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fix typo
[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
7ac84736 499#ifdef USE_MMAP
4fe6d901 500 bfd_init_window (&obj_aout_sym_window (abfd));
4fe6d901 501 bfd_init_window (&obj_aout_string_window (abfd));
7ac84736
KR		 502#endif
503 obj_aout_external_syms (abfd) = NULL;
504 obj_aout_external_strings (abfd) = NULL;
728472f1
ILT		 505 obj_aout_sym_hashes (abfd) = NULL;
506
ec6b18c4
ILT		 507 if (! NAME(aout,make_sections) (abfd))
508 return NULL;
7ed4093a 509
6db82ea7
SC		 510 obj_datasec (abfd)->_raw_size = execp->a_data;
511 obj_bsssec (abfd)->_raw_size = execp->a_bss;
7ed4093a 512
0ee75d02 513 obj_textsec (abfd)->flags =
11676adc 514 (execp->a_trsize != 0
0ee75d02
ILT		 515 ? (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_RELOC)
516 : (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS));
517 obj_datasec (abfd)->flags =
11676adc 518 (execp->a_drsize != 0
0ee75d02
ILT		 519 ? (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS | SEC_RELOC)
520 : (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS));
7ed4093a
SC		 521 obj_bsssec (abfd)->flags = SEC_ALLOC;
522
523#ifdef THIS_IS_ONLY_DOCUMENTATION
98d43107
JG		 524 /* The common code can't fill in these things because they depend
525 on either the start address of the text segment, the rounding
9783e04a 526 up of virtual addresses between segments, or the starting file
98d43107
JG		 527 position of the text segment -- all of which varies among different
528 versions of a.out. */
529
c188b0be 530 /* Call back to the format-dependent code to fill in the rest of the
7ed4093a
SC		 531 fields and do any further cleanup. Things that should be filled
532 in by the callback: */
533
534 struct exec *execp = exec_hdr (abfd);
535
98d43107 536 obj_textsec (abfd)->size = N_TXTSIZE(*execp);
6db82ea7 537 obj_textsec (abfd)->raw_size = N_TXTSIZE(*execp);
98d43107
JG		 538 /* data and bss are already filled in since they're so standard */
539
7ed4093a 540 /* The virtual memory addresses of the sections */
7ed4093a 541 obj_textsec (abfd)->vma = N_TXTADDR(*execp);
98d43107
JG		 542 obj_datasec (abfd)->vma = N_DATADDR(*execp);
543 obj_bsssec (abfd)->vma = N_BSSADDR(*execp);
7ed4093a
SC		 544
545 /* The file offsets of the sections */
546 obj_textsec (abfd)->filepos = N_TXTOFF(*execp);
547 obj_datasec (abfd)->filepos = N_DATOFF(*execp);
548
549 /* The file offsets of the relocation info */
550 obj_textsec (abfd)->rel_filepos = N_TRELOFF(*execp);
551 obj_datasec (abfd)->rel_filepos = N_DRELOFF(*execp);
552
553 /* The file offsets of the string table and symbol table. */
554 obj_str_filepos (abfd) = N_STROFF (*execp);
555 obj_sym_filepos (abfd) = N_SYMOFF (*execp);
556
7ed4093a
SC		 557 /* Determine the architecture and machine type of the object file. */
558 switch (N_MACHTYPE (*exec_hdr (abfd))) {
559 default:
560 abfd->obj_arch = bfd_arch_obscure;
561 break;
562 }
563
34e9ffbc 564 adata(abfd)->page_size = TARGET_PAGE_SIZE;
7b02b4ed
JG		 565 adata(abfd)->segment_size = SEGMENT_SIZE;
566 adata(abfd)->exec_bytes_size = EXEC_BYTES_SIZE;
567
7ed4093a
SC		 568 return abfd->xvec;
569
570 /* The architecture is encoded in various ways in various a.out variants,
571 or is not encoded at all in some of them. The relocation size depends
572 on the architecture and the a.out variant. Finally, the return value
573 is the bfd_target vector in use. If an error occurs, return zero and
574 set bfd_error to the appropriate error code.
c188b0be 575
7ed4093a
SC		 576 Formats such as b.out, which have additional fields in the a.out
577 header, should cope with them in this callback as well. */
578#endif /* DOCUMENTATION */
579
e6e265ce
JG		 580 result = (*callback_to_real_object_p)(abfd);
581
582 /* Now that the segment addresses have been worked out, take a better
583 guess at whether the file is executable. If the entry point
584 is within the text segment, assume it is. (This makes files
585 executable even if their entry point address is 0, as long as
6c97aedf 586 their text starts at zero.). */
e6e265ce 587 if ((execp->a_entry >= obj_textsec(abfd)->vma) &&
6db82ea7 588 (execp->a_entry < obj_textsec(abfd)->vma + obj_textsec(abfd)->_raw_size))
e6e265ce 589 abfd->flags |= EXEC_P;
6c97aedf
ILT		 590#ifdef STAT_FOR_EXEC
591 else
592 {
593 struct stat stat_buf;
594
595 /* The original heuristic doesn't work in some important cases.
596 The a.out file has no information about the text start
597 address. For files (like kernels) linked to non-standard
598 addresses (ld -Ttext nnn) the entry point may not be between
599 the default text start (obj_textsec(abfd)->vma) and
600 (obj_textsec(abfd)->vma) + text size. This is not just a mach
601 issue. Many kernels are loaded at non standard addresses. */
602 if (abfd->iostream
603 && (fstat(fileno((FILE *) (abfd->iostream)), &stat_buf) == 0)
604 && ((stat_buf.st_mode & 0111) != 0))
605 abfd->flags |= EXEC_P;
606 }
607#endif /* STAT_FOR_EXEC */
608
214f8f23
KR		 609 if (result)
610 {
1f29e30b 611#if 0 /* These should be set correctly anyways. */
214f8f23
KR		 612 abfd->sections = obj_textsec (abfd);
613 obj_textsec (abfd)->next = obj_datasec (abfd);
614 obj_datasec (abfd)->next = obj_bsssec (abfd);
1f29e30b 615#endif
214f8f23
KR		 616 }
617 else
618 {
619 free (rawptr);
620 abfd->tdata.aout_data = oldrawptr;
621 }
e6e265ce 622 return result;
7ed4093a
SC		 623}
624
4e41b5aa
SC		 625/*
626FUNCTION
c188b0be 627 aout_@var{size}_mkobject
6f715d66 628
fa2b89f1 629SYNOPSIS
c188b0be
DM		 630 boolean aout_@var{size}_mkobject, (bfd *abfd);
631
632DESCRIPTION
633 Initialize BFD @var{abfd} for use with a.out files.
6f715d66 634*/
7ed4093a
SC		 635
636boolean
8eb5d4be
JK		 637NAME(aout,mkobject) (abfd)
638 bfd *abfd;
7ed4093a 639{
6db82ea7 640 struct aout_data_struct *rawptr;
7ed4093a 641
68241b2b 642 bfd_set_error (bfd_error_system_call);
7ed4093a
SC		 643
644 /* Use an intermediate variable for clarity */
2e235c93 645 rawptr = (struct aout_data_struct *)bfd_zalloc (abfd, sizeof (struct aout_data_struct ));
c188b0be 646
7ed4093a 647 if (rawptr == NULL) {
68241b2b 648 bfd_set_error (bfd_error_no_memory);
7ed4093a
SC		 649 return false;
650 }
c188b0be 651
6db82ea7 652 abfd->tdata.aout_data = rawptr;
7ed4093a 653 exec_hdr (abfd) = &(rawptr->e);
c188b0be 654
7ed4093a
SC		 655 obj_textsec (abfd) = (asection *)NULL;
656 obj_datasec (abfd) = (asection *)NULL;
657 obj_bsssec (abfd) = (asection *)NULL;
c188b0be 658
7ed4093a
SC		 659 return true;
660}
661
6f715d66 662
4e41b5aa
SC		 663/*
664FUNCTION
c188b0be
DM		 665 aout_@var{size}_machine_type
666
667SYNOPSIS
668 enum machine_type aout_@var{size}_machine_type
669 (enum bfd_architecture arch,
670 unsigned long machine));
6f715d66 671
4e41b5aa
SC		 672DESCRIPTION
673 Keep track of machine architecture and machine type for
c188b0be
DM		 674 a.out's. Return the <<machine_type>> for a particular
675 architecture and machine, or <<M_UNKNOWN>> if that exact architecture
676 and machine can't be represented in a.out format.
7ed4093a 677
4e41b5aa 678 If the architecture is understood, machine type 0 (default)
c188b0be 679 is always understood.
6f715d66 680*/
7ed4093a
SC		 681
682enum machine_type
9ae74960 683NAME(aout,machine_type) (arch, machine, unknown)
8eb5d4be
JK		 684 enum bfd_architecture arch;
685 unsigned long machine;
9ae74960 686 boolean *unknown;
7ed4093a
SC		 687{
688 enum machine_type arch_flags;
c188b0be 689
7ed4093a 690 arch_flags = M_UNKNOWN;
9ae74960 691 *unknown = true;
c188b0be 692
7ed4093a
SC		 693 switch (arch) {
694 case bfd_arch_sparc:
ae115e51
ILT		 695 if (machine == 0
696 || machine == bfd_mach_sparc
697 || machine == bfd_mach_sparc64)
698 arch_flags = M_SPARC;
7ed4093a 699 break;
c188b0be 700
7ed4093a
SC		 701 case bfd_arch_m68k:
702 switch (machine) {
703 case 0: arch_flags = M_68010; break;
9ae74960 704 case 68000: arch_flags = M_UNKNOWN; *unknown = false; break;
7ed4093a
SC		 705 case 68010: arch_flags = M_68010; break;
706 case 68020: arch_flags = M_68020; break;
707 default: arch_flags = M_UNKNOWN; break;
708 }
709 break;
c188b0be 710
7ed4093a
SC		 711 case bfd_arch_i386:
712 if (machine == 0) arch_flags = M_386;
713 break;
c188b0be 714
7ed4093a
SC		 715 case bfd_arch_a29k:
716 if (machine == 0) arch_flags = M_29K;
717 break;
c188b0be 718
204ba9e3
ILT		 719 case bfd_arch_arm:
720 if (machine == 0) arch_flags = M_ARM;
721 break;
722
5cd3dcff
KR		 723 case bfd_arch_mips:
724 switch (machine) {
725 case 0:
726 case 2000:
727 case 3000: arch_flags = M_MIPS1; break;
943fbd5b 728 case 4000: /* mips3 */
5cd3dcff 729 case 4400:
943fbd5b
KR		 730 case 8000: /* mips4 */
731 /* real mips2: */
5cd3dcff
KR		 732 case 6000: arch_flags = M_MIPS2; break;
733 default: arch_flags = M_UNKNOWN; break;
734 }
735 break;
736
f42fe159
ILT		 737 case bfd_arch_ns32k:
738 switch (machine) {
739 case 0: arch_flags = M_NS32532; break;
740 case 32032: arch_flags = M_NS32032; break;
741 case 32532: arch_flags = M_NS32532; break;
742 default: arch_flags = M_UNKNOWN; break;
743 }
744 break;
745
82b1edf7
KR		 746 case bfd_arch_vax:
747 *unknown = false;
748 break;
749
750 /* start-sanitize-rce */
751 case bfd_arch_rce:
752 arch_flags = M_RCE;
753 break;
754 /* end-sanitize-rce */
755
7ed4093a
SC		 756 default:
757 arch_flags = M_UNKNOWN;
7ed4093a 758 }
9ae74960
ILT		 759
760 if (arch_flags != M_UNKNOWN)
761 *unknown = false;
762
7ed4093a
SC		 763 return arch_flags;
764}
765
9e2dad8e 766
4e41b5aa
SC		 767/*
768FUNCTION
c188b0be 769 aout_@var{size}_set_arch_mach
6f715d66 770
fa2b89f1 771SYNOPSIS
c188b0be 772 boolean aout_@var{size}_set_arch_mach,
6f715d66 773 (bfd *,
c188b0be 774 enum bfd_architecture arch,
6f715d66 775 unsigned long machine));
c188b0be
DM		 776
777DESCRIPTION
778 Set the architecture and the machine of the BFD @var{abfd} to the
779 values @var{arch} and @var{machine}. Verify that @var{abfd}'s format
780 can support the architecture required.
6f715d66
SC		 781*/
782
7ed4093a 783boolean
8eb5d4be
JK		 784NAME(aout,set_arch_mach) (abfd, arch, machine)
785 bfd *abfd;
786 enum bfd_architecture arch;
787 unsigned long machine;
7ed4093a 788{
2e235c93
ILT		 789 if (! bfd_default_set_arch_mach (abfd, arch, machine))
790 return false;
791
9ae74960
ILT		 792 if (arch != bfd_arch_unknown)
793 {
794 boolean unknown;
795
796 NAME(aout,machine_type) (arch, machine, &unknown);
797 if (unknown)
798 return false;
799 }
ce07dd7c 800
214f8f23
KR		 801 /* Determine the size of a relocation entry */
802 switch (arch) {
803 case bfd_arch_sparc:
804 case bfd_arch_a29k:
5cd3dcff 805 case bfd_arch_mips:
214f8f23
KR		 806 obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE;
807 break;
808 default:
809 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
810 break;
811 }
812
2768b3f7 813 return (*aout_backend_info(abfd)->set_sizes) (abfd);
7ed4093a 814}
7ed4093a 815
4c3721d5
ILT		 816static void
817adjust_o_magic (abfd, execp)
818 bfd *abfd;
819 struct internal_exec *execp;
820{
821 file_ptr pos = adata (abfd).exec_bytes_size;
822 bfd_vma vma = 0;
823 int pad = 0;
824
825 /* Text. */
826 obj_textsec(abfd)->filepos = pos;
74942465
ILT		 827 if (!obj_textsec(abfd)->user_set_vma)
828 obj_textsec(abfd)->vma = vma;
829 else
830 vma = obj_textsec(abfd)->vma;
831
4c3721d5
ILT		 832 pos += obj_textsec(abfd)->_raw_size;
833 vma += obj_textsec(abfd)->_raw_size;
834
835 /* Data. */
836 if (!obj_datasec(abfd)->user_set_vma)
837 {
838#if 0 /* ?? Does alignment in the file image really matter? */
839 pad = align_power (vma, obj_datasec(abfd)->alignment_power) - vma;
840#endif
841 obj_textsec(abfd)->_raw_size += pad;
842 pos += pad;
843 vma += pad;
844 obj_datasec(abfd)->vma = vma;
845 }
82b1edf7
KR		 846 else
847 vma = obj_datasec(abfd)->vma;
4c3721d5
ILT		 848 obj_datasec(abfd)->filepos = pos;
849 pos += obj_datasec(abfd)->_raw_size;
850 vma += obj_datasec(abfd)->_raw_size;
851
852 /* BSS. */
853 if (!obj_bsssec(abfd)->user_set_vma)
854 {
855#if 0
856 pad = align_power (vma, obj_bsssec(abfd)->alignment_power) - vma;
857#endif
858 obj_datasec(abfd)->_raw_size += pad;
859 pos += pad;
860 vma += pad;
861 obj_bsssec(abfd)->vma = vma;
862 }
f4945271
ILT		 863 else
864 {
865 /* The VMA of the .bss section is set by the the VMA of the
866 .data section plus the size of the .data section. We may
867 need to add padding bytes to make this true. */
868 pad = obj_bsssec (abfd)->vma - vma;
869 if (pad > 0)
870 {
871 obj_datasec (abfd)->_raw_size += pad;
872 pos += pad;
873 }
874 }
4c3721d5
ILT		 875 obj_bsssec(abfd)->filepos = pos;
876
877 /* Fix up the exec header. */
878 execp->a_text = obj_textsec(abfd)->_raw_size;
879 execp->a_data = obj_datasec(abfd)->_raw_size;
880 execp->a_bss = obj_bsssec(abfd)->_raw_size;
881 N_SET_MAGIC (*execp, OMAGIC);
882}
883
884static void
885adjust_z_magic (abfd, execp)
886 bfd *abfd;
887 struct internal_exec *execp;
888{
889 bfd_size_type data_pad, text_pad;
890 file_ptr text_end;
891 CONST struct aout_backend_data *abdp;
892 int ztih; /* Nonzero if text includes exec header. */
4c3721d5
ILT		 893
894 abdp = aout_backend_info (abfd);
895
896 /* Text. */
0630aba5
ILT		 897 ztih = (abdp != NULL
898 && (abdp->text_includes_header
899 || obj_aout_subformat (abfd) == q_magic_format));
4c3721d5
ILT		 900 obj_textsec(abfd)->filepos = (ztih
901 ? adata(abfd).exec_bytes_size
0630aba5 902 : adata(abfd).zmagic_disk_block_size);
4c3721d5 903 if (! obj_textsec(abfd)->user_set_vma)
e1f99f60
ILT		 904 {
905 /* ?? Do we really need to check for relocs here? */
906 obj_textsec(abfd)->vma = ((abfd->flags & HAS_RELOC)
907 ? 0
908 : (ztih
909 ? (abdp->default_text_vma
910 + adata(abfd).exec_bytes_size)
911 : abdp->default_text_vma));
912 text_pad = 0;
913 }
914 else
915 {
916 /* The .text section is being loaded at an unusual address. We
917 may need to pad it such that the .data section starts at a page
918 boundary. */
919 if (ztih)
920 text_pad = ((obj_textsec (abfd)->filepos - obj_textsec (abfd)->vma)
921 & (adata (abfd).page_size - 1));
922 else
923 text_pad = ((- obj_textsec (abfd)->vma)
924 & (adata (abfd).page_size - 1));
925 }
926
4c3721d5 927 /* Find start of data. */
0630aba5
ILT		 928 if (ztih)
929 {
930 text_end = obj_textsec (abfd)->filepos + obj_textsec (abfd)->_raw_size;
e1f99f60 931 text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end;
0630aba5
ILT		 932 }
933 else
934 {
935 /* Note that if page_size == zmagic_disk_block_size, then
936 filepos == page_size, and this case is the same as the ztih
937 case. */
938 text_end = obj_textsec (abfd)->_raw_size;
e1f99f60 939 text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end;
0630aba5
ILT		 940 text_end += obj_textsec (abfd)->filepos;
941 }
4c3721d5
ILT		 942 obj_textsec(abfd)->_raw_size += text_pad;
943 text_end += text_pad;
944
945 /* Data. */
946 if (!obj_datasec(abfd)->user_set_vma)
947 {
948 bfd_vma vma;
949 vma = obj_textsec(abfd)->vma + obj_textsec(abfd)->_raw_size;
950 obj_datasec(abfd)->vma = BFD_ALIGN (vma, adata(abfd).segment_size);
951 }
4c3721d5
ILT		 952 if (abdp && abdp->zmagic_mapped_contiguous)
953 {
954 text_pad = (obj_datasec(abfd)->vma
955 - obj_textsec(abfd)->vma
956 - obj_textsec(abfd)->_raw_size);
957 obj_textsec(abfd)->_raw_size += text_pad;
958 }
959 obj_datasec(abfd)->filepos = (obj_textsec(abfd)->filepos
960 + obj_textsec(abfd)->_raw_size);
961
962 /* Fix up exec header while we're at it. */
963 execp->a_text = obj_textsec(abfd)->_raw_size;
964 if (ztih && (!abdp || (abdp && !abdp->exec_header_not_counted)))
965 execp->a_text += adata(abfd).exec_bytes_size;
f5419a59
ILT		 966 if (obj_aout_subformat (abfd) == q_magic_format)
967 N_SET_MAGIC (*execp, QMAGIC);
968 else
969 N_SET_MAGIC (*execp, ZMAGIC);
5330499f 970
4c3721d5 971 /* Spec says data section should be rounded up to page boundary. */
4c3721d5
ILT		 972 obj_datasec(abfd)->_raw_size
973 = align_power (obj_datasec(abfd)->_raw_size,
974 obj_bsssec(abfd)->alignment_power);
975 execp->a_data = BFD_ALIGN (obj_datasec(abfd)->_raw_size,
976 adata(abfd).page_size);
977 data_pad = execp->a_data - obj_datasec(abfd)->_raw_size;
978
979 /* BSS. */
980 if (!obj_bsssec(abfd)->user_set_vma)
981 obj_bsssec(abfd)->vma = (obj_datasec(abfd)->vma
982 + obj_datasec(abfd)->_raw_size);
5330499f
DM		 983 /* If the BSS immediately follows the data section and extra space
984 in the page is left after the data section, fudge data
985 in the header so that the bss section looks smaller by that
986 amount. We'll start the bss section there, and lie to the OS.
987 (Note that a linker script, as well as the above assignment,
988 could have explicitly set the BSS vma to immediately follow
989 the data section.) */
990 if (align_power (obj_bsssec(abfd)->vma, obj_bsssec(abfd)->alignment_power)
991 == obj_datasec(abfd)->vma + obj_datasec(abfd)->_raw_size)
992 execp->a_bss = (data_pad > obj_bsssec(abfd)->_raw_size) ? 0 :
993 obj_bsssec(abfd)->_raw_size - data_pad;
994 else
995 execp->a_bss = obj_bsssec(abfd)->_raw_size;
4c3721d5
ILT		 996}
997
998static void
999adjust_n_magic (abfd, execp)
1000 bfd *abfd;
1001 struct internal_exec *execp;
1002{
1003 file_ptr pos = adata(abfd).exec_bytes_size;
1004 bfd_vma vma = 0;
1005 int pad;
1006
1007 /* Text. */
1008 obj_textsec(abfd)->filepos = pos;
1009 if (!obj_textsec(abfd)->user_set_vma)
1010 obj_textsec(abfd)->vma = vma;
1011 else
1012 vma = obj_textsec(abfd)->vma;
1013 pos += obj_textsec(abfd)->_raw_size;
1014 vma += obj_textsec(abfd)->_raw_size;
1015
1016 /* Data. */
1017 obj_datasec(abfd)->filepos = pos;
1018 if (!obj_datasec(abfd)->user_set_vma)
1019 obj_datasec(abfd)->vma = BFD_ALIGN (vma, adata(abfd).segment_size);
1020 vma = obj_datasec(abfd)->vma;
1021
1022 /* Since BSS follows data immediately, see if it needs alignment. */
1023 vma += obj_datasec(abfd)->_raw_size;
1024 pad = align_power (vma, obj_bsssec(abfd)->alignment_power) - vma;
1025 obj_datasec(abfd)->_raw_size += pad;
1026 pos += obj_datasec(abfd)->_raw_size;
1027
1028 /* BSS. */
1029 if (!obj_bsssec(abfd)->user_set_vma)
1030 obj_bsssec(abfd)->vma = vma;
1031 else
1032 vma = obj_bsssec(abfd)->vma;
1033
1034 /* Fix up exec header. */
1035 execp->a_text = obj_textsec(abfd)->_raw_size;
1036 execp->a_data = obj_datasec(abfd)->_raw_size;
1037 execp->a_bss = obj_bsssec(abfd)->_raw_size;
1038 N_SET_MAGIC (*execp, NMAGIC);
1039}
1040
ce07dd7c 1041boolean
8eb5d4be
JK		 1042NAME(aout,adjust_sizes_and_vmas) (abfd, text_size, text_end)
1043 bfd *abfd;
1044 bfd_size_type *text_size;
1045 file_ptr *text_end;
ce07dd7c
KR		 1046{
1047 struct internal_exec *execp = exec_hdr (abfd);
4c3721d5 1048
ec6b18c4
ILT		 1049 if (! NAME(aout,make_sections) (abfd))
1050 return false;
1051
f5419a59
ILT		 1052 if (adata(abfd).magic != undecided_magic)
1053 return true;
4c3721d5 1054
c188b0be 1055 obj_textsec(abfd)->_raw_size =
ce07dd7c
KR		 1056 align_power(obj_textsec(abfd)->_raw_size,
1057 obj_textsec(abfd)->alignment_power);
1058
1059 *text_size = obj_textsec (abfd)->_raw_size;
1060 /* Rule (heuristic) for when to pad to a new page. Note that there
4c3721d5
ILT		 1061 are (at least) two ways demand-paged (ZMAGIC) files have been
1062 handled. Most Berkeley-based systems start the text segment at
34e9ffbc 1063 (TARGET_PAGE_SIZE). However, newer versions of SUNOS start the text
4c3721d5
ILT		 1064 segment right after the exec header; the latter is counted in the
1065 text segment size, and is paged in by the kernel with the rest of
1066 the text. */
ce07dd7c
KR		 1067
1068 /* This perhaps isn't the right way to do this, but made it simpler for me
1069 to understand enough to implement it. Better would probably be to go
1070 right from BFD flags to alignment/positioning characteristics. But the
1071 old code was sloppy enough about handling the flags, and had enough
1072 other magic, that it was a little hard for me to understand. I think
1073 I understand it better now, but I haven't time to do the cleanup this
1074 minute. */
4c3721d5
ILT		 1075
1076 if (abfd->flags & D_PAGED)
1077 /* Whether or not WP_TEXT is set -- let D_PAGED override. */
4c3721d5
ILT		 1078 adata(abfd).magic = z_magic;
1079 else if (abfd->flags & WP_TEXT)
1080 adata(abfd).magic = n_magic;
1081 else
1082 adata(abfd).magic = o_magic;
ce07dd7c
KR		 1083
1084#ifdef BFD_AOUT_DEBUG /* requires gcc2 */
1085#if __GNUC__ >= 2
1086 fprintf (stderr, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n",
1087 ({ char *str;
1088 switch (adata(abfd).magic) {
1089 case n_magic: str = "NMAGIC"; break;
1090 case o_magic: str = "OMAGIC"; break;
1091 case z_magic: str = "ZMAGIC"; break;
1092 default: abort ();
1093 }
1094 str;
1095 }),
4c3721d5
ILT		 1096 obj_textsec(abfd)->vma, obj_textsec(abfd)->_raw_size,
1097 obj_textsec(abfd)->alignment_power,
1098 obj_datasec(abfd)->vma, obj_datasec(abfd)->_raw_size,
1099 obj_datasec(abfd)->alignment_power,
1100 obj_bsssec(abfd)->vma, obj_bsssec(abfd)->_raw_size,
1101 obj_bsssec(abfd)->alignment_power);
ce07dd7c
KR		 1102#endif
1103#endif
1104
1105 switch (adata(abfd).magic)
1106 {
1107 case o_magic:
4c3721d5 1108 adjust_o_magic (abfd, execp);
ce07dd7c
KR		 1109 break;
1110 case z_magic:
4c3721d5 1111 adjust_z_magic (abfd, execp);
ce07dd7c
KR		 1112 break;
1113 case n_magic:
4c3721d5 1114 adjust_n_magic (abfd, execp);
ce07dd7c
KR		 1115 break;
1116 default:
1117 abort ();
1118 }
4c3721d5 1119
ce07dd7c
KR		 1120#ifdef BFD_AOUT_DEBUG
1121 fprintf (stderr, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n",
4c3721d5
ILT		 1122 obj_textsec(abfd)->vma, obj_textsec(abfd)->_raw_size,
1123 obj_textsec(abfd)->filepos,
1124 obj_datasec(abfd)->vma, obj_datasec(abfd)->_raw_size,
1125 obj_datasec(abfd)->filepos,
ce07dd7c
KR		 1126 obj_bsssec(abfd)->vma, obj_bsssec(abfd)->_raw_size);
1127#endif
4c3721d5 1128
d047d16a 1129 return true;
ce07dd7c
KR		 1130}
1131
4e41b5aa
SC		 1132/*
1133FUNCTION
c188b0be 1134 aout_@var{size}_new_section_hook
4e41b5aa 1135
fa2b89f1 1136SYNOPSIS
c188b0be 1137 boolean aout_@var{size}_new_section_hook,
9e2dad8e
JG		 1138 (bfd *abfd,
1139 asection *newsect));
c188b0be
DM		 1140
1141DESCRIPTION
1142 Called by the BFD in response to a @code{bfd_make_section}
1143 request.
