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* xcofflink.c (xcoff_find_reloc): Handle the case of a single
[deliverable/binutils-gdb.git] / bfd / aoutx.h
CommitLineData
1f29e30b 1/* BFD semi-generic back-end for a.out binaries.
51fbf454 2 Copyright 1990, 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
88dfcd68 3 Written by Cygnus Support.
7ed4093a 4
88dfcd68 5This file is part of BFD, the Binary File Descriptor library.
7ed4093a 6
88dfcd68 7This program is free software; you can redistribute it and/or modify
7ed4093a 8it under the terms of the GNU General Public License as published by
88dfcd68
SC		 9the Free Software Foundation; either version 2 of the License, or
10(at your option) any later version.
7ed4093a 11
88dfcd68 12This program is distributed in the hope that it will be useful,
7ed4093a
SC		 13but WITHOUT ANY WARRANTY; without even the implied warranty of
14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15GNU General Public License for more details.
16
17You should have received a copy of the GNU General Public License
88dfcd68 18along with this program; if not, write to the Free Software
943fbd5b 19Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
7ed4093a 20
4e41b5aa
SC		 21/*
22SECTION
23 a.out backends
6f715d66 24
6f715d66 25
4e41b5aa 26DESCRIPTION
6f715d66 27
4e41b5aa
SC		 28 BFD supports a number of different flavours of a.out format,
29 though the major differences are only the sizes of the
30 structures on disk, and the shape of the relocation
c188b0be 31 information.
6f715d66 32
c188b0be 33 The support is split into a basic support file @file{aoutx.h}
4e41b5aa 34 and other files which derive functions from the base. One
c188b0be 35 derivation file is @file{aoutf1.h} (for a.out flavour 1), and
4e41b5aa
SC		 36 adds to the basic a.out functions support for sun3, sun4, 386
37 and 29k a.out files, to create a target jump vector for a
c188b0be 38 specific target.
6f715d66 39
4e41b5aa 40 This information is further split out into more specific files
c188b0be
DM		 41 for each machine, including @file{sunos.c} for sun3 and sun4,
42 @file{newsos3.c} for the Sony NEWS, and @file{demo64.c} for a
4e41b5aa
SC		 43 demonstration of a 64 bit a.out format.
44
c188b0be
DM		 45 The base file @file{aoutx.h} defines general mechanisms for
46 reading and writing records to and from disk and various
4e41b5aa 47 other methods which BFD requires. It is included by
c188b0be
DM		 48 @file{aout32.c} and @file{aout64.c} to form the names
49 <<aout_32_swap_exec_header_in>>, <<aout_64_swap_exec_header_in>>, etc.
4e41b5aa
SC		 50
51 As an example, this is what goes on to make the back end for a
c188b0be 52 sun4, from @file{aout32.c}:
4e41b5aa 53
3f7607af
PB		 54| #define ARCH_SIZE 32
55| #include "aoutx.h"
4e41b5aa
SC		 56
57 Which exports names:
58
3f7607af
PB		 59| ...
60| aout_32_canonicalize_reloc
61| aout_32_find_nearest_line
62| aout_32_get_lineno
63| aout_32_get_reloc_upper_bound
64| ...
6f715d66 65
c188b0be 66 from @file{sunos.c}:
4e41b5aa 67
3f7607af
PB		 68| #define TARGET_NAME "a.out-sunos-big"
69| #define VECNAME sunos_big_vec
70| #include "aoutf1.h"
4e41b5aa 71
c188b0be 72 requires all the names from @file{aout32.c}, and produces the jump vector
6f715d66 73
3f7607af 74| sunos_big_vec
c6705697 75
c188b0be 76 The file @file{host-aout.c} is a special case. It is for a large set
4e41b5aa
SC		 77 of hosts that use ``more or less standard'' a.out files, and
78 for which cross-debugging is not interesting. It uses the
79 standard 32-bit a.out support routines, but determines the
80 file offsets and addresses of the text, data, and BSS
81 sections, the machine architecture and machine type, and the
82 entry point address, in a host-dependent manner. Once these
83 values have been determined, generic code is used to handle
c188b0be 84 the object file.
c6705697 85
4e41b5aa
SC		 86 When porting it to run on a new system, you must supply:
87
3f7607af
PB		 88| HOST_PAGE_SIZE
89| HOST_SEGMENT_SIZE
90| HOST_MACHINE_ARCH (optional)
91| HOST_MACHINE_MACHINE (optional)
92| HOST_TEXT_START_ADDR
93| HOST_STACK_END_ADDR
c6705697 94
4c3721d5
ILT		 95 in the file @file{../include/sys/h-@var{XXX}.h} (for your host). These
96 values, plus the structures and macros defined in @file{a.out.h} on
4e41b5aa
SC		 97 your host system, will produce a BFD target that will access
98 ordinary a.out files on your host. To configure a new machine
4c3721d5 99 to use @file{host-aout.c}, specify:
c6705697 100
3f7607af
PB		 101| TDEFAULTS = -DDEFAULT_VECTOR=host_aout_big_vec
102| TDEPFILES= host-aout.o trad-core.o
c6705697 103
4c3721d5
ILT		 104 in the @file{config/@var{XXX}.mt} file, and modify @file{configure.in}
105 to use the
106 @file{@var{XXX}.mt} file (by setting "<<bfd_target=XXX>>") when your
4e41b5aa 107 configuration is selected.
c6705697 108
6f715d66
SC		 109*/
110
ce07dd7c
KR		 111/* Some assumptions:
112 * Any BFD with D_PAGED set is ZMAGIC, and vice versa.
113 Doesn't matter what the setting of WP_TEXT is on output, but it'll
114 get set on input.
115 * Any BFD with D_PAGED clear and WP_TEXT set is NMAGIC.
116 * Any BFD with both flags clear is OMAGIC.
117 (Just want to make these explicit, so the conditions tested in this
118 file make sense if you're more familiar with a.out than with BFD.) */
119
ae115e51 120#define KEEPIT udata.i
67c060c3 121
a99c3d70 122#include <string.h> /* For strchr and friends */
67c060c3 123#include "bfd.h"
7ed4093a 124#include <sysdep.h>
4c3721d5 125#include "bfdlink.h"
7ed4093a 126
6f715d66 127#include "libaout.h"
7ed4093a 128#include "libbfd.h"
c3eb25fc
SC		 129#include "aout/aout64.h"
130#include "aout/stab_gnu.h"
131#include "aout/ar.h"
7ed4093a 132
5c8444f8 133static boolean aout_get_external_symbols PARAMS ((bfd *));
4298e311
ILT		 134static boolean translate_from_native_sym_flags
135 PARAMS ((bfd *, aout_symbol_type *));
136static boolean translate_to_native_sym_flags
137 PARAMS ((bfd *, asymbol *, struct external_nlist *));
0ee75d02 138
4e41b5aa
SC		 139/*
140SUBSECTION
4c3721d5 141 Relocations
4e41b5aa
SC		 142
143DESCRIPTION
c188b0be 144 The file @file{aoutx.h} provides for both the @emph{standard}
4e41b5aa
SC		 145 and @emph{extended} forms of a.out relocation records.
146
c188b0be
DM		 147 The standard records contain only an
148 address, a symbol index, and a type field. The extended records
4e41b5aa 149 (used on 29ks and sparcs) also have a full integer for an
c188b0be 150 addend.
7ed4093a 151
6f715d66 152*/
f42fe159 153#ifndef CTOR_TABLE_RELOC_HOWTO
7ed4093a 154#define CTOR_TABLE_RELOC_IDX 2
f42fe159
ILT		 155#define CTOR_TABLE_RELOC_HOWTO(BFD) ((obj_reloc_entry_size(BFD) == RELOC_EXT_SIZE \
156 ? howto_table_ext : howto_table_std) \
157 + CTOR_TABLE_RELOC_IDX)
158#endif
159
160#ifndef MY_swap_std_reloc_in
161#define MY_swap_std_reloc_in NAME(aout,swap_std_reloc_in)
162#endif
163
164#ifndef MY_swap_std_reloc_out
165#define MY_swap_std_reloc_out NAME(aout,swap_std_reloc_out)
166#endif
67c060c3 167
34e9ffbc
NH		 168#ifndef MY_final_link_relocate
169#define MY_final_link_relocate _bfd_final_link_relocate
170#endif
171
172#ifndef MY_relocate_contents
173#define MY_relocate_contents _bfd_relocate_contents
174#endif
175
ce07dd7c
KR		 176#define howto_table_ext NAME(aout,ext_howto_table)
177#define howto_table_std NAME(aout,std_howto_table)
67c060c3 178
c188b0be 179reloc_howto_type howto_table_ext[] =
7ed4093a 180{
4c3721d5 181 /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone */
2e235c93
ILT		 182 HOWTO(RELOC_8, 0, 0, 8, false, 0, complain_overflow_bitfield,0,"8", false, 0,0x000000ff, false),
183 HOWTO(RELOC_16, 0, 1, 16, false, 0, complain_overflow_bitfield,0,"16", false, 0,0x0000ffff, false),
184 HOWTO(RELOC_32, 0, 2, 32, false, 0, complain_overflow_bitfield,0,"32", false, 0,0xffffffff, false),
185 HOWTO(RELOC_DISP8, 0, 0, 8, true, 0, complain_overflow_signed,0,"DISP8", false, 0,0x000000ff, false),
186 HOWTO(RELOC_DISP16, 0, 1, 16, true, 0, complain_overflow_signed,0,"DISP16", false, 0,0x0000ffff, false),
187 HOWTO(RELOC_DISP32, 0, 2, 32, true, 0, complain_overflow_signed,0,"DISP32", false, 0,0xffffffff, false),
188 HOWTO(RELOC_WDISP30,2, 2, 30, true, 0, complain_overflow_signed,0,"WDISP30", false, 0,0x3fffffff, false),
189 HOWTO(RELOC_WDISP22,2, 2, 22, true, 0, complain_overflow_signed,0,"WDISP22", false, 0,0x003fffff, false),
190 HOWTO(RELOC_HI22, 10, 2, 22, false, 0, complain_overflow_bitfield,0,"HI22", false, 0,0x003fffff, false),
191 HOWTO(RELOC_22, 0, 2, 22, false, 0, complain_overflow_bitfield,0,"22", false, 0,0x003fffff, false),
192 HOWTO(RELOC_13, 0, 2, 13, false, 0, complain_overflow_bitfield,0,"13", false, 0,0x00001fff, false),
193 HOWTO(RELOC_LO10, 0, 2, 10, false, 0, complain_overflow_dont,0,"LO10", false, 0,0x000003ff, false),
194 HOWTO(RELOC_SFA_BASE,0, 2, 32, false, 0, complain_overflow_bitfield,0,"SFA_BASE", false, 0,0xffffffff, false),
195 HOWTO(RELOC_SFA_OFF13,0,2, 32, false, 0, complain_overflow_bitfield,0,"SFA_OFF13",false, 0,0xffffffff, false),
196 HOWTO(RELOC_BASE10, 0, 2, 16, false, 0, complain_overflow_bitfield,0,"BASE10", false, 0,0x0000ffff, false),
197 HOWTO(RELOC_BASE13, 0, 2, 13, false, 0, complain_overflow_bitfield,0,"BASE13", false, 0,0x00001fff, false),
198 HOWTO(RELOC_BASE22, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"BASE22", false, 0,0x00000000, false),
ae115e51
ILT		 199 HOWTO(RELOC_PC10, 0, 2, 10, true, 0, complain_overflow_dont,0,"PC10", false, 0,0x000003ff, true),
200 HOWTO(RELOC_PC22, 10, 2, 22, true, 0, complain_overflow_signed,0,"PC22", false, 0,0x003fffff, true),
201 HOWTO(RELOC_JMP_TBL,2, 2, 30, true, 0, complain_overflow_signed,0,"JMP_TBL", false, 0,0x3fffffff, false),
2e235c93
ILT		 202 HOWTO(RELOC_SEGOFF16,0, 2, 0, false, 0, complain_overflow_bitfield,0,"SEGOFF16", false, 0,0x00000000, false),
203 HOWTO(RELOC_GLOB_DAT,0, 2, 0, false, 0, complain_overflow_bitfield,0,"GLOB_DAT", false, 0,0x00000000, false),
204 HOWTO(RELOC_JMP_SLOT,0, 2, 0, false, 0, complain_overflow_bitfield,0,"JMP_SLOT", false, 0,0x00000000, false),
205 HOWTO(RELOC_RELATIVE,0, 2, 0, false, 0, complain_overflow_bitfield,0,"RELATIVE", false, 0,0x00000000, false),
7ed4093a
SC		 206};
207
208/* Convert standard reloc records to "arelent" format (incl byte swap). */
209
ce07dd7c 210reloc_howto_type howto_table_std[] = {
4c3721d5 211 /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone */
c188b0be 212HOWTO( 0, 0, 0, 8, false, 0, complain_overflow_bitfield,0,"8", true, 0x000000ff,0x000000ff, false),
2e235c93
ILT		 213HOWTO( 1, 0, 1, 16, false, 0, complain_overflow_bitfield,0,"16", true, 0x0000ffff,0x0000ffff, false),
214HOWTO( 2, 0, 2, 32, false, 0, complain_overflow_bitfield,0,"32", true, 0xffffffff,0xffffffff, false),
c188b0be
DM		 215HOWTO( 3, 0, 4, 64, false, 0, complain_overflow_bitfield,0,"64", true, 0xdeaddead,0xdeaddead, false),
216HOWTO( 4, 0, 0, 8, true, 0, complain_overflow_signed, 0,"DISP8", true, 0x000000ff,0x000000ff, false),
217HOWTO( 5, 0, 1, 16, true, 0, complain_overflow_signed, 0,"DISP16", true, 0x0000ffff,0x0000ffff, false),
218HOWTO( 6, 0, 2, 32, true, 0, complain_overflow_signed, 0,"DISP32", true, 0xffffffff,0xffffffff, false),
219HOWTO( 7, 0, 4, 64, true, 0, complain_overflow_signed, 0,"DISP64", true, 0xfeedface,0xfeedface, false),
4852416e 220HOWTO( 8, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"GOT_REL", false, 0,0x00000000, false),
c188b0be
DM		 221HOWTO( 9, 0, 1, 16, false, 0, complain_overflow_bitfield,0,"BASE16", false,0xffffffff,0xffffffff, false),
222HOWTO(10, 0, 2, 32, false, 0, complain_overflow_bitfield,0,"BASE32", false,0xffffffff,0xffffffff, false),
cb9461ff
JK		 223{ -1 },
224{ -1 },
225{ -1 },
226{ -1 },
227{ -1 },
228 HOWTO(16, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"JMP_TABLE", false, 0,0x00000000, false),
229{ -1 },
230{ -1 },
231{ -1 },
232{ -1 },
233{ -1 },
234{ -1 },
235{ -1 },
236{ -1 }, { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, { -1 },
237 HOWTO(32, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"RELATIVE", false, 0,0x00000000, false),
238{ -1 },
239{ -1 },
240{ -1 },
241{ -1 },
242{ -1 },
243{ -1 },
244{ -1 },
245 HOWTO(40, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"BASEREL", false, 0,0x00000000, false),
7ed4093a
SC		 246};
247
c188b0be
DM		 248#define TABLE_SIZE(TABLE) (sizeof(TABLE)/sizeof(TABLE[0]))
249
51fbf454 250reloc_howto_type *
8eb5d4be
JK		 251NAME(aout,reloc_type_lookup) (abfd,code)
252 bfd *abfd;
253 bfd_reloc_code_real_type code;
214f8f23
KR		 254{
255#define EXT(i,j) case i: return &howto_table_ext[j]
256#define STD(i,j) case i: return &howto_table_std[j]
257 int ext = obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE;
258 if (code == BFD_RELOC_CTOR)
259 switch (bfd_get_arch_info (abfd)->bits_per_address)
260 {
261 case 32:
262 code = BFD_RELOC_32;
263 break;
ec099b4b
ILT		 264 case 64:
265 code = BFD_RELOC_64;
266 break;
214f8f23
KR		 267 }
268 if (ext)
269 switch (code)
270 {
271 EXT (BFD_RELOC_32, 2);
272 EXT (BFD_RELOC_HI22, 8);
273 EXT (BFD_RELOC_LO10, 11);
274 EXT (BFD_RELOC_32_PCREL_S2, 6);
c188b0be 275 EXT (BFD_RELOC_SPARC_WDISP22, 7);
ec099b4b 276 EXT (BFD_RELOC_SPARC13, 10);
ae115e51 277 EXT (BFD_RELOC_SPARC_GOT10, 14);
ec099b4b 278 EXT (BFD_RELOC_SPARC_BASE13, 15);
ae115e51
ILT		 279 EXT (BFD_RELOC_SPARC_GOT13, 15);
280 EXT (BFD_RELOC_SPARC_GOT22, 16);
281 EXT (BFD_RELOC_SPARC_PC10, 17);
282 EXT (BFD_RELOC_SPARC_PC22, 18);
283 EXT (BFD_RELOC_SPARC_WPLT30, 19);
51fbf454 284 default: return (reloc_howto_type *) NULL;
214f8f23
KR		 285 }
286 else
287 /* std relocs */
288 switch (code)
289 {
290 STD (BFD_RELOC_16, 1);
291 STD (BFD_RELOC_32, 2);
292 STD (BFD_RELOC_8_PCREL, 4);
293 STD (BFD_RELOC_16_PCREL, 5);
294 STD (BFD_RELOC_32_PCREL, 6);
c188b0be
DM		 295 STD (BFD_RELOC_16_BASEREL, 9);
296 STD (BFD_RELOC_32_BASEREL, 10);
51fbf454 297 default: return (reloc_howto_type *) NULL;
214f8f23 298 }
214f8f23 299}
7ed4093a 300
4e41b5aa
SC		 301/*
302SUBSECTION
4c3721d5 303 Internal entry points
4e41b5aa
SC		 304
305DESCRIPTION
c188b0be 306 @file{aoutx.h} exports several routines for accessing the
4e41b5aa
SC		 307 contents of an a.out file, which are gathered and exported in
308 turn by various format specific files (eg sunos.c).
309
6f715d66
SC		 310*/
311
4e41b5aa
SC		 312/*
313FUNCTION
c188b0be 314 aout_@var{size}_swap_exec_header_in
4e41b5aa 315
fa2b89f1 316SYNOPSIS
c188b0be 317 void aout_@var{size}_swap_exec_header_in,
4e41b5aa
SC		 318 (bfd *abfd,
319 struct external_exec *raw_bytes,
320 struct internal_exec *execp);
c188b0be
DM		 321
322DESCRIPTION
323 Swap the information in an executable header @var{raw_bytes} taken
324 from a raw byte stream memory image into the internal exec header
325 structure @var{execp}.
6f715d66 326*/
c188b0be 327
34dd8ba3 328#ifndef NAME_swap_exec_header_in
7ed4093a 329void
8eb5d4be
JK		 330NAME(aout,swap_exec_header_in) (abfd, raw_bytes, execp)
331 bfd *abfd;
332 struct external_exec *raw_bytes;
333 struct internal_exec *execp;
7ed4093a
SC		 334{
335 struct external_exec *bytes = (struct external_exec *)raw_bytes;
336
55c0061e
FF		 337 /* The internal_exec structure has some fields that are unused in this
338 configuration (IE for i960), so ensure that all such uninitialized
339 fields are zero'd out. There are places where two of these structs
340 are memcmp'd, and thus the contents do matter. */
68241b2b 341 memset ((PTR) execp, 0, sizeof (struct internal_exec));
7ed4093a
SC		 342 /* Now fill in fields in the execp, from the bytes in the raw data. */
343 execp->a_info = bfd_h_get_32 (abfd, bytes->e_info);
344 execp->a_text = GET_WORD (abfd, bytes->e_text);
345 execp->a_data = GET_WORD (abfd, bytes->e_data);
346 execp->a_bss = GET_WORD (abfd, bytes->e_bss);
347 execp->a_syms = GET_WORD (abfd, bytes->e_syms);
348 execp->a_entry = GET_WORD (abfd, bytes->e_entry);
349 execp->a_trsize = GET_WORD (abfd, bytes->e_trsize);
350 execp->a_drsize = GET_WORD (abfd, bytes->e_drsize);
351}
34dd8ba3
JG		 352#define NAME_swap_exec_header_in NAME(aout,swap_exec_header_in)
353#endif
7ed4093a 354
4e41b5aa
SC		 355/*
356FUNCTION
c188b0be 357 aout_@var{size}_swap_exec_header_out
4e41b5aa 358
fa2b89f1 359SYNOPSIS
c188b0be 360 void aout_@var{size}_swap_exec_header_out
6f715d66
SC		 361 (bfd *abfd,
362 struct internal_exec *execp,
4e41b5aa 363 struct external_exec *raw_bytes);
c188b0be
DM		 364
365DESCRIPTION
366 Swap the information in an internal exec header structure
367 @var{execp} into the buffer @var{raw_bytes} ready for writing to disk.
6f715d66 368*/
7ed4093a 369void
8eb5d4be
JK		 370NAME(aout,swap_exec_header_out) (abfd, execp, raw_bytes)
371 bfd *abfd;
372 struct internal_exec *execp;
373 struct external_exec *raw_bytes;
7ed4093a
SC		 374{
375 struct external_exec *bytes = (struct external_exec *)raw_bytes;
376
377 /* Now fill in fields in the raw data, from the fields in the exec struct. */
378 bfd_h_put_32 (abfd, execp->a_info , bytes->e_info);
379 PUT_WORD (abfd, execp->a_text , bytes->e_text);
380 PUT_WORD (abfd, execp->a_data , bytes->e_data);
381 PUT_WORD (abfd, execp->a_bss , bytes->e_bss);
382 PUT_WORD (abfd, execp->a_syms , bytes->e_syms);
383 PUT_WORD (abfd, execp->a_entry , bytes->e_entry);
384 PUT_WORD (abfd, execp->a_trsize, bytes->e_trsize);
385 PUT_WORD (abfd, execp->a_drsize, bytes->e_drsize);
386}
387
ec6b18c4 388/* Make all the section for an a.out file. */
7ed4093a 389
ec6b18c4
ILT		 390boolean
391NAME(aout,make_sections) (abfd)
392 bfd *abfd;
393{
394 if (obj_textsec (abfd) == (asection *) NULL
395 && bfd_make_section (abfd, ".text") == (asection *) NULL)
396 return false;
397 if (obj_datasec (abfd) == (asection *) NULL
398 && bfd_make_section (abfd, ".data") == (asection *) NULL)
399 return false;
400 if (obj_bsssec (abfd) == (asection *) NULL
401 && bfd_make_section (abfd, ".bss") == (asection *) NULL)
402 return false;
403 return true;
404}
6f715d66 405
4e41b5aa
SC		 406/*
407FUNCTION
c188b0be 408 aout_@var{size}_some_aout_object_p
6f715d66 409
fa2b89f1 410SYNOPSIS
2f3508ad 411 const bfd_target *aout_@var{size}_some_aout_object_p
6f715d66 412 (bfd *abfd,
2f3508ad 413 const bfd_target *(*callback_to_real_object_p)());
c188b0be
DM		 414
415DESCRIPTION
416 Some a.out variant thinks that the file open in @var{abfd}
417 checking is an a.out file. Do some more checking, and set up
418 for access if it really is. Call back to the calling
419 environment's "finish up" function just before returning, to
420 handle any last-minute setup.
6f715d66 421*/
c188b0be 422
2f3508ad 423const bfd_target *
8eb5d4be
JK		 424NAME(aout,some_aout_object_p) (abfd, execp, callback_to_real_object_p)
425 bfd *abfd;
426 struct internal_exec *execp;
2f3508ad 427 const bfd_target *(*callback_to_real_object_p) PARAMS ((bfd *));
7ed4093a 428{
214f8f23 429 struct aout_data_struct *rawptr, *oldrawptr;
2f3508ad 430 const bfd_target *result;
7ed4093a 431
6db82ea7 432 rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, sizeof (struct aout_data_struct ));
7ed4093a 433 if (rawptr == NULL) {
68241b2b 434 bfd_set_error (bfd_error_no_memory);
7ed4093a
SC		 435 return 0;
436 }
437
214f8f23 438 oldrawptr = abfd->tdata.aout_data;
6db82ea7 439 abfd->tdata.aout_data = rawptr;
ebd24135
ILT		 440
441 /* Copy the contents of the old tdata struct.
