) == 0)
604 && ((stat_buf.st_mode & 0111) != 0))
605 abfd->flags |= EXEC_P;
606 }
607#endif /* STAT_FOR_EXEC */
608
214f8f23
KR		 609 if (result)
610 {
1f29e30b 611#if 0 /* These should be set correctly anyways. */
214f8f23
KR		 612 abfd->sections = obj_textsec (abfd);
613 obj_textsec (abfd)->next = obj_datasec (abfd);
614 obj_datasec (abfd)->next = obj_bsssec (abfd);
1f29e30b 615#endif
214f8f23
KR		 616 }
617 else
618 {
619 free (rawptr);
620 abfd->tdata.aout_data = oldrawptr;
621 }
e6e265ce 622 return result;
7ed4093a
SC		 623}
624
4e41b5aa
SC		 625/*
626FUNCTION
c188b0be 627 aout_@var{size}_mkobject
6f715d66 628
fa2b89f1 629SYNOPSIS
c188b0be
DM		 630 boolean aout_@var{size}_mkobject, (bfd *abfd);
631
632DESCRIPTION
633 Initialize BFD @var{abfd} for use with a.out files.
6f715d66 634*/
7ed4093a
SC		 635
636boolean
8eb5d4be
JK		 637NAME(aout,mkobject) (abfd)
638 bfd *abfd;
7ed4093a 639{
6db82ea7 640 struct aout_data_struct *rawptr;
7ed4093a 641
68241b2b 642 bfd_set_error (bfd_error_system_call);
7ed4093a
SC		 643
644 /* Use an intermediate variable for clarity */
2e235c93 645 rawptr = (struct aout_data_struct *)bfd_zalloc (abfd, sizeof (struct aout_data_struct ));
c188b0be 646
a9713b91 647 if (rawptr == NULL)
7ed4093a 648 return false;
c188b0be 649
6db82ea7 650 abfd->tdata.aout_data = rawptr;
7ed4093a 651 exec_hdr (abfd) = &(rawptr->e);
c188b0be 652
7ed4093a
SC		 653 obj_textsec (abfd) = (asection *)NULL;
654 obj_datasec (abfd) = (asection *)NULL;
655 obj_bsssec (abfd) = (asection *)NULL;
c188b0be 656
7ed4093a
SC		 657 return true;
658}
659
6f715d66 660
4e41b5aa
SC		 661/*
662FUNCTION
c188b0be
DM		 663 aout_@var{size}_machine_type
664
665SYNOPSIS
666 enum machine_type aout_@var{size}_machine_type
667 (enum bfd_architecture arch,
668 unsigned long machine));
6f715d66 669
4e41b5aa
SC		 670DESCRIPTION
671 Keep track of machine architecture and machine type for
c188b0be
DM		 672 a.out's. Return the <<machine_type>> for a particular
673 architecture and machine, or <<M_UNKNOWN>> if that exact architecture
674 and machine can't be represented in a.out format.
7ed4093a 675
4e41b5aa 676 If the architecture is understood, machine type 0 (default)
c188b0be 677 is always understood.
6f715d66 678*/
7ed4093a
SC		 679
680enum machine_type
9ae74960 681NAME(aout,machine_type) (arch, machine, unknown)
8eb5d4be
JK		 682 enum bfd_architecture arch;
683 unsigned long machine;
9ae74960 684 boolean *unknown;
7ed4093a
SC		 685{
686 enum machine_type arch_flags;
c188b0be 687
7ed4093a 688 arch_flags = M_UNKNOWN;
9ae74960 689 *unknown = true;
c188b0be 690
7ed4093a
SC		 691 switch (arch) {
692 case bfd_arch_sparc:
ae115e51
ILT		 693 if (machine == 0
694 || machine == bfd_mach_sparc
c189fdfb 695 || machine == bfd_mach_sparc_v9)
ae115e51 696 arch_flags = M_SPARC;
7ed4093a 697 break;
c188b0be 698
7ed4093a
SC		 699 case bfd_arch_m68k:
700 switch (machine) {
701 case 0: arch_flags = M_68010; break;
9ae74960 702 case 68000: arch_flags = M_UNKNOWN; *unknown = false; break;
7ed4093a
SC		 703 case 68010: arch_flags = M_68010; break;
704 case 68020: arch_flags = M_68020; break;
705 default: arch_flags = M_UNKNOWN; break;
706 }
707 break;
c188b0be 708
7ed4093a
SC		 709 case bfd_arch_i386:
710 if (machine == 0) arch_flags = M_386;
711 break;
c188b0be 712
7ed4093a
SC		 713 case bfd_arch_a29k:
714 if (machine == 0) arch_flags = M_29K;
715 break;
c188b0be 716
204ba9e3
ILT		 717 case bfd_arch_arm:
718 if (machine == 0) arch_flags = M_ARM;
719 break;
720
5cd3dcff
KR		 721 case bfd_arch_mips:
722 switch (machine) {
723 case 0:
724 case 2000:
725 case 3000: arch_flags = M_MIPS1; break;
943fbd5b 726 case 4000: /* mips3 */
5cd3dcff 727 case 4400:
943fbd5b
KR		 728 case 8000: /* mips4 */
729 /* real mips2: */
5cd3dcff
KR		 730 case 6000: arch_flags = M_MIPS2; break;
731 default: arch_flags = M_UNKNOWN; break;
732 }
733 break;
734
f42fe159
ILT		 735 case bfd_arch_ns32k:
736 switch (machine) {
737 case 0: arch_flags = M_NS32532; break;
738 case 32032: arch_flags = M_NS32032; break;
739 case 32532: arch_flags = M_NS32532; break;
740 default: arch_flags = M_UNKNOWN; break;
741 }
742 break;
743
82b1edf7
KR		 744 case bfd_arch_vax:
745 *unknown = false;
746 break;
747
748 /* start-sanitize-rce */
749 case bfd_arch_rce:
750 arch_flags = M_RCE;
751 break;
752 /* end-sanitize-rce */
753
7ed4093a
SC		 754 default:
755 arch_flags = M_UNKNOWN;
7ed4093a 756 }
9ae74960
ILT		 757
758 if (arch_flags != M_UNKNOWN)
759 *unknown = false;
760
7ed4093a
SC		 761 return arch_flags;
762}
763
9e2dad8e 764
4e41b5aa
SC		 765/*
766FUNCTION
c188b0be 767 aout_@var{size}_set_arch_mach
6f715d66 768
fa2b89f1 769SYNOPSIS
c188b0be 770 boolean aout_@var{size}_set_arch_mach,
6f715d66 771 (bfd *,
c188b0be 772 enum bfd_architecture arch,
6f715d66 773 unsigned long machine));
c188b0be
DM		 774
775DESCRIPTION
776 Set the architecture and the machine of the BFD @var{abfd} to the
777 values @var{arch} and @var{machine}. Verify that @var{abfd}'s format
778 can support the architecture required.
6f715d66
SC		 779*/
780
7ed4093a 781boolean
8eb5d4be
JK		 782NAME(aout,set_arch_mach) (abfd, arch, machine)
783 bfd *abfd;
784 enum bfd_architecture arch;
785 unsigned long machine;
7ed4093a 786{
2e235c93
ILT		 787 if (! bfd_default_set_arch_mach (abfd, arch, machine))
788 return false;
789
9ae74960
ILT		 790 if (arch != bfd_arch_unknown)
791 {
792 boolean unknown;
793
794 NAME(aout,machine_type) (arch, machine, &unknown);
795 if (unknown)
796 return false;
797 }
ce07dd7c 798
214f8f23
KR		 799 /* Determine the size of a relocation entry */
800 switch (arch) {
801 case bfd_arch_sparc:
802 case bfd_arch_a29k:
5cd3dcff 803 case bfd_arch_mips:
214f8f23
KR		 804 obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE;
805 break;
806 default:
807 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
808 break;
809 }
810
2768b3f7 811 return (*aout_backend_info(abfd)->set_sizes) (abfd);
7ed4093a 812}
7ed4093a 813
4c3721d5
ILT		 814static void
815adjust_o_magic (abfd, execp)
816 bfd *abfd;
817 struct internal_exec *execp;
818{
819 file_ptr pos = adata (abfd).exec_bytes_size;
820 bfd_vma vma = 0;
821 int pad = 0;
822
823 /* Text. */
824 obj_textsec(abfd)->filepos = pos;
74942465
ILT		 825 if (!obj_textsec(abfd)->user_set_vma)
826 obj_textsec(abfd)->vma = vma;
827 else
828 vma = obj_textsec(abfd)->vma;
829
4c3721d5
ILT		 830 pos += obj_textsec(abfd)->_raw_size;
831 vma += obj_textsec(abfd)->_raw_size;
832
833 /* Data. */
834 if (!obj_datasec(abfd)->user_set_vma)
835 {
836#if 0 /* ?? Does alignment in the file image really matter? */
837 pad = align_power (vma, obj_datasec(abfd)->alignment_power) - vma;
838#endif
839 obj_textsec(abfd)->_raw_size += pad;
840 pos += pad;
841 vma += pad;
842 obj_datasec(abfd)->vma = vma;
843 }
82b1edf7
KR		 844 else
845 vma = obj_datasec(abfd)->vma;
4c3721d5
ILT		 846 obj_datasec(abfd)->filepos = pos;
847 pos += obj_datasec(abfd)->_raw_size;
848 vma += obj_datasec(abfd)->_raw_size;
849
850 /* BSS. */
851 if (!obj_bsssec(abfd)->user_set_vma)
852 {
853#if 0
854 pad = align_power (vma, obj_bsssec(abfd)->alignment_power) - vma;
855#endif
856 obj_datasec(abfd)->_raw_size += pad;
857 pos += pad;
858 vma += pad;
859 obj_bsssec(abfd)->vma = vma;
860 }
f4945271
ILT		 861 else
862 {
863 /* The VMA of the .bss section is set by the the VMA of the
864 .data section plus the size of the .data section. We may
865 need to add padding bytes to make this true. */
866 pad = obj_bsssec (abfd)->vma - vma;
867 if (pad > 0)
868 {
869 obj_datasec (abfd)->_raw_size += pad;
870 pos += pad;
871 }
872 }
4c3721d5
ILT		 873 obj_bsssec(abfd)->filepos = pos;
874
875 /* Fix up the exec header. */
876 execp->a_text = obj_textsec(abfd)->_raw_size;
877 execp->a_data = obj_datasec(abfd)->_raw_size;
878 execp->a_bss = obj_bsssec(abfd)->_raw_size;
879 N_SET_MAGIC (*execp, OMAGIC);
880}
881
882static void
883adjust_z_magic (abfd, execp)
884 bfd *abfd;
885 struct internal_exec *execp;
886{
887 bfd_size_type data_pad, text_pad;
888 file_ptr text_end;
889 CONST struct aout_backend_data *abdp;
890 int ztih; /* Nonzero if text includes exec header. */
4c3721d5
ILT		 891
892 abdp = aout_backend_info (abfd);
893
894 /* Text. */
0630aba5
ILT		 895 ztih = (abdp != NULL
896 && (abdp->text_includes_header
897 || obj_aout_subformat (abfd) == q_magic_format));
4c3721d5
ILT		 898 obj_textsec(abfd)->filepos = (ztih
899 ? adata(abfd).exec_bytes_size
0630aba5 900 : adata(abfd).zmagic_disk_block_size);
4c3721d5 901 if (! obj_textsec(abfd)->user_set_vma)
e1f99f60
ILT		 902 {
903 /* ?? Do we really need to check for relocs here? */
904 obj_textsec(abfd)->vma = ((abfd->flags & HAS_RELOC)
905 ? 0
906 : (ztih
907 ? (abdp->default_text_vma
908 + adata(abfd).exec_bytes_size)
909 : abdp->default_text_vma));
910 text_pad = 0;
911 }
912 else
913 {
914 /* The .text section is being loaded at an unusual address. We
915 may need to pad it such that the .data section starts at a page
916 boundary. */
917 if (ztih)
918 text_pad = ((obj_textsec (abfd)->filepos - obj_textsec (abfd)->vma)
919 & (adata (abfd).page_size - 1));
920 else
921 text_pad = ((- obj_textsec (abfd)->vma)
922 & (adata (abfd).page_size - 1));
923 }
924
4c3721d5 925 /* Find start of data. */
0630aba5
ILT		 926 if (ztih)
927 {
928 text_end = obj_textsec (abfd)->filepos + obj_textsec (abfd)->_raw_size;
e1f99f60 929 text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end;
0630aba5
ILT		 930 }
931 else
932 {
933 /* Note that if page_size == zmagic_disk_block_size, then
934 filepos == page_size, and this case is the same as the ztih
935 case. */
936 text_end = obj_textsec (abfd)->_raw_size;
e1f99f60 937 text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end;
0630aba5
ILT		 938 text_end += obj_textsec (abfd)->filepos;
939 }
4c3721d5
ILT		 940 obj_textsec(abfd)->_raw_size += text_pad;
941 text_end += text_pad;
942
943 /* Data. */
944 if (!obj_datasec(abfd)->user_set_vma)
945 {
946 bfd_vma vma;
947 vma = obj_textsec(abfd)->vma + obj_textsec(abfd)->_raw_size;
948 obj_datasec(abfd)->vma = BFD_ALIGN (vma, adata(abfd).segment_size);
949 }
4c3721d5
ILT		 950 if (abdp && abdp->zmagic_mapped_contiguous)
951 {
952 text_pad = (obj_datasec(abfd)->vma
953 - obj_textsec(abfd)->vma
954 - obj_textsec(abfd)->_raw_size);
955 obj_textsec(abfd)->_raw_size += text_pad;
956 }
957 obj_datasec(abfd)->filepos = (obj_textsec(abfd)->filepos
958 + obj_textsec(abfd)->_raw_size);
959
960 /* Fix up exec header while we're at it. */
961 execp->a_text = obj_textsec(abfd)->_raw_size;
962 if (ztih && (!abdp || (abdp && !abdp->exec_header_not_counted)))
963 execp->a_text += adata(abfd).exec_bytes_size;
f5419a59
ILT		 964 if (obj_aout_subformat (abfd) == q_magic_format)
965 N_SET_MAGIC (*execp, QMAGIC);
966 else
967 N_SET_MAGIC (*execp, ZMAGIC);
5330499f 968
4c3721d5 969 /* Spec says data section should be rounded up to page boundary. */
4c3721d5
ILT		 970 obj_datasec(abfd)->_raw_size
971 = align_power (obj_datasec(abfd)->_raw_size,
972 obj_bsssec(abfd)->alignment_power);
973 execp->a_data = BFD_ALIGN (obj_datasec(abfd)->_raw_size,
974 adata(abfd).page_size);
975 data_pad = execp->a_data - obj_datasec(abfd)->_raw_size;
976
977 /* BSS. */
978 if (!obj_bsssec(abfd)->user_set_vma)
979 obj_bsssec(abfd)->vma = (obj_datasec(abfd)->vma
980 + obj_datasec(abfd)->_raw_size);
5330499f
DM		 981 /* If the BSS immediately follows the data section and extra space
982 in the page is left after the data section, fudge data
983 in the header so that the bss section looks smaller by that
984 amount. We'll start the bss section there, and lie to the OS.
985 (Note that a linker script, as well as the above assignment,
986 could have explicitly set the BSS vma to immediately follow
987 the data section.) */
988 if (align_power (obj_bsssec(abfd)->vma, obj_bsssec(abfd)->alignment_power)
989 == obj_datasec(abfd)->vma + obj_datasec(abfd)->_raw_size)
990 execp->a_bss = (data_pad > obj_bsssec(abfd)->_raw_size) ? 0 :
991 obj_bsssec(abfd)->_raw_size - data_pad;
992 else
993 execp->a_bss = obj_bsssec(abfd)->_raw_size;
4c3721d5
ILT		 994}
995
996static void
997adjust_n_magic (abfd, execp)
998 bfd *abfd;
999 struct internal_exec *execp;
1000{
1001 file_ptr pos = adata(abfd).exec_bytes_size;
1002 bfd_vma vma = 0;
1003 int pad;
1004
1005 /* Text. */
1006 obj_textsec(abfd)->filepos = pos;
1007 if (!obj_textsec(abfd)->user_set_vma)
1008 obj_textsec(abfd)->vma = vma;
1009 else
1010 vma = obj_textsec(abfd)->vma;
1011 pos += obj_textsec(abfd)->_raw_size;
1012 vma += obj_textsec(abfd)->_raw_size;
1013
1014 /* Data. */
1015 obj_datasec(abfd)->filepos = pos;
1016 if (!obj_datasec(abfd)->user_set_vma)
1017 obj_datasec(abfd)->vma = BFD_ALIGN (vma, adata(abfd).segment_size);
1018 vma = obj_datasec(abfd)->vma;
1019
1020 /* Since BSS follows data immediately, see if it needs alignment. */
1021 vma += obj_datasec(abfd)->_raw_size;
1022 pad = align_power (vma, obj_bsssec(abfd)->alignment_power) - vma;
1023 obj_datasec(abfd)->_raw_size += pad;
1024 pos += obj_datasec(abfd)->_raw_size;
1025
1026 /* BSS. */
1027 if (!obj_bsssec(abfd)->user_set_vma)
1028 obj_bsssec(abfd)->vma = vma;
1029 else
1030 vma = obj_bsssec(abfd)->vma;
1031
1032 /* Fix up exec header. */
1033 execp->a_text = obj_textsec(abfd)->_raw_size;
1034 execp->a_data = obj_datasec(abfd)->_raw_size;
1035 execp->a_bss = obj_bsssec(abfd)->_raw_size;
1036 N_SET_MAGIC (*execp, NMAGIC);
1037}
1038
ce07dd7c 1039boolean
8eb5d4be
JK		 1040NAME(aout,adjust_sizes_and_vmas) (abfd, text_size, text_end)
1041 bfd *abfd;
1042 bfd_size_type *text_size;
1043 file_ptr *text_end;
ce07dd7c
KR		 1044{
1045 struct internal_exec *execp = exec_hdr (abfd);
4c3721d5 1046
ec6b18c4
ILT		 1047 if (! NAME(aout,make_sections) (abfd))
1048 return false;
1049
f5419a59
ILT		 1050 if (adata(abfd).magic != undecided_magic)
1051 return true;
4c3721d5 1052
c188b0be 1053 obj_textsec(abfd)->_raw_size =
ce07dd7c
KR		 1054 align_power(obj_textsec(abfd)->_raw_size,
1055 obj_textsec(abfd)->alignment_power);
1056
1057 *text_size = obj_textsec (abfd)->_raw_size;
1058 /* Rule (heuristic) for when to pad to a new page. Note that there
4c3721d5
ILT		 1059 are (at least) two ways demand-paged (ZMAGIC) files have been
1060 handled. Most Berkeley-based systems start the text segment at
34e9ffbc 1061 (TARGET_PAGE_SIZE). However, newer versions of SUNOS start the text
4c3721d5
ILT		 1062 segment right after the exec header; the latter is counted in the
1063 text segment size, and is paged in by the kernel with the rest of
1064 the text. */
ce07dd7c
KR		 1065
1066 /* This perhaps isn't the right way to do this, but made it simpler for me
1067 to understand enough to implement it. Better would probably be to go
1068 right from BFD flags to alignment/positioning characteristics. But the
1069 old code was sloppy enough about handling the flags, and had enough
1070 other magic, that it was a little hard for me to understand. I think
1071 I understand it better now, but I haven't time to do the cleanup this
1072 minute. */
4c3721d5
ILT		 1073
1074 if (abfd->flags & D_PAGED)
1075 /* Whether or not WP_TEXT is set -- let D_PAGED override. */
4c3721d5
ILT		 1076 adata(abfd).magic = z_magic;
1077 else if (abfd->flags & WP_TEXT)
1078 adata(abfd).magic = n_magic;
1079 else
1080 adata(abfd).magic = o_magic;
ce07dd7c
KR		 1081
1082#ifdef BFD_AOUT_DEBUG /* requires gcc2 */
1083#if __GNUC__ >= 2
1084 fprintf (stderr, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n",
1085 ({ char *str;
1086 switch (adata(abfd).magic) {
1087 case n_magic: str = "NMAGIC"; break;
1088 case o_magic: str = "OMAGIC"; break;
1089 case z_magic: str = "ZMAGIC"; break;
1090 default: abort ();
1091 }
1092 str;
1093 }),
4c3721d5
ILT		 1094 obj_textsec(abfd)->vma, obj_textsec(abfd)->_raw_size,
1095 obj_textsec(abfd)->alignment_power,
1096 obj_datasec(abfd)->vma, obj_datasec(abfd)->_raw_size,
1097 obj_datasec(abfd)->alignment_power,
1098 obj_bsssec(abfd)->vma, obj_bsssec(abfd)->_raw_size,
1099 obj_bsssec(abfd)->alignment_power);
ce07dd7c
KR		 1100#endif
1101#endif
1102
1103 switch (adata(abfd).magic)
1104 {
1105 case o_magic:
4c3721d5 1106 adjust_o_magic (abfd, execp);
ce07dd7c
KR		 1107 break;
1108 case z_magic:
4c3721d5 1109 adjust_z_magic (abfd, execp);
ce07dd7c
KR		 1110 break;
1111 case n_magic:
4c3721d5 1112 adjust_n_magic (abfd, execp);
ce07dd7c
KR		 1113 break;
1114 default:
1115 abort ();
1116 }
4c3721d5 1117
ce07dd7c
KR		 1118#ifdef BFD_AOUT_DEBUG
1119 fprintf (stderr, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n",
4c3721d5
ILT		 1120 obj_textsec(abfd)->vma, obj_textsec(abfd)->_raw_size,
1121 obj_textsec(abfd)->filepos,
1122 obj_datasec(abfd)->vma, obj_datasec(abfd)->_raw_size,
1123 obj_datasec(abfd)->filepos,
ce07dd7c
KR		 1124 obj_bsssec(abfd)->vma, obj_bsssec(abfd)->_raw_size);
1125#endif
4c3721d5 1126
d047d16a 1127 return true;
ce07dd7c
KR		 1128}
1129
4e41b5aa
SC		 1130/*
1131FUNCTION
c188b0be 1132 aout_@var{size}_new_section_hook
4e41b5aa 1133
fa2b89f1 1134SYNOPSIS
c188b0be 1135 boolean aout_@var{size}_new_section_hook,
9e2dad8e
JG		 1136 (bfd *abfd,
1137 asection *newsect));
c188b0be
DM		 1138
1139DESCRIPTION
1140 Called by the BFD in response to a @code{bfd_make_section}
1141 request.
