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* mpw-config.in: Match on mips-*-* instead of mips-idt-ecoff.
[thirdparty/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 ));
a9713b91 433 if (rawptr == NULL)
7ed4093a 434 return 0;
7ed4093a 435
214f8f23 436 oldrawptr = abfd->tdata.aout_data;
6db82ea7 437 abfd->tdata.aout_data = rawptr;
ebd24135
ILT		 438
439 /* Copy the contents of the old tdata struct.
440 In particular, we want the subformat, since for hpux it was set in
441 hp300hpux.c:swap_exec_header_in and will be used in
442 hp300hpux.c:callback. */
443 if (oldrawptr != NULL)
444 *abfd->tdata.aout_data = *oldrawptr;
445
6db82ea7
SC		 446 abfd->tdata.aout_data->a.hdr = &rawptr->e;
447 *(abfd->tdata.aout_data->a.hdr) = *execp; /* Copy in the internal_exec struct */
448 execp = abfd->tdata.aout_data->a.hdr;
7ed4093a
SC		 449
450 /* Set the file flags */
451 abfd->flags = NO_FLAGS;
452 if (execp->a_drsize || execp->a_trsize)
453 abfd->flags |= HAS_RELOC;
e6e265ce 454 /* Setting of EXEC_P has been deferred to the bottom of this function */
c188b0be 455 if (execp->a_syms)
7ed4093a 456 abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS;
e68de5d5
ILT		 457 if (N_DYNAMIC(*execp))
458 abfd->flags |= DYNAMIC;
7ed4093a 459
ce07dd7c
KR		 460 if (N_MAGIC (*execp) == ZMAGIC)
461 {
f5419a59
ILT		 462 abfd->flags |= D_PAGED | WP_TEXT;
463 adata (abfd).magic = z_magic;
464 }
465 else if (N_MAGIC (*execp) == QMAGIC)
466 {
467 abfd->flags |= D_PAGED | WP_TEXT;
468 adata (abfd).magic = z_magic;
469 adata (abfd).subformat = q_magic_format;
ce07dd7c
KR		 470 }
471 else if (N_MAGIC (*execp) == NMAGIC)
472 {
473 abfd->flags |= WP_TEXT;
f5419a59 474 adata (abfd).magic = n_magic;
ce07dd7c 475 }
7b024321
ILT		 476 else if (N_MAGIC (*execp) == OMAGIC
477 || N_MAGIC (*execp) == BMAGIC)
f5419a59 478 adata (abfd).magic = o_magic;
ce07dd7c 479 else
f5419a59
ILT		 480 {
481 /* Should have been checked with N_BADMAG before this routine
482 was called. */
483 abort ();
484 }
7ed4093a
SC		 485
486 bfd_get_start_address (abfd) = execp->a_entry;
487
488 obj_aout_symbols (abfd) = (aout_symbol_type *)NULL;
489 bfd_get_symcount (abfd) = execp->a_syms / sizeof (struct external_nlist);
490
7ed4093a
SC		 491 /* The default relocation entry size is that of traditional V7 Unix. */
492 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
493
7b02b4ed
JG		 494 /* The default symbol entry size is that of traditional Unix. */
495 obj_symbol_entry_size (abfd) = EXTERNAL_NLIST_SIZE;
496
7ac84736 497#ifdef USE_MMAP
4fe6d901 498 bfd_init_window (&obj_aout_sym_window (abfd));
4fe6d901 499 bfd_init_window (&obj_aout_string_window (abfd));
7ac84736
KR		 500#endif
501 obj_aout_external_syms (abfd) = NULL;
502 obj_aout_external_strings (abfd) = NULL;
728472f1
ILT		 503 obj_aout_sym_hashes (abfd) = NULL;
504
ec6b18c4
ILT		 505 if (! NAME(aout,make_sections) (abfd))
506 return NULL;
7ed4093a 507
6db82ea7
SC		 508 obj_datasec (abfd)->_raw_size = execp->a_data;
509 obj_bsssec (abfd)->_raw_size = execp->a_bss;
7ed4093a 510
0ee75d02 511 obj_textsec (abfd)->flags =
11676adc 512 (execp->a_trsize != 0
0ee75d02
ILT		 513 ? (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_RELOC)
514 : (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS));
515 obj_datasec (abfd)->flags =
11676adc 516 (execp->a_drsize != 0
0ee75d02
ILT		 517 ? (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS | SEC_RELOC)
518 : (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS));
7ed4093a
SC		 519 obj_bsssec (abfd)->flags = SEC_ALLOC;
520
521#ifdef THIS_IS_ONLY_DOCUMENTATION
98d43107
JG		 522 /* The common code can't fill in these things because they depend
523 on either the start address of the text segment, the rounding
9783e04a 524 up of virtual addresses between segments, or the starting file
98d43107
JG		 525 position of the text segment -- all of which varies among different
526 versions of a.out. */
527
c188b0be 528 /* Call back to the format-dependent code to fill in the rest of the
7ed4093a
SC		 529 fields and do any further cleanup. Things that should be filled
530 in by the callback: */
531
532 struct exec *execp = exec_hdr (abfd);
533
98d43107 534 obj_textsec (abfd)->size = N_TXTSIZE(*execp);
6db82ea7 535 obj_textsec (abfd)->raw_size = N_TXTSIZE(*execp);
98d43107
JG		 536 /* data and bss are already filled in since they're so standard */
537
7ed4093a 538 /* The virtual memory addresses of the sections */
7ed4093a 539 obj_textsec (abfd)->vma = N_TXTADDR(*execp);
98d43107
JG		 540 obj_datasec (abfd)->vma = N_DATADDR(*execp);
541 obj_bsssec (abfd)->vma = N_BSSADDR(*execp);
7ed4093a
SC		 542
543 /* The file offsets of the sections */
544 obj_textsec (abfd)->filepos = N_TXTOFF(*execp);
545 obj_datasec (abfd)->filepos = N_DATOFF(*execp);
546
547 /* The file offsets of the relocation info */
548 obj_textsec (abfd)->rel_filepos = N_TRELOFF(*execp);
549 obj_datasec (abfd)->rel_filepos = N_DRELOFF(*execp);
550
551 /* The file offsets of the string table and symbol table. */
552 obj_str_filepos (abfd) = N_STROFF (*execp);
553 obj_sym_filepos (abfd) = N_SYMOFF (*execp);
554
7ed4093a
SC		 555 /* Determine the architecture and machine type of the object file. */
556 switch (N_MACHTYPE (*exec_hdr (abfd))) {
557 default:
558 abfd->obj_arch = bfd_arch_obscure;
559 break;
560 }
561
34e9ffbc 562 adata(abfd)->page_size = TARGET_PAGE_SIZE;
7b02b4ed
JG		 563 adata(abfd)->segment_size = SEGMENT_SIZE;
564 adata(abfd)->exec_bytes_size = EXEC_BYTES_SIZE;
565
7ed4093a
SC		 566 return abfd->xvec;
567
568 /* The architecture is encoded in various ways in various a.out variants,
569 or is not encoded at all in some of them. The relocation size depends
570 on the architecture and the a.out variant. Finally, the return value
571 is the bfd_target vector in use. If an error occurs, return zero and
572 set bfd_error to the appropriate error code.
c188b0be 573
7ed4093a
SC		 574 Formats such as b.out, which have additional fields in the a.out
575 header, should cope with them in this callback as well. */
576#endif /* DOCUMENTATION */
577
e6e265ce
JG		 578 result = (*callback_to_real_object_p)(abfd);
579
580 /* Now that the segment addresses have been worked out, take a better
581 guess at whether the file is executable. If the entry point
582 is within the text segment, assume it is. (This makes files
583 executable even if their entry point address is 0, as long as
6c97aedf 584 their text starts at zero.). */
e6e265ce 585 if ((execp->a_entry >= obj_textsec(abfd)->vma) &&
6db82ea7 586 (execp->a_entry < obj_textsec(abfd)->vma + obj_textsec(abfd)->_raw_size))
e6e265ce 587 abfd->flags |= EXEC_P;
6c97aedf
ILT		 588#ifdef STAT_FOR_EXEC
589 else
590 {
591 struct stat stat_buf;
592
593 /* The original heuristic doesn't work in some important cases.