442 In particular, we want the subformat, since for hpux it was set in
443 hp300hpux.c:swap_exec_header_in and will be used in
444 hp300hpux.c:callback. */
445 if (oldrawptr != NULL)
446 *abfd->tdata.aout_data = *oldrawptr;
447
6db82ea7
SC		 448 abfd->tdata.aout_data->a.hdr = &rawptr->e;
449 *(abfd->tdata.aout_data->a.hdr) = *execp; /* Copy in the internal_exec struct */
450 execp = abfd->tdata.aout_data->a.hdr;
7ed4093a
SC		 451
452 /* Set the file flags */
453 abfd->flags = NO_FLAGS;
454 if (execp->a_drsize || execp->a_trsize)
455 abfd->flags |= HAS_RELOC;
e6e265ce 456 /* Setting of EXEC_P has been deferred to the bottom of this function */
c188b0be 457 if (execp->a_syms)
7ed4093a 458 abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS;
e68de5d5
ILT		 459 if (N_DYNAMIC(*execp))
460 abfd->flags |= DYNAMIC;
7ed4093a 461
ce07dd7c
KR		 462 if (N_MAGIC (*execp) == ZMAGIC)
463 {
f5419a59
ILT		 464 abfd->flags |= D_PAGED | WP_TEXT;
465 adata (abfd).magic = z_magic;
466 }
467 else if (N_MAGIC (*execp) == QMAGIC)
468 {
469 abfd->flags |= D_PAGED | WP_TEXT;
470 adata (abfd).magic = z_magic;
471 adata (abfd).subformat = q_magic_format;
ce07dd7c
KR		 472 }
473 else if (N_MAGIC (*execp) == NMAGIC)
474 {
475 abfd->flags |= WP_TEXT;
f5419a59 476 adata (abfd).magic = n_magic;
ce07dd7c 477 }
7b024321
ILT		 478 else if (N_MAGIC (*execp) == OMAGIC
479 || N_MAGIC (*execp) == BMAGIC)
f5419a59 480 adata (abfd).magic = o_magic;
ce07dd7c 481 else
f5419a59
ILT		 482 {
483 /* Should have been checked with N_BADMAG before this routine
484 was called. */
485 abort ();
486 }
7ed4093a
SC		 487
488 bfd_get_start_address (abfd) = execp->a_entry;
489
490 obj_aout_symbols (abfd) = (aout_symbol_type *)NULL;
491 bfd_get_symcount (abfd) = execp->a_syms / sizeof (struct external_nlist);
492
7ed4093a
SC		 493 /* The default relocation entry size is that of traditional V7 Unix. */
494 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
495
7b02b4ed
JG		 496 /* The default symbol entry size is that of traditional Unix. */
497 obj_symbol_entry_size (abfd) = EXTERNAL_NLIST_SIZE;
498
728472f1 499 obj_aout_external_syms (abfd) = NULL;
4fe6d901 500 bfd_init_window (&obj_aout_sym_window (abfd));
728472f1 501 obj_aout_external_strings (abfd) = NULL;
4fe6d901 502 bfd_init_window (&obj_aout_string_window (abfd));
728472f1
ILT		 503 obj_aout_sym_hashes (abfd) = NULL;
504
ec6b18c4
ILT		 505 if (! NAME(aout,make_sections) (abfd))
506 return NULL;
7ed4093a 507
6db82ea7
SC		 508 obj_datasec (abfd)->_raw_size = execp->a_data;
509 obj_bsssec (abfd)->_raw_size = execp->a_bss;
7ed4093a 510
0ee75d02 511 obj_textsec (abfd)->flags =
11676adc 512 (execp->a_trsize != 0
0ee75d02
ILT		 513 ? (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_RELOC)
514 : (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS));
515 obj_datasec (abfd)->flags =
11676adc 516 (execp->a_drsize != 0
0ee75d02
ILT		 517 ? (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS | SEC_RELOC)
518 : (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS));
7ed4093a
SC		 519 obj_bsssec (abfd)->flags = SEC_ALLOC;
520
521#ifdef THIS_IS_ONLY_DOCUMENTATION
98d43107
JG		 522 /* The common code can't fill in these things because they depend
523 on either the start address of the text segment, the rounding
9783e04a 524 up of virtual addresses between segments, or the starting file
98d43107
JG		 525 position of the text segment -- all of which varies among different
526 versions of a.out. */
527
c188b0be 528 /* Call back to the format-dependent code to fill in the rest of the
7ed4093a
SC		 529 fields and do any further cleanup. Things that should be filled
530 in by the callback: */
531
532 struct exec *execp = exec_hdr (abfd);
533
98d43107 534 obj_textsec (abfd)->size = N_TXTSIZE(*execp);
6db82ea7 535 obj_textsec (abfd)->raw_size = N_TXTSIZE(*execp);
98d43107
JG		 536 /* data and bss are already filled in since they're so standard */
537
7ed4093a 538 /* The virtual memory addresses of the sections */
7ed4093a 539 obj_textsec (abfd)->vma = N_TXTADDR(*execp);
98d43107
JG		 540 obj_datasec (abfd)->vma = N_DATADDR(*execp);
541 obj_bsssec (abfd)->vma = N_BSSADDR(*execp);
7ed4093a
SC		 542
543 /* The file offsets of the sections */
544 obj_textsec (abfd)->filepos = N_TXTOFF(*execp);
545 obj_datasec (abfd)->filepos = N_DATOFF(*execp);
546
547 /* The file offsets of the relocation info */
548 obj_textsec (abfd)->rel_filepos = N_TRELOFF(*execp);
549 obj_datasec (abfd)->rel_filepos = N_DRELOFF(*execp);
550
551 /* The file offsets of the string table and symbol table. */
552 obj_str_filepos (abfd) = N_STROFF (*execp);
553 obj_sym_filepos (abfd) = N_SYMOFF (*execp);
554
7ed4093a
SC		 555 /* Determine the architecture and machine type of the object file. */
556 switch (N_MACHTYPE (*exec_hdr (abfd))) {
557 default:
558 abfd->obj_arch = bfd_arch_obscure;
559 break;
560 }
561
34e9ffbc 562 adata(abfd)->page_size = TARGET_PAGE_SIZE;
7b02b4ed
JG		 563 adata(abfd)->segment_size = SEGMENT_SIZE;
564 adata(abfd)->exec_bytes_size = EXEC_BYTES_SIZE;
565
7ed4093a
SC		 566 return abfd->xvec;
567
568 /* The architecture is encoded in various ways in various a.out variants,
569 or is not encoded at all in some of them. The relocation size depends
570 on the architecture and the a.out variant. Finally, the return value
571 is the bfd_target vector in use. If an error occurs, return zero and
572 set bfd_error to the appropriate error code.
c188b0be 573
7ed4093a
SC		 574 Formats such as b.out, which have additional fields in the a.out
575 header, should cope with them in this callback as well. */
576#endif /* DOCUMENTATION */
577
e6e265ce
JG		 578 result = (*callback_to_real_object_p)(abfd);
579
580 /* Now that the segment addresses have been worked out, take a better
581 guess at whether the file is executable. If the entry point
582 is within the text segment, assume it is. (This makes files
583 executable even if their entry point address is 0, as long as
6c97aedf 584 their text starts at zero.). */
e6e265ce 585 if ((execp->a_entry >= obj_textsec(abfd)->vma) &&
6db82ea7 586 (execp->a_entry < obj_textsec(abfd)->vma + obj_textsec(abfd)->_raw_size))
e6e265ce 587 abfd->flags |= EXEC_P;
6c97aedf
ILT		 588#ifdef STAT_FOR_EXEC
589 else
590 {
591 struct stat stat_buf;
592
593 /* The original heuristic doesn't work in some important cases.
594 The a.out file has no information about the text start
595 address. For files (like kernels) linked to non-standard
596 addresses (ld -Ttext nnn) the entry point may not be between
597 the default text start (obj_textsec(abfd)->vma) and
598 (obj_textsec(abfd)->vma) + text size. This is not just a mach
599 issue. Many kernels are loaded at non standard addresses. */
600 if (abfd->iostream
601 && (fstat(fileno((FILE *) (abfd->iostream)), &stat_buf) == 0)
602 && ((stat_buf.st_mode & 0111) != 0))
603 abfd->flags |= EXEC_P;
604 }
605#endif /* STAT_FOR_EXEC */
606
214f8f23
KR		 607 if (result)
608 {
1f29e30b 609#if 0 /* These should be set correctly anyways. */
214f8f23
KR		 610 abfd->sections = obj_textsec (abfd);
611 obj_textsec (abfd)->next = obj_datasec (abfd);
612 obj_datasec (abfd)->next = obj_bsssec (abfd);
1f29e30b 613#endif
214f8f23
KR		 614 }
615 else
616 {
617 free (rawptr);
618 abfd->tdata.aout_data = oldrawptr;
619 }
e6e265ce 620 return result;
7ed4093a
SC		 621}
622
4e41b5aa
SC		 623/*
624FUNCTION
c188b0be 625 aout_@var{size}_mkobject
6f715d66 626
fa2b89f1 627SYNOPSIS
c188b0be
DM		 628 boolean aout_@var{size}_mkobject, (bfd *abfd);
629
630DESCRIPTION
631 Initialize BFD @var{abfd} for use with a.out files.
6f715d66 632*/
7ed4093a
SC		 633
634boolean
8eb5d4be
JK		 635NAME(aout,mkobject) (abfd)
636 bfd *abfd;
7ed4093a 637{
6db82ea7 638 struct aout_data_struct *rawptr;
7ed4093a 639
68241b2b 640 bfd_set_error (bfd_error_system_call);
7ed4093a
SC		 641
642 /* Use an intermediate variable for clarity */
2e235c93 643 rawptr = (struct aout_data_struct *)bfd_zalloc (abfd, sizeof (struct aout_data_struct ));
c188b0be 644
7ed4093a 645 if (rawptr == NULL) {
68241b2b 646 bfd_set_error (bfd_error_no_memory);
7ed4093a
SC		 647 return false;
648 }
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
695 || machine == bfd_mach_sparc64)
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 {
1204 bfd_set_error (bfd_error_nonrepresentable_section);
1205 return false;
1206 }
1207
1208 if (count != 0)
1209 {
1210 if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0
1211 || bfd_write (location, 1, count, abfd) != count)
1212 return false;
1213 }
c188b0be 1214
7ed4093a
SC		 1215 return true;
1216}
1217\f
5c8444f8
ILT		 1218/* Read the external symbols from an a.out file. */
1219
1220static boolean
1221aout_get_external_symbols (abfd)
1222 bfd *abfd;
1223{
1224 if (obj_aout_external_syms (abfd) == (struct external_nlist *) NULL)
1225 {
1226 bfd_size_type count;
1227 struct external_nlist *syms;
1228
1229 count = exec_hdr (abfd)->a_syms / EXTERNAL_NLIST_SIZE;
1230
4fe6d901
KR		 1231 if (bfd_get_file_window (abfd,
1232 obj_sym_filepos (abfd), exec_hdr (abfd)->a_syms,
1233 &obj_aout_sym_window (abfd), 1) == false)
1234 return false;
1235 syms = (struct external_nlist *) obj_aout_sym_window (abfd).data;
5c8444f8
ILT		 1236
1237 obj_aout_external_syms (abfd) = syms;
1238 obj_aout_external_sym_count (abfd) = count;
1239 }
1240
4f019d04
ILT		 1241 if (obj_aout_external_strings (abfd) == NULL
1242 && exec_hdr (abfd)->a_syms != 0)
5c8444f8
ILT		 1243 {
1244 unsigned char string_chars[BYTES_IN_WORD];
1245 bfd_size_type stringsize;
1246 char *strings;
1247
1248 /* Get the size of the strings. */
1249 if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0
1250 || (bfd_read ((PTR) string_chars, BYTES_IN_WORD, 1, abfd)
1251 != BYTES_IN_WORD))
1252 return false;
1253 stringsize = GET_WORD (abfd, string_chars);
1254
4fe6d901
KR		 1255 if (bfd_get_file_window (abfd, obj_str_filepos (abfd), stringsize,
1256 &obj_aout_string_window (abfd), 1) == false)
1257 return false;
1258 strings = (char *) obj_aout_string_window (abfd).data;
5c8444f8 1259
1afd2380
ILT		 1260 /* Ensure that a zero index yields an empty string. */
1261 strings[0] = '\0';
1262
4fe6d901
KR		 1263 /* Using the "window" interface, we don't know that there's
1264 writeable storage after the last byte of the string table.
1265 Besides, every string in the string table should be null
1266 terminated. Check it here so the application doesn't crash,
1267 but don't expend huge effort trying to correct a broken
1268 object file. */
1269 if (stringsize > BYTES_IN_WORD && strings[stringsize - 1] != 0)
1270 {
1271 fprintf (stderr, "string table missing ending null\n");
1272 strings[stringsize - 1] = 0;
1273 }
5c8444f8
ILT		 1274
1275 obj_aout_external_strings (abfd) = strings;
1276 obj_aout_external_string_size (abfd) = stringsize;
1277 }
1278
1279 return true;
1280}
1281
4298e311
ILT		 1282/* Translate an a.out symbol into a BFD symbol. The desc, other, type
1283 and symbol->value fields of CACHE_PTR will be set from the a.out
1284 nlist structure. This function is responsible for setting
1285 symbol->flags and symbol->section, and adjusting symbol->value. */
c188b0be 1286
9783e04a 1287static boolean
4298e311
ILT		 1288translate_from_native_sym_flags (abfd, cache_ptr)
1289 bfd *abfd;
1290 aout_symbol_type *cache_ptr;
9e2dad8e 1291{
4298e311
ILT		 1292 flagword visible;
1293
1294 if ((cache_ptr->type & N_STAB) != 0
1295 || cache_ptr->type == N_FN)
1296 {
1297 asection *sec;
1298
1299 /* This is a debugging symbol. */
1300
1301 cache_ptr->symbol.flags = BSF_DEBUGGING;
1302
1303 /* Work out the symbol section. */
1304 switch (cache_ptr->type & N_TYPE)
1305 {
1306 case N_TEXT:
1307 case N_FN:
1308 sec = obj_textsec (abfd);
1309 break;
1310 case N_DATA:
1311 sec = obj_datasec (abfd);
1312 break;
1313 case N_BSS:
1314 sec = obj_bsssec (abfd);
1315 break;
1316 default:
1317 case N_ABS:
4587b578 1318 sec = bfd_abs_section_ptr;
4298e311
ILT		 1319 break;
1320 }
1321
1322 cache_ptr->symbol.section = sec;
1323 cache_ptr->symbol.value -= sec->vma;
1324
1325 return true;
1326 }
1327
1328 /* Get the default visibility. This does not apply to all types, so
1329 we just hold it in a local variable to use if wanted. */
1330 if ((cache_ptr->type & N_EXT) == 0)
1331 visible = BSF_LOCAL;
1332 else
1333 visible = BSF_GLOBAL;
1334
1335 switch (cache_ptr->type)
6db82ea7 1336 {
4298e311
ILT		 1337 default:
1338 case N_ABS: case N_ABS | N_EXT:
4587b578 1339 cache_ptr->symbol.section = bfd_abs_section_ptr;
4298e311
ILT		 1340 cache_ptr->symbol.flags = visible;
1341 break;
1342
1343 case N_UNDF | N_EXT:
1344 if (cache_ptr->symbol.value != 0)
1345 {
1346 /* This is a common symbol. */
1347 cache_ptr->symbol.flags = BSF_GLOBAL;
4587b578 1348 cache_ptr->symbol.section = bfd_com_section_ptr;
4298e311
ILT		 1349 }
1350 else
1351 {
1352 cache_ptr->symbol.flags = 0;
4587b578 1353 cache_ptr->symbol.section = bfd_und_section_ptr;
4298e311
ILT		 1354 }
1355 break;
1356
1357 case N_TEXT: case N_TEXT | N_EXT:
1358 cache_ptr->symbol.section = obj_textsec (abfd);
1359 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1360 cache_ptr->symbol.flags = visible;
1361 break;
1362
2cd086e3
ILT		 1363 /* N_SETV symbols used to represent set vectors placed in the
1364 data section. They are no longer generated. Theoretically,
1365 it was possible to extract the entries and combine them with
1366 new ones, although I don't know if that was ever actually
1367 done. Unless that feature is restored, treat them as data
1368 symbols. */
1369 case N_SETV: case N_SETV | N_EXT:
4298e311
ILT		 1370 case N_DATA: case N_DATA | N_EXT:
1371 cache_ptr->symbol.section = obj_datasec (abfd);
1372 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1373 cache_ptr->symbol.flags = visible;
1374 break;
1375
1376 case N_BSS: case N_BSS | N_EXT:
1377 cache_ptr->symbol.section = obj_bsssec (abfd);
1378 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1379 cache_ptr->symbol.flags = visible;
1380 break;
1381
964affdc
DM		 1382 case N_SETA: case N_SETA | N_EXT:
1383 case N_SETT: case N_SETT | N_EXT:
1384 case N_SETD: case N_SETD | N_EXT:
1385 case N_SETB: case N_SETB | N_EXT:
ebd24135 1386 {
ebd24135 1387 asection *section;
4298e311 1388 arelent_chain *reloc;
ebd24135 1389 asection *into_section;
9783e04a 1390
4298e311
ILT		 1391 /* This is a set symbol. The name of the symbol is the name
1392 of the set (e.g., __CTOR_LIST__). The value of the symbol
1393 is the value to add to the set. We create a section with
1394 the same name as the symbol, and add a reloc to insert the
1395 appropriate value into the section.
1396
1397 This action is actually obsolete; it used to make the
1398 linker do the right thing, but the linker no longer uses
1399 this function. */
1400
1401 section = bfd_get_section_by_name (abfd, cache_ptr->symbol.name);
1402 if (section == NULL)
1403 {
1404 char *copy;
1405
1406 copy = bfd_alloc (abfd, strlen (cache_ptr->symbol.name) + 1);
1407 if (copy == NULL)
1408 {
1409 bfd_set_error (bfd_error_no_memory);
1410 return false;
1411 }
1412
1413 strcpy (copy, cache_ptr->symbol.name);
1414 section = bfd_make_section (abfd, copy);
1415 if (section == NULL)
1416 return false;
1417 }
1418
1419 reloc = (arelent_chain *) bfd_alloc (abfd, sizeof (arelent_chain));
1420 if (reloc == NULL)
9783e04a 1421 {
68241b2b 1422 bfd_set_error (bfd_error_no_memory);
9783e04a
DM		 1423 return false;
1424 }
1425
4298e311
ILT		 1426 /* Build a relocation entry for the constructor. */
1427 switch (cache_ptr->type & N_TYPE)
a99c3d70 1428 {
4298e311 1429 case N_SETA:
4587b578 1430 into_section = bfd_abs_section_ptr;
ebd24135
ILT		 1431 cache_ptr->type = N_ABS;
1432 break;
4298e311
ILT		 1433 case N_SETT:
1434 into_section = obj_textsec (abfd);
ebd24135
ILT		 1435 cache_ptr->type = N_TEXT;
1436 break;
4298e311
ILT		 1437 case N_SETD:
1438 into_section = obj_datasec (abfd);
ebd24135
ILT		 1439 cache_ptr->type = N_DATA;
1440 break;
4298e311
ILT		 1441 case N_SETB:
1442 into_section = obj_bsssec (abfd);
ebd24135
ILT		 1443 cache_ptr->type = N_BSS;
1444 break;
ebd24135 1445 }
88dfcd68 1446
4298e311
ILT		 1447 /* Build a relocation pointing into the constructor section
1448 pointing at the symbol in the set vector specified. */
ebd24135 1449 reloc->relent.addend = cache_ptr->symbol.value;
4298e311 1450 cache_ptr->symbol.section = into_section;
ebd24135 1451 reloc->relent.sym_ptr_ptr = into_section->symbol_ptr_ptr;
6db82ea7 1452
4298e311
ILT		 1453 /* We modify the symbol to belong to a section depending upon
1454 the name of the symbol, and add to the size of the section
1455 to contain a pointer to the symbol. Build a reloc entry to
1456 relocate to this symbol attached to this section. */
a8a916c8 1457 section->flags = SEC_CONSTRUCTOR | SEC_RELOC;
a99c3d70 1458
ebd24135
ILT		 1459 section->reloc_count++;
1460 section->alignment_power = 2;
a99c3d70 1461
ebd24135
ILT		 1462 reloc->next = section->constructor_chain;
1463 section->constructor_chain = reloc;
1464 reloc->relent.address = section->_raw_size;
4298e311
ILT		 1465 section->_raw_size += BYTES_IN_WORD;
1466
f42fe159 1467 reloc->relent.howto = CTOR_TABLE_RELOC_HOWTO(abfd);
a99c3d70 1468
ebd24135
ILT		 1469 cache_ptr->symbol.flags |= BSF_CONSTRUCTOR;
1470 }
1471 break;
0c205af2 1472
4298e311
ILT		 1473 case N_WARNING:
1474 /* This symbol is the text of a warning message. The next
1475 symbol is the symbol to associate the warning with. If a
1476 reference is made to that symbol, a warning is issued. */
1477 cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_WARNING;
4587b578 1478 cache_ptr->symbol.section = bfd_abs_section_ptr;
4298e311 1479 break;
ebd24135 1480
4298e311
ILT		 1481 case N_INDR: case N_INDR | N_EXT:
1482 /* An indirect symbol. This consists of two symbols in a row.