6f715d66 1142*/
7ed4093a 1143boolean
8eb5d4be
JK		 1144NAME(aout,new_section_hook) (abfd, newsect)
1145 bfd *abfd;
1146 asection *newsect;
7ed4093a 1147{
6db82ea7
SC		 1148 /* align to double at least */
1149 newsect->alignment_power = bfd_get_arch_info(abfd)->section_align_power;
3f7607af 1150
c188b0be
DM		 1151
1152 if (bfd_get_format (abfd) == bfd_object)
6db82ea7
SC		 1153 {
1154 if (obj_textsec(abfd) == NULL && !strcmp(newsect->name, ".text")) {
1155 obj_textsec(abfd)= newsect;
e48f985c 1156 newsect->target_index = N_TEXT;
6db82ea7
SC		 1157 return true;
1158 }
c188b0be 1159
6db82ea7
SC		 1160 if (obj_datasec(abfd) == NULL && !strcmp(newsect->name, ".data")) {
1161 obj_datasec(abfd) = newsect;
e48f985c 1162 newsect->target_index = N_DATA;
6db82ea7
SC		 1163 return true;
1164 }
c188b0be 1165
6db82ea7
SC		 1166 if (obj_bsssec(abfd) == NULL && !strcmp(newsect->name, ".bss")) {
1167 obj_bsssec(abfd) = newsect;
e48f985c 1168 newsect->target_index = N_BSS;
6db82ea7
SC		 1169 return true;
1170 }
1171
1172 }
c188b0be 1173
6db82ea7
SC		 1174 /* We allow more than three sections internally */
1175 return true;
7ed4093a
SC		 1176}
1177
1178boolean
8eb5d4be
JK		 1179NAME(aout,set_section_contents) (abfd, section, location, offset, count)
1180 bfd *abfd;
1181 sec_ptr section;
1182 PTR location;
1183 file_ptr offset;
1184 bfd_size_type count;
7ed4093a 1185{
7b02b4ed 1186 file_ptr text_end;
7b02b4ed 1187 bfd_size_type text_size;
ce07dd7c 1188
773033d2
ILT		 1189 if (! abfd->output_has_begun)
1190 {
1191 if (! NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end))
1192 return false;
1193 }
12e7087f 1194
773033d2
ILT		 1195 if (section == obj_bsssec (abfd))
1196 {
1197 bfd_set_error (bfd_error_no_contents);
1198 return false;
1199 }
1200
1201 if (section != obj_textsec (abfd)
1202 && section != obj_datasec (abfd))
1203 {
a1774c51
ILT		 1204 (*_bfd_error_handler)
1205 ("%s: can not represent section `%s' in a.out object file format",
1206 bfd_get_filename (abfd), bfd_get_section_name (abfd, section));
773033d2
ILT		 1207 bfd_set_error (bfd_error_nonrepresentable_section);
1208 return false;
1209 }
1210
1211 if (count != 0)
1212 {
1213 if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0
1214 || bfd_write (location, 1, count, abfd) != count)
1215 return false;
1216 }
c188b0be 1217
7ed4093a
SC		 1218 return true;
1219}
1220\f
5c8444f8
ILT		 1221/* Read the external symbols from an a.out file. */
1222
1223static boolean
1224aout_get_external_symbols (abfd)
1225 bfd *abfd;
1226{
1227 if (obj_aout_external_syms (abfd) == (struct external_nlist *) NULL)
1228 {
1229 bfd_size_type count;
1230 struct external_nlist *syms;
1231
1232 count = exec_hdr (abfd)->a_syms / EXTERNAL_NLIST_SIZE;
1233
7ac84736 1234#ifdef USE_MMAP
4fe6d901
KR		 1235 if (bfd_get_file_window (abfd,
1236 obj_sym_filepos (abfd), exec_hdr (abfd)->a_syms,
0bb8ff19 1237 &obj_aout_sym_window (abfd), true) == false)
4fe6d901
KR		 1238 return false;
1239 syms = (struct external_nlist *) obj_aout_sym_window (abfd).data;
7ac84736
KR		 1240#else
1241 /* We allocate using malloc to make the values easy to free
1242 later on. If we put them on the obstack it might not be
1243 possible to free them. */
1244 syms = ((struct external_nlist *)
58142f10 1245 bfd_malloc ((size_t) count * EXTERNAL_NLIST_SIZE));
7ac84736 1246 if (syms == (struct external_nlist *) NULL && count != 0)
58142f10 1247 return false;
7ac84736
KR		 1248
1249 if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
1250 || (bfd_read (syms, 1, exec_hdr (abfd)->a_syms, abfd)
1251 != exec_hdr (abfd)->a_syms))
1252 {
1253 free (syms);
1254 return false;
1255 }
1256#endif
5c8444f8
ILT		 1257
1258 obj_aout_external_syms (abfd) = syms;
1259 obj_aout_external_sym_count (abfd) = count;
1260 }
1261
4f019d04
ILT		 1262 if (obj_aout_external_strings (abfd) == NULL
1263 && exec_hdr (abfd)->a_syms != 0)
5c8444f8
ILT		 1264 {
1265 unsigned char string_chars[BYTES_IN_WORD];
1266 bfd_size_type stringsize;
1267 char *strings;
1268
1269 /* Get the size of the strings. */
1270 if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0
1271 || (bfd_read ((PTR) string_chars, BYTES_IN_WORD, 1, abfd)
1272 != BYTES_IN_WORD))
1273 return false;
1274 stringsize = GET_WORD (abfd, string_chars);
1275
7ac84736 1276#ifdef USE_MMAP
4fe6d901 1277 if (bfd_get_file_window (abfd, obj_str_filepos (abfd), stringsize,
0bb8ff19 1278 &obj_aout_string_window (abfd), true) == false)
4fe6d901
KR		 1279 return false;
1280 strings = (char *) obj_aout_string_window (abfd).data;
7ac84736 1281#else
58142f10 1282 strings = (char *) bfd_malloc ((size_t) stringsize + 1);
7ac84736 1283 if (strings == NULL)
58142f10 1284 return false;
7ac84736
KR		 1285
1286 /* Skip space for the string count in the buffer for convenience
1287 when using indexes. */
1288 if (bfd_read (strings + BYTES_IN_WORD, 1, stringsize - BYTES_IN_WORD,
1289 abfd)
1290 != stringsize - BYTES_IN_WORD)
1291 {
1292 free (strings);
1293 return false;
1294 }
1295#endif
5c8444f8 1296
1afd2380
ILT		 1297 /* Ensure that a zero index yields an empty string. */
1298 strings[0] = '\0';
1299
7ac84736 1300 strings[stringsize - 1] = 0;
5c8444f8
ILT		 1301
1302 obj_aout_external_strings (abfd) = strings;
1303 obj_aout_external_string_size (abfd) = stringsize;
1304 }
1305
1306 return true;
1307}
1308
4298e311
ILT		 1309/* Translate an a.out symbol into a BFD symbol. The desc, other, type
1310 and symbol->value fields of CACHE_PTR will be set from the a.out
1311 nlist structure. This function is responsible for setting
1312 symbol->flags and symbol->section, and adjusting symbol->value. */
c188b0be 1313
9783e04a 1314static boolean
4298e311
ILT		 1315translate_from_native_sym_flags (abfd, cache_ptr)
1316 bfd *abfd;
1317 aout_symbol_type *cache_ptr;
9e2dad8e 1318{
4298e311
ILT		 1319 flagword visible;
1320
1321 if ((cache_ptr->type & N_STAB) != 0
1322 || cache_ptr->type == N_FN)
1323 {
1324 asection *sec;
1325
1326 /* This is a debugging symbol. */
1327
1328 cache_ptr->symbol.flags = BSF_DEBUGGING;
1329
1330 /* Work out the symbol section. */
1331 switch (cache_ptr->type & N_TYPE)
1332 {
1333 case N_TEXT:
1334 case N_FN:
1335 sec = obj_textsec (abfd);
1336 break;
1337 case N_DATA:
1338 sec = obj_datasec (abfd);
1339 break;
1340 case N_BSS:
1341 sec = obj_bsssec (abfd);
1342 break;
1343 default:
1344 case N_ABS:
4587b578 1345 sec = bfd_abs_section_ptr;
4298e311
ILT		 1346 break;
1347 }
1348
1349 cache_ptr->symbol.section = sec;
1350 cache_ptr->symbol.value -= sec->vma;
1351
1352 return true;
1353 }
1354
1355 /* Get the default visibility. This does not apply to all types, so
1356 we just hold it in a local variable to use if wanted. */
1357 if ((cache_ptr->type & N_EXT) == 0)
1358 visible = BSF_LOCAL;
1359 else
1360 visible = BSF_GLOBAL;
1361
1362 switch (cache_ptr->type)
6db82ea7 1363 {
4298e311
ILT		 1364 default:
1365 case N_ABS: case N_ABS | N_EXT:
4587b578 1366 cache_ptr->symbol.section = bfd_abs_section_ptr;
4298e311
ILT		 1367 cache_ptr->symbol.flags = visible;
1368 break;
1369
1370 case N_UNDF | N_EXT:
1371 if (cache_ptr->symbol.value != 0)
1372 {
1373 /* This is a common symbol. */
1374 cache_ptr->symbol.flags = BSF_GLOBAL;
4587b578 1375 cache_ptr->symbol.section = bfd_com_section_ptr;
4298e311
ILT		 1376 }
1377 else
1378 {
1379 cache_ptr->symbol.flags = 0;
4587b578 1380 cache_ptr->symbol.section = bfd_und_section_ptr;
4298e311
ILT		 1381 }
1382 break;
1383
1384 case N_TEXT: case N_TEXT | N_EXT:
1385 cache_ptr->symbol.section = obj_textsec (abfd);
1386 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1387 cache_ptr->symbol.flags = visible;
1388 break;
1389
2cd086e3
ILT		 1390 /* N_SETV symbols used to represent set vectors placed in the
1391 data section. They are no longer generated. Theoretically,
1392 it was possible to extract the entries and combine them with
1393 new ones, although I don't know if that was ever actually
1394 done. Unless that feature is restored, treat them as data
1395 symbols. */
1396 case N_SETV: case N_SETV | N_EXT:
4298e311
ILT		 1397 case N_DATA: case N_DATA | N_EXT:
1398 cache_ptr->symbol.section = obj_datasec (abfd);
1399 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1400 cache_ptr->symbol.flags = visible;
1401 break;
1402
1403 case N_BSS: case N_BSS | N_EXT:
1404 cache_ptr->symbol.section = obj_bsssec (abfd);
1405 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1406 cache_ptr->symbol.flags = visible;
1407 break;
1408
964affdc
DM		 1409 case N_SETA: case N_SETA | N_EXT:
1410 case N_SETT: case N_SETT | N_EXT:
1411 case N_SETD: case N_SETD | N_EXT:
1412 case N_SETB: case N_SETB | N_EXT:
ebd24135 1413 {
ebd24135 1414 asection *section;
4298e311 1415 arelent_chain *reloc;
ebd24135 1416 asection *into_section;
9783e04a 1417
4298e311
ILT		 1418 /* This is a set symbol. The name of the symbol is the name
1419 of the set (e.g., __CTOR_LIST__). The value of the symbol
1420 is the value to add to the set. We create a section with
1421 the same name as the symbol, and add a reloc to insert the
1422 appropriate value into the section.
1423
1424 This action is actually obsolete; it used to make the
1425 linker do the right thing, but the linker no longer uses
1426 this function. */
1427
1428 section = bfd_get_section_by_name (abfd, cache_ptr->symbol.name);
1429 if (section == NULL)
1430 {
1431 char *copy;
1432
1433 copy = bfd_alloc (abfd, strlen (cache_ptr->symbol.name) + 1);
1434 if (copy == NULL)
a9713b91 1435 return false;
4298e311
ILT		 1436
1437 strcpy (copy, cache_ptr->symbol.name);
1438 section = bfd_make_section (abfd, copy);
1439 if (section == NULL)
1440 return false;
1441 }
1442
1443 reloc = (arelent_chain *) bfd_alloc (abfd, sizeof (arelent_chain));
1444 if (reloc == NULL)
a9713b91 1445 return false;
9783e04a 1446
4298e311
ILT		 1447 /* Build a relocation entry for the constructor. */
1448 switch (cache_ptr->type & N_TYPE)
a99c3d70 1449 {
4298e311 1450 case N_SETA:
4587b578 1451 into_section = bfd_abs_section_ptr;
ebd24135
ILT		 1452 cache_ptr->type = N_ABS;
1453 break;
4298e311
ILT		 1454 case N_SETT:
1455 into_section = obj_textsec (abfd);
ebd24135
ILT		 1456 cache_ptr->type = N_TEXT;
1457 break;
4298e311
ILT		 1458 case N_SETD:
1459 into_section = obj_datasec (abfd);
ebd24135
ILT		 1460 cache_ptr->type = N_DATA;
1461 break;
4298e311
ILT		 1462 case N_SETB:
1463 into_section = obj_bsssec (abfd);
ebd24135
ILT		 1464 cache_ptr->type = N_BSS;
1465 break;
ebd24135 1466 }
88dfcd68 1467
4298e311
ILT		 1468 /* Build a relocation pointing into the constructor section
1469 pointing at the symbol in the set vector specified. */
ebd24135 1470 reloc->relent.addend = cache_ptr->symbol.value;
4298e311 1471 cache_ptr->symbol.section = into_section;
ebd24135 1472 reloc->relent.sym_ptr_ptr = into_section->symbol_ptr_ptr;
6db82ea7 1473
4298e311
ILT		 1474 /* We modify the symbol to belong to a section depending upon
1475 the name of the symbol, and add to the size of the section
1476 to contain a pointer to the symbol. Build a reloc entry to
1477 relocate to this symbol attached to this section. */
a8a916c8 1478 section->flags = SEC_CONSTRUCTOR | SEC_RELOC;
a99c3d70 1479
ebd24135
ILT		 1480 section->reloc_count++;
1481 section->alignment_power = 2;
a99c3d70 1482
ebd24135
ILT		 1483 reloc->next = section->constructor_chain;
1484 section->constructor_chain = reloc;
1485 reloc->relent.address = section->_raw_size;
4298e311
ILT		 1486 section->_raw_size += BYTES_IN_WORD;
1487
f42fe159 1488 reloc->relent.howto = CTOR_TABLE_RELOC_HOWTO(abfd);
a99c3d70 1489
ebd24135
ILT		 1490 cache_ptr->symbol.flags |= BSF_CONSTRUCTOR;
1491 }
1492 break;
0c205af2 1493
4298e311
ILT		 1494 case N_WARNING:
1495 /* This symbol is the text of a warning message. The next
1496 symbol is the symbol to associate the warning with. If a
1497 reference is made to that symbol, a warning is issued. */
1498 cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_WARNING;
4587b578 1499 cache_ptr->symbol.section = bfd_abs_section_ptr;
4298e311 1500 break;
ebd24135 1501
4298e311
ILT		 1502 case N_INDR: case N_INDR | N_EXT:
1503 /* An indirect symbol. This consists of two symbols in a row.
1504 The first symbol is the name of the indirection. The second
1505 symbol is the name of the target. A reference to the first
1506 symbol becomes a reference to the second. */
1507 cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_INDIRECT | visible;
4587b578 1508 cache_ptr->symbol.section = bfd_ind_section_ptr;
4298e311
ILT		 1509 break;
1510
1511 case N_WEAKU:
4587b578 1512 cache_ptr->symbol.section = bfd_und_section_ptr;
4298e311
ILT		 1513 cache_ptr->symbol.flags = BSF_WEAK;
1514 break;
1515
1516 case N_WEAKA:
4587b578 1517 cache_ptr->symbol.section = bfd_abs_section_ptr;
4298e311
ILT		 1518 cache_ptr->symbol.flags = BSF_WEAK;
1519 break;
1520
1521 case N_WEAKT:
1522 cache_ptr->symbol.section = obj_textsec (abfd);
1523 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1524 cache_ptr->symbol.flags = BSF_WEAK;
1525 break;
1526
1527 case N_WEAKD:
1528 cache_ptr->symbol.section = obj_datasec (abfd);
1529 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1530 cache_ptr->symbol.flags = BSF_WEAK;
1531 break;
1532
1533 case N_WEAKB:
1534 cache_ptr->symbol.section = obj_bsssec (abfd);
1535 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1536 cache_ptr->symbol.flags = BSF_WEAK;
1537 break;
a99c3d70 1538 }
4298e311 1539
9783e04a 1540 return true;
7ed4093a
SC		 1541}
1542
4298e311 1543/* Set the fields of SYM_POINTER according to CACHE_PTR. */
6db82ea7 1544
4c3721d5 1545static boolean
4298e311 1546translate_to_native_sym_flags (abfd, cache_ptr, sym_pointer)
8eb5d4be 1547 bfd *abfd;
4298e311
ILT		 1548 asymbol *cache_ptr;
1549 struct external_nlist *sym_pointer;
7ed4093a
SC		 1550{
1551 bfd_vma value = cache_ptr->value;
943fbd5b
KR		 1552 asection *sec;
1553 bfd_vma off;
7ed4093a 1554
4298e311
ILT		 1555 /* Mask out any existing type bits in case copying from one section
1556 to another. */
10dea9ed 1557 sym_pointer->e_type[0] &= ~N_TYPE;
a99c3d70 1558
943fbd5b
KR		 1559 sec = bfd_get_section (cache_ptr);
1560 off = 0;
1561
1562 if (sec == NULL)
4298e311 1563 {
943fbd5b
KR		 1564 /* This case occurs, e.g., for the *DEBUG* section of a COFF
1565 file. */
a1774c51
ILT		 1566 (*_bfd_error_handler)
1567 ("%s: can not represent section `%s' in a.out object file format",
1568 bfd_get_filename (abfd), bfd_get_section_name (abfd, sec));
4298e311
ILT		 1569 bfd_set_error (bfd_error_nonrepresentable_section);
1570 return false;
1571 }
943fbd5b
KR		 1572
1573 if (sec->output_section != NULL)
1574 {
1575 off = sec->output_offset;
1576 sec = sec->output_section;
1577 }
1578
1579 if (bfd_is_abs_section (sec))
1580 sym_pointer->e_type[0] |= N_ABS;
1581 else if (sec == obj_textsec (abfd))
1582 sym_pointer->e_type[0] |= N_TEXT;
1583 else if (sec == obj_datasec (abfd))
1584 sym_pointer->e_type[0] |= N_DATA;
1585 else if (sec == obj_bsssec (abfd))
1586 sym_pointer->e_type[0] |= N_BSS;
1587 else if (bfd_is_und_section (sec))
4587b578 1588 sym_pointer->e_type[0] = N_UNDF | N_EXT;
943fbd5b 1589 else if (bfd_is_ind_section (sec))
4587b578 1590 sym_pointer->e_type[0] = N_INDR;
943fbd5b 1591 else if (bfd_is_com_section (sec))
4298e311
ILT		 1592 sym_pointer->e_type[0] = N_UNDF | N_EXT;
1593 else
1594 {
a1774c51
ILT		 1595 (*_bfd_error_handler)
1596 ("%s: can not represent section `%s' in a.out object file format",
1597 bfd_get_filename (abfd), bfd_get_section_name (abfd, sec));
4298e311
ILT		 1598 bfd_set_error (bfd_error_nonrepresentable_section);
1599 return false;
1600 }
6f56c941 1601
6db82ea7 1602 /* Turn the symbol from section relative to absolute again */
943fbd5b 1603 value += sec->vma + off;
c188b0be 1604
4298e311 1605 if ((cache_ptr->flags & BSF_WARNING) != 0)
d7e34f67 1606 sym_pointer->e_type[0] = N_WARNING;
c188b0be 1607
4298e311
ILT		 1608 if ((cache_ptr->flags & BSF_DEBUGGING) != 0)
1609 sym_pointer->e_type[0] = ((aout_symbol_type *) cache_ptr)->type;
1610 else if ((cache_ptr->flags & BSF_GLOBAL) != 0)
3caa6924 1611 sym_pointer->e_type[0] |= N_EXT;
4298e311
ILT		 1612
1613 if ((cache_ptr->flags & BSF_CONSTRUCTOR) != 0)
1614 {
1615 int type = ((aout_symbol_type *) cache_ptr)->type;
1616 switch (type)
1617 {
1618 case N_ABS: type = N_SETA; break;
1619 case N_TEXT: type = N_SETT; break;
1620 case N_DATA: type = N_SETD; break;
1621 case N_BSS: type = N_SETB; break;
1622 }
1623 sym_pointer->e_type[0] = type;
1624 }
1625
1626 if ((cache_ptr->flags & BSF_WEAK) != 0)
1627 {
1628 int type;
1629
1630 switch (sym_pointer->e_type[0] & N_TYPE)
1631 {
1632 default:
1633 case N_ABS: type = N_WEAKA; break;
1634 case N_TEXT: type = N_WEAKT; break;
1635 case N_DATA: type = N_WEAKD; break;
1636 case N_BSS: type = N_WEAKB; break;
1637 case N_UNDF: type = N_WEAKU; break;
1638 }
1639 sym_pointer->e_type[0] = type;
1640 }
6db82ea7 1641
7ed4093a 1642 PUT_WORD(abfd, value, sym_pointer->e_value);
4c3721d5
ILT		 1643
1644 return true;
7ed4093a
SC		 1645}
1646\f
1647/* Native-level interface to symbols. */
1648
7ed4093a 1649asymbol *
8eb5d4be
JK		 1650NAME(aout,make_empty_symbol) (abfd)
1651 bfd *abfd;
9e2dad8e
JG		 1652{
1653 aout_symbol_type *new =
1654 (aout_symbol_type *)bfd_zalloc (abfd, sizeof (aout_symbol_type));
9783e04a 1655 if (!new)
a9713b91 1656 return NULL;
9e2dad8e 1657 new->symbol.the_bfd = abfd;
fa2b89f1 1658
9e2dad8e
JG		 1659 return &new->symbol;
1660}
7ed4093a 1661
0ee75d02
ILT		 1662/* Translate a set of internal symbols into external symbols. */
1663
fa77c704
ILT		 1664boolean
1665NAME(aout,translate_symbol_table) (abfd, in, ext, count, str, strsize, dynamic)
0ee75d02
ILT		 1666 bfd *abfd;
1667 aout_symbol_type *in;
1668 struct external_nlist *ext;
1669 bfd_size_type count;
1670 char *str;
1671 bfd_size_type strsize;
1672 boolean dynamic;
1673{
1674 struct external_nlist *ext_end;
1675
1676 ext_end = ext + count;
1677 for (; ext < ext_end; ext++, in++)
1678 {
1679 bfd_vma x;
1680
1681 x = GET_WORD (abfd, ext->e_strx);
1682 in->symbol.the_bfd = abfd;
ca1c6bec
ILT		 1683
1684 /* For the normal symbols, the zero index points at the number
1685 of bytes in the string table but is to be interpreted as the
1686 null string. For the dynamic symbols, the number of bytes in
1687 the string table is stored in the __DYNAMIC structure and the
1688 zero index points at an actual string. */
1689 if (x == 0 && ! dynamic)
1690 in->symbol.name = "";
1691 else if (x < strsize)
0ee75d02
ILT		 1692 in->symbol.name = str + x;
1693 else
1694 return false;
1695
1696 in->symbol.value = GET_SWORD (abfd, ext->e_value);
1697 in->desc = bfd_h_get_16 (abfd, ext->e_desc);
1698 in->other = bfd_h_get_8 (abfd, ext->e_other);
1699 in->type = bfd_h_get_8 (abfd, ext->e_type);
74942465 1700 in->symbol.udata.p = NULL;
0ee75d02 1701
4298e311 1702 if (! translate_from_native_sym_flags (abfd, in))
9783e04a 1703 return false;
0ee75d02
ILT		 1704
1705 if (dynamic)
1706 in->symbol.flags |= BSF_DYNAMIC;
1707 }
1708
1709 return true;
1710}
1711
1712/* We read the symbols into a buffer, which is discarded when this
1713 function exits. We read the strings into a buffer large enough to
1714 hold them all plus all the cached symbol entries. */
1715
7ed4093a 1716boolean
8eb5d4be
JK		 1717NAME(aout,slurp_symbol_table) (abfd)
1718 bfd *abfd;
9e2dad8e 1719{
5c8444f8 1720 struct external_nlist *old_external_syms;
9e2dad8e 1721 aout_symbol_type *cached;
5c8444f8 1722 size_t cached_size;
0f213cc2 1723
9e2dad8e 1724 /* If there's no work to be done, don't do any */
5c8444f8
ILT		 1725 if (obj_aout_symbols (abfd) != (aout_symbol_type *) NULL)
1726 return true;
1727
1728 old_external_syms = obj_aout_external_syms (abfd);
1729
1730 if (! aout_get_external_symbols (abfd))
1731 return false;
1732
fa77c704 1733 cached_size = (obj_aout_external_sym_count (abfd)
5c8444f8 1734 * sizeof (aout_symbol_type));
58142f10 1735 cached = (aout_symbol_type *) bfd_malloc (cached_size);
74942465 1736 if (cached == NULL && cached_size != 0)
58142f10 1737 return false;
74942465
ILT		 1738 if (cached_size != 0)
1739 memset (cached, 0, cached_size);
5c8444f8
ILT		 1740
1741 /* Convert from external symbol information to internal. */
fa77c704
ILT		 1742 if (! (NAME(aout,translate_symbol_table)
1743 (abfd, cached,
1744 obj_aout_external_syms (abfd),
1745 obj_aout_external_sym_count (abfd),
1746 obj_aout_external_strings (abfd),
1747 obj_aout_external_string_size (abfd),
1748 false)))
0f213cc2 1749 {
5c8444f8 1750 free (cached);
0f213cc2
KR		 1751 return false;
1752 }
1753
fa77c704 1754 bfd_get_symcount (abfd) = obj_aout_external_sym_count (abfd);
0f213cc2 1755
5c8444f8 1756 obj_aout_symbols (abfd) = cached;
0f213cc2 1757
5c8444f8
ILT		 1758 /* It is very likely that anybody who calls this function will not
1759 want the external symbol information, so if it was allocated
1760 because of our call to aout_get_external_symbols, we free it up
1761 right away to save space. */
1762 if (old_external_syms == (struct external_nlist *) NULL
1763 && obj_aout_external_syms (abfd) != (struct external_nlist *) NULL)
1764 {
7ac84736 1765#ifdef USE_MMAP
4fe6d901 1766 bfd_free_window (&obj_aout_sym_window (abfd));
7ac84736
KR		 1767#else
1768 free (obj_aout_external_syms (abfd));
1769#endif
5c8444f8 1770 obj_aout_external_syms (abfd) = NULL;
0ee75d02 1771 }
0f213cc2 1772
9e2dad8e
JG		 1773 return true;
1774}
0f213cc2 1775\f
d17fc4c9
ILT		 1776/* We use a hash table when writing out symbols so that we only write
1777 out a particular string once. This helps particularly when the
1778 linker writes out stabs debugging entries, because each different
1779 contributing object file tends to have many duplicate stabs
1780 strings.