594 The a.out file has no information about the text start
595 address. For files (like kernels) linked to non-standard
596 addresses (ld -Ttext nnn) the entry point may not be between
597 the default text start (obj_textsec(abfd)->vma) and
598 (obj_textsec(abfd)->vma) + text size. This is not just a mach
599 issue. Many kernels are loaded at non standard addresses. */
600 if (abfd->iostream
601 && (fstat(fileno((FILE *) (abfd->iostream)), &stat_buf) == 0)
602 && ((stat_buf.st_mode & 0111) != 0))
603 abfd->flags |= EXEC_P;
604 }
605#endif /* STAT_FOR_EXEC */
606
214f8f23
KR		 607 if (result)
608 {
1f29e30b 609#if 0 /* These should be set correctly anyways. */
214f8f23
KR		 610 abfd->sections = obj_textsec (abfd);
611 obj_textsec (abfd)->next = obj_datasec (abfd);
612 obj_datasec (abfd)->next = obj_bsssec (abfd);
1f29e30b 613#endif
214f8f23
KR		 614 }
615 else
616 {
617 free (rawptr);
618 abfd->tdata.aout_data = oldrawptr;
619 }
e6e265ce 620 return result;
7ed4093a
SC		 621}
622
4e41b5aa
SC		 623/*
624FUNCTION
c188b0be 625 aout_@var{size}_mkobject
6f715d66 626
fa2b89f1 627SYNOPSIS
c188b0be
DM		 628 boolean aout_@var{size}_mkobject, (bfd *abfd);
629
630DESCRIPTION
631 Initialize BFD @var{abfd} for use with a.out files.
6f715d66 632*/
7ed4093a
SC		 633
634boolean
8eb5d4be
JK		 635NAME(aout,mkobject) (abfd)
636 bfd *abfd;
7ed4093a 637{
6db82ea7 638 struct aout_data_struct *rawptr;
7ed4093a 639
68241b2b 640 bfd_set_error (bfd_error_system_call);
7ed4093a
SC		 641
642 /* Use an intermediate variable for clarity */
2e235c93 643 rawptr = (struct aout_data_struct *)bfd_zalloc (abfd, sizeof (struct aout_data_struct ));
c188b0be 644
a9713b91 645 if (rawptr == NULL)
7ed4093a 646 return false;
c188b0be 647
6db82ea7 648 abfd->tdata.aout_data = rawptr;
7ed4093a 649 exec_hdr (abfd) = &(rawptr->e);
c188b0be 650
7ed4093a
SC		 651 obj_textsec (abfd) = (asection *)NULL;
652 obj_datasec (abfd) = (asection *)NULL;
653 obj_bsssec (abfd) = (asection *)NULL;
c188b0be 654
7ed4093a
SC		 655 return true;
656}
657
6f715d66 658
4e41b5aa
SC		 659/*
660FUNCTION
c188b0be
DM		 661 aout_@var{size}_machine_type
662
663SYNOPSIS
664 enum machine_type aout_@var{size}_machine_type
665 (enum bfd_architecture arch,
666 unsigned long machine));
6f715d66 667
4e41b5aa
SC		 668DESCRIPTION
669 Keep track of machine architecture and machine type for
c188b0be
DM		 670 a.out's. Return the <<machine_type>> for a particular
671 architecture and machine, or <<M_UNKNOWN>> if that exact architecture
672 and machine can't be represented in a.out format.
7ed4093a 673
4e41b5aa 674 If the architecture is understood, machine type 0 (default)
c188b0be 675 is always understood.
6f715d66 676*/
7ed4093a
SC		 677
678enum machine_type
9ae74960 679NAME(aout,machine_type) (arch, machine, unknown)
8eb5d4be
JK		 680 enum bfd_architecture arch;
681 unsigned long machine;
9ae74960 682 boolean *unknown;
7ed4093a
SC		 683{
684 enum machine_type arch_flags;
c188b0be 685
7ed4093a 686 arch_flags = M_UNKNOWN;
9ae74960 687 *unknown = true;
c188b0be 688
7ed4093a
SC		 689 switch (arch) {
690 case bfd_arch_sparc:
ae115e51
ILT		 691 if (machine == 0
692 || machine == bfd_mach_sparc
693 || machine == bfd_mach_sparc64)
694 arch_flags = M_SPARC;
7ed4093a 695 break;
c188b0be 696
7ed4093a
SC		 697 case bfd_arch_m68k:
698 switch (machine) {
699 case 0: arch_flags = M_68010; break;
9ae74960 700 case 68000: arch_flags = M_UNKNOWN; *unknown = false; break;
7ed4093a
SC		 701 case 68010: arch_flags = M_68010; break;
702 case 68020: arch_flags = M_68020; break;
703 default: arch_flags = M_UNKNOWN; break;
704 }
705 break;
c188b0be 706
7ed4093a
SC		 707 case bfd_arch_i386:
708 if (machine == 0) arch_flags = M_386;
709 break;
c188b0be 710
7ed4093a
SC		 711 case bfd_arch_a29k:
712 if (machine == 0) arch_flags = M_29K;
713 break;
c188b0be 714
204ba9e3
ILT		 715 case bfd_arch_arm:
716 if (machine == 0) arch_flags = M_ARM;
717 break;
718
5cd3dcff
KR		 719 case bfd_arch_mips:
720 switch (machine) {
721 case 0:
722 case 2000:
723 case 3000: arch_flags = M_MIPS1; break;
943fbd5b 724 case 4000: /* mips3 */
5cd3dcff 725 case 4400:
943fbd5b
KR		 726 case 8000: /* mips4 */
727 /* real mips2: */
5cd3dcff
KR		 728 case 6000: arch_flags = M_MIPS2; break;
729 default: arch_flags = M_UNKNOWN; break;
730 }
731 break;
732
f42fe159
ILT		 733 case bfd_arch_ns32k:
734 switch (machine) {
735 case 0: arch_flags = M_NS32532; break;
736 case 32032: arch_flags = M_NS32032; break;
737 case 32532: arch_flags = M_NS32532; break;
738 default: arch_flags = M_UNKNOWN; break;
739 }
740 break;
741
82b1edf7
KR		 742 case bfd_arch_vax:
743 *unknown = false;
744 break;
745
746 /* start-sanitize-rce */
747 case bfd_arch_rce:
748 arch_flags = M_RCE;
749 break;
750 /* end-sanitize-rce */
751
7ed4093a
SC		 752 default:
753 arch_flags = M_UNKNOWN;
7ed4093a 754 }
9ae74960
ILT		 755
756 if (arch_flags != M_UNKNOWN)
757 *unknown = false;
758
7ed4093a
SC		 759 return arch_flags;
760}
761
9e2dad8e 762
4e41b5aa
SC		 763/*
764FUNCTION
c188b0be 765 aout_@var{size}_set_arch_mach
6f715d66 766
fa2b89f1 767SYNOPSIS
c188b0be 768 boolean aout_@var{size}_set_arch_mach,
6f715d66 769 (bfd *,
c188b0be 770 enum bfd_architecture arch,
6f715d66 771 unsigned long machine));
c188b0be
DM		 772
773DESCRIPTION
774 Set the architecture and the machine of the BFD @var{abfd} to the
775 values @var{arch} and @var{machine}. Verify that @var{abfd}'s format
776 can support the architecture required.
6f715d66
SC		 777*/
778
7ed4093a 779boolean
8eb5d4be
JK		 780NAME(aout,set_arch_mach) (abfd, arch, machine)
781 bfd *abfd;
782 enum bfd_architecture arch;
783 unsigned long machine;
7ed4093a 784{
2e235c93
ILT		 785 if (! bfd_default_set_arch_mach (abfd, arch, machine))
786 return false;
787
9ae74960
ILT		 788 if (arch != bfd_arch_unknown)
789 {
790 boolean unknown;
791
792 NAME(aout,machine_type) (arch, machine, &unknown);
793 if (unknown)
794 return false;
795 }
ce07dd7c 796
214f8f23
KR		 797 /* Determine the size of a relocation entry */
798 switch (arch) {
799 case bfd_arch_sparc:
800 case bfd_arch_a29k:
5cd3dcff 801 case bfd_arch_mips:
214f8f23
KR		 802 obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE;
803 break;
804 default:
805 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
806 break;
807 }
808
2768b3f7 809 return (*aout_backend_info(abfd)->set_sizes) (abfd);
7ed4093a 810}
7ed4093a 811
4c3721d5
ILT		 812static void
813adjust_o_magic (abfd, execp)
814 bfd *abfd;
815 struct internal_exec *execp;
816{
817 file_ptr pos = adata (abfd).exec_bytes_size;
818 bfd_vma vma = 0;
819 int pad = 0;
820
821 /* Text. */
822 obj_textsec(abfd)->filepos = pos;
74942465
ILT		 823 if (!obj_textsec(abfd)->user_set_vma)
824 obj_textsec(abfd)->vma = vma;
825 else
826 vma = obj_textsec(abfd)->vma;
827
4c3721d5
ILT		 828 pos += obj_textsec(abfd)->_raw_size;
829 vma += obj_textsec(abfd)->_raw_size;
830
831 /* Data. */
832 if (!obj_datasec(abfd)->user_set_vma)
833 {
834#if 0 /* ?? Does alignment in the file image really matter? */
835 pad = align_power (vma, obj_datasec(abfd)->alignment_power) - vma;
836#endif
837 obj_textsec(abfd)->_raw_size += pad;
838 pos += pad;
839 vma += pad;
840 obj_datasec(abfd)->vma = vma;
841 }
82b1edf7
KR		 842 else
843 vma = obj_datasec(abfd)->vma;
4c3721d5
ILT		 844 obj_datasec(abfd)->filepos = pos;
845 pos += obj_datasec(abfd)->_raw_size;
846 vma += obj_datasec(abfd)->_raw_size;
847
848 /* BSS. */
849 if (!obj_bsssec(abfd)->user_set_vma)
850 {
851#if 0
852 pad = align_power (vma, obj_bsssec(abfd)->alignment_power) - vma;
853#endif
854 obj_datasec(abfd)->_raw_size += pad;
855 pos += pad;
856 vma += pad;
857 obj_bsssec(abfd)->vma = vma;
858 }
f4945271
ILT		 859 else
860 {
861 /* The VMA of the .bss section is set by the the VMA of the
862 .data section plus the size of the .data section. We may
863 need to add padding bytes to make this true. */
864 pad = obj_bsssec (abfd)->vma - vma;
865 if (pad > 0)
866 {
867 obj_datasec (abfd)->_raw_size += pad;
868 pos += pad;
869 }
870 }
4c3721d5
ILT		 871 obj_bsssec(abfd)->filepos = pos;
872
873 /* Fix up the exec header. */
874 execp->a_text = obj_textsec(abfd)->_raw_size;
875 execp->a_data = obj_datasec(abfd)->_raw_size;
876 execp->a_bss = obj_bsssec(abfd)->_raw_size;
877 N_SET_MAGIC (*execp, OMAGIC);
878}
879
880static void
881adjust_z_magic (abfd, execp)
882 bfd *abfd;
883 struct internal_exec *execp;
884{
885 bfd_size_type data_pad, text_pad;
886 file_ptr text_end;
887 CONST struct aout_backend_data *abdp;
888 int ztih; /* Nonzero if text includes exec header. */
4c3721d5
ILT		 889
890 abdp = aout_backend_info (abfd);
891
892 /* Text. */
0630aba5
ILT		 893 ztih = (abdp != NULL
894 && (abdp->text_includes_header
895 || obj_aout_subformat (abfd) == q_magic_format));
4c3721d5
ILT		 896 obj_textsec(abfd)->filepos = (ztih