6f715d66 1144*/
7ed4093a 1145boolean
8eb5d4be
JK		 1146NAME(aout,new_section_hook) (abfd, newsect)
1147 bfd *abfd;
1148 asection *newsect;
7ed4093a 1149{
6db82ea7
SC		 1150 /* align to double at least */
1151 newsect->alignment_power = bfd_get_arch_info(abfd)->section_align_power;
3f7607af 1152
c188b0be
DM		 1153
1154 if (bfd_get_format (abfd) == bfd_object)
6db82ea7
SC		 1155 {
1156 if (obj_textsec(abfd) == NULL && !strcmp(newsect->name, ".text")) {
1157 obj_textsec(abfd)= newsect;
e48f985c 1158 newsect->target_index = N_TEXT;
6db82ea7
SC		 1159 return true;
1160 }
c188b0be 1161
6db82ea7
SC		 1162 if (obj_datasec(abfd) == NULL && !strcmp(newsect->name, ".data")) {
1163 obj_datasec(abfd) = newsect;
e48f985c 1164 newsect->target_index = N_DATA;
6db82ea7
SC		 1165 return true;
1166 }
c188b0be 1167
6db82ea7
SC		 1168 if (obj_bsssec(abfd) == NULL && !strcmp(newsect->name, ".bss")) {
1169 obj_bsssec(abfd) = newsect;
e48f985c 1170 newsect->target_index = N_BSS;
6db82ea7
SC		 1171 return true;
1172 }
1173
1174 }
c188b0be 1175
6db82ea7
SC		 1176 /* We allow more than three sections internally */
1177 return true;
7ed4093a
SC		 1178}
1179
1180boolean
8eb5d4be
JK		 1181NAME(aout,set_section_contents) (abfd, section, location, offset, count)
1182 bfd *abfd;
1183 sec_ptr section;
1184 PTR location;
1185 file_ptr offset;
1186 bfd_size_type count;
7ed4093a 1187{
7b02b4ed 1188 file_ptr text_end;
7b02b4ed 1189 bfd_size_type text_size;
ce07dd7c 1190
773033d2
ILT		 1191 if (! abfd->output_has_begun)
1192 {
1193 if (! NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end))
1194 return false;
1195 }
12e7087f 1196
773033d2
ILT		 1197 if (section == obj_bsssec (abfd))
1198 {
1199 bfd_set_error (bfd_error_no_contents);
1200 return false;
1201 }
1202
1203 if (section != obj_textsec (abfd)
1204 && section != obj_datasec (abfd))
1205 {
1206 bfd_set_error (bfd_error_nonrepresentable_section);
1207 return false;
1208 }
1209
1210 if (count != 0)
1211 {
1212 if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0
1213 || bfd_write (location, 1, count, abfd) != count)
1214 return false;
1215 }
c188b0be 1216
7ed4093a
SC		 1217 return true;
1218}
1219\f
5c8444f8
ILT		 1220/* Read the external symbols from an a.out file. */
1221
1222static boolean
1223aout_get_external_symbols (abfd)
1224 bfd *abfd;
1225{
1226 if (obj_aout_external_syms (abfd) == (struct external_nlist *) NULL)
1227 {
1228 bfd_size_type count;
1229 struct external_nlist *syms;
1230
1231 count = exec_hdr (abfd)->a_syms / EXTERNAL_NLIST_SIZE;
1232
7ac84736 1233#ifdef USE_MMAP
4fe6d901
KR		 1234 if (bfd_get_file_window (abfd,
1235 obj_sym_filepos (abfd), exec_hdr (abfd)->a_syms,
0bb8ff19 1236 &obj_aout_sym_window (abfd), true) == false)
4fe6d901
KR		 1237 return false;
1238 syms = (struct external_nlist *) obj_aout_sym_window (abfd).data;
7ac84736
KR		 1239#else
1240 /* We allocate using malloc to make the values easy to free
1241 later on. If we put them on the obstack it might not be
1242 possible to free them. */
1243 syms = ((struct external_nlist *)
1244 malloc ((size_t) count * EXTERNAL_NLIST_SIZE));
1245 if (syms == (struct external_nlist *) NULL && count != 0)
1246 {
1247 bfd_set_error (bfd_error_no_memory);
1248 return false;
1249 }
1250
1251 if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
1252 || (bfd_read (syms, 1, exec_hdr (abfd)->a_syms, abfd)
1253 != exec_hdr (abfd)->a_syms))
1254 {
1255 free (syms);
1256 return false;
1257 }
1258#endif
5c8444f8
ILT		 1259
1260 obj_aout_external_syms (abfd) = syms;
1261 obj_aout_external_sym_count (abfd) = count;
1262 }
1263
4f019d04
ILT		 1264 if (obj_aout_external_strings (abfd) == NULL
1265 && exec_hdr (abfd)->a_syms != 0)
5c8444f8
ILT		 1266 {
1267 unsigned char string_chars[BYTES_IN_WORD];
1268 bfd_size_type stringsize;
1269 char *strings;
1270
1271 /* Get the size of the strings. */
1272 if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0
1273 || (bfd_read ((PTR) string_chars, BYTES_IN_WORD, 1, abfd)
1274 != BYTES_IN_WORD))
1275 return false;
1276 stringsize = GET_WORD (abfd, string_chars);
1277
7ac84736 1278#ifdef USE_MMAP
4fe6d901 1279 if (bfd_get_file_window (abfd, obj_str_filepos (abfd), stringsize,
0bb8ff19 1280 &obj_aout_string_window (abfd), true) == false)
4fe6d901
KR		 1281 return false;
1282 strings = (char *) obj_aout_string_window (abfd).data;
7ac84736
KR		 1283#else
1284 strings = (char *) malloc ((size_t) stringsize + 1);
1285 if (strings == NULL)
1286 {
1287 bfd_set_error (bfd_error_no_memory);
1288 return false;
1289 }
1290
1291 /* Skip space for the string count in the buffer for convenience
1292 when using indexes. */
1293 if (bfd_read (strings + BYTES_IN_WORD, 1, stringsize - BYTES_IN_WORD,
1294 abfd)
1295 != stringsize - BYTES_IN_WORD)
1296 {
1297 free (strings);
1298 return false;
1299 }
1300#endif
5c8444f8 1301
1afd2380
ILT		 1302 /* Ensure that a zero index yields an empty string. */
1303 strings[0] = '\0';
1304
7ac84736 1305 strings[stringsize - 1] = 0;
5c8444f8
ILT		 1306
1307 obj_aout_external_strings (abfd) = strings;
1308 obj_aout_external_string_size (abfd) = stringsize;
1309 }
1310
1311 return true;
1312}
1313
4298e311
ILT		 1314/* Translate an a.out symbol into a BFD symbol. The desc, other, type
1315 and symbol->value fields of CACHE_PTR will be set from the a.out
1316 nlist structure. This function is responsible for setting
1317 symbol->flags and symbol->section, and adjusting symbol->value. */
c188b0be 1318
9783e04a 1319static boolean
4298e311
ILT		 1320translate_from_native_sym_flags (abfd, cache_ptr)
1321 bfd *abfd;
1322 aout_symbol_type *cache_ptr;
9e2dad8e 1323{
4298e311
ILT		 1324 flagword visible;
1325
1326 if ((cache_ptr->type & N_STAB) != 0
1327 || cache_ptr->type == N_FN)
1328 {
1329 asection *sec;
1330
1331 /* This is a debugging symbol. */
1332
1333 cache_ptr->symbol.flags = BSF_DEBUGGING;
1334
1335 /* Work out the symbol section. */
1336 switch (cache_ptr->type & N_TYPE)
1337 {
1338 case N_TEXT:
1339 case N_FN:
1340 sec = obj_textsec (abfd);
1341 break;
1342 case N_DATA:
1343 sec = obj_datasec (abfd);
1344 break;
1345 case N_BSS:
1346 sec = obj_bsssec (abfd);
1347 break;
1348 default:
1349 case N_ABS:
4587b578 1350 sec = bfd_abs_section_ptr;
4298e311
ILT		 1351 break;
1352 }
1353
1354 cache_ptr->symbol.section = sec;
1355 cache_ptr->symbol.value -= sec->vma;
1356
1357 return true;
1358 }
1359
1360 /* Get the default visibility. This does not apply to all types, so
1361 we just hold it in a local variable to use if wanted. */
1362 if ((cache_ptr->type & N_EXT) == 0)
1363 visible = BSF_LOCAL;
1364 else
1365 visible = BSF_GLOBAL;
1366
1367 switch (cache_ptr->type)
6db82ea7 1368 {
4298e311
ILT		 1369 default:
1370 case N_ABS: case N_ABS | N_EXT:
4587b578 1371 cache_ptr->symbol.section = bfd_abs_section_ptr;
4298e311
ILT		 1372 cache_ptr->symbol.flags = visible;
1373 break;
1374
1375 case N_UNDF | N_EXT:
1376 if (cache_ptr->symbol.value != 0)
1377 {
1378 /* This is a common symbol. */
1379 cache_ptr->symbol.flags = BSF_GLOBAL;
4587b578 1380 cache_ptr->symbol.section = bfd_com_section_ptr;
4298e311
ILT		 1381 }
1382 else
1383 {
1384 cache_ptr->symbol.flags = 0;
4587b578 1385 cache_ptr->symbol.section = bfd_und_section_ptr;
4298e311
ILT		 1386 }
1387 break;
1388
1389 case N_TEXT: case N_TEXT | N_EXT:
1390 cache_ptr->symbol.section = obj_textsec (abfd);
1391 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1392 cache_ptr->symbol.flags = visible;
1393 break;
1394
2cd086e3
ILT		 1395 /* N_SETV symbols used to represent set vectors placed in the
1396 data section. They are no longer generated. Theoretically,
1397 it was possible to extract the entries and combine them with
1398 new ones, although I don't know if that was ever actually
1399 done. Unless that feature is restored, treat them as data
1400 symbols. */
1401 case N_SETV: case N_SETV | N_EXT:
4298e311
ILT		 1402 case N_DATA: case N_DATA | N_EXT:
1403 cache_ptr->symbol.section = obj_datasec (abfd);
1404 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1405 cache_ptr->symbol.flags = visible;
1406 break;
1407
1408 case N_BSS: case N_BSS | N_EXT:
1409 cache_ptr->symbol.section = obj_bsssec (abfd);
1410 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1411 cache_ptr->symbol.flags = visible;
1412 break;
1413
964affdc
DM		 1414 case N_SETA: case N_SETA | N_EXT:
1415 case N_SETT: case N_SETT | N_EXT:
1416 case N_SETD: case N_SETD | N_EXT:
1417 case N_SETB: case N_SETB | N_EXT:
ebd24135 1418 {
ebd24135 1419 asection *section;
4298e311 1420 arelent_chain *reloc;
ebd24135 1421 asection *into_section;
9783e04a 1422
4298e311
ILT		 1423 /* This is a set symbol. The name of the symbol is the name
1424 of the set (e.g., __CTOR_LIST__). The value of the symbol
1425 is the value to add to the set. We create a section with
1426 the same name as the symbol, and add a reloc to insert the
1427 appropriate value into the section.
1428
1429 This action is actually obsolete; it used to make the
1430 linker do the right thing, but the linker no longer uses
1431 this function. */
1432
1433 section = bfd_get_section_by_name (abfd, cache_ptr->symbol.name);
1434 if (section == NULL)
1435 {
1436 char *copy;
1437
1438 copy = bfd_alloc (abfd, strlen (cache_ptr->symbol.name) + 1);
1439 if (copy == NULL)
1440 {
1441 bfd_set_error (bfd_error_no_memory);
1442 return false;
1443 }
1444
1445 strcpy (copy, cache_ptr->symbol.name);
1446 section = bfd_make_section (abfd, copy);
1447 if (section == NULL)
1448 return false;
1449 }
1450
1451 reloc = (arelent_chain *) bfd_alloc (abfd, sizeof (arelent_chain));
1452 if (reloc == NULL)
9783e04a 1453 {
68241b2b 1454 bfd_set_error (bfd_error_no_memory);
9783e04a
DM		 1455 return false;
1456 }
1457
4298e311
ILT		 1458 /* Build a relocation entry for the constructor. */
1459 switch (cache_ptr->type & N_TYPE)
a99c3d70 1460 {
4298e311 1461 case N_SETA:
4587b578 1462 into_section = bfd_abs_section_ptr;
ebd24135
ILT		 1463 cache_ptr->type = N_ABS;
1464 break;
4298e311
ILT		 1465 case N_SETT:
1466 into_section = obj_textsec (abfd);
ebd24135
ILT		 1467 cache_ptr->type = N_TEXT;
1468 break;
4298e311
ILT		 1469 case N_SETD:
1470 into_section = obj_datasec (abfd);
ebd24135
ILT		 1471 cache_ptr->type = N_DATA;
1472 break;
4298e311
ILT		 1473 case N_SETB:
1474 into_section = obj_bsssec (abfd);
ebd24135
ILT		 1475 cache_ptr->type = N_BSS;
1476 break;
ebd24135 1477 }
88dfcd68 1478
4298e311
ILT		 1479 /* Build a relocation pointing into the constructor section
1480 pointing at the symbol in the set vector specified. */
ebd24135 1481 reloc->relent.addend = cache_ptr->symbol.value;
4298e311 1482 cache_ptr->symbol.section = into_section;
ebd24135 1483 reloc->relent.sym_ptr_ptr = into_section->symbol_ptr_ptr;
6db82ea7 1484
4298e311
ILT		 1485 /* We modify the symbol to belong to a section depending upon
1486 the name of the symbol, and add to the size of the section
1487 to contain a pointer to the symbol. Build a reloc entry to
1488 relocate to this symbol attached to this section. */
a8a916c8 1489 section->flags = SEC_CONSTRUCTOR | SEC_RELOC;
a99c3d70 1490
ebd24135
ILT		 1491 section->reloc_count++;
1492 section->alignment_power = 2;
a99c3d70 1493
ebd24135
ILT		 1494 reloc->next = section->constructor_chain;
1495 section->constructor_chain = reloc;
1496 reloc->relent.address = section->_raw_size;
4298e311
ILT		 1497 section->_raw_size += BYTES_IN_WORD;
1498
f42fe159 1499 reloc->relent.howto = CTOR_TABLE_RELOC_HOWTO(abfd);
a99c3d70 1500
ebd24135
ILT		 1501 cache_ptr->symbol.flags |= BSF_CONSTRUCTOR;
1502 }
1503 break;
0c205af2 1504
4298e311
ILT		 1505 case N_WARNING:
1506 /* This symbol is the text of a warning message. The next
1507 symbol is the symbol to associate the warning with. If a
1508 reference is made to that symbol, a warning is issued. */
1509 cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_WARNING;
4587b578 1510 cache_ptr->symbol.section = bfd_abs_section_ptr;
4298e311 1511 break;
ebd24135 1512
4298e311
ILT		 1513 case N_INDR: case N_INDR | N_EXT:
1514 /* An indirect symbol. This consists of two symbols in a row.
1515 The first symbol is the name of the indirection. The second
1516 symbol is the name of the target. A reference to the first
1517 symbol becomes a reference to the second. */
1518 cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_INDIRECT | visible;
4587b578 1519 cache_ptr->symbol.section = bfd_ind_section_ptr;
4298e311
ILT		 1520 break;
1521
1522 case N_WEAKU:
4587b578 1523 cache_ptr->symbol.section = bfd_und_section_ptr;
4298e311
ILT		 1524 cache_ptr->symbol.flags = BSF_WEAK;
1525 break;
1526
1527 case N_WEAKA:
4587b578 1528 cache_ptr->symbol.section = bfd_abs_section_ptr;
4298e311
ILT		 1529 cache_ptr->symbol.flags = BSF_WEAK;
1530 break;
1531
1532 case N_WEAKT:
1533 cache_ptr->symbol.section = obj_textsec (abfd);
1534 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1535 cache_ptr->symbol.flags = BSF_WEAK;
1536 break;
1537
1538 case N_WEAKD:
1539 cache_ptr->symbol.section = obj_datasec (abfd);
1540 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1541 cache_ptr->symbol.flags = BSF_WEAK;
1542 break;
1543
1544 case N_WEAKB:
1545 cache_ptr->symbol.section = obj_bsssec (abfd);
1546 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1547 cache_ptr->symbol.flags = BSF_WEAK;
1548 break;
a99c3d70 1549 }
4298e311 1550
9783e04a 1551 return true;
7ed4093a
SC		 1552}
1553
4298e311 1554/* Set the fields of SYM_POINTER according to CACHE_PTR. */
6db82ea7 1555
4c3721d5 1556static boolean
4298e311 1557translate_to_native_sym_flags (abfd, cache_ptr, sym_pointer)
8eb5d4be 1558 bfd *abfd;
4298e311
ILT		 1559 asymbol *cache_ptr;
1560 struct external_nlist *sym_pointer;
7ed4093a
SC		 1561{
1562 bfd_vma value = cache_ptr->value;
943fbd5b
KR		 1563 asection *sec;
1564 bfd_vma off;
7ed4093a 1565
4298e311
ILT		 1566 /* Mask out any existing type bits in case copying from one section
1567 to another. */
10dea9ed 1568 sym_pointer->e_type[0] &= ~N_TYPE;
a99c3d70 1569
943fbd5b
KR		 1570 sec = bfd_get_section (cache_ptr);
1571 off = 0;
1572
1573 if (sec == NULL)
4298e311 1574 {
943fbd5b
KR		 1575 /* This case occurs, e.g., for the *DEBUG* section of a COFF
1576 file. */
4298e311
ILT		 1577 bfd_set_error (bfd_error_nonrepresentable_section);
1578 return false;
1579 }
943fbd5b
KR		 1580
1581 if (sec->output_section != NULL)
1582 {
1583 off = sec->output_offset;
1584 sec = sec->output_section;
1585 }
1586
1587 if (bfd_is_abs_section (sec))
1588 sym_pointer->e_type[0] |= N_ABS;
1589 else if (sec == obj_textsec (abfd))
1590 sym_pointer->e_type[0] |= N_TEXT;
1591 else if (sec == obj_datasec (abfd))
1592 sym_pointer->e_type[0] |= N_DATA;
1593 else if (sec == obj_bsssec (abfd))
1594 sym_pointer->e_type[0] |= N_BSS;
1595 else if (bfd_is_und_section (sec))
4587b578 1596 sym_pointer->e_type[0] = N_UNDF | N_EXT;
943fbd5b 1597 else if (bfd_is_ind_section (sec))
4587b578 1598 sym_pointer->e_type[0] = N_INDR;
943fbd5b 1599 else if (bfd_is_com_section (sec))
4298e311
ILT		 1600 sym_pointer->e_type[0] = N_UNDF | N_EXT;
1601 else
1602 {
1603 bfd_set_error (bfd_error_nonrepresentable_section);
1604 return false;
1605 }
6f56c941 1606
6db82ea7 1607 /* Turn the symbol from section relative to absolute again */
943fbd5b 1608 value += sec->vma + off;
c188b0be 1609
4298e311 1610 if ((cache_ptr->flags & BSF_WARNING) != 0)
d7e34f67 1611 sym_pointer->e_type[0] = N_WARNING;
c188b0be 1612
4298e311
ILT		 1613 if ((cache_ptr->flags & BSF_DEBUGGING) != 0)
1614 sym_pointer->e_type[0] = ((aout_symbol_type *) cache_ptr)->type;
1615 else if ((cache_ptr->flags & BSF_GLOBAL) != 0)
3caa6924 1616 sym_pointer->e_type[0] |= N_EXT;
4298e311
ILT		 1617
1618 if ((cache_ptr->flags & BSF_CONSTRUCTOR) != 0)
1619 {
1620 int type = ((aout_symbol_type *) cache_ptr)->type;
1621 switch (type)
1622 {
1623 case N_ABS: type = N_SETA; break;
1624 case N_TEXT: type = N_SETT; break;
1625 case N_DATA: type = N_SETD; break;
1626 case N_BSS: type = N_SETB; break;
1627 }
1628 sym_pointer->e_type[0] = type;
1629 }
1630
1631 if ((cache_ptr->flags & BSF_WEAK) != 0)
1632 {
1633 int type;
1634
1635 switch (sym_pointer->e_type[0] & N_TYPE)
1636 {
1637 default:
1638 case N_ABS: type = N_WEAKA; break;
1639 case N_TEXT: type = N_WEAKT; break;
1640 case N_DATA: type = N_WEAKD; break;
1641 case N_BSS: type = N_WEAKB; break;
1642 case N_UNDF: type = N_WEAKU; break;
1643 }
1644 sym_pointer->e_type[0] = type;
1645 }
6db82ea7 1646
7ed4093a 1647 PUT_WORD(abfd, value, sym_pointer->e_value);
4c3721d5
ILT		 1648
1649 return true;
7ed4093a
SC		 1650}
1651\f
1652/* Native-level interface to symbols. */
1653
7ed4093a 1654asymbol *
8eb5d4be
JK		 1655NAME(aout,make_empty_symbol) (abfd)
1656 bfd *abfd;
9e2dad8e
JG		 1657{
1658 aout_symbol_type *new =
1659 (aout_symbol_type *)bfd_zalloc (abfd, sizeof (aout_symbol_type));
9783e04a
DM		 1660 if (!new)
1661 {
68241b2b 1662 bfd_set_error (bfd_error_no_memory);
9783e04a
DM		 1663 return NULL;
1664 }
9e2dad8e 1665 new->symbol.the_bfd = abfd;
fa2b89f1 1666
9e2dad8e
JG		 1667 return &new->symbol;
1668}
7ed4093a 1669
0ee75d02
ILT		 1670/* Translate a set of internal symbols into external symbols. */
1671
fa77c704
ILT		 1672boolean
1673NAME(aout,translate_symbol_table) (abfd, in, ext, count, str, strsize, dynamic)
0ee75d02
ILT		 1674 bfd *abfd;
1675 aout_symbol_type *in;
1676 struct external_nlist *ext;
1677 bfd_size_type count;
1678 char *str;
1679 bfd_size_type strsize;
1680 boolean dynamic;
1681{
1682 struct external_nlist *ext_end;
1683
1684 ext_end = ext + count;
1685 for (; ext < ext_end; ext++, in++)
1686 {
1687 bfd_vma x;
1688
1689 x = GET_WORD (abfd, ext->e_strx);
1690 in->symbol.the_bfd = abfd;
ca1c6bec
ILT		 1691
1692 /* For the normal symbols, the zero index points at the number
1693 of bytes in the string table but is to be interpreted as the
1694 null string. For the dynamic symbols, the number of bytes in
1695 the string table is stored in the __DYNAMIC structure and the
1696 zero index points at an actual string. */
1697 if (x == 0 && ! dynamic)
1698 in->symbol.name = "";
1699 else if (x < strsize)
0ee75d02
ILT		 1700 in->symbol.name = str + x;
1701 else
1702 return false;
1703
1704 in->symbol.value = GET_SWORD (abfd, ext->e_value);
1705 in->desc = bfd_h_get_16 (abfd, ext->e_desc);
1706 in->other = bfd_h_get_8 (abfd, ext->e_other);
1707 in->type = bfd_h_get_8 (abfd, ext->e_type);
74942465 1708 in->symbol.udata.p = NULL;
0ee75d02 1709
4298e311 1710 if (! translate_from_native_sym_flags (abfd, in))
9783e04a 1711 return false;
0ee75d02
ILT		 1712
1713 if (dynamic)
1714 in->symbol.flags |= BSF_DYNAMIC;
1715 }
1716
1717 return true;
1718}
1719
1720/* We read the symbols into a buffer, which is discarded when this
1721 function exits. We read the strings into a buffer large enough to
1722 hold them all plus all the cached symbol entries. */
1723
7ed4093a 1724boolean
8eb5d4be
JK		 1725NAME(aout,slurp_symbol_table) (abfd)
1726 bfd *abfd;
9e2dad8e 1727{
5c8444f8 1728 struct external_nlist *old_external_syms;
9e2dad8e 1729 aout_symbol_type *cached;
5c8444f8 1730 size_t cached_size;
0f213cc2 1731
9e2dad8e 1732 /* If there's no work to be done, don't do any */
5c8444f8
ILT		 1733 if (obj_aout_symbols (abfd) != (aout_symbol_type *) NULL)
1734 return true;
1735
1736 old_external_syms = obj_aout_external_syms (abfd);
1737
1738 if (! aout_get_external_symbols (abfd))
1739 return false;
1740
fa77c704 1741 cached_size = (obj_aout_external_sym_count (abfd)
5c8444f8
ILT		 1742 * sizeof (aout_symbol_type));
1743 cached = (aout_symbol_type *) malloc (cached_size);
74942465 1744 if (cached == NULL && cached_size != 0)
9783e04a 1745 {
68241b2b 1746 bfd_set_error (bfd_error_no_memory);
9783e04a
DM		 1747 return false;
1748 }
74942465
ILT		 1749 if (cached_size != 0)
1750 memset (cached, 0, cached_size);
5c8444f8
ILT		 1751
1752 /* Convert from external symbol information to internal. */
fa77c704
ILT		 1753 if (! (NAME(aout,translate_symbol_table)
1754 (abfd, cached,
1755 obj_aout_external_syms (abfd),
1756 obj_aout_external_sym_count (abfd),
1757 obj_aout_external_strings (abfd),
1758 obj_aout_external_string_size (abfd),
1759 false)))
0f213cc2 1760 {
5c8444f8 1761 free (cached);
0f213cc2
KR		 1762 return false;
1763 }
1764
fa77c704 1765 bfd_get_symcount (abfd) = obj_aout_external_sym_count (abfd);
0f213cc2 1766
5c8444f8 1767 obj_aout_symbols (abfd) = cached;
0f213cc2 1768
5c8444f8
ILT		 1769 /* It is very likely that anybody who calls this function will not
1770 want the external symbol information, so if it was allocated
1771 because of our call to aout_get_external_symbols, we free it up
1772 right away to save space. */
1773 if (old_external_syms == (struct external_nlist *) NULL
1774 && obj_aout_external_syms (abfd) != (struct external_nlist *) NULL)
1775 {
7ac84736 1776#ifdef USE_MMAP
4fe6d901 1777 bfd_free_window (&obj_aout_sym_window (abfd));
7ac84736
KR		 1778#else
1779 free (obj_aout_external_syms (abfd));
1780#endif
5c8444f8 1781 obj_aout_external_syms (abfd) = NULL;
0ee75d02 1782 }
0f213cc2 1783
9e2dad8e
JG		 1784 return true;
1785}
0f213cc2 1786\f
d17fc4c9
ILT		 1787/* We use a hash table when writing out symbols so that we only write
1788 out a particular string once. This helps particularly when the
1789 linker writes out stabs debugging entries, because each different
1790 contributing object file tends to have many duplicate stabs
1791 strings.