1781
d63d0479
ILT		 1782 This hash table code breaks dbx on SunOS 4.1.3, so we don't do it
1783 if BFD_TRADITIONAL_FORMAT is set. */
0f213cc2 1784
d17fc4c9 1785static bfd_size_type add_to_stringtab
1afd2380
ILT		 1786 PARAMS ((bfd *, struct bfd_strtab_hash *, const char *, boolean));
1787static boolean emit_stringtab PARAMS ((bfd *, struct bfd_strtab_hash *));
d17fc4c9
ILT		 1788
1789/* Get the index of a string in a strtab, adding it if it is not
1afd2380 1790 already present. */
d17fc4c9
ILT		 1791
1792static INLINE bfd_size_type
1793add_to_stringtab (abfd, tab, str, copy)
0f213cc2 1794 bfd *abfd;
1afd2380 1795 struct bfd_strtab_hash *tab;
d17fc4c9
ILT		 1796 const char *str;
1797 boolean copy;
0f213cc2 1798{
1afd2380 1799 boolean hash;
435b470e 1800 bfd_size_type index;
0f213cc2 1801
d17fc4c9 1802 /* An index of 0 always means the empty string. */
204ba9e3 1803 if (str == 0 || *str == '\0')
d17fc4c9 1804 return 0;
0f213cc2 1805
1afd2380
ILT		 1806 /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx
1807 doesn't understand a hashed string table. */
1808 hash = true;
1809 if ((abfd->flags & BFD_TRADITIONAL_FORMAT) != 0)
1810 hash = false;
0f213cc2 1811
435b470e
ILT		 1812 index = _bfd_stringtab_add (tab, str, hash, copy);
1813
1814 if (index != (bfd_size_type) -1)
1815 {
1816 /* Add BYTES_IN_WORD to the return value to account for the
1817 space taken up by the string table size. */
1818 index += BYTES_IN_WORD;
1819 }
1820
1821 return index;
0f213cc2
KR		 1822}
1823
d17fc4c9
ILT		 1824/* Write out a strtab. ABFD is already at the right location in the
1825 file. */
1826
29e626eb 1827static boolean
d17fc4c9
ILT		 1828emit_stringtab (abfd, tab)
1829 register bfd *abfd;
1afd2380 1830 struct bfd_strtab_hash *tab;
0f213cc2 1831{
d17fc4c9 1832 bfd_byte buffer[BYTES_IN_WORD];
0f213cc2 1833
1afd2380
ILT		 1834 /* The string table starts with the size. */
1835 PUT_WORD (abfd, _bfd_stringtab_size (tab) + BYTES_IN_WORD, buffer);
29e626eb
ILT		 1836 if (bfd_write ((PTR) buffer, 1, BYTES_IN_WORD, abfd) != BYTES_IN_WORD)
1837 return false;
0f213cc2 1838
1afd2380 1839 return _bfd_stringtab_emit (abfd, tab);
0f213cc2 1840}
d17fc4c9 1841\f
4c3721d5 1842boolean
8eb5d4be
JK		 1843NAME(aout,write_syms) (abfd)
1844 bfd *abfd;
0f213cc2
KR		 1845{
1846 unsigned int count ;
1847 asymbol **generic = bfd_get_outsymbols (abfd);
1afd2380 1848 struct bfd_strtab_hash *strtab;
0f213cc2 1849
1afd2380
ILT		 1850 strtab = _bfd_stringtab_init ();
1851 if (strtab == NULL)
d17fc4c9 1852 return false;
0f213cc2
KR		 1853
1854 for (count = 0; count < bfd_get_symcount (abfd); count++)
1855 {
7ed4093a 1856 asymbol *g = generic[count];
d17fc4c9 1857 bfd_size_type indx;
7ed4093a 1858 struct external_nlist nsp;
6db82ea7 1859
1afd2380 1860 indx = add_to_stringtab (abfd, strtab, g->name, false);
d17fc4c9
ILT		 1861 if (indx == (bfd_size_type) -1)
1862 goto error_return;
1863 PUT_WORD (abfd, indx, (bfd_byte *) nsp.e_strx);
6db82ea7 1864
0f213cc2
KR		 1865 if (bfd_asymbol_flavour(g) == abfd->xvec->flavour)
1866 {
1867 bfd_h_put_16(abfd, aout_symbol(g)->desc, nsp.e_desc);
1868 bfd_h_put_8(abfd, aout_symbol(g)->other, nsp.e_other);
1869 bfd_h_put_8(abfd, aout_symbol(g)->type, nsp.e_type);
1870 }
7ed4093a 1871 else
0f213cc2
KR		 1872 {
1873 bfd_h_put_16(abfd,0, nsp.e_desc);
1874 bfd_h_put_8(abfd, 0, nsp.e_other);
1875 bfd_h_put_8(abfd, 0, nsp.e_type);
1876 }
7b02b4ed 1877
4298e311 1878 if (! translate_to_native_sym_flags (abfd, g, &nsp))
d17fc4c9 1879 goto error_return;
7b02b4ed 1880
4c3721d5
ILT		 1881 if (bfd_write((PTR)&nsp,1,EXTERNAL_NLIST_SIZE, abfd)
1882 != EXTERNAL_NLIST_SIZE)
d17fc4c9 1883 goto error_return;
7ed4093a 1884
ae115e51 1885 /* NB: `KEEPIT' currently overlays `udata.p', so set this only
0f213cc2
KR		 1886 here, at the end. */
1887 g->KEEPIT = count;
1888 }
7ed4093a 1889
1afd2380 1890 if (! emit_stringtab (abfd, strtab))
d17fc4c9
ILT		 1891 goto error_return;
1892
1afd2380 1893 _bfd_stringtab_free (strtab);
d17fc4c9
ILT		 1894
1895 return true;
1896
1897error_return:
1afd2380 1898 _bfd_stringtab_free (strtab);
d17fc4c9 1899 return false;
0f213cc2 1900}
7ed4093a 1901
0f213cc2 1902\f
326e32d7 1903long
8eb5d4be
JK		 1904NAME(aout,get_symtab) (abfd, location)
1905 bfd *abfd;
1906 asymbol **location;
3f7607af 1907{
7ed4093a
SC		 1908 unsigned int counter = 0;
1909 aout_symbol_type *symbase;
ce07dd7c 1910
326e32d7
ILT		 1911 if (!NAME(aout,slurp_symbol_table)(abfd))
1912 return -1;
ce07dd7c 1913
7ed4093a
SC		 1914 for (symbase = obj_aout_symbols(abfd); counter++ < bfd_get_symcount (abfd);)
1915 *(location++) = (asymbol *)( symbase++);
1916 *location++ =0;
ce07dd7c 1917 return bfd_get_symcount (abfd);
3f7607af 1918}
7ed4093a
SC		 1919
1920\f
1921/* Standard reloc stuff */
1922/* Output standard relocation information to a file in target byte order. */
1923
1924void
8eb5d4be
JK		 1925NAME(aout,swap_std_reloc_out) (abfd, g, natptr)
1926 bfd *abfd;
1927 arelent *g;
1928 struct reloc_std_external *natptr;
3f7607af 1929{
6db82ea7
SC		 1930 int r_index;
1931 asymbol *sym = *(g->sym_ptr_ptr);
1932 int r_extern;
1933 unsigned int r_length;
1934 int r_pcrel;
1935 int r_baserel, r_jmptable, r_relative;
6db82ea7 1936 asection *output_section = sym->section->output_section;
ce07dd7c 1937
6db82ea7 1938 PUT_WORD(abfd, g->address, natptr->r_address);
ce07dd7c 1939
6db82ea7
SC		 1940 r_length = g->howto->size ; /* Size as a power of two */
1941 r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */
c188b0be
DM		 1942 /* XXX This relies on relocs coming from a.out files. */
1943 r_baserel = (g->howto->type & 8) != 0;
cb9461ff
JK		 1944 r_jmptable = (g->howto->type & 16) != 0;
1945 r_relative = (g->howto->type & 32) != 0;
c188b0be 1946
728472f1
ILT		 1947#if 0
1948 /* For a standard reloc, the addend is in the object file. */
6db82ea7 1949 r_addend = g->addend + (*(g->sym_ptr_ptr))->section->output_section->vma;
728472f1 1950#endif
c188b0be 1951
6db82ea7
SC		 1952 /* name was clobbered by aout_write_syms to be symbol index */
1953
c188b0be 1954 /* If this relocation is relative to a symbol then set the
2768b3f7
SC		 1955 r_index to the symbols index, and the r_extern bit.
1956
1957 Absolute symbols can come in in two ways, either as an offset
1958 from the abs section, or as a symbol which has an abs value.
1959 check for that here
1960 */
c188b0be 1961
2768b3f7 1962
382f2a3d 1963 if (bfd_is_com_section (output_section)
4587b578
ILT		 1964 || bfd_is_abs_section (output_section)
1965 || bfd_is_und_section (output_section))
ce07dd7c 1966 {
4587b578 1967 if (bfd_abs_section_ptr->symbol == sym)
2768b3f7
SC		 1968 {
1969 /* Whoops, looked like an abs symbol, but is really an offset
1970 from the abs section */
1971 r_index = 0;
1972 r_extern = 0;
1973 }
c188b0be 1974 else
2768b3f7
SC		 1975 {
1976 /* Fill in symbol */
1977 r_extern = 1;
ae115e51 1978 r_index = (*(g->sym_ptr_ptr))->KEEPIT;
c188b0be 1979
2768b3f7 1980 }
ce07dd7c 1981 }
c188b0be 1982 else
ce07dd7c
KR		 1983 {
1984 /* Just an ordinary section */
1985 r_extern = 0;
c188b0be 1986 r_index = output_section->target_index;
ce07dd7c
KR		 1987 }
1988
6db82ea7 1989 /* now the fun stuff */
64d5f5d0 1990 if (bfd_header_big_endian (abfd)) {
7ed4093a
SC		 1991 natptr->r_index[0] = r_index >> 16;
1992 natptr->r_index[1] = r_index >> 8;
1993 natptr->r_index[2] = r_index;
1994 natptr->r_type[0] =
6db82ea7
SC		 1995 (r_extern? RELOC_STD_BITS_EXTERN_BIG: 0)
1996 | (r_pcrel? RELOC_STD_BITS_PCREL_BIG: 0)
1997 | (r_baserel? RELOC_STD_BITS_BASEREL_BIG: 0)
1998 | (r_jmptable? RELOC_STD_BITS_JMPTABLE_BIG: 0)
1999 | (r_relative? RELOC_STD_BITS_RELATIVE_BIG: 0)
2000 | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG);
7ed4093a 2001 } else {
6db82ea7
SC		 2002 natptr->r_index[2] = r_index >> 16;
2003 natptr->r_index[1] = r_index >> 8;
2004 natptr->r_index[0] = r_index;
2005 natptr->r_type[0] =
2006 (r_extern? RELOC_STD_BITS_EXTERN_LITTLE: 0)
7ed4093a 2007 | (r_pcrel? RELOC_STD_BITS_PCREL_LITTLE: 0)
6db82ea7
SC		 2008 | (r_baserel? RELOC_STD_BITS_BASEREL_LITTLE: 0)
2009 | (r_jmptable? RELOC_STD_BITS_JMPTABLE_LITTLE: 0)
2010 | (r_relative? RELOC_STD_BITS_RELATIVE_LITTLE: 0)
2011 | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE);
2012 }
3f7607af 2013}
7ed4093a
SC		 2014
2015
2016/* Extended stuff */
2017/* Output extended relocation information to a file in target byte order. */
2018
2019void
8eb5d4be
JK		 2020NAME(aout,swap_ext_reloc_out) (abfd, g, natptr)
2021 bfd *abfd;
2022 arelent *g;
2023 register struct reloc_ext_external *natptr;
3f7607af 2024{
6db82ea7
SC		 2025 int r_index;
2026 int r_extern;
2027 unsigned int r_type;
2028 unsigned int r_addend;
c188b0be 2029 asymbol *sym = *(g->sym_ptr_ptr);
6db82ea7 2030 asection *output_section = sym->section->output_section;
c188b0be 2031
6db82ea7 2032 PUT_WORD (abfd, g->address, natptr->r_address);
c188b0be 2033
6db82ea7 2034 r_type = (unsigned int) g->howto->type;
7ed4093a 2035
ae115e51
ILT		 2036 r_addend = g->addend;
2037 if ((sym->flags & BSF_SECTION_SYM) != 0)
2038 r_addend += (*(g->sym_ptr_ptr))->section->output_section->vma;
7ed4093a 2039
c188b0be 2040 /* If this relocation is relative to a symbol then set the
2768b3f7
SC		 2041 r_index to the symbols index, and the r_extern bit.
2042
2043 Absolute symbols can come in in two ways, either as an offset
2044 from the abs section, or as a symbol which has an abs value.
c188b0be
DM		 2045 check for that here. */
2046
ae115e51 2047 if (bfd_is_abs_section (bfd_get_section (sym)))
2768b3f7 2048 {
2768b3f7 2049 r_extern = 0;
ae115e51
ILT		 2050 r_index = 0;
2051 }
2052 else if ((sym->flags & BSF_SECTION_SYM) == 0)
2768b3f7 2053 {
f69e888e
ILT		 2054 if (bfd_is_und_section (bfd_get_section (sym))
2055 || (sym->flags & BSF_GLOBAL) != 0)
2056 r_extern = 1;
2057 else
2058 r_extern = 0;
ae115e51 2059 r_index = (*(g->sym_ptr_ptr))->KEEPIT;
2768b3f7 2060 }
c188b0be 2061 else
ae115e51
ILT		 2062 {
2063 /* Just an ordinary section */
2064 r_extern = 0;
2065 r_index = output_section->target_index;
2066 }
c188b0be 2067
7ed4093a 2068 /* now the fun stuff */
64d5f5d0 2069 if (bfd_header_big_endian (abfd)) {
2768b3f7
SC		 2070 natptr->r_index[0] = r_index >> 16;
2071 natptr->r_index[1] = r_index >> 8;
2072 natptr->r_index[2] = r_index;
2073 natptr->r_type[0] =
c188b0be
DM		 2074 ((r_extern? RELOC_EXT_BITS_EXTERN_BIG: 0)
2075 | (r_type << RELOC_EXT_BITS_TYPE_SH_BIG));
2768b3f7
SC		 2076 } else {
2077 natptr->r_index[2] = r_index >> 16;
2078 natptr->r_index[1] = r_index >> 8;
2079 natptr->r_index[0] = r_index;
2080 natptr->r_type[0] =
2081 (r_extern? RELOC_EXT_BITS_EXTERN_LITTLE: 0)
2082 | (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE);
2083 }
7ed4093a
SC		 2084
2085 PUT_WORD (abfd, r_addend, natptr->r_addend);
2086}
2087
6db82ea7
SC		 2088/* BFD deals internally with all things based from the section they're
2089 in. so, something in 10 bytes into a text section with a base of
c188b0be 2090 50 would have a symbol (.text+10) and know .text vma was 50.
6db82ea7
SC		 2091
2092 Aout keeps all it's symbols based from zero, so the symbol would
2093 contain 60. This macro subs the base of each section from the value
2094 to give the true offset from the section */
2095
2096
7ed4093a
SC		 2097#define MOVE_ADDRESS(ad) \
2098 if (r_extern) { \
6db82ea7
SC		 2099 /* undefined symbol */ \
2100 cache_ptr->sym_ptr_ptr = symbols + r_index; \
2101 cache_ptr->addend = ad; \
2102 } else { \
2103 /* defined, section relative. replace symbol with pointer to \
2104 symbol which points to section */ \
7ed4093a
SC		 2105 switch (r_index) { \
2106 case N_TEXT: \
2107 case N_TEXT | N_EXT: \
6db82ea7 2108 cache_ptr->sym_ptr_ptr = obj_textsec(abfd)->symbol_ptr_ptr; \
7ed4093a
SC		 2109 cache_ptr->addend = ad - su->textsec->vma; \
2110 break; \
2111 case N_DATA: \
2112 case N_DATA | N_EXT: \
6db82ea7 2113 cache_ptr->sym_ptr_ptr = obj_datasec(abfd)->symbol_ptr_ptr; \
7ed4093a
SC		 2114 cache_ptr->addend = ad - su->datasec->vma; \
2115 break; \
2116 case N_BSS: \
2117 case N_BSS | N_EXT: \
6db82ea7 2118 cache_ptr->sym_ptr_ptr = obj_bsssec(abfd)->symbol_ptr_ptr; \
7ed4093a
SC		 2119 cache_ptr->addend = ad - su->bsssec->vma; \
2120 break; \
6db82ea7 2121 default: \
7ed4093a
SC		 2122 case N_ABS: \
2123 case N_ABS | N_EXT: \
4587b578 2124 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \
6db82ea7 2125 cache_ptr->addend = ad; \
7ed4093a
SC		 2126 break; \
2127 } \
2128 } \
2129
2130void
2f675427 2131NAME(aout,swap_ext_reloc_in) (abfd, bytes, cache_ptr, symbols, symcount)
8eb5d4be
JK		 2132 bfd *abfd;
2133 struct reloc_ext_external *bytes;
2134 arelent *cache_ptr;
2135 asymbol **symbols;
2f675427 2136 bfd_size_type symcount;
7ed4093a 2137{
ae115e51 2138 unsigned int r_index;
7ed4093a
SC		 2139 int r_extern;
2140 unsigned int r_type;
6db82ea7 2141 struct aoutdata *su = &(abfd->tdata.aout_data->a);
7ed4093a
SC		 2142
2143 cache_ptr->address = (GET_SWORD (abfd, bytes->r_address));
2144
2145 /* now the fun stuff */
64d5f5d0 2146 if (bfd_header_big_endian (abfd)) {
382f2a3d
ILT		 2147 r_index = (bytes->r_index[0] << 16)
2148 | (bytes->r_index[1] << 8)
2149 | bytes->r_index[2];
7ed4093a
SC		 2150 r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG));
2151 r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
2152 >> RELOC_EXT_BITS_TYPE_SH_BIG;
2153 } else {
382f2a3d
ILT		 2154 r_index = (bytes->r_index[2] << 16)
2155 | (bytes->r_index[1] << 8)
2156 | bytes->r_index[0];
7ed4093a
SC		 2157 r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE));
2158 r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
2159 >> RELOC_EXT_BITS_TYPE_SH_LITTLE;
2160 }
2161
2f675427
ILT		 2162 cache_ptr->howto = howto_table_ext + r_type;
2163
2164 /* Base relative relocs are always against the symbol table,
2165 regardless of the setting of r_extern. r_extern just reflects
2166 whether the symbol the reloc is against is local or global. */
2167 if (r_type == RELOC_BASE10
2168 || r_type == RELOC_BASE13
2169 || r_type == RELOC_BASE22)
2170 r_extern = 1;
2171
2172 if (r_extern && r_index > symcount)
773033d2
ILT		 2173 {
2174 /* We could arrange to return an error, but it might be useful
2175 to see the file even if it is bad. */
2176 r_extern = 0;
2177 r_index = N_ABS;
2178 }
2179
6db82ea7 2180 MOVE_ADDRESS(GET_SWORD(abfd, bytes->r_addend));
7ed4093a
SC		 2181}
2182
2183void
2f675427 2184NAME(aout,swap_std_reloc_in) (abfd, bytes, cache_ptr, symbols, symcount)
8eb5d4be
JK		 2185 bfd *abfd;
2186 struct reloc_std_external *bytes;
2187 arelent *cache_ptr;
2188 asymbol **symbols;
2f675427 2189 bfd_size_type symcount;
7ed4093a 2190{
ae115e51 2191 unsigned int r_index;
7ed4093a
SC		 2192 int r_extern;
2193 unsigned int r_length;
2194 int r_pcrel;
2195 int r_baserel, r_jmptable, r_relative;
6db82ea7 2196 struct aoutdata *su = &(abfd->tdata.aout_data->a);
ae115e51 2197 unsigned int howto_idx;
7ed4093a 2198
34dd8ba3 2199 cache_ptr->address = bfd_h_get_32 (abfd, bytes->r_address);
7ed4093a
SC		 2200
2201 /* now the fun stuff */
64d5f5d0 2202 if (bfd_header_big_endian (abfd)) {
382f2a3d
ILT		 2203 r_index = (bytes->r_index[0] << 16)
2204 | (bytes->r_index[1] << 8)
2205 | bytes->r_index[2];
7ed4093a
SC		 2206 r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
2207 r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
2208 r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_BIG));
2209 r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG));
2210 r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG));
c188b0be 2211 r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_BIG)
7ed4093a
SC		 2212 >> RELOC_STD_BITS_LENGTH_SH_BIG;
2213 } else {
382f2a3d
ILT		 2214 r_index = (bytes->r_index[2] << 16)
2215 | (bytes->r_index[1] << 8)
2216 | bytes->r_index[0];
7ed4093a
SC		 2217 r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
2218 r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
2219 r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE));
2220 r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE));
2221 r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE));
c188b0be 2222 r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE)
7ed4093a
SC		 2223 >> RELOC_STD_BITS_LENGTH_SH_LITTLE;
2224 }
2225
cb9461ff
JK		 2226 howto_idx = r_length + 4 * r_pcrel + 8 * r_baserel
2227 + 16 * r_jmptable + 32 * r_relative;
c188b0be
DM		 2228 BFD_ASSERT (howto_idx < TABLE_SIZE (howto_table_std));
2229 cache_ptr->howto = howto_table_std + howto_idx;
ae115e51 2230 BFD_ASSERT (cache_ptr->howto->type != (unsigned int) -1);
7ed4093a 2231
2f675427
ILT		 2232 /* Base relative relocs are always against the symbol table,
2233 regardless of the setting of r_extern. r_extern just reflects
2234 whether the symbol the reloc is against is local or global. */
2235 if (r_baserel)
2236 r_extern = 1;
2237
2238 if (r_extern && r_index > symcount)
773033d2
ILT		 2239 {
2240 /* We could arrange to return an error, but it might be useful
2241 to see the file even if it is bad. */
2242 r_extern = 0;
2243 r_index = N_ABS;
2244 }
2245
7ed4093a
SC		 2246 MOVE_ADDRESS(0);
2247}
2248
5c8444f8 2249/* Read and swap the relocs for a section. */
7ed4093a
SC		 2250
2251boolean
8eb5d4be
JK		 2252NAME(aout,slurp_reloc_table) (abfd, asect, symbols)
2253 bfd *abfd;
2254 sec_ptr asect;
2255 asymbol **symbols;
7ed4093a
SC		 2256{
2257 unsigned int count;
2258 bfd_size_type reloc_size;
2259 PTR relocs;
2260 arelent *reloc_cache;
2261 size_t each_size;
0ee75d02
ILT		 2262 unsigned int counter = 0;
2263 arelent *cache_ptr;
7ed4093a 2264
5c8444f8
ILT		 2265 if (asect->relocation)
2266 return true;
7ed4093a 2267
5c8444f8
ILT		 2268 if (asect->flags & SEC_CONSTRUCTOR)
2269 return true;
7ed4093a 2270
0ee75d02 2271 if (asect == obj_datasec (abfd))
7ed4093a 2272 reloc_size = exec_hdr(abfd)->a_drsize;
0ee75d02 2273 else if (asect == obj_textsec (abfd))
7ed4093a 2274 reloc_size = exec_hdr(abfd)->a_trsize;
f42fe159
ILT		 2275 else if (asect == obj_bsssec (abfd))
2276 reloc_size = 0;
0ee75d02
ILT		 2277 else
2278 {
68241b2b 2279 bfd_set_error (bfd_error_invalid_operation);
0ee75d02
ILT		 2280 return false;
2281 }
2282
5c8444f8
ILT		 2283 if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0)
2284 return false;
2285
7ed4093a
SC		 2286 each_size = obj_reloc_entry_size (abfd);
2287
2288 count = reloc_size / each_size;
2289
58142f10 2290 reloc_cache = (arelent *) bfd_malloc ((size_t) (count * sizeof (arelent)));
5c8444f8 2291 if (reloc_cache == NULL && count != 0)
58142f10 2292 return false;
fa77c704 2293 memset (reloc_cache, 0, count * sizeof (arelent));
7ed4093a 2294
58142f10 2295 relocs = bfd_malloc ((size_t) reloc_size);
5c8444f8 2296 if (relocs == NULL && reloc_size != 0)
0ee75d02 2297 {
5c8444f8 2298 free (reloc_cache);
5c8444f8 2299 return false;
0ee75d02 2300 }
7ed4093a 2301
0ee75d02
ILT		 2302 if (bfd_read (relocs, 1, reloc_size, abfd) != reloc_size)
2303 {
5c8444f8
ILT		 2304 free (relocs);
2305 free (reloc_cache);
0ee75d02
ILT		 2306 return false;
2307 }
7ed4093a 2308
0ee75d02
ILT		 2309 cache_ptr = reloc_cache;
2310 if (each_size == RELOC_EXT_SIZE)
2311 {
2312 register struct reloc_ext_external *rptr =
2313 (struct reloc_ext_external *) relocs;
7ed4093a 2314
0ee75d02 2315 for (; counter < count; counter++, rptr++, cache_ptr++)
2f675427
ILT		 2316 NAME(aout,swap_ext_reloc_in) (abfd, rptr, cache_ptr, symbols,
2317 bfd_get_symcount (abfd));
7ed4093a 2318 }
0ee75d02
ILT		 2319 else
2320 {
5c8444f8
ILT		 2321 register struct reloc_std_external *rptr =
2322 (struct reloc_std_external *) relocs;
7ed4093a 2323
0ee75d02 2324 for (; counter < count; counter++, rptr++, cache_ptr++)
2f675427
ILT		 2325 MY_swap_std_reloc_in (abfd, rptr, cache_ptr, symbols,
2326 bfd_get_symcount (abfd));
7ed4093a
SC		 2327 }
2328
5c8444f8
ILT		 2329 free (relocs);
2330
7ed4093a 2331 asect->relocation = reloc_cache;
0ee75d02 2332 asect->reloc_count = cache_ptr - reloc_cache;
5c8444f8 2333
7ed4093a
SC		 2334 return true;
2335}
2336
7ed4093a
SC		 2337/* Write out a relocation section into an object file. */
2338
2339boolean
8eb5d4be
JK		 2340NAME(aout,squirt_out_relocs) (abfd, section)
2341 bfd *abfd;
2342 asection *section;
7ed4093a
SC		 2343{
2344 arelent **generic;
2345 unsigned char *native, *natptr;
2346 size_t each_size;
2347
2348 unsigned int count = section->reloc_count;
2349 size_t natsize;
2350
2351 if (count == 0) return true;
2352
2353 each_size = obj_reloc_entry_size (abfd);
2354 natsize = each_size * count;
2355 native = (unsigned char *) bfd_zalloc (abfd, natsize);
a9713b91 2356 if (!native)
7ed4093a 2357 return false;
7ed4093a
SC		 2358
2359 generic = section->orelocation;
2360
c188b0be 2361 if (each_size == RELOC_EXT_SIZE)
7ed4093a
SC		 2362 {
2363 for (natptr = native;
2364 count != 0;
2365 --count, natptr += each_size, ++generic)
2366 NAME(aout,swap_ext_reloc_out) (abfd, *generic, (struct reloc_ext_external *)natptr);
2367 }
c188b0be 2368 else
7ed4093a
SC		 2369 {
2370 for (natptr = native;
2371 count != 0;
2372 --count, natptr += each_size, ++generic)
f42fe159 2373 MY_swap_std_reloc_out(abfd, *generic, (struct reloc_std_external *)natptr);
7ed4093a
SC		 2374 }
2375
2376 if ( bfd_write ((PTR) native, 1, natsize, abfd) != natsize) {
2377 bfd_release(abfd, native);
2378 return false;
2379 }
2380 bfd_release (abfd, native);
2381
2382 return true;
2383}
2384
2385/* This is stupid. This function should be a boolean predicate */
326e32d7 2386long
8eb5d4be
JK		 2387NAME(aout,canonicalize_reloc) (abfd, section, relptr, symbols)
2388 bfd *abfd;
2389 sec_ptr section;
2390 arelent **relptr;
2391 asymbol **symbols;
7ed4093a
SC		 2392{
2393 arelent *tblptr = section->relocation;
2394 unsigned int count;
2395
4f019d04
ILT		 2396 if (section == obj_bsssec (abfd))
2397 {
2398 *relptr = NULL;
2399 return 0;
2400 }
2401
7ed4093a 2402 if (!(tblptr || NAME(aout,slurp_reloc_table)(abfd, section, symbols)))
326e32d7 2403 return -1;
7ed4093a
SC		 2404
2405 if (section->flags & SEC_CONSTRUCTOR) {
2406 arelent_chain *chain = section->constructor_chain;
2407 for (count = 0; count < section->reloc_count; count ++) {
2408 *relptr ++ = &chain->relent;
2409 chain = chain->next;
2410 }
2411 }
2412 else {
2413 tblptr = section->relocation;
7ed4093a 2414
c188b0be 2415 for (count = 0; count++ < section->reloc_count;)
7ed4093a
SC		 2416 {
2417 *relptr++ = tblptr++;
2418 }
2419 }
2420 *relptr = 0;
2421
2422 return section->reloc_count;
2423}
2424
326e32d7 2425long
8eb5d4be
JK		 2426NAME(aout,get_reloc_upper_bound) (abfd, asect)
2427 bfd *abfd;
2428 sec_ptr asect;
7ed4093a
SC		 2429{
2430 if (bfd_get_format (abfd) != bfd_object) {
68241b2b 2431 bfd_set_error (bfd_error_invalid_operation);
326e32d7 2432 return -1;
7ed4093a
SC		 2433 }
2434 if (asect->flags & SEC_CONSTRUCTOR) {
2435 return (sizeof (arelent *) * (asect->reloc_count+1));
2436 }
2437
7ed4093a 2438 if (asect == obj_datasec (abfd))
fa77c704
ILT		 2439 return (sizeof (arelent *)
2440 * ((exec_hdr(abfd)->a_drsize / obj_reloc_entry_size (abfd))
2441 + 1));
7ed4093a
SC		 2442
2443 if (asect == obj_textsec (abfd))
fa77c704
ILT		 2444 return (sizeof (arelent *)
2445 * ((exec_hdr(abfd)->a_trsize / obj_reloc_entry_size (abfd))
2446 + 1));
7ed4093a 2447
4f019d04
ILT		 2448 if (asect == obj_bsssec (abfd))
2449 return sizeof (arelent *);
2450
f42fe159
ILT		 2451 if (asect == obj_bsssec (abfd))
2452 return 0;
2453
68241b2b 2454 bfd_set_error (bfd_error_invalid_operation);
326e32d7 2455 return -1;
7ed4093a
SC		 2456}
2457
2458\f
326e32d7 2459long
8eb5d4be
JK		 2460NAME(aout,get_symtab_upper_bound) (abfd)
2461 bfd *abfd;
7ed4093a 2462{
326e32d7
ILT		 2463 if (!NAME(aout,slurp_symbol_table)(abfd))
2464 return -1;
7ed4093a
SC		 2465
2466 return (bfd_get_symcount (abfd)+1) * (sizeof (aout_symbol_type *));
2467}
728472f1
ILT		 2468
2469/*ARGSUSED*/
7ed4093a 2470 alent *
8eb5d4be
JK		 2471NAME(aout,get_lineno) (ignore_abfd, ignore_symbol)
2472 bfd *ignore_abfd;
2473 asymbol *ignore_symbol;
7ed4093a
SC		 2474{
2475return (alent *)NULL;
2476}
2477
728472f1 2478/*ARGSUSED*/
c188b0be 2479void
8eb5d4be
JK		 2480NAME(aout,get_symbol_info) (ignore_abfd, symbol, ret)
2481 bfd *ignore_abfd;
2482 asymbol *symbol;
2483 symbol_info *ret;
34dd8ba3
JG		 2484{
2485 bfd_symbol_info (symbol, ret);
2486
2487 if (ret->type == '?')