897 ? adata(abfd).exec_bytes_size
0630aba5 898 : adata(abfd).zmagic_disk_block_size);
4c3721d5 899 if (! obj_textsec(abfd)->user_set_vma)
e1f99f60
ILT		 900 {
901 /* ?? Do we really need to check for relocs here? */
902 obj_textsec(abfd)->vma = ((abfd->flags & HAS_RELOC)
903 ? 0
904 : (ztih
905 ? (abdp->default_text_vma
906 + adata(abfd).exec_bytes_size)
907 : abdp->default_text_vma));
908 text_pad = 0;
909 }
910 else
911 {
912 /* The .text section is being loaded at an unusual address. We
913 may need to pad it such that the .data section starts at a page
914 boundary. */
915 if (ztih)
916 text_pad = ((obj_textsec (abfd)->filepos - obj_textsec (abfd)->vma)
917 & (adata (abfd).page_size - 1));
918 else
919 text_pad = ((- obj_textsec (abfd)->vma)
920 & (adata (abfd).page_size - 1));
921 }
922
4c3721d5 923 /* Find start of data. */
0630aba5
ILT		 924 if (ztih)
925 {
926 text_end = obj_textsec (abfd)->filepos + obj_textsec (abfd)->_raw_size;
e1f99f60 927 text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end;
0630aba5
ILT		 928 }
929 else
930 {
931 /* Note that if page_size == zmagic_disk_block_size, then
932 filepos == page_size, and this case is the same as the ztih
933 case. */
934 text_end = obj_textsec (abfd)->_raw_size;
e1f99f60 935 text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end;
0630aba5
ILT		 936 text_end += obj_textsec (abfd)->filepos;
937 }
4c3721d5
ILT		 938 obj_textsec(abfd)->_raw_size += text_pad;
939 text_end += text_pad;
940
941 /* Data. */
942 if (!obj_datasec(abfd)->user_set_vma)
943 {
944 bfd_vma vma;
945 vma = obj_textsec(abfd)->vma + obj_textsec(abfd)->_raw_size;
946 obj_datasec(abfd)->vma = BFD_ALIGN (vma, adata(abfd).segment_size);
947 }
4c3721d5
ILT		 948 if (abdp && abdp->zmagic_mapped_contiguous)
949 {
950 text_pad = (obj_datasec(abfd)->vma
951 - obj_textsec(abfd)->vma
952 - obj_textsec(abfd)->_raw_size);
953 obj_textsec(abfd)->_raw_size += text_pad;
954 }
955 obj_datasec(abfd)->filepos = (obj_textsec(abfd)->filepos
956 + obj_textsec(abfd)->_raw_size);
957
958 /* Fix up exec header while we're at it. */
959 execp->a_text = obj_textsec(abfd)->_raw_size;
960 if (ztih && (!abdp || (abdp && !abdp->exec_header_not_counted)))
961 execp->a_text += adata(abfd).exec_bytes_size;
f5419a59
ILT		 962 if (obj_aout_subformat (abfd) == q_magic_format)
963 N_SET_MAGIC (*execp, QMAGIC);
964 else
965 N_SET_MAGIC (*execp, ZMAGIC);
5330499f 966
4c3721d5 967 /* Spec says data section should be rounded up to page boundary. */
4c3721d5
ILT		 968 obj_datasec(abfd)->_raw_size
969 = align_power (obj_datasec(abfd)->_raw_size,
970 obj_bsssec(abfd)->alignment_power);
971 execp->a_data = BFD_ALIGN (obj_datasec(abfd)->_raw_size,
972 adata(abfd).page_size);
973 data_pad = execp->a_data - obj_datasec(abfd)->_raw_size;
974
975 /* BSS. */
976 if (!obj_bsssec(abfd)->user_set_vma)
977 obj_bsssec(abfd)->vma = (obj_datasec(abfd)->vma
978 + obj_datasec(abfd)->_raw_size);
5330499f
DM		 979 /* If the BSS immediately follows the data section and extra space
980 in the page is left after the data section, fudge data
981 in the header so that the bss section looks smaller by that
982 amount. We'll start the bss section there, and lie to the OS.
983 (Note that a linker script, as well as the above assignment,
984 could have explicitly set the BSS vma to immediately follow
985 the data section.) */
986 if (align_power (obj_bsssec(abfd)->vma, obj_bsssec(abfd)->alignment_power)
987 == obj_datasec(abfd)->vma + obj_datasec(abfd)->_raw_size)
988 execp->a_bss = (data_pad > obj_bsssec(abfd)->_raw_size) ? 0 :
989 obj_bsssec(abfd)->_raw_size - data_pad;
990 else
991 execp->a_bss = obj_bsssec(abfd)->_raw_size;
4c3721d5
ILT		 992}
993
994static void
995adjust_n_magic (abfd, execp)
996 bfd *abfd;
997 struct internal_exec *execp;
998{
999 file_ptr pos = adata(abfd).exec_bytes_size;
1000 bfd_vma vma = 0;
1001 int pad;
1002
1003 /* Text. */
1004 obj_textsec(abfd)->filepos = pos;
1005 if (!obj_textsec(abfd)->user_set_vma)
1006 obj_textsec(abfd)->vma = vma;
1007 else
1008 vma = obj_textsec(abfd)->vma;
1009 pos += obj_textsec(abfd)->_raw_size;
1010 vma += obj_textsec(abfd)->_raw_size;
1011
1012 /* Data. */
1013 obj_datasec(abfd)->filepos = pos;
1014 if (!obj_datasec(abfd)->user_set_vma)
1015 obj_datasec(abfd)->vma = BFD_ALIGN (vma, adata(abfd).segment_size);
1016 vma = obj_datasec(abfd)->vma;
1017
1018 /* Since BSS follows data immediately, see if it needs alignment. */
1019 vma += obj_datasec(abfd)->_raw_size;
1020 pad = align_power (vma, obj_bsssec(abfd)->alignment_power) - vma;
1021 obj_datasec(abfd)->_raw_size += pad;
1022 pos += obj_datasec(abfd)->_raw_size;
1023
1024 /* BSS. */
1025 if (!obj_bsssec(abfd)->user_set_vma)
1026 obj_bsssec(abfd)->vma = vma;
1027 else
1028 vma = obj_bsssec(abfd)->vma;
1029
1030 /* Fix up exec header. */
1031 execp->a_text = obj_textsec(abfd)->_raw_size;
1032 execp->a_data = obj_datasec(abfd)->_raw_size;
1033 execp->a_bss = obj_bsssec(abfd)->_raw_size;
1034 N_SET_MAGIC (*execp, NMAGIC);
1035}
1036
ce07dd7c 1037boolean
8eb5d4be
JK		 1038NAME(aout,adjust_sizes_and_vmas) (abfd, text_size, text_end)
1039 bfd *abfd;
1040 bfd_size_type *text_size;
1041 file_ptr *text_end;
ce07dd7c
KR		 1042{
1043 struct internal_exec *execp = exec_hdr (abfd);
4c3721d5 1044
ec6b18c4
ILT		 1045 if (! NAME(aout,make_sections) (abfd))
1046 return false;
1047
f5419a59
ILT		 1048 if (adata(abfd).magic != undecided_magic)
1049 return true;
4c3721d5 1050
c188b0be 1051 obj_textsec(abfd)->_raw_size =
ce07dd7c
KR		 1052 align_power(obj_textsec(abfd)->_raw_size,
1053 obj_textsec(abfd)->alignment_power);
1054
1055 *text_size = obj_textsec (abfd)->_raw_size;
1056 /* Rule (heuristic) for when to pad to a new page. Note that there
4c3721d5
ILT		 1057 are (at least) two ways demand-paged (ZMAGIC) files have been
1058 handled. Most Berkeley-based systems start the text segment at
34e9ffbc 1059 (TARGET_PAGE_SIZE). However, newer versions of SUNOS start the text
4c3721d5
ILT		 1060 segment right after the exec header; the latter is counted in the
1061 text segment size, and is paged in by the kernel with the rest of
1062 the text. */
ce07dd7c
KR		 1063
1064 /* This perhaps isn't the right way to do this, but made it simpler for me
1065 to understand enough to implement it. Better would probably be to go
1066 right from BFD flags to alignment/positioning characteristics. But the
1067 old code was sloppy enough about handling the flags, and had enough
1068 other magic, that it was a little hard for me to understand. I think
1069 I understand it better now, but I haven't time to do the cleanup this
1070 minute. */
4c3721d5
ILT		 1071
1072 if (abfd->flags & D_PAGED)
1073 /* Whether or not WP_TEXT is set -- let D_PAGED override. */
4c3721d5
ILT		 1074 adata(abfd).magic = z_magic;
1075 else if (abfd->flags & WP_TEXT)
1076 adata(abfd).magic = n_magic;
1077 else
1078 adata(abfd).magic = o_magic;
ce07dd7c
KR		 1079
1080#ifdef BFD_AOUT_DEBUG /* requires gcc2 */
1081#if __GNUC__ >= 2
1082 fprintf (stderr, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n",
1083 ({ char *str;
1084 switch (adata(abfd).magic) {
1085 case n_magic: str = "NMAGIC"; break;
1086 case o_magic: str = "OMAGIC"; break;
1087 case z_magic: str = "ZMAGIC"; break;
1088 default: abort ();
1089 }
1090 str;
1091 }),
4c3721d5
ILT		 1092 obj_textsec(abfd)->vma, obj_textsec(abfd)->_raw_size,
1093 obj_textsec(abfd)->alignment_power,
1094 obj_datasec(abfd)->vma, obj_datasec(abfd)->_raw_size,
1095 obj_datasec(abfd)->alignment_power,
1096 obj_bsssec(abfd)->vma, obj_bsssec(abfd)->_raw_size,
1097 obj_bsssec(abfd)->alignment_power);
ce07dd7c
KR		 1098#endif
1099#endif
1100
1101 switch (adata(abfd).magic)
1102 {
1103 case o_magic:
4c3721d5 1104 adjust_o_magic (abfd, execp);
ce07dd7c
KR		 1105 break;
1106 case z_magic:
4c3721d5 1107 adjust_z_magic (abfd, execp);
ce07dd7c
KR		 1108 break;
1109 case n_magic:
4c3721d5 1110 adjust_n_magic (abfd, execp);
ce07dd7c
KR		 1111 break;
1112 default:
1113 abort ();
1114 }
4c3721d5 1115
ce07dd7c
KR		 1116#ifdef BFD_AOUT_DEBUG
1117 fprintf (stderr, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n",
4c3721d5
ILT		 1118 obj_textsec(abfd)->vma, obj_textsec(abfd)->_raw_size,
1119 obj_textsec(abfd)->filepos,
1120 obj_datasec(abfd)->vma, obj_datasec(abfd)->_raw_size,
1121 obj_datasec(abfd)->filepos,
ce07dd7c
KR		 1122 obj_bsssec(abfd)->vma, obj_bsssec(abfd)->_raw_size);
1123#endif
4c3721d5 1124
d047d16a 1125 return true;
ce07dd7c
KR		 1126}
1127
4e41b5aa
SC		 1128/*
1129FUNCTION
c188b0be 1130 aout_@var{size}_new_section_hook
4e41b5aa 1131
fa2b89f1 1132SYNOPSIS
c188b0be 1133 boolean aout_@var{size}_new_section_hook,
9e2dad8e
JG		 1134 (bfd *abfd,
1135 asection *newsect));
c188b0be
DM		 1136
1137DESCRIPTION
1138 Called by the BFD in response to a @code{bfd_make_section}
1139 request.