1792
d63d0479
ILT		 1793 This hash table code breaks dbx on SunOS 4.1.3, so we don't do it
1794 if BFD_TRADITIONAL_FORMAT is set. */
0f213cc2 1795
d17fc4c9 1796static bfd_size_type add_to_stringtab
1afd2380
ILT		 1797 PARAMS ((bfd *, struct bfd_strtab_hash *, const char *, boolean));
1798static boolean emit_stringtab PARAMS ((bfd *, struct bfd_strtab_hash *));
d17fc4c9
ILT		 1799
1800/* Get the index of a string in a strtab, adding it if it is not
1afd2380 1801 already present. */
d17fc4c9
ILT		 1802
1803static INLINE bfd_size_type
1804add_to_stringtab (abfd, tab, str, copy)
0f213cc2 1805 bfd *abfd;
1afd2380 1806 struct bfd_strtab_hash *tab;
d17fc4c9
ILT		 1807 const char *str;
1808 boolean copy;
0f213cc2 1809{
1afd2380 1810 boolean hash;
435b470e 1811 bfd_size_type index;
0f213cc2 1812
d17fc4c9 1813 /* An index of 0 always means the empty string. */
204ba9e3 1814 if (str == 0 || *str == '\0')
d17fc4c9 1815 return 0;
0f213cc2 1816
1afd2380
ILT		 1817 /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx
1818 doesn't understand a hashed string table. */
1819 hash = true;
1820 if ((abfd->flags & BFD_TRADITIONAL_FORMAT) != 0)
1821 hash = false;
0f213cc2 1822
435b470e
ILT		 1823 index = _bfd_stringtab_add (tab, str, hash, copy);
1824
1825 if (index != (bfd_size_type) -1)
1826 {
1827 /* Add BYTES_IN_WORD to the return value to account for the
1828 space taken up by the string table size. */
1829 index += BYTES_IN_WORD;
1830 }
1831
1832 return index;
0f213cc2
KR		 1833}
1834
d17fc4c9
ILT		 1835/* Write out a strtab. ABFD is already at the right location in the
1836 file. */
1837
29e626eb 1838static boolean
d17fc4c9
ILT		 1839emit_stringtab (abfd, tab)
1840 register bfd *abfd;
1afd2380 1841 struct bfd_strtab_hash *tab;
0f213cc2 1842{
d17fc4c9 1843 bfd_byte buffer[BYTES_IN_WORD];
0f213cc2 1844
1afd2380
ILT		 1845 /* The string table starts with the size. */
1846 PUT_WORD (abfd, _bfd_stringtab_size (tab) + BYTES_IN_WORD, buffer);
29e626eb
ILT		 1847 if (bfd_write ((PTR) buffer, 1, BYTES_IN_WORD, abfd) != BYTES_IN_WORD)
1848 return false;
0f213cc2 1849
1afd2380 1850 return _bfd_stringtab_emit (abfd, tab);
0f213cc2 1851}
d17fc4c9 1852\f
4c3721d5 1853boolean
8eb5d4be
JK		 1854NAME(aout,write_syms) (abfd)
1855 bfd *abfd;
0f213cc2
KR		 1856{
1857 unsigned int count ;
1858 asymbol **generic = bfd_get_outsymbols (abfd);
1afd2380 1859 struct bfd_strtab_hash *strtab;
0f213cc2 1860
1afd2380
ILT		 1861 strtab = _bfd_stringtab_init ();
1862 if (strtab == NULL)
d17fc4c9 1863 return false;
0f213cc2
KR		 1864
1865 for (count = 0; count < bfd_get_symcount (abfd); count++)
1866 {
7ed4093a 1867 asymbol *g = generic[count];
d17fc4c9 1868 bfd_size_type indx;
7ed4093a 1869 struct external_nlist nsp;
6db82ea7 1870
1afd2380 1871 indx = add_to_stringtab (abfd, strtab, g->name, false);
d17fc4c9
ILT		 1872 if (indx == (bfd_size_type) -1)
1873 goto error_return;
1874 PUT_WORD (abfd, indx, (bfd_byte *) nsp.e_strx);
6db82ea7 1875
0f213cc2
KR		 1876 if (bfd_asymbol_flavour(g) == abfd->xvec->flavour)
1877 {
1878 bfd_h_put_16(abfd, aout_symbol(g)->desc, nsp.e_desc);
1879 bfd_h_put_8(abfd, aout_symbol(g)->other, nsp.e_other);
1880 bfd_h_put_8(abfd, aout_symbol(g)->type, nsp.e_type);
1881 }
7ed4093a 1882 else
0f213cc2
KR		 1883 {
1884 bfd_h_put_16(abfd,0, nsp.e_desc);
1885 bfd_h_put_8(abfd, 0, nsp.e_other);
1886 bfd_h_put_8(abfd, 0, nsp.e_type);
1887 }
7b02b4ed 1888
4298e311 1889 if (! translate_to_native_sym_flags (abfd, g, &nsp))
d17fc4c9 1890 goto error_return;
7b02b4ed 1891
4c3721d5
ILT		 1892 if (bfd_write((PTR)&nsp,1,EXTERNAL_NLIST_SIZE, abfd)
1893 != EXTERNAL_NLIST_SIZE)
d17fc4c9 1894 goto error_return;
7ed4093a 1895
ae115e51 1896 /* NB: `KEEPIT' currently overlays `udata.p', so set this only
0f213cc2
KR		 1897 here, at the end. */
1898 g->KEEPIT = count;
1899 }
7ed4093a 1900
1afd2380 1901 if (! emit_stringtab (abfd, strtab))
d17fc4c9
ILT		 1902 goto error_return;
1903
1afd2380 1904 _bfd_stringtab_free (strtab);
d17fc4c9
ILT		 1905
1906 return true;
1907
1908error_return:
1afd2380 1909 _bfd_stringtab_free (strtab);
d17fc4c9 1910 return false;
0f213cc2 1911}
7ed4093a 1912
0f213cc2 1913\f
326e32d7 1914long
8eb5d4be
JK		 1915NAME(aout,get_symtab) (abfd, location)
1916 bfd *abfd;
1917 asymbol **location;
3f7607af 1918{
7ed4093a
SC		 1919 unsigned int counter = 0;
1920 aout_symbol_type *symbase;
ce07dd7c 1921
326e32d7
ILT		 1922 if (!NAME(aout,slurp_symbol_table)(abfd))
1923 return -1;
ce07dd7c 1924
7ed4093a
SC		 1925 for (symbase = obj_aout_symbols(abfd); counter++ < bfd_get_symcount (abfd);)
1926 *(location++) = (asymbol *)( symbase++);
1927 *location++ =0;
ce07dd7c 1928 return bfd_get_symcount (abfd);
3f7607af 1929}
7ed4093a
SC		 1930
1931\f
1932/* Standard reloc stuff */
1933/* Output standard relocation information to a file in target byte order. */
1934
1935void
8eb5d4be
JK		 1936NAME(aout,swap_std_reloc_out) (abfd, g, natptr)
1937 bfd *abfd;
1938 arelent *g;
1939 struct reloc_std_external *natptr;
3f7607af 1940{
6db82ea7
SC		 1941 int r_index;
1942 asymbol *sym = *(g->sym_ptr_ptr);
1943 int r_extern;
1944 unsigned int r_length;
1945 int r_pcrel;
1946 int r_baserel, r_jmptable, r_relative;
6db82ea7 1947 asection *output_section = sym->section->output_section;
ce07dd7c 1948
6db82ea7 1949 PUT_WORD(abfd, g->address, natptr->r_address);
ce07dd7c 1950
6db82ea7
SC		 1951 r_length = g->howto->size ; /* Size as a power of two */
1952 r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */
c188b0be
DM		 1953 /* XXX This relies on relocs coming from a.out files. */
1954 r_baserel = (g->howto->type & 8) != 0;
cb9461ff
JK		 1955 r_jmptable = (g->howto->type & 16) != 0;
1956 r_relative = (g->howto->type & 32) != 0;
c188b0be 1957
728472f1
ILT		 1958#if 0
1959 /* For a standard reloc, the addend is in the object file. */
6db82ea7 1960 r_addend = g->addend + (*(g->sym_ptr_ptr))->section->output_section->vma;
728472f1 1961#endif
c188b0be 1962
6db82ea7
SC		 1963 /* name was clobbered by aout_write_syms to be symbol index */
1964
c188b0be 1965 /* If this relocation is relative to a symbol then set the
2768b3f7
SC		 1966 r_index to the symbols index, and the r_extern bit.
1967
1968 Absolute symbols can come in in two ways, either as an offset
1969 from the abs section, or as a symbol which has an abs value.
1970 check for that here
1971 */
c188b0be 1972
2768b3f7 1973
382f2a3d 1974 if (bfd_is_com_section (output_section)
4587b578
ILT		 1975 || bfd_is_abs_section (output_section)
1976 || bfd_is_und_section (output_section))
ce07dd7c 1977 {
4587b578 1978 if (bfd_abs_section_ptr->symbol == sym)
2768b3f7
SC		 1979 {
1980 /* Whoops, looked like an abs symbol, but is really an offset
1981 from the abs section */
1982 r_index = 0;
1983 r_extern = 0;
1984 }
c188b0be 1985 else
2768b3f7
SC		 1986 {
1987 /* Fill in symbol */
1988 r_extern = 1;
ae115e51 1989 r_index = (*(g->sym_ptr_ptr))->KEEPIT;
c188b0be 1990
2768b3f7 1991 }
ce07dd7c 1992 }
c188b0be 1993 else
ce07dd7c
KR		 1994 {
1995 /* Just an ordinary section */
1996 r_extern = 0;
c188b0be 1997 r_index = output_section->target_index;
ce07dd7c
KR		 1998 }
1999
6db82ea7
SC		 2000 /* now the fun stuff */
2001 if (abfd->xvec->header_byteorder_big_p != false) {
7ed4093a
SC		 2002 natptr->r_index[0] = r_index >> 16;
2003 natptr->r_index[1] = r_index >> 8;
2004 natptr->r_index[2] = r_index;
2005 natptr->r_type[0] =
6db82ea7
SC		 2006 (r_extern? RELOC_STD_BITS_EXTERN_BIG: 0)
2007 | (r_pcrel? RELOC_STD_BITS_PCREL_BIG: 0)
2008 | (r_baserel? RELOC_STD_BITS_BASEREL_BIG: 0)
2009 | (r_jmptable? RELOC_STD_BITS_JMPTABLE_BIG: 0)
2010 | (r_relative? RELOC_STD_BITS_RELATIVE_BIG: 0)
2011 | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG);
7ed4093a 2012 } else {
6db82ea7
SC		 2013 natptr->r_index[2] = r_index >> 16;
2014 natptr->r_index[1] = r_index >> 8;
2015 natptr->r_index[0] = r_index;
2016 natptr->r_type[0] =
2017 (r_extern? RELOC_STD_BITS_EXTERN_LITTLE: 0)
7ed4093a 2018 | (r_pcrel? RELOC_STD_BITS_PCREL_LITTLE: 0)
6db82ea7
SC		 2019 | (r_baserel? RELOC_STD_BITS_BASEREL_LITTLE: 0)
2020 | (r_jmptable? RELOC_STD_BITS_JMPTABLE_LITTLE: 0)
2021 | (r_relative? RELOC_STD_BITS_RELATIVE_LITTLE: 0)
2022 | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE);
2023 }
3f7607af 2024}
7ed4093a
SC		 2025
2026
2027/* Extended stuff */
2028/* Output extended relocation information to a file in target byte order. */
2029
2030void
8eb5d4be
JK		 2031NAME(aout,swap_ext_reloc_out) (abfd, g, natptr)
2032 bfd *abfd;
2033 arelent *g;
2034 register struct reloc_ext_external *natptr;
3f7607af 2035{
6db82ea7
SC		 2036 int r_index;
2037 int r_extern;
2038 unsigned int r_type;
2039 unsigned int r_addend;
c188b0be 2040 asymbol *sym = *(g->sym_ptr_ptr);
6db82ea7 2041 asection *output_section = sym->section->output_section;
c188b0be 2042
6db82ea7 2043 PUT_WORD (abfd, g->address, natptr->r_address);
c188b0be 2044
6db82ea7 2045 r_type = (unsigned int) g->howto->type;
7ed4093a 2046
ae115e51
ILT		 2047 r_addend = g->addend;
2048 if ((sym->flags & BSF_SECTION_SYM) != 0)
2049 r_addend += (*(g->sym_ptr_ptr))->section->output_section->vma;
7ed4093a 2050
c188b0be 2051 /* If this relocation is relative to a symbol then set the
2768b3f7
SC		 2052 r_index to the symbols index, and the r_extern bit.
2053
2054 Absolute symbols can come in in two ways, either as an offset
2055 from the abs section, or as a symbol which has an abs value.
c188b0be
DM		 2056 check for that here. */
2057
ae115e51 2058 if (bfd_is_abs_section (bfd_get_section (sym)))
2768b3f7 2059 {
2768b3f7 2060 r_extern = 0;
ae115e51
ILT		 2061 r_index = 0;
2062 }
2063 else if ((sym->flags & BSF_SECTION_SYM) == 0)
2768b3f7 2064 {
f69e888e
ILT		 2065 if (bfd_is_und_section (bfd_get_section (sym))
2066 || (sym->flags & BSF_GLOBAL) != 0)
2067 r_extern = 1;
2068 else
2069 r_extern = 0;
ae115e51 2070 r_index = (*(g->sym_ptr_ptr))->KEEPIT;
2768b3f7 2071 }
c188b0be 2072 else
ae115e51
ILT		 2073 {
2074 /* Just an ordinary section */
2075 r_extern = 0;
2076 r_index = output_section->target_index;
2077 }
c188b0be 2078
7ed4093a
SC		 2079 /* now the fun stuff */
2080 if (abfd->xvec->header_byteorder_big_p != false) {
2768b3f7
SC		 2081 natptr->r_index[0] = r_index >> 16;
2082 natptr->r_index[1] = r_index >> 8;
2083 natptr->r_index[2] = r_index;
2084 natptr->r_type[0] =
c188b0be
DM		 2085 ((r_extern? RELOC_EXT_BITS_EXTERN_BIG: 0)
2086 | (r_type << RELOC_EXT_BITS_TYPE_SH_BIG));
2768b3f7
SC		 2087 } else {
2088 natptr->r_index[2] = r_index >> 16;
2089 natptr->r_index[1] = r_index >> 8;
2090 natptr->r_index[0] = r_index;
2091 natptr->r_type[0] =
2092 (r_extern? RELOC_EXT_BITS_EXTERN_LITTLE: 0)
2093 | (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE);
2094 }
7ed4093a
SC		 2095
2096 PUT_WORD (abfd, r_addend, natptr->r_addend);
2097}
2098
6db82ea7
SC		 2099/* BFD deals internally with all things based from the section they're
2100 in. so, something in 10 bytes into a text section with a base of
c188b0be 2101 50 would have a symbol (.text+10) and know .text vma was 50.