2488 {
2489 int type_code = aout_symbol(symbol)->type & 0xff;
c189fdfb 2490 const char *stab_name = bfd_get_stab_name (type_code);
34dd8ba3
JG		 2491 static char buf[10];
2492
2493 if (stab_name == NULL)
2494 {
2495 sprintf(buf, "(%d)", type_code);
2496 stab_name = buf;
2497 }
2498 ret->type = '-';
64d5f5d0 2499 ret->stab_type = type_code;
34dd8ba3
JG		 2500 ret->stab_other = (unsigned)(aout_symbol(symbol)->other & 0xff);
2501 ret->stab_desc = (unsigned)(aout_symbol(symbol)->desc & 0xffff);
2502 ret->stab_name = stab_name;
2503 }
2504}
7ed4093a 2505
728472f1 2506/*ARGSUSED*/
c188b0be 2507void
8eb5d4be
JK		 2508NAME(aout,print_symbol) (ignore_abfd, afile, symbol, how)
2509 bfd *ignore_abfd;
2510 PTR afile;
2511 asymbol *symbol;
2512 bfd_print_symbol_type how;
7ed4093a
SC		 2513{
2514 FILE *file = (FILE *)afile;
2515
2516 switch (how) {
9e2dad8e 2517 case bfd_print_symbol_name:
fb3be09b
JG		 2518 if (symbol->name)
2519 fprintf(file,"%s", symbol->name);
7ed4093a 2520 break;
9e2dad8e 2521 case bfd_print_symbol_more:
7ed4093a
SC		 2522 fprintf(file,"%4x %2x %2x",(unsigned)(aout_symbol(symbol)->desc & 0xffff),
2523 (unsigned)(aout_symbol(symbol)->other & 0xff),
2524 (unsigned)(aout_symbol(symbol)->type));
2525 break;
9e2dad8e 2526 case bfd_print_symbol_all:
7ed4093a 2527 {
6db82ea7
SC		 2528 CONST char *section_name = symbol->section->name;
2529
7ed4093a
SC		 2530
2531 bfd_print_symbol_vandf((PTR)file,symbol);
2532
fb3be09b 2533 fprintf(file," %-5s %04x %02x %02x",
7ed4093a
SC		 2534 section_name,
2535 (unsigned)(aout_symbol(symbol)->desc & 0xffff),
2536 (unsigned)(aout_symbol(symbol)->other & 0xff),
9e2dad8e 2537 (unsigned)(aout_symbol(symbol)->type & 0xff));
fb3be09b
JG		 2538 if (symbol->name)
2539 fprintf(file," %s", symbol->name);
7ed4093a
SC		 2540 }
2541 break;
2542 }
2543}
2544
c3246d9b
ILT		 2545/* If we don't have to allocate more than 1MB to hold the generic
2546 symbols, we use the generic minisymbol methord: it's faster, since
2547 it only translates the symbols once, not multiple times. */
2548#define MINISYM_THRESHOLD (1000000 / sizeof (asymbol))
2549
2550/* Read minisymbols. For minisymbols, we use the unmodified a.out
2551 symbols. The minisymbol_to_symbol function translates these into
2552 BFD asymbol structures. */
2553
2554long
2555NAME(aout,read_minisymbols) (abfd, dynamic, minisymsp, sizep)
2556 bfd *abfd;
2557 boolean dynamic;
2558 PTR *minisymsp;
2559 unsigned int *sizep;
2560{
2561 if (dynamic)
2562 {
2563 /* We could handle the dynamic symbols here as well, but it's
2564 easier to hand them off. */
2565 return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep);
2566 }
2567
2568 if (! aout_get_external_symbols (abfd))
2569 return -1;
2570
2571 if (obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD)
2572 return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep);
2573
2574 *minisymsp = (PTR) obj_aout_external_syms (abfd);
2575
2576 /* By passing the external symbols back from this routine, we are
2577 giving up control over the memory block. Clear
2578 obj_aout_external_syms, so that we do not try to free it
2579 ourselves. */
2580 obj_aout_external_syms (abfd) = NULL;
2581
2582 *sizep = EXTERNAL_NLIST_SIZE;
2583 return obj_aout_external_sym_count (abfd);
2584}
2585
2586/* Convert a minisymbol to a BFD asymbol. A minisymbol is just an
2587 unmodified a.out symbol. The SYM argument is a structure returned
2588 by bfd_make_empty_symbol, which we fill in here. */
2589
2590asymbol *
2591NAME(aout,minisymbol_to_symbol) (abfd, dynamic, minisym, sym)
2592 bfd *abfd;
2593 boolean dynamic;
2594 const PTR minisym;
2595 asymbol *sym;
2596{
2597 if (dynamic
2598 || obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD)
2599 return _bfd_generic_minisymbol_to_symbol (abfd, dynamic, minisym, sym);
2600
2601 memset (sym, 0, sizeof (aout_symbol_type));
2602
2603 /* We call translate_symbol_table to translate a single symbol. */
2604 if (! (NAME(aout,translate_symbol_table)
2605 (abfd,
2606 (aout_symbol_type *) sym,
2607 (struct external_nlist *) minisym,
2608 (bfd_size_type) 1,
2609 obj_aout_external_strings (abfd),
2610 obj_aout_external_string_size (abfd),
2611 false)))
2612 return NULL;
2613
2614 return sym;
2615}
2616
c188b0be 2617/*
6724ff46 2618 provided a BFD, a section and an offset into the section, calculate
7ed4093a
SC		 2619 and return the name of the source file and the line nearest to the
2620 wanted location.
2621*/
c188b0be 2622
7ed4093a 2623boolean
8eb5d4be
JK		 2624NAME(aout,find_nearest_line)
2625 (abfd, section, symbols, offset, filename_ptr, functionname_ptr, line_ptr)
2626 bfd *abfd;
2627 asection *section;
2628 asymbol **symbols;
2629 bfd_vma offset;
2630 CONST char **filename_ptr;
2631 CONST char **functionname_ptr;
2632 unsigned int *line_ptr;
7ed4093a
SC		 2633{
2634 /* Run down the file looking for the filename, function and linenumber */
2635 asymbol **p;
6db82ea7
SC		 2636 CONST char *directory_name = NULL;
2637 CONST char *main_file_name = NULL;
2638 CONST char *current_file_name = NULL;
2639 CONST char *line_file_name = NULL; /* Value of current_file_name at line number. */
ae115e51 2640 bfd_vma low_line_vma = 0;
7ed4093a
SC		 2641 bfd_vma low_func_vma = 0;
2642 asymbol *func = 0;
f1c6dd5d
ILT		 2643 size_t filelen, funclen;
2644 char *buf;
2645
7ed4093a
SC		 2646 *filename_ptr = abfd->filename;
2647 *functionname_ptr = 0;
2648 *line_ptr = 0;
2649 if (symbols != (asymbol **)NULL) {
2650 for (p = symbols; *p; p++) {
2651 aout_symbol_type *q = (aout_symbol_type *)(*p);
98d43107 2652 next:
7ed4093a
SC		 2653 switch (q->type){
2654 case N_SO:
3f7607af 2655 main_file_name = current_file_name = q->symbol.name;
98d43107
JG		 2656 /* Look ahead to next symbol to check if that too is an N_SO. */
2657 p++;
2658 if (*p == NULL)
2659 break;
2660 q = (aout_symbol_type *)(*p);
6db82ea7 2661 if (q->type != (int)N_SO)
98d43107
JG		 2662 goto next;
2663
2664 /* Found a second N_SO First is directory; second is filename. */
3f7607af
PB		 2665 directory_name = current_file_name;
2666 main_file_name = current_file_name = q->symbol.name;
2667 if (obj_textsec(abfd) != section)
2668 goto done;
2669 break;
2670 case N_SOL:
2671 current_file_name = q->symbol.name;
7ed4093a 2672 break;
3f7607af 2673
7ed4093a
SC		 2674 case N_SLINE:
2675
2676 case N_DSLINE:
2677 case N_BSLINE:
ae115e51
ILT		 2678 /* We'll keep this if it resolves nearer than the one we have
2679 already. */
2680 if (q->symbol.value >= low_line_vma
2681 && q->symbol.value <= offset)
2682 {
2683 *line_ptr = q->desc;
2684 low_line_vma = q->symbol.value;
2685 line_file_name = current_file_name;
2686 }
7ed4093a
SC		 2687 break;
2688 case N_FUN:
2689 {
2690 /* We'll keep this if it is nearer than the one we have already */
2691 if (q->symbol.value >= low_func_vma &&
2692 q->symbol.value <= offset) {
2693 low_func_vma = q->symbol.value;
2694 func = (asymbol *)q;
2695 }
ae115e51 2696 else if (q->symbol.value > offset)
3f7607af 2697 goto done;
7ed4093a
SC		 2698 }
2699 break;
2700 }
2701 }
2702 }
3f7607af
PB		 2703
2704 done:
f1c6dd5d 2705 if (*line_ptr != 0)
3f7607af 2706 main_file_name = line_file_name;
f1c6dd5d
ILT		 2707
2708 if (main_file_name == NULL
2709 || main_file_name[0] == '/'
2710 || directory_name == NULL)
2711 filelen = 0;
2712 else
2713 filelen = strlen (directory_name) + strlen (main_file_name);
2714 if (func == NULL)
2715 funclen = 0;
2716 else
2717 funclen = strlen (bfd_asymbol_name (func));
2718
2719 if (adata (abfd).line_buf != NULL)
2720 free (adata (abfd).line_buf);
2721 if (filelen + funclen == 0)
2722 adata (abfd).line_buf = buf = NULL;
2723 else
2724 {
58142f10
ILT		 2725 buf = (char *) bfd_malloc (filelen + funclen + 2);
2726 adata (abfd).line_buf = buf;
2727 if (buf == NULL)
2728 return false;
f1c6dd5d
ILT		 2729 }
2730
2731 if (main_file_name != NULL)
2732 {
3f7607af 2733 if (main_file_name[0] == '/' || directory_name == NULL)
f1c6dd5d
ILT		 2734 *filename_ptr = main_file_name;
2735 else
2736 {
2737 sprintf (buf, "%s%s", directory_name, main_file_name);
2738 *filename_ptr = buf;
2739 buf += filelen + 1;
2740 }
2741 }
2742
ae115e51
ILT		 2743 if (func)
2744 {
f1c6dd5d 2745 const char *function = func->name;
ae115e51
ILT		 2746 char *p;
2747
2748 /* The caller expects a symbol name. We actually have a
2749 function name, without the leading underscore. Put the
2750 underscore back in, so that the caller gets a symbol name. */
2751 if (bfd_get_symbol_leading_char (abfd) == '\0')
f1c6dd5d 2752 strcpy (buf, function);
ae115e51
ILT		 2753 else
2754 {
f1c6dd5d
ILT		 2755 buf[0] = bfd_get_symbol_leading_char (abfd);
2756 strcpy (buf + 1, function);
ae115e51 2757 }
ae115e51 2758 /* Have to remove : stuff */
f1c6dd5d 2759 p = strchr (buf, ':');
ae115e51
ILT		 2760 if (p != NULL)
2761 *p = '\0';
f1c6dd5d 2762 *functionname_ptr = buf;
ae115e51 2763 }
f1c6dd5d 2764
7ed4093a 2765 return true;
7ed4093a
SC		 2766}
2767
728472f1 2768/*ARGSUSED*/
c188b0be 2769int
8eb5d4be
JK		 2770NAME(aout,sizeof_headers) (abfd, execable)
2771 bfd *abfd;
2772 boolean execable;
7ed4093a 2773{
6db82ea7 2774 return adata(abfd).exec_bytes_size;
7ed4093a 2775}
5c8444f8
ILT		 2776
2777/* Free all information we have cached for this BFD. We can always
2778 read it again later if we need it. */
2779
2780boolean
2781NAME(aout,bfd_free_cached_info) (abfd)
2782 bfd *abfd;
2783{
2784 asection *o;
2785
c4dd531f
ILT		 2786 if (bfd_get_format (abfd) != bfd_object)
2787 return true;
2788
4852416e
DHW		 2789#define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; }
2790 BFCI_FREE (obj_aout_symbols (abfd));
7ac84736 2791#ifdef USE_MMAP
4fe6d901
KR		 2792 obj_aout_external_syms (abfd) = 0;
2793 bfd_free_window (&obj_aout_sym_window (abfd));
2794 bfd_free_window (&obj_aout_string_window (abfd));
2795 obj_aout_external_strings (abfd) = 0;
7ac84736
KR		 2796#else
2797 BFCI_FREE (obj_aout_external_syms (abfd));
2798 BFCI_FREE (obj_aout_external_strings (abfd));
2799#endif
5c8444f8 2800 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
4852416e
DHW		 2801 BFCI_FREE (o->relocation);
2802#undef BFCI_FREE
5c8444f8
ILT		 2803
2804 return true;
2805}
4c3721d5
ILT		 2806\f
2807/* a.out link code. */
2808
4c3721d5
ILT		 2809static boolean aout_link_add_object_symbols
2810 PARAMS ((bfd *, struct bfd_link_info *));
2811static boolean aout_link_check_archive_element
2812 PARAMS ((bfd *, struct bfd_link_info *, boolean *));
4c3721d5
ILT		 2813static boolean aout_link_free_symbols PARAMS ((bfd *));
2814static boolean aout_link_check_ar_symbols
2815 PARAMS ((bfd *, struct bfd_link_info *, boolean *pneeded));
2816static boolean aout_link_add_symbols
2817 PARAMS ((bfd *, struct bfd_link_info *));
2818
2819/* Routine to create an entry in an a.out link hash table. */
2820
e85e8bfe
ILT		 2821struct bfd_hash_entry *
2822NAME(aout,link_hash_newfunc) (entry, table, string)
4c3721d5
ILT		 2823 struct bfd_hash_entry *entry;
2824 struct bfd_hash_table *table;
2825 const char *string;
2826{
2827 struct aout_link_hash_entry *ret = (struct aout_link_hash_entry *) entry;
2828
2829 /* Allocate the structure if it has not already been allocated by a
2830 subclass. */
2831 if (ret == (struct aout_link_hash_entry *) NULL)
2832 ret = ((struct aout_link_hash_entry *)
2833 bfd_hash_allocate (table, sizeof (struct aout_link_hash_entry)));
9783e04a 2834 if (ret == (struct aout_link_hash_entry *) NULL)
a9713b91 2835 return (struct bfd_hash_entry *) ret;
4c3721d5
ILT		 2836
2837 /* Call the allocation method of the superclass. */
2838 ret = ((struct aout_link_hash_entry *)
2839 _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2840 table, string));
9783e04a 2841 if (ret)
35fee729
ILT		 2842 {
2843 /* Set local fields. */
2844 ret->written = false;
2845 ret->indx = -1;
2846 }
4c3721d5
ILT		 2847
2848 return (struct bfd_hash_entry *) ret;
2849}
2850
e85e8bfe
ILT		 2851/* Initialize an a.out link hash table. */
2852
2853boolean
2854NAME(aout,link_hash_table_init) (table, abfd, newfunc)
2855 struct aout_link_hash_table *table;
2856 bfd *abfd;
2857 struct bfd_hash_entry *(*newfunc) PARAMS ((struct bfd_hash_entry *,
2858 struct bfd_hash_table *,
2859 const char *));
2860{
2861 return _bfd_link_hash_table_init (&table->root, abfd, newfunc);
2862}
2863
4c3721d5
ILT		 2864/* Create an a.out link hash table. */
2865
2866struct bfd_link_hash_table *
2867NAME(aout,link_hash_table_create) (abfd)
2868 bfd *abfd;
2869{
2870 struct aout_link_hash_table *ret;
2871
2872 ret = ((struct aout_link_hash_table *)
c3246d9b
ILT		 2873 bfd_alloc (abfd, sizeof (struct aout_link_hash_table)));
2874 if (ret == NULL)
a9713b91 2875 return (struct bfd_link_hash_table *) NULL;
e85e8bfe
ILT		 2876 if (! NAME(aout,link_hash_table_init) (ret, abfd,
2877 NAME(aout,link_hash_newfunc)))
4c3721d5
ILT		 2878 {
2879 free (ret);
2880 return (struct bfd_link_hash_table *) NULL;
2881 }
2882 return &ret->root;
2883}
2884
4c3721d5
ILT		 2885/* Given an a.out BFD, add symbols to the global hash table as
2886 appropriate. */
2887
2888boolean
2889NAME(aout,link_add_symbols) (abfd, info)
2890 bfd *abfd;
2891 struct bfd_link_info *info;
2892{
2893 switch (bfd_get_format (abfd))
2894 {
2895 case bfd_object:
2896 return aout_link_add_object_symbols (abfd, info);
2897 case bfd_archive:
2898 return _bfd_generic_link_add_archive_symbols
2899 (abfd, info, aout_link_check_archive_element);
2900 default:
68241b2b 2901 bfd_set_error (bfd_error_wrong_format);
4c3721d5
ILT		 2902 return false;
2903 }
2904}
2905
2906/* Add symbols from an a.out object file. */
2907
2908static boolean
2909aout_link_add_object_symbols (abfd, info)
2910 bfd *abfd;
2911 struct bfd_link_info *info;
2912{
5c8444f8 2913 if (! aout_get_external_symbols (abfd))
4c3721d5
ILT		 2914 return false;
2915 if (! aout_link_add_symbols (abfd, info))
2916 return false;
2917 if (! info->keep_memory)
2918 {
2919 if (! aout_link_free_symbols (abfd))
2920 return false;
2921 }
2922 return true;
2923}
2924
2925/* Check a single archive element to see if we need to include it in
2926 the link. *PNEEDED is set according to whether this element is
2927 needed in the link or not. This is called from
2928 _bfd_generic_link_add_archive_symbols. */
2929
2930static boolean
2931aout_link_check_archive_element (abfd, info, pneeded)
2932 bfd *abfd;
2933 struct bfd_link_info *info;
2934 boolean *pneeded;
2935{
5c8444f8 2936 if (! aout_get_external_symbols (abfd))
4c3721d5
ILT		 2937 return false;
2938
2939 if (! aout_link_check_ar_symbols (abfd, info, pneeded))
2940 return false;
2941
2942 if (*pneeded)
2943 {
2944 if (! aout_link_add_symbols (abfd, info))
2945 return false;
2946 }
2947
1afd2380 2948 if (! info->keep_memory || ! *pneeded)
4c3721d5
ILT		 2949 {
2950 if (! aout_link_free_symbols (abfd))
2951 return false;
2952 }
2953
2954 return true;
2955}
2956
4c3721d5
ILT		 2957/* Free up the internal symbols read from an a.out file. */
2958
2959static boolean
2960aout_link_free_symbols (abfd)
2961 bfd *abfd;
2962{
2963 if (obj_aout_external_syms (abfd) != (struct external_nlist *) NULL)
2964 {
7ac84736 2965#ifdef USE_MMAP
4fe6d901 2966 bfd_free_window (&obj_aout_sym_window (abfd));
7ac84736
KR		 2967#else
2968 free ((PTR) obj_aout_external_syms (abfd));
2969#endif
4c3721d5
ILT		 2970 obj_aout_external_syms (abfd) = (struct external_nlist *) NULL;
2971 }
2972 if (obj_aout_external_strings (abfd) != (char *) NULL)
2973 {
7ac84736 2974#ifdef USE_MMAP
4fe6d901 2975 bfd_free_window (&obj_aout_string_window (abfd));
7ac84736
KR		 2976#else
2977 free ((PTR) obj_aout_external_strings (abfd));
2978#endif
4c3721d5
ILT		 2979 obj_aout_external_strings (abfd) = (char *) NULL;
2980 }
2981 return true;
2982}
2983
2984/* Look through the internal symbols to see if this object file should
2985 be included in the link. We should include this object file if it
2986 defines any symbols which are currently undefined. If this object
2987 file defines a common symbol, then we may adjust the size of the
2988 known symbol but we do not include the object file in the link
2989 (unless there is some other reason to include it). */
2990
2991static boolean
2992aout_link_check_ar_symbols (abfd, info, pneeded)
2993 bfd *abfd;
2994 struct bfd_link_info *info;
2995 boolean *pneeded;
2996{
2997 register struct external_nlist *p;
2998 struct external_nlist *pend;
2999 char *strings;
3000
3001 *pneeded = false;
3002
3003 /* Look through all the symbols. */
3004 p = obj_aout_external_syms (abfd);
3005 pend = p + obj_aout_external_sym_count (abfd);
3006 strings = obj_aout_external_strings (abfd);
3007 for (; p < pend; p++)
3008 {
3009 int type = bfd_h_get_8 (abfd, p->e_type);
3010 const char *name;
3011 struct bfd_link_hash_entry *h;
3012
4298e311
ILT		 3013 /* Ignore symbols that are not externally visible. This is an
3014 optimization only, as we check the type more thoroughly
3015 below. */
4587b578
ILT		 3016 if (((type & N_EXT) == 0
3017 || (type & N_STAB) != 0
3018 || type == N_FN)
4298e311
ILT		 3019 && type != N_WEAKA
3020 && type != N_WEAKT
3021 && type != N_WEAKD
3022 && type != N_WEAKB)
9b39ed6b
ILT		 3023 {
3024 if (type == N_WARNING
3025 || type == N_INDR)
3026 ++p;
3027 continue;
3028 }
4c3721d5
ILT		 3029
3030 name = strings + GET_WORD (abfd, p->e_strx);
3031 h = bfd_link_hash_lookup (info->hash, name, false, false, true);
3032
3033 /* We are only interested in symbols that are currently
3034 undefined or common. */
3035 if (h == (struct bfd_link_hash_entry *) NULL
3036 || (h->type != bfd_link_hash_undefined
3037 && h->type != bfd_link_hash_common))
9b39ed6b
ILT		 3038 {
3039 if (type == (N_INDR | N_EXT))
3040 ++p;
3041 continue;
3042 }
4c3721d5 3043
9b39ed6b
ILT		 3044 if (type == (N_TEXT | N_EXT)
3045 || type == (N_DATA | N_EXT)
3046 || type == (N_BSS | N_EXT)
3047 || type == (N_ABS | N_EXT)
3048 || type == (N_INDR | N_EXT))
4c3721d5
ILT		 3049 {
3050 /* This object file defines this symbol. We must link it
3051 in. This is true regardless of whether the current
3052 definition of the symbol is undefined or common. If the
3053 current definition is common, we have a case in which we
3054 have already seen an object file including
3055 int a;
3056 and this object file from the archive includes
3057 int a = 5;
f88c9008
ILT		 3058 In such a case we must include this object file.