6f715d66 1140*/
7ed4093a 1141boolean
8eb5d4be
JK		 1142NAME(aout,new_section_hook) (abfd, newsect)
1143 bfd *abfd;
1144 asection *newsect;
7ed4093a 1145{
6db82ea7
SC		 1146 /* align to double at least */
1147 newsect->alignment_power = bfd_get_arch_info(abfd)->section_align_power;
3f7607af 1148
c188b0be
DM		 1149
1150 if (bfd_get_format (abfd) == bfd_object)
6db82ea7
SC		 1151 {
1152 if (obj_textsec(abfd) == NULL && !strcmp(newsect->name, ".text")) {
1153 obj_textsec(abfd)= newsect;
e48f985c 1154 newsect->target_index = N_TEXT;
6db82ea7
SC		 1155 return true;
1156 }
c188b0be 1157
6db82ea7
SC		 1158 if (obj_datasec(abfd) == NULL && !strcmp(newsect->name, ".data")) {
1159 obj_datasec(abfd) = newsect;
e48f985c 1160 newsect->target_index = N_DATA;
6db82ea7
SC		 1161 return true;
1162 }
c188b0be 1163
6db82ea7
SC		 1164 if (obj_bsssec(abfd) == NULL && !strcmp(newsect->name, ".bss")) {
1165 obj_bsssec(abfd) = newsect;
e48f985c 1166 newsect->target_index = N_BSS;
6db82ea7
SC		 1167 return true;
1168 }
1169
1170 }
c188b0be 1171
6db82ea7
SC		 1172 /* We allow more than three sections internally */
1173 return true;
7ed4093a
SC		 1174}
1175
1176boolean
8eb5d4be
JK		 1177NAME(aout,set_section_contents) (abfd, section, location, offset, count)
1178 bfd *abfd;
1179 sec_ptr section;
1180 PTR location;
1181 file_ptr offset;
1182 bfd_size_type count;
7ed4093a 1183{
7b02b4ed 1184 file_ptr text_end;
7b02b4ed 1185 bfd_size_type text_size;
ce07dd7c 1186
773033d2
ILT		 1187 if (! abfd->output_has_begun)
1188 {
1189 if (! NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end))
1190 return false;
1191 }
12e7087f 1192
773033d2
ILT		 1193 if (section == obj_bsssec (abfd))
1194 {
1195 bfd_set_error (bfd_error_no_contents);
1196 return false;
1197 }
1198
1199 if (section != obj_textsec (abfd)
1200 && section != obj_datasec (abfd))
1201 {
a1774c51
ILT		 1202 (*_bfd_error_handler)
1203 ("%s: can not represent section `%s' in a.out object file format",
1204 bfd_get_filename (abfd), bfd_get_section_name (abfd, section));
773033d2
ILT		 1205 bfd_set_error (bfd_error_nonrepresentable_section);
1206 return false;
1207 }
1208
1209 if (count != 0)
1210 {
1211 if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0
1212 || bfd_write (location, 1, count, abfd) != count)
1213 return false;
1214 }
c188b0be 1215
7ed4093a
SC		 1216 return true;
1217}
1218\f
5c8444f8
ILT		 1219/* Read the external symbols from an a.out file. */
1220
1221static boolean
1222aout_get_external_symbols (abfd)
1223 bfd *abfd;
1224{
1225 if (obj_aout_external_syms (abfd) == (struct external_nlist *) NULL)
1226 {
1227 bfd_size_type count;
1228 struct external_nlist *syms;
1229
1230 count = exec_hdr (abfd)->a_syms / EXTERNAL_NLIST_SIZE;
1231
7ac84736 1232#ifdef USE_MMAP
4fe6d901
KR		 1233 if (bfd_get_file_window (abfd,
1234 obj_sym_filepos (abfd), exec_hdr (abfd)->a_syms,
0bb8ff19 1235 &obj_aout_sym_window (abfd), true) == false)
4fe6d901
KR		 1236 return false;
1237 syms = (struct external_nlist *) obj_aout_sym_window (abfd).data;
7ac84736
KR		 1238#else
1239 /* We allocate using malloc to make the values easy to free
1240 later on. If we put them on the obstack it might not be
1241 possible to free them. */
1242 syms = ((struct external_nlist *)
58142f10 1243 bfd_malloc ((size_t) count * EXTERNAL_NLIST_SIZE));
7ac84736 1244 if (syms == (struct external_nlist *) NULL && count != 0)
58142f10 1245 return false;
7ac84736
KR		 1246
1247 if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
1248 || (bfd_read (syms, 1, exec_hdr (abfd)->a_syms, abfd)
1249 != exec_hdr (abfd)->a_syms))
1250 {
1251 free (syms);
1252 return false;
1253 }
1254#endif
5c8444f8
ILT		 1255
1256 obj_aout_external_syms (abfd) = syms;
1257 obj_aout_external_sym_count (abfd) = count;
1258 }
1259
4f019d04
ILT		 1260 if (obj_aout_external_strings (abfd) == NULL
1261 && exec_hdr (abfd)->a_syms != 0)
5c8444f8
ILT		 1262 {
1263 unsigned char string_chars[BYTES_IN_WORD];
1264 bfd_size_type stringsize;
1265 char *strings;
1266
1267 /* Get the size of the strings. */
1268 if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0
1269 || (bfd_read ((PTR) string_chars, BYTES_IN_WORD, 1, abfd)
1270 != BYTES_IN_WORD))
1271 return false;
1272 stringsize = GET_WORD (abfd, string_chars);
1273
7ac84736 1274#ifdef USE_MMAP
4fe6d901 1275 if (bfd_get_file_window (abfd, obj_str_filepos (abfd), stringsize,
0bb8ff19 1276 &obj_aout_string_window (abfd), true) == false)
4fe6d901
KR		 1277 return false;
1278 strings = (char *) obj_aout_string_window (abfd).data;
7ac84736 1279#else
58142f10 1280 strings = (char *) bfd_malloc ((size_t) stringsize + 1);
7ac84736 1281 if (strings == NULL)
58142f10 1282 return false;
7ac84736
KR		 1283
1284 /* Skip space for the string count in the buffer for convenience
1285 when using indexes. */
1286 if (bfd_read (strings + BYTES_IN_WORD, 1, stringsize - BYTES_IN_WORD,
1287 abfd)
1288 != stringsize - BYTES_IN_WORD)
1289 {
1290 free (strings);
1291 return false;
1292 }
1293#endif
5c8444f8 1294
1afd2380
ILT		 1295 /* Ensure that a zero index yields an empty string. */
1296 strings[0] = '\0';
1297
7ac84736 1298 strings[stringsize - 1] = 0;
5c8444f8
ILT		 1299
1300 obj_aout_external_strings (abfd) = strings;
1301 obj_aout_external_string_size (abfd) = stringsize;
1302 }
1303
1304 return true;
1305}
1306
4298e311
ILT		 1307/* Translate an a.out symbol into a BFD symbol. The desc, other, type
1308 and symbol->value fields of CACHE_PTR will be set from the a.out
1309 nlist structure. This function is responsible for setting
1310 symbol->flags and symbol->section, and adjusting symbol->value. */
c188b0be 1311
9783e04a 1312static boolean
4298e311
ILT		 1313translate_from_native_sym_flags (abfd, cache_ptr)
1314 bfd *abfd;
1315 aout_symbol_type *cache_ptr;
9e2dad8e 1316{
4298e311
ILT		 1317 flagword visible;
1318
1319 if ((cache_ptr->type & N_STAB) != 0
1320 || cache_ptr->type == N_FN)
1321 {
1322 asection *sec;
1323
1324 /* This is a debugging symbol. */
1325
1326 cache_ptr->symbol.flags = BSF_DEBUGGING;
1327
1328 /* Work out the symbol section. */