6db82ea7
SC		 2102
2103 Aout keeps all it's symbols based from zero, so the symbol would
2104 contain 60. This macro subs the base of each section from the value
2105 to give the true offset from the section */
2106
2107
7ed4093a
SC		 2108#define MOVE_ADDRESS(ad) \
2109 if (r_extern) { \
6db82ea7
SC		 2110 /* undefined symbol */ \
2111 cache_ptr->sym_ptr_ptr = symbols + r_index; \
2112 cache_ptr->addend = ad; \
2113 } else { \
2114 /* defined, section relative. replace symbol with pointer to \
2115 symbol which points to section */ \
7ed4093a
SC		 2116 switch (r_index) { \
2117 case N_TEXT: \
2118 case N_TEXT | N_EXT: \
6db82ea7 2119 cache_ptr->sym_ptr_ptr = obj_textsec(abfd)->symbol_ptr_ptr; \
7ed4093a
SC		 2120 cache_ptr->addend = ad - su->textsec->vma; \
2121 break; \
2122 case N_DATA: \
2123 case N_DATA | N_EXT: \
6db82ea7 2124 cache_ptr->sym_ptr_ptr = obj_datasec(abfd)->symbol_ptr_ptr; \
7ed4093a
SC		 2125 cache_ptr->addend = ad - su->datasec->vma; \
2126 break; \
2127 case N_BSS: \
2128 case N_BSS | N_EXT: \
6db82ea7 2129 cache_ptr->sym_ptr_ptr = obj_bsssec(abfd)->symbol_ptr_ptr; \
7ed4093a
SC		 2130 cache_ptr->addend = ad - su->bsssec->vma; \
2131 break; \
6db82ea7 2132 default: \
7ed4093a
SC		 2133 case N_ABS: \
2134 case N_ABS | N_EXT: \
4587b578 2135 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \
6db82ea7 2136 cache_ptr->addend = ad; \
7ed4093a
SC		 2137 break; \
2138 } \
2139 } \
2140
2141void
2f675427 2142NAME(aout,swap_ext_reloc_in) (abfd, bytes, cache_ptr, symbols, symcount)
8eb5d4be
JK		 2143 bfd *abfd;
2144 struct reloc_ext_external *bytes;
2145 arelent *cache_ptr;
2146 asymbol **symbols;
2f675427 2147 bfd_size_type symcount;
7ed4093a 2148{
ae115e51 2149 unsigned int r_index;
7ed4093a
SC		 2150 int r_extern;
2151 unsigned int r_type;
6db82ea7 2152 struct aoutdata *su = &(abfd->tdata.aout_data->a);
7ed4093a
SC		 2153
2154 cache_ptr->address = (GET_SWORD (abfd, bytes->r_address));
2155
2156 /* now the fun stuff */
2157 if (abfd->xvec->header_byteorder_big_p != false) {
382f2a3d
ILT		 2158 r_index = (bytes->r_index[0] << 16)
2159 | (bytes->r_index[1] << 8)
2160 | bytes->r_index[2];
7ed4093a
SC		 2161 r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG));
2162 r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
2163 >> RELOC_EXT_BITS_TYPE_SH_BIG;
2164 } else {
382f2a3d
ILT		 2165 r_index = (bytes->r_index[2] << 16)
2166 | (bytes->r_index[1] << 8)
2167 | bytes->r_index[0];
7ed4093a
SC		 2168 r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE));
2169 r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
2170 >> RELOC_EXT_BITS_TYPE_SH_LITTLE;
2171 }
2172
2f675427
ILT		 2173 cache_ptr->howto = howto_table_ext + r_type;
2174
2175 /* Base relative relocs are always against the symbol table,
2176 regardless of the setting of r_extern. r_extern just reflects
2177 whether the symbol the reloc is against is local or global. */
2178 if (r_type == RELOC_BASE10
2179 || r_type == RELOC_BASE13
2180 || r_type == RELOC_BASE22)
2181 r_extern = 1;
2182
2183 if (r_extern && r_index > symcount)
773033d2
ILT		 2184 {
2185 /* We could arrange to return an error, but it might be useful
2186 to see the file even if it is bad. */
2187 r_extern = 0;
2188 r_index = N_ABS;
2189 }
2190
6db82ea7 2191 MOVE_ADDRESS(GET_SWORD(abfd, bytes->r_addend));
7ed4093a
SC		 2192}
2193
2194void
2f675427 2195NAME(aout,swap_std_reloc_in) (abfd, bytes, cache_ptr, symbols, symcount)
8eb5d4be
JK		 2196 bfd *abfd;
2197 struct reloc_std_external *bytes;
2198 arelent *cache_ptr;
2199 asymbol **symbols;
2f675427 2200 bfd_size_type symcount;
7ed4093a 2201{
ae115e51 2202 unsigned int r_index;
7ed4093a
SC		 2203 int r_extern;
2204 unsigned int r_length;
2205 int r_pcrel;
2206 int r_baserel, r_jmptable, r_relative;
6db82ea7 2207 struct aoutdata *su = &(abfd->tdata.aout_data->a);
ae115e51 2208 unsigned int howto_idx;
7ed4093a 2209
34dd8ba3 2210 cache_ptr->address = bfd_h_get_32 (abfd, bytes->r_address);
7ed4093a
SC		 2211
2212 /* now the fun stuff */
2213 if (abfd->xvec->header_byteorder_big_p != false) {
382f2a3d
ILT		 2214 r_index = (bytes->r_index[0] << 16)
2215 | (bytes->r_index[1] << 8)
2216 | bytes->r_index[2];
7ed4093a
SC		 2217 r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
2218 r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
2219 r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_BIG));
2220 r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG));
2221 r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG));
c188b0be 2222 r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_BIG)
7ed4093a
SC		 2223 >> RELOC_STD_BITS_LENGTH_SH_BIG;
2224 } else {
382f2a3d
ILT		 2225 r_index = (bytes->r_index[2] << 16)
2226 | (bytes->r_index[1] << 8)
2227 | bytes->r_index[0];
7ed4093a
SC		 2228 r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
2229 r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
2230 r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE));
2231 r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE));
2232 r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE));
c188b0be 2233 r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE)
7ed4093a
SC		 2234 >> RELOC_STD_BITS_LENGTH_SH_LITTLE;
2235 }
2236
cb9461ff
JK		 2237 howto_idx = r_length + 4 * r_pcrel + 8 * r_baserel
2238 + 16 * r_jmptable + 32 * r_relative;
c188b0be
DM		 2239 BFD_ASSERT (howto_idx < TABLE_SIZE (howto_table_std));
2240 cache_ptr->howto = howto_table_std + howto_idx;
ae115e51 2241 BFD_ASSERT (cache_ptr->howto->type != (unsigned int) -1);
7ed4093a 2242
2f675427
ILT		 2243 /* Base relative relocs are always against the symbol table,
2244 regardless of the setting of r_extern. r_extern just reflects
2245 whether the symbol the reloc is against is local or global. */
2246 if (r_baserel)
2247 r_extern = 1;
2248
2249 if (r_extern && r_index > symcount)
773033d2
ILT		 2250 {
2251 /* We could arrange to return an error, but it might be useful
2252 to see the file even if it is bad. */
2253 r_extern = 0;
2254 r_index = N_ABS;
2255 }
2256
7ed4093a
SC		 2257 MOVE_ADDRESS(0);
2258}
2259
5c8444f8 2260/* Read and swap the relocs for a section. */
7ed4093a
SC		 2261
2262boolean
8eb5d4be
JK		 2263NAME(aout,slurp_reloc_table) (abfd, asect, symbols)
2264 bfd *abfd;
2265 sec_ptr asect;
2266 asymbol **symbols;
7ed4093a
SC		 2267{
2268 unsigned int count;
2269 bfd_size_type reloc_size;
2270 PTR relocs;
2271 arelent *reloc_cache;
2272 size_t each_size;
0ee75d02
ILT		 2273 unsigned int counter = 0;
2274 arelent *cache_ptr;
7ed4093a 2275
5c8444f8
ILT		 2276 if (asect->relocation)
2277 return true;
7ed4093a 2278
5c8444f8
ILT		 2279 if (asect->flags & SEC_CONSTRUCTOR)
2280 return true;
7ed4093a 2281
0ee75d02 2282 if (asect == obj_datasec (abfd))
7ed4093a 2283 reloc_size = exec_hdr(abfd)->a_drsize;
0ee75d02 2284 else if (asect == obj_textsec (abfd))
7ed4093a 2285 reloc_size = exec_hdr(abfd)->a_trsize;
f42fe159
ILT		 2286 else if (asect == obj_bsssec (abfd))
2287 reloc_size = 0;
0ee75d02
ILT		 2288 else
2289 {
68241b2b 2290 bfd_set_error (bfd_error_invalid_operation);
0ee75d02
ILT		 2291 return false;
2292 }
2293
5c8444f8
ILT		 2294 if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0)
2295 return false;
2296
7ed4093a
SC		 2297 each_size = obj_reloc_entry_size (abfd);
2298
2299 count = reloc_size / each_size;
2300
fa77c704 2301 reloc_cache = (arelent *) malloc ((size_t) (count * sizeof (arelent)));
5c8444f8 2302 if (reloc_cache == NULL && count != 0)
0ee75d02 2303 {
68241b2b 2304 bfd_set_error (bfd_error_no_memory);
0ee75d02
ILT		 2305 return false;
2306 }
fa77c704 2307 memset (reloc_cache, 0, count * sizeof (arelent));
7ed4093a 2308
3fe22b98 2309 relocs = malloc ((size_t) reloc_size);
5c8444f8 2310 if (relocs == NULL && reloc_size != 0)
0ee75d02 2311 {
5c8444f8
ILT		 2312 free (reloc_cache);
2313 bfd_set_error (bfd_error_no_memory);
2314 return false;
0ee75d02 2315 }
7ed4093a 2316
0ee75d02
ILT		 2317 if (bfd_read (relocs, 1, reloc_size, abfd) != reloc_size)
2318 {
5c8444f8
ILT		 2319 free (relocs);
2320 free (reloc_cache);
0ee75d02
ILT		 2321 return false;
2322 }
7ed4093a 2323
0ee75d02
ILT		 2324 cache_ptr = reloc_cache;
2325 if (each_size == RELOC_EXT_SIZE)
2326 {
2327 register struct reloc_ext_external *rptr =
2328 (struct reloc_ext_external *) relocs;
7ed4093a 2329
0ee75d02 2330 for (; counter < count; counter++, rptr++, cache_ptr++)
2f675427
ILT		 2331 NAME(aout,swap_ext_reloc_in) (abfd, rptr, cache_ptr, symbols,
2332 bfd_get_symcount (abfd));
7ed4093a 2333 }
0ee75d02
ILT		 2334 else
2335 {
5c8444f8
ILT		 2336 register struct reloc_std_external *rptr =
2337 (struct reloc_std_external *) relocs;
7ed4093a 2338
0ee75d02 2339 for (; counter < count; counter++, rptr++, cache_ptr++)
2f675427
ILT		 2340 MY_swap_std_reloc_in (abfd, rptr, cache_ptr, symbols,
2341 bfd_get_symcount (abfd));
7ed4093a
SC		 2342 }
2343
5c8444f8
ILT		 2344 free (relocs);
2345
7ed4093a 2346 asect->relocation = reloc_cache;
0ee75d02 2347 asect->reloc_count = cache_ptr - reloc_cache;
5c8444f8 2348
7ed4093a
SC		 2349 return true;
2350}
2351
7ed4093a
SC		 2352/* Write out a relocation section into an object file. */
2353
2354boolean
8eb5d4be
JK		 2355NAME(aout,squirt_out_relocs) (abfd, section)
2356 bfd *abfd;
2357 asection *section;
7ed4093a
SC		 2358{
2359 arelent **generic;
2360 unsigned char *native, *natptr;
2361 size_t each_size;
2362
2363 unsigned int count = section->reloc_count;
2364 size_t natsize;
2365
2366 if (count == 0) return true;
2367
2368 each_size = obj_reloc_entry_size (abfd);
2369 natsize = each_size * count;
2370 native = (unsigned char *) bfd_zalloc (abfd, natsize);
2371 if (!native) {
68241b2b 2372 bfd_set_error (bfd_error_no_memory);
7ed4093a
SC		 2373 return false;
2374 }
2375
2376 generic = section->orelocation;
2377
c188b0be 2378 if (each_size == RELOC_EXT_SIZE)
7ed4093a
SC		 2379 {
2380 for (natptr = native;
2381 count != 0;
2382 --count, natptr += each_size, ++generic)
2383 NAME(aout,swap_ext_reloc_out) (abfd, *generic, (struct reloc_ext_external *)natptr);
2384 }
c188b0be 2385 else
7ed4093a
SC		 2386 {
2387 for (natptr = native;
2388 count != 0;
2389 --count, natptr += each_size, ++generic)
f42fe159 2390 MY_swap_std_reloc_out(abfd, *generic, (struct reloc_std_external *)natptr);
7ed4093a
SC		 2391 }
2392
2393 if ( bfd_write ((PTR) native, 1, natsize, abfd) != natsize) {
2394 bfd_release(abfd, native);
2395 return false;
2396 }
2397 bfd_release (abfd, native);
2398
2399 return true;
2400}
2401
2402/* This is stupid. This function should be a boolean predicate */
326e32d7 2403long
8eb5d4be
JK		 2404NAME(aout,canonicalize_reloc) (abfd, section, relptr, symbols)
2405 bfd *abfd;
2406 sec_ptr section;
2407 arelent **relptr;
2408 asymbol **symbols;
7ed4093a
SC		 2409{
2410 arelent *tblptr = section->relocation;
2411 unsigned int count;
2412
4f019d04
ILT		 2413 if (section == obj_bsssec (abfd))
2414 {
2415 *relptr = NULL;
2416 return 0;
2417 }
2418
7ed4093a 2419 if (!(tblptr || NAME(aout,slurp_reloc_table)(abfd, section, symbols)))
326e32d7 2420 return -1;
7ed4093a
SC		 2421
2422 if (section->flags & SEC_CONSTRUCTOR) {
2423 arelent_chain *chain = section->constructor_chain;
2424 for (count = 0; count < section->reloc_count; count ++) {
2425 *relptr ++ = &chain->relent;
2426 chain = chain->next;
2427 }
2428 }
2429 else {
2430 tblptr = section->relocation;
7ed4093a 2431
c188b0be 2432 for (count = 0; count++ < section->reloc_count;)
7ed4093a
SC		 2433 {
2434 *relptr++ = tblptr++;
2435 }
2436 }
2437 *relptr = 0;
2438
2439 return section->reloc_count;
2440}
2441
326e32d7 2442long
8eb5d4be
JK		 2443NAME(aout,get_reloc_upper_bound) (abfd, asect)
2444 bfd *abfd;
2445 sec_ptr asect;
7ed4093a
SC		 2446{
2447 if (bfd_get_format (abfd) != bfd_object) {
68241b2b 2448 bfd_set_error (bfd_error_invalid_operation);
326e32d7 2449 return -1;
7ed4093a
SC		 2450 }
2451 if (asect->flags & SEC_CONSTRUCTOR) {
2452 return (sizeof (arelent *) * (asect->reloc_count+1));
2453 }
2454
7ed4093a 2455 if (asect == obj_datasec (abfd))
fa77c704
ILT		 2456 return (sizeof (arelent *)
2457 * ((exec_hdr(abfd)->a_drsize / obj_reloc_entry_size (abfd))
2458 + 1));
7ed4093a
SC		 2459
2460 if (asect == obj_textsec (abfd))
fa77c704
ILT		 2461 return (sizeof (arelent *)
2462 * ((exec_hdr(abfd)->a_trsize / obj_reloc_entry_size (abfd))
2463 + 1));
7ed4093a 2464
4f019d04
ILT		 2465 if (asect == obj_bsssec (abfd))
2466 return sizeof (arelent *);
2467
f42fe159
ILT		 2468 if (asect == obj_bsssec (abfd))
2469 return 0;
2470
68241b2b 2471 bfd_set_error (bfd_error_invalid_operation);
326e32d7 2472 return -1;
7ed4093a
SC		 2473}
2474
2475\f
326e32d7 2476long
8eb5d4be
JK		 2477NAME(aout,get_symtab_upper_bound) (abfd)
2478 bfd *abfd;
7ed4093a 2479{
326e32d7
ILT		 2480 if (!NAME(aout,slurp_symbol_table)(abfd))
2481 return -1;
7ed4093a
SC		 2482
2483 return (bfd_get_symcount (abfd)+1) * (sizeof (aout_symbol_type *));
2484}
728472f1
ILT		 2485
2486/*ARGSUSED*/
7ed4093a 2487 alent *
8eb5d4be
JK		 2488NAME(aout,get_lineno) (ignore_abfd, ignore_symbol)
2489 bfd *ignore_abfd;
2490 asymbol *ignore_symbol;
7ed4093a
SC		 2491{
2492return (alent *)NULL;
2493}
2494
728472f1 2495/*ARGSUSED*/
c188b0be 2496void
8eb5d4be
JK		 2497NAME(aout,get_symbol_info) (ignore_abfd, symbol, ret)
2498 bfd *ignore_abfd;
2499 asymbol *symbol;
2500 symbol_info *ret;
34dd8ba3
JG		 2501{
2502 bfd_symbol_info (symbol, ret);
2503
2504 if (ret->type == '?')
2505 {
2506 int type_code = aout_symbol(symbol)->type & 0xff;
2507 CONST char *stab_name = aout_stab_name(type_code);
2508 static char buf[10];
2509
2510 if (stab_name == NULL)
2511 {
2512 sprintf(buf, "(%d)", type_code);
2513 stab_name = buf;
2514 }
2515 ret->type = '-';
2516 ret->stab_other = (unsigned)(aout_symbol(symbol)->other & 0xff);
2517 ret->stab_desc = (unsigned)(aout_symbol(symbol)->desc & 0xffff);
2518 ret->stab_name = stab_name;
2519 }
2520}
7ed4093a 2521
728472f1 2522/*ARGSUSED*/
c188b0be 2523void
8eb5d4be
JK		 2524NAME(aout,print_symbol) (ignore_abfd, afile, symbol, how)
2525 bfd *ignore_abfd;
2526 PTR afile;
2527 asymbol *symbol;
2528 bfd_print_symbol_type how;
7ed4093a
SC		 2529{
2530 FILE *file = (FILE *)afile;
2531
2532 switch (how) {
9e2dad8e 2533 case bfd_print_symbol_name:
fb3be09b
JG		 2534 if (symbol->name)
2535 fprintf(file,"%s", symbol->name);
7ed4093a 2536 break;
9e2dad8e 2537 case bfd_print_symbol_more:
7ed4093a
SC		 2538 fprintf(file,"%4x %2x %2x",(unsigned)(aout_symbol(symbol)->desc & 0xffff),
2539 (unsigned)(aout_symbol(symbol)->other & 0xff),
2540 (unsigned)(aout_symbol(symbol)->type));
2541 break;
9e2dad8e 2542 case bfd_print_symbol_all:
7ed4093a 2543 {
6db82ea7
SC		 2544 CONST char *section_name = symbol->section->name;
2545
7ed4093a
SC		 2546
2547 bfd_print_symbol_vandf((PTR)file,symbol);
2548
fb3be09b 2549 fprintf(file," %-5s %04x %02x %02x",
7ed4093a
SC		 2550 section_name,
2551 (unsigned)(aout_symbol(symbol)->desc & 0xffff),
2552 (unsigned)(aout_symbol(symbol)->other & 0xff),
9e2dad8e 2553 (unsigned)(aout_symbol(symbol)->type & 0xff));
fb3be09b
JG		 2554 if (symbol->name)
2555 fprintf(file," %s", symbol->name);
7ed4093a
SC		 2556 }
2557 break;
2558 }
2559}
2560
c3246d9b
ILT		 2561/* If we don't have to allocate more than 1MB to hold the generic
2562 symbols, we use the generic minisymbol methord: it's faster, since
2563 it only translates the symbols once, not multiple times. */
2564#define MINISYM_THRESHOLD (1000000 / sizeof (asymbol))
2565
2566/* Read minisymbols. For minisymbols, we use the unmodified a.out
2567 symbols. The minisymbol_to_symbol function translates these into
2568 BFD asymbol structures. */
2569
2570long
2571NAME(aout,read_minisymbols) (abfd, dynamic, minisymsp, sizep)
2572 bfd *abfd;
2573 boolean dynamic;
2574 PTR *minisymsp;
2575 unsigned int *sizep;
2576{
2577 if (dynamic)
2578 {
2579 /* We could handle the dynamic symbols here as well, but it's
2580 easier to hand them off. */
2581 return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep);
2582 }
2583
2584 if (! aout_get_external_symbols (abfd))
2585 return -1;
2586
2587 if (obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD)
2588 return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep);
2589
2590 *minisymsp = (PTR) obj_aout_external_syms (abfd);
2591
2592 /* By passing the external symbols back from this routine, we are
2593 giving up control over the memory block. Clear
2594 obj_aout_external_syms, so that we do not try to free it
2595 ourselves. */
2596 obj_aout_external_syms (abfd) = NULL;
2597
2598 *sizep = EXTERNAL_NLIST_SIZE;
2599 return obj_aout_external_sym_count (abfd);
2600}
2601
2602/* Convert a minisymbol to a BFD asymbol. A minisymbol is just an
2603 unmodified a.out symbol. The SYM argument is a structure returned
2604 by bfd_make_empty_symbol, which we fill in here. */
2605
2606asymbol *
2607NAME(aout,minisymbol_to_symbol) (abfd, dynamic, minisym, sym)
2608 bfd *abfd;
2609 boolean dynamic;
2610 const PTR minisym;
2611 asymbol *sym;
2612{
2613 if (dynamic
2614 || obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD)
2615 return _bfd_generic_minisymbol_to_symbol (abfd, dynamic, minisym, sym);
2616
2617 memset (sym, 0, sizeof (aout_symbol_type));
2618
2619 /* We call translate_symbol_table to translate a single symbol. */
2620 if (! (NAME(aout,translate_symbol_table)
2621 (abfd,
2622 (aout_symbol_type *) sym,
2623 (struct external_nlist *) minisym,
2624 (bfd_size_type) 1,
2625 obj_aout_external_strings (abfd),
2626 obj_aout_external_string_size (abfd),
2627 false)))
2628 return NULL;
2629
2630 return sym;
2631}
2632
c188b0be 2633/*
6724ff46 2634 provided a BFD, a section and an offset into the section, calculate
7ed4093a
SC		 2635 and return the name of the source file and the line nearest to the
2636 wanted location.
2637*/
c188b0be 2638
7ed4093a 2639boolean
8eb5d4be
JK		 2640NAME(aout,find_nearest_line)
2641 (abfd, section, symbols, offset, filename_ptr, functionname_ptr, line_ptr)
2642 bfd *abfd;
2643 asection *section;
2644 asymbol **symbols;
2645 bfd_vma offset;
2646 CONST char **filename_ptr;
2647 CONST char **functionname_ptr;
2648 unsigned int *line_ptr;
7ed4093a
SC		 2649{
2650 /* Run down the file looking for the filename, function and linenumber */
2651 asymbol **p;
6db82ea7
SC		 2652 CONST char *directory_name = NULL;
2653 CONST char *main_file_name = NULL;
2654 CONST char *current_file_name = NULL;
2655 CONST char *line_file_name = NULL; /* Value of current_file_name at line number. */
ae115e51 2656 bfd_vma low_line_vma = 0;
7ed4093a
SC		 2657 bfd_vma low_func_vma = 0;
2658 asymbol *func = 0;
f1c6dd5d
ILT		 2659 size_t filelen, funclen;
2660 char *buf;
2661
7ed4093a
SC		 2662 *filename_ptr = abfd->filename;
2663 *functionname_ptr = 0;
2664 *line_ptr = 0;
2665 if (symbols != (asymbol **)NULL) {
2666 for (p = symbols; *p; p++) {
2667 aout_symbol_type *q = (aout_symbol_type *)(*p);
98d43107 2668 next:
7ed4093a
SC		 2669 switch (q->type){
2670 case N_SO:
3f7607af 2671 main_file_name = current_file_name = q->symbol.name;
98d43107
JG		 2672 /* Look ahead to next symbol to check if that too is an N_SO. */
2673 p++;
2674 if (*p == NULL)
2675 break;
2676 q = (aout_symbol_type *)(*p);
6db82ea7 2677 if (q->type != (int)N_SO)
98d43107
JG		 2678 goto next;
2679
2680 /* Found a second N_SO First is directory; second is filename. */
3f7607af
PB		 2681 directory_name = current_file_name;
2682 main_file_name = current_file_name = q->symbol.name;
2683 if (obj_textsec(abfd) != section)
2684 goto done;
2685 break;
2686 case N_SOL:
2687 current_file_name = q->symbol.name;
7ed4093a 2688 break;
3f7607af 2689
7ed4093a
SC		 2690 case N_SLINE:
2691
2692 case N_DSLINE:
2693 case N_BSLINE:
ae115e51
ILT		 2694 /* We'll keep this if it resolves nearer than the one we have
2695 already. */
2696 if (q->symbol.value >= low_line_vma
2697 && q->symbol.value <= offset)
2698 {
2699 *line_ptr = q->desc;
2700 low_line_vma = q->symbol.value;
2701 line_file_name = current_file_name;
2702 }
7ed4093a
SC		 2703 break;
2704 case N_FUN:
2705 {
2706 /* We'll keep this if it is nearer than the one we have already */
2707 if (q->symbol.value >= low_func_vma &&
2708 q->symbol.value <= offset) {
2709 low_func_vma = q->symbol.value;
2710 func = (asymbol *)q;
2711 }
ae115e51 2712 else if (q->symbol.value > offset)
3f7607af 2713 goto done;
7ed4093a
SC		 2714 }
2715 break;
2716 }
2717 }
2718 }
3f7607af
PB		 2719
2720 done:
f1c6dd5d 2721 if (*line_ptr != 0)
3f7607af 2722 main_file_name = line_file_name;
f1c6dd5d
ILT		 2723
2724 if (main_file_name == NULL
2725 || main_file_name[0] == '/'
2726 || directory_name == NULL)
2727 filelen = 0;
2728 else
2729 filelen = strlen (directory_name) + strlen (main_file_name);
2730 if (func == NULL)
2731 funclen = 0;
2732 else
2733 funclen = strlen (bfd_asymbol_name (func));
2734
2735 if (adata (abfd).line_buf != NULL)
2736 free (adata (abfd).line_buf);
2737 if (filelen + funclen == 0)
2738 adata (abfd).line_buf = buf = NULL;
2739 else
2740 {
2741 adata (abfd).line_buf = buf = (char *) malloc (filelen + funclen + 2);
2742 if (adata (abfd).line_buf == NULL)
2743 {
2744 bfd_set_error (bfd_error_no_memory);
2745 return false;
2746 }
2747 }
2748
2749 if (main_file_name != NULL)
2750 {
3f7607af 2751 if (main_file_name[0] == '/' || directory_name == NULL)
f1c6dd5d
ILT		 2752 *filename_ptr = main_file_name;
2753 else
2754 {
2755 sprintf (buf, "%s%s", directory_name, main_file_name);
2756 *filename_ptr = buf;
2757 buf += filelen + 1;
2758 }
2759 }
2760
ae115e51
ILT		 2761 if (func)
2762 {
f1c6dd5d 2763 const char *function = func->name;
ae115e51
ILT		 2764 char *p;
2765
2766 /* The caller expects a symbol name. We actually have a
2767 function name, without the leading underscore. Put the
2768 underscore back in, so that the caller gets a symbol name. */
2769 if (bfd_get_symbol_leading_char (abfd) == '\0')
f1c6dd5d 2770 strcpy (buf, function);
ae115e51
ILT		 2771 else
2772 {
f1c6dd5d
ILT		 2773 buf[0] = bfd_get_symbol_leading_char (abfd);
2774 strcpy (buf + 1, function);
ae115e51 2775 }
ae115e51 2776 /* Have to remove : stuff */
f1c6dd5d 2777 p = strchr (buf, ':');
ae115e51
ILT		 2778 if (p != NULL)
2779 *p = '\0';
f1c6dd5d 2780 *functionname_ptr = buf;
ae115e51 2781 }
f1c6dd5d 2782
7ed4093a 2783 return true;
7ed4093a
SC		 2784}
2785
728472f1 2786/*ARGSUSED*/
c188b0be 2787int
8eb5d4be
JK		 2788NAME(aout,sizeof_headers) (abfd, execable)
2789 bfd *abfd;
2790 boolean execable;
7ed4093a 2791{
6db82ea7 2792 return adata(abfd).exec_bytes_size;
7ed4093a 2793}
5c8444f8
ILT		 2794
2795/* Free all information we have cached for this BFD. We can always
2796 read it again later if we need it. */
2797
2798boolean
2799NAME(aout,bfd_free_cached_info) (abfd)
2800 bfd *abfd;
2801{
2802 asection *o;
2803
c4dd531f
ILT		 2804 if (bfd_get_format (abfd) != bfd_object)
2805 return true;
2806
4852416e
DHW		 2807#define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; }
2808 BFCI_FREE (obj_aout_symbols (abfd));
7ac84736 2809#ifdef USE_MMAP
4fe6d901
KR		 2810 obj_aout_external_syms (abfd) = 0;
2811 bfd_free_window (&obj_aout_sym_window (abfd));
2812 bfd_free_window (&obj_aout_string_window (abfd));
2813 obj_aout_external_strings (abfd) = 0;
7ac84736
KR		 2814#else
2815 BFCI_FREE (obj_aout_external_syms (abfd));
2816 BFCI_FREE (obj_aout_external_strings (abfd));
2817#endif
5c8444f8 2818 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
4852416e
DHW		 2819 BFCI_FREE (o->relocation);
2820#undef BFCI_FREE
5c8444f8
ILT		 2821
2822 return true;
2823}
4c3721d5
ILT		 2824\f
2825/* a.out link code. */
2826
4c3721d5
ILT		 2827static boolean aout_link_add_object_symbols
2828 PARAMS ((bfd *, struct bfd_link_info *));
2829static boolean aout_link_check_archive_element
2830 PARAMS ((bfd *, struct bfd_link_info *, boolean *));
4c3721d5