3059
3060 FIXME: The SunOS 4.1.3 linker will pull in the archive
3061 element if the symbol is defined in the .data section,
3062 but not if it is defined in the .text section. That
3063 seems a bit crazy to me, and I haven't implemented it.
3064 However, it might be correct. */
4c3721d5
ILT		 3065 if (! (*info->callbacks->add_archive_element) (info, abfd, name))
3066 return false;
3067 *pneeded = true;
3068 return true;
3069 }
3070
9b39ed6b 3071 if (type == (N_UNDF | N_EXT))
4c3721d5
ILT		 3072 {
3073 bfd_vma value;
3074
3075 value = GET_WORD (abfd, p->e_value);
3076 if (value != 0)
3077 {
3078 /* This symbol is common in the object from the archive
3079 file. */
3080 if (h->type == bfd_link_hash_undefined)
3081 {
3082 bfd *symbfd;
e1f99f60 3083 unsigned int power;
4c3721d5
ILT		 3084
3085 symbfd = h->u.undef.abfd;
3086 if (symbfd == (bfd *) NULL)
3087 {
3088 /* This symbol was created as undefined from
3089 outside BFD. We assume that we should link
3090 in the object file. This is done for the -u
3091 option in the linker. */
3092 if (! (*info->callbacks->add_archive_element) (info,
3093 abfd,
3094 name))
3095 return false;
3096 *pneeded = true;
3097 return true;
3098 }
3099 /* Turn the current link symbol into a common
3100 symbol. It is already on the undefs list. */
3101 h->type = bfd_link_hash_common;
773033d2
ILT		 3102 h->u.c.p = ((struct bfd_link_hash_common_entry *)
3103 bfd_hash_allocate (&info->hash->table,
3104 sizeof (struct bfd_link_hash_common_entry)));
3105 if (h->u.c.p == NULL)
3106 return false;
3107
4c3721d5 3108 h->u.c.size = value;
e1f99f60
ILT		 3109
3110 /* FIXME: This isn't quite right. The maximum
3111 alignment of a common symbol should be set by the
3112 architecture of the output file, not of the input
3113 file. */
3114 power = bfd_log2 (value);
3115 if (power > bfd_get_arch_info (abfd)->section_align_power)
3116 power = bfd_get_arch_info (abfd)->section_align_power;
773033d2 3117 h->u.c.p->alignment_power = power;
e1f99f60 3118
773033d2
ILT		 3119 h->u.c.p->section = bfd_make_section_old_way (symbfd,
3120 "COMMON");
4c3721d5
ILT		 3121 }
3122 else
3123 {
3124 /* Adjust the size of the common symbol if
3125 necessary. */
3126 if (value > h->u.c.size)
3127 h->u.c.size = value;
3128 }
3129 }
3130 }
4298e311
ILT		 3131
3132 if (type == N_WEAKA
3133 || type == N_WEAKT
3134 || type == N_WEAKD
3135 || type == N_WEAKB)
3136 {
3137 /* This symbol is weak but defined. We must pull it in if
3138 the current link symbol is undefined, but we don't want
3139 it if the current link symbol is common. */
3140 if (h->type == bfd_link_hash_undefined)
3141 {
3142 if (! (*info->callbacks->add_archive_element) (info, abfd, name))
3143 return false;
3144 *pneeded = true;
3145 return true;
3146 }
3147 }
4c3721d5
ILT		 3148 }
3149
3150 /* We do not need this object file. */
3151 return true;
3152}
3153
3154/* Add all symbols from an object file to the hash table. */
3155
3156static boolean
3157aout_link_add_symbols (abfd, info)
3158 bfd *abfd;
3159 struct bfd_link_info *info;
3160{
e85e8bfe
ILT		 3161 boolean (*add_one_symbol) PARAMS ((struct bfd_link_info *, bfd *,
3162 const char *, flagword, asection *,
3163 bfd_vma, const char *, boolean,
3164 boolean,
3165 struct bfd_link_hash_entry **));
396aaeb2 3166 struct external_nlist *syms;
4c3721d5
ILT		 3167 bfd_size_type sym_count;
3168 char *strings;
3169 boolean copy;
3170 struct aout_link_hash_entry **sym_hash;
3171 register struct external_nlist *p;
3172 struct external_nlist *pend;
3173
396aaeb2 3174 syms = obj_aout_external_syms (abfd);
4c3721d5
ILT		 3175 sym_count = obj_aout_external_sym_count (abfd);
3176 strings = obj_aout_external_strings (abfd);
3177 if (info->keep_memory)
3178 copy = false;
3179 else
3180 copy = true;
3181
396aaeb2
ILT		 3182 if ((abfd->flags & DYNAMIC) != 0
3183 && aout_backend_info (abfd)->add_dynamic_symbols != NULL)
3184 {
3185 if (! ((*aout_backend_info (abfd)->add_dynamic_symbols)
3186 (abfd, info, &syms, &sym_count, &strings)))
3187 return false;
3188 }
3189
4c3721d5
ILT		 3190 /* We keep a list of the linker hash table entries that correspond
3191 to particular symbols. We could just look them up in the hash
3192 table, but keeping the list is more efficient. Perhaps this
3193 should be conditional on info->keep_memory. */
3194 sym_hash = ((struct aout_link_hash_entry **)
3195 bfd_alloc (abfd,
3196 ((size_t) sym_count
3197 * sizeof (struct aout_link_hash_entry *))));
e85e8bfe 3198 if (sym_hash == NULL && sym_count != 0)
a9713b91 3199 return false;
4c3721d5
ILT		 3200 obj_aout_sym_hashes (abfd) = sym_hash;
3201
e85e8bfe
ILT		 3202 add_one_symbol = aout_backend_info (abfd)->add_one_symbol;
3203 if (add_one_symbol == NULL)
3204 add_one_symbol = _bfd_generic_link_add_one_symbol;
3205
396aaeb2 3206 p = syms;
4c3721d5
ILT		 3207 pend = p + sym_count;
3208 for (; p < pend; p++, sym_hash++)
3209 {
3210 int type;
3211 const char *name;
3212 bfd_vma value;
3213 asection *section;
3214 flagword flags;
3215 const char *string;
3216
3217 *sym_hash = NULL;
3218
3219 type = bfd_h_get_8 (abfd, p->e_type);
3220
3221 /* Ignore debugging symbols. */
3222 if ((type & N_STAB) != 0)
3223 continue;
3224
4c3721d5
ILT		 3225 name = strings + GET_WORD (abfd, p->e_strx);
3226 value = GET_WORD (abfd, p->e_value);
3227 flags = BSF_GLOBAL;
3228 string = NULL;
3229 switch (type)
3230 {
3231 default:
3232 abort ();
4298e311
ILT		 3233
3234 case N_UNDF:
3235 case N_ABS:
3236 case N_TEXT:
3237 case N_DATA:
3238 case N_BSS:
3239 case N_FN_SEQ:
3240 case N_COMM:
3241 case N_SETV:
3242 case N_FN:
3243 /* Ignore symbols that are not externally visible. */
3244 continue;
3245 case N_INDR:
3246 /* Ignore local indirect symbol. */
3247 ++p;
3248 ++sym_hash;
3249 continue;
3250
4c3721d5 3251 case N_UNDF | N_EXT:
4298e311
ILT		 3252 if (value == 0)
3253 {
4587b578 3254 section = bfd_und_section_ptr;
4298e311
ILT		 3255 flags = 0;
3256 }
4c3721d5 3257 else
4587b578 3258 section = bfd_com_section_ptr;
4c3721d5
ILT		 3259 break;
3260 case N_ABS | N_EXT:
4587b578 3261 section = bfd_abs_section_ptr;
4c3721d5
ILT		 3262 break;
3263 case N_TEXT | N_EXT:
3264 section = obj_textsec (abfd);
3265 value -= bfd_get_section_vma (abfd, section);
3266 break;
3267 case N_DATA | N_EXT:
2cd086e3
ILT		 3268 case N_SETV | N_EXT:
3269 /* Treat N_SETV symbols as N_DATA symbol; see comment in
3270 translate_from_native_sym_flags. */
4c3721d5
ILT		 3271 section = obj_datasec (abfd);
3272 value -= bfd_get_section_vma (abfd, section);
3273 break;
3274 case N_BSS | N_EXT:
3275 section = obj_bsssec (abfd);
3276 value -= bfd_get_section_vma (abfd, section);
3277 break;
3278 case N_INDR | N_EXT:
3279 /* An indirect symbol. The next symbol is the symbol
3280 which this one really is. */
3281 BFD_ASSERT (p + 1 < pend);
3282 ++p;
3283 string = strings + GET_WORD (abfd, p->e_strx);
4587b578 3284 section = bfd_ind_section_ptr;
4c3721d5
ILT		 3285 flags |= BSF_INDIRECT;
3286 break;
3287 case N_COMM | N_EXT:
4587b578 3288 section = bfd_com_section_ptr;
4c3721d5 3289 break;
964affdc 3290 case N_SETA: case N_SETA | N_EXT:
4587b578 3291 section = bfd_abs_section_ptr;
4c3721d5
ILT		 3292 flags |= BSF_CONSTRUCTOR;
3293 break;
964affdc 3294 case N_SETT: case N_SETT | N_EXT:
4c3721d5
ILT		 3295 section = obj_textsec (abfd);
3296 flags |= BSF_CONSTRUCTOR;
3297 value -= bfd_get_section_vma (abfd, section);
3298 break;
964affdc 3299 case N_SETD: case N_SETD | N_EXT:
4c3721d5
ILT		 3300 section = obj_datasec (abfd);
3301 flags |= BSF_CONSTRUCTOR;
3302 value -= bfd_get_section_vma (abfd, section);
3303 break;
964affdc 3304 case N_SETB: case N_SETB | N_EXT:
4c3721d5
ILT		 3305 section = obj_bsssec (abfd);
3306 flags |= BSF_CONSTRUCTOR;
3307 value -= bfd_get_section_vma (abfd, section);
3308 break;
3309 case N_WARNING:
3310 /* A warning symbol. The next symbol is the one to warn
3311 about. */
3312 BFD_ASSERT (p + 1 < pend);
3313 ++p;
3314 string = name;
3315 name = strings + GET_WORD (abfd, p->e_strx);
4587b578 3316 section = bfd_und_section_ptr;
4c3721d5
ILT		 3317 flags |= BSF_WARNING;
3318 break;
4298e311 3319 case N_WEAKU:
4587b578 3320 section = bfd_und_section_ptr;
4298e311
ILT		 3321 flags = BSF_WEAK;
3322 break;
3323 case N_WEAKA:
4587b578 3324 section = bfd_abs_section_ptr;
4298e311
ILT		 3325 flags = BSF_WEAK;
3326 break;
3327 case N_WEAKT:
3328 section = obj_textsec (abfd);
3329 value -= bfd_get_section_vma (abfd, section);
3330 flags = BSF_WEAK;
3331 break;
3332 case N_WEAKD:
3333 section = obj_datasec (abfd);
3334 value -= bfd_get_section_vma (abfd, section);
3335 flags = BSF_WEAK;
3336 break;
3337 case N_WEAKB:
3338 section = obj_bsssec (abfd);
3339 value -= bfd_get_section_vma (abfd, section);
3340 flags = BSF_WEAK;
3341 break;
4c3721d5
ILT		 3342 }
3343
e85e8bfe 3344 if (! ((*add_one_symbol)
e68de5d5 3345 (info, abfd, name, flags, section, value, string, copy, false,
ec099b4b 3346 (struct bfd_link_hash_entry **) sym_hash)))
4c3721d5 3347 return false;
53155af1 3348
e1f99f60
ILT		 3349 /* Restrict the maximum alignment of a common symbol based on
3350 the architecture, since a.out has no way to represent
3351 alignment requirements of a section in a .o file. FIXME:
3352 This isn't quite right: it should use the architecture of the
3353 output file, not the input files. */
3354 if ((*sym_hash)->root.type == bfd_link_hash_common
773033d2 3355 && ((*sym_hash)->root.u.c.p->alignment_power >
e1f99f60 3356 bfd_get_arch_info (abfd)->section_align_power))
773033d2 3357 (*sym_hash)->root.u.c.p->alignment_power =
e1f99f60
ILT		 3358 bfd_get_arch_info (abfd)->section_align_power;
3359
f4945271
ILT		 3360 /* If this is a set symbol, and we are not building sets, then
3361 it is possible for the hash entry to not have been set. In
3362 such a case, treat the symbol as not globally defined. */
3363 if ((*sym_hash)->root.type == bfd_link_hash_new)
3364 {
3365 BFD_ASSERT ((flags & BSF_CONSTRUCTOR) != 0);
3366 *sym_hash = NULL;
3367 }
3368
53155af1
ILT		 3369 if (type == (N_INDR | N_EXT) || type == N_WARNING)
3370 ++sym_hash;
4c3721d5
ILT		 3371 }
3372
3373 return true;
3374}
14dc2f77
ILT		 3375\f
3376/* A hash table used for header files with N_BINCL entries. */
3377
3378struct aout_link_includes_table
3379{
3380 struct bfd_hash_table root;
3381};
3382
3383/* A linked list of totals that we have found for a particular header
3384 file. */
3385
3386struct aout_link_includes_totals
3387{
3388 struct aout_link_includes_totals *next;
3389 bfd_vma total;
3390};
3391
3392/* An entry in the header file hash table. */
3393
3394struct aout_link_includes_entry
3395{
3396 struct bfd_hash_entry root;
3397 /* List of totals we have found for this file. */
3398 struct aout_link_includes_totals *totals;
3399};
3400
3401/* Look up an entry in an the header file hash table. */
3402
3403#define aout_link_includes_lookup(table, string, create, copy) \
3404 ((struct aout_link_includes_entry *) \
3405 bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
4c3721d5
ILT		 3406
3407/* During the final link step we need to pass around a bunch of
3408 information, so we do it in an instance of this structure. */
3409
3410struct aout_final_link_info
3411{
3412 /* General link information. */
3413 struct bfd_link_info *info;
3414 /* Output bfd. */
3415 bfd *output_bfd;
3416 /* Reloc file positions. */
3417 file_ptr treloff, dreloff;
3418 /* File position of symbols. */
3419 file_ptr symoff;
3420 /* String table. */
1afd2380 3421 struct bfd_strtab_hash *strtab;
14dc2f77
ILT		 3422 /* Header file hash table. */
3423 struct aout_link_includes_table includes;
1afd2380
ILT		 3424 /* A buffer large enough to hold the contents of any section. */
3425 bfd_byte *contents;
3426 /* A buffer large enough to hold the relocs of any section. */
3427 PTR relocs;
3428 /* A buffer large enough to hold the symbol map of any input BFD. */
3429 int *symbol_map;
3430 /* A buffer large enough to hold output symbols of any input BFD. */
3431 struct external_nlist *output_syms;
4c3721d5
ILT		 3432};
3433
14dc2f77
ILT		 3434static struct bfd_hash_entry *aout_link_includes_newfunc
3435 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
4c3721d5
ILT		 3436static boolean aout_link_input_bfd
3437 PARAMS ((struct aout_final_link_info *, bfd *input_bfd));
3438static boolean aout_link_write_symbols
1afd2380 3439 PARAMS ((struct aout_final_link_info *, bfd *input_bfd));
4c3721d5
ILT		 3440static boolean aout_link_write_other_symbol
3441 PARAMS ((struct aout_link_hash_entry *, PTR));
3442static boolean aout_link_input_section
3443 PARAMS ((struct aout_final_link_info *, bfd *input_bfd,
3444 asection *input_section, file_ptr *reloff_ptr,
1afd2380 3445 bfd_size_type rel_size));
4c3721d5
ILT		 3446static boolean aout_link_input_section_std
3447 PARAMS ((struct aout_final_link_info *, bfd *input_bfd,
3448 asection *input_section, struct reloc_std_external *,
1afd2380 3449 bfd_size_type rel_size, bfd_byte *contents));
4c3721d5
ILT		 3450static boolean aout_link_input_section_ext
3451 PARAMS ((struct aout_final_link_info *, bfd *input_bfd,
3452 asection *input_section, struct reloc_ext_external *,
1afd2380 3453 bfd_size_type rel_size, bfd_byte *contents));
4c3721d5
ILT		 3454static INLINE asection *aout_reloc_index_to_section
3455 PARAMS ((bfd *, int));
ec099b4b
ILT		 3456static boolean aout_link_reloc_link_order
3457 PARAMS ((struct aout_final_link_info *, asection *,
3458 struct bfd_link_order *));
4c3721d5 3459
14dc2f77
ILT		 3460/* The function to create a new entry in the header file hash table. */
3461
3462static struct bfd_hash_entry *
3463aout_link_includes_newfunc (entry, table, string)
3464 struct bfd_hash_entry *entry;
3465 struct bfd_hash_table *table;
3466 const char *string;
3467{
3468 struct aout_link_includes_entry *ret =
3469 (struct aout_link_includes_entry *) entry;
3470
3471 /* Allocate the structure if it has not already been allocated by a
3472 subclass. */
3473 if (ret == (struct aout_link_includes_entry *) NULL)
3474 ret = ((struct aout_link_includes_entry *)
3475 bfd_hash_allocate (table,
3476 sizeof (struct aout_link_includes_entry)));
3477 if (ret == (struct aout_link_includes_entry *) NULL)
3478 return (struct bfd_hash_entry *) ret;
3479
3480 /* Call the allocation method of the superclass. */
3481 ret = ((struct aout_link_includes_entry *)
3482 bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string));
3483 if (ret)
3484 {
3485 /* Set local fields. */
3486 ret->totals = NULL;
3487 }
3488
3489 return (struct bfd_hash_entry *) ret;
3490}
3491
4c3721d5
ILT		 3492/* Do the final link step. This is called on the output BFD. The
3493 INFO structure should point to a list of BFDs linked through the
3494 link_next field which can be used to find each BFD which takes part
3495 in the output. Also, each section in ABFD should point to a list
3496 of bfd_link_order structures which list all the input sections for
3497 the output section. */
3498
3499boolean
3500NAME(aout,final_link) (abfd, info, callback)
3501 bfd *abfd;
3502 struct bfd_link_info *info;
3503 void (*callback) PARAMS ((bfd *, file_ptr *, file_ptr *, file_ptr *));
3504{
3505 struct aout_final_link_info aout_info;
14dc2f77 3506 boolean includes_hash_initialized = false;
4c3721d5 3507 register bfd *sub;
1afd2380
ILT		 3508 bfd_size_type trsize, drsize;
3509 size_t max_contents_size;
3510 size_t max_relocs_size;
3511 size_t max_sym_count;
4c3721d5
ILT		 3512 bfd_size_type text_size;
3513 file_ptr text_end;
3514 register struct bfd_link_order *p;
3515 asection *o;
ec099b4b 3516 boolean have_link_order_relocs;
4c3721d5 3517
ae115e51
ILT		 3518 if (info->shared)
3519 abfd->flags |= DYNAMIC;
3520
4c3721d5
ILT		 3521 aout_info.info = info;
3522 aout_info.output_bfd = abfd;
1afd2380
ILT		 3523 aout_info.contents = NULL;
3524 aout_info.relocs = NULL;
14dc2f77
ILT		 3525 aout_info.symbol_map = NULL;
3526 aout_info.output_syms = NULL;
3527
3528 if (! bfd_hash_table_init_n (&aout_info.includes.root,
3529 aout_link_includes_newfunc,
3530 251))
3531 goto error_return;
3532 includes_hash_initialized = true;
1afd2380
ILT		 3533
3534 /* Figure out the largest section size. Also, if generating
3535 relocateable output, count the relocs. */
3536 trsize = 0;
3537 drsize = 0;
3538 max_contents_size = 0;
3539 max_relocs_size = 0;
3540 max_sym_count = 0;
3541 for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
4c3721d5 3542 {
1afd2380 3543 size_t sz;
4c3721d5 3544
1afd2380 3545 if (info->relocateable)
4c3721d5 3546 {
6c8fa8e6 3547 if (bfd_get_flavour (sub) == bfd_target_aout_flavour)
4c3721d5
ILT		 3548 {
3549 trsize += exec_hdr (sub)->a_trsize;
3550 drsize += exec_hdr (sub)->a_drsize;
3551 }
3552 else
3553 {
3554 /* FIXME: We need to identify the .text and .data sections
3555 and call get_reloc_upper_bound and canonicalize_reloc to
3556 work out the number of relocs needed, and then multiply
3557 by the reloc size. */
a9713b91
ILT		 3558 (*_bfd_error_handler)
3559 ("%s: relocateable link from %s to %s not supported",
3560 bfd_get_filename (abfd),
3561 sub->xvec->name, abfd->xvec->name);
3562 bfd_set_error (bfd_error_invalid_operation);
3563 goto error_return;
4c3721d5
ILT		 3564 }
3565 }
1afd2380 3566
204ba9e3
ILT		 3567 if (bfd_get_flavour (sub) == bfd_target_aout_flavour)
3568 {
3569 sz = bfd_section_size (sub, obj_textsec (sub));
3570 if (sz > max_contents_size)
3571 max_contents_size = sz;
3572 sz = bfd_section_size (sub, obj_datasec (sub));
3573 if (sz > max_contents_size)
3574 max_contents_size = sz;
3575
3576 sz = exec_hdr (sub)->a_trsize;
3577 if (sz > max_relocs_size)
3578 max_relocs_size = sz;
3579 sz = exec_hdr (sub)->a_drsize;
3580 if (sz > max_relocs_size)
3581 max_relocs_size = sz;
3582
3583 sz = obj_aout_external_sym_count (sub);
3584 if (sz > max_sym_count)
3585 max_sym_count = sz;
3586 }
1afd2380
ILT		 3587 }
3588
3589 if (info->relocateable)
3590 {
ec6b18c4
ILT		 3591 if (obj_textsec (abfd) != (asection *) NULL)
3592 trsize += (_bfd_count_link_order_relocs (obj_textsec (abfd)
3593 ->link_order_head)
3594 * obj_reloc_entry_size (abfd));
ec6b18c4
ILT		 3595 if (obj_datasec (abfd) != (asection *) NULL)
3596 drsize += (_bfd_count_link_order_relocs (obj_datasec (abfd)
3597 ->link_order_head)
3598 * obj_reloc_entry_size (abfd));
4c3721d5
ILT		 3599 }
3600
1afd2380
ILT		 3601 exec_hdr (abfd)->a_trsize = trsize;
3602 exec_hdr (abfd)->a_drsize = drsize;
3603
964affdc
DM		 3604 exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd);
3605
4c3721d5
ILT		 3606 /* Adjust the section sizes and vmas according to the magic number.
3607 This sets a_text, a_data and a_bss in the exec_hdr and sets the
3608 filepos for each section. */
3609 if (! NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end))
1afd2380 3610 goto error_return;
4c3721d5
ILT		 3611
3612 /* The relocation and symbol file positions differ among a.out
3613 targets. We are passed a callback routine from the backend
3614 specific code to handle this.