1483 The first symbol is the name of the indirection. The second
1484 symbol is the name of the target. A reference to the first
1485 symbol becomes a reference to the second. */
1486 cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_INDIRECT | visible;
4587b578 1487 cache_ptr->symbol.section = bfd_ind_section_ptr;
4298e311
ILT		 1488 break;
1489
1490 case N_WEAKU:
4587b578 1491 cache_ptr->symbol.section = bfd_und_section_ptr;
4298e311
ILT		 1492 cache_ptr->symbol.flags = BSF_WEAK;
1493 break;
1494
1495 case N_WEAKA:
4587b578 1496 cache_ptr->symbol.section = bfd_abs_section_ptr;
4298e311
ILT		 1497 cache_ptr->symbol.flags = BSF_WEAK;
1498 break;
1499
1500 case N_WEAKT:
1501 cache_ptr->symbol.section = obj_textsec (abfd);
1502 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1503 cache_ptr->symbol.flags = BSF_WEAK;
1504 break;
1505
1506 case N_WEAKD:
1507 cache_ptr->symbol.section = obj_datasec (abfd);
1508 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1509 cache_ptr->symbol.flags = BSF_WEAK;
1510 break;
1511
1512 case N_WEAKB:
1513 cache_ptr->symbol.section = obj_bsssec (abfd);
1514 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1515 cache_ptr->symbol.flags = BSF_WEAK;
1516 break;
a99c3d70 1517 }
4298e311 1518
9783e04a 1519 return true;
7ed4093a
SC		 1520}
1521
4298e311 1522/* Set the fields of SYM_POINTER according to CACHE_PTR. */
6db82ea7 1523
4c3721d5 1524static boolean
4298e311 1525translate_to_native_sym_flags (abfd, cache_ptr, sym_pointer)
8eb5d4be 1526 bfd *abfd;
4298e311
ILT		 1527 asymbol *cache_ptr;
1528 struct external_nlist *sym_pointer;
7ed4093a
SC		 1529{
1530 bfd_vma value = cache_ptr->value;
943fbd5b
KR		 1531 asection *sec;
1532 bfd_vma off;
7ed4093a 1533
4298e311
ILT		 1534 /* Mask out any existing type bits in case copying from one section
1535 to another. */
10dea9ed 1536 sym_pointer->e_type[0] &= ~N_TYPE;
a99c3d70 1537
943fbd5b
KR		 1538 sec = bfd_get_section (cache_ptr);
1539 off = 0;
1540
1541 if (sec == NULL)
4298e311 1542 {
943fbd5b
KR		 1543 /* This case occurs, e.g., for the *DEBUG* section of a COFF
1544 file. */
4298e311
ILT		 1545 bfd_set_error (bfd_error_nonrepresentable_section);
1546 return false;
1547 }
943fbd5b
KR		 1548
1549 if (sec->output_section != NULL)
1550 {
1551 off = sec->output_offset;
1552 sec = sec->output_section;
1553 }
1554
1555 if (bfd_is_abs_section (sec))
1556 sym_pointer->e_type[0] |= N_ABS;
1557 else if (sec == obj_textsec (abfd))
1558 sym_pointer->e_type[0] |= N_TEXT;
1559 else if (sec == obj_datasec (abfd))
1560 sym_pointer->e_type[0] |= N_DATA;
1561 else if (sec == obj_bsssec (abfd))
1562 sym_pointer->e_type[0] |= N_BSS;
1563 else if (bfd_is_und_section (sec))
4587b578 1564 sym_pointer->e_type[0] = N_UNDF | N_EXT;
943fbd5b 1565 else if (bfd_is_ind_section (sec))
4587b578 1566 sym_pointer->e_type[0] = N_INDR;
943fbd5b 1567 else if (bfd_is_com_section (sec))
4298e311
ILT		 1568 sym_pointer->e_type[0] = N_UNDF | N_EXT;
1569 else
1570 {
1571 bfd_set_error (bfd_error_nonrepresentable_section);
1572 return false;
1573 }
6f56c941 1574
6db82ea7 1575 /* Turn the symbol from section relative to absolute again */
943fbd5b 1576 value += sec->vma + off;
c188b0be 1577
4298e311 1578 if ((cache_ptr->flags & BSF_WARNING) != 0)
d7e34f67 1579 sym_pointer->e_type[0] = N_WARNING;
c188b0be 1580
4298e311
ILT		 1581 if ((cache_ptr->flags & BSF_DEBUGGING) != 0)
1582 sym_pointer->e_type[0] = ((aout_symbol_type *) cache_ptr)->type;
1583 else if ((cache_ptr->flags & BSF_GLOBAL) != 0)
3caa6924 1584 sym_pointer->e_type[0] |= N_EXT;
4298e311
ILT		 1585
1586 if ((cache_ptr->flags & BSF_CONSTRUCTOR) != 0)
1587 {
1588 int type = ((aout_symbol_type *) cache_ptr)->type;
1589 switch (type)
1590 {
1591 case N_ABS: type = N_SETA; break;
1592 case N_TEXT: type = N_SETT; break;
1593 case N_DATA: type = N_SETD; break;
1594 case N_BSS: type = N_SETB; break;
1595 }
1596 sym_pointer->e_type[0] = type;
1597 }
1598
1599 if ((cache_ptr->flags & BSF_WEAK) != 0)
1600 {
1601 int type;
1602
1603 switch (sym_pointer->e_type[0] & N_TYPE)
1604 {
1605 default:
1606 case N_ABS: type = N_WEAKA; break;
1607 case N_TEXT: type = N_WEAKT; break;
1608 case N_DATA: type = N_WEAKD; break;
1609 case N_BSS: type = N_WEAKB; break;
1610 case N_UNDF: type = N_WEAKU; break;
1611 }
1612 sym_pointer->e_type[0] = type;
1613 }
6db82ea7 1614
7ed4093a 1615 PUT_WORD(abfd, value, sym_pointer->e_value);
4c3721d5
ILT		 1616
1617 return true;
7ed4093a
SC		 1618}
1619\f
1620/* Native-level interface to symbols. */
1621
7ed4093a 1622asymbol *
8eb5d4be
JK		 1623NAME(aout,make_empty_symbol) (abfd)
1624 bfd *abfd;
9e2dad8e
JG		 1625{
1626 aout_symbol_type *new =
1627 (aout_symbol_type *)bfd_zalloc (abfd, sizeof (aout_symbol_type));
9783e04a
DM		 1628 if (!new)
1629 {
68241b2b 1630 bfd_set_error (bfd_error_no_memory);
9783e04a
DM		 1631 return NULL;
1632 }
9e2dad8e 1633 new->symbol.the_bfd = abfd;
fa2b89f1 1634
9e2dad8e
JG		 1635 return &new->symbol;
1636}
7ed4093a 1637
0ee75d02
ILT		 1638/* Translate a set of internal symbols into external symbols. */
1639
fa77c704
ILT		 1640boolean
1641NAME(aout,translate_symbol_table) (abfd, in, ext, count, str, strsize, dynamic)
0ee75d02
ILT		 1642 bfd *abfd;
1643 aout_symbol_type *in;
1644 struct external_nlist *ext;
1645 bfd_size_type count;
1646 char *str;
1647 bfd_size_type strsize;
1648 boolean dynamic;
1649{
1650 struct external_nlist *ext_end;
1651
1652 ext_end = ext + count;
1653 for (; ext < ext_end; ext++, in++)
1654 {
1655 bfd_vma x;
1656
1657 x = GET_WORD (abfd, ext->e_strx);
1658 in->symbol.the_bfd = abfd;
ca1c6bec
ILT		 1659
1660 /* For the normal symbols, the zero index points at the number
1661 of bytes in the string table but is to be interpreted as the
1662 null string. For the dynamic symbols, the number of bytes in
1663 the string table is stored in the __DYNAMIC structure and the
1664 zero index points at an actual string. */
1665 if (x == 0 && ! dynamic)
1666 in->symbol.name = "";
1667 else if (x < strsize)
0ee75d02
ILT		 1668 in->symbol.name = str + x;
1669 else
1670 return false;
1671
1672 in->symbol.value = GET_SWORD (abfd, ext->e_value);
1673 in->desc = bfd_h_get_16 (abfd, ext->e_desc);
1674 in->other = bfd_h_get_8 (abfd, ext->e_other);
1675 in->type = bfd_h_get_8 (abfd, ext->e_type);
74942465 1676 in->symbol.udata.p = NULL;
0ee75d02 1677
4298e311 1678 if (! translate_from_native_sym_flags (abfd, in))
9783e04a 1679 return false;
0ee75d02
ILT		 1680
1681 if (dynamic)
1682 in->symbol.flags |= BSF_DYNAMIC;
1683 }
1684
1685 return true;
1686}
1687
1688/* We read the symbols into a buffer, which is discarded when this
1689 function exits. We read the strings into a buffer large enough to
1690 hold them all plus all the cached symbol entries. */
1691
7ed4093a 1692boolean
8eb5d4be
JK		 1693NAME(aout,slurp_symbol_table) (abfd)
1694 bfd *abfd;
9e2dad8e 1695{
5c8444f8 1696 struct external_nlist *old_external_syms;
9e2dad8e 1697 aout_symbol_type *cached;
5c8444f8 1698 size_t cached_size;
0f213cc2 1699
9e2dad8e 1700 /* If there's no work to be done, don't do any */
5c8444f8
ILT		 1701 if (obj_aout_symbols (abfd) != (aout_symbol_type *) NULL)
1702 return true;
1703
1704 old_external_syms = obj_aout_external_syms (abfd);
1705
1706 if (! aout_get_external_symbols (abfd))
1707 return false;
1708
fa77c704 1709 cached_size = (obj_aout_external_sym_count (abfd)
5c8444f8
ILT		 1710 * sizeof (aout_symbol_type));
1711 cached = (aout_symbol_type *) malloc (cached_size);
74942465 1712 if (cached == NULL && cached_size != 0)
9783e04a 1713 {
68241b2b 1714 bfd_set_error (bfd_error_no_memory);
9783e04a
DM		 1715 return false;
1716 }
74942465
ILT		 1717 if (cached_size != 0)
1718 memset (cached, 0, cached_size);
5c8444f8
ILT		 1719
1720 /* Convert from external symbol information to internal. */
fa77c704
ILT		 1721 if (! (NAME(aout,translate_symbol_table)
1722 (abfd, cached,
1723 obj_aout_external_syms (abfd),
1724 obj_aout_external_sym_count (abfd),
1725 obj_aout_external_strings (abfd),
1726 obj_aout_external_string_size (abfd),
1727 false)))
0f213cc2 1728 {
5c8444f8 1729 free (cached);
0f213cc2
KR		 1730 return false;
1731 }
1732
fa77c704 1733 bfd_get_symcount (abfd) = obj_aout_external_sym_count (abfd);
0f213cc2 1734
5c8444f8 1735 obj_aout_symbols (abfd) = cached;
0f213cc2 1736
5c8444f8
ILT		 1737 /* It is very likely that anybody who calls this function will not
1738 want the external symbol information, so if it was allocated
1739 because of our call to aout_get_external_symbols, we free it up
1740 right away to save space. */
1741 if (old_external_syms == (struct external_nlist *) NULL
1742 && obj_aout_external_syms (abfd) != (struct external_nlist *) NULL)
1743 {
4fe6d901 1744 bfd_free_window (&obj_aout_sym_window (abfd));
5c8444f8 1745 obj_aout_external_syms (abfd) = NULL;
0ee75d02 1746 }
0f213cc2 1747
9e2dad8e
JG		 1748 return true;
1749}
0f213cc2 1750\f
d17fc4c9
ILT		 1751/* We use a hash table when writing out symbols so that we only write
1752 out a particular string once. This helps particularly when the
1753 linker writes out stabs debugging entries, because each different
1754 contributing object file tends to have many duplicate stabs
1755 strings.
1756
d63d0479
ILT		 1757 This hash table code breaks dbx on SunOS 4.1.3, so we don't do it
1758 if BFD_TRADITIONAL_FORMAT is set. */
0f213cc2 1759
d17fc4c9 1760static bfd_size_type add_to_stringtab
1afd2380
ILT		 1761 PARAMS ((bfd *, struct bfd_strtab_hash *, const char *, boolean));
1762static boolean emit_stringtab PARAMS ((bfd *, struct bfd_strtab_hash *));
d17fc4c9
ILT		 1763
1764/* Get the index of a string in a strtab, adding it if it is not
1afd2380 1765 already present. */
d17fc4c9
ILT		 1766
1767static INLINE bfd_size_type
1768add_to_stringtab (abfd, tab, str, copy)
0f213cc2 1769 bfd *abfd;
1afd2380 1770 struct bfd_strtab_hash *tab;
d17fc4c9
ILT		 1771 const char *str;
1772 boolean copy;
0f213cc2 1773{
1afd2380 1774 boolean hash;
435b470e 1775 bfd_size_type index;
0f213cc2 1776
d17fc4c9 1777 /* An index of 0 always means the empty string. */
204ba9e3 1778 if (str == 0 || *str == '\0')
d17fc4c9 1779 return 0;
0f213cc2 1780
1afd2380
ILT		 1781 /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx
1782 doesn't understand a hashed string table. */
1783 hash = true;
1784 if ((abfd->flags & BFD_TRADITIONAL_FORMAT) != 0)
1785 hash = false;
0f213cc2 1786
435b470e
ILT		 1787 index = _bfd_stringtab_add (tab, str, hash, copy);
1788
1789 if (index != (bfd_size_type) -1)
1790 {
1791 /* Add BYTES_IN_WORD to the return value to account for the
1792 space taken up by the string table size. */
1793 index += BYTES_IN_WORD;
1794 }
1795
1796 return index;
0f213cc2
KR		 1797}
1798
d17fc4c9
ILT		 1799/* Write out a strtab. ABFD is already at the right location in the
1800 file. */
1801
29e626eb 1802static boolean
d17fc4c9
ILT		 1803emit_stringtab (abfd, tab)
1804 register bfd *abfd;
1afd2380 1805 struct bfd_strtab_hash *tab;
0f213cc2 1806{
d17fc4c9 1807 bfd_byte buffer[BYTES_IN_WORD];
0f213cc2 1808
1afd2380
ILT		 1809 /* The string table starts with the size. */
1810 PUT_WORD (abfd, _bfd_stringtab_size (tab) + BYTES_IN_WORD, buffer);
29e626eb
ILT		 1811 if (bfd_write ((PTR) buffer, 1, BYTES_IN_WORD, abfd) != BYTES_IN_WORD)
1812 return false;
0f213cc2 1813
1afd2380 1814 return _bfd_stringtab_emit (abfd, tab);
0f213cc2 1815}
d17fc4c9 1816\f
4c3721d5 1817boolean
8eb5d4be
JK		 1818NAME(aout,write_syms) (abfd)
1819 bfd *abfd;
0f213cc2
KR		 1820{
1821 unsigned int count ;
1822 asymbol **generic = bfd_get_outsymbols (abfd);
1afd2380 1823 struct bfd_strtab_hash *strtab;
0f213cc2 1824
1afd2380
ILT		 1825 strtab = _bfd_stringtab_init ();
1826 if (strtab == NULL)
d17fc4c9 1827 return false;
0f213cc2
KR		 1828
1829 for (count = 0; count < bfd_get_symcount (abfd); count++)
1830 {
7ed4093a 1831 asymbol *g = generic[count];
d17fc4c9 1832 bfd_size_type indx;
7ed4093a 1833 struct external_nlist nsp;
6db82ea7 1834
1afd2380 1835 indx = add_to_stringtab (abfd, strtab, g->name, false);
d17fc4c9
ILT		 1836 if (indx == (bfd_size_type) -1)
1837 goto error_return;
1838 PUT_WORD (abfd, indx, (bfd_byte *) nsp.e_strx);
6db82ea7 1839
0f213cc2
KR		 1840 if (bfd_asymbol_flavour(g) == abfd->xvec->flavour)
1841 {
1842 bfd_h_put_16(abfd, aout_symbol(g)->desc, nsp.e_desc);
1843 bfd_h_put_8(abfd, aout_symbol(g)->other, nsp.e_other);
1844 bfd_h_put_8(abfd, aout_symbol(g)->type, nsp.e_type);
1845 }
7ed4093a 1846 else
0f213cc2
KR		 1847 {
1848 bfd_h_put_16(abfd,0, nsp.e_desc);
1849 bfd_h_put_8(abfd, 0, nsp.e_other);
1850 bfd_h_put_8(abfd, 0, nsp.e_type);
1851 }
7b02b4ed 1852
4298e311 1853 if (! translate_to_native_sym_flags (abfd, g, &nsp))
d17fc4c9 1854 goto error_return;
7b02b4ed 1855
4c3721d5
ILT		 1856 if (bfd_write((PTR)&nsp,1,EXTERNAL_NLIST_SIZE, abfd)
1857 != EXTERNAL_NLIST_SIZE)
d17fc4c9 1858 goto error_return;
7ed4093a 1859
ae115e51 1860 /* NB: `KEEPIT' currently overlays `udata.p', so set this only
0f213cc2
KR		 1861 here, at the end. */
1862 g->KEEPIT = count;
1863 }
7ed4093a 1864
1afd2380 1865 if (! emit_stringtab (abfd, strtab))
d17fc4c9
ILT		 1866 goto error_return;
1867
1afd2380 1868 _bfd_stringtab_free (strtab);
d17fc4c9
ILT		 1869
1870 return true;
1871
1872error_return:
1afd2380 1873 _bfd_stringtab_free (strtab);
d17fc4c9 1874 return false;
0f213cc2 1875}
7ed4093a 1876
0f213cc2 1877\f
326e32d7 1878long
8eb5d4be
JK		 1879NAME(aout,get_symtab) (abfd, location)
1880 bfd *abfd;
1881 asymbol **location;
3f7607af 1882{
7ed4093a
SC		 1883 unsigned int counter = 0;
1884 aout_symbol_type *symbase;
ce07dd7c 1885
326e32d7
ILT		 1886 if (!NAME(aout,slurp_symbol_table)(abfd))
1887 return -1;
ce07dd7c 1888
7ed4093a
SC		 1889 for (symbase = obj_aout_symbols(abfd); counter++ < bfd_get_symcount (abfd);)
1890 *(location++) = (asymbol *)( symbase++);
1891 *location++ =0;
ce07dd7c 1892 return bfd_get_symcount (abfd);
3f7607af 1893}
7ed4093a
SC		 1894
1895\f
1896/* Standard reloc stuff */
1897/* Output standard relocation information to a file in target byte order. */
1898
1899void
8eb5d4be
JK		 1900NAME(aout,swap_std_reloc_out) (abfd, g, natptr)
1901 bfd *abfd;
1902 arelent *g;
1903 struct reloc_std_external *natptr;
3f7607af 1904{
6db82ea7
SC		 1905 int r_index;
1906 asymbol *sym = *(g->sym_ptr_ptr);
1907 int r_extern;
1908 unsigned int r_length;
1909 int r_pcrel;
1910 int r_baserel, r_jmptable, r_relative;
6db82ea7 1911 asection *output_section = sym->section->output_section;
ce07dd7c 1912
6db82ea7 1913 PUT_WORD(abfd, g->address, natptr->r_address);
ce07dd7c 1914
6db82ea7
SC		 1915 r_length = g->howto->size ; /* Size as a power of two */
1916 r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */
c188b0be
DM		 1917 /* XXX This relies on relocs coming from a.out files. */
1918 r_baserel = (g->howto->type & 8) != 0;
cb9461ff
JK		 1919 r_jmptable = (g->howto->type & 16) != 0;
1920 r_relative = (g->howto->type & 32) != 0;
c188b0be 1921
728472f1
ILT		 1922#if 0
1923 /* For a standard reloc, the addend is in the object file. */
6db82ea7 1924 r_addend = g->addend + (*(g->sym_ptr_ptr))->section->output_section->vma;
728472f1 1925#endif
c188b0be 1926
6db82ea7
SC		 1927 /* name was clobbered by aout_write_syms to be symbol index */
1928
c188b0be 1929 /* If this relocation is relative to a symbol then set the
2768b3f7
SC		 1930 r_index to the symbols index, and the r_extern bit.
1931
1932 Absolute symbols can come in in two ways, either as an offset
1933 from the abs section, or as a symbol which has an abs value.
1934 check for that here
1935 */
c188b0be 1936
2768b3f7 1937
382f2a3d 1938 if (bfd_is_com_section (output_section)
4587b578
ILT		 1939 || bfd_is_abs_section (output_section)
1940 || bfd_is_und_section (output_section))
ce07dd7c 1941 {
4587b578 1942 if (bfd_abs_section_ptr->symbol == sym)
2768b3f7
SC		 1943 {
1944 /* Whoops, looked like an abs symbol, but is really an offset
1945 from the abs section */
1946 r_index = 0;
1947 r_extern = 0;
1948 }
c188b0be 1949 else
2768b3f7
SC		 1950 {
1951 /* Fill in symbol */
1952 r_extern = 1;
ae115e51 1953 r_index = (*(g->sym_ptr_ptr))->KEEPIT;
c188b0be 1954
2768b3f7 1955 }
ce07dd7c 1956 }
c188b0be 1957 else
ce07dd7c
KR		 1958 {
1959 /* Just an ordinary section */
1960 r_extern = 0;
c188b0be 1961 r_index = output_section->target_index;
ce07dd7c
KR		 1962 }
1963
6db82ea7
SC		 1964 /* now the fun stuff */
1965 if (abfd->xvec->header_byteorder_big_p != false) {
7ed4093a
SC		 1966 natptr->r_index[0] = r_index >> 16;
1967 natptr->r_index[1] = r_index >> 8;
1968 natptr->r_index[2] = r_index;
1969 natptr->r_type[0] =
6db82ea7
SC		 1970 (r_extern? RELOC_STD_BITS_EXTERN_BIG: 0)
1971 | (r_pcrel? RELOC_STD_BITS_PCREL_BIG: 0)
1972 | (r_baserel? RELOC_STD_BITS_BASEREL_BIG: 0)
1973 | (r_jmptable? RELOC_STD_BITS_JMPTABLE_BIG: 0)
1974 | (r_relative? RELOC_STD_BITS_RELATIVE_BIG: 0)
1975 | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG);
7ed4093a 1976 } else {
6db82ea7
SC		 1977 natptr->r_index[2] = r_index >> 16;
1978 natptr->r_index[1] = r_index >> 8;
1979 natptr->r_index[0] = r_index;
1980 natptr->r_type[0] =
1981 (r_extern? RELOC_STD_BITS_EXTERN_LITTLE: 0)
7ed4093a 1982 | (r_pcrel? RELOC_STD_BITS_PCREL_LITTLE: 0)
6db82ea7
SC		 1983 | (r_baserel? RELOC_STD_BITS_BASEREL_LITTLE: 0)
1984 | (r_jmptable? RELOC_STD_BITS_JMPTABLE_LITTLE: 0)
1985 | (r_relative? RELOC_STD_BITS_RELATIVE_LITTLE: 0)
1986 | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE);
1987 }
3f7607af 1988}
7ed4093a
SC		 1989
1990
1991/* Extended stuff */
1992/* Output extended relocation information to a file in target byte order. */
1993
1994void
8eb5d4be
JK		 1995NAME(aout,swap_ext_reloc_out) (abfd, g, natptr)
1996 bfd *abfd;
1997 arelent *g;
1998 register struct reloc_ext_external *natptr;
3f7607af 1999{
6db82ea7
SC		 2000 int r_index;
2001 int r_extern;
2002 unsigned int r_type;
2003 unsigned int r_addend;
c188b0be 2004 asymbol *sym = *(g->sym_ptr_ptr);
6db82ea7 2005 asection *output_section = sym->section->output_section;
c188b0be 2006
6db82ea7 2007 PUT_WORD (abfd, g->address, natptr->r_address);
c188b0be 2008
6db82ea7 2009 r_type = (unsigned int) g->howto->type;
7ed4093a 2010
ae115e51
ILT		 2011 r_addend = g->addend;
2012 if ((sym->flags & BSF_SECTION_SYM) != 0)
2013 r_addend += (*(g->sym_ptr_ptr))->section->output_section->vma;
7ed4093a 2014
c188b0be 2015 /* If this relocation is relative to a symbol then set the
2768b3f7
SC		 2016 r_index to the symbols index, and the r_extern bit.
2017
2018 Absolute symbols can come in in two ways, either as an offset
2019 from the abs section, or as a symbol which has an abs value.
c188b0be
DM		 2020 check for that here. */
2021
ae115e51 2022 if (bfd_is_abs_section (bfd_get_section (sym)))
2768b3f7 2023 {
2768b3f7 2024 r_extern = 0;
ae115e51
ILT		 2025 r_index = 0;
2026 }
2027 else if ((sym->flags & BSF_SECTION_SYM) == 0)
2768b3f7 2028 {
f69e888e
ILT		 2029 if (bfd_is_und_section (bfd_get_section (sym))
2030 || (sym->flags & BSF_GLOBAL) != 0)
2031 r_extern = 1;
2032 else
2033 r_extern = 0;
ae115e51 2034 r_index = (*(g->sym_ptr_ptr))->KEEPIT;
2768b3f7 2035 }
c188b0be 2036 else
ae115e51
ILT		 2037 {
2038 /* Just an ordinary section */
2039 r_extern = 0;
2040 r_index = output_section->target_index;
2041 }
c188b0be 2042
7ed4093a
SC		 2043 /* now the fun stuff */
2044 if (abfd->xvec->header_byteorder_big_p != false) {
2768b3f7
SC		 2045 natptr->r_index[0] = r_index >> 16;
2046 natptr->r_index[1] = r_index >> 8;
2047 natptr->r_index[2] = r_index;
2048 natptr->r_type[0] =
c188b0be
DM		 2049 ((r_extern? RELOC_EXT_BITS_EXTERN_BIG: 0)
2050 | (r_type << RELOC_EXT_BITS_TYPE_SH_BIG));
2768b3f7
SC		 2051 } else {
2052 natptr->r_index[2] = r_index >> 16;
2053 natptr->r_index[1] = r_index >> 8;
2054 natptr->r_index[0] = r_index;
2055 natptr->r_type[0] =
2056 (r_extern? RELOC_EXT_BITS_EXTERN_LITTLE: 0)
2057 | (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE);
2058 }
7ed4093a
SC		 2059
2060 PUT_WORD (abfd, r_addend, natptr->r_addend);
2061}
2062
6db82ea7
SC		 2063/* BFD deals internally with all things based from the section they're
2064 in. so, something in 10 bytes into a text section with a base of
c188b0be 2065 50 would have a symbol (.text+10) and know .text vma was 50.