1329 switch (cache_ptr->type & N_TYPE)
1330 {
1331 case N_TEXT:
1332 case N_FN:
1333 sec = obj_textsec (abfd);
1334 break;
1335 case N_DATA:
1336 sec = obj_datasec (abfd);
1337 break;
1338 case N_BSS:
1339 sec = obj_bsssec (abfd);
1340 break;
1341 default:
1342 case N_ABS:
4587b578 1343 sec = bfd_abs_section_ptr;
4298e311
ILT		 1344 break;
1345 }
1346
1347 cache_ptr->symbol.section = sec;
1348 cache_ptr->symbol.value -= sec->vma;
1349
1350 return true;
1351 }
1352
1353 /* Get the default visibility. This does not apply to all types, so
1354 we just hold it in a local variable to use if wanted. */
1355 if ((cache_ptr->type & N_EXT) == 0)
1356 visible = BSF_LOCAL;
1357 else
1358 visible = BSF_GLOBAL;
1359
1360 switch (cache_ptr->type)
6db82ea7 1361 {
4298e311
ILT		 1362 default:
1363 case N_ABS: case N_ABS | N_EXT:
4587b578 1364 cache_ptr->symbol.section = bfd_abs_section_ptr;
4298e311
ILT		 1365 cache_ptr->symbol.flags = visible;
1366 break;
1367
1368 case N_UNDF | N_EXT:
1369 if (cache_ptr->symbol.value != 0)
1370 {
1371 /* This is a common symbol. */
1372 cache_ptr->symbol.flags = BSF_GLOBAL;
4587b578 1373 cache_ptr->symbol.section = bfd_com_section_ptr;
4298e311
ILT		 1374 }
1375 else
1376 {
1377 cache_ptr->symbol.flags = 0;
4587b578 1378 cache_ptr->symbol.section = bfd_und_section_ptr;
4298e311
ILT		 1379 }
1380 break;
1381
1382 case N_TEXT: case N_TEXT | N_EXT:
1383 cache_ptr->symbol.section = obj_textsec (abfd);
1384 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1385 cache_ptr->symbol.flags = visible;
1386 break;
1387
2cd086e3
ILT		 1388 /* N_SETV symbols used to represent set vectors placed in the
1389 data section. They are no longer generated. Theoretically,
1390 it was possible to extract the entries and combine them with
1391 new ones, although I don't know if that was ever actually
1392 done. Unless that feature is restored, treat them as data
1393 symbols. */
1394 case N_SETV: case N_SETV | N_EXT:
4298e311
ILT		 1395 case N_DATA: case N_DATA | N_EXT:
1396 cache_ptr->symbol.section = obj_datasec (abfd);
1397 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1398 cache_ptr->symbol.flags = visible;
1399 break;
1400
1401 case N_BSS: case N_BSS | N_EXT:
1402 cache_ptr->symbol.section = obj_bsssec (abfd);
1403 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1404 cache_ptr->symbol.flags = visible;
1405 break;
1406
964affdc
DM		 1407 case N_SETA: case N_SETA | N_EXT:
1408 case N_SETT: case N_SETT | N_EXT:
1409 case N_SETD: case N_SETD | N_EXT:
1410 case N_SETB: case N_SETB | N_EXT:
ebd24135 1411 {
ebd24135 1412 asection *section;
4298e311 1413 arelent_chain *reloc;
ebd24135 1414 asection *into_section;
9783e04a 1415
4298e311
ILT		 1416 /* This is a set symbol. The name of the symbol is the name
1417 of the set (e.g., __CTOR_LIST__). The value of the symbol
1418 is the value to add to the set. We create a section with
1419 the same name as the symbol, and add a reloc to insert the
1420 appropriate value into the section.
1421
1422 This action is actually obsolete; it used to make the
1423 linker do the right thing, but the linker no longer uses
1424 this function. */
1425
1426 section = bfd_get_section_by_name (abfd, cache_ptr->symbol.name);
1427 if (section == NULL)
1428 {
1429 char *copy;
1430
1431 copy = bfd_alloc (abfd, strlen (cache_ptr->symbol.name) + 1);
1432 if (copy == NULL)
a9713b91 1433 return false;
4298e311
ILT		 1434
1435 strcpy (copy, cache_ptr->symbol.name);
1436 section = bfd_make_section (abfd, copy);
1437 if (section == NULL)
1438 return false;
1439 }
1440
1441 reloc = (arelent_chain *) bfd_alloc (abfd, sizeof (arelent_chain));
1442 if (reloc == NULL)
a9713b91 1443 return false;
9783e04a 1444
4298e311
ILT		 1445 /* Build a relocation entry for the constructor. */
1446 switch (cache_ptr->type & N_TYPE)
a99c3d70 1447 {
4298e311 1448 case N_SETA:
4587b578 1449 into_section = bfd_abs_section_ptr;
ebd24135
ILT		 1450 cache_ptr->type = N_ABS;
1451 break;
4298e311
ILT		 1452 case N_SETT:
1453 into_section = obj_textsec (abfd);
ebd24135
ILT		 1454 cache_ptr->type = N_TEXT;
1455 break;
4298e311
ILT		 1456 case N_SETD:
1457 into_section = obj_datasec (abfd);
ebd24135
ILT		 1458 cache_ptr->type = N_DATA;
1459 break;
4298e311
ILT		 1460 case N_SETB:
1461 into_section = obj_bsssec (abfd);
ebd24135
ILT		 1462 cache_ptr->type = N_BSS;
1463 break;
ebd24135 1464 }
88dfcd68 1465
4298e311
ILT		 1466 /* Build a relocation pointing into the constructor section
1467 pointing at the symbol in the set vector specified. */
ebd24135 1468 reloc->relent.addend = cache_ptr->symbol.value;
4298e311 1469 cache_ptr->symbol.section = into_section;
ebd24135 1470 reloc->relent.sym_ptr_ptr = into_section->symbol_ptr_ptr;
6db82ea7 1471
4298e311
ILT		 1472 /* We modify the symbol to belong to a section depending upon
1473 the name of the symbol, and add to the size of the section
1474 to contain a pointer to the symbol. Build a reloc entry to
1475 relocate to this symbol attached to this section. */
a8a916c8 1476 section->flags = SEC_CONSTRUCTOR | SEC_RELOC;
a99c3d70 1477
ebd24135
ILT		 1478 section->reloc_count++;
1479 section->alignment_power = 2;
a99c3d70 1480
ebd24135
ILT		 1481 reloc->next = section->constructor_chain;
1482 section->constructor_chain = reloc;
1483 reloc->relent.address = section->_raw_size;
4298e311
ILT		 1484 section->_raw_size += BYTES_IN_WORD;
1485
f42fe159 1486 reloc->relent.howto = CTOR_TABLE_RELOC_HOWTO(abfd);
a99c3d70 1487
ebd24135
ILT		 1488 cache_ptr->symbol.flags |= BSF_CONSTRUCTOR;
1489 }
1490 break;
0c205af2 1491
4298e311
ILT		 1492 case N_WARNING:
1493 /* This symbol is the text of a warning message. The next
1494 symbol is the symbol to associate the warning with. If a
1495 reference is made to that symbol, a warning is issued. */
1496 cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_WARNING;
4587b578 1497 cache_ptr->symbol.section = bfd_abs_section_ptr;
4298e311 1498 break;
ebd24135 1499
4298e311
ILT		 1500 case N_INDR: case N_INDR | N_EXT:
1501 /* An indirect symbol. This consists of two symbols in a row.