3615 FIXME: At this point we do not know how much space the symbol
3616 table will require. This will not work for any (nonstandard)
3617 a.out target that needs to know the symbol table size before it
3618 can compute the relocation file positions. This may or may not
3619 be the case for the hp300hpux target, for example. */
3620 (*callback) (abfd, &aout_info.treloff, &aout_info.dreloff,
3621 &aout_info.symoff);
3622 obj_textsec (abfd)->rel_filepos = aout_info.treloff;
3623 obj_datasec (abfd)->rel_filepos = aout_info.dreloff;
3624 obj_sym_filepos (abfd) = aout_info.symoff;
3625
3626 /* We keep a count of the symbols as we output them. */
3627 obj_aout_external_sym_count (abfd) = 0;
3628
3629 /* We accumulate the string table as we write out the symbols. */
1afd2380
ILT		 3630 aout_info.strtab = _bfd_stringtab_init ();
3631 if (aout_info.strtab == NULL)
3632 goto error_return;
3633
3634 /* Allocate buffers to hold section contents and relocs. */
58142f10
ILT		 3635 aout_info.contents = (bfd_byte *) bfd_malloc (max_contents_size);
3636 aout_info.relocs = (PTR) bfd_malloc (max_relocs_size);
3637 aout_info.symbol_map = (int *) bfd_malloc (max_sym_count * sizeof (int *));
1afd2380 3638 aout_info.output_syms = ((struct external_nlist *)
58142f10
ILT		 3639 bfd_malloc ((max_sym_count + 1)
3640 * sizeof (struct external_nlist)));
1afd2380
ILT		 3641 if ((aout_info.contents == NULL && max_contents_size != 0)
3642 || (aout_info.relocs == NULL && max_relocs_size != 0)
3643 || (aout_info.symbol_map == NULL && max_sym_count != 0)
3644 || aout_info.output_syms == NULL)
58142f10 3645 goto error_return;
4c3721d5 3646
34e9ffbc
NH		 3647 /* If we have a symbol named __DYNAMIC, force it out now. This is
3648 required by SunOS. Doing this here rather than in sunos.c is a
3649 hack, but it's easier than exporting everything which would be
3650 needed. */
3651 {
3652 struct aout_link_hash_entry *h;
3653
3654 h = aout_link_hash_lookup (aout_hash_table (info), "__DYNAMIC",
3655 false, false, false);
3656 if (h != NULL)
3657 aout_link_write_other_symbol (h, &aout_info);
3658 }
3659
4c3721d5
ILT		 3660 /* The most time efficient way to do the link would be to read all
3661 the input object files into memory and then sort out the
3662 information into the output file. Unfortunately, that will
3663 probably use too much memory. Another method would be to step
3664 through everything that composes the text section and write it
3665 out, and then everything that composes the data section and write
3666 it out, and then write out the relocs, and then write out the
3667 symbols. Unfortunately, that requires reading stuff from each
3668 input file several times, and we will not be able to keep all the
3669 input files open simultaneously, and reopening them will be slow.
3670
3671 What we do is basically process one input file at a time. We do
3672 everything we need to do with an input file once--copy over the
3673 section contents, handle the relocation information, and write
3674 out the symbols--and then we throw away the information we read
3675 from it. This approach requires a lot of lseeks of the output
3676 file, which is unfortunate but still faster than reopening a lot
3677 of files.
3678
3679 We use the output_has_begun field of the input BFDs to see
3680 whether we have already handled it. */
3681 for (sub = info->input_bfds; sub != (bfd *) NULL; sub = sub->link_next)
3682 sub->output_has_begun = false;
3683
7ec49f91
ILT		 3684 /* Mark all sections which are to be included in the link. This
3685 will normally be every section. We need to do this so that we
3686 can identify any sections which the linker has decided to not
3687 include. */
3688 for (o = abfd->sections; o != NULL; o = o->next)
3689 {
3690 for (p = o->link_order_head; p != NULL; p = p->next)
3691 {
3692 if (p->type == bfd_indirect_link_order)
ff0e4a93 3693 p->u.indirect.section->linker_mark = true;
7ec49f91
ILT		 3694 }
3695 }
3696
ec099b4b 3697 have_link_order_relocs = false;
4c3721d5
ILT		 3698 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
3699 {
4c3721d5
ILT		 3700 for (p = o->link_order_head;
3701 p != (struct bfd_link_order *) NULL;
3702 p = p->next)
3703 {
e68de5d5
ILT		 3704 if (p->type == bfd_indirect_link_order
3705 && (bfd_get_flavour (p->u.indirect.section->owner)
3706 == bfd_target_aout_flavour))
4c3721d5 3707 {
e68de5d5
ILT		 3708 bfd *input_bfd;
3709
4c3721d5 3710 input_bfd = p->u.indirect.section->owner;
e68de5d5 3711 if (! input_bfd->output_has_begun)
4c3721d5 3712 {
e68de5d5 3713 if (! aout_link_input_bfd (&aout_info, input_bfd))
1afd2380 3714 goto error_return;
e68de5d5 3715 input_bfd->output_has_begun = true;
4c3721d5 3716 }
e68de5d5 3717 }
ec099b4b
ILT		 3718 else if (p->type == bfd_section_reloc_link_order
3719 || p->type == bfd_symbol_reloc_link_order)
3720 {
3721 /* These are handled below. */
3722 have_link_order_relocs = true;
3723 }
e68de5d5
ILT		 3724 else
3725 {
4c3721d5 3726 if (! _bfd_default_link_order (abfd, info, o, p))
1afd2380 3727 goto error_return;
4c3721d5
ILT		 3728 }
3729 }
3730 }
3731
3732 /* Write out any symbols that we have not already written out. */
3733 aout_link_hash_traverse (aout_hash_table (info),
3734 aout_link_write_other_symbol,
3735 (PTR) &aout_info);
3736
ec099b4b
ILT		 3737 /* Now handle any relocs we were asked to create by the linker.
3738 These did not come from any input file. We must do these after
3739 we have written out all the symbols, so that we know the symbol
3740 indices to use. */
3741 if (have_link_order_relocs)
3742 {
3743 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
3744 {
3745 for (p = o->link_order_head;
3746 p != (struct bfd_link_order *) NULL;
3747 p = p->next)
3748 {
3749 if (p->type == bfd_section_reloc_link_order
3750 || p->type == bfd_symbol_reloc_link_order)
3751 {
3752 if (! aout_link_reloc_link_order (&aout_info, o, p))
1afd2380 3753 goto error_return;
ec099b4b
ILT		 3754 }
3755 }
3756 }
3757 }
3758
1afd2380
ILT		 3759 if (aout_info.contents != NULL)
3760 {
3761 free (aout_info.contents);
3762 aout_info.contents = NULL;
3763 }
3764 if (aout_info.relocs != NULL)
3765 {
3766 free (aout_info.relocs);
3767 aout_info.relocs = NULL;
3768 }
3769 if (aout_info.symbol_map != NULL)
3770 {
3771 free (aout_info.symbol_map);
3772 aout_info.symbol_map = NULL;
3773 }
3774 if (aout_info.output_syms != NULL)
3775 {
3776 free (aout_info.output_syms);
3777 aout_info.output_syms = NULL;
3778 }
14dc2f77
ILT		 3779 if (includes_hash_initialized)
3780 {
3781 bfd_hash_table_free (&aout_info.includes.root);
3782 includes_hash_initialized = false;
3783 }
1afd2380 3784
e85e8bfe
ILT		 3785 /* Finish up any dynamic linking we may be doing. */
3786 if (aout_backend_info (abfd)->finish_dynamic_link != NULL)
3787 {
3788 if (! (*aout_backend_info (abfd)->finish_dynamic_link) (abfd, info))
1afd2380 3789 goto error_return;
e85e8bfe
ILT		 3790 }
3791
4c3721d5
ILT		 3792 /* Update the header information. */
3793 abfd->symcount = obj_aout_external_sym_count (abfd);
3794 exec_hdr (abfd)->a_syms = abfd->symcount * EXTERNAL_NLIST_SIZE;
3795 obj_str_filepos (abfd) = obj_sym_filepos (abfd) + exec_hdr (abfd)->a_syms;
3796 obj_textsec (abfd)->reloc_count =
3797 exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd);
3798 obj_datasec (abfd)->reloc_count =
3799 exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd);
3800
3801 /* Write out the string table. */
3802 if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0)
1afd2380
ILT		 3803 goto error_return;
3804 return emit_stringtab (abfd, aout_info.strtab);
3805
3806 error_return:
3807 if (aout_info.contents != NULL)
3808 free (aout_info.contents);
3809 if (aout_info.relocs != NULL)
3810 free (aout_info.relocs);
3811 if (aout_info.symbol_map != NULL)
3812 free (aout_info.symbol_map);
3813 if (aout_info.output_syms != NULL)
3814 free (aout_info.output_syms);
14dc2f77
ILT		 3815 if (includes_hash_initialized)
3816 bfd_hash_table_free (&aout_info.includes.root);
1afd2380 3817 return false;
4c3721d5
ILT		 3818}
3819
3820/* Link an a.out input BFD into the output file. */
3821
3822static boolean
3823aout_link_input_bfd (finfo, input_bfd)
3824 struct aout_final_link_info *finfo;
3825 bfd *input_bfd;
3826{
3827 bfd_size_type sym_count;
4c3721d5
ILT		 3828
3829 BFD_ASSERT (bfd_get_format (input_bfd) == bfd_object);
3830
e85e8bfe
ILT		 3831 /* If this is a dynamic object, it may need special handling. */
3832 if ((input_bfd->flags & DYNAMIC) != 0
3833 && aout_backend_info (input_bfd)->link_dynamic_object != NULL)
3834 {
3835 return ((*aout_backend_info (input_bfd)->link_dynamic_object)
3836 (finfo->info, input_bfd));
3837 }
3838
4c3721d5
ILT		 3839 /* Get the symbols. We probably have them already, unless
3840 finfo->info->keep_memory is false. */
5c8444f8 3841 if (! aout_get_external_symbols (input_bfd))
4c3721d5
ILT		 3842 return false;
3843
3844 sym_count = obj_aout_external_sym_count (input_bfd);
4c3721d5 3845
1afd2380
ILT		 3846 /* Write out the symbols and get a map of the new indices. The map
3847 is placed into finfo->symbol_map. */
3848 if (! aout_link_write_symbols (finfo, input_bfd))
3849 return false;
4c3721d5 3850
1afd2380 3851 /* Relocate and write out the sections. These functions use the
ff0e4a93
ILT		 3852 symbol map created by aout_link_write_symbols. The linker_mark
3853 field will be set if these sections are to be included in the
3854 link, which will normally be the case. */
3855 if (obj_textsec (input_bfd)->linker_mark)
7ec49f91
ILT		 3856 {
3857 if (! aout_link_input_section (finfo, input_bfd,
3858 obj_textsec (input_bfd),
3859 &finfo->treloff,
3860 exec_hdr (input_bfd)->a_trsize))
3861 return false;
3862 }
ff0e4a93 3863 if (obj_datasec (input_bfd)->linker_mark)
7ec49f91
ILT		 3864 {
3865 if (! aout_link_input_section (finfo, input_bfd,
3866 obj_datasec (input_bfd),
3867 &finfo->dreloff,
3868 exec_hdr (input_bfd)->a_drsize))
3869 return false;
3870 }
4c3721d5
ILT		 3871
3872 /* If we are not keeping memory, we don't need the symbols any
3873 longer. We still need them if we are keeping memory, because the
3874 strings in the hash table point into them. */
3875 if (! finfo->info->keep_memory)
3876 {
3877 if (! aout_link_free_symbols (input_bfd))
1afd2380 3878 return false;
4c3721d5
ILT		 3879 }
3880
3881 return true;
3882}
3883
3884/* Adjust and write out the symbols for an a.out file. Set the new
3885 symbol indices into a symbol_map. */
3886
3887static boolean
1afd2380 3888aout_link_write_symbols (finfo, input_bfd)
4c3721d5
ILT		 3889 struct aout_final_link_info *finfo;
3890 bfd *input_bfd;
4c3721d5
ILT		 3891{
3892 bfd *output_bfd;
3893 bfd_size_type sym_count;
3894 char *strings;
3895 enum bfd_link_strip strip;
3896 enum bfd_link_discard discard;
4c3721d5 3897 struct external_nlist *outsym;
d17fc4c9 3898 bfd_size_type strtab_index;
4c3721d5
ILT		 3899 register struct external_nlist *sym;
3900 struct external_nlist *sym_end;
3901 struct aout_link_hash_entry **sym_hash;
1afd2380 3902 int *symbol_map;
4c3721d5 3903 boolean pass;
ab0434c2 3904 boolean skip_next;
4c3721d5
ILT		 3905
3906 output_bfd = finfo->output_bfd;
3907 sym_count = obj_aout_external_sym_count (input_bfd);
3908 strings = obj_aout_external_strings (input_bfd);
3909 strip = finfo->info->strip;
3910 discard = finfo->info->discard;
1afd2380 3911 outsym = finfo->output_syms;
4c3721d5
ILT		 3912
3913 /* First write out a symbol for this object file, unless we are
3914 discarding such symbols. */
3915 if (strip != strip_all
3916 && (strip != strip_some
3917 || bfd_hash_lookup (finfo->info->keep_hash, input_bfd->filename,
3918 false, false) != NULL)
3919 && discard != discard_all)
3920 {
3921 bfd_h_put_8 (output_bfd, N_TEXT, outsym->e_type);
3922 bfd_h_put_8 (output_bfd, 0, outsym->e_other);
3923 bfd_h_put_16 (output_bfd, (bfd_vma) 0, outsym->e_desc);
1afd2380 3924 strtab_index = add_to_stringtab (output_bfd, finfo->strtab,
d17fc4c9
ILT		 3925 input_bfd->filename, false);
3926 if (strtab_index == (bfd_size_type) -1)
1afd2380 3927 return false;
d17fc4c9 3928 PUT_WORD (output_bfd, strtab_index, outsym->e_strx);
4c3721d5 3929 PUT_WORD (output_bfd,
2edc8357
ILT		 3930 (bfd_get_section_vma (output_bfd,
3931 obj_textsec (input_bfd)->output_section)
3932 + obj_textsec (input_bfd)->output_offset),
4c3721d5
ILT		 3933 outsym->e_value);
3934 ++obj_aout_external_sym_count (output_bfd);
3935 ++outsym;
3936 }
3937
3938 pass = false;
ab0434c2 3939 skip_next = false;
4c3721d5
ILT		 3940 sym = obj_aout_external_syms (input_bfd);
3941 sym_end = sym + sym_count;
3942 sym_hash = obj_aout_sym_hashes (input_bfd);
1afd2380 3943 symbol_map = finfo->symbol_map;
14dc2f77 3944 memset (symbol_map, 0, sym_count * sizeof *symbol_map);
4c3721d5
ILT		 3945 for (; sym < sym_end; sym++, sym_hash++, symbol_map++)
3946 {
3947 const char *name;
3948 int type;
d6d6b18a 3949 struct aout_link_hash_entry *h;
4c3721d5
ILT		 3950 boolean skip;
3951 asection *symsec;
3952 bfd_vma val = 0;
d17fc4c9 3953 boolean copy;
4c3721d5 3954
14dc2f77
ILT		 3955 /* We set *symbol_map to 0 above for all symbols. If it has
3956 already been set to -1 for this symbol, it means that we are
3957 discarding it because it appears in a duplicate header file.
3958 See the N_BINCL code below. */
3959 if (*symbol_map == -1)
3960 continue;
3961
3962 /* Initialize *symbol_map to -1, which means that the symbol was
3963 not copied into the output file. We will change it later if
3964 we do copy the symbol over. */
4c3721d5
ILT		 3965 *symbol_map = -1;
3966
3967 type = bfd_h_get_8 (input_bfd, sym->e_type);
3968 name = strings + GET_WORD (input_bfd, sym->e_strx);
3969
d6d6b18a
ILT		 3970 h = NULL;
3971
4c3721d5
ILT		 3972 if (pass)
3973 {
53155af1
ILT		 3974 /* Pass this symbol through. It is the target of an
3975 indirect or warning symbol. */
4c3721d5
ILT		 3976 val = GET_WORD (input_bfd, sym->e_value);
3977 pass = false;
3978 }
ab0434c2 3979 else if (skip_next)
53155af1
ILT		 3980 {
3981 /* Skip this symbol, which is the target of an indirect
3982 symbol that we have changed to no longer be an indirect
3983 symbol. */
ab0434c2 3984 skip_next = false;
53155af1
ILT		 3985 continue;
3986 }
4c3721d5
ILT		 3987 else
3988 {
53155af1 3989 struct aout_link_hash_entry *hresolve;
4c3721d5
ILT		 3990
3991 /* We have saved the hash table entry for this symbol, if
3992 there is one. Note that we could just look it up again
3993 in the hash table, provided we first check that it is an
3994 external symbol. */
3995 h = *sym_hash;
3996
7ec49f91
ILT		 3997 /* Use the name from the hash table, in case the symbol was
3998 wrapped. */
3999 if (h != NULL)
4000 name = h->root.root.string;
4001
3a5b50f4
ILT		 4002 /* If this is an indirect or warning symbol, then change
4003 hresolve to the base symbol. We also change *sym_hash so
4004 that the relocation routines relocate against the real
4005 symbol. */
53155af1
ILT		 4006 hresolve = h;
4007 if (h != (struct aout_link_hash_entry *) NULL
3a5b50f4
ILT		 4008 && (h->root.type == bfd_link_hash_indirect
4009 || h->root.type == bfd_link_hash_warning))
53155af1
ILT		 4010 {
4011 hresolve = (struct aout_link_hash_entry *) h->root.u.i.link;
118e8d1c
ILT		 4012 while (hresolve->root.type == bfd_link_hash_indirect
4013 || hresolve->root.type == bfd_link_hash_warning)
53155af1
ILT		 4014 hresolve = ((struct aout_link_hash_entry *)
4015 hresolve->root.u.i.link);
4016 *sym_hash = hresolve;
4017 }
4018
4c3721d5
ILT		 4019 /* If the symbol has already been written out, skip it. */
4020 if (h != (struct aout_link_hash_entry *) NULL
e85e8bfe 4021 && h->root.type != bfd_link_hash_warning
35fee729 4022 && h->written)
4c3721d5 4023 {
ab0434c2
ILT		 4024 if ((type & N_TYPE) == N_INDR
4025 || type == N_WARNING)
4026 skip_next = true;
4c3721d5
ILT		 4027 *symbol_map = h->indx;
4028 continue;
4029 }
4030
4031 /* See if we are stripping this symbol. */
4032 skip = false;
4033 switch (strip)
4034 {
4035 case strip_none:
4036 break;
4037 case strip_debugger:
4038 if ((type & N_STAB) != 0)
4039 skip = true;
4040 break;
4041 case strip_some:
4042 if (bfd_hash_lookup (finfo->info->keep_hash, name, false, false)
4043 == NULL)
4044 skip = true;
4045 break;
4046 case strip_all:
4047 skip = true;
4048 break;
4049 }
4050 if (skip)
4051 {
4052 if (h != (struct aout_link_hash_entry *) NULL)
35fee729 4053 h->written = true;
4c3721d5
ILT		 4054 continue;
4055 }
4056
4057 /* Get the value of the symbol. */
4298e311
ILT		 4058 if ((type & N_TYPE) == N_TEXT
4059 || type == N_WEAKT)
4c3721d5 4060 symsec = obj_textsec (input_bfd);
4298e311
ILT		 4061 else if ((type & N_TYPE) == N_DATA
4062 || type == N_WEAKD)
4c3721d5 4063 symsec = obj_datasec (input_bfd);
4298e311
ILT		 4064 else if ((type & N_TYPE) == N_BSS
4065 || type == N_WEAKB)
4c3721d5 4066 symsec = obj_bsssec (input_bfd);
4298e311
ILT		 4067 else if ((type & N_TYPE) == N_ABS
4068 || type == N_WEAKA)
4587b578 4069 symsec = bfd_abs_section_ptr;
53155af1
ILT		 4070 else if (((type & N_TYPE) == N_INDR
4071 && (hresolve == (struct aout_link_hash_entry *) NULL
4072 || (hresolve->root.type != bfd_link_hash_defined
6c97aedf 4073 && hresolve->root.type != bfd_link_hash_defweak
53155af1 4074 && hresolve->root.type != bfd_link_hash_common)))
4c3721d5
ILT		 4075 || type == N_WARNING)
4076 {
53155af1
ILT		 4077 /* Pass the next symbol through unchanged. The
4078 condition above for indirect symbols is so that if
4079 the indirect symbol was defined, we output it with
4080 the correct definition so the debugger will
4081 understand it. */
4c3721d5
ILT		 4082 pass = true;
4083 val = GET_WORD (input_bfd, sym->e_value);
4084 symsec = NULL;
4085 }
4086 else if ((type & N_STAB) != 0)
4087 {
4088 val = GET_WORD (input_bfd, sym->e_value);
4089 symsec = NULL;
4090 }
4091 else
4092 {
53155af1
ILT		 4093 /* If we get here with an indirect symbol, it means that
4094 we are outputting it with a real definition. In such
4095 a case we do not want to output the next symbol,
4096 which is the target of the indirection. */
4097 if ((type & N_TYPE) == N_INDR)
ab0434c2 4098 skip_next = true;
53155af1 4099
f4945271
ILT		 4100 symsec = NULL;
4101
53155af1
ILT		 4102 /* We need to get the value from the hash table. We use
4103 hresolve so that if we have defined an indirect
4104 symbol we output the final definition. */
4c3721d5 4105 if (h == (struct aout_link_hash_entry *) NULL)
f4945271
ILT		 4106 {
4107 switch (type & N_TYPE)
4108 {
4109 case N_SETT:
4110 symsec = obj_textsec (input_bfd);
4111 break;
4112 case N_SETD:
4113 symsec = obj_datasec (input_bfd);
4114 break;
4115 case N_SETB:
4116 symsec = obj_bsssec (input_bfd);
4117 break;
4118 case N_SETA:
4119 symsec = bfd_abs_section_ptr;
4120 break;
4121 default:
4122 val = 0;
4123 break;
4124 }
4125 }
6c97aedf
ILT		 4126 else if (hresolve->root.type == bfd_link_hash_defined
4127 || hresolve->root.type == bfd_link_hash_defweak)
4c3721d5 4128 {
53155af1 4129 asection *input_section;
4c3721d5
ILT		 4130 asection *output_section;
4131
6c97aedf
ILT		 4132 /* This case usually means a common symbol which was
4133 turned into a defined symbol. */
53155af1
ILT		 4134 input_section = hresolve->root.u.def.section;
4135 output_section = input_section->output_section;
4587b578 4136 BFD_ASSERT (bfd_is_abs_section (output_section)
4c3721d5 4137 || output_section->owner == output_bfd);
53155af1 4138 val = (hresolve->root.u.def.value
4c3721d5 4139 + bfd_get_section_vma (output_bfd, output_section)
53155af1 4140 + input_section->output_offset);
4c3721d5
ILT		 4141
4142 /* Get the correct type based on the section. If
4143 this is a constructed set, force it to be
4144 globally visible. */
4145 if (type == N_SETT
4146 || type == N_SETD
4147 || type == N_SETB
4148 || type == N_SETA)
4149 type |= N_EXT;
4150
4151 type &=~ N_TYPE;
4152
4153 if (output_section == obj_textsec (output_bfd))
6c97aedf
ILT		 4154 type |= (hresolve->root.type == bfd_link_hash_defined
4155 ? N_TEXT
4156 : N_WEAKT);
4c3721d5 4157 else if (output_section == obj_datasec (output_bfd))
6c97aedf
ILT		 4158 type |= (hresolve->root.type == bfd_link_hash_defined
4159 ? N_DATA
4160 : N_WEAKD);
4c3721d5 4161 else if (output_section == obj_bsssec (output_bfd))
6c97aedf
ILT		 4162 type |= (hresolve->root.type == bfd_link_hash_defined
4163 ? N_BSS
4164 : N_WEAKB);
4c3721d5 4165 else
6c97aedf
ILT		 4166 type |= (hresolve->root.type == bfd_link_hash_defined
4167 ? N_ABS
4168 : N_WEAKA);
4c3721d5 4169 }
53155af1
ILT		 4170 else if (hresolve->root.type == bfd_link_hash_common)
4171 val = hresolve->root.u.c.size;
6c97aedf 4172 else if (hresolve->root.type == bfd_link_hash_undefweak)
4298e311
ILT		 4173 {
4174 val = 0;
4175 type = N_WEAKU;
4176 }
4c3721d5
ILT		 4177 else
4178 val = 0;
4c3721d5
ILT		 4179 }
4180 if (symsec != (asection *) NULL)
4181 val = (symsec->output_section->vma
4182 + symsec->output_offset
4183 + (GET_WORD (input_bfd, sym->e_value)
4184 - symsec->vma));
4185
4186 /* If this is a global symbol set the written flag, and if
4187 it is a local symbol see if we should discard it. */
4188 if (h != (struct aout_link_hash_entry *) NULL)
4189 {
35fee729 4190 h->written = true;
4c3721d5
ILT		 4191 h->indx = obj_aout_external_sym_count (output_bfd);
4192 }
f4945271
ILT		 4193 else if ((type & N_TYPE) != N_SETT
4194 && (type & N_TYPE) != N_SETD
4195 && (type & N_TYPE) != N_SETB
4196 && (type & N_TYPE) != N_SETA)
4c3721d5
ILT		 4197 {
4198 switch (discard)
4199 {
4200 case discard_none:
4201 break;
4202 case discard_l:
4203 if (*name == *finfo->info->lprefix
4204 && (finfo->info->lprefix_len == 1
4205 || strncmp (name, finfo->info->lprefix,
4206 finfo->info->lprefix_len) == 0))
4207 skip = true;
4208 break;
4209 case discard_all:
4210 skip = true;
4211 break;
4212 }
4213 if (skip)
4214 {
4215 pass = false;
4216 continue;
4217 }
4218 }
14dc2f77
ILT		 4219
4220 /* An N_BINCL symbol indicates the start of the stabs
4221 entries for a header file. We need to scan ahead to the
4222 next N_EINCL symbol, ignoring nesting, adding up all the
4223 characters in the symbol names, not including the file
4224 numbers in types (the first number after an open
4225 parenthesis). */
4226 if (type == N_BINCL)
4227 {
4228 struct external_nlist *incl_sym;
4229 int nest;
4230 struct aout_link_includes_entry *incl_entry;
4231 struct aout_link_includes_totals *t;
4232
4233 val = 0;
4234 nest = 0;
4235 for (incl_sym = sym + 1; incl_sym < sym_end; incl_sym++)
4236 {
4237 int incl_type;
4238
4239 incl_type = bfd_h_get_8 (input_bfd, incl_sym->e_type);
4240 if (incl_type == N_EINCL)
4241 {
4242 if (nest == 0)
4243 break;
4244 --nest;
4245 }
4246 else if (incl_type == N_BINCL)
4247 ++nest;
4248 else if (nest == 0)
4249 {
4250 const char *s;
4251
4252 s = strings + GET_WORD (input_bfd, incl_sym->e_strx);
4253 for (; *s != '\0'; s++)
4254 {
4255 val += *s;
4256 if (*s == '(')
4257 {
4258 /* Skip the file number. */
4259 ++s;
4260 while (isdigit ((unsigned char) *s))
4261 ++s;
4262 --s;
4263 }
4264 }
4265 }
4266 }
4267
4268 /* If we have already included a header file with the
4269 same value, then replace this one with an N_EXCL
4270 symbol. */
4271 copy = ! finfo->info->keep_memory;
4272 incl_entry = aout_link_includes_lookup (&finfo->includes,
4273 name, true, copy);
4274 if (incl_entry == NULL)
4275 return false;
4276 for (t = incl_entry->totals; t != NULL; t = t->next)
4277 if (t->total == val)
4278 break;
4279 if (t == NULL)
4280 {
4281 /* This is the first time we have seen this header
4282 file with this set of stabs strings. */
4283 t = ((struct aout_link_includes_totals *)
4284 bfd_hash_allocate (&finfo->includes.root,
4285 sizeof *t));
4286 if (t == NULL)
4287 return false;
4288 t->total = val;
4289 t->next = incl_entry->totals;
4290 incl_entry->totals = t;
4291 }
4292 else
4293 {
4294 int *incl_map;
4295
4296 /* This is a duplicate header file. We must change
4297 it to be an N_EXCL entry, and mark all the
4298 included symbols to prevent outputting them. */
4299 type = N_EXCL;
4300
4301 nest = 0;
4302 for (incl_sym = sym + 1, incl_map = symbol_map + 1;
4303 incl_sym < sym_end;
4304 incl_sym++, incl_map++)
4305 {
4306 int incl_type;
4307
4308 incl_type = bfd_h_get_8 (input_bfd, incl_sym->e_type);
4309 if (incl_type == N_EINCL)
4310 {
4311 if (nest == 0)
4312 {
4313 *incl_map = -1;
4314 break;
4315 }
4316 --nest;
4317 }
4318 else if (incl_type == N_BINCL)
4319 ++nest;
4320 else if (nest == 0)
4321 *incl_map = -1;
4322 }
4323 }
4324 }
4c3721d5
ILT		 4325 }
4326
4327 /* Copy this symbol into the list of symbols we are going to
4328 write out. */
4329 bfd_h_put_8 (output_bfd, type, outsym->e_type);
4330 bfd_h_put_8 (output_bfd, bfd_h_get_8 (input_bfd, sym->e_other),
4331 outsym->e_other);
4332 bfd_h_put_16 (output_bfd, bfd_h_get_16 (input_bfd, sym->e_desc),
4333 outsym->e_desc);
d17fc4c9 4334 copy = false;
d6d6b18a
ILT		 4335 if (! finfo->info->keep_memory)
4336 {
4337 /* name points into a string table which we are going to
4338 free. If there is a hash table entry, use that string.