ILT		 2831static boolean aout_link_free_symbols PARAMS ((bfd *));
2832static boolean aout_link_check_ar_symbols
2833 PARAMS ((bfd *, struct bfd_link_info *, boolean *pneeded));
2834static boolean aout_link_add_symbols
2835 PARAMS ((bfd *, struct bfd_link_info *));
2836
2837/* Routine to create an entry in an a.out link hash table. */
2838
e85e8bfe
ILT		 2839struct bfd_hash_entry *
2840NAME(aout,link_hash_newfunc) (entry, table, string)
4c3721d5
ILT		 2841 struct bfd_hash_entry *entry;
2842 struct bfd_hash_table *table;
2843 const char *string;
2844{
2845 struct aout_link_hash_entry *ret = (struct aout_link_hash_entry *) entry;
2846
2847 /* Allocate the structure if it has not already been allocated by a
2848 subclass. */
2849 if (ret == (struct aout_link_hash_entry *) NULL)
2850 ret = ((struct aout_link_hash_entry *)
2851 bfd_hash_allocate (table, sizeof (struct aout_link_hash_entry)));
9783e04a
DM		 2852 if (ret == (struct aout_link_hash_entry *) NULL)
2853 {
68241b2b 2854 bfd_set_error (bfd_error_no_memory);
9783e04a
DM		 2855 return (struct bfd_hash_entry *) ret;
2856 }
4c3721d5
ILT		 2857
2858 /* Call the allocation method of the superclass. */
2859 ret = ((struct aout_link_hash_entry *)
2860 _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2861 table, string));
9783e04a 2862 if (ret)
35fee729
ILT		 2863 {
2864 /* Set local fields. */
2865 ret->written = false;
2866 ret->indx = -1;
2867 }
4c3721d5
ILT		 2868
2869 return (struct bfd_hash_entry *) ret;
2870}
2871
e85e8bfe
ILT		 2872/* Initialize an a.out link hash table. */
2873
2874boolean
2875NAME(aout,link_hash_table_init) (table, abfd, newfunc)
2876 struct aout_link_hash_table *table;
2877 bfd *abfd;
2878 struct bfd_hash_entry *(*newfunc) PARAMS ((struct bfd_hash_entry *,
2879 struct bfd_hash_table *,
2880 const char *));
2881{
2882 return _bfd_link_hash_table_init (&table->root, abfd, newfunc);
2883}
2884
4c3721d5
ILT		 2885/* Create an a.out link hash table. */
2886
2887struct bfd_link_hash_table *
2888NAME(aout,link_hash_table_create) (abfd)
2889 bfd *abfd;
2890{
2891 struct aout_link_hash_table *ret;
2892
2893 ret = ((struct aout_link_hash_table *)
c3246d9b
ILT		 2894 bfd_alloc (abfd, sizeof (struct aout_link_hash_table)));
2895 if (ret == NULL)
2896 {
2897 bfd_set_error (bfd_error_no_memory);
2898 return (struct bfd_link_hash_table *) NULL;
2899 }
e85e8bfe
ILT		 2900 if (! NAME(aout,link_hash_table_init) (ret, abfd,
2901 NAME(aout,link_hash_newfunc)))
4c3721d5
ILT		 2902 {
2903 free (ret);
2904 return (struct bfd_link_hash_table *) NULL;
2905 }
2906 return &ret->root;
2907}
2908
4c3721d5
ILT		 2909/* Given an a.out BFD, add symbols to the global hash table as
2910 appropriate. */
2911
2912boolean
2913NAME(aout,link_add_symbols) (abfd, info)
2914 bfd *abfd;
2915 struct bfd_link_info *info;
2916{
2917 switch (bfd_get_format (abfd))
2918 {
2919 case bfd_object:
2920 return aout_link_add_object_symbols (abfd, info);
2921 case bfd_archive:
2922 return _bfd_generic_link_add_archive_symbols
2923 (abfd, info, aout_link_check_archive_element);
2924 default:
68241b2b 2925 bfd_set_error (bfd_error_wrong_format);
4c3721d5
ILT		 2926 return false;
2927 }
2928}
2929
2930/* Add symbols from an a.out object file. */
2931
2932static boolean
2933aout_link_add_object_symbols (abfd, info)
2934 bfd *abfd;
2935 struct bfd_link_info *info;
2936{
5c8444f8 2937 if (! aout_get_external_symbols (abfd))
4c3721d5
ILT		 2938 return false;
2939 if (! aout_link_add_symbols (abfd, info))
2940 return false;
2941 if (! info->keep_memory)
2942 {
2943 if (! aout_link_free_symbols (abfd))
2944 return false;
2945 }
2946 return true;
2947}
2948
2949/* Check a single archive element to see if we need to include it in
2950 the link. *PNEEDED is set according to whether this element is
2951 needed in the link or not. This is called from
2952 _bfd_generic_link_add_archive_symbols. */
2953
2954static boolean
2955aout_link_check_archive_element (abfd, info, pneeded)
2956 bfd *abfd;
2957 struct bfd_link_info *info;
2958 boolean *pneeded;
2959{
5c8444f8 2960 if (! aout_get_external_symbols (abfd))
4c3721d5
ILT		 2961 return false;
2962
2963 if (! aout_link_check_ar_symbols (abfd, info, pneeded))
2964 return false;
2965
2966 if (*pneeded)
2967 {
2968 if (! aout_link_add_symbols (abfd, info))
2969 return false;
2970 }
2971
1afd2380 2972 if (! info->keep_memory || ! *pneeded)
4c3721d5
ILT		 2973 {
2974 if (! aout_link_free_symbols (abfd))
2975 return false;
2976 }
2977
2978 return true;
2979}
2980
4c3721d5
ILT		 2981/* Free up the internal symbols read from an a.out file. */
2982
2983static boolean
2984aout_link_free_symbols (abfd)
2985 bfd *abfd;
2986{
2987 if (obj_aout_external_syms (abfd) != (struct external_nlist *) NULL)
2988 {
7ac84736 2989#ifdef USE_MMAP
4fe6d901 2990 bfd_free_window (&obj_aout_sym_window (abfd));
7ac84736
KR		 2991#else
2992 free ((PTR) obj_aout_external_syms (abfd));
2993#endif
4c3721d5
ILT		 2994 obj_aout_external_syms (abfd) = (struct external_nlist *) NULL;
2995 }
2996 if (obj_aout_external_strings (abfd) != (char *) NULL)
2997 {
7ac84736 2998#ifdef USE_MMAP
4fe6d901 2999 bfd_free_window (&obj_aout_string_window (abfd));
7ac84736
KR		 3000#else
3001 free ((PTR) obj_aout_external_strings (abfd));
3002#endif
4c3721d5
ILT		 3003 obj_aout_external_strings (abfd) = (char *) NULL;
3004 }
3005 return true;
3006}
3007
3008/* Look through the internal symbols to see if this object file should
3009 be included in the link. We should include this object file if it
3010 defines any symbols which are currently undefined. If this object
3011 file defines a common symbol, then we may adjust the size of the
3012 known symbol but we do not include the object file in the link
3013 (unless there is some other reason to include it). */
3014
3015static boolean
3016aout_link_check_ar_symbols (abfd, info, pneeded)
3017 bfd *abfd;
3018 struct bfd_link_info *info;
3019 boolean *pneeded;
3020{
3021 register struct external_nlist *p;
3022 struct external_nlist *pend;
3023 char *strings;
3024
3025 *pneeded = false;
3026
3027 /* Look through all the symbols. */
3028 p = obj_aout_external_syms (abfd);
3029 pend = p + obj_aout_external_sym_count (abfd);
3030 strings = obj_aout_external_strings (abfd);
3031 for (; p < pend; p++)
3032 {
3033 int type = bfd_h_get_8 (abfd, p->e_type);
3034 const char *name;
3035 struct bfd_link_hash_entry *h;
3036
4298e311
ILT		 3037 /* Ignore symbols that are not externally visible. This is an
3038 optimization only, as we check the type more thoroughly
3039 below. */
4587b578
ILT		 3040 if (((type & N_EXT) == 0
3041 || (type & N_STAB) != 0
3042 || type == N_FN)
4298e311
ILT		 3043 && type != N_WEAKA
3044 && type != N_WEAKT
3045 && type != N_WEAKD
3046 && type != N_WEAKB)
9b39ed6b
ILT		 3047 {
3048 if (type == N_WARNING
3049 || type == N_INDR)
3050 ++p;
3051 continue;
3052 }
4c3721d5
ILT		 3053
3054 name = strings + GET_WORD (abfd, p->e_strx);
3055 h = bfd_link_hash_lookup (info->hash, name, false, false, true);
3056
3057 /* We are only interested in symbols that are currently
3058 undefined or common. */
3059 if (h == (struct bfd_link_hash_entry *) NULL
3060 || (h->type != bfd_link_hash_undefined
3061 && h->type != bfd_link_hash_common))
9b39ed6b
ILT		 3062 {
3063 if (type == (N_INDR | N_EXT))
3064 ++p;
3065 continue;
3066 }
4c3721d5 3067
9b39ed6b
ILT		 3068 if (type == (N_TEXT | N_EXT)
3069 || type == (N_DATA | N_EXT)
3070 || type == (N_BSS | N_EXT)
3071 || type == (N_ABS | N_EXT)
3072 || type == (N_INDR | N_EXT))
4c3721d5
ILT		 3073 {
3074 /* This object file defines this symbol. We must link it
3075 in. This is true regardless of whether the current
3076 definition of the symbol is undefined or common. If the
3077 current definition is common, we have a case in which we
3078 have already seen an object file including
3079 int a;
3080 and this object file from the archive includes
3081 int a = 5;
f88c9008
ILT		 3082 In such a case we must include this object file.
3083
3084 FIXME: The SunOS 4.1.3 linker will pull in the archive
3085 element if the symbol is defined in the .data section,
3086 but not if it is defined in the .text section. That
3087 seems a bit crazy to me, and I haven't implemented it.
3088 However, it might be correct. */
4c3721d5
ILT		 3089 if (! (*info->callbacks->add_archive_element) (info, abfd, name))
3090 return false;
3091 *pneeded = true;
3092 return true;
3093 }
3094
9b39ed6b 3095 if (type == (N_UNDF | N_EXT))
4c3721d5
ILT		 3096 {
3097 bfd_vma value;
3098
3099 value = GET_WORD (abfd, p->e_value);
3100 if (value != 0)
3101 {
3102 /* This symbol is common in the object from the archive
3103 file. */
3104 if (h->type == bfd_link_hash_undefined)
3105 {
3106 bfd *symbfd;
e1f99f60 3107 unsigned int power;
4c3721d5
ILT		 3108
3109 symbfd = h->u.undef.abfd;
3110 if (symbfd == (bfd *) NULL)
3111 {
3112 /* This symbol was created as undefined from
3113 outside BFD. We assume that we should link
3114 in the object file. This is done for the -u
3115 option in the linker. */
3116 if (! (*info->callbacks->add_archive_element) (info,
3117 abfd,
3118 name))
3119 return false;
3120 *pneeded = true;
3121 return true;
3122 }
3123 /* Turn the current link symbol into a common
3124 symbol. It is already on the undefs list. */
3125 h->type = bfd_link_hash_common;
773033d2
ILT		 3126 h->u.c.p = ((struct bfd_link_hash_common_entry *)
3127 bfd_hash_allocate (&info->hash->table,
3128 sizeof (struct bfd_link_hash_common_entry)));
3129 if (h->u.c.p == NULL)
3130 return false;
3131
4c3721d5 3132 h->u.c.size = value;
e1f99f60
ILT		 3133
3134 /* FIXME: This isn't quite right. The maximum
3135 alignment of a common symbol should be set by the
3136 architecture of the output file, not of the input
3137 file. */
3138 power = bfd_log2 (value);
3139 if (power > bfd_get_arch_info (abfd)->section_align_power)
3140 power = bfd_get_arch_info (abfd)->section_align_power;
773033d2 3141 h->u.c.p->alignment_power = power;
e1f99f60 3142
773033d2
ILT		 3143 h->u.c.p->section = bfd_make_section_old_way (symbfd,
3144 "COMMON");
4c3721d5
ILT		 3145 }
3146 else
3147 {
3148 /* Adjust the size of the common symbol if
3149 necessary. */
3150 if (value > h->u.c.size)
3151 h->u.c.size = value;
3152 }
3153 }
3154 }
4298e311
ILT		 3155
3156 if (type == N_WEAKA
3157 || type == N_WEAKT
3158 || type == N_WEAKD
3159 || type == N_WEAKB)
3160 {
3161 /* This symbol is weak but defined. We must pull it in if
3162 the current link symbol is undefined, but we don't want
3163 it if the current link symbol is common. */
3164 if (h->type == bfd_link_hash_undefined)
3165 {
3166 if (! (*info->callbacks->add_archive_element) (info, abfd, name))
3167 return false;
3168 *pneeded = true;
3169 return true;
3170 }
3171 }
4c3721d5
ILT		 3172 }
3173
3174 /* We do not need this object file. */
3175 return true;
3176}
3177
3178/* Add all symbols from an object file to the hash table. */
3179
3180static boolean
3181aout_link_add_symbols (abfd, info)
3182 bfd *abfd;
3183 struct bfd_link_info *info;
3184{
e85e8bfe
ILT		 3185 boolean (*add_one_symbol) PARAMS ((struct bfd_link_info *, bfd *,
3186 const char *, flagword, asection *,
3187 bfd_vma, const char *, boolean,
3188 boolean,
3189 struct bfd_link_hash_entry **));
396aaeb2 3190 struct external_nlist *syms;
4c3721d5
ILT		 3191 bfd_size_type sym_count;
3192 char *strings;
3193 boolean copy;
3194 struct aout_link_hash_entry **sym_hash;
3195 register struct external_nlist *p;
3196 struct external_nlist *pend;
3197
396aaeb2 3198 syms = obj_aout_external_syms (abfd);
4c3721d5
ILT		 3199 sym_count = obj_aout_external_sym_count (abfd);
3200 strings = obj_aout_external_strings (abfd);
3201 if (info->keep_memory)
3202 copy = false;
3203 else
3204 copy = true;
3205
396aaeb2
ILT		 3206 if ((abfd->flags & DYNAMIC) != 0
3207 && aout_backend_info (abfd)->add_dynamic_symbols != NULL)
3208 {
3209 if (! ((*aout_backend_info (abfd)->add_dynamic_symbols)
3210 (abfd, info, &syms, &sym_count, &strings)))
3211 return false;
3212 }
3213
4c3721d5
ILT		 3214 /* We keep a list of the linker hash table entries that correspond
3215 to particular symbols. We could just look them up in the hash
3216 table, but keeping the list is more efficient. Perhaps this
3217 should be conditional on info->keep_memory. */
3218 sym_hash = ((struct aout_link_hash_entry **)
3219 bfd_alloc (abfd,
3220 ((size_t) sym_count
3221 * sizeof (struct aout_link_hash_entry *))));
e85e8bfe 3222 if (sym_hash == NULL && sym_count != 0)
9783e04a 3223 {
68241b2b 3224 bfd_set_error (bfd_error_no_memory);
9783e04a
DM		 3225 return false;
3226 }
4c3721d5
ILT		 3227 obj_aout_sym_hashes (abfd) = sym_hash;
3228
e85e8bfe
ILT		 3229 add_one_symbol = aout_backend_info (abfd)->add_one_symbol;
3230 if (add_one_symbol == NULL)
3231 add_one_symbol = _bfd_generic_link_add_one_symbol;
3232
396aaeb2 3233 p = syms;
4c3721d5
ILT		 3234 pend = p + sym_count;
3235 for (; p < pend; p++, sym_hash++)
3236 {
3237 int type;
3238 const char *name;
3239 bfd_vma value;
3240 asection *section;
3241 flagword flags;
3242 const char *string;
3243
3244 *sym_hash = NULL;
3245
3246 type = bfd_h_get_8 (abfd, p->e_type);
3247
3248 /* Ignore debugging symbols. */
3249 if ((type & N_STAB) != 0)
3250 continue;
3251
4c3721d5
ILT		 3252 name = strings + GET_WORD (abfd, p->e_strx);
3253 value = GET_WORD (abfd, p->e_value);
3254 flags = BSF_GLOBAL;
3255 string = NULL;
3256 switch (type)
3257 {
3258 default:
3259 abort ();
4298e311
ILT		 3260
3261 case N_UNDF:
3262 case N_ABS:
3263 case N_TEXT:
3264 case N_DATA:
3265 case N_BSS:
3266 case N_FN_SEQ:
3267 case N_COMM:
3268 case N_SETV:
3269 case N_FN:
3270 /* Ignore symbols that are not externally visible. */
3271 continue;
3272 case N_INDR:
3273 /* Ignore local indirect symbol. */
3274 ++p;
3275 ++sym_hash;
3276 continue;
3277
4c3721d5 3278 case N_UNDF | N_EXT:
4298e311
ILT		 3279 if (value == 0)
3280 {
4587b578 3281 section = bfd_und_section_ptr;
4298e311
ILT		 3282 flags = 0;
3283 }
4c3721d5 3284 else
4587b578 3285 section = bfd_com_section_ptr;
4c3721d5
ILT		 3286 break;
3287 case N_ABS | N_EXT:
4587b578 3288 section = bfd_abs_section_ptr;
4c3721d5
ILT		 3289 break;
3290 case N_TEXT | N_EXT:
3291 section = obj_textsec (abfd);
3292 value -= bfd_get_section_vma (abfd, section);
3293 break;
3294 case N_DATA | N_EXT:
2cd086e3
ILT		 3295 case N_SETV | N_EXT:
3296 /* Treat N_SETV symbols as N_DATA symbol; see comment in
3297 translate_from_native_sym_flags. */
4c3721d5
ILT		 3298 section = obj_datasec (abfd);
3299 value -= bfd_get_section_vma (abfd, section);
3300 break;
3301 case N_BSS | N_EXT:
3302 section = obj_bsssec (abfd);
3303 value -= bfd_get_section_vma (abfd, section);
3304 break;
3305 case N_INDR | N_EXT:
3306 /* An indirect symbol. The next symbol is the symbol
3307 which this one really is. */
3308 BFD_ASSERT (p + 1 < pend);
3309 ++p;
3310 string = strings + GET_WORD (abfd, p->e_strx);
4587b578 3311 section = bfd_ind_section_ptr;
4c3721d5
ILT		 3312 flags |= BSF_INDIRECT;
3313 break;
3314 case N_COMM | N_EXT:
4587b578 3315 section = bfd_com_section_ptr;
4c3721d5 3316 break;
964affdc 3317 case N_SETA: case N_SETA | N_EXT:
4587b578 3318 section = bfd_abs_section_ptr;
4c3721d5
ILT		 3319 flags |= BSF_CONSTRUCTOR;
3320 break;
964affdc 3321 case N_SETT: case N_SETT | N_EXT:
4c3721d5
ILT		 3322 section = obj_textsec (abfd);
3323 flags |= BSF_CONSTRUCTOR;
3324 value -= bfd_get_section_vma (abfd, section);
3325 break;
964affdc 3326 case N_SETD: case N_SETD | N_EXT:
4c3721d5
ILT		 3327 section = obj_datasec (abfd);
3328 flags |= BSF_CONSTRUCTOR;
3329 value -= bfd_get_section_vma (abfd, section);
3330 break;
964affdc 3331 case N_SETB: case N_SETB | N_EXT:
4c3721d5
ILT		 3332 section = obj_bsssec (abfd);
3333 flags |= BSF_CONSTRUCTOR;
3334 value -= bfd_get_section_vma (abfd, section);
3335 break;
3336 case N_WARNING:
3337 /* A warning symbol. The next symbol is the one to warn
3338 about. */
3339 BFD_ASSERT (p + 1 < pend);
3340 ++p;
3341 string = name;
3342 name = strings + GET_WORD (abfd, p->e_strx);
4587b578 3343 section = bfd_und_section_ptr;
4c3721d5
ILT		 3344 flags |= BSF_WARNING;
3345 break;
4298e311 3346 case N_WEAKU:
4587b578 3347 section = bfd_und_section_ptr;
4298e311
ILT		 3348 flags = BSF_WEAK;
3349 break;
3350 case N_WEAKA:
4587b578 3351 section = bfd_abs_section_ptr;
4298e311
ILT		 3352 flags = BSF_WEAK;
3353 break;
3354 case N_WEAKT:
3355 section = obj_textsec (abfd);
3356 value -= bfd_get_section_vma (abfd, section);
3357 flags = BSF_WEAK;
3358 break;
3359 case N_WEAKD:
3360 section = obj_datasec (abfd);
3361 value -= bfd_get_section_vma (abfd, section);
3362 flags = BSF_WEAK;
3363 break;
3364 case N_WEAKB:
3365 section = obj_bsssec (abfd);
3366 value -= bfd_get_section_vma (abfd, section);
3367 flags = BSF_WEAK;
3368 break;
4c3721d5
ILT		 3369 }
3370
e85e8bfe 3371 if (! ((*add_one_symbol)
e68de5d5 3372 (info, abfd, name, flags, section, value, string, copy, false,
ec099b4b 3373 (struct bfd_link_hash_entry **) sym_hash)))
4c3721d5 3374 return false;
53155af1 3375
e1f99f60
ILT		 3376 /* Restrict the maximum alignment of a common symbol based on
3377 the architecture, since a.out has no way to represent
3378 alignment requirements of a section in a .o file. FIXME:
3379 This isn't quite right: it should use the architecture of the
3380 output file, not the input files. */
3381 if ((*sym_hash)->root.type == bfd_link_hash_common
773033d2 3382 && ((*sym_hash)->root.u.c.p->alignment_power >
e1f99f60 3383 bfd_get_arch_info (abfd)->section_align_power))
773033d2 3384 (*sym_hash)->root.u.c.p->alignment_power =
e1f99f60
ILT		 3385 bfd_get_arch_info (abfd)->section_align_power;
3386
f4945271
ILT		 3387 /* If this is a set symbol, and we are not building sets, then
3388 it is possible for the hash entry to not have been set. In
3389 such a case, treat the symbol as not globally defined. */
3390 if ((*sym_hash)->root.type == bfd_link_hash_new)
3391 {
3392 BFD_ASSERT ((flags & BSF_CONSTRUCTOR) != 0);
3393 *sym_hash = NULL;
3394 }
3395
53155af1
ILT		 3396 if (type == (N_INDR | N_EXT) || type == N_WARNING)
3397 ++sym_hash;
4c3721d5
ILT		 3398 }
3399
3400 return true;
3401}
3402
3403/* During the final link step we need to pass around a bunch of
3404 information, so we do it in an instance of this structure. */
3405
3406struct aout_final_link_info
3407{
3408 /* General link information. */
3409 struct bfd_link_info *info;
3410 /* Output bfd. */
3411 bfd *output_bfd;
3412 /* Reloc file positions. */
3413 file_ptr treloff, dreloff;
3414 /* File position of symbols. */
3415 file_ptr symoff;
3416 /* String table. */
1afd2380
ILT		 3417 struct bfd_strtab_hash *strtab;
3418 /* A buffer large enough to hold the contents of any section. */
3419 bfd_byte *contents;
3420 /* A buffer large enough to hold the relocs of any section. */
3421 PTR relocs;
3422 /* A buffer large enough to hold the symbol map of any input BFD. */
3423 int *symbol_map;
3424 /* A buffer large enough to hold output symbols of any input BFD. */
3425 struct external_nlist *output_syms;
4c3721d5
ILT		 3426};
3427
3428static boolean aout_link_input_bfd
3429 PARAMS ((struct aout_final_link_info *, bfd *input_bfd));
3430static boolean aout_link_write_symbols
1afd2380 3431 PARAMS ((struct aout_final_link_info *, bfd *input_bfd));
4c3721d5
ILT		 3432static boolean aout_link_write_other_symbol
3433 PARAMS ((struct aout_link_hash_entry *, PTR));
3434static boolean aout_link_input_section
3435 PARAMS ((struct aout_final_link_info *, bfd *input_bfd,
3436 asection *input_section, file_ptr *reloff_ptr,
1afd2380 3437 bfd_size_type rel_size));
4c3721d5
ILT		 3438static boolean aout_link_input_section_std
3439 PARAMS ((struct aout_final_link_info *, bfd *input_bfd,
3440 asection *input_section, struct reloc_std_external *,
1afd2380 3441 bfd_size_type rel_size, bfd_byte *contents));
4c3721d5
ILT		 3442static boolean aout_link_input_section_ext
3443 PARAMS ((struct aout_final_link_info *, bfd *input_bfd,
3444 asection *input_section, struct reloc_ext_external *,
1afd2380 3445 bfd_size_type rel_size, bfd_byte *contents));
4c3721d5
ILT		 3446static INLINE asection *aout_reloc_index_to_section
3447 PARAMS ((bfd *, int));
ec099b4b
ILT		 3448static boolean aout_link_reloc_link_order
3449 PARAMS ((struct aout_final_link_info *, asection *,
3450 struct bfd_link_order *));
4c3721d5
ILT		 3451
3452/* Do the final link step. This is called on the output BFD. The
3453 INFO structure should point to a list of BFDs linked through the
3454 link_next field which can be used to find each BFD which takes part
3455 in the output. Also, each section in ABFD should point to a list
3456 of bfd_link_order structures which list all the input sections for
3457 the output section. */
3458
3459boolean
3460NAME(aout,final_link) (abfd, info, callback)
3461 bfd *abfd;
3462 struct bfd_link_info *info;
3463 void (*callback) PARAMS ((bfd *, file_ptr *, file_ptr *, file_ptr *));
3464{
3465 struct aout_final_link_info aout_info;
3466 register bfd *sub;
1afd2380
ILT		 3467 bfd_size_type trsize, drsize;
3468 size_t max_contents_size;
3469 size_t max_relocs_size;
3470 size_t max_sym_count;
4c3721d5
ILT		 3471 bfd_size_type text_size;
3472 file_ptr text_end;
3473 register struct bfd_link_order *p;
3474 asection *o;
ec099b4b 3475 boolean have_link_order_relocs;
4c3721d5 3476
ae115e51
ILT		 3477 if (info->shared)
3478 abfd->flags |= DYNAMIC;
3479
4c3721d5
ILT		 3480 aout_info.info = info;
3481 aout_info.output_bfd = abfd;
1afd2380
ILT		 3482 aout_info.contents = NULL;
3483 aout_info.relocs = NULL;
3484
3485 /* Figure out the largest section size. Also, if generating
3486 relocateable output, count the relocs. */
3487 trsize = 0;
3488 drsize = 0;
3489 max_contents_size = 0;
3490 max_relocs_size = 0;
3491 max_sym_count = 0;
3492 for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
4c3721d5 3493 {
1afd2380 3494 size_t sz;
4c3721d5 3495
1afd2380 3496 if (info->relocateable)
4c3721d5 3497 {
6c8fa8e6 3498 if (bfd_get_flavour (sub) == bfd_target_aout_flavour)
4c3721d5
ILT		 3499 {
3500 trsize += exec_hdr (sub)->a_trsize;
3501 drsize += exec_hdr (sub)->a_drsize;
3502 }
3503 else
3504 {
3505 /* FIXME: We need to identify the .text and .data sections
3506 and call get_reloc_upper_bound and canonicalize_reloc to
3507 work out the number of relocs needed, and then multiply
3508 by the reloc size. */
3509 abort ();
3510 }
3511 }
1afd2380 3512
204ba9e3
ILT		 3513 if (bfd_get_flavour (sub) == bfd_target_aout_flavour)
3514 {
3515 sz = bfd_section_size (sub, obj_textsec (sub));
3516 if (sz > max_contents_size)
3517 max_contents_size = sz;
3518 sz = bfd_section_size (sub, obj_datasec (sub));
3519 if (sz > max_contents_size)
3520 max_contents_size = sz;
3521
3522 sz = exec_hdr (sub)->a_trsize;
3523 if (sz > max_relocs_size)
3524 max_relocs_size = sz;
3525 sz = exec_hdr (sub)->a_drsize;
3526 if (sz > max_relocs_size)
3527 max_relocs_size = sz;
3528
3529 sz = obj_aout_external_sym_count (sub);
3530 if (sz > max_sym_count)
3531 max_sym_count = sz;
3532 }
1afd2380
ILT		 3533 }
3534
3535 if (info->relocateable)
3536 {
ec6b18c4
ILT		 3537 if (obj_textsec (abfd) != (asection *) NULL)
3538 trsize += (_bfd_count_link_order_relocs (obj_textsec (abfd)
3539 ->link_order_head)
3540 * obj_reloc_entry_size (abfd));
ec6b18c4
ILT		 3541 if (obj_datasec (abfd) != (asection *) NULL)
3542 drsize += (_bfd_count_link_order_relocs (obj_datasec (abfd)
3543 ->link_order_head)
3544 * obj_reloc_entry_size (abfd));
4c3721d5
ILT		 3545 }
3546
1afd2380
ILT		 3547 exec_hdr (abfd)->a_trsize = trsize;
3548 exec_hdr (abfd)->a_drsize = drsize;
3549
964affdc
DM		 3550 exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd);
3551
4c3721d5
ILT		 3552 /* Adjust the section sizes and vmas according to the magic number.