1502 The first symbol is the name of the indirection. The second
1503 symbol is the name of the target. A reference to the first
1504 symbol becomes a reference to the second. */
1505 cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_INDIRECT | visible;
4587b578 1506 cache_ptr->symbol.section = bfd_ind_section_ptr;
4298e311
ILT		 1507 break;
1508
1509 case N_WEAKU:
4587b578 1510 cache_ptr->symbol.section = bfd_und_section_ptr;
4298e311
ILT		 1511 cache_ptr->symbol.flags = BSF_WEAK;
1512 break;
1513
1514 case N_WEAKA:
4587b578 1515 cache_ptr->symbol.section = bfd_abs_section_ptr;
4298e311
ILT		 1516 cache_ptr->symbol.flags = BSF_WEAK;
1517 break;
1518
1519 case N_WEAKT:
1520 cache_ptr->symbol.section = obj_textsec (abfd);
1521 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1522 cache_ptr->symbol.flags = BSF_WEAK;
1523 break;
1524
1525 case N_WEAKD:
1526 cache_ptr->symbol.section = obj_datasec (abfd);
1527 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1528 cache_ptr->symbol.flags = BSF_WEAK;
1529 break;
1530
1531 case N_WEAKB:
1532 cache_ptr->symbol.section = obj_bsssec (abfd);
1533 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1534 cache_ptr->symbol.flags = BSF_WEAK;
1535 break;
a99c3d70 1536 }
4298e311 1537
9783e04a 1538 return true;
7ed4093a
SC		 1539}
1540
4298e311 1541/* Set the fields of SYM_POINTER according to CACHE_PTR. */
6db82ea7 1542
4c3721d5 1543static boolean
4298e311 1544translate_to_native_sym_flags (abfd, cache_ptr, sym_pointer)
8eb5d4be 1545 bfd *abfd;
4298e311
ILT		 1546 asymbol *cache_ptr;
1547 struct external_nlist *sym_pointer;
7ed4093a
SC		 1548{
1549 bfd_vma value = cache_ptr->value;
943fbd5b
KR		 1550 asection *sec;
1551 bfd_vma off;
7ed4093a 1552
4298e311
ILT		 1553 /* Mask out any existing type bits in case copying from one section
1554 to another. */
10dea9ed 1555 sym_pointer->e_type[0] &= ~N_TYPE;
a99c3d70 1556
943fbd5b
KR		 1557 sec = bfd_get_section (cache_ptr);
1558 off = 0;
1559
1560 if (sec == NULL)
4298e311 1561 {
943fbd5b
KR		 1562 /* This case occurs, e.g., for the *DEBUG* section of a COFF
1563 file. */
a1774c51
ILT		 1564 (*_bfd_error_handler)
1565 ("%s: can not represent section `%s' in a.out object file format",
1566 bfd_get_filename (abfd), bfd_get_section_name (abfd, sec));
4298e311
ILT		 1567 bfd_set_error (bfd_error_nonrepresentable_section);
1568 return false;
1569 }
943fbd5b
KR		 1570
1571 if (sec->output_section != NULL)
1572 {
1573 off = sec->output_offset;
1574 sec = sec->output_section;
1575 }
1576
1577 if (bfd_is_abs_section (sec))
1578 sym_pointer->e_type[0] |= N_ABS;
1579 else if (sec == obj_textsec (abfd))
1580 sym_pointer->e_type[0] |= N_TEXT;
1581 else if (sec == obj_datasec (abfd))
1582 sym_pointer->e_type[0] |= N_DATA;
1583 else if (sec == obj_bsssec (abfd))
1584 sym_pointer->e_type[0] |= N_BSS;
1585 else if (bfd_is_und_section (sec))
4587b578 1586 sym_pointer->e_type[0] = N_UNDF | N_EXT;
943fbd5b 1587 else if (bfd_is_ind_section (sec))
4587b578 1588 sym_pointer->e_type[0] = N_INDR;
943fbd5b 1589 else if (bfd_is_com_section (sec))
4298e311
ILT		 1590 sym_pointer->e_type[0] = N_UNDF | N_EXT;
1591 else
1592 {
a1774c51
ILT		 1593 (*_bfd_error_handler)
1594 ("%s: can not represent section `%s' in a.out object file format",
1595 bfd_get_filename (abfd), bfd_get_section_name (abfd, sec));
4298e311
ILT		 1596 bfd_set_error (bfd_error_nonrepresentable_section);
1597 return false;
1598 }
6f56c941 1599
6db82ea7 1600 /* Turn the symbol from section relative to absolute again */
943fbd5b 1601 value += sec->vma + off;
c188b0be 1602
4298e311 1603 if ((cache_ptr->flags & BSF_WARNING) != 0)
d7e34f67 1604 sym_pointer->e_type[0] = N_WARNING;
c188b0be 1605
4298e311
ILT		 1606 if ((cache_ptr->flags & BSF_DEBUGGING) != 0)
1607 sym_pointer->e_type[0] = ((aout_symbol_type *) cache_ptr)->type;
1608 else if ((cache_ptr->flags & BSF_GLOBAL) != 0)
3caa6924 1609 sym_pointer->e_type[0] |= N_EXT;
4298e311
ILT		 1610
1611 if ((cache_ptr->flags & BSF_CONSTRUCTOR) != 0)
1612 {
1613 int type = ((aout_symbol_type *) cache_ptr)->type;
1614 switch (type)
1615 {
1616 case N_ABS: type = N_SETA; break;
1617 case N_TEXT: type = N_SETT; break;
1618 case N_DATA: type = N_SETD; break;
1619 case N_BSS: type = N_SETB; break;
1620 }
1621 sym_pointer->e_type[0] = type;
1622 }
1623
1624 if ((cache_ptr->flags & BSF_WEAK) != 0)
1625 {
1626 int type;
1627
1628 switch (sym_pointer->e_type[0] & N_TYPE)
1629 {
1630 default:
1631 case N_ABS: type = N_WEAKA; break;
1632 case N_TEXT: type = N_WEAKT; break;
1633 case N_DATA: type = N_WEAKD; break;
1634 case N_BSS: type = N_WEAKB; break;
1635 case N_UNDF: type = N_WEAKU; break;
1636 }
1637 sym_pointer->e_type[0] = type;
1638 }
6db82ea7 1639
7ed4093a 1640 PUT_WORD(abfd, value, sym_pointer->e_value);
4c3721d5
ILT		 1641
1642 return true;
7ed4093a
SC		 1643}
1644\f
1645/* Native-level interface to symbols. */
1646
7ed4093a 1647asymbol *
8eb5d4be
JK		 1648NAME(aout,make_empty_symbol) (abfd)
1649 bfd *abfd;
9e2dad8e
JG		 1650{
1651 aout_symbol_type *new =
1652 (aout_symbol_type *)bfd_zalloc (abfd, sizeof (aout_symbol_type));
9783e04a 1653 if (!new)
a9713b91 1654 return NULL;
9e2dad8e 1655 new->symbol.the_bfd = abfd;
fa2b89f1 1656
9e2dad8e
JG		 1657 return &new->symbol;
1658}
7ed4093a 1659
0ee75d02
ILT		 1660/* Translate a set of internal symbols into external symbols. */
1661
fa77c704
ILT		 1662boolean
1663NAME(aout,translate_symbol_table) (abfd, in, ext, count, str, strsize, dynamic)
0ee75d02
ILT		 1664 bfd *abfd;
1665 aout_symbol_type *in;
1666 struct external_nlist *ext;
1667 bfd_size_type count;
1668 char *str;
1669 bfd_size_type strsize;
1670 boolean dynamic;
1671{
1672 struct external_nlist *ext_end;
1673
1674 ext_end = ext + count;
1675 for (; ext < ext_end; ext++, in++)
1676 {
1677 bfd_vma x;
1678
1679 x = GET_WORD (abfd, ext->e_strx);
1680 in->symbol.the_bfd = abfd;
ca1c6bec
ILT		 1681
1682 /* For the normal symbols, the zero index points at the number
1683 of bytes in the string table but is to be interpreted as the
1684 null string. For the dynamic symbols, the number of bytes in
1685 the string table is stored in the __DYNAMIC structure and the
1686 zero index points at an actual string. */
1687 if (x == 0 && ! dynamic)
1688 in->symbol.name = "";
1689 else if (x < strsize)
0ee75d02
ILT		 1690 in->symbol.name = str + x;
1691 else
1692 return false;
1693
1694 in->symbol.value = GET_SWORD (abfd, ext->e_value);
1695 in->desc = bfd_h_get_16 (abfd, ext->e_desc);
1696 in->other = bfd_h_get_8 (abfd, ext->e_other);
1697 in->type = bfd_h_get_8 (abfd, ext->e_type);
74942465 1698 in->symbol.udata.p = NULL;
0ee75d02 1699
4298e311 1700 if (! translate_from_native_sym_flags (abfd, in))
9783e04a 1701 return false;
0ee75d02
ILT		 1702
1703 if (dynamic)
1704 in->symbol.flags |= BSF_DYNAMIC;
1705 }
1706
1707 return true;
1708}
1709
1710/* We read the symbols into a buffer, which is discarded when this
1711 function exits. We read the strings into a buffer large enough to
1712 hold them all plus all the cached symbol entries. */
1713
7ed4093a 1714boolean
8eb5d4be
JK		 1715NAME(aout,slurp_symbol_table) (abfd)
1716 bfd *abfd;
9e2dad8e 1717{
5c8444f8 1718 struct external_nlist *old_external_syms;
9e2dad8e 1719 aout_symbol_type *cached;
5c8444f8 1720 size_t cached_size;
0f213cc2 1721
9e2dad8e 1722 /* If there's no work to be done, don't do any */
5c8444f8
ILT		 1723 if (obj_aout_symbols (abfd) != (aout_symbol_type *) NULL)
1724 return true;
1725
1726 old_external_syms = obj_aout_external_syms (abfd);
1727
1728 if (! aout_get_external_symbols (abfd))
1729 return false;
1730
fa77c704 1731 cached_size = (obj_aout_external_sym_count (abfd)
5c8444f8 1732 * sizeof (aout_symbol_type));
58142f10 1733 cached = (aout_symbol_type *) bfd_malloc (cached_size);
74942465 1734 if (cached == NULL && cached_size != 0)
58142f10 1735 return false;
74942465
ILT		 1736 if (cached_size != 0)
1737 memset (cached, 0, cached_size);
5c8444f8
ILT		 1738
1739 /* Convert from external symbol information to internal. */
fa77c704
ILT		 1740 if (! (NAME(aout,translate_symbol_table)
1741 (abfd, cached,
1742 obj_aout_external_syms (abfd),
1743 obj_aout_external_sym_count (abfd),
1744 obj_aout_external_strings (abfd),
1745 obj_aout_external_string_size (abfd),
1746 false)))
0f213cc2 1747 {
5c8444f8 1748 free (cached);
0f213cc2
KR		 1749 return false;
1750 }
1751
fa77c704 1752 bfd_get_symcount (abfd) = obj_aout_external_sym_count (abfd);
0f213cc2 1753
5c8444f8 1754 obj_aout_symbols (abfd) = cached;
0f213cc2 1755
5c8444f8
ILT		 1756 /* It is very likely that anybody who calls this function will not
1757 want the external symbol information, so if it was allocated
1758 because of our call to aout_get_external_symbols, we free it up
1759 right away to save space. */
1760 if (old_external_syms == (struct external_nlist *) NULL
1761 && obj_aout_external_syms (abfd) != (struct external_nlist *) NULL)
1762 {
7ac84736 1763#ifdef USE_MMAP
4fe6d901 1764 bfd_free_window (&obj_aout_sym_window (abfd));
7ac84736
KR		 1765#else
1766 free (obj_aout_external_syms (abfd));
1767#endif
5c8444f8 1768 obj_aout_external_syms (abfd) = NULL;
0ee75d02 1769 }
0f213cc2 1770
9e2dad8e
JG		 1771 return true;
1772}
0f213cc2 1773\f
d17fc4c9
ILT		 1774/* We use a hash table when writing out symbols so that we only write
1775 out a particular string once. This helps particularly when the
1776 linker writes out stabs debugging entries, because each different
1777 contributing object file tends to have many duplicate stabs
1778 strings.