4339 Otherwise, copy name into memory. */
4340 if (h != (struct aout_link_hash_entry *) NULL)
1afd2380 4341 name = h->root.root.string;
d6d6b18a 4342 else
d17fc4c9 4343 copy = true;
d6d6b18a 4344 }
1afd2380 4345 strtab_index = add_to_stringtab (output_bfd, finfo->strtab,
d17fc4c9
ILT		 4346 name, copy);
4347 if (strtab_index == (bfd_size_type) -1)
1afd2380 4348 return false;
d17fc4c9 4349 PUT_WORD (output_bfd, strtab_index, outsym->e_strx);
4c3721d5
ILT		 4350 PUT_WORD (output_bfd, val, outsym->e_value);
4351 *symbol_map = obj_aout_external_sym_count (output_bfd);
4352 ++obj_aout_external_sym_count (output_bfd);
4353 ++outsym;
4354 }
4355
4356 /* Write out the output symbols we have just constructed. */
1afd2380 4357 if (outsym > finfo->output_syms)
4c3721d5
ILT		 4358 {
4359 bfd_size_type outsym_count;
4360
4361 if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0)
1afd2380
ILT		 4362 return false;
4363 outsym_count = outsym - finfo->output_syms;
4364 if (bfd_write ((PTR) finfo->output_syms,
4365 (bfd_size_type) EXTERNAL_NLIST_SIZE,
4c3721d5
ILT		 4366 (bfd_size_type) outsym_count, output_bfd)
4367 != outsym_count * EXTERNAL_NLIST_SIZE)
1afd2380 4368 return false;
4c3721d5
ILT		 4369 finfo->symoff += outsym_count * EXTERNAL_NLIST_SIZE;
4370 }
4371
4372 return true;
4373}
4374
4375/* Write out a symbol that was not associated with an a.out input
4376 object. */
4377
4378static boolean
4379aout_link_write_other_symbol (h, data)
4380 struct aout_link_hash_entry *h;
4381 PTR data;
4382{
4383 struct aout_final_link_info *finfo = (struct aout_final_link_info *) data;
4384 bfd *output_bfd;
4385 int type;
4386 bfd_vma val;
4387 struct external_nlist outsym;
d17fc4c9 4388 bfd_size_type indx;
4c3721d5 4389
e85e8bfe
ILT		 4390 output_bfd = finfo->output_bfd;
4391
4392 if (aout_backend_info (output_bfd)->write_dynamic_symbol != NULL)
4393 {
4394 if (! ((*aout_backend_info (output_bfd)->write_dynamic_symbol)
4395 (output_bfd, finfo->info, h)))
4396 {
4397 /* FIXME: No way to handle errors. */
4398 abort ();
4399 }
4400 }
4401
35fee729 4402 if (h->written)
4c3721d5
ILT		 4403 return true;
4404
35fee729 4405 h->written = true;
9783e04a 4406
74942465
ILT		 4407 /* An indx of -2 means the symbol must be written. */
4408 if (h->indx != -2
4409 && (finfo->info->strip == strip_all
4410 || (finfo->info->strip == strip_some
4411 && bfd_hash_lookup (finfo->info->keep_hash, h->root.root.string,
4412 false, false) == NULL)))
9783e04a
DM		 4413 return true;
4414
4c3721d5
ILT		 4415 switch (h->root.type)
4416 {
4417 default:
4c3721d5
ILT		 4418 abort ();
4419 /* Avoid variable not initialized warnings. */
4420 return true;
f4945271
ILT		 4421 case bfd_link_hash_new:
4422 /* This can happen for set symbols when sets are not being
4423 built. */
4424 return true;
4c3721d5
ILT		 4425 case bfd_link_hash_undefined:
4426 type = N_UNDF | N_EXT;
4427 val = 0;
4428 break;
4429 case bfd_link_hash_defined:
6c97aedf 4430 case bfd_link_hash_defweak:
4c3721d5
ILT		 4431 {
4432 asection *sec;
4433
4f019d04 4434 sec = h->root.u.def.section->output_section;
4587b578 4435 BFD_ASSERT (bfd_is_abs_section (sec)
4c3721d5
ILT		 4436 || sec->owner == output_bfd);
4437 if (sec == obj_textsec (output_bfd))
6c97aedf 4438 type = h->root.type == bfd_link_hash_defined ? N_TEXT : N_WEAKT;
4c3721d5 4439 else if (sec == obj_datasec (output_bfd))
6c97aedf 4440 type = h->root.type == bfd_link_hash_defined ? N_DATA : N_WEAKD;
4c3721d5 4441 else if (sec == obj_bsssec (output_bfd))
6c97aedf 4442 type = h->root.type == bfd_link_hash_defined ? N_BSS : N_WEAKB;
4c3721d5 4443 else
6c97aedf
ILT		 4444 type = h->root.type == bfd_link_hash_defined ? N_ABS : N_WEAKA;
4445 type |= N_EXT;
4c3721d5 4446 val = (h->root.u.def.value
4f019d04
ILT		 4447 + sec->vma
4448 + h->root.u.def.section->output_offset);
4c3721d5
ILT		 4449 }
4450 break;
4451 case bfd_link_hash_common:
4452 type = N_UNDF | N_EXT;
4453 val = h->root.u.c.size;
4454 break;
6c97aedf 4455 case bfd_link_hash_undefweak:
4298e311
ILT		 4456 type = N_WEAKU;
4457 val = 0;
4c3721d5
ILT		 4458 case bfd_link_hash_indirect:
4459 case bfd_link_hash_warning:
4460 /* FIXME: Ignore these for now. The circumstances under which
4461 they should be written out are not clear to me. */
4462 return true;
4463 }
4464
4465 bfd_h_put_8 (output_bfd, type, outsym.e_type);
4466 bfd_h_put_8 (output_bfd, 0, outsym.e_other);
4467 bfd_h_put_16 (output_bfd, 0, outsym.e_desc);
1afd2380 4468 indx = add_to_stringtab (output_bfd, finfo->strtab, h->root.root.string,
d17fc4c9
ILT		 4469 false);
4470 if (indx == (bfd_size_type) -1)
4471 {
4472 /* FIXME: No way to handle errors. */
4473 abort ();
4474 }
4475 PUT_WORD (output_bfd, indx, outsym.e_strx);
4c3721d5
ILT		 4476 PUT_WORD (output_bfd, val, outsym.e_value);
4477
4478 if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0
4479 || bfd_write ((PTR) &outsym, (bfd_size_type) EXTERNAL_NLIST_SIZE,
4480 (bfd_size_type) 1, output_bfd) != EXTERNAL_NLIST_SIZE)
4481 {
4482 /* FIXME: No way to handle errors. */
4483 abort ();
4484 }
4485
4486 finfo->symoff += EXTERNAL_NLIST_SIZE;
4487 h->indx = obj_aout_external_sym_count (output_bfd);
4488 ++obj_aout_external_sym_count (output_bfd);
4489
4490 return true;
4491}
4492
4493/* Link an a.out section into the output file. */
4494
4495static boolean
4496aout_link_input_section (finfo, input_bfd, input_section, reloff_ptr,
1afd2380 4497 rel_size)
4c3721d5
ILT		 4498 struct aout_final_link_info *finfo;
4499 bfd *input_bfd;
4500 asection *input_section;
4501 file_ptr *reloff_ptr;
4502 bfd_size_type rel_size;
4c3721d5
ILT		 4503{
4504 bfd_size_type input_size;
e85e8bfe 4505 PTR relocs;
4c3721d5
ILT		 4506
4507 /* Get the section contents. */
4508 input_size = bfd_section_size (input_bfd, input_section);
1afd2380
ILT		 4509 if (! bfd_get_section_contents (input_bfd, input_section,
4510 (PTR) finfo->contents,
4c3721d5 4511 (file_ptr) 0, input_size))
1afd2380 4512 return false;
4c3721d5 4513
e85e8bfe
ILT		 4514 /* Read in the relocs if we haven't already done it. */
4515 if (aout_section_data (input_section) != NULL
4516 && aout_section_data (input_section)->relocs != NULL)
4517 relocs = aout_section_data (input_section)->relocs;
4518 else
80425e6c 4519 {
1afd2380 4520 relocs = finfo->relocs;
875e4716
ILT		 4521 if (rel_size > 0)
4522 {
4523 if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0
4524 || bfd_read (relocs, 1, rel_size, input_bfd) != rel_size)
4525 return false;
4526 }
80425e6c 4527 }
4c3721d5
ILT		 4528
4529 /* Relocate the section contents. */
4530 if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE)
4531 {
4532 if (! aout_link_input_section_std (finfo, input_bfd, input_section,
4533 (struct reloc_std_external *) relocs,
1afd2380
ILT		 4534 rel_size, finfo->contents))
4535 return false;
4c3721d5
ILT		 4536 }
4537 else
4538 {
4539 if (! aout_link_input_section_ext (finfo, input_bfd, input_section,
4540 (struct reloc_ext_external *) relocs,
1afd2380
ILT		 4541 rel_size, finfo->contents))
4542 return false;
4c3721d5
ILT		 4543 }
4544
4545 /* Write out the section contents. */
4546 if (! bfd_set_section_contents (finfo->output_bfd,
4547 input_section->output_section,
1afd2380 4548 (PTR) finfo->contents,
728472f1 4549 input_section->output_offset,
4c3721d5 4550 input_size))
1afd2380 4551 return false;
4c3721d5
ILT		 4552
4553 /* If we are producing relocateable output, the relocs were
4554 modified, and we now write them out. */
875e4716 4555 if (finfo->info->relocateable && rel_size > 0)
4c3721d5
ILT		 4556 {
4557 if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0)
1afd2380 4558 return false;
4c3721d5
ILT		 4559 if (bfd_write (relocs, (bfd_size_type) 1, rel_size, finfo->output_bfd)
4560 != rel_size)
1afd2380 4561 return false;
4c3721d5
ILT		 4562 *reloff_ptr += rel_size;
4563
4564 /* Assert that the relocs have not run into the symbols, and
4565 that if these are the text relocs they have not run into the
4566 data relocs. */
4567 BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd)
4568 && (reloff_ptr != &finfo->treloff
4569 || (*reloff_ptr
4570 <= obj_datasec (finfo->output_bfd)->rel_filepos)));
4571 }
4572
4573 return true;
4574}
4575
4576/* Get the section corresponding to a reloc index. */
4577
4578static INLINE asection *
4579aout_reloc_index_to_section (abfd, indx)
4580 bfd *abfd;
4581 int indx;
4582{
4583 switch (indx & N_TYPE)
4584 {
4585 case N_TEXT:
4586 return obj_textsec (abfd);
4587 case N_DATA:
4588 return obj_datasec (abfd);
4589 case N_BSS:
4590 return obj_bsssec (abfd);
4591 case N_ABS:
fa2302b8 4592 case N_UNDF:
4587b578 4593 return bfd_abs_section_ptr;
4c3721d5
ILT		 4594 default:
4595 abort ();
4596 }
4597}
4598
4599/* Relocate an a.out section using standard a.out relocs. */
4600
4601static boolean
4602aout_link_input_section_std (finfo, input_bfd, input_section, relocs,
1afd2380 4603 rel_size, contents)
4c3721d5
ILT		 4604 struct aout_final_link_info *finfo;
4605 bfd *input_bfd;
4606 asection *input_section;
4607 struct reloc_std_external *relocs;
4608 bfd_size_type rel_size;
4609 bfd_byte *contents;
4c3721d5 4610{
e85e8bfe
ILT		 4611 boolean (*check_dynamic_reloc) PARAMS ((struct bfd_link_info *,
4612 bfd *, asection *,
4613 struct aout_link_hash_entry *,
ae115e51
ILT		 4614 PTR, bfd_byte *, boolean *,
4615 bfd_vma *));
4c3721d5
ILT		 4616 bfd *output_bfd;
4617 boolean relocateable;
4618 struct external_nlist *syms;
4619 char *strings;
4620 struct aout_link_hash_entry **sym_hashes;
1afd2380 4621 int *symbol_map;
4c3721d5
ILT		 4622 bfd_size_type reloc_count;
4623 register struct reloc_std_external *rel;
4624 struct reloc_std_external *rel_end;
4625
4626 output_bfd = finfo->output_bfd;
e85e8bfe 4627 check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc;
4c3721d5
ILT		 4628
4629 BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE);
64d5f5d0
ILT		 4630 BFD_ASSERT (input_bfd->xvec->header_byteorder
4631 == output_bfd->xvec->header_byteorder);
4c3721d5
ILT		 4632
4633 relocateable = finfo->info->relocateable;
4634 syms = obj_aout_external_syms (input_bfd);
4635 strings = obj_aout_external_strings (input_bfd);
4636 sym_hashes = obj_aout_sym_hashes (input_bfd);
1afd2380 4637 symbol_map = finfo->symbol_map;
4c3721d5
ILT		 4638
4639 reloc_count = rel_size / RELOC_STD_SIZE;
4640 rel = relocs;
4641 rel_end = rel + reloc_count;
4642 for (; rel < rel_end; rel++)
4643 {
4644 bfd_vma r_addr;
4645 int r_index;
4646 int r_extern;
4647 int r_pcrel;
ae115e51 4648 int r_baserel = 0;
f42fe159 4649 reloc_howto_type *howto;
ae115e51 4650 struct aout_link_hash_entry *h = NULL;
4c3721d5
ILT		 4651 bfd_vma relocation;
4652 bfd_reloc_status_type r;
4653
4654 r_addr = GET_SWORD (input_bfd, rel->r_address);
4655
f42fe159
ILT		 4656#ifdef MY_reloc_howto
4657 howto = MY_reloc_howto(input_bfd, rel, r_index, r_extern, r_pcrel);
4658#else
ae115e51
ILT		 4659 {
4660 int r_jmptable;
4661 int r_relative;
4662 int r_length;
4663 unsigned int howto_idx;
4c3721d5 4664
64d5f5d0 4665 if (bfd_header_big_endian (input_bfd))
ae115e51
ILT		 4666 {
4667 r_index = ((rel->r_index[0] << 16)
4668 | (rel->r_index[1] << 8)
4669 | rel->r_index[2]);
4670 r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
4671 r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
4672 r_baserel = (0 != (rel->r_type[0] & RELOC_STD_BITS_BASEREL_BIG));
4673 r_jmptable= (0 != (rel->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG));
4674 r_relative= (0 != (rel->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG));
4675 r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_BIG)
4676 >> RELOC_STD_BITS_LENGTH_SH_BIG);
4677 }
4678 else
4679 {
4680 r_index = ((rel->r_index[2] << 16)
4681 | (rel->r_index[1] << 8)
4682 | rel->r_index[0]);
4683 r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
4684 r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
4685 r_baserel = (0 != (rel->r_type[0]
4686 & RELOC_STD_BITS_BASEREL_LITTLE));
4687 r_jmptable= (0 != (rel->r_type[0]
4688 & RELOC_STD_BITS_JMPTABLE_LITTLE));
4689 r_relative= (0 != (rel->r_type[0]
4690 & RELOC_STD_BITS_RELATIVE_LITTLE));
4691 r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE)
4692 >> RELOC_STD_BITS_LENGTH_SH_LITTLE);
4693 }
4694
4695 howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel
4696 + 16 * r_jmptable + 32 * r_relative);
4697 BFD_ASSERT (howto_idx < TABLE_SIZE (howto_table_std));
4698 howto = howto_table_std + howto_idx;
4699 }
f42fe159 4700#endif
4c3721d5
ILT		 4701
4702 if (relocateable)
4703 {
4704 /* We are generating a relocateable output file, and must
4705 modify the reloc accordingly. */
4706 if (r_extern)
4707 {
4c3721d5
ILT		 4708 /* If we know the symbol this relocation is against,
4709 convert it into a relocation against a section. This
4710 is what the native linker does. */
4711 h = sym_hashes[r_index];
4712 if (h != (struct aout_link_hash_entry *) NULL
6c97aedf
ILT		 4713 && (h->root.type == bfd_link_hash_defined
4714 || h->root.type == bfd_link_hash_defweak))
4c3721d5
ILT		 4715 {
4716 asection *output_section;
4717
4718 /* Change the r_extern value. */
64d5f5d0 4719 if (bfd_header_big_endian (output_bfd))
4c3721d5
ILT		 4720 rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_BIG;
4721 else
4722 rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_LITTLE;
4723
4724 /* Compute a new r_index. */
4725 output_section = h->root.u.def.section->output_section;
4726 if (output_section == obj_textsec (output_bfd))
4727 r_index = N_TEXT;
4728 else if (output_section == obj_datasec (output_bfd))
4729 r_index = N_DATA;
4730 else if (output_section == obj_bsssec (output_bfd))
4731 r_index = N_BSS;
4732 else
4733 r_index = N_ABS;
4734
4735 /* Add the symbol value and the section VMA to the
4736 addend stored in the contents. */
4737 relocation = (h->root.u.def.value
4738 + output_section->vma
4739 + h->root.u.def.section->output_offset);
4740 }
4741 else
4742 {
4743 /* We must change r_index according to the symbol
4744 map. */
4745 r_index = symbol_map[r_index];
4746
4747 if (r_index == -1)
4748 {
74942465
ILT		 4749 if (h != NULL)
4750 {
4751 /* We decided to strip this symbol, but it
4752 turns out that we can't. Note that we
4753 lose the other and desc information here.