3553 This sets a_text, a_data and a_bss in the exec_hdr and sets the
3554 filepos for each section. */
3555 if (! NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end))
1afd2380 3556 goto error_return;
4c3721d5
ILT		 3557
3558 /* The relocation and symbol file positions differ among a.out
3559 targets. We are passed a callback routine from the backend
3560 specific code to handle this.
3561 FIXME: At this point we do not know how much space the symbol
3562 table will require. This will not work for any (nonstandard)
3563 a.out target that needs to know the symbol table size before it
3564 can compute the relocation file positions. This may or may not
3565 be the case for the hp300hpux target, for example. */
3566 (*callback) (abfd, &aout_info.treloff, &aout_info.dreloff,
3567 &aout_info.symoff);
3568 obj_textsec (abfd)->rel_filepos = aout_info.treloff;
3569 obj_datasec (abfd)->rel_filepos = aout_info.dreloff;
3570 obj_sym_filepos (abfd) = aout_info.symoff;
3571
3572 /* We keep a count of the symbols as we output them. */
3573 obj_aout_external_sym_count (abfd) = 0;
3574
3575 /* We accumulate the string table as we write out the symbols. */
1afd2380
ILT		 3576 aout_info.strtab = _bfd_stringtab_init ();
3577 if (aout_info.strtab == NULL)
3578 goto error_return;
3579
3580 /* Allocate buffers to hold section contents and relocs. */
3581 aout_info.contents = (bfd_byte *) malloc (max_contents_size);
3582 aout_info.relocs = (PTR) malloc (max_relocs_size);
3583 aout_info.symbol_map = (int *) malloc (max_sym_count * sizeof (int *));
3584 aout_info.output_syms = ((struct external_nlist *)
3585 malloc ((max_sym_count + 1)
3586 * sizeof (struct external_nlist)));
3587 if ((aout_info.contents == NULL && max_contents_size != 0)
3588 || (aout_info.relocs == NULL && max_relocs_size != 0)
3589 || (aout_info.symbol_map == NULL && max_sym_count != 0)
3590 || aout_info.output_syms == NULL)
3591 {
3592 bfd_set_error (bfd_error_no_memory);
3593 goto error_return;
3594 }
4c3721d5 3595
34e9ffbc
NH		 3596 /* If we have a symbol named __DYNAMIC, force it out now. This is
3597 required by SunOS. Doing this here rather than in sunos.c is a
3598 hack, but it's easier than exporting everything which would be
3599 needed. */
3600 {
3601 struct aout_link_hash_entry *h;
3602
3603 h = aout_link_hash_lookup (aout_hash_table (info), "__DYNAMIC",
3604 false, false, false);
3605 if (h != NULL)
3606 aout_link_write_other_symbol (h, &aout_info);
3607 }
3608
4c3721d5
ILT		 3609 /* The most time efficient way to do the link would be to read all
3610 the input object files into memory and then sort out the
3611 information into the output file. Unfortunately, that will
3612 probably use too much memory. Another method would be to step
3613 through everything that composes the text section and write it
3614 out, and then everything that composes the data section and write
3615 it out, and then write out the relocs, and then write out the
3616 symbols. Unfortunately, that requires reading stuff from each
3617 input file several times, and we will not be able to keep all the
3618 input files open simultaneously, and reopening them will be slow.
3619
3620 What we do is basically process one input file at a time. We do
3621 everything we need to do with an input file once--copy over the
3622 section contents, handle the relocation information, and write
3623 out the symbols--and then we throw away the information we read
3624 from it. This approach requires a lot of lseeks of the output
3625 file, which is unfortunate but still faster than reopening a lot
3626 of files.
3627
3628 We use the output_has_begun field of the input BFDs to see
3629 whether we have already handled it. */
3630 for (sub = info->input_bfds; sub != (bfd *) NULL; sub = sub->link_next)
3631 sub->output_has_begun = false;
3632
ec099b4b 3633 have_link_order_relocs = false;
4c3721d5
ILT		 3634 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
3635 {
4c3721d5
ILT		 3636 for (p = o->link_order_head;
3637 p != (struct bfd_link_order *) NULL;
3638 p = p->next)
3639 {
e68de5d5
ILT		 3640 if (p->type == bfd_indirect_link_order
3641 && (bfd_get_flavour (p->u.indirect.section->owner)
3642 == bfd_target_aout_flavour))
4c3721d5 3643 {
e68de5d5
ILT		 3644 bfd *input_bfd;
3645
4c3721d5 3646 input_bfd = p->u.indirect.section->owner;
e68de5d5 3647 if (! input_bfd->output_has_begun)
4c3721d5 3648 {
e68de5d5 3649 if (! aout_link_input_bfd (&aout_info, input_bfd))
1afd2380 3650 goto error_return;
e68de5d5 3651 input_bfd->output_has_begun = true;
4c3721d5 3652 }
e68de5d5 3653 }
ec099b4b
ILT		 3654 else if (p->type == bfd_section_reloc_link_order
3655 || p->type == bfd_symbol_reloc_link_order)
3656 {
3657 /* These are handled below. */
3658 have_link_order_relocs = true;
3659 }
e68de5d5
ILT		 3660 else
3661 {
4c3721d5 3662 if (! _bfd_default_link_order (abfd, info, o, p))
1afd2380 3663 goto error_return;
4c3721d5
ILT		 3664 }
3665 }
3666 }
3667
3668 /* Write out any symbols that we have not already written out. */
3669 aout_link_hash_traverse (aout_hash_table (info),
3670 aout_link_write_other_symbol,
3671 (PTR) &aout_info);
3672
ec099b4b
ILT		 3673 /* Now handle any relocs we were asked to create by the linker.
3674 These did not come from any input file. We must do these after
3675 we have written out all the symbols, so that we know the symbol
3676 indices to use. */
3677 if (have_link_order_relocs)
3678 {
3679 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
3680 {
3681 for (p = o->link_order_head;
3682 p != (struct bfd_link_order *) NULL;
3683 p = p->next)
3684 {
3685 if (p->type == bfd_section_reloc_link_order
3686 || p->type == bfd_symbol_reloc_link_order)
3687 {
3688 if (! aout_link_reloc_link_order (&aout_info, o, p))
1afd2380 3689 goto error_return;
ec099b4b
ILT		 3690 }
3691 }
3692 }
3693 }
3694
1afd2380
ILT		 3695 if (aout_info.contents != NULL)
3696 {
3697 free (aout_info.contents);
3698 aout_info.contents = NULL;
3699 }
3700 if (aout_info.relocs != NULL)
3701 {
3702 free (aout_info.relocs);
3703 aout_info.relocs = NULL;
3704 }
3705 if (aout_info.symbol_map != NULL)
3706 {
3707 free (aout_info.symbol_map);
3708 aout_info.symbol_map = NULL;
3709 }
3710 if (aout_info.output_syms != NULL)
3711 {
3712 free (aout_info.output_syms);
3713 aout_info.output_syms = NULL;
3714 }
3715
e85e8bfe
ILT		 3716 /* Finish up any dynamic linking we may be doing. */
3717 if (aout_backend_info (abfd)->finish_dynamic_link != NULL)
3718 {
3719 if (! (*aout_backend_info (abfd)->finish_dynamic_link) (abfd, info))
1afd2380 3720 goto error_return;
e85e8bfe
ILT		 3721 }
3722
4c3721d5
ILT		 3723 /* Update the header information. */
3724 abfd->symcount = obj_aout_external_sym_count (abfd);
3725 exec_hdr (abfd)->a_syms = abfd->symcount * EXTERNAL_NLIST_SIZE;
3726 obj_str_filepos (abfd) = obj_sym_filepos (abfd) + exec_hdr (abfd)->a_syms;
3727 obj_textsec (abfd)->reloc_count =
3728 exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd);
3729 obj_datasec (abfd)->reloc_count =
3730 exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd);
3731
3732 /* Write out the string table. */
3733 if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0)
1afd2380
ILT		 3734 goto error_return;
3735 return emit_stringtab (abfd, aout_info.strtab);
3736
3737 error_return:
3738 if (aout_info.contents != NULL)
3739 free (aout_info.contents);
3740 if (aout_info.relocs != NULL)
3741 free (aout_info.relocs);
3742 if (aout_info.symbol_map != NULL)
3743 free (aout_info.symbol_map);
3744 if (aout_info.output_syms != NULL)
3745 free (aout_info.output_syms);
3746 return false;
4c3721d5
ILT		 3747}
3748
3749/* Link an a.out input BFD into the output file. */
3750
3751static boolean
3752aout_link_input_bfd (finfo, input_bfd)
3753 struct aout_final_link_info *finfo;
3754 bfd *input_bfd;
3755{
3756 bfd_size_type sym_count;
4c3721d5
ILT		 3757
3758 BFD_ASSERT (bfd_get_format (input_bfd) == bfd_object);
3759
e85e8bfe
ILT		 3760 /* If this is a dynamic object, it may need special handling. */
3761 if ((input_bfd->flags & DYNAMIC) != 0
3762 && aout_backend_info (input_bfd)->link_dynamic_object != NULL)
3763 {
3764 return ((*aout_backend_info (input_bfd)->link_dynamic_object)
3765 (finfo->info, input_bfd));
3766 }
3767
4c3721d5
ILT		 3768 /* Get the symbols. We probably have them already, unless
3769 finfo->info->keep_memory is false. */
5c8444f8 3770 if (! aout_get_external_symbols (input_bfd))
4c3721d5
ILT		 3771 return false;
3772
3773 sym_count = obj_aout_external_sym_count (input_bfd);
4c3721d5 3774
1afd2380
ILT		 3775 /* Write out the symbols and get a map of the new indices. The map
3776 is placed into finfo->symbol_map. */
3777 if (! aout_link_write_symbols (finfo, input_bfd))
3778 return false;
4c3721d5 3779
1afd2380
ILT		 3780 /* Relocate and write out the sections. These functions use the
3781 symbol map created by aout_link_write_symbols. */
4c3721d5
ILT		 3782 if (! aout_link_input_section (finfo, input_bfd,
3783 obj_textsec (input_bfd),
3784 &finfo->treloff,
1afd2380 3785 exec_hdr (input_bfd)->a_trsize)
4c3721d5
ILT		 3786 || ! aout_link_input_section (finfo, input_bfd,
3787 obj_datasec (input_bfd),
3788 &finfo->dreloff,
1afd2380
ILT		 3789 exec_hdr (input_bfd)->a_drsize))
3790 return false;
4c3721d5
ILT		 3791
3792 /* If we are not keeping memory, we don't need the symbols any
3793 longer. We still need them if we are keeping memory, because the
3794 strings in the hash table point into them. */
3795 if (! finfo->info->keep_memory)
3796 {
3797 if (! aout_link_free_symbols (input_bfd))
1afd2380 3798 return false;
4c3721d5
ILT		 3799 }
3800
3801 return true;
3802}
3803
3804/* Adjust and write out the symbols for an a.out file. Set the new
3805 symbol indices into a symbol_map. */
3806
3807static boolean
1afd2380 3808aout_link_write_symbols (finfo, input_bfd)
4c3721d5
ILT		 3809 struct aout_final_link_info *finfo;
3810 bfd *input_bfd;
4c3721d5
ILT		 3811{
3812 bfd *output_bfd;
3813 bfd_size_type sym_count;
3814 char *strings;
3815 enum bfd_link_strip strip;
3816 enum bfd_link_discard discard;
4c3721d5 3817 struct external_nlist *outsym;
d17fc4c9 3818 bfd_size_type strtab_index;
4c3721d5
ILT		 3819 register struct external_nlist *sym;
3820 struct external_nlist *sym_end;
3821 struct aout_link_hash_entry **sym_hash;
1afd2380 3822 int *symbol_map;
4c3721d5 3823 boolean pass;
ab0434c2 3824 boolean skip_next;
4c3721d5
ILT		 3825
3826 output_bfd = finfo->output_bfd;
3827 sym_count = obj_aout_external_sym_count (input_bfd);
3828 strings = obj_aout_external_strings (input_bfd);
3829 strip = finfo->info->strip;
3830 discard = finfo->info->discard;
1afd2380 3831 outsym = finfo->output_syms;
4c3721d5
ILT		 3832
3833 /* First write out a symbol for this object file, unless we are
3834 discarding such symbols. */
3835 if (strip != strip_all
3836 && (strip != strip_some
3837 || bfd_hash_lookup (finfo->info->keep_hash, input_bfd->filename,
3838 false, false) != NULL)
3839 && discard != discard_all)
3840 {
3841 bfd_h_put_8 (output_bfd, N_TEXT, outsym->e_type);
3842 bfd_h_put_8 (output_bfd, 0, outsym->e_other);
3843 bfd_h_put_16 (output_bfd, (bfd_vma) 0, outsym->e_desc);
1afd2380 3844 strtab_index = add_to_stringtab (output_bfd, finfo->strtab,
d17fc4c9
ILT		 3845 input_bfd->filename, false);
3846 if (strtab_index == (bfd_size_type) -1)
1afd2380 3847 return false;
d17fc4c9 3848 PUT_WORD (output_bfd, strtab_index, outsym->e_strx);
4c3721d5 3849 PUT_WORD (output_bfd,
2edc8357
ILT		 3850 (bfd_get_section_vma (output_bfd,
3851 obj_textsec (input_bfd)->output_section)
3852 + obj_textsec (input_bfd)->output_offset),
4c3721d5
ILT		 3853 outsym->e_value);
3854 ++obj_aout_external_sym_count (output_bfd);
3855 ++outsym;
3856 }
3857
3858 pass = false;
ab0434c2 3859 skip_next = false;
4c3721d5
ILT		 3860 sym = obj_aout_external_syms (input_bfd);
3861 sym_end = sym + sym_count;
3862 sym_hash = obj_aout_sym_hashes (input_bfd);
1afd2380 3863 symbol_map = finfo->symbol_map;
4c3721d5
ILT		 3864 for (; sym < sym_end; sym++, sym_hash++, symbol_map++)
3865 {
3866 const char *name;
3867 int type;
d6d6b18a 3868 struct aout_link_hash_entry *h;
4c3721d5
ILT		 3869 boolean skip;
3870 asection *symsec;
3871 bfd_vma val = 0;
d17fc4c9 3872 boolean copy;
4c3721d5
ILT		 3873
3874 *symbol_map = -1;
3875
3876 type = bfd_h_get_8 (input_bfd, sym->e_type);
3877 name = strings + GET_WORD (input_bfd, sym->e_strx);
3878
d6d6b18a
ILT		 3879 h = NULL;
3880
4c3721d5
ILT		 3881 if (pass)
3882 {
53155af1
ILT		 3883 /* Pass this symbol through. It is the target of an
3884 indirect or warning symbol. */
4c3721d5
ILT		 3885 val = GET_WORD (input_bfd, sym->e_value);
3886 pass = false;
3887 }
ab0434c2 3888 else if (skip_next)
53155af1
ILT		 3889 {
3890 /* Skip this symbol, which is the target of an indirect
3891 symbol that we have changed to no longer be an indirect
3892 symbol. */
ab0434c2 3893 skip_next = false;
53155af1
ILT		 3894 continue;
3895 }
4c3721d5
ILT		 3896 else
3897 {
53155af1 3898 struct aout_link_hash_entry *hresolve;
4c3721d5
ILT		 3899
3900 /* We have saved the hash table entry for this symbol, if
3901 there is one. Note that we could just look it up again
3902 in the hash table, provided we first check that it is an
3903 external symbol. */
3904 h = *sym_hash;
3905
3a5b50f4
ILT		 3906 /* If this is an indirect or warning symbol, then change
3907 hresolve to the base symbol. We also change *sym_hash so
3908 that the relocation routines relocate against the real
3909 symbol. */
53155af1
ILT		 3910 hresolve = h;
3911 if (h != (struct aout_link_hash_entry *) NULL
3a5b50f4
ILT		 3912 && (h->root.type == bfd_link_hash_indirect
3913 || h->root.type == bfd_link_hash_warning))
53155af1
ILT		 3914 {
3915 hresolve = (struct aout_link_hash_entry *) h->root.u.i.link;
118e8d1c
ILT		 3916 while (hresolve->root.type == bfd_link_hash_indirect
3917 || hresolve->root.type == bfd_link_hash_warning)
53155af1
ILT		 3918 hresolve = ((struct aout_link_hash_entry *)
3919 hresolve->root.u.i.link);
3920 *sym_hash = hresolve;
3921 }
3922
4c3721d5
ILT		 3923 /* If the symbol has already been written out, skip it. */
3924 if (h != (struct aout_link_hash_entry *) NULL
e85e8bfe 3925 && h->root.type != bfd_link_hash_warning
35fee729 3926 && h->written)
4c3721d5 3927 {
ab0434c2
ILT		 3928 if ((type & N_TYPE) == N_INDR
3929 || type == N_WARNING)
3930 skip_next = true;
4c3721d5
ILT		 3931 *symbol_map = h->indx;
3932 continue;
3933 }
3934
3935 /* See if we are stripping this symbol. */
3936 skip = false;
3937 switch (strip)
3938 {
3939 case strip_none:
3940 break;
3941 case strip_debugger:
3942 if ((type & N_STAB) != 0)
3943 skip = true;
3944 break;
3945 case strip_some:
3946 if (bfd_hash_lookup (finfo->info->keep_hash, name, false, false)
3947 == NULL)
3948 skip = true;
3949 break;
3950 case strip_all:
3951 skip = true;
3952 break;
3953 }
3954 if (skip)
3955 {
3956 if (h != (struct aout_link_hash_entry *) NULL)
35fee729 3957 h->written = true;
4c3721d5
ILT		 3958 continue;
3959 }
3960
3961 /* Get the value of the symbol. */
4298e311
ILT		 3962 if ((type & N_TYPE) == N_TEXT
3963 || type == N_WEAKT)
4c3721d5 3964 symsec = obj_textsec (input_bfd);
4298e311
ILT		 3965 else if ((type & N_TYPE) == N_DATA
3966 || type == N_WEAKD)
4c3721d5 3967 symsec = obj_datasec (input_bfd);
4298e311
ILT		 3968 else if ((type & N_TYPE) == N_BSS
3969 || type == N_WEAKB)
4c3721d5 3970 symsec = obj_bsssec (input_bfd);
4298e311
ILT		 3971 else if ((type & N_TYPE) == N_ABS
3972 || type == N_WEAKA)
4587b578 3973 symsec = bfd_abs_section_ptr;
53155af1
ILT		 3974 else if (((type & N_TYPE) == N_INDR
3975 && (hresolve == (struct aout_link_hash_entry *) NULL
3976 || (hresolve->root.type != bfd_link_hash_defined
6c97aedf 3977 && hresolve->root.type != bfd_link_hash_defweak
53155af1 3978 && hresolve->root.type != bfd_link_hash_common)))
4c3721d5
ILT		 3979 || type == N_WARNING)
3980 {
53155af1
ILT		 3981 /* Pass the next symbol through unchanged. The
3982 condition above for indirect symbols is so that if
3983 the indirect symbol was defined, we output it with
3984 the correct definition so the debugger will
3985 understand it. */
4c3721d5
ILT		 3986 pass = true;
3987 val = GET_WORD (input_bfd, sym->e_value);
3988 symsec = NULL;
3989 }
3990 else if ((type & N_STAB) != 0)
3991 {
3992 val = GET_WORD (input_bfd, sym->e_value);
3993 symsec = NULL;
3994 }
3995 else
3996 {
53155af1
ILT		 3997 /* If we get here with an indirect symbol, it means that
3998 we are outputting it with a real definition. In such
3999 a case we do not want to output the next symbol,
4000 which is the target of the indirection. */
4001 if ((type & N_TYPE) == N_INDR)
ab0434c2 4002 skip_next = true;
53155af1 4003
f4945271
ILT		 4004 symsec = NULL;
4005
53155af1
ILT		 4006 /* We need to get the value from the hash table. We use
4007 hresolve so that if we have defined an indirect
4008 symbol we output the final definition. */
4c3721d5 4009 if (h == (struct aout_link_hash_entry *) NULL)
f4945271
ILT		 4010 {
4011 switch (type & N_TYPE)
4012 {
4013 case N_SETT:
4014 symsec = obj_textsec (input_bfd);
4015 break;
4016 case N_SETD:
4017 symsec = obj_datasec (input_bfd);
4018 break;
4019 case N_SETB:
4020 symsec = obj_bsssec (input_bfd);
4021 break;
4022 case N_SETA:
4023 symsec = bfd_abs_section_ptr;
4024 break;
4025 default:
4026 val = 0;
4027 break;
4028 }
4029 }
6c97aedf
ILT		 4030 else if (hresolve->root.type == bfd_link_hash_defined
4031 || hresolve->root.type == bfd_link_hash_defweak)
4c3721d5 4032 {
53155af1 4033 asection *input_section;
4c3721d5
ILT		 4034 asection *output_section;
4035
6c97aedf
ILT		 4036 /* This case usually means a common symbol which was
4037 turned into a defined symbol. */
53155af1
ILT		 4038 input_section = hresolve->root.u.def.section;
4039 output_section = input_section->output_section;
4587b578 4040 BFD_ASSERT (bfd_is_abs_section (output_section)
4c3721d5 4041 || output_section->owner == output_bfd);
53155af1 4042 val = (hresolve->root.u.def.value
4c3721d5 4043 + bfd_get_section_vma (output_bfd, output_section)
53155af1 4044 + input_section->output_offset);
4c3721d5
ILT		 4045
4046 /* Get the correct type based on the section. If
4047 this is a constructed set, force it to be
4048 globally visible. */
4049 if (type == N_SETT
4050 || type == N_SETD
4051 || type == N_SETB
4052 || type == N_SETA)
4053 type |= N_EXT;
4054
4055 type &=~ N_TYPE;
4056
4057 if (output_section == obj_textsec (output_bfd))
6c97aedf
ILT		 4058 type |= (hresolve->root.type == bfd_link_hash_defined
4059 ? N_TEXT
4060 : N_WEAKT);
4c3721d5 4061 else if (output_section == obj_datasec (output_bfd))
6c97aedf
ILT		 4062 type |= (hresolve->root.type == bfd_link_hash_defined
4063 ? N_DATA
4064 : N_WEAKD);
4c3721d5 4065 else if (output_section == obj_bsssec (output_bfd))
6c97aedf
ILT		 4066 type |= (hresolve->root.type == bfd_link_hash_defined
4067 ? N_BSS
4068 : N_WEAKB);
4c3721d5 4069 else
6c97aedf
ILT		 4070 type |= (hresolve->root.type == bfd_link_hash_defined
4071 ? N_ABS
4072 : N_WEAKA);
4c3721d5 4073 }
53155af1
ILT		 4074 else if (hresolve->root.type == bfd_link_hash_common)
4075 val = hresolve->root.u.c.size;
6c97aedf 4076 else if (hresolve->root.type == bfd_link_hash_undefweak)
4298e311
ILT		 4077 {
4078 val = 0;
4079 type = N_WEAKU;
4080 }
4c3721d5
ILT		 4081 else
4082 val = 0;
4c3721d5
ILT		 4083 }
4084 if (symsec != (asection *) NULL)
4085 val = (symsec->output_section->vma
4086 + symsec->output_offset
4087 + (GET_WORD (input_bfd, sym->e_value)
4088 - symsec->vma));
4089
4090 /* If this is a global symbol set the written flag, and if
4091 it is a local symbol see if we should discard it. */
4092 if (h != (struct aout_link_hash_entry *) NULL)
4093 {
35fee729 4094 h->written = true;
4c3721d5
ILT		 4095 h->indx = obj_aout_external_sym_count (output_bfd);
4096 }
f4945271
ILT		 4097 else if ((type & N_TYPE) != N_SETT
4098 && (type & N_TYPE) != N_SETD
4099 && (type & N_TYPE) != N_SETB
4100 && (type & N_TYPE) != N_SETA)
4c3721d5
ILT		 4101 {
4102 switch (discard)
4103 {
4104 case discard_none:
4105 break;
4106 case discard_l:
4107 if (*name == *finfo->info->lprefix
4108 && (finfo->info->lprefix_len == 1
4109 || strncmp (name, finfo->info->lprefix,
4110 finfo->info->lprefix_len) == 0))
4111 skip = true;
4112 break;
4113 case discard_all:
4114 skip = true;
4115 break;
4116 }
4117 if (skip)
4118 {
4119 pass = false;
4120 continue;
4121 }
4122 }
4123 }
4124
4125 /* Copy this symbol into the list of symbols we are going to
4126 write out. */
4127 bfd_h_put_8 (output_bfd, type, outsym->e_type);
4128 bfd_h_put_8 (output_bfd, bfd_h_get_8 (input_bfd, sym->e_other),
4129 outsym->e_other);
4130 bfd_h_put_16 (output_bfd, bfd_h_get_16 (input_bfd, sym->e_desc),
4131 outsym->e_desc);
d17fc4c9 4132 copy = false;
d6d6b18a
ILT		 4133 if (! finfo->info->keep_memory)
4134 {
4135 /* name points into a string table which we are going to
4136 free. If there is a hash table entry, use that string.