6db82ea7
SC		 2066
2067 Aout keeps all it's symbols based from zero, so the symbol would
2068 contain 60. This macro subs the base of each section from the value
2069 to give the true offset from the section */
2070
2071
7ed4093a
SC		 2072#define MOVE_ADDRESS(ad) \
2073 if (r_extern) { \
6db82ea7
SC		 2074 /* undefined symbol */ \
2075 cache_ptr->sym_ptr_ptr = symbols + r_index; \
2076 cache_ptr->addend = ad; \
2077 } else { \
2078 /* defined, section relative. replace symbol with pointer to \
2079 symbol which points to section */ \
7ed4093a
SC		 2080 switch (r_index) { \
2081 case N_TEXT: \
2082 case N_TEXT | N_EXT: \
6db82ea7 2083 cache_ptr->sym_ptr_ptr = obj_textsec(abfd)->symbol_ptr_ptr; \
7ed4093a
SC		 2084 cache_ptr->addend = ad - su->textsec->vma; \
2085 break; \
2086 case N_DATA: \
2087 case N_DATA | N_EXT: \
6db82ea7 2088 cache_ptr->sym_ptr_ptr = obj_datasec(abfd)->symbol_ptr_ptr; \
7ed4093a
SC		 2089 cache_ptr->addend = ad - su->datasec->vma; \
2090 break; \
2091 case N_BSS: \
2092 case N_BSS | N_EXT: \
6db82ea7 2093 cache_ptr->sym_ptr_ptr = obj_bsssec(abfd)->symbol_ptr_ptr; \
7ed4093a
SC		 2094 cache_ptr->addend = ad - su->bsssec->vma; \
2095 break; \
6db82ea7 2096 default: \
7ed4093a
SC		 2097 case N_ABS: \
2098 case N_ABS | N_EXT: \
4587b578 2099 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \
6db82ea7 2100 cache_ptr->addend = ad; \
7ed4093a
SC		 2101 break; \
2102 } \
2103 } \
2104
2105void
2f675427 2106NAME(aout,swap_ext_reloc_in) (abfd, bytes, cache_ptr, symbols, symcount)
8eb5d4be
JK		 2107 bfd *abfd;
2108 struct reloc_ext_external *bytes;
2109 arelent *cache_ptr;
2110 asymbol **symbols;
2f675427 2111 bfd_size_type symcount;
7ed4093a 2112{
ae115e51 2113 unsigned int r_index;
7ed4093a
SC		 2114 int r_extern;
2115 unsigned int r_type;
6db82ea7 2116 struct aoutdata *su = &(abfd->tdata.aout_data->a);
7ed4093a
SC		 2117
2118 cache_ptr->address = (GET_SWORD (abfd, bytes->r_address));
2119
2120 /* now the fun stuff */
2121 if (abfd->xvec->header_byteorder_big_p != false) {
382f2a3d
ILT		 2122 r_index = (bytes->r_index[0] << 16)
2123 | (bytes->r_index[1] << 8)
2124 | bytes->r_index[2];
7ed4093a
SC		 2125 r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG));
2126 r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
2127 >> RELOC_EXT_BITS_TYPE_SH_BIG;
2128 } else {
382f2a3d
ILT		 2129 r_index = (bytes->r_index[2] << 16)
2130 | (bytes->r_index[1] << 8)
2131 | bytes->r_index[0];
7ed4093a
SC		 2132 r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE));
2133 r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
2134 >> RELOC_EXT_BITS_TYPE_SH_LITTLE;
2135 }
2136
2f675427
ILT		 2137 cache_ptr->howto = howto_table_ext + r_type;
2138
2139 /* Base relative relocs are always against the symbol table,
2140 regardless of the setting of r_extern. r_extern just reflects
2141 whether the symbol the reloc is against is local or global. */
2142 if (r_type == RELOC_BASE10
2143 || r_type == RELOC_BASE13
2144 || r_type == RELOC_BASE22)
2145 r_extern = 1;
2146
2147 if (r_extern && r_index > symcount)
773033d2
ILT		 2148 {
2149 /* We could arrange to return an error, but it might be useful
2150 to see the file even if it is bad. */
2151 r_extern = 0;
2152 r_index = N_ABS;
2153 }
2154
6db82ea7 2155 MOVE_ADDRESS(GET_SWORD(abfd, bytes->r_addend));
7ed4093a
SC		 2156}
2157
2158void
2f675427 2159NAME(aout,swap_std_reloc_in) (abfd, bytes, cache_ptr, symbols, symcount)
8eb5d4be
JK		 2160 bfd *abfd;
2161 struct reloc_std_external *bytes;
2162 arelent *cache_ptr;
2163 asymbol **symbols;
2f675427 2164 bfd_size_type symcount;
7ed4093a 2165{
ae115e51 2166 unsigned int r_index;
7ed4093a
SC		 2167 int r_extern;
2168 unsigned int r_length;
2169 int r_pcrel;
2170 int r_baserel, r_jmptable, r_relative;
6db82ea7 2171 struct aoutdata *su = &(abfd->tdata.aout_data->a);
ae115e51 2172 unsigned int howto_idx;
7ed4093a 2173
34dd8ba3 2174 cache_ptr->address = bfd_h_get_32 (abfd, bytes->r_address);
7ed4093a
SC		 2175
2176 /* now the fun stuff */
2177 if (abfd->xvec->header_byteorder_big_p != false) {
382f2a3d
ILT		 2178 r_index = (bytes->r_index[0] << 16)
2179 | (bytes->r_index[1] << 8)
2180 | bytes->r_index[2];
7ed4093a
SC		 2181 r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
2182 r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
2183 r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_BIG));
2184 r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG));
2185 r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG));
c188b0be 2186 r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_BIG)
7ed4093a
SC		 2187 >> RELOC_STD_BITS_LENGTH_SH_BIG;
2188 } else {
382f2a3d
ILT		 2189 r_index = (bytes->r_index[2] << 16)
2190 | (bytes->r_index[1] << 8)
2191 | bytes->r_index[0];
7ed4093a
SC		 2192 r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
2193 r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
2194 r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE));
2195 r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE));
2196 r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE));
c188b0be 2197 r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE)
7ed4093a
SC		 2198 >> RELOC_STD_BITS_LENGTH_SH_LITTLE;
2199 }
2200
cb9461ff
JK		 2201 howto_idx = r_length + 4 * r_pcrel + 8 * r_baserel
2202 + 16 * r_jmptable + 32 * r_relative;
c188b0be
DM		 2203 BFD_ASSERT (howto_idx < TABLE_SIZE (howto_table_std));
2204 cache_ptr->howto = howto_table_std + howto_idx;
ae115e51 2205 BFD_ASSERT (cache_ptr->howto->type != (unsigned int) -1);
7ed4093a 2206
2f675427
ILT		 2207 /* Base relative relocs are always against the symbol table,
2208 regardless of the setting of r_extern. r_extern just reflects
2209 whether the symbol the reloc is against is local or global. */
2210 if (r_baserel)
2211 r_extern = 1;
2212
2213 if (r_extern && r_index > symcount)
773033d2
ILT		 2214 {
2215 /* We could arrange to return an error, but it might be useful
2216 to see the file even if it is bad. */
2217 r_extern = 0;
2218 r_index = N_ABS;
2219 }
2220
7ed4093a
SC		 2221 MOVE_ADDRESS(0);
2222}
2223
5c8444f8 2224/* Read and swap the relocs for a section. */
7ed4093a
SC		 2225
2226boolean
8eb5d4be
JK		 2227NAME(aout,slurp_reloc_table) (abfd, asect, symbols)
2228 bfd *abfd;
2229 sec_ptr asect;
2230 asymbol **symbols;
7ed4093a
SC		 2231{
2232 unsigned int count;
2233 bfd_size_type reloc_size;
2234 PTR relocs;
2235 arelent *reloc_cache;
2236 size_t each_size;
0ee75d02
ILT		 2237 unsigned int counter = 0;
2238 arelent *cache_ptr;
7ed4093a 2239
5c8444f8
ILT		 2240 if (asect->relocation)
2241 return true;
7ed4093a 2242
5c8444f8
ILT		 2243 if (asect->flags & SEC_CONSTRUCTOR)
2244 return true;
7ed4093a 2245
0ee75d02 2246 if (asect == obj_datasec (abfd))
7ed4093a 2247 reloc_size = exec_hdr(abfd)->a_drsize;
0ee75d02 2248 else if (asect == obj_textsec (abfd))
7ed4093a 2249 reloc_size = exec_hdr(abfd)->a_trsize;
f42fe159
ILT		 2250 else if (asect == obj_bsssec (abfd))
2251 reloc_size = 0;
0ee75d02
ILT		 2252 else
2253 {
68241b2b 2254 bfd_set_error (bfd_error_invalid_operation);
0ee75d02
ILT		 2255 return false;
2256 }
2257
5c8444f8
ILT		 2258 if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0)
2259 return false;
2260
7ed4093a
SC		 2261 each_size = obj_reloc_entry_size (abfd);
2262
2263 count = reloc_size / each_size;
2264
fa77c704 2265 reloc_cache = (arelent *) malloc ((size_t) (count * sizeof (arelent)));
5c8444f8 2266 if (reloc_cache == NULL && count != 0)
0ee75d02 2267 {
68241b2b 2268 bfd_set_error (bfd_error_no_memory);
0ee75d02
ILT		 2269 return false;
2270 }
fa77c704 2271 memset (reloc_cache, 0, count * sizeof (arelent));
7ed4093a 2272
3fe22b98 2273 relocs = malloc ((size_t) reloc_size);
5c8444f8 2274 if (relocs == NULL && reloc_size != 0)
0ee75d02 2275 {
5c8444f8
ILT		 2276 free (reloc_cache);
2277 bfd_set_error (bfd_error_no_memory);
2278 return false;
0ee75d02 2279 }
7ed4093a 2280
0ee75d02
ILT		 2281 if (bfd_read (relocs, 1, reloc_size, abfd) != reloc_size)
2282 {
5c8444f8
ILT		 2283 free (relocs);
2284 free (reloc_cache);
0ee75d02
ILT		 2285 return false;
2286 }
7ed4093a 2287
0ee75d02
ILT		 2288 cache_ptr = reloc_cache;
2289 if (each_size == RELOC_EXT_SIZE)
2290 {
2291 register struct reloc_ext_external *rptr =
2292 (struct reloc_ext_external *) relocs;
7ed4093a 2293
0ee75d02 2294 for (; counter < count; counter++, rptr++, cache_ptr++)
2f675427
ILT		 2295 NAME(aout,swap_ext_reloc_in) (abfd, rptr, cache_ptr, symbols,
2296 bfd_get_symcount (abfd));
7ed4093a 2297 }
0ee75d02
ILT		 2298 else
2299 {
5c8444f8
ILT		 2300 register struct reloc_std_external *rptr =
2301 (struct reloc_std_external *) relocs;
7ed4093a 2302
0ee75d02 2303 for (; counter < count; counter++, rptr++, cache_ptr++)
2f675427
ILT		 2304 MY_swap_std_reloc_in (abfd, rptr, cache_ptr, symbols,
2305 bfd_get_symcount (abfd));
7ed4093a
SC		 2306 }
2307
5c8444f8
ILT		 2308 free (relocs);
2309
7ed4093a 2310 asect->relocation = reloc_cache;
0ee75d02 2311 asect->reloc_count = cache_ptr - reloc_cache;
5c8444f8 2312
7ed4093a
SC		 2313 return true;
2314}
2315
7ed4093a
SC		 2316/* Write out a relocation section into an object file. */
2317
2318boolean
8eb5d4be
JK		 2319NAME(aout,squirt_out_relocs) (abfd, section)
2320 bfd *abfd;
2321 asection *section;
7ed4093a
SC		 2322{
2323 arelent **generic;
2324 unsigned char *native, *natptr;
2325 size_t each_size;
2326
2327 unsigned int count = section->reloc_count;
2328 size_t natsize;
2329
2330 if (count == 0) return true;
2331
2332 each_size = obj_reloc_entry_size (abfd);
2333 natsize = each_size * count;
2334 native = (unsigned char *) bfd_zalloc (abfd, natsize);
2335 if (!native) {
68241b2b 2336 bfd_set_error (bfd_error_no_memory);
7ed4093a
SC		 2337 return false;
2338 }
2339
2340 generic = section->orelocation;
2341
c188b0be 2342 if (each_size == RELOC_EXT_SIZE)
7ed4093a
SC		 2343 {
2344 for (natptr = native;
2345 count != 0;
2346 --count, natptr += each_size, ++generic)
2347 NAME(aout,swap_ext_reloc_out) (abfd, *generic, (struct reloc_ext_external *)natptr);
2348 }
c188b0be 2349 else
7ed4093a
SC		 2350 {
2351 for (natptr = native;
2352 count != 0;
2353 --count, natptr += each_size, ++generic)
f42fe159 2354 MY_swap_std_reloc_out(abfd, *generic, (struct reloc_std_external *)natptr);
7ed4093a
SC		 2355 }
2356
2357 if ( bfd_write ((PTR) native, 1, natsize, abfd) != natsize) {
2358 bfd_release(abfd, native);
2359 return false;
2360 }
2361 bfd_release (abfd, native);
2362
2363 return true;
2364}
2365
2366/* This is stupid. This function should be a boolean predicate */
326e32d7 2367long
8eb5d4be
JK		 2368NAME(aout,canonicalize_reloc) (abfd, section, relptr, symbols)
2369 bfd *abfd;
2370 sec_ptr section;
2371 arelent **relptr;
2372 asymbol **symbols;
7ed4093a
SC		 2373{
2374 arelent *tblptr = section->relocation;
2375 unsigned int count;
2376
4f019d04
ILT		 2377 if (section == obj_bsssec (abfd))
2378 {
2379 *relptr = NULL;
2380 return 0;
2381 }
2382
7ed4093a 2383 if (!(tblptr || NAME(aout,slurp_reloc_table)(abfd, section, symbols)))
326e32d7 2384 return -1;
7ed4093a
SC		 2385
2386 if (section->flags & SEC_CONSTRUCTOR) {
2387 arelent_chain *chain = section->constructor_chain;
2388 for (count = 0; count < section->reloc_count; count ++) {
2389 *relptr ++ = &chain->relent;
2390 chain = chain->next;
2391 }
2392 }
2393 else {
2394 tblptr = section->relocation;
7ed4093a 2395
c188b0be 2396 for (count = 0; count++ < section->reloc_count;)
7ed4093a
SC		 2397 {
2398 *relptr++ = tblptr++;
2399 }
2400 }
2401 *relptr = 0;
2402
2403 return section->reloc_count;
2404}
2405
326e32d7 2406long
8eb5d4be
JK		 2407NAME(aout,get_reloc_upper_bound) (abfd, asect)
2408 bfd *abfd;
2409 sec_ptr asect;
7ed4093a
SC		 2410{
2411 if (bfd_get_format (abfd) != bfd_object) {
68241b2b 2412 bfd_set_error (bfd_error_invalid_operation);
326e32d7 2413 return -1;
7ed4093a
SC		 2414 }
2415 if (asect->flags & SEC_CONSTRUCTOR) {
2416 return (sizeof (arelent *) * (asect->reloc_count+1));
2417 }
2418
7ed4093a 2419 if (asect == obj_datasec (abfd))
fa77c704
ILT		 2420 return (sizeof (arelent *)
2421 * ((exec_hdr(abfd)->a_drsize / obj_reloc_entry_size (abfd))
2422 + 1));
7ed4093a
SC		 2423
2424 if (asect == obj_textsec (abfd))
fa77c704
ILT		 2425 return (sizeof (arelent *)
2426 * ((exec_hdr(abfd)->a_trsize / obj_reloc_entry_size (abfd))
2427 + 1));
7ed4093a 2428
4f019d04
ILT		 2429 if (asect == obj_bsssec (abfd))
2430 return sizeof (arelent *);
2431
f42fe159
ILT		 2432 if (asect == obj_bsssec (abfd))
2433 return 0;
2434
68241b2b 2435 bfd_set_error (bfd_error_invalid_operation);
326e32d7 2436 return -1;
7ed4093a
SC		 2437}
2438
2439\f
326e32d7 2440long
8eb5d4be
JK		 2441NAME(aout,get_symtab_upper_bound) (abfd)
2442 bfd *abfd;
7ed4093a 2443{
326e32d7
ILT		 2444 if (!NAME(aout,slurp_symbol_table)(abfd))
2445 return -1;
7ed4093a
SC		 2446
2447 return (bfd_get_symcount (abfd)+1) * (sizeof (aout_symbol_type *));
2448}
728472f1
ILT		 2449
2450/*ARGSUSED*/
7ed4093a 2451 alent *
8eb5d4be
JK		 2452NAME(aout,get_lineno) (ignore_abfd, ignore_symbol)
2453 bfd *ignore_abfd;
2454 asymbol *ignore_symbol;
7ed4093a
SC		 2455{
2456return (alent *)NULL;
2457}
2458
728472f1 2459/*ARGSUSED*/
c188b0be 2460void
8eb5d4be
JK		 2461NAME(aout,get_symbol_info) (ignore_abfd, symbol, ret)
2462 bfd *ignore_abfd;
2463 asymbol *symbol;
2464 symbol_info *ret;
34dd8ba3
JG		 2465{
2466 bfd_symbol_info (symbol, ret);
2467
2468 if (ret->type == '?')
2469 {
2470 int type_code = aout_symbol(symbol)->type & 0xff;
2471 CONST char *stab_name = aout_stab_name(type_code);
2472 static char buf[10];
2473
2474 if (stab_name == NULL)
2475 {
2476 sprintf(buf, "(%d)", type_code);
2477 stab_name = buf;
2478 }
2479 ret->type = '-';
2480 ret->stab_other = (unsigned)(aout_symbol(symbol)->other & 0xff);
2481 ret->stab_desc = (unsigned)(aout_symbol(symbol)->desc & 0xffff);
2482 ret->stab_name = stab_name;
2483 }
2484}
7ed4093a 2485
728472f1 2486/*ARGSUSED*/
c188b0be 2487void
8eb5d4be
JK		 2488NAME(aout,print_symbol) (ignore_abfd, afile, symbol, how)
2489 bfd *ignore_abfd;
2490 PTR afile;
2491 asymbol *symbol;
2492 bfd_print_symbol_type how;
7ed4093a
SC		 2493{
2494 FILE *file = (FILE *)afile;
2495
2496 switch (how) {
9e2dad8e 2497 case bfd_print_symbol_name:
fb3be09b
JG		 2498 if (symbol->name)
2499 fprintf(file,"%s", symbol->name);
7ed4093a 2500 break;
9e2dad8e 2501 case bfd_print_symbol_more:
7ed4093a
SC		 2502 fprintf(file,"%4x %2x %2x",(unsigned)(aout_symbol(symbol)->desc & 0xffff),
2503 (unsigned)(aout_symbol(symbol)->other & 0xff),
2504 (unsigned)(aout_symbol(symbol)->type));
2505 break;
9e2dad8e 2506 case bfd_print_symbol_all:
7ed4093a 2507 {
6db82ea7
SC		 2508 CONST char *section_name = symbol->section->name;
2509
7ed4093a
SC		 2510
2511 bfd_print_symbol_vandf((PTR)file,symbol);
2512
fb3be09b 2513 fprintf(file," %-5s %04x %02x %02x",
7ed4093a
SC		 2514 section_name,
2515 (unsigned)(aout_symbol(symbol)->desc & 0xffff),
2516 (unsigned)(aout_symbol(symbol)->other & 0xff),
9e2dad8e 2517 (unsigned)(aout_symbol(symbol)->type & 0xff));
fb3be09b
JG		 2518 if (symbol->name)
2519 fprintf(file," %s", symbol->name);
7ed4093a
SC		 2520 }
2521 break;
2522 }
2523}
2524
c3246d9b
ILT		 2525/* If we don't have to allocate more than 1MB to hold the generic
2526 symbols, we use the generic minisymbol methord: it's faster, since
2527 it only translates the symbols once, not multiple times. */
2528#define MINISYM_THRESHOLD (1000000 / sizeof (asymbol))
2529
2530/* Read minisymbols. For minisymbols, we use the unmodified a.out
2531 symbols. The minisymbol_to_symbol function translates these into
2532 BFD asymbol structures. */
2533
2534long
2535NAME(aout,read_minisymbols) (abfd, dynamic, minisymsp, sizep)
2536 bfd *abfd;
2537 boolean dynamic;
2538 PTR *minisymsp;
2539 unsigned int *sizep;
2540{
2541 if (dynamic)
2542 {
2543 /* We could handle the dynamic symbols here as well, but it's
2544 easier to hand them off. */
2545 return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep);
2546 }
2547
2548 if (! aout_get_external_symbols (abfd))
2549 return -1;
2550
2551 if (obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD)
2552 return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep);
2553
2554 *minisymsp = (PTR) obj_aout_external_syms (abfd);
2555
2556 /* By passing the external symbols back from this routine, we are
2557 giving up control over the memory block. Clear
2558 obj_aout_external_syms, so that we do not try to free it
2559 ourselves. */
2560 obj_aout_external_syms (abfd) = NULL;
2561
2562 *sizep = EXTERNAL_NLIST_SIZE;
2563 return obj_aout_external_sym_count (abfd);
2564}
2565
2566/* Convert a minisymbol to a BFD asymbol. A minisymbol is just an
2567 unmodified a.out symbol. The SYM argument is a structure returned
2568 by bfd_make_empty_symbol, which we fill in here. */
2569
2570asymbol *
2571NAME(aout,minisymbol_to_symbol) (abfd, dynamic, minisym, sym)
2572 bfd *abfd;
2573 boolean dynamic;
2574 const PTR minisym;
2575 asymbol *sym;
2576{
2577 if (dynamic
2578 || obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD)
2579 return _bfd_generic_minisymbol_to_symbol (abfd, dynamic, minisym, sym);
2580
2581 memset (sym, 0, sizeof (aout_symbol_type));
2582
2583 /* We call translate_symbol_table to translate a single symbol. */
2584 if (! (NAME(aout,translate_symbol_table)
2585 (abfd,
2586 (aout_symbol_type *) sym,
2587 (struct external_nlist *) minisym,
2588 (bfd_size_type) 1,
2589 obj_aout_external_strings (abfd),
2590 obj_aout_external_string_size (abfd),
2591 false)))
2592 return NULL;
2593
2594 return sym;
2595}
2596
c188b0be 2597/*
6724ff46 2598 provided a BFD, a section and an offset into the section, calculate
7ed4093a
SC		 2599 and return the name of the source file and the line nearest to the
2600 wanted location.