1779
d63d0479
ILT		 1780 This hash table code breaks dbx on SunOS 4.1.3, so we don't do it
1781 if BFD_TRADITIONAL_FORMAT is set. */
0f213cc2 1782
d17fc4c9 1783static bfd_size_type add_to_stringtab
1afd2380
ILT		 1784 PARAMS ((bfd *, struct bfd_strtab_hash *, const char *, boolean));
1785static boolean emit_stringtab PARAMS ((bfd *, struct bfd_strtab_hash *));
d17fc4c9
ILT		 1786
1787/* Get the index of a string in a strtab, adding it if it is not
1afd2380 1788 already present. */
d17fc4c9
ILT		 1789
1790static INLINE bfd_size_type
1791add_to_stringtab (abfd, tab, str, copy)
0f213cc2 1792 bfd *abfd;
1afd2380 1793 struct bfd_strtab_hash *tab;
d17fc4c9
ILT		 1794 const char *str;
1795 boolean copy;
0f213cc2 1796{
1afd2380 1797 boolean hash;
435b470e 1798 bfd_size_type index;
0f213cc2 1799
d17fc4c9 1800 /* An index of 0 always means the empty string. */
204ba9e3 1801 if (str == 0 || *str == '\0')
d17fc4c9 1802 return 0;
0f213cc2 1803
1afd2380
ILT		 1804 /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx
1805 doesn't understand a hashed string table. */
1806 hash = true;
1807 if ((abfd->flags & BFD_TRADITIONAL_FORMAT) != 0)
1808 hash = false;
0f213cc2 1809
435b470e
ILT		 1810 index = _bfd_stringtab_add (tab, str, hash, copy);
1811
1812 if (index != (bfd_size_type) -1)
1813 {
1814 /* Add BYTES_IN_WORD to the return value to account for the
1815 space taken up by the string table size. */
1816 index += BYTES_IN_WORD;
1817 }
1818
1819 return index;
0f213cc2
KR		 1820}
1821
d17fc4c9
ILT		 1822/* Write out a strtab. ABFD is already at the right location in the
1823 file. */
1824
29e626eb 1825static boolean
d17fc4c9
ILT		 1826emit_stringtab (abfd, tab)
1827 register bfd *abfd;
1afd2380 1828 struct bfd_strtab_hash *tab;
0f213cc2 1829{
d17fc4c9 1830 bfd_byte buffer[BYTES_IN_WORD];
0f213cc2 1831
1afd2380
ILT		 1832 /* The string table starts with the size. */
1833 PUT_WORD (abfd, _bfd_stringtab_size (tab) + BYTES_IN_WORD, buffer);
29e626eb
ILT		 1834 if (bfd_write ((PTR) buffer, 1, BYTES_IN_WORD, abfd) != BYTES_IN_WORD)
1835 return false;
0f213cc2 1836
1afd2380 1837 return _bfd_stringtab_emit (abfd, tab);
0f213cc2 1838}
d17fc4c9 1839\f
4c3721d5 1840boolean
8eb5d4be
JK		 1841NAME(aout,write_syms) (abfd)
1842 bfd *abfd;
0f213cc2
KR		 1843{
1844 unsigned int count ;
1845 asymbol **generic = bfd_get_outsymbols (abfd);
1afd2380 1846 struct bfd_strtab_hash *strtab;
0f213cc2 1847
1afd2380
ILT		 1848 strtab = _bfd_stringtab_init ();
1849 if (strtab == NULL)
d17fc4c9 1850 return false;
0f213cc2
KR		 1851
1852 for (count = 0; count < bfd_get_symcount (abfd); count++)
1853 {
7ed4093a 1854 asymbol *g = generic[count];
d17fc4c9 1855 bfd_size_type indx;
7ed4093a 1856 struct external_nlist nsp;
6db82ea7 1857
1afd2380 1858 indx = add_to_stringtab (abfd, strtab, g->name, false);
d17fc4c9
ILT		 1859 if (indx == (bfd_size_type) -1)
1860 goto error_return;
1861 PUT_WORD (abfd, indx, (bfd_byte *) nsp.e_strx);
6db82ea7 1862
0f213cc2
KR		 1863 if (bfd_asymbol_flavour(g) == abfd->xvec->flavour)
1864 {
1865 bfd_h_put_16(abfd, aout_symbol(g)->desc, nsp.e_desc);
1866 bfd_h_put_8(abfd, aout_symbol(g)->other, nsp.e_other);
1867 bfd_h_put_8(abfd, aout_symbol(g)->type, nsp.e_type);
1868 }
7ed4093a 1869 else
0f213cc2
KR		 1870 {
1871 bfd_h_put_16(abfd,0, nsp.e_desc);
1872 bfd_h_put_8(abfd, 0, nsp.e_other);
1873 bfd_h_put_8(abfd, 0, nsp.e_type);
1874 }
7b02b4ed 1875
4298e311 1876 if (! translate_to_native_sym_flags (abfd, g, &nsp))
d17fc4c9 1877 goto error_return;
7b02b4ed 1878
4c3721d5
ILT		 1879 if (bfd_write((PTR)&nsp,1,EXTERNAL_NLIST_SIZE, abfd)
1880 != EXTERNAL_NLIST_SIZE)
d17fc4c9 1881 goto error_return;
7ed4093a 1882
ae115e51 1883 /* NB: `KEEPIT' currently overlays `udata.p', so set this only
0f213cc2
KR		 1884 here, at the end. */
1885 g->KEEPIT = count;
1886 }
7ed4093a 1887
1afd2380 1888 if (! emit_stringtab (abfd, strtab))
d17fc4c9
ILT		 1889 goto error_return;
1890
1afd2380 1891 _bfd_stringtab_free (strtab);
d17fc4c9
ILT		 1892
1893 return true;
1894
1895error_return:
1afd2380 1896 _bfd_stringtab_free (strtab);
d17fc4c9 1897 return false;
0f213cc2 1898}
7ed4093a 1899
0f213cc2 1900\f
326e32d7 1901long
8eb5d4be
JK		 1902NAME(aout,get_symtab) (abfd, location)
1903 bfd *abfd;
1904 asymbol **location;
3f7607af 1905{
7ed4093a
SC		 1906 unsigned int counter = 0;
1907 aout_symbol_type *symbase;
ce07dd7c 1908
326e32d7
ILT		 1909 if (!NAME(aout,slurp_symbol_table)(abfd))
1910 return -1;
ce07dd7c 1911
7ed4093a
SC		 1912 for (symbase = obj_aout_symbols(abfd); counter++ < bfd_get_symcount (abfd);)
1913 *(location++) = (asymbol *)( symbase++);
1914 *location++ =0;
ce07dd7c 1915 return bfd_get_symcount (abfd);
3f7607af 1916}
7ed4093a
SC		 1917
1918\f
1919/* Standard reloc stuff */
1920/* Output standard relocation information to a file in target byte order. */
1921
1922void
8eb5d4be
JK		 1923NAME(aout,swap_std_reloc_out) (abfd, g, natptr)
1924 bfd *abfd;
1925 arelent *g;
1926 struct reloc_std_external *natptr;
3f7607af 1927{
6db82ea7
SC		 1928 int r_index;
1929 asymbol *sym = *(g->sym_ptr_ptr);
1930 int r_extern;
1931 unsigned int r_length;
1932 int r_pcrel;
1933 int r_baserel, r_jmptable, r_relative;
6db82ea7 1934 asection *output_section = sym->section->output_section;
ce07dd7c 1935
6db82ea7 1936 PUT_WORD(abfd, g->address, natptr->r_address);
ce07dd7c 1937
6db82ea7
SC		 1938 r_length = g->howto->size ; /* Size as a power of two */
1939 r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */
c188b0be
DM		 1940 /* XXX This relies on relocs coming from a.out files. */
1941 r_baserel = (g->howto->type & 8) != 0;
cb9461ff
JK		 1942 r_jmptable = (g->howto->type & 16) != 0;
1943 r_relative = (g->howto->type & 32) != 0;
c188b0be 1944
728472f1
ILT		 1945#if 0
1946 /* For a standard reloc, the addend is in the object file. */
6db82ea7 1947 r_addend = g->addend + (*(g->sym_ptr_ptr))->section->output_section->vma;
728472f1 1948#endif
c188b0be 1949
6db82ea7
SC		 1950 /* name was clobbered by aout_write_syms to be symbol index */
1951
c188b0be 1952 /* If this relocation is relative to a symbol then set the
2768b3f7
SC		 1953 r_index to the symbols index, and the r_extern bit.
1954
1955 Absolute symbols can come in in two ways, either as an offset
1956 from the abs section, or as a symbol which has an abs value.