4754 I don't think that will ever matter for a
4755 global symbol. */
4756 if (h->indx < 0)
4757 {
4758 h->indx = -2;
4759 h->written = false;
4760 if (! aout_link_write_other_symbol (h,
4761 (PTR) finfo))
4762 return false;
4763 }
4764 r_index = h->indx;
4765 }
4766 else
4767 {
4768 const char *name;
4769
4770 name = strings + GET_WORD (input_bfd,
4771 syms[r_index].e_strx);
4772 if (! ((*finfo->info->callbacks->unattached_reloc)
4773 (finfo->info, name, input_bfd, input_section,
4774 r_addr)))
4775 return false;
4776 r_index = 0;
4777 }
4c3721d5
ILT		 4778 }
4779
4780 relocation = 0;
4781 }
4782
4783 /* Write out the new r_index value. */
64d5f5d0 4784 if (bfd_header_big_endian (output_bfd))
4c3721d5
ILT		 4785 {
4786 rel->r_index[0] = r_index >> 16;
4787 rel->r_index[1] = r_index >> 8;
4788 rel->r_index[2] = r_index;
4789 }
4790 else
4791 {
4792 rel->r_index[2] = r_index >> 16;
4793 rel->r_index[1] = r_index >> 8;
4794 rel->r_index[0] = r_index;
4795 }
4796 }
4797 else
4798 {
4799 asection *section;
4800
4801 /* This is a relocation against a section. We must
4802 adjust by the amount that the section moved. */
4803 section = aout_reloc_index_to_section (input_bfd, r_index);
4804 relocation = (section->output_section->vma
4805 + section->output_offset
4806 - section->vma);
4807 }
4808
4809 /* Change the address of the relocation. */
4810 PUT_WORD (output_bfd,
4811 r_addr + input_section->output_offset,
4812 rel->r_address);
4813
4814 /* Adjust a PC relative relocation by removing the reference
e68de5d5
ILT		 4815 to the original address in the section and including the
4816 reference to the new address. */
4c3721d5 4817 if (r_pcrel)
e68de5d5
ILT		 4818 relocation -= (input_section->output_section->vma
4819 + input_section->output_offset
4820 - input_section->vma);
4c3721d5 4821
943fbd5b
KR		 4822#ifdef MY_relocatable_reloc
4823 MY_relocatable_reloc (howto, output_bfd, rel, relocation, r_addr);
4824#endif
4825
4c3721d5
ILT		 4826 if (relocation == 0)
4827 r = bfd_reloc_ok;
4828 else
34e9ffbc 4829 r = MY_relocate_contents (howto,
4c3721d5
ILT		 4830 input_bfd, relocation,
4831 contents + r_addr);
4832 }
4833 else
4834 {
ae115e51
ILT		 4835 boolean hundef;
4836
4c3721d5
ILT		 4837 /* We are generating an executable, and must do a full
4838 relocation. */
ae115e51 4839 hundef = false;
4c3721d5
ILT		 4840 if (r_extern)
4841 {
4c3721d5 4842 h = sym_hashes[r_index];
e85e8bfe 4843
4c3721d5 4844 if (h != (struct aout_link_hash_entry *) NULL
6c97aedf
ILT		 4845 && (h->root.type == bfd_link_hash_defined
4846 || h->root.type == bfd_link_hash_defweak))
4c3721d5
ILT		 4847 {
4848 relocation = (h->root.u.def.value
4849 + h->root.u.def.section->output_section->vma
4850 + h->root.u.def.section->output_offset);
4851 }
4298e311 4852 else if (h != (struct aout_link_hash_entry *) NULL
6c97aedf 4853 && h->root.type == bfd_link_hash_undefweak)
4298e311 4854 relocation = 0;
4c3721d5
ILT		 4855 else
4856 {
ae115e51 4857 hundef = true;
4c3721d5
ILT		 4858 relocation = 0;
4859 }
4860 }
4861 else
4862 {
4863 asection *section;
4864
4865 section = aout_reloc_index_to_section (input_bfd, r_index);
4866 relocation = (section->output_section->vma
4867 + section->output_offset
4868 - section->vma);
e68de5d5
ILT		 4869 if (r_pcrel)
4870 relocation += input_section->vma;
4c3721d5
ILT		 4871 }
4872
ae115e51
ILT		 4873 if (check_dynamic_reloc != NULL)
4874 {
4875 boolean skip;
4876
4877 if (! ((*check_dynamic_reloc)
4878 (finfo->info, input_bfd, input_section, h,
4879 (PTR) rel, contents, &skip, &relocation)))
4880 return false;
4881 if (skip)
4882 continue;
4883 }
4884
4885 /* Now warn if a global symbol is undefined. We could not
4886 do this earlier, because check_dynamic_reloc might want
4887 to skip this reloc. */
4888 if (hundef && ! finfo->info->shared && ! r_baserel)
4889 {
4890 const char *name;
4891
7ec49f91
ILT		 4892 if (h != NULL)
4893 name = h->root.root.string;
4894 else
4895 name = strings + GET_WORD (input_bfd, syms[r_index].e_strx);
ae115e51
ILT		 4896 if (! ((*finfo->info->callbacks->undefined_symbol)
4897 (finfo->info, name, input_bfd, input_section, r_addr)))
4898 return false;
4899 }
4900
34e9ffbc 4901 r = MY_final_link_relocate (howto,
7ec49f91
ILT		 4902 input_bfd, input_section,
4903 contents, r_addr, relocation,
4904 (bfd_vma) 0);
4c3721d5
ILT		 4905 }
4906
4907 if (r != bfd_reloc_ok)
4908 {
4909 switch (r)
4910 {
4911 default:
4912 case bfd_reloc_outofrange:
4913 abort ();
4914 case bfd_reloc_overflow:
4991ebb9
ILT		 4915 {
4916 const char *name;
4917
4918 if (r_extern)
4919 name = strings + GET_WORD (input_bfd,
4920 syms[r_index].e_strx);
4921 else
4922 {
4923 asection *s;
4924
4925 s = aout_reloc_index_to_section (input_bfd, r_index);
4926 name = bfd_section_name (input_bfd, s);
4927 }
4928 if (! ((*finfo->info->callbacks->reloc_overflow)
f42fe159 4929 (finfo->info, name, howto->name,
4991ebb9
ILT		 4930 (bfd_vma) 0, input_bfd, input_section, r_addr)))
4931 return false;
4932 }
4c3721d5
ILT		 4933 break;
4934 }
4935 }
4936 }
4937
4938 return true;
4939}
4940
4941/* Relocate an a.out section using extended a.out relocs. */
4942
4943static boolean
4944aout_link_input_section_ext (finfo, input_bfd, input_section, relocs,
1afd2380 4945 rel_size, contents)
4c3721d5
ILT		 4946 struct aout_final_link_info *finfo;
4947 bfd *input_bfd;
4948 asection *input_section;
4949 struct reloc_ext_external *relocs;
4950 bfd_size_type rel_size;
4951 bfd_byte *contents;
4c3721d5 4952{
e85e8bfe
ILT		 4953 boolean (*check_dynamic_reloc) PARAMS ((struct bfd_link_info *,
4954 bfd *, asection *,
4955 struct aout_link_hash_entry *,
ae115e51
ILT		 4956 PTR, bfd_byte *, boolean *,
4957 bfd_vma *));
4c3721d5
ILT		 4958 bfd *output_bfd;
4959 boolean relocateable;
4960 struct external_nlist *syms;
4961 char *strings;
4962 struct aout_link_hash_entry **sym_hashes;
1afd2380 4963 int *symbol_map;
4c3721d5
ILT		 4964 bfd_size_type reloc_count;
4965 register struct reloc_ext_external *rel;
4966 struct reloc_ext_external *rel_end;
4967
4968 output_bfd = finfo->output_bfd;
e85e8bfe 4969 check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc;
4c3721d5
ILT		 4970
4971 BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_EXT_SIZE);
64d5f5d0
ILT		 4972 BFD_ASSERT (input_bfd->xvec->header_byteorder
4973 == output_bfd->xvec->header_byteorder);
4c3721d5
ILT		 4974
4975 relocateable = finfo->info->relocateable;
4976 syms = obj_aout_external_syms (input_bfd);
4977 strings = obj_aout_external_strings (input_bfd);
4978 sym_hashes = obj_aout_sym_hashes (input_bfd);
1afd2380 4979 symbol_map = finfo->symbol_map;
4c3721d5
ILT		 4980
4981 reloc_count = rel_size / RELOC_EXT_SIZE;
4982 rel = relocs;
4983 rel_end = rel + reloc_count;
4984 for (; rel < rel_end; rel++)
4985 {
4986 bfd_vma r_addr;
4987 int r_index;
4988 int r_extern;
ae115e51 4989 unsigned int r_type;
4c3721d5 4990 bfd_vma r_addend;
ae115e51
ILT		 4991 struct aout_link_hash_entry *h = NULL;
4992 asection *r_section = NULL;
4c3721d5
ILT		 4993 bfd_vma relocation;
4994
4995 r_addr = GET_SWORD (input_bfd, rel->r_address);
4996
64d5f5d0 4997 if (bfd_header_big_endian (input_bfd))
4c3721d5
ILT		 4998 {
4999 r_index = ((rel->r_index[0] << 16)
5000 | (rel->r_index[1] << 8)
5001 | rel->r_index[2]);
5002 r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG));
5003 r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
5004 >> RELOC_EXT_BITS_TYPE_SH_BIG);
5005 }
5006 else
5007 {
5008 r_index = ((rel->r_index[2] << 16)
5009 | (rel->r_index[1] << 8)
5010 | rel->r_index[0]);
5011 r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE));
5012 r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
5013 >> RELOC_EXT_BITS_TYPE_SH_LITTLE);
5014 }
5015
5016 r_addend = GET_SWORD (input_bfd, rel->r_addend);
5017
ae115e51 5018 BFD_ASSERT (r_type < TABLE_SIZE (howto_table_ext));
e68de5d5 5019
4c3721d5
ILT		 5020 if (relocateable)
5021 {
5022 /* We are generating a relocateable output file, and must
5023 modify the reloc accordingly. */
5024 if (r_extern)
5025 {
4c3721d5
ILT		 5026 /* If we know the symbol this relocation is against,
5027 convert it into a relocation against a section. This
5028 is what the native linker does. */
5029 h = sym_hashes[r_index];
5030 if (h != (struct aout_link_hash_entry *) NULL
6c97aedf
ILT		 5031 && (h->root.type == bfd_link_hash_defined
5032 || h->root.type == bfd_link_hash_defweak))
4c3721d5
ILT		 5033 {
5034 asection *output_section;
5035
5036 /* Change the r_extern value. */
64d5f5d0 5037 if (bfd_header_big_endian (output_bfd))
4c3721d5
ILT		 5038 rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_BIG;
5039 else
5040 rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_LITTLE;
5041
5042 /* Compute a new r_index. */
5043 output_section = h->root.u.def.section->output_section;
5044 if (output_section == obj_textsec (output_bfd))
5045 r_index = N_TEXT;
5046 else if (output_section == obj_datasec (output_bfd))
5047 r_index = N_DATA;
5048 else if (output_section == obj_bsssec (output_bfd))
5049 r_index = N_BSS;
5050 else
5051 r_index = N_ABS;
5052
5053 /* Add the symbol value and the section VMA to the
5054 addend. */
5055 relocation = (h->root.u.def.value
5056 + output_section->vma
5057 + h->root.u.def.section->output_offset);
e68de5d5
ILT		 5058
5059 /* Now RELOCATION is the VMA of the final
5060 destination. If this is a PC relative reloc,
5061 then ADDEND is the negative of the source VMA.
5062 We want to set ADDEND to the difference between
5063 the destination VMA and the source VMA, which
5064 means we must adjust RELOCATION by the change in
5065 the source VMA. This is done below. */
4c3721d5
ILT		 5066 }
5067 else
5068 {
5069 /* We must change r_index according to the symbol
5070 map. */
5071 r_index = symbol_map[r_index];
5072
5073 if (r_index == -1)
5074 {
74942465
ILT		 5075 if (h != NULL)
5076 {
5077 /* We decided to strip this symbol, but it
5078 turns out that we can't. Note that we
5079 lose the other and desc information here.
5080 I don't think that will ever matter for a
5081 global symbol. */
5082 if (h->indx < 0)
5083 {
5084 h->indx = -2;
5085 h->written = false;
5086 if (! aout_link_write_other_symbol (h,
5087 (PTR) finfo))
5088 return false;
5089 }
5090 r_index = h->indx;
5091 }
5092 else
5093 {
5094 const char *name;
5095
5096 name = strings + GET_WORD (input_bfd,
5097 syms[r_index].e_strx);
5098 if (! ((*finfo->info->callbacks->unattached_reloc)
5099 (finfo->info, name, input_bfd, input_section,
5100 r_addr)))
5101 return false;
5102 r_index = 0;
5103 }
4c3721d5
ILT		 5104 }
5105
5106 relocation = 0;
e68de5d5
ILT		 5107
5108 /* If this is a PC relative reloc, then the addend
5109 is the negative of the source VMA. We must
5110 adjust it by the change in the source VMA. This
5111 is done below. */
4c3721d5
ILT		 5112 }
5113
5114 /* Write out the new r_index value. */
64d5f5d0 5115 if (bfd_header_big_endian (output_bfd))
4c3721d5
ILT		 5116 {
5117 rel->r_index[0] = r_index >> 16;
5118 rel->r_index[1] = r_index >> 8;
5119 rel->r_index[2] = r_index;
5120 }
5121 else
5122 {
5123 rel->r_index[2] = r_index >> 16;
5124 rel->r_index[1] = r_index >> 8;
5125 rel->r_index[0] = r_index;
5126 }
5127 }
5128 else
5129 {
4c3721d5
ILT		 5130 /* This is a relocation against a section. We must
5131 adjust by the amount that the section moved. */
ae115e51
ILT		 5132 r_section = aout_reloc_index_to_section (input_bfd, r_index);
5133 relocation = (r_section->output_section->vma
5134 + r_section->output_offset
5135 - r_section->vma);
4c3721d5 5136
e68de5d5
ILT		 5137 /* If this is a PC relative reloc, then the addend is
5138 the difference in VMA between the destination and the
5139 source. We have just adjusted for the change in VMA
5140 of the destination, so we must also adjust by the
5141 change in VMA of the source. This is done below. */
4c3721d5
ILT		 5142 }
5143
e68de5d5
ILT		 5144 /* As described above, we must always adjust a PC relative
5145 reloc by the change in VMA of the source. */
5146 if (howto_table_ext[r_type].pc_relative)
5147 relocation -= (input_section->output_section->vma
5148 + input_section->output_offset
5149 - input_section->vma);
5150
4c3721d5
ILT		 5151 /* Change the addend if necessary. */
5152 if (relocation != 0)
5153 PUT_WORD (output_bfd, r_addend + relocation, rel->r_addend);
5154
5155 /* Change the address of the relocation. */
5156 PUT_WORD (output_bfd,
5157 r_addr + input_section->output_offset,
5158 rel->r_address);
5159 }
5160 else
5161 {
ae115e51 5162 boolean hundef;
4c3721d5
ILT		 5163 bfd_reloc_status_type r;
5164
5165 /* We are generating an executable, and must do a full
5166 relocation. */
ae115e51 5167 hundef = false;
4c3721d5
ILT		 5168 if (r_extern)
5169 {
4c3721d5 5170 h = sym_hashes[r_index];
e85e8bfe 5171
4c3721d5 5172 if (h != (struct aout_link_hash_entry *) NULL
6c97aedf
ILT		 5173 && (h->root.type == bfd_link_hash_defined
5174 || h->root.type == bfd_link_hash_defweak))
4c3721d5
ILT		 5175 {
5176 relocation = (h->root.u.def.value
5177 + h->root.u.def.section->output_section->vma
5178 + h->root.u.def.section->output_offset);
5179 }
4298e311 5180 else if (h != (struct aout_link_hash_entry *) NULL
6c97aedf 5181 && h->root.type == bfd_link_hash_undefweak)
4298e311 5182 relocation = 0;
4c3721d5
ILT		 5183 else
5184 {
ae115e51 5185 hundef = true;
4c3721d5
ILT		 5186 relocation = 0;
5187 }
5188 }
ae115e51
ILT		 5189 else if (r_type == RELOC_BASE10
5190 || r_type == RELOC_BASE13
5191 || r_type == RELOC_BASE22)
5192 {
5193 struct external_nlist *sym;
5194 int type;
5195
5196 /* For base relative relocs, r_index is always an index
5197 into the symbol table, even if r_extern is 0. */
5198 sym = syms + r_index;
5199 type = bfd_h_get_8 (input_bfd, sym->e_type);
5200 if ((type & N_TYPE) == N_TEXT
5201 || type == N_WEAKT)
5202 r_section = obj_textsec (input_bfd);
5203 else if ((type & N_TYPE) == N_DATA
5204 || type == N_WEAKD)
5205 r_section = obj_datasec (input_bfd);
5206 else if ((type & N_TYPE) == N_BSS
5207 || type == N_WEAKB)
5208 r_section = obj_bsssec (input_bfd);
5209 else if ((type & N_TYPE) == N_ABS
5210 || type == N_WEAKA)
5211 r_section = bfd_abs_section_ptr;
5212 else
5213 abort ();
5214 relocation = (r_section->output_section->vma
5215 + r_section->output_offset
5216 + (GET_WORD (input_bfd, sym->e_value)
5217 - r_section->vma));
5218 }
4c3721d5
ILT		 5219 else
5220 {
ae115e51 5221 r_section = aout_reloc_index_to_section (input_bfd, r_index);
e68de5d5
ILT		 5222
5223 /* If this is a PC relative reloc, then R_ADDEND is the
5224 difference between the two vmas, or
5225 old_dest_sec + old_dest_off - (old_src_sec + old_src_off)
5226 where
5227 old_dest_sec == section->vma
5228 and
5229 old_src_sec == input_section->vma
5230 and
5231 old_src_off == r_addr
5232
5233 _bfd_final_link_relocate expects RELOCATION +
5234 R_ADDEND to be the VMA of the destination minus
5235 r_addr (the minus r_addr is because this relocation
5236 is not pcrel_offset, which is a bit confusing and
5237 should, perhaps, be changed), or
5238 new_dest_sec
5239 where
5240 new_dest_sec == output_section->vma + output_offset
5241 We arrange for this to happen by setting RELOCATION to
5242 new_dest_sec + old_src_sec - old_dest_sec
5243
5244 If this is not a PC relative reloc, then R_ADDEND is
5245 simply the VMA of the destination, so we set
5246 RELOCATION to the change in the destination VMA, or
5247 new_dest_sec - old_dest_sec
5248 */
ae115e51
ILT		 5249 relocation = (r_section->output_section->vma
5250 + r_section->output_offset
5251 - r_section->vma);
e68de5d5
ILT		 5252 if (howto_table_ext[r_type].pc_relative)
5253 relocation += input_section->vma;
4c3721d5
ILT		 5254 }
5255
ae115e51
ILT		 5256 if (check_dynamic_reloc != NULL)
5257 {
5258 boolean skip;
5259
5260 if (! ((*check_dynamic_reloc)
5261 (finfo->info, input_bfd, input_section, h,
5262 (PTR) rel, contents, &skip, &relocation)))
5263 return false;
5264 if (skip)
5265 continue;
5266 }
5267
5268 /* Now warn if a global symbol is undefined. We could not
5269 do this earlier, because check_dynamic_reloc might want
5270 to skip this reloc. */
5271 if (hundef
5272 && ! finfo->info->shared
5273 && r_type != RELOC_BASE10
5274 && r_type != RELOC_BASE13
5275 && r_type != RELOC_BASE22)
5276 {
5277 const char *name;
5278
7ec49f91
ILT		 5279 if (h != NULL)
5280 name = h->root.root.string;
5281 else
5282 name = strings + GET_WORD (input_bfd, syms[r_index].e_strx);
ae115e51
ILT		 5283 if (! ((*finfo->info->callbacks->undefined_symbol)
5284 (finfo->info, name, input_bfd, input_section, r_addr)))
5285 return false;
5286 }
5287
34e9ffbc 5288 r = MY_final_link_relocate (howto_table_ext + r_type,
7ec49f91
ILT		 5289 input_bfd, input_section,
5290 contents, r_addr, relocation,
5291 r_addend);
4c3721d5
ILT		 5292 if (r != bfd_reloc_ok)
5293 {
5294 switch (r)
5295 {
5296 default:
5297 case bfd_reloc_outofrange:
5298 abort ();
5299 case bfd_reloc_overflow:
4991ebb9
ILT		 5300 {
5301 const char *name;
5302
ae115e51
ILT		 5303 if (r_extern
5304 || r_type == RELOC_BASE10
5305 || r_type == RELOC_BASE13
5306 || r_type == RELOC_BASE22)
4991ebb9
ILT		 5307 name = strings + GET_WORD (input_bfd,
5308 syms[r_index].e_strx);
5309 else
5310 {
5311 asection *s;
5312
5313 s = aout_reloc_index_to_section (input_bfd, r_index);
5314 name = bfd_section_name (input_bfd, s);
5315 }
5316 if (! ((*finfo->info->callbacks->reloc_overflow)
5317 (finfo->info, name, howto_table_ext[r_type].name,
5318 r_addend, input_bfd, input_section, r_addr)))
5319 return false;
5320 }
4c3721d5
ILT		 5321 break;
5322 }
5323 }
5324 }
5325 }
5326
5327 return true;
5328}
ec099b4b
ILT		 5329
5330/* Handle a link order which is supposed to generate a reloc. */
5331
5332static boolean
5333aout_link_reloc_link_order (finfo, o, p)
5334 struct aout_final_link_info *finfo;
5335 asection *o;
5336 struct bfd_link_order *p;
5337{
5338 struct bfd_link_order_reloc *pr;
5339 int r_index;
5340 int r_extern;
82b1edf7 5341 reloc_howto_type *howto;
ec099b4b
ILT		 5342 file_ptr *reloff_ptr;
5343 struct reloc_std_external srel;
5344 struct reloc_ext_external erel;
5345 PTR rel_ptr;
5346
5347 pr = p->u.reloc.p;
5348
5349 if (p->type == bfd_section_reloc_link_order)
5350 {
5351 r_extern = 0;
4587b578 5352 if (bfd_is_abs_section (pr->u.section))
ec099b4b
ILT		 5353 r_index = N_ABS | N_EXT;
5354 else
5355 {
5356 BFD_ASSERT (pr->u.section->owner == finfo->output_bfd);
5357 r_index = pr->u.section->target_index;
5358 }
5359 }
5360 else
5361 {
5362 struct aout_link_hash_entry *h;
5363
5364 BFD_ASSERT (p->type == bfd_symbol_reloc_link_order);
5365 r_extern = 1;
7ec49f91
ILT		 5366 h = ((struct aout_link_hash_entry *)
5367 bfd_wrapped_link_hash_lookup (finfo->output_bfd, finfo->info,
5368 pr->u.name, false, false, true));
ec099b4b 5369 if (h != (struct aout_link_hash_entry *) NULL
74942465 5370 && h->indx >= 0)
ec099b4b 5371 r_index = h->indx;
74942465
ILT		 5372 else if (h != NULL)
5373 {
5374 /* We decided to strip this symbol, but it turns out that we
5375 can't. Note that we lose the other and desc information
5376 here. I don't think that will ever matter for a global
5377 symbol. */
5378 h->indx = -2;
5379 h->written = false;
5380 if (! aout_link_write_other_symbol (h, (PTR) finfo))
5381 return false;
5382 r_index = h->indx;
5383 }
ec099b4b
ILT		 5384 else
5385 {
5386 if (! ((*finfo->info->callbacks->unattached_reloc)
5387 (finfo->info, pr->u.name, (bfd *) NULL,
5388 (asection *) NULL, (bfd_vma) 0)))
5389 return false;
5390 r_index = 0;
5391 }
5392 }
5393
5394 howto = bfd_reloc_type_lookup (finfo->output_bfd, pr->reloc);
82b1edf7 5395 if (howto == 0)
ec099b4b
ILT		 5396 {
5397 bfd_set_error (bfd_error_bad_value);
5398 return false;
5399 }
5400
5401 if (o == obj_textsec (finfo->output_bfd))
5402 reloff_ptr = &finfo->treloff;
5403 else if (o == obj_datasec (finfo->output_bfd))
5404 reloff_ptr = &finfo->dreloff;
5405 else
5406 abort ();
5407
5408 if (obj_reloc_entry_size (finfo->output_bfd) == RELOC_STD_SIZE)
5409 {
f42fe159 5410#ifdef MY_put_reloc
ae115e51
ILT		 5411 MY_put_reloc(finfo->output_bfd, r_extern, r_index, p->offset, howto,
5412 &srel);
f42fe159 5413#else
ae115e51
ILT		 5414 {
5415 int r_pcrel;
5416 int r_baserel;
5417 int r_jmptable;
5418 int r_relative;
5419 int r_length;
5420
5421 r_pcrel = howto->pc_relative;
5422 r_baserel = (howto->type & 8) != 0;
5423 r_jmptable = (howto->type & 16) != 0;
5424 r_relative = (howto->type & 32) != 0;
5425 r_length = howto->size;
5426
5427 PUT_WORD (finfo->output_bfd, p->offset, srel.r_address);
64d5f5d0 5428 if (bfd_header_big_endian (finfo->output_bfd))
ae115e51
ILT		 5429 {
5430 srel.r_index[0] = r_index >> 16;
5431 srel.r_index[1] = r_index >> 8;
5432 srel.r_index[2] = r_index;
5433 srel.r_type[0] =
5434 ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0)
5435 | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0)
5436 | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0)
5437 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0)
5438 | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0)
5439 | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG));
5440 }
5441 else
5442 {
5443 srel.r_index[2] = r_index >> 16;
5444 srel.r_index[1] = r_index >> 8;
5445 srel.r_index[0] = r_index;
5446 srel.r_type[0] =
5447 ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0)
5448 | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0)
5449 | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0)
5450 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0)
5451 | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0)
5452 | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE));
5453 }
5454 }
f42fe159 5455#endif
ec099b4b
ILT		 5456 rel_ptr = (PTR) &srel;
5457
5458 /* We have to write the addend into the object file, since
5459 standard a.out relocs are in place. It would be more
5460 reliable if we had the current contents of the file here,
5461 rather than assuming zeroes, but we can't read the file since
5462 it was opened using bfd_openw. */
5463 if (pr->addend != 0)
5464 {
5465 bfd_size_type size;
5466 bfd_reloc_status_type r;
5467 bfd_byte *buf;
5468 boolean ok;
5469
5470 size = bfd_get_reloc_size (howto);
e85e8bfe 5471 buf = (bfd_byte *) bfd_zmalloc (size);
ec099b4b 5472 if (buf == (bfd_byte *) NULL)
a9713b91 5473 return false;
34e9ffbc 5474 r = MY_relocate_contents (howto, finfo->output_bfd,
ec099b4b
ILT		 5475 pr->addend, buf);
5476 switch (r)
5477 {
5478 case bfd_reloc_ok:
5479 break;
5480 default:
5481 case bfd_reloc_outofrange:
5482 abort ();
5483 case bfd_reloc_overflow:
5484 if (! ((*finfo->info->callbacks->reloc_overflow)
5485 (finfo->info,
5486 (p->type == bfd_section_reloc_link_order
5487 ? bfd_section_name (finfo->output_bfd,
5488 pr->u.section)
5489 : pr->u.name),
5490 howto->name, pr->addend, (bfd *) NULL,
5491 (asection *) NULL, (bfd_vma) 0)))
5492 {
5493 free (buf);
5494 return false;
5495 }
5496 break;
5497 }
5498 ok = bfd_set_section_contents (finfo->output_bfd, o,
5499 (PTR) buf,
5500 (file_ptr) p->offset,
5501 size);
5502 free (buf);
5503 if (! ok)
5504 return false;
5505 }
5506 }
5507 else
5508 {
5509 PUT_WORD (finfo->output_bfd, p->offset, erel.r_address);
5510
64d5f5d0 5511 if (bfd_header_big_endian (finfo->output_bfd))
ec099b4b
ILT		 5512 {
5513 erel.r_index[0] = r_index >> 16;
5514 erel.r_index[1] = r_index >> 8;
5515 erel.r_index[2] = r_index;
5516 erel.r_type[0] =
5517 ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0)
5518 | (howto->type << RELOC_EXT_BITS_TYPE_SH_BIG));
5519 }
5520 else
5521 {
5522 erel.r_index[2] = r_index >> 16;
5523 erel.r_index[1] = r_index >> 8;
5524 erel.r_index[0] = r_index;
5525 erel.r_type[0] =
5526 (r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0)
5527 | (howto->type << RELOC_EXT_BITS_TYPE_SH_LITTLE);
5528 }
5529
5530 PUT_WORD (finfo->output_bfd, pr->addend, erel.r_addend);
5531
5532 rel_ptr = (PTR) &erel;
5533 }
5534
5535 if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0
5536 || (bfd_write (rel_ptr, (bfd_size_type) 1,
5537 obj_reloc_entry_size (finfo->output_bfd),
5538 finfo->output_bfd)
5539 != obj_reloc_entry_size (finfo->output_bfd)))
5540 return false;
5541
5542 *reloff_ptr += obj_reloc_entry_size (finfo->output_bfd);
5543
5544 /* Assert that the relocs have not run into the symbols, and that n
5545 the text relocs have not run into the data relocs. */
5546 BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd)
5547 && (reloff_ptr != &finfo->treloff
5548 || (*reloff_ptr
5549 <= obj_datasec (finfo->output_bfd)->rel_filepos)));
5550
5551 return true;
5552}
GDB Binutils - Deliverables
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