2601*/
c188b0be 2602
7ed4093a 2603boolean
8eb5d4be
JK		 2604NAME(aout,find_nearest_line)
2605 (abfd, section, symbols, offset, filename_ptr, functionname_ptr, line_ptr)
2606 bfd *abfd;
2607 asection *section;
2608 asymbol **symbols;
2609 bfd_vma offset;
2610 CONST char **filename_ptr;
2611 CONST char **functionname_ptr;
2612 unsigned int *line_ptr;
7ed4093a
SC		 2613{
2614 /* Run down the file looking for the filename, function and linenumber */
2615 asymbol **p;
6db82ea7
SC		 2616 CONST char *directory_name = NULL;
2617 CONST char *main_file_name = NULL;
2618 CONST char *current_file_name = NULL;
2619 CONST char *line_file_name = NULL; /* Value of current_file_name at line number. */
ae115e51 2620 bfd_vma low_line_vma = 0;
7ed4093a
SC		 2621 bfd_vma low_func_vma = 0;
2622 asymbol *func = 0;
f1c6dd5d
ILT		 2623 size_t filelen, funclen;
2624 char *buf;
2625
7ed4093a
SC		 2626 *filename_ptr = abfd->filename;
2627 *functionname_ptr = 0;
2628 *line_ptr = 0;
2629 if (symbols != (asymbol **)NULL) {
2630 for (p = symbols; *p; p++) {
2631 aout_symbol_type *q = (aout_symbol_type *)(*p);
98d43107 2632 next:
7ed4093a
SC		 2633 switch (q->type){
2634 case N_SO:
3f7607af 2635 main_file_name = current_file_name = q->symbol.name;
98d43107
JG		 2636 /* Look ahead to next symbol to check if that too is an N_SO. */
2637 p++;
2638 if (*p == NULL)
2639 break;
2640 q = (aout_symbol_type *)(*p);
6db82ea7 2641 if (q->type != (int)N_SO)
98d43107
JG		 2642 goto next;
2643
2644 /* Found a second N_SO First is directory; second is filename. */
3f7607af
PB		 2645 directory_name = current_file_name;
2646 main_file_name = current_file_name = q->symbol.name;
2647 if (obj_textsec(abfd) != section)
2648 goto done;
2649 break;
2650 case N_SOL:
2651 current_file_name = q->symbol.name;
7ed4093a 2652 break;
3f7607af 2653
7ed4093a
SC		 2654 case N_SLINE:
2655
2656 case N_DSLINE:
2657 case N_BSLINE:
ae115e51
ILT		 2658 /* We'll keep this if it resolves nearer than the one we have
2659 already. */
2660 if (q->symbol.value >= low_line_vma
2661 && q->symbol.value <= offset)
2662 {
2663 *line_ptr = q->desc;
2664 low_line_vma = q->symbol.value;
2665 line_file_name = current_file_name;
2666 }
7ed4093a
SC		 2667 break;
2668 case N_FUN:
2669 {
2670 /* We'll keep this if it is nearer than the one we have already */
2671 if (q->symbol.value >= low_func_vma &&
2672 q->symbol.value <= offset) {
2673 low_func_vma = q->symbol.value;
2674 func = (asymbol *)q;
2675 }
ae115e51 2676 else if (q->symbol.value > offset)
3f7607af 2677 goto done;
7ed4093a
SC		 2678 }
2679 break;
2680 }
2681 }
2682 }
3f7607af
PB		 2683
2684 done:
f1c6dd5d 2685 if (*line_ptr != 0)
3f7607af 2686 main_file_name = line_file_name;
f1c6dd5d
ILT		 2687
2688 if (main_file_name == NULL
2689 || main_file_name[0] == '/'
2690 || directory_name == NULL)
2691 filelen = 0;
2692 else
2693 filelen = strlen (directory_name) + strlen (main_file_name);
2694 if (func == NULL)
2695 funclen = 0;
2696 else
2697 funclen = strlen (bfd_asymbol_name (func));
2698
2699 if (adata (abfd).line_buf != NULL)
2700 free (adata (abfd).line_buf);
2701 if (filelen + funclen == 0)
2702 adata (abfd).line_buf = buf = NULL;
2703 else
2704 {
2705 adata (abfd).line_buf = buf = (char *) malloc (filelen + funclen + 2);
2706 if (adata (abfd).line_buf == NULL)
2707 {
2708 bfd_set_error (bfd_error_no_memory);
2709 return false;
2710 }
2711 }
2712
2713 if (main_file_name != NULL)
2714 {
3f7607af 2715 if (main_file_name[0] == '/' || directory_name == NULL)
f1c6dd5d
ILT		 2716 *filename_ptr = main_file_name;
2717 else
2718 {
2719 sprintf (buf, "%s%s", directory_name, main_file_name);
2720 *filename_ptr = buf;
2721 buf += filelen + 1;
2722 }
2723 }
2724
ae115e51
ILT		 2725 if (func)
2726 {
f1c6dd5d 2727 const char *function = func->name;
ae115e51
ILT		 2728 char *p;
2729
2730 /* The caller expects a symbol name. We actually have a
2731 function name, without the leading underscore. Put the
2732 underscore back in, so that the caller gets a symbol name. */
2733 if (bfd_get_symbol_leading_char (abfd) == '\0')
f1c6dd5d 2734 strcpy (buf, function);
ae115e51
ILT		 2735 else
2736 {
f1c6dd5d
ILT		 2737 buf[0] = bfd_get_symbol_leading_char (abfd);
2738 strcpy (buf + 1, function);
ae115e51 2739 }
ae115e51 2740 /* Have to remove : stuff */
f1c6dd5d 2741 p = strchr (buf, ':');
ae115e51
ILT		 2742 if (p != NULL)
2743 *p = '\0';
f1c6dd5d 2744 *functionname_ptr = buf;
ae115e51 2745 }
f1c6dd5d 2746
7ed4093a 2747 return true;
7ed4093a
SC		 2748}
2749
728472f1 2750/*ARGSUSED*/
c188b0be 2751int
8eb5d4be
JK		 2752NAME(aout,sizeof_headers) (abfd, execable)
2753 bfd *abfd;
2754 boolean execable;
7ed4093a 2755{
6db82ea7 2756 return adata(abfd).exec_bytes_size;
7ed4093a 2757}
5c8444f8
ILT		 2758
2759/* Free all information we have cached for this BFD. We can always
2760 read it again later if we need it. */
2761
2762boolean
2763NAME(aout,bfd_free_cached_info) (abfd)
2764 bfd *abfd;
2765{
2766 asection *o;
2767
c4dd531f
ILT		 2768 if (bfd_get_format (abfd) != bfd_object)
2769 return true;
2770
4852416e
DHW		 2771#define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; }
2772 BFCI_FREE (obj_aout_symbols (abfd));
4fe6d901
KR		 2773 obj_aout_external_syms (abfd) = 0;
2774 bfd_free_window (&obj_aout_sym_window (abfd));
2775 bfd_free_window (&obj_aout_string_window (abfd));
2776 obj_aout_external_strings (abfd) = 0;
5c8444f8 2777 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
4852416e
DHW		 2778 BFCI_FREE (o->relocation);
2779#undef BFCI_FREE
5c8444f8
ILT		 2780
2781 return true;
2782}
4c3721d5
ILT		 2783\f
2784/* a.out link code. */
2785
4c3721d5
ILT		 2786static boolean aout_link_add_object_symbols
2787 PARAMS ((bfd *, struct bfd_link_info *));
2788static boolean aout_link_check_archive_element
2789 PARAMS ((bfd *, struct bfd_link_info *, boolean *));
4c3721d5
ILT		 2790static boolean aout_link_free_symbols PARAMS ((bfd *));
2791static boolean aout_link_check_ar_symbols
2792 PARAMS ((bfd *, struct bfd_link_info *, boolean *pneeded));
2793static boolean aout_link_add_symbols
2794 PARAMS ((bfd *, struct bfd_link_info *));
2795
2796/* Routine to create an entry in an a.out link hash table. */
2797
e85e8bfe
ILT		 2798struct bfd_hash_entry *
2799NAME(aout,link_hash_newfunc) (entry, table, string)
4c3721d5
ILT		 2800 struct bfd_hash_entry *entry;
2801 struct bfd_hash_table *table;
2802 const char *string;
2803{
2804 struct aout_link_hash_entry *ret = (struct aout_link_hash_entry *) entry;
2805
2806 /* Allocate the structure if it has not already been allocated by a
2807 subclass. */
2808 if (ret == (struct aout_link_hash_entry *) NULL)
2809 ret = ((struct aout_link_hash_entry *)
2810 bfd_hash_allocate (table, sizeof (struct aout_link_hash_entry)));
9783e04a
DM		 2811 if (ret == (struct aout_link_hash_entry *) NULL)
2812 {
68241b2b 2813 bfd_set_error (bfd_error_no_memory);
9783e04a
DM		 2814 return (struct bfd_hash_entry *) ret;
2815 }
4c3721d5
ILT		 2816
2817 /* Call the allocation method of the superclass. */
2818 ret = ((struct aout_link_hash_entry *)
2819 _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2820 table, string));
9783e04a 2821 if (ret)
35fee729
ILT		 2822 {
2823 /* Set local fields. */
2824 ret->written = false;
2825 ret->indx = -1;
2826 }
4c3721d5
ILT		 2827
2828 return (struct bfd_hash_entry *) ret;
2829}
2830
e85e8bfe
ILT		 2831/* Initialize an a.out link hash table. */
2832
2833boolean
2834NAME(aout,link_hash_table_init) (table, abfd, newfunc)
2835 struct aout_link_hash_table *table;
2836 bfd *abfd;
2837 struct bfd_hash_entry *(*newfunc) PARAMS ((struct bfd_hash_entry *,
2838 struct bfd_hash_table *,
2839 const char *));
2840{
2841 return _bfd_link_hash_table_init (&table->root, abfd, newfunc);
2842}
2843
4c3721d5
ILT		 2844/* Create an a.out link hash table. */
2845
2846struct bfd_link_hash_table *
2847NAME(aout,link_hash_table_create) (abfd)
2848 bfd *abfd;
2849{
2850 struct aout_link_hash_table *ret;
2851
2852 ret = ((struct aout_link_hash_table *)
c3246d9b
ILT		 2853 bfd_alloc (abfd, sizeof (struct aout_link_hash_table)));
2854 if (ret == NULL)
2855 {
2856 bfd_set_error (bfd_error_no_memory);
2857 return (struct bfd_link_hash_table *) NULL;
2858 }
e85e8bfe
ILT		 2859 if (! NAME(aout,link_hash_table_init) (ret, abfd,
2860 NAME(aout,link_hash_newfunc)))
4c3721d5
ILT		 2861 {
2862 free (ret);
2863 return (struct bfd_link_hash_table *) NULL;
2864 }
2865 return &ret->root;
2866}
2867
4c3721d5
ILT		 2868/* Given an a.out BFD, add symbols to the global hash table as
2869 appropriate. */
2870
2871boolean
2872NAME(aout,link_add_symbols) (abfd, info)
2873 bfd *abfd;
2874 struct bfd_link_info *info;
2875{
2876 switch (bfd_get_format (abfd))
2877 {
2878 case bfd_object:
2879 return aout_link_add_object_symbols (abfd, info);
2880 case bfd_archive:
2881 return _bfd_generic_link_add_archive_symbols
2882 (abfd, info, aout_link_check_archive_element);
2883 default:
68241b2b 2884 bfd_set_error (bfd_error_wrong_format);
4c3721d5
ILT		 2885 return false;
2886 }
2887}
2888
2889/* Add symbols from an a.out object file. */
2890
2891static boolean
2892aout_link_add_object_symbols (abfd, info)
2893 bfd *abfd;
2894 struct bfd_link_info *info;
2895{
5c8444f8 2896 if (! aout_get_external_symbols (abfd))
4c3721d5
ILT		 2897 return false;
2898 if (! aout_link_add_symbols (abfd, info))
2899 return false;
2900 if (! info->keep_memory)
2901 {
2902 if (! aout_link_free_symbols (abfd))
2903 return false;
2904 }
2905 return true;
2906}
2907
2908/* Check a single archive element to see if we need to include it in
2909 the link. *PNEEDED is set according to whether this element is
2910 needed in the link or not. This is called from
2911 _bfd_generic_link_add_archive_symbols. */
2912
2913static boolean
2914aout_link_check_archive_element (abfd, info, pneeded)
2915 bfd *abfd;
2916 struct bfd_link_info *info;
2917 boolean *pneeded;
2918{
5c8444f8 2919 if (! aout_get_external_symbols (abfd))
4c3721d5
ILT		 2920 return false;
2921
2922 if (! aout_link_check_ar_symbols (abfd, info, pneeded))
2923 return false;
2924
2925 if (*pneeded)
2926 {
2927 if (! aout_link_add_symbols (abfd, info))
2928 return false;
2929 }
2930
1afd2380 2931 if (! info->keep_memory || ! *pneeded)
4c3721d5
ILT		 2932 {
2933 if (! aout_link_free_symbols (abfd))
2934 return false;
2935 }
2936
2937 return true;
2938}
2939
4c3721d5
ILT		 2940/* Free up the internal symbols read from an a.out file. */
2941
2942static boolean
2943aout_link_free_symbols (abfd)
2944 bfd *abfd;
2945{
2946 if (obj_aout_external_syms (abfd) != (struct external_nlist *) NULL)
2947 {
4fe6d901 2948 bfd_free_window (&obj_aout_sym_window (abfd));
4c3721d5
ILT		 2949 obj_aout_external_syms (abfd) = (struct external_nlist *) NULL;
2950 }
2951 if (obj_aout_external_strings (abfd) != (char *) NULL)
2952 {
4fe6d901 2953 bfd_free_window (&obj_aout_string_window (abfd));
4c3721d5
ILT		 2954 obj_aout_external_strings (abfd) = (char *) NULL;
2955 }
2956 return true;
2957}
2958
2959/* Look through the internal symbols to see if this object file should
2960 be included in the link. We should include this object file if it
2961 defines any symbols which are currently undefined. If this object
2962 file defines a common symbol, then we may adjust the size of the
2963 known symbol but we do not include the object file in the link
2964 (unless there is some other reason to include it). */
2965
2966static boolean
2967aout_link_check_ar_symbols (abfd, info, pneeded)
2968 bfd *abfd;
2969 struct bfd_link_info *info;
2970 boolean *pneeded;
2971{
2972 register struct external_nlist *p;
2973 struct external_nlist *pend;
2974 char *strings;
2975
2976 *pneeded = false;
2977
2978 /* Look through all the symbols. */
2979 p = obj_aout_external_syms (abfd);
2980 pend = p + obj_aout_external_sym_count (abfd);
2981 strings = obj_aout_external_strings (abfd);
2982 for (; p < pend; p++)
2983 {
2984 int type = bfd_h_get_8 (abfd, p->e_type);
2985 const char *name;
2986 struct bfd_link_hash_entry *h;
2987
4298e311
ILT		 2988 /* Ignore symbols that are not externally visible. This is an
2989 optimization only, as we check the type more thoroughly
2990 below. */
4587b578
ILT		 2991 if (((type & N_EXT) == 0
2992 || (type & N_STAB) != 0
2993 || type == N_FN)
4298e311
ILT		 2994 && type != N_WEAKA
2995 && type != N_WEAKT
2996 && type != N_WEAKD
2997 && type != N_WEAKB)
9b39ed6b
ILT		 2998 {
2999 if (type == N_WARNING
3000 || type == N_INDR)
3001 ++p;
3002 continue;
3003 }
4c3721d5
ILT		 3004
3005 name = strings + GET_WORD (abfd, p->e_strx);
3006 h = bfd_link_hash_lookup (info->hash, name, false, false, true);
3007
3008 /* We are only interested in symbols that are currently
3009 undefined or common. */
3010 if (h == (struct bfd_link_hash_entry *) NULL
3011 || (h->type != bfd_link_hash_undefined
3012 && h->type != bfd_link_hash_common))
9b39ed6b
ILT		 3013 {
3014 if (type == (N_INDR | N_EXT))
3015 ++p;
3016 continue;
3017 }
4c3721d5 3018
9b39ed6b
ILT		 3019 if (type == (N_TEXT | N_EXT)
3020 || type == (N_DATA | N_EXT)
3021 || type == (N_BSS | N_EXT)
3022 || type == (N_ABS | N_EXT)
3023 || type == (N_INDR | N_EXT))
4c3721d5
ILT		 3024 {
3025 /* This object file defines this symbol. We must link it
3026 in. This is true regardless of whether the current
3027 definition of the symbol is undefined or common. If the
3028 current definition is common, we have a case in which we
3029 have already seen an object file including
3030 int a;
3031 and this object file from the archive includes
3032 int a = 5;
f88c9008
ILT		 3033 In such a case we must include this object file.
3034
3035 FIXME: The SunOS 4.1.3 linker will pull in the archive
3036 element if the symbol is defined in the .data section,
3037 but not if it is defined in the .text section. That
3038 seems a bit crazy to me, and I haven't implemented it.
3039 However, it might be correct. */
4c3721d5
ILT		 3040 if (! (*info->callbacks->add_archive_element) (info, abfd, name))
3041 return false;
3042 *pneeded = true;
3043 return true;
3044 }
3045
9b39ed6b 3046 if (type == (N_UNDF | N_EXT))
4c3721d5
ILT		 3047 {
3048 bfd_vma value;
3049
3050 value = GET_WORD (abfd, p->e_value);
3051 if (value != 0)
3052 {
3053 /* This symbol is common in the object from the archive
3054 file. */
3055 if (h->type == bfd_link_hash_undefined)
3056 {
3057 bfd *symbfd;
e1f99f60 3058 unsigned int power;
4c3721d5
ILT		 3059
3060 symbfd = h->u.undef.abfd;
3061 if (symbfd == (bfd *) NULL)
3062 {
3063 /* This symbol was created as undefined from
3064 outside BFD. We assume that we should link
3065 in the object file. This is done for the -u
3066 option in the linker. */
3067 if (! (*info->callbacks->add_archive_element) (info,
3068 abfd,
3069 name))
3070 return false;
3071 *pneeded = true;
3072 return true;
3073 }
3074 /* Turn the current link symbol into a common
3075 symbol. It is already on the undefs list. */
3076 h->type = bfd_link_hash_common;
773033d2
ILT		 3077 h->u.c.p = ((struct bfd_link_hash_common_entry *)
3078 bfd_hash_allocate (&info->hash->table,
3079 sizeof (struct bfd_link_hash_common_entry)));
3080 if (h->u.c.p == NULL)
3081 return false;
3082
4c3721d5 3083 h->u.c.size = value;
e1f99f60
ILT		 3084
3085 /* FIXME: This isn't quite right. The maximum
3086 alignment of a common symbol should be set by the
3087 architecture of the output file, not of the input
3088 file. */
3089 power = bfd_log2 (value);
3090 if (power > bfd_get_arch_info (abfd)->section_align_power)
3091 power = bfd_get_arch_info (abfd)->section_align_power;
773033d2 3092 h->u.c.p->alignment_power = power;
e1f99f60 3093
773033d2
ILT		 3094 h->u.c.p->section = bfd_make_section_old_way (symbfd,
3095 "COMMON");
4c3721d5
ILT		 3096 }
3097 else
3098 {
3099 /* Adjust the size of the common symbol if
3100 necessary. */
3101 if (value > h->u.c.size)
3102 h->u.c.size = value;
3103 }
3104 }
3105 }
4298e311
ILT		 3106
3107 if (type == N_WEAKA
3108 || type == N_WEAKT
3109 || type == N_WEAKD
3110 || type == N_WEAKB)
3111 {
3112 /* This symbol is weak but defined. We must pull it in if
3113 the current link symbol is undefined, but we don't want
3114 it if the current link symbol is common. */
3115 if (h->type == bfd_link_hash_undefined)
3116 {
3117 if (! (*info->callbacks->add_archive_element) (info, abfd, name))
3118 return false;
3119 *pneeded = true;
3120 return true;
3121 }
3122 }
4c3721d5
ILT		 3123 }
3124
3125 /* We do not need this object file. */
3126 return true;
3127}
3128
3129/* Add all symbols from an object file to the hash table. */
3130
3131static boolean
3132aout_link_add_symbols (abfd, info)
3133 bfd *abfd;
3134 struct bfd_link_info *info;
3135{
e85e8bfe
ILT		 3136 boolean (*add_one_symbol) PARAMS ((struct bfd_link_info *, bfd *,
3137 const char *, flagword, asection *,
3138 bfd_vma, const char *, boolean,
3139 boolean,
3140 struct bfd_link_hash_entry **));
396aaeb2 3141 struct external_nlist *syms;
4c3721d5
ILT		 3142 bfd_size_type sym_count;
3143 char *strings;
3144 boolean copy;
3145 struct aout_link_hash_entry **sym_hash;
3146 register struct external_nlist *p;
3147 struct external_nlist *pend;
3148
396aaeb2 3149 syms = obj_aout_external_syms (abfd);
4c3721d5
ILT		 3150 sym_count = obj_aout_external_sym_count (abfd);
3151 strings = obj_aout_external_strings (abfd);
3152 if (info->keep_memory)
3153 copy = false;
3154 else
3155 copy = true;
3156
396aaeb2
ILT		 3157 if ((abfd->flags & DYNAMIC) != 0
3158 && aout_backend_info (abfd)->add_dynamic_symbols != NULL)
3159 {
3160 if (! ((*aout_backend_info (abfd)->add_dynamic_symbols)
3161 (abfd, info, &syms, &sym_count, &strings)))
3162 return false;
3163 }
3164
4c3721d5
ILT		 3165 /* We keep a list of the linker hash table entries that correspond
3166 to particular symbols. We could just look them up in the hash
3167 table, but keeping the list is more efficient. Perhaps this
3168 should be conditional on info->keep_memory. */
3169 sym_hash = ((struct aout_link_hash_entry **)
3170 bfd_alloc (abfd,
3171 ((size_t) sym_count
3172 * sizeof (struct aout_link_hash_entry *))));
e85e8bfe 3173 if (sym_hash == NULL && sym_count != 0)
9783e04a 3174 {
68241b2b 3175 bfd_set_error (bfd_error_no_memory);
9783e04a
DM		 3176 return false;
3177 }
4c3721d5
ILT		 3178 obj_aout_sym_hashes (abfd) = sym_hash;
3179
e85e8bfe
ILT		 3180 add_one_symbol = aout_backend_info (abfd)->add_one_symbol;
3181 if (add_one_symbol == NULL)
3182 add_one_symbol = _bfd_generic_link_add_one_symbol;
3183
396aaeb2 3184 p = syms;
4c3721d5
ILT		 3185 pend = p + sym_count;
3186 for (; p < pend; p++, sym_hash++)
3187 {
3188 int type;
3189 const char *name;
3190 bfd_vma value;
3191 asection *section;
3192 flagword flags;
3193 const char *string;
3194
3195 *sym_hash = NULL;
3196
3197 type = bfd_h_get_8 (abfd, p->e_type);
3198
3199 /* Ignore debugging symbols. */
3200 if ((type & N_STAB) != 0)
3201 continue;
3202
4c3721d5
ILT		 3203 name = strings + GET_WORD (abfd, p->e_strx);
3204 value = GET_WORD (abfd, p->e_value);
3205 flags = BSF_GLOBAL;
3206 string = NULL;
3207 switch (type)
3208 {
3209 default:
3210 abort ();
4298e311
ILT		 3211
3212 case N_UNDF:
3213 case N_ABS:
3214 case N_TEXT:
3215 case N_DATA:
3216 case N_BSS:
3217 case N_FN_SEQ:
3218 case N_COMM:
3219 case N_SETV:
3220 case N_FN:
3221 /* Ignore symbols that are not externally visible. */
3222 continue;
3223 case N_INDR:
3224 /* Ignore local indirect symbol. */
3225 ++p;
3226 ++sym_hash;
3227 continue;
3228
4c3721d5 3229 case N_UNDF | N_EXT:
4298e311
ILT		 3230 if (value == 0)
3231 {
4587b578 3232 section = bfd_und_section_ptr;
4298e311
ILT		 3233 flags = 0;
3234 }
4c3721d5 3235 else
4587b578 3236 section = bfd_com_section_ptr;
4c3721d5
ILT		 3237 break;
3238 case N_ABS | N_EXT:
4587b578 3239 section = bfd_abs_section_ptr;
4c3721d5
ILT		 3240 break;
3241 case N_TEXT | N_EXT:
3242 section = obj_textsec (abfd);
3243 value -= bfd_get_section_vma (abfd, section);
3244 break;
3245 case N_DATA | N_EXT:
2cd086e3
ILT		 3246 case N_SETV | N_EXT:
3247 /* Treat N_SETV symbols as N_DATA symbol; see comment in
3248 translate_from_native_sym_flags. */
4c3721d5
ILT		 3249 section = obj_datasec (abfd);
3250 value -= bfd_get_section_vma (abfd, section);
3251 break;
3252 case N_BSS | N_EXT:
3253 section = obj_bsssec (abfd);
3254 value -= bfd_get_section_vma (abfd, section);
3255 break;
3256 case N_INDR | N_EXT:
3257 /* An indirect symbol. The next symbol is the symbol
3258 which this one really is. */
3259 BFD_ASSERT (p + 1 < pend);
3260 ++p;
3261 string = strings + GET_WORD (abfd, p->e_strx);
4587b578 3262 section = bfd_ind_section_ptr;
4c3721d5
ILT		 3263 flags |= BSF_INDIRECT;
3264 break;
3265 case N_COMM | N_EXT:
4587b578 3266 section = bfd_com_section_ptr;
4c3721d5 3267 break;
964affdc 3268 case N_SETA: case N_SETA | N_EXT:
4587b578 3269 section = bfd_abs_section_ptr;
4c3721d5
ILT		 3270 flags |= BSF_CONSTRUCTOR;
3271 break;
964affdc 3272 case N_SETT: case N_SETT | N_EXT:
4c3721d5
ILT		 3273 section = obj_textsec (abfd);
3274 flags |= BSF_CONSTRUCTOR;
3275 value -= bfd_get_section_vma (abfd, section);
3276 break;
964affdc 3277 case N_SETD: case N_SETD | N_EXT:
4c3721d5
ILT		 3278 section = obj_datasec (abfd);
3279 flags |= BSF_CONSTRUCTOR;
3280 value -= bfd_get_section_vma (abfd, section);
3281 break;
964affdc 3282 case N_SETB: case N_SETB | N_EXT:
4c3721d5
ILT		 3283 section = obj_bsssec (abfd);
3284 flags |= BSF_CONSTRUCTOR;
3285 value -= bfd_get_section_vma (abfd, section);
3286 break;
3287 case N_WARNING:
3288 /* A warning symbol. The next symbol is the one to warn
3289 about. */
3290 BFD_ASSERT (p + 1 < pend);
3291 ++p;
3292 string = name;
3293 name = strings + GET_WORD (abfd, p->e_strx);
4587b578 3294 section = bfd_und_section_ptr;
4c3721d5
ILT		 3295 flags |= BSF_WARNING;
3296 break;
4298e311 3297 case N_WEAKU:
4587b578 3298 section = bfd_und_section_ptr;
4298e311
ILT		 3299 flags = BSF_WEAK;
3300 break;
3301 case N_WEAKA:
4587b578 3302 section = bfd_abs_section_ptr;
4298e311
ILT		 3303 flags = BSF_WEAK;
3304 break;
3305 case N_WEAKT:
3306 section = obj_textsec (abfd);
3307 value -= bfd_get_section_vma (abfd, section);
3308 flags = BSF_WEAK;
3309 break;
3310 case N_WEAKD:
3311 section = obj_datasec (abfd);
3312 value -= bfd_get_section_vma (abfd, section);
3313 flags = BSF_WEAK;
3314 break;
3315 case N_WEAKB:
3316 section = obj_bsssec (abfd);
3317 value -= bfd_get_section_vma (abfd, section);
3318 flags = BSF_WEAK;
3319 break;
4c3721d5
ILT		 3320 }
3321
e85e8bfe 3322 if (! ((*add_one_symbol)
e68de5d5 3323 (info, abfd, name, flags, section, value, string, copy, false,
ec099b4b 3324 (struct bfd_link_hash_entry **) sym_hash)))
4c3721d5 3325 return false;
53155af1 3326
e1f99f60
ILT		 3327 /* Restrict the maximum alignment of a common symbol based on
3328 the architecture, since a.out has no way to represent
3329 alignment requirements of a section in a .o file. FIXME:
3330 This isn't quite right: it should use the architecture of the
3331 output file, not the input files. */
3332 if ((*sym_hash)->root.type == bfd_link_hash_common
773033d2 3333 && ((*sym_hash)->root.u.c.p->alignment_power >
e1f99f60 3334 bfd_get_arch_info (abfd)->section_align_power))
773033d2 3335 (*sym_hash)->root.u.c.p->alignment_power =
e1f99f60
ILT		 3336 bfd_get_arch_info (abfd)->section_align_power;
3337
f4945271
ILT		 3338 /* If this is a set symbol, and we are not building sets, then
3339 it is possible for the hash entry to not have been set. In
3340 such a case, treat the symbol as not globally defined. */
3341 if ((*sym_hash)->root.type == bfd_link_hash_new)
3342 {
3343 BFD_ASSERT ((flags & BSF_CONSTRUCTOR) != 0);
3344 *sym_hash = NULL;
3345 }
3346
53155af1
ILT		 3347 if (type == (N_INDR | N_EXT) || type == N_WARNING)
3348 ++sym_hash;
4c3721d5
ILT		 3349 }
3350
3351 return true;
3352}
3353
3354/* During the final link step we need to pass around a bunch of
3355 information, so we do it in an instance of this structure. */
3356
3357struct aout_final_link_info
3358{
3359 /* General link information. */
3360 struct bfd_link_info *info;
3361 /* Output bfd. */
3362 bfd *output_bfd;
3363 /* Reloc file positions. */
3364 file_ptr treloff, dreloff;
3365 /* File position of symbols. */
3366 file_ptr symoff;
3367 /* String table. */
1afd2380
ILT		 3368 struct bfd_strtab_hash *strtab;
3369 /* A buffer large enough to hold the contents of any section. */
3370 bfd_byte *contents;
3371 /* A buffer large enough to hold the relocs of any section. */
3372 PTR relocs;
3373 /* A buffer large enough to hold the symbol map of any input BFD. */
3374 int *symbol_map;
3375 /* A buffer large enough to hold output symbols of any input BFD. */
3376 struct external_nlist *output_syms;
4c3721d5
ILT		 3377};
3378
3379static boolean aout_link_input_bfd
3380 PARAMS ((struct aout_final_link_info *, bfd *input_bfd));
3381static boolean aout_link_write_symbols
1afd2380 3382 PARAMS ((struct aout_final_link_info *, bfd *input_bfd));
4c3721d5
ILT		 3383static boolean aout_link_write_other_symbol
3384 PARAMS ((struct aout_link_hash_entry *, PTR));
3385static boolean aout_link_input_section
3386 PARAMS ((struct aout_final_link_info *, bfd *input_bfd,
3387 asection *input_section, file_ptr *reloff_ptr,
1afd2380 3388 bfd_size_type rel_size));
4c3721d5
ILT		 3389static boolean aout_link_input_section_std
3390 PARAMS ((struct aout_final_link_info *, bfd *input_bfd,
3391 asection *input_section, struct reloc_std_external *,
1afd2380 3392 bfd_size_type rel_size, bfd_byte *contents));
4c3721d5
ILT		 3393static boolean aout_link_input_section_ext
3394 PARAMS ((struct aout_final_link_info *, bfd *input_bfd,
3395 asection *input_section, struct reloc_ext_external *,
1afd2380 3396 bfd_size_type rel_size, bfd_byte *contents));
4c3721d5
ILT		 3397static INLINE asection *aout_reloc_index_to_section
3398 PARAMS ((bfd *, int));
ec099b4b
ILT		 3399static boolean aout_link_reloc_link_order
3400 PARAMS ((struct aout_final_link_info *, asection *,
3401 struct bfd_link_order *));
4c3721d5
ILT		 3402
3403/* Do the final link step. This is called on the output BFD. The
3404 INFO structure should point to a list of BFDs linked through the
3405 link_next field which can be used to find each BFD which takes part
3406 in the output. Also, each section in ABFD should point to a list
3407 of bfd_link_order structures which list all the input sections for
3408 the output section. */
3409
3410boolean
3411NAME(aout,final_link) (abfd, info, callback)
3412 bfd *abfd;
3413 struct bfd_link_info *info;
3414 void (*callback) PARAMS ((bfd *, file_ptr *, file_ptr *, file_ptr *));
3415{
3416 struct aout_final_link_info aout_info;
3417 register bfd *sub;
1afd2380
ILT		 3418 bfd_size_type trsize, drsize;
3419 size_t max_contents_size;
3420 size_t max_relocs_size;
3421 size_t max_sym_count;
4c3721d5
ILT		 3422 bfd_size_type text_size;
3423 file_ptr text_end;
3424 register struct bfd_link_order *p;
3425 asection *o;
ec099b4b 3426 boolean have_link_order_relocs;
4c3721d5 3427
ae115e51
ILT		 3428 if (info->shared)
3429 abfd->flags |= DYNAMIC;
3430
4c3721d5
ILT		 3431 aout_info.info = info;
3432 aout_info.output_bfd = abfd;
1afd2380
ILT		 3433 aout_info.contents = NULL;
3434 aout_info.relocs = NULL;
3435
3436 /* Figure out the largest section size. Also, if generating
3437 relocateable output, count the relocs. */
3438 trsize = 0;
3439 drsize = 0;
3440 max_contents_size = 0;
3441 max_relocs_size = 0;
3442 max_sym_count = 0;
3443 for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
4c3721d5 3444 {
1afd2380 3445 size_t sz;
4c3721d5 3446
1afd2380 3447 if (info->relocateable)
4c3721d5 3448 {
6c8fa8e6 3449 if (bfd_get_flavour (sub) == bfd_target_aout_flavour)
4c3721d5
ILT		 3450 {
3451 trsize += exec_hdr (sub)->a_trsize;
3452 drsize += exec_hdr (sub)->a_drsize;
3453 }
3454 else
3455 {
3456 /* FIXME: We need to identify the .text and .data sections
3457 and call get_reloc_upper_bound and canonicalize_reloc to
3458 work out the number of relocs needed, and then multiply
3459 by the reloc size. */
3460 abort ();
3461 }
3462 }
1afd2380 3463
204ba9e3
ILT		 3464 if (bfd_get_flavour (sub) == bfd_target_aout_flavour)
3465 {
3466 sz = bfd_section_size (sub, obj_textsec (sub));
3467 if (sz > max_contents_size)
3468 max_contents_size = sz;
3469 sz = bfd_section_size (sub, obj_datasec (sub));
3470 if (sz > max_contents_size)
3471 max_contents_size = sz;
3472
3473 sz = exec_hdr (sub)->a_trsize;
3474 if (sz > max_relocs_size)
3475 max_relocs_size = sz;
3476 sz = exec_hdr (sub)->a_drsize;
3477 if (sz > max_relocs_size)
3478 max_relocs_size = sz;
3479
3480 sz = obj_aout_external_sym_count (sub);
3481 if (sz > max_sym_count)
3482 max_sym_count = sz;
3483 }
1afd2380
ILT		 3484 }
3485
3486 if (info->relocateable)
3487 {
ec6b18c4
ILT		 3488 if (obj_textsec (abfd) != (asection *) NULL)
3489 trsize += (_bfd_count_link_order_relocs (obj_textsec (abfd)
3490 ->link_order_head)
3491 * obj_reloc_entry_size (abfd));
ec6b18c4
ILT		 3492 if (obj_datasec (abfd) != (asection *) NULL)
3493 drsize += (_bfd_count_link_order_relocs (obj_datasec (abfd)
3494 ->link_order_head)
3495 * obj_reloc_entry_size (abfd));
4c3721d5
ILT		 3496 }
3497
1afd2380
ILT		 3498 exec_hdr (abfd)->a_trsize = trsize;
3499 exec_hdr (abfd)->a_drsize = drsize;
3500
964affdc
DM		 3501 exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd);
3502
4c3721d5
ILT		 3503 /* Adjust the section sizes and vmas according to the magic number.