4137 Otherwise, copy name into memory. */
4138 if (h != (struct aout_link_hash_entry *) NULL)
1afd2380 4139 name = h->root.root.string;
d6d6b18a 4140 else
d17fc4c9 4141 copy = true;
d6d6b18a 4142 }
1afd2380 4143 strtab_index = add_to_stringtab (output_bfd, finfo->strtab,
d17fc4c9
ILT		 4144 name, copy);
4145 if (strtab_index == (bfd_size_type) -1)
1afd2380 4146 return false;
d17fc4c9 4147 PUT_WORD (output_bfd, strtab_index, outsym->e_strx);
4c3721d5
ILT		 4148 PUT_WORD (output_bfd, val, outsym->e_value);
4149 *symbol_map = obj_aout_external_sym_count (output_bfd);
4150 ++obj_aout_external_sym_count (output_bfd);
4151 ++outsym;
4152 }
4153
4154 /* Write out the output symbols we have just constructed. */
1afd2380 4155 if (outsym > finfo->output_syms)
4c3721d5
ILT		 4156 {
4157 bfd_size_type outsym_count;
4158
4159 if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0)
1afd2380
ILT		 4160 return false;
4161 outsym_count = outsym - finfo->output_syms;
4162 if (bfd_write ((PTR) finfo->output_syms,
4163 (bfd_size_type) EXTERNAL_NLIST_SIZE,
4c3721d5
ILT		 4164 (bfd_size_type) outsym_count, output_bfd)
4165 != outsym_count * EXTERNAL_NLIST_SIZE)
1afd2380 4166 return false;
4c3721d5
ILT		 4167 finfo->symoff += outsym_count * EXTERNAL_NLIST_SIZE;
4168 }
4169
4170 return true;
4171}
4172
4173/* Write out a symbol that was not associated with an a.out input
4174 object. */
4175
4176static boolean
4177aout_link_write_other_symbol (h, data)
4178 struct aout_link_hash_entry *h;
4179 PTR data;
4180{
4181 struct aout_final_link_info *finfo = (struct aout_final_link_info *) data;
4182 bfd *output_bfd;
4183 int type;
4184 bfd_vma val;
4185 struct external_nlist outsym;
d17fc4c9 4186 bfd_size_type indx;
4c3721d5 4187
e85e8bfe
ILT		 4188 output_bfd = finfo->output_bfd;
4189
4190 if (aout_backend_info (output_bfd)->write_dynamic_symbol != NULL)
4191 {
4192 if (! ((*aout_backend_info (output_bfd)->write_dynamic_symbol)
4193 (output_bfd, finfo->info, h)))
4194 {
4195 /* FIXME: No way to handle errors. */
4196 abort ();
4197 }
4198 }
4199
35fee729 4200 if (h->written)
4c3721d5
ILT		 4201 return true;
4202
35fee729 4203 h->written = true;
9783e04a 4204
74942465
ILT		 4205 /* An indx of -2 means the symbol must be written. */
4206 if (h->indx != -2
4207 && (finfo->info->strip == strip_all
4208 || (finfo->info->strip == strip_some
4209 && bfd_hash_lookup (finfo->info->keep_hash, h->root.root.string,
4210 false, false) == NULL)))
9783e04a
DM		 4211 return true;
4212
4c3721d5
ILT		 4213 switch (h->root.type)
4214 {
4215 default:
4c3721d5
ILT		 4216 abort ();
4217 /* Avoid variable not initialized warnings. */
4218 return true;
f4945271
ILT		 4219 case bfd_link_hash_new:
4220 /* This can happen for set symbols when sets are not being
4221 built. */
4222 return true;
4c3721d5
ILT		 4223 case bfd_link_hash_undefined:
4224 type = N_UNDF | N_EXT;
4225 val = 0;
4226 break;
4227 case bfd_link_hash_defined:
6c97aedf 4228 case bfd_link_hash_defweak:
4c3721d5
ILT		 4229 {
4230 asection *sec;
4231
4f019d04 4232 sec = h->root.u.def.section->output_section;
4587b578 4233 BFD_ASSERT (bfd_is_abs_section (sec)
4c3721d5
ILT		 4234 || sec->owner == output_bfd);
4235 if (sec == obj_textsec (output_bfd))
6c97aedf 4236 type = h->root.type == bfd_link_hash_defined ? N_TEXT : N_WEAKT;
4c3721d5 4237 else if (sec == obj_datasec (output_bfd))
6c97aedf 4238 type = h->root.type == bfd_link_hash_defined ? N_DATA : N_WEAKD;
4c3721d5 4239 else if (sec == obj_bsssec (output_bfd))
6c97aedf 4240 type = h->root.type == bfd_link_hash_defined ? N_BSS : N_WEAKB;
4c3721d5 4241 else
6c97aedf
ILT		 4242 type = h->root.type == bfd_link_hash_defined ? N_ABS : N_WEAKA;
4243 type |= N_EXT;
4c3721d5 4244 val = (h->root.u.def.value
4f019d04
ILT		 4245 + sec->vma
4246 + h->root.u.def.section->output_offset);
4c3721d5
ILT		 4247 }
4248 break;
4249 case bfd_link_hash_common:
4250 type = N_UNDF | N_EXT;
4251 val = h->root.u.c.size;
4252 break;
6c97aedf 4253 case bfd_link_hash_undefweak:
4298e311
ILT		 4254 type = N_WEAKU;
4255 val = 0;
4c3721d5
ILT		 4256 case bfd_link_hash_indirect:
4257 case bfd_link_hash_warning:
4258 /* FIXME: Ignore these for now. The circumstances under which
4259 they should be written out are not clear to me. */
4260 return true;
4261 }
4262
4263 bfd_h_put_8 (output_bfd, type, outsym.e_type);
4264 bfd_h_put_8 (output_bfd, 0, outsym.e_other);
4265 bfd_h_put_16 (output_bfd, 0, outsym.e_desc);
1afd2380 4266 indx = add_to_stringtab (output_bfd, finfo->strtab, h->root.root.string,
d17fc4c9
ILT		 4267 false);
4268 if (indx == (bfd_size_type) -1)
4269 {
4270 /* FIXME: No way to handle errors. */
4271 abort ();
4272 }
4273 PUT_WORD (output_bfd, indx, outsym.e_strx);
4c3721d5
ILT		 4274 PUT_WORD (output_bfd, val, outsym.e_value);
4275
4276 if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0
4277 || bfd_write ((PTR) &outsym, (bfd_size_type) EXTERNAL_NLIST_SIZE,
4278 (bfd_size_type) 1, output_bfd) != EXTERNAL_NLIST_SIZE)
4279 {
4280 /* FIXME: No way to handle errors. */
4281 abort ();
4282 }
4283
4284 finfo->symoff += EXTERNAL_NLIST_SIZE;
4285 h->indx = obj_aout_external_sym_count (output_bfd);
4286 ++obj_aout_external_sym_count (output_bfd);
4287
4288 return true;
4289}
4290
4291/* Link an a.out section into the output file. */
4292
4293static boolean
4294aout_link_input_section (finfo, input_bfd, input_section, reloff_ptr,
1afd2380 4295 rel_size)
4c3721d5
ILT		 4296 struct aout_final_link_info *finfo;
4297 bfd *input_bfd;
4298 asection *input_section;
4299 file_ptr *reloff_ptr;
4300 bfd_size_type rel_size;
4c3721d5
ILT		 4301{
4302 bfd_size_type input_size;
e85e8bfe 4303 PTR relocs;
4c3721d5
ILT		 4304
4305 /* Get the section contents. */
4306 input_size = bfd_section_size (input_bfd, input_section);
1afd2380
ILT		 4307 if (! bfd_get_section_contents (input_bfd, input_section,
4308 (PTR) finfo->contents,
4c3721d5 4309 (file_ptr) 0, input_size))
1afd2380 4310 return false;
4c3721d5 4311
e85e8bfe
ILT		 4312 /* Read in the relocs if we haven't already done it. */
4313 if (aout_section_data (input_section) != NULL
4314 && aout_section_data (input_section)->relocs != NULL)
4315 relocs = aout_section_data (input_section)->relocs;
4316 else
80425e6c 4317 {
1afd2380 4318 relocs = finfo->relocs;
875e4716
ILT		 4319 if (rel_size > 0)
4320 {
4321 if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0
4322 || bfd_read (relocs, 1, rel_size, input_bfd) != rel_size)
4323 return false;
4324 }
80425e6c 4325 }
4c3721d5
ILT		 4326
4327 /* Relocate the section contents. */
4328 if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE)
4329 {
4330 if (! aout_link_input_section_std (finfo, input_bfd, input_section,
4331 (struct reloc_std_external *) relocs,
1afd2380
ILT		 4332 rel_size, finfo->contents))
4333 return false;
4c3721d5
ILT		 4334 }
4335 else
4336 {
4337 if (! aout_link_input_section_ext (finfo, input_bfd, input_section,
4338 (struct reloc_ext_external *) relocs,
1afd2380
ILT		 4339 rel_size, finfo->contents))
4340 return false;
4c3721d5
ILT		 4341 }
4342
4343 /* Write out the section contents. */
4344 if (! bfd_set_section_contents (finfo->output_bfd,
4345 input_section->output_section,
1afd2380 4346 (PTR) finfo->contents,
728472f1 4347 input_section->output_offset,
4c3721d5 4348 input_size))
1afd2380 4349 return false;
4c3721d5
ILT		 4350
4351 /* If we are producing relocateable output, the relocs were
4352 modified, and we now write them out. */
875e4716 4353 if (finfo->info->relocateable && rel_size > 0)
4c3721d5
ILT		 4354 {
4355 if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0)
1afd2380 4356 return false;
4c3721d5
ILT		 4357 if (bfd_write (relocs, (bfd_size_type) 1, rel_size, finfo->output_bfd)
4358 != rel_size)
1afd2380 4359 return false;
4c3721d5
ILT		 4360 *reloff_ptr += rel_size;
4361
4362 /* Assert that the relocs have not run into the symbols, and
4363 that if these are the text relocs they have not run into the
4364 data relocs. */
4365 BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd)
4366 && (reloff_ptr != &finfo->treloff
4367 || (*reloff_ptr
4368 <= obj_datasec (finfo->output_bfd)->rel_filepos)));
4369 }
4370
4371 return true;
4372}
4373
4374/* Get the section corresponding to a reloc index. */
4375
4376static INLINE asection *
4377aout_reloc_index_to_section (abfd, indx)
4378 bfd *abfd;
4379 int indx;
4380{
4381 switch (indx & N_TYPE)
4382 {
4383 case N_TEXT:
4384 return obj_textsec (abfd);
4385 case N_DATA:
4386 return obj_datasec (abfd);
4387 case N_BSS:
4388 return obj_bsssec (abfd);
4389 case N_ABS:
fa2302b8 4390 case N_UNDF:
4587b578 4391 return bfd_abs_section_ptr;
4c3721d5
ILT		 4392 default:
4393 abort ();
4394 }
4395}
4396
4397/* Relocate an a.out section using standard a.out relocs. */
4398
4399static boolean
4400aout_link_input_section_std (finfo, input_bfd, input_section, relocs,
1afd2380 4401 rel_size, contents)
4c3721d5
ILT		 4402 struct aout_final_link_info *finfo;
4403 bfd *input_bfd;
4404 asection *input_section;
4405 struct reloc_std_external *relocs;
4406 bfd_size_type rel_size;
4407 bfd_byte *contents;
4c3721d5 4408{
e85e8bfe
ILT		 4409 boolean (*check_dynamic_reloc) PARAMS ((struct bfd_link_info *,
4410 bfd *, asection *,
4411 struct aout_link_hash_entry *,
ae115e51
ILT		 4412 PTR, bfd_byte *, boolean *,
4413 bfd_vma *));
4c3721d5
ILT		 4414 bfd *output_bfd;
4415 boolean relocateable;
4416 struct external_nlist *syms;
4417 char *strings;
4418 struct aout_link_hash_entry **sym_hashes;
1afd2380 4419 int *symbol_map;
4c3721d5
ILT		 4420 bfd_size_type reloc_count;
4421 register struct reloc_std_external *rel;
4422 struct reloc_std_external *rel_end;
4423
4424 output_bfd = finfo->output_bfd;
e85e8bfe 4425 check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc;
4c3721d5
ILT		 4426
4427 BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE);
4428 BFD_ASSERT (input_bfd->xvec->header_byteorder_big_p
4429 == output_bfd->xvec->header_byteorder_big_p);
4430
4431 relocateable = finfo->info->relocateable;
4432 syms = obj_aout_external_syms (input_bfd);
4433 strings = obj_aout_external_strings (input_bfd);
4434 sym_hashes = obj_aout_sym_hashes (input_bfd);
1afd2380 4435 symbol_map = finfo->symbol_map;
4c3721d5
ILT		 4436
4437 reloc_count = rel_size / RELOC_STD_SIZE;
4438 rel = relocs;
4439 rel_end = rel + reloc_count;
4440 for (; rel < rel_end; rel++)
4441 {
4442 bfd_vma r_addr;
4443 int r_index;
4444 int r_extern;
4445 int r_pcrel;
ae115e51 4446 int r_baserel = 0;
f42fe159 4447 reloc_howto_type *howto;
ae115e51 4448 struct aout_link_hash_entry *h = NULL;
4c3721d5
ILT		 4449 bfd_vma relocation;
4450 bfd_reloc_status_type r;
4451
4452 r_addr = GET_SWORD (input_bfd, rel->r_address);
4453
f42fe159
ILT		 4454#ifdef MY_reloc_howto
4455 howto = MY_reloc_howto(input_bfd, rel, r_index, r_extern, r_pcrel);
4456#else
ae115e51
ILT		 4457 {
4458 int r_jmptable;
4459 int r_relative;
4460 int r_length;
4461 unsigned int howto_idx;
4c3721d5 4462
ae115e51
ILT		 4463 if (input_bfd->xvec->header_byteorder_big_p)
4464 {
4465 r_index = ((rel->r_index[0] << 16)
4466 | (rel->r_index[1] << 8)
4467 | rel->r_index[2]);
4468 r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
4469 r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
4470 r_baserel = (0 != (rel->r_type[0] & RELOC_STD_BITS_BASEREL_BIG));
4471 r_jmptable= (0 != (rel->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG));
4472 r_relative= (0 != (rel->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG));
4473 r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_BIG)
4474 >> RELOC_STD_BITS_LENGTH_SH_BIG);
4475 }
4476 else
4477 {
4478 r_index = ((rel->r_index[2] << 16)
4479 | (rel->r_index[1] << 8)
4480 | rel->r_index[0]);
4481 r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
4482 r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
4483 r_baserel = (0 != (rel->r_type[0]
4484 & RELOC_STD_BITS_BASEREL_LITTLE));
4485 r_jmptable= (0 != (rel->r_type[0]
4486 & RELOC_STD_BITS_JMPTABLE_LITTLE));
4487 r_relative= (0 != (rel->r_type[0]
4488 & RELOC_STD_BITS_RELATIVE_LITTLE));
4489 r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE)
4490 >> RELOC_STD_BITS_LENGTH_SH_LITTLE);
4491 }
4492
4493 howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel
4494 + 16 * r_jmptable + 32 * r_relative);
4495 BFD_ASSERT (howto_idx < TABLE_SIZE (howto_table_std));
4496 howto = howto_table_std + howto_idx;
4497 }
f42fe159 4498#endif
4c3721d5
ILT		 4499
4500 if (relocateable)
4501 {
4502 /* We are generating a relocateable output file, and must
4503 modify the reloc accordingly. */
4504 if (r_extern)
4505 {
4c3721d5
ILT		 4506 /* If we know the symbol this relocation is against,
4507 convert it into a relocation against a section. This
4508 is what the native linker does. */
4509 h = sym_hashes[r_index];
4510 if (h != (struct aout_link_hash_entry *) NULL
6c97aedf
ILT		 4511 && (h->root.type == bfd_link_hash_defined
4512 || h->root.type == bfd_link_hash_defweak))
4c3721d5
ILT		 4513 {
4514 asection *output_section;
4515
4516 /* Change the r_extern value. */
4517 if (output_bfd->xvec->header_byteorder_big_p)
4518 rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_BIG;
4519 else
4520 rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_LITTLE;
4521
4522 /* Compute a new r_index. */
4523 output_section = h->root.u.def.section->output_section;
4524 if (output_section == obj_textsec (output_bfd))
4525 r_index = N_TEXT;
4526 else if (output_section == obj_datasec (output_bfd))
4527 r_index = N_DATA;
4528 else if (output_section == obj_bsssec (output_bfd))
4529 r_index = N_BSS;
4530 else
4531 r_index = N_ABS;
4532
4533 /* Add the symbol value and the section VMA to the
4534 addend stored in the contents. */
4535 relocation = (h->root.u.def.value
4536 + output_section->vma
4537 + h->root.u.def.section->output_offset);
4538 }
4539 else
4540 {
4541 /* We must change r_index according to the symbol
4542 map. */
4543 r_index = symbol_map[r_index];
4544
4545 if (r_index == -1)
4546 {
74942465
ILT		 4547 if (h != NULL)
4548 {
4549 /* We decided to strip this symbol, but it
4550 turns out that we can't. Note that we
4551 lose the other and desc information here.