3504 This sets a_text, a_data and a_bss in the exec_hdr and sets the
3505 filepos for each section. */
3506 if (! NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end))
1afd2380 3507 goto error_return;
4c3721d5
ILT		 3508
3509 /* The relocation and symbol file positions differ among a.out
3510 targets. We are passed a callback routine from the backend
3511 specific code to handle this.
3512 FIXME: At this point we do not know how much space the symbol
3513 table will require. This will not work for any (nonstandard)
3514 a.out target that needs to know the symbol table size before it
3515 can compute the relocation file positions. This may or may not
3516 be the case for the hp300hpux target, for example. */
3517 (*callback) (abfd, &aout_info.treloff, &aout_info.dreloff,
3518 &aout_info.symoff);
3519 obj_textsec (abfd)->rel_filepos = aout_info.treloff;
3520 obj_datasec (abfd)->rel_filepos = aout_info.dreloff;
3521 obj_sym_filepos (abfd) = aout_info.symoff;
3522
3523 /* We keep a count of the symbols as we output them. */
3524 obj_aout_external_sym_count (abfd) = 0;
3525
3526 /* We accumulate the string table as we write out the symbols. */
1afd2380
ILT		 3527 aout_info.strtab = _bfd_stringtab_init ();
3528 if (aout_info.strtab == NULL)
3529 goto error_return;
3530
3531 /* Allocate buffers to hold section contents and relocs. */
3532 aout_info.contents = (bfd_byte *) malloc (max_contents_size);
3533 aout_info.relocs = (PTR) malloc (max_relocs_size);
3534 aout_info.symbol_map = (int *) malloc (max_sym_count * sizeof (int *));
3535 aout_info.output_syms = ((struct external_nlist *)
3536 malloc ((max_sym_count + 1)
3537 * sizeof (struct external_nlist)));
3538 if ((aout_info.contents == NULL && max_contents_size != 0)
3539 || (aout_info.relocs == NULL && max_relocs_size != 0)
3540 || (aout_info.symbol_map == NULL && max_sym_count != 0)
3541 || aout_info.output_syms == NULL)
3542 {
3543 bfd_set_error (bfd_error_no_memory);
3544 goto error_return;
3545 }
4c3721d5 3546
34e9ffbc
NH		 3547 /* If we have a symbol named __DYNAMIC, force it out now. This is
3548 required by SunOS. Doing this here rather than in sunos.c is a
3549 hack, but it's easier than exporting everything which would be
3550 needed. */
3551 {
3552 struct aout_link_hash_entry *h;
3553
3554 h = aout_link_hash_lookup (aout_hash_table (info), "__DYNAMIC",
3555 false, false, false);
3556 if (h != NULL)
3557 aout_link_write_other_symbol (h, &aout_info);
3558 }
3559
4c3721d5
ILT		 3560 /* The most time efficient way to do the link would be to read all
3561 the input object files into memory and then sort out the
3562 information into the output file. Unfortunately, that will
3563 probably use too much memory. Another method would be to step
3564 through everything that composes the text section and write it
3565 out, and then everything that composes the data section and write
3566 it out, and then write out the relocs, and then write out the
3567 symbols. Unfortunately, that requires reading stuff from each
3568 input file several times, and we will not be able to keep all the
3569 input files open simultaneously, and reopening them will be slow.
3570
3571 What we do is basically process one input file at a time. We do
3572 everything we need to do with an input file once--copy over the
3573 section contents, handle the relocation information, and write
3574 out the symbols--and then we throw away the information we read
3575 from it. This approach requires a lot of lseeks of the output
3576 file, which is unfortunate but still faster than reopening a lot
3577 of files.
3578
3579 We use the output_has_begun field of the input BFDs to see
3580 whether we have already handled it. */
3581 for (sub = info->input_bfds; sub != (bfd *) NULL; sub = sub->link_next)
3582 sub->output_has_begun = false;
3583
ec099b4b 3584 have_link_order_relocs = false;
4c3721d5
ILT		 3585 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
3586 {
4c3721d5
ILT		 3587 for (p = o->link_order_head;
3588 p != (struct bfd_link_order *) NULL;
3589 p = p->next)
3590 {
e68de5d5
ILT		 3591 if (p->type == bfd_indirect_link_order
3592 && (bfd_get_flavour (p->u.indirect.section->owner)
3593 == bfd_target_aout_flavour))
4c3721d5 3594 {
e68de5d5
ILT		 3595 bfd *input_bfd;
3596
4c3721d5 3597 input_bfd = p->u.indirect.section->owner;
e68de5d5 3598 if (! input_bfd->output_has_begun)
4c3721d5 3599 {
e68de5d5 3600 if (! aout_link_input_bfd (&aout_info, input_bfd))
1afd2380 3601 goto error_return;
e68de5d5 3602 input_bfd->output_has_begun = true;
4c3721d5 3603 }
e68de5d5 3604 }
ec099b4b
ILT		 3605 else if (p->type == bfd_section_reloc_link_order
3606 || p->type == bfd_symbol_reloc_link_order)
3607 {
3608 /* These are handled below. */
3609 have_link_order_relocs = true;
3610 }
e68de5d5
ILT		 3611 else
3612 {
4c3721d5 3613 if (! _bfd_default_link_order (abfd, info, o, p))
1afd2380 3614 goto error_return;
4c3721d5
ILT		 3615 }
3616 }
3617 }
3618
3619 /* Write out any symbols that we have not already written out. */
3620 aout_link_hash_traverse (aout_hash_table (info),
3621 aout_link_write_other_symbol,
3622 (PTR) &aout_info);
3623
ec099b4b
ILT		 3624 /* Now handle any relocs we were asked to create by the linker.
3625 These did not come from any input file. We must do these after
3626 we have written out all the symbols, so that we know the symbol
3627 indices to use. */
3628 if (have_link_order_relocs)
3629 {
3630 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
3631 {
3632 for (p = o->link_order_head;
3633 p != (struct bfd_link_order *) NULL;
3634 p = p->next)
3635 {
3636 if (p->type == bfd_section_reloc_link_order
3637 || p->type == bfd_symbol_reloc_link_order)
3638 {
3639 if (! aout_link_reloc_link_order (&aout_info, o, p))
1afd2380 3640 goto error_return;
ec099b4b
ILT		 3641 }
3642 }
3643 }
3644 }
3645
1afd2380
ILT		 3646 if (aout_info.contents != NULL)
3647 {
3648 free (aout_info.contents);
3649 aout_info.contents = NULL;
3650 }
3651 if (aout_info.relocs != NULL)
3652 {
3653 free (aout_info.relocs);
3654 aout_info.relocs = NULL;
3655 }
3656 if (aout_info.symbol_map != NULL)
3657 {
3658 free (aout_info.symbol_map);
3659 aout_info.symbol_map = NULL;
3660 }
3661 if (aout_info.output_syms != NULL)
3662 {
3663 free (aout_info.output_syms);
3664 aout_info.output_syms = NULL;
3665 }
3666
e85e8bfe
ILT		 3667 /* Finish up any dynamic linking we may be doing. */
3668 if (aout_backend_info (abfd)->finish_dynamic_link != NULL)
3669 {
3670 if (! (*aout_backend_info (abfd)->finish_dynamic_link) (abfd, info))
1afd2380 3671 goto error_return;
e85e8bfe
ILT		 3672 }
3673
4c3721d5
ILT		 3674 /* Update the header information. */
3675 abfd->symcount = obj_aout_external_sym_count (abfd);
3676 exec_hdr (abfd)->a_syms = abfd->symcount * EXTERNAL_NLIST_SIZE;
3677 obj_str_filepos (abfd) = obj_sym_filepos (abfd) + exec_hdr (abfd)->a_syms;
3678 obj_textsec (abfd)->reloc_count =
3679 exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd);
3680 obj_datasec (abfd)->reloc_count =
3681 exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd);
3682
3683 /* Write out the string table. */
3684 if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0)
1afd2380
ILT		 3685 goto error_return;
3686 return emit_stringtab (abfd, aout_info.strtab);
3687
3688 error_return:
3689 if (aout_info.contents != NULL)
3690 free (aout_info.contents);
3691 if (aout_info.relocs != NULL)
3692 free (aout_info.relocs);
3693 if (aout_info.symbol_map != NULL)
3694 free (aout_info.symbol_map);
3695 if (aout_info.output_syms != NULL)
3696 free (aout_info.output_syms);
3697 return false;
4c3721d5
ILT		 3698}
3699
3700/* Link an a.out input BFD into the output file. */
3701
3702static boolean
3703aout_link_input_bfd (finfo, input_bfd)
3704 struct aout_final_link_info *finfo;
3705 bfd *input_bfd;
3706{
3707 bfd_size_type sym_count;
4c3721d5
ILT		 3708
3709 BFD_ASSERT (bfd_get_format (input_bfd) == bfd_object);
3710
e85e8bfe
ILT		 3711 /* If this is a dynamic object, it may need special handling. */
3712 if ((input_bfd->flags & DYNAMIC) != 0
3713 && aout_backend_info (input_bfd)->link_dynamic_object != NULL)
3714 {
3715 return ((*aout_backend_info (input_bfd)->link_dynamic_object)
3716 (finfo->info, input_bfd));
3717 }
3718
4c3721d5
ILT		 3719 /* Get the symbols. We probably have them already, unless
3720 finfo->info->keep_memory is false. */
5c8444f8 3721 if (! aout_get_external_symbols (input_bfd))
4c3721d5
ILT		 3722 return false;
3723
3724 sym_count = obj_aout_external_sym_count (input_bfd);
4c3721d5 3725
1afd2380
ILT		 3726 /* Write out the symbols and get a map of the new indices. The map
3727 is placed into finfo->symbol_map. */
3728 if (! aout_link_write_symbols (finfo, input_bfd))
3729 return false;
4c3721d5 3730
1afd2380
ILT		 3731 /* Relocate and write out the sections. These functions use the
3732 symbol map created by aout_link_write_symbols. */
4c3721d5
ILT		 3733 if (! aout_link_input_section (finfo, input_bfd,
3734 obj_textsec (input_bfd),
3735 &finfo->treloff,
1afd2380 3736 exec_hdr (input_bfd)->a_trsize)
4c3721d5
ILT		 3737 || ! aout_link_input_section (finfo, input_bfd,
3738 obj_datasec (input_bfd),
3739 &finfo->dreloff,
1afd2380
ILT		 3740 exec_hdr (input_bfd)->a_drsize))
3741 return false;
4c3721d5
ILT		 3742
3743 /* If we are not keeping memory, we don't need the symbols any
3744 longer. We still need them if we are keeping memory, because the
3745 strings in the hash table point into them. */
3746 if (! finfo->info->keep_memory)
3747 {
3748 if (! aout_link_free_symbols (input_bfd))
1afd2380 3749 return false;
4c3721d5
ILT		 3750 }
3751
3752 return true;
3753}
3754
3755/* Adjust and write out the symbols for an a.out file. Set the new
3756 symbol indices into a symbol_map. */
3757
3758static boolean
1afd2380 3759aout_link_write_symbols (finfo, input_bfd)
4c3721d5
ILT		 3760 struct aout_final_link_info *finfo;
3761 bfd *input_bfd;
4c3721d5
ILT		 3762{
3763 bfd *output_bfd;
3764 bfd_size_type sym_count;
3765 char *strings;
3766 enum bfd_link_strip strip;
3767 enum bfd_link_discard discard;
4c3721d5 3768 struct external_nlist *outsym;
d17fc4c9 3769 bfd_size_type strtab_index;
4c3721d5
ILT		 3770 register struct external_nlist *sym;
3771 struct external_nlist *sym_end;
3772 struct aout_link_hash_entry **sym_hash;
1afd2380 3773 int *symbol_map;
4c3721d5 3774 boolean pass;
ab0434c2 3775 boolean skip_next;
4c3721d5
ILT		 3776
3777 output_bfd = finfo->output_bfd;
3778 sym_count = obj_aout_external_sym_count (input_bfd);
3779 strings = obj_aout_external_strings (input_bfd);
3780 strip = finfo->info->strip;
3781 discard = finfo->info->discard;
1afd2380 3782 outsym = finfo->output_syms;
4c3721d5
ILT		 3783
3784 /* First write out a symbol for this object file, unless we are
3785 discarding such symbols. */
3786 if (strip != strip_all
3787 && (strip != strip_some
3788 || bfd_hash_lookup (finfo->info->keep_hash, input_bfd->filename,
3789 false, false) != NULL)
3790 && discard != discard_all)
3791 {
3792 bfd_h_put_8 (output_bfd, N_TEXT, outsym->e_type);
3793 bfd_h_put_8 (output_bfd, 0, outsym->e_other);
3794 bfd_h_put_16 (output_bfd, (bfd_vma) 0, outsym->e_desc);
1afd2380 3795 strtab_index = add_to_stringtab (output_bfd, finfo->strtab,
d17fc4c9
ILT		 3796 input_bfd->filename, false);
3797 if (strtab_index == (bfd_size_type) -1)
1afd2380 3798 return false;
d17fc4c9 3799 PUT_WORD (output_bfd, strtab_index, outsym->e_strx);
4c3721d5 3800 PUT_WORD (output_bfd,
2edc8357
ILT		 3801 (bfd_get_section_vma (output_bfd,
3802 obj_textsec (input_bfd)->output_section)
3803 + obj_textsec (input_bfd)->output_offset),
4c3721d5
ILT		 3804 outsym->e_value);
3805 ++obj_aout_external_sym_count (output_bfd);
3806 ++outsym;
3807 }
3808
3809 pass = false;
ab0434c2 3810 skip_next = false;
4c3721d5
ILT		 3811 sym = obj_aout_external_syms (input_bfd);
3812 sym_end = sym + sym_count;
3813 sym_hash = obj_aout_sym_hashes (input_bfd);
1afd2380 3814 symbol_map = finfo->symbol_map;
4c3721d5
ILT		 3815 for (; sym < sym_end; sym++, sym_hash++, symbol_map++)
3816 {
3817 const char *name;
3818 int type;
d6d6b18a 3819 struct aout_link_hash_entry *h;
4c3721d5
ILT		 3820 boolean skip;
3821 asection *symsec;
3822 bfd_vma val = 0;
d17fc4c9 3823 boolean copy;
4c3721d5
ILT		 3824
3825 *symbol_map = -1;
3826
3827 type = bfd_h_get_8 (input_bfd, sym->e_type);
3828 name = strings + GET_WORD (input_bfd, sym->e_strx);
3829
d6d6b18a
ILT		 3830 h = NULL;
3831
4c3721d5
ILT		 3832 if (pass)
3833 {
53155af1
ILT		 3834 /* Pass this symbol through. It is the target of an
3835 indirect or warning symbol. */
4c3721d5
ILT		 3836 val = GET_WORD (input_bfd, sym->e_value);
3837 pass = false;
3838 }
ab0434c2 3839 else if (skip_next)
53155af1
ILT		 3840 {
3841 /* Skip this symbol, which is the target of an indirect
3842 symbol that we have changed to no longer be an indirect
3843 symbol. */
ab0434c2 3844 skip_next = false;
53155af1
ILT		 3845 continue;
3846 }
4c3721d5
ILT		 3847 else
3848 {
53155af1 3849 struct aout_link_hash_entry *hresolve;
4c3721d5
ILT		 3850
3851 /* We have saved the hash table entry for this symbol, if
3852 there is one. Note that we could just look it up again
3853 in the hash table, provided we first check that it is an
3854 external symbol. */
3855 h = *sym_hash;
3856
3a5b50f4
ILT		 3857 /* If this is an indirect or warning symbol, then change
3858 hresolve to the base symbol. We also change *sym_hash so
3859 that the relocation routines relocate against the real
3860 symbol. */
53155af1
ILT		 3861 hresolve = h;
3862 if (h != (struct aout_link_hash_entry *) NULL
3a5b50f4
ILT		 3863 && (h->root.type == bfd_link_hash_indirect
3864 || h->root.type == bfd_link_hash_warning))
53155af1
ILT		 3865 {
3866 hresolve = (struct aout_link_hash_entry *) h->root.u.i.link;
118e8d1c
ILT		 3867 while (hresolve->root.type == bfd_link_hash_indirect
3868 || hresolve->root.type == bfd_link_hash_warning)
53155af1
ILT		 3869 hresolve = ((struct aout_link_hash_entry *)
3870 hresolve->root.u.i.link);
3871 *sym_hash = hresolve;
3872 }
3873
4c3721d5
ILT		 3874 /* If the symbol has already been written out, skip it. */
3875 if (h != (struct aout_link_hash_entry *) NULL
e85e8bfe 3876 && h->root.type != bfd_link_hash_warning
35fee729 3877 && h->written)
4c3721d5 3878 {
ab0434c2
ILT		 3879 if ((type & N_TYPE) == N_INDR
3880 || type == N_WARNING)
3881 skip_next = true;
4c3721d5
ILT		 3882 *symbol_map = h->indx;
3883 continue;
3884 }
3885
3886 /* See if we are stripping this symbol. */
3887 skip = false;
3888 switch (strip)
3889 {
3890 case strip_none:
3891 break;
3892 case strip_debugger:
3893 if ((type & N_STAB) != 0)
3894 skip = true;
3895 break;
3896 case strip_some:
3897 if (bfd_hash_lookup (finfo->info->keep_hash, name, false, false)
3898 == NULL)
3899 skip = true;
3900 break;
3901 case strip_all:
3902 skip = true;
3903 break;
3904 }
3905 if (skip)
3906 {
3907 if (h != (struct aout_link_hash_entry *) NULL)
35fee729 3908 h->written = true;
4c3721d5
ILT		 3909 continue;
3910 }
3911
3912 /* Get the value of the symbol. */
4298e311
ILT		 3913 if ((type & N_TYPE) == N_TEXT
3914 || type == N_WEAKT)
4c3721d5 3915 symsec = obj_textsec (input_bfd);
4298e311
ILT		 3916 else if ((type & N_TYPE) == N_DATA
3917 || type == N_WEAKD)
4c3721d5 3918 symsec = obj_datasec (input_bfd);
4298e311
ILT		 3919 else if ((type & N_TYPE) == N_BSS
3920 || type == N_WEAKB)
4c3721d5 3921 symsec = obj_bsssec (input_bfd);
4298e311
ILT		 3922 else if ((type & N_TYPE) == N_ABS
3923 || type == N_WEAKA)
4587b578 3924 symsec = bfd_abs_section_ptr;
53155af1
ILT		 3925 else if (((type & N_TYPE) == N_INDR
3926 && (hresolve == (struct aout_link_hash_entry *) NULL
3927 || (hresolve->root.type != bfd_link_hash_defined
6c97aedf 3928 && hresolve->root.type != bfd_link_hash_defweak
53155af1 3929 && hresolve->root.type != bfd_link_hash_common)))
4c3721d5
ILT		 3930 || type == N_WARNING)
3931 {
53155af1
ILT		 3932 /* Pass the next symbol through unchanged. The
3933 condition above for indirect symbols is so that if
3934 the indirect symbol was defined, we output it with
3935 the correct definition so the debugger will
3936 understand it. */
4c3721d5
ILT		 3937 pass = true;
3938 val = GET_WORD (input_bfd, sym->e_value);
3939 symsec = NULL;
3940 }
3941 else if ((type & N_STAB) != 0)
3942 {
3943 val = GET_WORD (input_bfd, sym->e_value);
3944 symsec = NULL;
3945 }
3946 else
3947 {
53155af1
ILT		 3948 /* If we get here with an indirect symbol, it means that
3949 we are outputting it with a real definition. In such
3950 a case we do not want to output the next symbol,
3951 which is the target of the indirection. */
3952 if ((type & N_TYPE) == N_INDR)
ab0434c2 3953 skip_next = true;
53155af1 3954
f4945271
ILT		 3955 symsec = NULL;
3956
53155af1
ILT		 3957 /* We need to get the value from the hash table. We use
3958 hresolve so that if we have defined an indirect
3959 symbol we output the final definition. */
4c3721d5 3960 if (h == (struct aout_link_hash_entry *) NULL)
f4945271
ILT		 3961 {
3962 switch (type & N_TYPE)
3963 {
3964 case N_SETT:
3965 symsec = obj_textsec (input_bfd);
3966 break;
3967 case N_SETD:
3968 symsec = obj_datasec (input_bfd);
3969 break;
3970 case N_SETB:
3971 symsec = obj_bsssec (input_bfd);
3972 break;
3973 case N_SETA:
3974 symsec = bfd_abs_section_ptr;
3975 break;
3976 default:
3977 val = 0;
3978 break;
3979 }
3980 }
6c97aedf
ILT		 3981 else if (hresolve->root.type == bfd_link_hash_defined
3982 || hresolve->root.type == bfd_link_hash_defweak)
4c3721d5 3983 {
53155af1 3984 asection *input_section;
4c3721d5
ILT		 3985 asection *output_section;
3986
6c97aedf
ILT		 3987 /* This case usually means a common symbol which was
3988 turned into a defined symbol. */
53155af1
ILT		 3989 input_section = hresolve->root.u.def.section;
3990 output_section = input_section->output_section;
4587b578 3991 BFD_ASSERT (bfd_is_abs_section (output_section)
4c3721d5 3992 || output_section->owner == output_bfd);
53155af1 3993 val = (hresolve->root.u.def.value
4c3721d5 3994 + bfd_get_section_vma (output_bfd, output_section)
53155af1 3995 + input_section->output_offset);
4c3721d5
ILT		 3996
3997 /* Get the correct type based on the section. If
3998 this is a constructed set, force it to be
3999 globally visible. */
4000 if (type == N_SETT
4001 || type == N_SETD
4002 || type == N_SETB
4003 || type == N_SETA)
4004 type |= N_EXT;
4005
4006 type &=~ N_TYPE;
4007
4008 if (output_section == obj_textsec (output_bfd))
6c97aedf
ILT		 4009 type |= (hresolve->root.type == bfd_link_hash_defined
4010 ? N_TEXT
4011 : N_WEAKT);
4c3721d5 4012 else if (output_section == obj_datasec (output_bfd))
6c97aedf
ILT		 4013 type |= (hresolve->root.type == bfd_link_hash_defined
4014 ? N_DATA
4015 : N_WEAKD);
4c3721d5 4016 else if (output_section == obj_bsssec (output_bfd))
6c97aedf
ILT		 4017 type |= (hresolve->root.type == bfd_link_hash_defined
4018 ? N_BSS
4019 : N_WEAKB);
4c3721d5 4020 else
6c97aedf
ILT		 4021 type |= (hresolve->root.type == bfd_link_hash_defined
4022 ? N_ABS
4023 : N_WEAKA);
4c3721d5 4024 }
53155af1
ILT		 4025 else if (hresolve->root.type == bfd_link_hash_common)
4026 val = hresolve->root.u.c.size;
6c97aedf 4027 else if (hresolve->root.type == bfd_link_hash_undefweak)
4298e311
ILT		 4028 {
4029 val = 0;
4030 type = N_WEAKU;
4031 }
4c3721d5
ILT		 4032 else
4033 val = 0;
4c3721d5
ILT		 4034 }
4035 if (symsec != (asection *) NULL)
4036 val = (symsec->output_section->vma
4037 + symsec->output_offset
4038 + (GET_WORD (input_bfd, sym->e_value)
4039 - symsec->vma));
4040
4041 /* If this is a global symbol set the written flag, and if
4042 it is a local symbol see if we should discard it. */
4043 if (h != (struct aout_link_hash_entry *) NULL)
4044 {
35fee729 4045 h->written = true;
4c3721d5
ILT		 4046 h->indx = obj_aout_external_sym_count (output_bfd);
4047 }
f4945271
ILT		 4048 else if ((type & N_TYPE) != N_SETT
4049 && (type & N_TYPE) != N_SETD
4050 && (type & N_TYPE) != N_SETB
4051 && (type & N_TYPE) != N_SETA)
4c3721d5
ILT		 4052 {
4053 switch (discard)
4054 {
4055 case discard_none:
4056 break;
4057 case discard_l:
4058 if (*name == *finfo->info->lprefix
4059 && (finfo->info->lprefix_len == 1
4060 || strncmp (name, finfo->info->lprefix,
4061 finfo->info->lprefix_len) == 0))
4062 skip = true;
4063 break;
4064 case discard_all:
4065 skip = true;
4066 break;
4067 }
4068 if (skip)
4069 {
4070 pass = false;
4071 continue;
4072 }
4073 }
4074 }
4075
4076 /* Copy this symbol into the list of symbols we are going to
4077 write out. */
4078 bfd_h_put_8 (output_bfd, type, outsym->e_type);
4079 bfd_h_put_8 (output_bfd, bfd_h_get_8 (input_bfd, sym->e_other),
4080 outsym->e_other);
4081 bfd_h_put_16 (output_bfd, bfd_h_get_16 (input_bfd, sym->e_desc),
4082 outsym->e_desc);
d17fc4c9 4083 copy = false;
d6d6b18a
ILT		 4084 if (! finfo->info->keep_memory)
4085 {
4086 /* name points into a string table which we are going to
4087 free. If there is a hash table entry, use that string.
4088 Otherwise, copy name into memory. */
4089 if (h != (struct aout_link_hash_entry *) NULL)
1afd2380 4090 name = h->root.root.string;
d6d6b18a 4091 else
d17fc4c9 4092 copy = true;
d6d6b18a 4093 }
1afd2380 4094 strtab_index = add_to_stringtab (output_bfd, finfo->strtab,
d17fc4c9
ILT		 4095 name, copy);
4096 if (strtab_index == (bfd_size_type) -1)
1afd2380 4097 return false;
d17fc4c9 4098 PUT_WORD (output_bfd, strtab_index, outsym->e_strx);
4c3721d5
ILT		 4099 PUT_WORD (output_bfd, val, outsym->e_value);
4100 *symbol_map = obj_aout_external_sym_count (output_bfd);
4101 ++obj_aout_external_sym_count (output_bfd);
4102 ++outsym;
4103 }
4104
4105 /* Write out the output symbols we have just constructed. */
1afd2380 4106 if (outsym > finfo->output_syms)
4c3721d5
ILT		 4107 {
4108 bfd_size_type outsym_count;
4109
4110 if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0)
1afd2380
ILT		 4111 return false;
4112 outsym_count = outsym - finfo->output_syms;
4113 if (bfd_write ((PTR) finfo->output_syms,
4114 (bfd_size_type) EXTERNAL_NLIST_SIZE,
4c3721d5
ILT		 4115 (bfd_size_type) outsym_count, output_bfd)
4116 != outsym_count * EXTERNAL_NLIST_SIZE)
1afd2380 4117 return false;
4c3721d5
ILT		 4118 finfo->symoff += outsym_count * EXTERNAL_NLIST_SIZE;
4119 }
4120
4121 return true;
4122}
4123
4124/* Write out a symbol that was not associated with an a.out input
4125 object. */
4126
4127static boolean
4128aout_link_write_other_symbol (h, data)
4129 struct aout_link_hash_entry *h;
4130 PTR data;
4131{
4132 struct aout_final_link_info *finfo = (struct aout_final_link_info *) data;
4133 bfd *output_bfd;
4134 int type;
4135 bfd_vma val;
4136 struct external_nlist outsym;
d17fc4c9 4137 bfd_size_type indx;
4c3721d5 4138
e85e8bfe
ILT		 4139 output_bfd = finfo->output_bfd;
4140
4141 if (aout_backend_info (output_bfd)->write_dynamic_symbol != NULL)
4142 {
4143 if (! ((*aout_backend_info (output_bfd)->write_dynamic_symbol)
4144 (output_bfd, finfo->info, h)))
4145 {
4146 /* FIXME: No way to handle errors. */
4147 abort ();
4148 }
4149 }
4150
35fee729 4151 if (h->written)
4c3721d5
ILT		 4152 return true;
4153
35fee729 4154 h->written = true;
9783e04a 4155
74942465
ILT		 4156 /* An indx of -2 means the symbol must be written. */
4157 if (h->indx != -2
4158 && (finfo->info->strip == strip_all
4159 || (finfo->info->strip == strip_some
4160 && bfd_hash_lookup (finfo->info->keep_hash, h->root.root.string,
4161 false, false) == NULL)))
9783e04a
DM		 4162 return true;
4163
4c3721d5
ILT		 4164 switch (h->root.type)
4165 {
4166 default:
4c3721d5
ILT		 4167 abort ();
4168 /* Avoid variable not initialized warnings. */
4169 return true;
f4945271
ILT		 4170 case bfd_link_hash_new:
4171 /* This can happen for set symbols when sets are not being
4172 built. */
4173 return true;
4c3721d5
ILT		 4174 case bfd_link_hash_undefined:
4175 type = N_UNDF | N_EXT;
4176 val = 0;
4177 break;
4178 case bfd_link_hash_defined:
6c97aedf 4179 case bfd_link_hash_defweak:
4c3721d5
ILT		 4180 {
4181 asection *sec;
4182
4f019d04 4183 sec = h->root.u.def.section->output_section;
4587b578 4184 BFD_ASSERT (bfd_is_abs_section (sec)
4c3721d5
ILT		 4185 || sec->owner == output_bfd);
4186 if (sec == obj_textsec (output_bfd))
6c97aedf 4187 type = h->root.type == bfd_link_hash_defined ? N_TEXT : N_WEAKT;
4c3721d5 4188 else if (sec == obj_datasec (output_bfd))
6c97aedf 4189 type = h->root.type == bfd_link_hash_defined ? N_DATA : N_WEAKD;
4c3721d5 4190 else if (sec == obj_bsssec (output_bfd))
6c97aedf 4191 type = h->root.type == bfd_link_hash_defined ? N_BSS : N_WEAKB;
4c3721d5 4192 else
6c97aedf
ILT		 4193 type = h->root.type == bfd_link_hash_defined ? N_ABS : N_WEAKA;
4194 type |= N_EXT;
4c3721d5 4195 val = (h->root.u.def.value
4f019d04
ILT		 4196 + sec->vma
4197 + h->root.u.def.section->output_offset);
4c3721d5
ILT		 4198 }
4199 break;
4200 case bfd_link_hash_common:
4201 type = N_UNDF | N_EXT;
4202 val = h->root.u.c.size;
4203 break;
6c97aedf 4204 case bfd_link_hash_undefweak:
4298e311
ILT		 4205 type = N_WEAKU;
4206 val = 0;
4c3721d5
ILT		 4207 case bfd_link_hash_indirect:
4208 case bfd_link_hash_warning:
4209 /* FIXME: Ignore these for now. The circumstances under which
4210 they should be written out are not clear to me. */
4211 return true;
4212 }
4213
4214 bfd_h_put_8 (output_bfd, type, outsym.e_type);
4215 bfd_h_put_8 (output_bfd, 0, outsym.e_other);
4216 bfd_h_put_16 (output_bfd, 0, outsym.e_desc);
1afd2380 4217 indx = add_to_stringtab (output_bfd, finfo->strtab, h->root.root.string,
d17fc4c9
ILT		 4218 false);
4219 if (indx == (bfd_size_type) -1)
4220 {
4221 /* FIXME: No way to handle errors. */
4222 abort ();
4223 }
4224 PUT_WORD (output_bfd, indx, outsym.e_strx);
4c3721d5
ILT		 4225 PUT_WORD (output_bfd, val, outsym.e_value);
4226
4227 if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0
4228 || bfd_write ((PTR) &outsym, (bfd_size_type) EXTERNAL_NLIST_SIZE,
4229 (bfd_size_type) 1, output_bfd) != EXTERNAL_NLIST_SIZE)
4230 {
4231 /* FIXME: No way to handle errors. */
4232 abort ();
4233 }
4234
4235 finfo->symoff += EXTERNAL_NLIST_SIZE;
4236 h->indx = obj_aout_external_sym_count (output_bfd);
4237 ++obj_aout_external_sym_count (output_bfd);
4238
4239 return true;
4240}
4241
4242/* Link an a.out section into the output file. */
4243
4244static boolean
4245aout_link_input_section (finfo, input_bfd, input_section, reloff_ptr,
1afd2380 4246 rel_size)
4c3721d5
ILT		 4247 struct aout_final_link_info *finfo;
4248 bfd *input_bfd;
4249 asection *input_section;
4250 file_ptr *reloff_ptr;
4251 bfd_size_type rel_size;
4c3721d5
ILT		 4252{
4253 bfd_size_type input_size;
e85e8bfe 4254 PTR relocs;
4c3721d5
ILT		 4255
4256 /* Get the section contents. */
4257 input_size = bfd_section_size (input_bfd, input_section);
1afd2380
ILT		 4258 if (! bfd_get_section_contents (input_bfd, input_section,
4259 (PTR) finfo->contents,
4c3721d5 4260 (file_ptr) 0, input_size))
1afd2380 4261 return false;
4c3721d5 4262
e85e8bfe
ILT		 4263 /* Read in the relocs if we haven't already done it. */
4264 if (aout_section_data (input_section) != NULL
4265 && aout_section_data (input_section)->relocs != NULL)
4266 relocs = aout_section_data (input_section)->relocs;
4267 else
80425e6c 4268 {
1afd2380 4269 relocs = finfo->relocs;
875e4716
ILT		 4270 if (rel_size > 0)
4271 {
4272 if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0
4273 || bfd_read (relocs, 1, rel_size, input_bfd) != rel_size)
4274 return false;
4275 }
80425e6c 4276 }
4c3721d5
ILT		 4277
4278 /* Relocate the section contents. */
4279 if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE)
4280 {
4281 if (! aout_link_input_section_std (finfo, input_bfd, input_section,
4282 (struct reloc_std_external *) relocs,
1afd2380
ILT		 4283 rel_size, finfo->contents))
4284 return false;
4c3721d5
ILT		 4285 }
4286 else
4287 {
4288 if (! aout_link_input_section_ext (finfo, input_bfd, input_section,
4289 (struct reloc_ext_external *) relocs,
1afd2380
ILT		 4290 rel_size, finfo->contents))
4291 return false;
4c3721d5
ILT		 4292 }
4293
4294 /* Write out the section contents. */
4295 if (! bfd_set_section_contents (finfo->output_bfd,
4296 input_section->output_section,
1afd2380 4297 (PTR) finfo->contents,
728472f1 4298 input_section->output_offset,
4c3721d5 4299 input_size))
1afd2380 4300 return false;
4c3721d5
ILT		 4301
4302 /* If we are producing relocateable output, the relocs were
4303 modified, and we now write them out. */
875e4716 4304 if (finfo->info->relocateable && rel_size > 0)
4c3721d5
ILT		 4305 {
4306 if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0)
1afd2380 4307 return false;
4c3721d5
ILT		 4308 if (bfd_write (relocs, (bfd_size_type) 1, rel_size, finfo->output_bfd)
4309 != rel_size)
1afd2380 4310 return false;
4c3721d5
ILT		 4311 *reloff_ptr += rel_size;
4312
4313 /* Assert that the relocs have not run into the symbols, and
4314 that if these are the text relocs they have not run into the
4315 data relocs. */
4316 BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd)
4317 && (reloff_ptr != &finfo->treloff
4318 || (*reloff_ptr
4319 <= obj_datasec (finfo->output_bfd)->rel_filepos)));
4320 }
4321
4322 return true;
4323}
4324
4325/* Get the section corresponding to a reloc index. */
4326
4327static INLINE asection *
4328aout_reloc_index_to_section (abfd, indx)
4329 bfd *abfd;
4330 int indx;
4331{
4332 switch (indx & N_TYPE)
4333 {
4334 case N_TEXT:
4335 return obj_textsec (abfd);
4336 case N_DATA:
4337 return obj_datasec (abfd);
4338 case N_BSS:
4339 return obj_bsssec (abfd);
4340 case N_ABS:
fa2302b8 4341 case N_UNDF:
4587b578 4342 return bfd_abs_section_ptr;
4c3721d5
ILT		 4343 default:
4344 abort ();
4345 }
4346}
4347
4348/* Relocate an a.out section using standard a.out relocs. */
4349
4350static boolean
4351aout_link_input_section_std (finfo, input_bfd, input_section, relocs,
1afd2380 4352 rel_size, contents)
4c3721d5
ILT		 4353 struct aout_final_link_info *finfo;
4354 bfd *input_bfd;
4355 asection *input_section;
4356 struct reloc_std_external *relocs;
4357 bfd_size_type rel_size;
4358 bfd_byte *contents;
4c3721d5 4359{
e85e8bfe
ILT		 4360 boolean (*check_dynamic_reloc) PARAMS ((struct bfd_link_info *,
4361 bfd *, asection *,
4362 struct aout_link_hash_entry *,
ae115e51
ILT		 4363 PTR, bfd_byte *, boolean *,
4364 bfd_vma *));
4c3721d5
ILT		 4365 bfd *output_bfd;
4366 boolean relocateable;
4367 struct external_nlist *syms;
4368 char *strings;
4369 struct aout_link_hash_entry **sym_hashes;
1afd2380 4370 int *symbol_map;
4c3721d5
ILT		 4371 bfd_size_type reloc_count;
4372 register struct reloc_std_external *rel;
4373 struct reloc_std_external *rel_end;
4374
4375 output_bfd = finfo->output_bfd;
e85e8bfe 4376 check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc;
4c3721d5
ILT		 4377
4378 BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE);
4379 BFD_ASSERT (input_bfd->xvec->header_byteorder_big_p
4380 == output_bfd->xvec->header_byteorder_big_p);
4381
4382 relocateable = finfo->info->relocateable;
4383 syms = obj_aout_external_syms (input_bfd);
4384 strings = obj_aout_external_strings (input_bfd);
4385 sym_hashes = obj_aout_sym_hashes (input_bfd);
1afd2380 4386 symbol_map = finfo->symbol_map;
4c3721d5
ILT		 4387
4388 reloc_count = rel_size / RELOC_STD_SIZE;
4389 rel = relocs;
4390 rel_end = rel + reloc_count;
4391 for (; rel < rel_end; rel++)
4392 {
4393 bfd_vma r_addr;
4394 int r_index;
4395 int r_extern;
4396 int r_pcrel;
ae115e51 4397 int r_baserel = 0;
f42fe159 4398 reloc_howto_type *howto;
ae115e51 4399 struct aout_link_hash_entry *h = NULL;
4c3721d5
ILT		 4400 bfd_vma relocation;
4401 bfd_reloc_status_type r;
4402
4403 r_addr = GET_SWORD (input_bfd, rel->r_address);
4404
f42fe159
ILT		 4405#ifdef MY_reloc_howto
4406 howto = MY_reloc_howto(input_bfd, rel, r_index, r_extern, r_pcrel);
4407#else
ae115e51
ILT		 4408 {
4409 int r_jmptable;
4410 int r_relative;
4411 int r_length;
4412 unsigned int howto_idx;
4c3721d5 4413
ae115e51
ILT		 4414 if (input_bfd->xvec->header_byteorder_big_p)
4415 {
4416 r_index = ((rel->r_index[0] << 16)
4417 | (rel->r_index[1] << 8)
4418 | rel->r_index[2]);
4419 r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
4420 r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
4421 r_baserel = (0 != (rel->r_type[0] & RELOC_STD_BITS_BASEREL_BIG));
4422 r_jmptable= (0 != (rel->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG));
4423 r_relative= (0 != (rel->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG));
4424 r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_BIG)
4425 >> RELOC_STD_BITS_LENGTH_SH_BIG);
4426 }
4427 else
4428 {
4429 r_index = ((rel->r_index[2] << 16)
4430 | (rel->r_index[1] << 8)
4431 | rel->r_index[0]);
4432 r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
4433 r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
4434 r_baserel = (0 != (rel->r_type[0]
4435 & RELOC_STD_BITS_BASEREL_LITTLE));
4436 r_jmptable= (0 != (rel->r_type[0]
4437 & RELOC_STD_BITS_JMPTABLE_LITTLE));
4438 r_relative= (0 != (rel->r_type[0]
4439 & RELOC_STD_BITS_RELATIVE_LITTLE));
4440 r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE)
4441 >> RELOC_STD_BITS_LENGTH_SH_LITTLE);
4442 }
4443
4444 howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel
4445 + 16 * r_jmptable + 32 * r_relative);
4446 BFD_ASSERT (howto_idx < TABLE_SIZE (howto_table_std));
4447 howto = howto_table_std + howto_idx;
4448 }
f42fe159 4449#endif
4c3721d5
ILT		 4450
4451 if (relocateable)
4452 {
4453 /* We are generating a relocateable output file, and must
4454 modify the reloc accordingly. */
4455 if (r_extern)
4456 {
4c3721d5
ILT		 4457 /* If we know the symbol this relocation is against,
4458 convert it into a relocation against a section. This
4459 is what the native linker does. */
4460 h = sym_hashes[r_index];
4461 if (h != (struct aout_link_hash_entry *) NULL
6c97aedf
ILT		 4462 && (h->root.type == bfd_link_hash_defined
4463 || h->root.type == bfd_link_hash_defweak))
4c3721d5
ILT		 4464 {
4465 asection *output_section;
4466
4467 /* Change the r_extern value. */
4468 if (output_bfd->xvec->header_byteorder_big_p)
4469 rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_BIG;
4470 else
4471 rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_LITTLE;
4472
4473 /* Compute a new r_index. */
4474 output_section = h->root.u.def.section->output_section;
4475 if (output_section == obj_textsec (output_bfd))
4476 r_index = N_TEXT;
4477 else if (output_section == obj_datasec (output_bfd))
4478 r_index = N_DATA;
4479 else if (output_section == obj_bsssec (output_bfd))
4480 r_index = N_BSS;
4481 else
4482 r_index = N_ABS;
4483
4484 /* Add the symbol value and the section VMA to the
4485 addend stored in the contents. */
4486 relocation = (h->root.u.def.value
4487 + output_section->vma
4488 + h->root.u.def.section->output_offset);
4489 }
4490 else
4491 {
4492 /* We must change r_index according to the symbol
4493 map. */
4494 r_index = symbol_map[r_index];
4495
4496 if (r_index == -1)
4497 {
74942465
ILT		 4498 if (h != NULL)
4499 {
4500 /* We decided to strip this symbol, but it
4501 turns out that we can't. Note that we
4502 lose the other and desc information here.