4552 I don't think that will ever matter for a
4553 global symbol. */
4554 if (h->indx < 0)
4555 {
4556 h->indx = -2;
4557 h->written = false;
4558 if (! aout_link_write_other_symbol (h,
4559 (PTR) finfo))
4560 return false;
4561 }
4562 r_index = h->indx;
4563 }
4564 else
4565 {
4566 const char *name;
4567
4568 name = strings + GET_WORD (input_bfd,
4569 syms[r_index].e_strx);
4570 if (! ((*finfo->info->callbacks->unattached_reloc)
4571 (finfo->info, name, input_bfd, input_section,
4572 r_addr)))
4573 return false;
4574 r_index = 0;
4575 }
4c3721d5
ILT		 4576 }
4577
4578 relocation = 0;
4579 }
4580
4581 /* Write out the new r_index value. */
4582 if (output_bfd->xvec->header_byteorder_big_p)
4583 {
4584 rel->r_index[0] = r_index >> 16;
4585 rel->r_index[1] = r_index >> 8;
4586 rel->r_index[2] = r_index;
4587 }
4588 else
4589 {
4590 rel->r_index[2] = r_index >> 16;
4591 rel->r_index[1] = r_index >> 8;
4592 rel->r_index[0] = r_index;
4593 }
4594 }
4595 else
4596 {
4597 asection *section;
4598
4599 /* This is a relocation against a section. We must
4600 adjust by the amount that the section moved. */
4601 section = aout_reloc_index_to_section (input_bfd, r_index);
4602 relocation = (section->output_section->vma
4603 + section->output_offset
4604 - section->vma);
4605 }
4606
4607 /* Change the address of the relocation. */
4608 PUT_WORD (output_bfd,
4609 r_addr + input_section->output_offset,
4610 rel->r_address);
4611
4612 /* Adjust a PC relative relocation by removing the reference
e68de5d5
ILT		 4613 to the original address in the section and including the
4614 reference to the new address. */
4c3721d5 4615 if (r_pcrel)
e68de5d5
ILT		 4616 relocation -= (input_section->output_section->vma
4617 + input_section->output_offset
4618 - input_section->vma);
4c3721d5 4619
943fbd5b
KR		 4620#ifdef MY_relocatable_reloc
4621 MY_relocatable_reloc (howto, output_bfd, rel, relocation, r_addr);
4622#endif
4623
4c3721d5
ILT		 4624 if (relocation == 0)
4625 r = bfd_reloc_ok;
4626 else
34e9ffbc 4627 r = MY_relocate_contents (howto,
4c3721d5
ILT		 4628 input_bfd, relocation,
4629 contents + r_addr);
4630 }
4631 else
4632 {
ae115e51
ILT		 4633 boolean hundef;
4634
4c3721d5
ILT		 4635 /* We are generating an executable, and must do a full
4636 relocation. */
ae115e51 4637 hundef = false;
4c3721d5
ILT		 4638 if (r_extern)
4639 {
4c3721d5 4640 h = sym_hashes[r_index];
e85e8bfe 4641
4c3721d5 4642 if (h != (struct aout_link_hash_entry *) NULL
6c97aedf
ILT		 4643 && (h->root.type == bfd_link_hash_defined
4644 || h->root.type == bfd_link_hash_defweak))
4c3721d5
ILT		 4645 {
4646 relocation = (h->root.u.def.value
4647 + h->root.u.def.section->output_section->vma
4648 + h->root.u.def.section->output_offset);
4649 }
4298e311 4650 else if (h != (struct aout_link_hash_entry *) NULL
6c97aedf 4651 && h->root.type == bfd_link_hash_undefweak)
4298e311 4652 relocation = 0;
4c3721d5
ILT		 4653 else
4654 {
ae115e51 4655 hundef = true;
4c3721d5
ILT		 4656 relocation = 0;
4657 }
4658 }
4659 else
4660 {
4661 asection *section;
4662
4663 section = aout_reloc_index_to_section (input_bfd, r_index);
4664 relocation = (section->output_section->vma
4665 + section->output_offset
4666 - section->vma);
e68de5d5
ILT		 4667 if (r_pcrel)
4668 relocation += input_section->vma;
4c3721d5
ILT		 4669 }
4670
ae115e51
ILT		 4671 if (check_dynamic_reloc != NULL)
4672 {
4673 boolean skip;
4674
4675 if (! ((*check_dynamic_reloc)
4676 (finfo->info, input_bfd, input_section, h,
4677 (PTR) rel, contents, &skip, &relocation)))
4678 return false;
4679 if (skip)
4680 continue;
4681 }
4682
4683 /* Now warn if a global symbol is undefined. We could not
4684 do this earlier, because check_dynamic_reloc might want
4685 to skip this reloc. */
4686 if (hundef && ! finfo->info->shared && ! r_baserel)
4687 {
4688 const char *name;
4689
4690 name = strings + GET_WORD (input_bfd, syms[r_index].e_strx);
4691 if (! ((*finfo->info->callbacks->undefined_symbol)
4692 (finfo->info, name, input_bfd, input_section, r_addr)))
4693 return false;
4694 }
4695
34e9ffbc 4696 r = MY_final_link_relocate (howto,
4c3721d5
ILT		 4697 input_bfd, input_section,
4698 contents, r_addr, relocation,
4699 (bfd_vma) 0);
4700 }
4701
4702 if (r != bfd_reloc_ok)
4703 {
4704 switch (r)
4705 {
4706 default:
4707 case bfd_reloc_outofrange:
4708 abort ();
4709 case bfd_reloc_overflow:
4991ebb9
ILT		 4710 {
4711 const char *name;
4712
4713 if (r_extern)
4714 name = strings + GET_WORD (input_bfd,
4715 syms[r_index].e_strx);
4716 else
4717 {
4718 asection *s;
4719
4720 s = aout_reloc_index_to_section (input_bfd, r_index);
4721 name = bfd_section_name (input_bfd, s);
4722 }
4723 if (! ((*finfo->info->callbacks->reloc_overflow)
f42fe159 4724 (finfo->info, name, howto->name,
4991ebb9
ILT		 4725 (bfd_vma) 0, input_bfd, input_section, r_addr)))
4726 return false;
4727 }
4c3721d5
ILT		 4728 break;
4729 }
4730 }
4731 }
4732
4733 return true;
4734}
4735
4736/* Relocate an a.out section using extended a.out relocs. */
4737
4738static boolean
4739aout_link_input_section_ext (finfo, input_bfd, input_section, relocs,
1afd2380 4740 rel_size, contents)
4c3721d5
ILT		 4741 struct aout_final_link_info *finfo;
4742 bfd *input_bfd;
4743 asection *input_section;
4744 struct reloc_ext_external *relocs;
4745 bfd_size_type rel_size;
4746 bfd_byte *contents;
4c3721d5 4747{
e85e8bfe
ILT		 4748 boolean (*check_dynamic_reloc) PARAMS ((struct bfd_link_info *,
4749 bfd *, asection *,
4750 struct aout_link_hash_entry *,
ae115e51
ILT		 4751 PTR, bfd_byte *, boolean *,
4752 bfd_vma *));
4c3721d5
ILT		 4753 bfd *output_bfd;
4754 boolean relocateable;
4755 struct external_nlist *syms;
4756 char *strings;
4757 struct aout_link_hash_entry **sym_hashes;
1afd2380 4758 int *symbol_map;
4c3721d5
ILT		 4759 bfd_size_type reloc_count;
4760 register struct reloc_ext_external *rel;
4761 struct reloc_ext_external *rel_end;
4762
4763 output_bfd = finfo->output_bfd;
e85e8bfe 4764 check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc;
4c3721d5
ILT		 4765
4766 BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_EXT_SIZE);
4767 BFD_ASSERT (input_bfd->xvec->header_byteorder_big_p
4768 == output_bfd->xvec->header_byteorder_big_p);
4769
4770 relocateable = finfo->info->relocateable;
4771 syms = obj_aout_external_syms (input_bfd);
4772 strings = obj_aout_external_strings (input_bfd);
4773 sym_hashes = obj_aout_sym_hashes (input_bfd);
1afd2380 4774 symbol_map = finfo->symbol_map;
4c3721d5
ILT		 4775
4776 reloc_count = rel_size / RELOC_EXT_SIZE;
4777 rel = relocs;
4778 rel_end = rel + reloc_count;
4779 for (; rel < rel_end; rel++)
4780 {
4781 bfd_vma r_addr;
4782 int r_index;
4783 int r_extern;
ae115e51 4784 unsigned int r_type;
4c3721d5 4785 bfd_vma r_addend;
ae115e51
ILT		 4786 struct aout_link_hash_entry *h = NULL;
4787 asection *r_section = NULL;
4c3721d5
ILT		 4788 bfd_vma relocation;
4789
4790 r_addr = GET_SWORD (input_bfd, rel->r_address);
4791
4792 if (input_bfd->xvec->header_byteorder_big_p)
4793 {
4794 r_index = ((rel->r_index[0] << 16)
4795 | (rel->r_index[1] << 8)
4796 | rel->r_index[2]);
4797 r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG));
4798 r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
4799 >> RELOC_EXT_BITS_TYPE_SH_BIG);
4800 }
4801 else
4802 {
4803 r_index = ((rel->r_index[2] << 16)
4804 | (rel->r_index[1] << 8)
4805 | rel->r_index[0]);
4806 r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE));
4807 r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
4808 >> RELOC_EXT_BITS_TYPE_SH_LITTLE);
4809 }
4810
4811 r_addend = GET_SWORD (input_bfd, rel->r_addend);
4812
ae115e51 4813 BFD_ASSERT (r_type < TABLE_SIZE (howto_table_ext));
e68de5d5 4814
4c3721d5
ILT		 4815 if (relocateable)
4816 {
4817 /* We are generating a relocateable output file, and must
4818 modify the reloc accordingly. */
4819 if (r_extern)
4820 {
4c3721d5
ILT		 4821 /* If we know the symbol this relocation is against,
4822 convert it into a relocation against a section. This
4823 is what the native linker does. */
4824 h = sym_hashes[r_index];
4825 if (h != (struct aout_link_hash_entry *) NULL
6c97aedf
ILT		 4826 && (h->root.type == bfd_link_hash_defined
4827 || h->root.type == bfd_link_hash_defweak))
4c3721d5
ILT		 4828 {
4829 asection *output_section;
4830
4831 /* Change the r_extern value. */
4832 if (output_bfd->xvec->header_byteorder_big_p)
4833 rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_BIG;
4834 else
4835 rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_LITTLE;
4836
4837 /* Compute a new r_index. */
4838 output_section = h->root.u.def.section->output_section;
4839 if (output_section == obj_textsec (output_bfd))
4840 r_index = N_TEXT;
4841 else if (output_section == obj_datasec (output_bfd))
4842 r_index = N_DATA;
4843 else if (output_section == obj_bsssec (output_bfd))
4844 r_index = N_BSS;
4845 else
4846 r_index = N_ABS;
4847
4848 /* Add the symbol value and the section VMA to the
4849 addend. */
4850 relocation = (h->root.u.def.value
4851 + output_section->vma
4852 + h->root.u.def.section->output_offset);
e68de5d5
ILT		 4853
4854 /* Now RELOCATION is the VMA of the final
4855 destination. If this is a PC relative reloc,
4856 then ADDEND is the negative of the source VMA.
4857 We want to set ADDEND to the difference between
4858 the destination VMA and the source VMA, which
4859 means we must adjust RELOCATION by the change in
4860 the source VMA. This is done below. */
4c3721d5
ILT		 4861 }
4862 else
4863 {
4864 /* We must change r_index according to the symbol
4865 map. */
4866 r_index = symbol_map[r_index];
4867
4868 if (r_index == -1)
4869 {
74942465
ILT		 4870 if (h != NULL)
4871 {
4872 /* We decided to strip this symbol, but it
4873 turns out that we can't. Note that we
4874 lose the other and desc information here.
4875 I don't think that will ever matter for a
4876 global symbol. */
4877 if (h->indx < 0)
4878 {
4879 h->indx = -2;
4880 h->written = false;
4881 if (! aout_link_write_other_symbol (h,
4882 (PTR) finfo))
4883 return false;
4884 }
4885 r_index = h->indx;
4886 }
4887 else
4888 {
4889 const char *name;
4890
4891 name = strings + GET_WORD (input_bfd,
4892 syms[r_index].e_strx);
4893 if (! ((*finfo->info->callbacks->unattached_reloc)
4894 (finfo->info, name, input_bfd, input_section,
4895 r_addr)))
4896 return false;
4897 r_index = 0;
4898 }
4c3721d5
ILT		 4899 }
4900
4901 relocation = 0;
e68de5d5
ILT		 4902
4903 /* If this is a PC relative reloc, then the addend
4904 is the negative of the source VMA. We must
4905 adjust it by the change in the source VMA. This
4906 is done below. */
4c3721d5
ILT		 4907 }
4908
4909 /* Write out the new r_index value. */
4910 if (output_bfd->xvec->header_byteorder_big_p)
4911 {
4912 rel->r_index[0] = r_index >> 16;
4913 rel->r_index[1] = r_index >> 8;
4914 rel->r_index[2] = r_index;
4915 }
4916 else
4917 {
4918 rel->r_index[2] = r_index >> 16;
4919 rel->r_index[1] = r_index >> 8;
4920 rel->r_index[0] = r_index;
4921 }
4922 }
4923 else
4924 {
4c3721d5
ILT		 4925 /* This is a relocation against a section. We must
4926 adjust by the amount that the section moved. */
ae115e51
ILT		 4927 r_section = aout_reloc_index_to_section (input_bfd, r_index);
4928 relocation = (r_section->output_section->vma
4929 + r_section->output_offset
4930 - r_section->vma);
4c3721d5 4931
e68de5d5
ILT		 4932 /* If this is a PC relative reloc, then the addend is
4933 the difference in VMA between the destination and the
4934 source. We have just adjusted for the change in VMA
4935 of the destination, so we must also adjust by the
4936 change in VMA of the source. This is done below. */
4c3721d5
ILT		 4937 }
4938
e68de5d5
ILT		 4939 /* As described above, we must always adjust a PC relative
4940 reloc by the change in VMA of the source. */
4941 if (howto_table_ext[r_type].pc_relative)
4942 relocation -= (input_section->output_section->vma
4943 + input_section->output_offset
4944 - input_section->vma);
4945
4c3721d5
ILT		 4946 /* Change the addend if necessary. */
4947 if (relocation != 0)
4948 PUT_WORD (output_bfd, r_addend + relocation, rel->r_addend);
4949
4950 /* Change the address of the relocation. */
4951 PUT_WORD (output_bfd,
4952 r_addr + input_section->output_offset,
4953 rel->r_address);
4954 }
4955 else
4956 {
ae115e51 4957 boolean hundef;
4c3721d5
ILT		 4958 bfd_reloc_status_type r;
4959
4960 /* We are generating an executable, and must do a full
4961 relocation. */
ae115e51 4962 hundef = false;
4c3721d5
ILT		 4963 if (r_extern)
4964 {
4c3721d5 4965 h = sym_hashes[r_index];
e85e8bfe 4966
4c3721d5 4967 if (h != (struct aout_link_hash_entry *) NULL
6c97aedf
ILT		 4968 && (h->root.type == bfd_link_hash_defined
4969 || h->root.type == bfd_link_hash_defweak))
4c3721d5
ILT		 4970 {
4971 relocation = (h->root.u.def.value
4972 + h->root.u.def.section->output_section->vma
4973 + h->root.u.def.section->output_offset);
4974 }
4298e311 4975 else if (h != (struct aout_link_hash_entry *) NULL
6c97aedf 4976 && h->root.type == bfd_link_hash_undefweak)
4298e311 4977 relocation = 0;
4c3721d5
ILT		 4978 else
4979 {
ae115e51 4980 hundef = true;
4c3721d5
ILT		 4981 relocation = 0;
4982 }
4983 }
ae115e51
ILT		 4984 else if (r_type == RELOC_BASE10
4985 || r_type == RELOC_BASE13
4986 || r_type == RELOC_BASE22)
4987 {
4988 struct external_nlist *sym;
4989 int type;
4990
4991 /* For base relative relocs, r_index is always an index
4992 into the symbol table, even if r_extern is 0. */
4993 sym = syms + r_index;
4994 type = bfd_h_get_8 (input_bfd, sym->e_type);
4995 if ((type & N_TYPE) == N_TEXT
4996 || type == N_WEAKT)
4997 r_section = obj_textsec (input_bfd);
4998 else if ((type & N_TYPE) == N_DATA
4999 || type == N_WEAKD)
5000 r_section = obj_datasec (input_bfd);
5001 else if ((type & N_TYPE) == N_BSS
5002 || type == N_WEAKB)
5003 r_section = obj_bsssec (input_bfd);
5004 else if ((type & N_TYPE) == N_ABS
5005 || type == N_WEAKA)
5006 r_section = bfd_abs_section_ptr;
5007 else
5008 abort ();
5009 relocation = (r_section->output_section->vma
5010 + r_section->output_offset
5011 + (GET_WORD (input_bfd, sym->e_value)
5012 - r_section->vma));
5013 }
4c3721d5
ILT		 5014 else
5015 {
ae115e51 5016 r_section = aout_reloc_index_to_section (input_bfd, r_index);
e68de5d5
ILT		 5017
5018 /* If this is a PC relative reloc, then R_ADDEND is the
5019 difference between the two vmas, or
5020 old_dest_sec + old_dest_off - (old_src_sec + old_src_off)
5021 where
5022 old_dest_sec == section->vma
5023 and
5024 old_src_sec == input_section->vma
5025 and
5026 old_src_off == r_addr
5027
5028 _bfd_final_link_relocate expects RELOCATION +
5029 R_ADDEND to be the VMA of the destination minus
5030 r_addr (the minus r_addr is because this relocation
5031 is not pcrel_offset, which is a bit confusing and
5032 should, perhaps, be changed), or
5033 new_dest_sec
5034 where
5035 new_dest_sec == output_section->vma + output_offset
5036 We arrange for this to happen by setting RELOCATION to
5037 new_dest_sec + old_src_sec - old_dest_sec
5038
5039 If this is not a PC relative reloc, then R_ADDEND is
5040 simply the VMA of the destination, so we set
5041 RELOCATION to the change in the destination VMA, or
5042 new_dest_sec - old_dest_sec
5043 */
ae115e51
ILT		 5044 relocation = (r_section->output_section->vma
5045 + r_section->output_offset
5046 - r_section->vma);
e68de5d5
ILT		 5047 if (howto_table_ext[r_type].pc_relative)
5048 relocation += input_section->vma;
4c3721d5
ILT		 5049 }
5050
ae115e51
ILT		 5051 if (check_dynamic_reloc != NULL)
5052 {
5053 boolean skip;
5054
5055 if (! ((*check_dynamic_reloc)
5056 (finfo->info, input_bfd, input_section, h,
5057 (PTR) rel, contents, &skip, &relocation)))
5058 return false;
5059 if (skip)
5060 continue;
5061 }
5062
5063 /* Now warn if a global symbol is undefined. We could not
5064 do this earlier, because check_dynamic_reloc might want
5065 to skip this reloc. */
5066 if (hundef
5067 && ! finfo->info->shared
5068 && r_type != RELOC_BASE10
5069 && r_type != RELOC_BASE13
5070 && r_type != RELOC_BASE22)
5071 {
5072 const char *name;
5073
5074 name = strings + GET_WORD (input_bfd, syms[r_index].e_strx);
5075 if (! ((*finfo->info->callbacks->undefined_symbol)
5076 (finfo->info, name, input_bfd, input_section, r_addr)))
5077 return false;
5078 }
5079
34e9ffbc 5080 r = MY_final_link_relocate (howto_table_ext + r_type,
4c3721d5
ILT		 5081 input_bfd, input_section,
5082 contents, r_addr, relocation,
5083 r_addend);
5084 if (r != bfd_reloc_ok)
5085 {
5086 switch (r)
5087 {
5088 default:
5089 case bfd_reloc_outofrange:
5090 abort ();
5091 case bfd_reloc_overflow:
4991ebb9
ILT		 5092 {
5093 const char *name;
5094
ae115e51
ILT		 5095 if (r_extern
5096 || r_type == RELOC_BASE10
5097 || r_type == RELOC_BASE13
5098 || r_type == RELOC_BASE22)
4991ebb9
ILT		 5099 name = strings + GET_WORD (input_bfd,
5100 syms[r_index].e_strx);
5101 else
5102 {
5103 asection *s;
5104
5105 s = aout_reloc_index_to_section (input_bfd, r_index);
5106 name = bfd_section_name (input_bfd, s);
5107 }
5108 if (! ((*finfo->info->callbacks->reloc_overflow)
5109 (finfo->info, name, howto_table_ext[r_type].name,
5110 r_addend, input_bfd, input_section, r_addr)))
5111 return false;
5112 }
4c3721d5
ILT		 5113 break;
5114 }
5115 }
5116 }
5117 }
5118
5119 return true;
5120}
ec099b4b
ILT		 5121
5122/* Handle a link order which is supposed to generate a reloc. */
5123
5124static boolean
5125aout_link_reloc_link_order (finfo, o, p)
5126 struct aout_final_link_info *finfo;
5127 asection *o;
5128 struct bfd_link_order *p;
5129{
5130 struct bfd_link_order_reloc *pr;
5131 int r_index;
5132 int r_extern;
82b1edf7 5133 reloc_howto_type *howto;
ec099b4b
ILT		 5134 file_ptr *reloff_ptr;
5135 struct reloc_std_external srel;
5136 struct reloc_ext_external erel;
5137 PTR rel_ptr;
5138
5139 pr = p->u.reloc.p;
5140
5141 if (p->type == bfd_section_reloc_link_order)
5142 {
5143 r_extern = 0;
4587b578 5144 if (bfd_is_abs_section (pr->u.section))
ec099b4b
ILT		 5145 r_index = N_ABS | N_EXT;
5146 else
5147 {
5148 BFD_ASSERT (pr->u.section->owner == finfo->output_bfd);
5149 r_index = pr->u.section->target_index;
5150 }
5151 }
5152 else
5153 {
5154 struct aout_link_hash_entry *h;
5155
5156 BFD_ASSERT (p->type == bfd_symbol_reloc_link_order);
5157 r_extern = 1;
5158 h = aout_link_hash_lookup (aout_hash_table (finfo->info),
5159 pr->u.name, false, false, true);
5160 if (h != (struct aout_link_hash_entry *) NULL
74942465 5161 && h->indx >= 0)
ec099b4b 5162 r_index = h->indx;
74942465
ILT		 5163 else if (h != NULL)
5164 {
5165 /* We decided to strip this symbol, but it turns out that we
5166 can't. Note that we lose the other and desc information
5167 here. I don't think that will ever matter for a global
5168 symbol. */
5169 h->indx = -2;
5170 h->written = false;
5171 if (! aout_link_write_other_symbol (h, (PTR) finfo))
5172 return false;
5173 r_index = h->indx;
5174 }
ec099b4b
ILT		 5175 else
5176 {
5177 if (! ((*finfo->info->callbacks->unattached_reloc)
5178 (finfo->info, pr->u.name, (bfd *) NULL,
5179 (asection *) NULL, (bfd_vma) 0)))
5180 return false;
5181 r_index = 0;
5182 }
5183 }
5184
5185 howto = bfd_reloc_type_lookup (finfo->output_bfd, pr->reloc);
82b1edf7 5186 if (howto == 0)
ec099b4b
ILT		 5187 {
5188 bfd_set_error (bfd_error_bad_value);
5189 return false;
5190 }
5191
5192 if (o == obj_textsec (finfo->output_bfd))
5193 reloff_ptr = &finfo->treloff;
5194 else if (o == obj_datasec (finfo->output_bfd))
5195 reloff_ptr = &finfo->dreloff;
5196 else
5197 abort ();
5198
5199 if (obj_reloc_entry_size (finfo->output_bfd) == RELOC_STD_SIZE)
5200 {
f42fe159 5201#ifdef MY_put_reloc
ae115e51
ILT		 5202 MY_put_reloc(finfo->output_bfd, r_extern, r_index, p->offset, howto,
5203 &srel);
f42fe159 5204#else
ae115e51
ILT		 5205 {
5206 int r_pcrel;
5207 int r_baserel;
5208 int r_jmptable;
5209 int r_relative;
5210 int r_length;
5211
5212 r_pcrel = howto->pc_relative;
5213 r_baserel = (howto->type & 8) != 0;
5214 r_jmptable = (howto->type & 16) != 0;
5215 r_relative = (howto->type & 32) != 0;
5216 r_length = howto->size;
5217
5218 PUT_WORD (finfo->output_bfd, p->offset, srel.r_address);
5219 if (finfo->output_bfd->xvec->header_byteorder_big_p)
5220 {
5221 srel.r_index[0] = r_index >> 16;
5222 srel.r_index[1] = r_index >> 8;
5223 srel.r_index[2] = r_index;
5224 srel.r_type[0] =
5225 ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0)
5226 | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0)
5227 | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0)
5228 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0)
5229 | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0)
5230 | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG));
5231 }
5232 else
5233 {
5234 srel.r_index[2] = r_index >> 16;
5235 srel.r_index[1] = r_index >> 8;
5236 srel.r_index[0] = r_index;
5237 srel.r_type[0] =
5238 ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0)
5239 | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0)
5240 | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0)
5241 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0)
5242 | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0)
5243 | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE));
5244 }
5245 }
f42fe159 5246#endif
ec099b4b
ILT		 5247 rel_ptr = (PTR) &srel;
5248
5249 /* We have to write the addend into the object file, since
5250 standard a.out relocs are in place. It would be more
5251 reliable if we had the current contents of the file here,
5252 rather than assuming zeroes, but we can't read the file since
5253 it was opened using bfd_openw. */
5254 if (pr->addend != 0)
5255 {
5256 bfd_size_type size;
5257 bfd_reloc_status_type r;
5258 bfd_byte *buf;
5259 boolean ok;
5260
5261 size = bfd_get_reloc_size (howto);
e85e8bfe 5262 buf = (bfd_byte *) bfd_zmalloc (size);
ec099b4b
ILT		 5263 if (buf == (bfd_byte *) NULL)
5264 {
5265 bfd_set_error (bfd_error_no_memory);
5266 return false;
5267 }
34e9ffbc 5268 r = MY_relocate_contents (howto, finfo->output_bfd,
ec099b4b
ILT		 5269 pr->addend, buf);
5270 switch (r)
5271 {
5272 case bfd_reloc_ok:
5273 break;
5274 default:
5275 case bfd_reloc_outofrange:
5276 abort ();
5277 case bfd_reloc_overflow:
5278 if (! ((*finfo->info->callbacks->reloc_overflow)
5279 (finfo->info,
5280 (p->type == bfd_section_reloc_link_order
5281 ? bfd_section_name (finfo->output_bfd,
5282 pr->u.section)
5283 : pr->u.name),
5284 howto->name, pr->addend, (bfd *) NULL,
5285 (asection *) NULL, (bfd_vma) 0)))
5286 {
5287 free (buf);
5288 return false;
5289 }
5290 break;
5291 }
5292 ok = bfd_set_section_contents (finfo->output_bfd, o,
5293 (PTR) buf,
5294 (file_ptr) p->offset,
5295 size);
5296 free (buf);
5297 if (! ok)
5298 return false;
5299 }
5300 }
5301 else
5302 {
5303 PUT_WORD (finfo->output_bfd, p->offset, erel.r_address);
5304
5305 if (finfo->output_bfd->xvec->header_byteorder_big_p)
5306 {
5307 erel.r_index[0] = r_index >> 16;
5308 erel.r_index[1] = r_index >> 8;
5309 erel.r_index[2] = r_index;
5310 erel.r_type[0] =
5311 ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0)
5312 | (howto->type << RELOC_EXT_BITS_TYPE_SH_BIG));
5313 }
5314 else
5315 {
5316 erel.r_index[2] = r_index >> 16;
5317 erel.r_index[1] = r_index >> 8;
5318 erel.r_index[0] = r_index;
5319 erel.r_type[0] =
5320 (r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0)
5321 | (howto->type << RELOC_EXT_BITS_TYPE_SH_LITTLE);
5322 }
5323
5324 PUT_WORD (finfo->output_bfd, pr->addend, erel.r_addend);
5325
5326 rel_ptr = (PTR) &erel;
5327 }
5328
5329 if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0
5330 || (bfd_write (rel_ptr, (bfd_size_type) 1,
5331 obj_reloc_entry_size (finfo->output_bfd),
5332 finfo->output_bfd)
5333 != obj_reloc_entry_size (finfo->output_bfd)))
5334 return false;
5335
5336 *reloff_ptr += obj_reloc_entry_size (finfo->output_bfd);
5337
5338 /* Assert that the relocs have not run into the symbols, and that n
5339 the text relocs have not run into the data relocs. */
5340 BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd)
5341 && (reloff_ptr != &finfo->treloff
5342 || (*reloff_ptr
5343 <= obj_datasec (finfo->output_bfd)->rel_filepos)));
5344
5345 return true;
5346}
GDB Binutils - Deliverables
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