4503 I don't think that will ever matter for a
4504 global symbol. */
4505 if (h->indx < 0)
4506 {
4507 h->indx = -2;
4508 h->written = false;
4509 if (! aout_link_write_other_symbol (h,
4510 (PTR) finfo))
4511 return false;
4512 }
4513 r_index = h->indx;
4514 }
4515 else
4516 {
4517 const char *name;
4518
4519 name = strings + GET_WORD (input_bfd,
4520 syms[r_index].e_strx);
4521 if (! ((*finfo->info->callbacks->unattached_reloc)
4522 (finfo->info, name, input_bfd, input_section,
4523 r_addr)))
4524 return false;
4525 r_index = 0;
4526 }
4c3721d5
ILT		 4527 }
4528
4529 relocation = 0;
4530 }
4531
4532 /* Write out the new r_index value. */
4533 if (output_bfd->xvec->header_byteorder_big_p)
4534 {
4535 rel->r_index[0] = r_index >> 16;
4536 rel->r_index[1] = r_index >> 8;
4537 rel->r_index[2] = r_index;
4538 }
4539 else
4540 {
4541 rel->r_index[2] = r_index >> 16;
4542 rel->r_index[1] = r_index >> 8;
4543 rel->r_index[0] = r_index;
4544 }
4545 }
4546 else
4547 {
4548 asection *section;
4549
4550 /* This is a relocation against a section. We must
4551 adjust by the amount that the section moved. */
4552 section = aout_reloc_index_to_section (input_bfd, r_index);
4553 relocation = (section->output_section->vma
4554 + section->output_offset
4555 - section->vma);
4556 }
4557
4558 /* Change the address of the relocation. */
4559 PUT_WORD (output_bfd,
4560 r_addr + input_section->output_offset,
4561 rel->r_address);
4562
4563 /* Adjust a PC relative relocation by removing the reference
e68de5d5
ILT		 4564 to the original address in the section and including the
4565 reference to the new address. */
4c3721d5 4566 if (r_pcrel)
e68de5d5
ILT		 4567 relocation -= (input_section->output_section->vma
4568 + input_section->output_offset
4569 - input_section->vma);
4c3721d5 4570
943fbd5b
KR		 4571#ifdef MY_relocatable_reloc
4572 MY_relocatable_reloc (howto, output_bfd, rel, relocation, r_addr);
4573#endif
4574
4c3721d5
ILT		 4575 if (relocation == 0)
4576 r = bfd_reloc_ok;
4577 else
34e9ffbc 4578 r = MY_relocate_contents (howto,
4c3721d5
ILT		 4579 input_bfd, relocation,
4580 contents + r_addr);
4581 }
4582 else
4583 {
ae115e51
ILT		 4584 boolean hundef;
4585
4c3721d5
ILT		 4586 /* We are generating an executable, and must do a full
4587 relocation. */
ae115e51 4588 hundef = false;
4c3721d5
ILT		 4589 if (r_extern)
4590 {
4c3721d5 4591 h = sym_hashes[r_index];
e85e8bfe 4592
4c3721d5 4593 if (h != (struct aout_link_hash_entry *) NULL
6c97aedf
ILT		 4594 && (h->root.type == bfd_link_hash_defined
4595 || h->root.type == bfd_link_hash_defweak))
4c3721d5
ILT		 4596 {
4597 relocation = (h->root.u.def.value
4598 + h->root.u.def.section->output_section->vma
4599 + h->root.u.def.section->output_offset);
4600 }
4298e311 4601 else if (h != (struct aout_link_hash_entry *) NULL
6c97aedf 4602 && h->root.type == bfd_link_hash_undefweak)
4298e311 4603 relocation = 0;
4c3721d5
ILT		 4604 else
4605 {
ae115e51 4606 hundef = true;
4c3721d5
ILT		 4607 relocation = 0;
4608 }
4609 }
4610 else
4611 {
4612 asection *section;
4613
4614 section = aout_reloc_index_to_section (input_bfd, r_index);
4615 relocation = (section->output_section->vma
4616 + section->output_offset
4617 - section->vma);
e68de5d5
ILT		 4618 if (r_pcrel)
4619 relocation += input_section->vma;
4c3721d5
ILT		 4620 }
4621
ae115e51
ILT		 4622 if (check_dynamic_reloc != NULL)
4623 {
4624 boolean skip;
4625
4626 if (! ((*check_dynamic_reloc)
4627 (finfo->info, input_bfd, input_section, h,
4628 (PTR) rel, contents, &skip, &relocation)))
4629 return false;
4630 if (skip)
4631 continue;
4632 }
4633
4634 /* Now warn if a global symbol is undefined. We could not
4635 do this earlier, because check_dynamic_reloc might want
4636 to skip this reloc. */
4637 if (hundef && ! finfo->info->shared && ! r_baserel)
4638 {
4639 const char *name;
4640
4641 name = strings + GET_WORD (input_bfd, syms[r_index].e_strx);
4642 if (! ((*finfo->info->callbacks->undefined_symbol)
4643 (finfo->info, name, input_bfd, input_section, r_addr)))
4644 return false;
4645 }
4646
34e9ffbc 4647 r = MY_final_link_relocate (howto,
4c3721d5
ILT		 4648 input_bfd, input_section,
4649 contents, r_addr, relocation,
4650 (bfd_vma) 0);
4651 }
4652
4653 if (r != bfd_reloc_ok)
4654 {
4655 switch (r)
4656 {
4657 default:
4658 case bfd_reloc_outofrange:
4659 abort ();
4660 case bfd_reloc_overflow:
4991ebb9
ILT		 4661 {
4662 const char *name;
4663
4664 if (r_extern)
4665 name = strings + GET_WORD (input_bfd,
4666 syms[r_index].e_strx);
4667 else
4668 {
4669 asection *s;
4670
4671 s = aout_reloc_index_to_section (input_bfd, r_index);
4672 name = bfd_section_name (input_bfd, s);
4673 }
4674 if (! ((*finfo->info->callbacks->reloc_overflow)
f42fe159 4675 (finfo->info, name, howto->name,
4991ebb9
ILT		 4676 (bfd_vma) 0, input_bfd, input_section, r_addr)))
4677 return false;
4678 }
4c3721d5
ILT		 4679 break;
4680 }
4681 }
4682 }
4683
4684 return true;
4685}
4686
4687/* Relocate an a.out section using extended a.out relocs. */
4688
4689static boolean
4690aout_link_input_section_ext (finfo, input_bfd, input_section, relocs,
1afd2380 4691 rel_size, contents)
4c3721d5
ILT		 4692 struct aout_final_link_info *finfo;
4693 bfd *input_bfd;
4694 asection *input_section;
4695 struct reloc_ext_external *relocs;
4696 bfd_size_type rel_size;
4697 bfd_byte *contents;
4c3721d5 4698{
e85e8bfe
ILT		 4699 boolean (*check_dynamic_reloc) PARAMS ((struct bfd_link_info *,
4700 bfd *, asection *,
4701 struct aout_link_hash_entry *,
ae115e51
ILT		 4702 PTR, bfd_byte *, boolean *,
4703 bfd_vma *));
4c3721d5
ILT		 4704 bfd *output_bfd;
4705 boolean relocateable;
4706 struct external_nlist *syms;
4707 char *strings;
4708 struct aout_link_hash_entry **sym_hashes;
1afd2380 4709 int *symbol_map;
4c3721d5
ILT		 4710 bfd_size_type reloc_count;
4711 register struct reloc_ext_external *rel;
4712 struct reloc_ext_external *rel_end;
4713
4714 output_bfd = finfo->output_bfd;
e85e8bfe 4715 check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc;
4c3721d5
ILT		 4716
4717 BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_EXT_SIZE);
4718 BFD_ASSERT (input_bfd->xvec->header_byteorder_big_p
4719 == output_bfd->xvec->header_byteorder_big_p);
4720
4721 relocateable = finfo->info->relocateable;
4722 syms = obj_aout_external_syms (input_bfd);
4723 strings = obj_aout_external_strings (input_bfd);
4724 sym_hashes = obj_aout_sym_hashes (input_bfd);
1afd2380 4725 symbol_map = finfo->symbol_map;
4c3721d5
ILT		 4726
4727 reloc_count = rel_size / RELOC_EXT_SIZE;
4728 rel = relocs;
4729 rel_end = rel + reloc_count;
4730 for (; rel < rel_end; rel++)
4731 {
4732 bfd_vma r_addr;
4733 int r_index;
4734 int r_extern;
ae115e51 4735 unsigned int r_type;
4c3721d5 4736 bfd_vma r_addend;
ae115e51
ILT		 4737 struct aout_link_hash_entry *h = NULL;
4738 asection *r_section = NULL;
4c3721d5
ILT		 4739 bfd_vma relocation;
4740
4741 r_addr = GET_SWORD (input_bfd, rel->r_address);
4742
4743 if (input_bfd->xvec->header_byteorder_big_p)
4744 {
4745 r_index = ((rel->r_index[0] << 16)
4746 | (rel->r_index[1] << 8)
4747 | rel->r_index[2]);
4748 r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG));
4749 r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
4750 >> RELOC_EXT_BITS_TYPE_SH_BIG);
4751 }
4752 else
4753 {
4754 r_index = ((rel->r_index[2] << 16)
4755 | (rel->r_index[1] << 8)
4756 | rel->r_index[0]);
4757 r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE));
4758 r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
4759 >> RELOC_EXT_BITS_TYPE_SH_LITTLE);
4760 }
4761
4762 r_addend = GET_SWORD (input_bfd, rel->r_addend);
4763
ae115e51 4764 BFD_ASSERT (r_type < TABLE_SIZE (howto_table_ext));
e68de5d5 4765
4c3721d5
ILT		 4766 if (relocateable)
4767 {
4768 /* We are generating a relocateable output file, and must
4769 modify the reloc accordingly. */
4770 if (r_extern)
4771 {
4c3721d5
ILT		 4772 /* If we know the symbol this relocation is against,
4773 convert it into a relocation against a section. This
4774 is what the native linker does. */
4775 h = sym_hashes[r_index];
4776 if (h != (struct aout_link_hash_entry *) NULL
6c97aedf
ILT		 4777 && (h->root.type == bfd_link_hash_defined
4778 || h->root.type == bfd_link_hash_defweak))
4c3721d5
ILT		 4779 {
4780 asection *output_section;
4781
4782 /* Change the r_extern value. */
4783 if (output_bfd->xvec->header_byteorder_big_p)
4784 rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_BIG;
4785 else
4786 rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_LITTLE;
4787
4788 /* Compute a new r_index. */
4789 output_section = h->root.u.def.section->output_section;
4790 if (output_section == obj_textsec (output_bfd))
4791 r_index = N_TEXT;
4792 else if (output_section == obj_datasec (output_bfd))
4793 r_index = N_DATA;
4794 else if (output_section == obj_bsssec (output_bfd))
4795 r_index = N_BSS;
4796 else
4797 r_index = N_ABS;
4798
4799 /* Add the symbol value and the section VMA to the
4800 addend. */
4801 relocation = (h->root.u.def.value
4802 + output_section->vma
4803 + h->root.u.def.section->output_offset);
e68de5d5
ILT		 4804
4805 /* Now RELOCATION is the VMA of the final
4806 destination. If this is a PC relative reloc,
4807 then ADDEND is the negative of the source VMA.
4808 We want to set ADDEND to the difference between
4809 the destination VMA and the source VMA, which
4810 means we must adjust RELOCATION by the change in
4811 the source VMA. This is done below. */
4c3721d5
ILT		 4812 }
4813 else
4814 {
4815 /* We must change r_index according to the symbol
4816 map. */
4817 r_index = symbol_map[r_index];
4818
4819 if (r_index == -1)
4820 {
74942465
ILT		 4821 if (h != NULL)
4822 {
4823 /* We decided to strip this symbol, but it
4824 turns out that we can't. Note that we
4825 lose the other and desc information here.
4826 I don't think that will ever matter for a
4827 global symbol. */
4828 if (h->indx < 0)
4829 {
4830 h->indx = -2;
4831 h->written = false;
4832 if (! aout_link_write_other_symbol (h,
4833 (PTR) finfo))
4834 return false;
4835 }
4836 r_index = h->indx;
4837 }
4838 else
4839 {
4840 const char *name;
4841
4842 name = strings + GET_WORD (input_bfd,
4843 syms[r_index].e_strx);
4844 if (! ((*finfo->info->callbacks->unattached_reloc)
4845 (finfo->info, name, input_bfd, input_section,
4846 r_addr)))
4847 return false;
4848 r_index = 0;
4849 }
4c3721d5
ILT		 4850 }
4851
4852 relocation = 0;
e68de5d5
ILT		 4853
4854 /* If this is a PC relative reloc, then the addend
4855 is the negative of the source VMA. We must
4856 adjust it by the change in the source VMA. This
4857 is done below. */
4c3721d5
ILT		 4858 }
4859
4860 /* Write out the new r_index value. */
4861 if (output_bfd->xvec->header_byteorder_big_p)
4862 {
4863 rel->r_index[0] = r_index >> 16;
4864 rel->r_index[1] = r_index >> 8;
4865 rel->r_index[2] = r_index;
4866 }
4867 else
4868 {
4869 rel->r_index[2] = r_index >> 16;
4870 rel->r_index[1] = r_index >> 8;
4871 rel->r_index[0] = r_index;
4872 }
4873 }
4874 else
4875 {
4c3721d5
ILT		 4876 /* This is a relocation against a section. We must
4877 adjust by the amount that the section moved. */
ae115e51
ILT		 4878 r_section = aout_reloc_index_to_section (input_bfd, r_index);
4879 relocation = (r_section->output_section->vma
4880 + r_section->output_offset
4881 - r_section->vma);
4c3721d5 4882
e68de5d5
ILT		 4883 /* If this is a PC relative reloc, then the addend is
4884 the difference in VMA between the destination and the
4885 source. We have just adjusted for the change in VMA
4886 of the destination, so we must also adjust by the
4887 change in VMA of the source. This is done below. */
4c3721d5
ILT		 4888 }
4889
e68de5d5
ILT		 4890 /* As described above, we must always adjust a PC relative
4891 reloc by the change in VMA of the source. */
4892 if (howto_table_ext[r_type].pc_relative)
4893 relocation -= (input_section->output_section->vma
4894 + input_section->output_offset
4895 - input_section->vma);
4896
4c3721d5
ILT		 4897 /* Change the addend if necessary. */
4898 if (relocation != 0)
4899 PUT_WORD (output_bfd, r_addend + relocation, rel->r_addend);
4900
4901 /* Change the address of the relocation. */
4902 PUT_WORD (output_bfd,
4903 r_addr + input_section->output_offset,
4904 rel->r_address);
4905 }
4906 else
4907 {
ae115e51 4908 boolean hundef;
4c3721d5
ILT		 4909 bfd_reloc_status_type r;
4910
4911 /* We are generating an executable, and must do a full
4912 relocation. */
ae115e51 4913 hundef = false;
4c3721d5
ILT		 4914 if (r_extern)
4915 {
4c3721d5 4916 h = sym_hashes[r_index];
e85e8bfe 4917
4c3721d5 4918 if (h != (struct aout_link_hash_entry *) NULL
6c97aedf
ILT		 4919 && (h->root.type == bfd_link_hash_defined
4920 || h->root.type == bfd_link_hash_defweak))
4c3721d5
ILT		 4921 {
4922 relocation = (h->root.u.def.value
4923 + h->root.u.def.section->output_section->vma
4924 + h->root.u.def.section->output_offset);
4925 }
4298e311 4926 else if (h != (struct aout_link_hash_entry *) NULL
6c97aedf 4927 && h->root.type == bfd_link_hash_undefweak)
4298e311 4928 relocation = 0;
4c3721d5
ILT		 4929 else
4930 {
ae115e51 4931 hundef = true;
4c3721d5
ILT		 4932 relocation = 0;
4933 }
4934 }
ae115e51
ILT		 4935 else if (r_type == RELOC_BASE10
4936 || r_type == RELOC_BASE13
4937 || r_type == RELOC_BASE22)
4938 {
4939 struct external_nlist *sym;
4940 int type;
4941
4942 /* For base relative relocs, r_index is always an index
4943 into the symbol table, even if r_extern is 0. */
4944 sym = syms + r_index;
4945 type = bfd_h_get_8 (input_bfd, sym->e_type);
4946 if ((type & N_TYPE) == N_TEXT
4947 || type == N_WEAKT)
4948 r_section = obj_textsec (input_bfd);
4949 else if ((type & N_TYPE) == N_DATA
4950 || type == N_WEAKD)
4951 r_section = obj_datasec (input_bfd);
4952 else if ((type & N_TYPE) == N_BSS
4953 || type == N_WEAKB)
4954 r_section = obj_bsssec (input_bfd);
4955 else if ((type & N_TYPE) == N_ABS
4956 || type == N_WEAKA)
4957 r_section = bfd_abs_section_ptr;
4958 else
4959 abort ();
4960 relocation = (r_section->output_section->vma
4961 + r_section->output_offset
4962 + (GET_WORD (input_bfd, sym->e_value)
4963 - r_section->vma));
4964 }
4c3721d5
ILT		 4965 else
4966 {
ae115e51 4967 r_section = aout_reloc_index_to_section (input_bfd, r_index);
e68de5d5
ILT		 4968
4969 /* If this is a PC relative reloc, then R_ADDEND is the
4970 difference between the two vmas, or
4971 old_dest_sec + old_dest_off - (old_src_sec + old_src_off)
4972 where
4973 old_dest_sec == section->vma
4974 and
4975 old_src_sec == input_section->vma
4976 and
4977 old_src_off == r_addr
4978
4979 _bfd_final_link_relocate expects RELOCATION +
4980 R_ADDEND to be the VMA of the destination minus
4981 r_addr (the minus r_addr is because this relocation
4982 is not pcrel_offset, which is a bit confusing and
4983 should, perhaps, be changed), or
4984 new_dest_sec
4985 where
4986 new_dest_sec == output_section->vma + output_offset
4987 We arrange for this to happen by setting RELOCATION to
4988 new_dest_sec + old_src_sec - old_dest_sec
4989
4990 If this is not a PC relative reloc, then R_ADDEND is
4991 simply the VMA of the destination, so we set
4992 RELOCATION to the change in the destination VMA, or
4993 new_dest_sec - old_dest_sec
4994 */
ae115e51
ILT		 4995 relocation = (r_section->output_section->vma
4996 + r_section->output_offset
4997 - r_section->vma);
e68de5d5
ILT		 4998 if (howto_table_ext[r_type].pc_relative)
4999 relocation += input_section->vma;
4c3721d5
ILT		 5000 }
5001
ae115e51
ILT		 5002 if (check_dynamic_reloc != NULL)
5003 {
5004 boolean skip;
5005
5006 if (! ((*check_dynamic_reloc)
5007 (finfo->info, input_bfd, input_section, h,
5008 (PTR) rel, contents, &skip, &relocation)))
5009 return false;
5010 if (skip)
5011 continue;
5012 }
5013
5014 /* Now warn if a global symbol is undefined. We could not
5015 do this earlier, because check_dynamic_reloc might want
5016 to skip this reloc. */
5017 if (hundef
5018 && ! finfo->info->shared
5019 && r_type != RELOC_BASE10
5020 && r_type != RELOC_BASE13
5021 && r_type != RELOC_BASE22)
5022 {
5023 const char *name;
5024
5025 name = strings + GET_WORD (input_bfd, syms[r_index].e_strx);
5026 if (! ((*finfo->info->callbacks->undefined_symbol)
5027 (finfo->info, name, input_bfd, input_section, r_addr)))
5028 return false;
5029 }
5030
34e9ffbc 5031 r = MY_final_link_relocate (howto_table_ext + r_type,
4c3721d5
ILT		 5032 input_bfd, input_section,
5033 contents, r_addr, relocation,
5034 r_addend);
5035 if (r != bfd_reloc_ok)
5036 {
5037 switch (r)
5038 {
5039 default:
5040 case bfd_reloc_outofrange:
5041 abort ();
5042 case bfd_reloc_overflow:
4991ebb9
ILT		 5043 {
5044 const char *name;
5045
ae115e51
ILT		 5046 if (r_extern
5047 || r_type == RELOC_BASE10
5048 || r_type == RELOC_BASE13
5049 || r_type == RELOC_BASE22)
4991ebb9
ILT		 5050 name = strings + GET_WORD (input_bfd,
5051 syms[r_index].e_strx);
5052 else
5053 {
5054 asection *s;
5055
5056 s = aout_reloc_index_to_section (input_bfd, r_index);
5057 name = bfd_section_name (input_bfd, s);
5058 }
5059 if (! ((*finfo->info->callbacks->reloc_overflow)
5060 (finfo->info, name, howto_table_ext[r_type].name,
5061 r_addend, input_bfd, input_section, r_addr)))
5062 return false;
5063 }
4c3721d5
ILT		 5064 break;
5065 }
5066 }
5067 }
5068 }
5069
5070 return true;
5071}
ec099b4b
ILT		 5072
5073/* Handle a link order which is supposed to generate a reloc. */
5074
5075static boolean
5076aout_link_reloc_link_order (finfo, o, p)
5077 struct aout_final_link_info *finfo;
5078 asection *o;
5079 struct bfd_link_order *p;
5080{
5081 struct bfd_link_order_reloc *pr;
5082 int r_index;
5083 int r_extern;
82b1edf7 5084 reloc_howto_type *howto;
ec099b4b
ILT		 5085 file_ptr *reloff_ptr;
5086 struct reloc_std_external srel;
5087 struct reloc_ext_external erel;
5088 PTR rel_ptr;
5089
5090 pr = p->u.reloc.p;
5091
5092 if (p->type == bfd_section_reloc_link_order)
5093 {
5094 r_extern = 0;
4587b578 5095 if (bfd_is_abs_section (pr->u.section))
ec099b4b
ILT		 5096 r_index = N_ABS | N_EXT;
5097 else
5098 {
5099 BFD_ASSERT (pr->u.section->owner == finfo->output_bfd);
5100 r_index = pr->u.section->target_index;
5101 }
5102 }
5103 else
5104 {
5105 struct aout_link_hash_entry *h;
5106
5107 BFD_ASSERT (p->type == bfd_symbol_reloc_link_order);
5108 r_extern = 1;
5109 h = aout_link_hash_lookup (aout_hash_table (finfo->info),
5110 pr->u.name, false, false, true);
5111 if (h != (struct aout_link_hash_entry *) NULL
74942465 5112 && h->indx >= 0)
ec099b4b 5113 r_index = h->indx;
74942465
ILT		 5114 else if (h != NULL)
5115 {
5116 /* We decided to strip this symbol, but it turns out that we
5117 can't. Note that we lose the other and desc information
5118 here. I don't think that will ever matter for a global
5119 symbol. */
5120 h->indx = -2;
5121 h->written = false;
5122 if (! aout_link_write_other_symbol (h, (PTR) finfo))
5123 return false;
5124 r_index = h->indx;
5125 }
ec099b4b
ILT		 5126 else
5127 {
5128 if (! ((*finfo->info->callbacks->unattached_reloc)
5129 (finfo->info, pr->u.name, (bfd *) NULL,
5130 (asection *) NULL, (bfd_vma) 0)))
5131 return false;
5132 r_index = 0;
5133 }
5134 }
5135
5136 howto = bfd_reloc_type_lookup (finfo->output_bfd, pr->reloc);
82b1edf7 5137 if (howto == 0)
ec099b4b
ILT		 5138 {
5139 bfd_set_error (bfd_error_bad_value);
5140 return false;
5141 }
5142
5143 if (o == obj_textsec (finfo->output_bfd))
5144 reloff_ptr = &finfo->treloff;
5145 else if (o == obj_datasec (finfo->output_bfd))
5146 reloff_ptr = &finfo->dreloff;
5147 else
5148 abort ();
5149
5150 if (obj_reloc_entry_size (finfo->output_bfd) == RELOC_STD_SIZE)
5151 {
f42fe159 5152#ifdef MY_put_reloc
ae115e51
ILT		 5153 MY_put_reloc(finfo->output_bfd, r_extern, r_index, p->offset, howto,
5154 &srel);
f42fe159 5155#else
ae115e51
ILT		 5156 {
5157 int r_pcrel;
5158 int r_baserel;
5159 int r_jmptable;
5160 int r_relative;
5161 int r_length;
5162
5163 r_pcrel = howto->pc_relative;
5164 r_baserel = (howto->type & 8) != 0;
5165 r_jmptable = (howto->type & 16) != 0;
5166 r_relative = (howto->type & 32) != 0;
5167 r_length = howto->size;
5168
5169 PUT_WORD (finfo->output_bfd, p->offset, srel.r_address);
5170 if (finfo->output_bfd->xvec->header_byteorder_big_p)
5171 {
5172 srel.r_index[0] = r_index >> 16;
5173 srel.r_index[1] = r_index >> 8;
5174 srel.r_index[2] = r_index;
5175 srel.r_type[0] =
5176 ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0)
5177 | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0)
5178 | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0)
5179 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0)
5180 | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0)
5181 | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG));
5182 }
5183 else
5184 {
5185 srel.r_index[2] = r_index >> 16;
5186 srel.r_index[1] = r_index >> 8;
5187 srel.r_index[0] = r_index;
5188 srel.r_type[0] =
5189 ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0)
5190 | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0)
5191 | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0)
5192 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0)
5193 | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0)
5194 | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE));
5195 }
5196 }
f42fe159 5197#endif
ec099b4b
ILT		 5198 rel_ptr = (PTR) &srel;
5199
5200 /* We have to write the addend into the object file, since
5201 standard a.out relocs are in place. It would be more
5202 reliable if we had the current contents of the file here,
5203 rather than assuming zeroes, but we can't read the file since
5204 it was opened using bfd_openw. */
5205 if (pr->addend != 0)
5206 {
5207 bfd_size_type size;
5208 bfd_reloc_status_type r;
5209 bfd_byte *buf;
5210 boolean ok;
5211
5212 size = bfd_get_reloc_size (howto);
e85e8bfe 5213 buf = (bfd_byte *) bfd_zmalloc (size);
ec099b4b
ILT		 5214 if (buf == (bfd_byte *) NULL)
5215 {
5216 bfd_set_error (bfd_error_no_memory);
5217 return false;
5218 }
34e9ffbc 5219 r = MY_relocate_contents (howto, finfo->output_bfd,
ec099b4b
ILT		 5220 pr->addend, buf);
5221 switch (r)
5222 {
5223 case bfd_reloc_ok:
5224 break;
5225 default:
5226 case bfd_reloc_outofrange:
5227 abort ();
5228 case bfd_reloc_overflow:
5229 if (! ((*finfo->info->callbacks->reloc_overflow)
5230 (finfo->info,
5231 (p->type == bfd_section_reloc_link_order
5232 ? bfd_section_name (finfo->output_bfd,
5233 pr->u.section)
5234 : pr->u.name),
5235 howto->name, pr->addend, (bfd *) NULL,
5236 (asection *) NULL, (bfd_vma) 0)))
5237 {
5238 free (buf);
5239 return false;
5240 }
5241 break;
5242 }
5243 ok = bfd_set_section_contents (finfo->output_bfd, o,
5244 (PTR) buf,
5245 (file_ptr) p->offset,
5246 size);
5247 free (buf);
5248 if (! ok)
5249 return false;
5250 }
5251 }
5252 else
5253 {
5254 PUT_WORD (finfo->output_bfd, p->offset, erel.r_address);
5255
5256 if (finfo->output_bfd->xvec->header_byteorder_big_p)
5257 {
5258 erel.r_index[0] = r_index >> 16;
5259 erel.r_index[1] = r_index >> 8;
5260 erel.r_index[2] = r_index;
5261 erel.r_type[0] =
5262 ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0)
5263 | (howto->type << RELOC_EXT_BITS_TYPE_SH_BIG));
5264 }
5265 else
5266 {
5267 erel.r_index[2] = r_index >> 16;
5268 erel.r_index[1] = r_index >> 8;
5269 erel.r_index[0] = r_index;
5270 erel.r_type[0] =
5271 (r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0)
5272 | (howto->type << RELOC_EXT_BITS_TYPE_SH_LITTLE);
5273 }
5274
5275 PUT_WORD (finfo->output_bfd, pr->addend, erel.r_addend);
5276
5277 rel_ptr = (PTR) &erel;
5278 }
5279
5280 if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0
5281 || (bfd_write (rel_ptr, (bfd_size_type) 1,
5282 obj_reloc_entry_size (finfo->output_bfd),
5283 finfo->output_bfd)
5284 != obj_reloc_entry_size (finfo->output_bfd)))
5285 return false;
5286
5287 *reloff_ptr += obj_reloc_entry_size (finfo->output_bfd);
5288
5289 /* Assert that the relocs have not run into the symbols, and that n
5290 the text relocs have not run into the data relocs. */
5291 BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd)
5292 && (reloff_ptr != &finfo->treloff
5293 || (*reloff_ptr
5294 <= obj_datasec (finfo->output_bfd)->rel_filepos)));
5295
5296 return true;
5297}
GDB Binutils - Deliverables
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