1957 check for that here
1958 */
c188b0be 1959
2768b3f7 1960
382f2a3d 1961 if (bfd_is_com_section (output_section)
4587b578
ILT		 1962 || bfd_is_abs_section (output_section)
1963 || bfd_is_und_section (output_section))
ce07dd7c 1964 {
4587b578 1965 if (bfd_abs_section_ptr->symbol == sym)
2768b3f7
SC		 1966 {
1967 /* Whoops, looked like an abs symbol, but is really an offset
1968 from the abs section */
1969 r_index = 0;
1970 r_extern = 0;
1971 }
c188b0be 1972 else
2768b3f7
SC		 1973 {
1974 /* Fill in symbol */
1975 r_extern = 1;
ae115e51 1976 r_index = (*(g->sym_ptr_ptr))->KEEPIT;
c188b0be 1977
2768b3f7 1978 }
ce07dd7c 1979 }
c188b0be 1980 else
ce07dd7c
KR		 1981 {
1982 /* Just an ordinary section */
1983 r_extern = 0;
c188b0be 1984 r_index = output_section->target_index;
ce07dd7c
KR		 1985 }
1986
6db82ea7
SC		 1987 /* now the fun stuff */
1988 if (abfd->xvec->header_byteorder_big_p != false) {
7ed4093a
SC		 1989 natptr->r_index[0] = r_index >> 16;
1990 natptr->r_index[1] = r_index >> 8;
1991 natptr->r_index[2] = r_index;
1992 natptr->r_type[0] =
6db82ea7
SC		 1993 (r_extern? RELOC_STD_BITS_EXTERN_BIG: 0)
1994 | (r_pcrel? RELOC_STD_BITS_PCREL_BIG: 0)
1995 | (r_baserel? RELOC_STD_BITS_BASEREL_BIG: 0)
1996 | (r_jmptable? RELOC_STD_BITS_JMPTABLE_BIG: 0)
1997 | (r_relative? RELOC_STD_BITS_RELATIVE_BIG: 0)
1998 | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG);
7ed4093a 1999 } else {
6db82ea7
SC		 2000 natptr->r_index[2] = r_index >> 16;
2001 natptr->r_index[1] = r_index >> 8;
2002 natptr->r_index[0] = r_index;
2003 natptr->r_type[0] =
2004 (r_extern? RELOC_STD_BITS_EXTERN_LITTLE: 0)
7ed4093a 2005 | (r_pcrel? RELOC_STD_BITS_PCREL_LITTLE: 0)
6db82ea7
SC		 2006 | (r_baserel? RELOC_STD_BITS_BASEREL_LITTLE: 0)
2007 | (r_jmptable? RELOC_STD_BITS_JMPTABLE_LITTLE: 0)
2008 | (r_relative? RELOC_STD_BITS_RELATIVE_LITTLE: 0)
2009 | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE);
2010 }
3f7607af 2011}
7ed4093a
SC		 2012
2013
2014/* Extended stuff */
2015/* Output extended relocation information to a file in target byte order. */
2016
2017void
8eb5d4be
JK		 2018NAME(aout,swap_ext_reloc_out) (abfd, g, natptr)
2019 bfd *abfd;
2020 arelent *g;
2021 register struct reloc_ext_external *natptr;
3f7607af 2022{
6db82ea7
SC		 2023 int r_index;
2024 int r_extern;
2025 unsigned int r_type;
2026 unsigned int r_addend;
c188b0be 2027 asymbol *sym = *(g->sym_ptr_ptr);
6db82ea7 2028 asection *output_section = sym->section->output_section;
c188b0be 2029
6db82ea7 2030 PUT_WORD (abfd, g->address, natptr->r_address);
c188b0be 2031
6db82ea7 2032 r_type = (unsigned int) g->howto->type;
7ed4093a 2033
ae115e51
ILT		 2034 r_addend = g->addend;
2035 if ((sym->flags & BSF_SECTION_SYM) != 0)
2036 r_addend += (*(g->sym_ptr_ptr))->section->output_section->vma;
7ed4093a 2037
c188b0be 2038 /* If this relocation is relative to a symbol then set the
2768b3f7
SC		 2039 r_index to the symbols index, and the r_extern bit.
2040
2041 Absolute symbols can come in in two ways, either as an offset
2042 from the abs section, or as a symbol which has an abs value.
c188b0be
DM		 2043 check for that here. */
2044
ae115e51 2045 if (bfd_is_abs_section (bfd_get_section (sym)))
2768b3f7 2046 {
2768b3f7 2047 r_extern = 0;
ae115e51
ILT		 2048 r_index = 0;
2049 }
2050 else if ((sym->flags & BSF_SECTION_SYM) == 0)
2768b3f7 2051 {
f69e888e
ILT		 2052 if (bfd_is_und_section (bfd_get_section (sym))
2053 || (sym->flags & BSF_GLOBAL) != 0)
2054 r_extern = 1;
2055 else
2056 r_extern = 0;
ae115e51 2057 r_index = (*(g->sym_ptr_ptr))->KEEPIT;
2768b3f7 2058 }
c188b0be 2059 else
ae115e51
ILT		 2060 {
2061 /* Just an ordinary section */
2062 r_extern = 0;
2063 r_index = output_section->target_index;
2064 }
c188b0be 2065
7ed4093a
SC		 2066 /* now the fun stuff */
2067 if (abfd->xvec->header_byteorder_big_p != false) {
2768b3f7
SC		 2068 natptr->r_index[0] = r_index >> 16;
2069 natptr->r_index[1] = r_index >> 8;
2070 natptr->r_index[2] = r_index;
2071 natptr->r_type[0] =
c188b0be
DM		 2072 ((r_extern? RELOC_EXT_BITS_EXTERN_BIG: 0)
2073 | (r_type << RELOC_EXT_BITS_TYPE_SH_BIG));
2768b3f7
SC		 2074 } else {
2075 natptr->r_index[2] = r_index >> 16;
2076 natptr->r_index[1] = r_index >> 8;
2077 natptr->r_index[0] = r_index;
2078 natptr->r_type[0] =
2079 (r_extern? RELOC_EXT_BITS_EXTERN_LITTLE: 0)
2080 | (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE);
2081 }
7ed4093a
SC		 2082
2083 PUT_WORD (abfd, r_addend, natptr->r_addend);
2084}
2085
6db82ea7
SC		 2086/* BFD deals internally with all things based from the section they're
2087 in. so, something in 10 bytes into a text section with a base of
c188b0be 2088 50 would have a symbol (.text+10) and know .text vma was 50.
6db82ea7
SC		 2089
2090 Aout keeps all it's symbols based from zero, so the symbol would
2091 contain 60. This macro subs the base of each section from the value
2092 to give the true offset from the section */
2093
2094
7ed4093a
SC		 2095#define MOVE_ADDRESS(ad) \
2096 if (r_extern) { \
6db82ea7
SC		 2097 /* undefined symbol */ \
2098 cache_ptr->sym_ptr_ptr = symbols + r_index; \
2099 cache_ptr->addend = ad; \
2100 } else { \
2101 /* defined, section relative. replace symbol with pointer to \
2102 symbol which points to section */ \
7ed4093a
SC		 2103 switch (r_index) { \
2104 case N_TEXT: \
2105 case N_TEXT | N_EXT: \
6db82ea7 2106 cache_ptr->sym_ptr_ptr = obj_textsec(abfd)->symbol_ptr_ptr; \
7ed4093a
SC		 2107 cache_ptr->addend = ad - su->textsec->vma; \
2108 break; \
2109 case N_DATA: \
2110 case N_DATA | N_EXT: \
6db82ea7 2111 cache_ptr->sym_ptr_ptr = obj_datasec(abfd)->symbol_ptr_ptr; \
7ed4093a
SC		 2112 cache_ptr->addend = ad - su->datasec->vma; \
2113 break; \
2114 case N_BSS: \
2115 case N_BSS | N_EXT: \
6db82ea7 2116 cache_ptr->sym_ptr_ptr = obj_bsssec(abfd)->symbol_ptr_ptr; \
7ed4093a
SC		 2117 cache_ptr->addend = ad - su->bsssec->vma; \
2118 break; \
6db82ea7 2119 default: \
7ed4093a
SC		 2120 case N_ABS: \
2121 case N_ABS | N_EXT: \
4587b578 2122 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \
6db82ea7 2123 cache_ptr->addend = ad; \
7ed4093a
SC		 2124 break; \
2125 } \
2126 } \
2127
2128void
2f675427 2129NAME(aout,swap_ext_reloc_in) (abfd, bytes, cache_ptr, symbols, symcount)
8eb5d4be
JK		 2130 bfd *abfd;
2131 struct reloc_ext_external *bytes;
2132 arelent *cache_ptr;
2133 asymbol **symbols;
2f675427 2134 bfd_size_type symcount;
7ed4093a 2135{
ae115e51 2136 unsigned int r_index;
7ed4093a
SC		 2137 int r_extern;
2138 unsigned int r_type;
6db82ea7 2139 struct aoutdata *su = &(abfd->tdata.aout_data->a);
7ed4093a
SC		 2140
2141 cache_ptr->address = (GET_SWORD (abfd, bytes->r_address));
2142
2143 /* now the fun stuff */
2144 if (abfd->xvec->header_byteorder_big_p != false) {
382f2a3d
ILT		 2145 r_index = (bytes->r_index[0] << 16)
2146 | (bytes->r_index[1] << 8)
2147 | bytes->r_index[2];
7ed4093a
SC		 2148 r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG));
2149 r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
2150 >> RELOC_EXT_BITS_TYPE_SH_BIG;
2151 } else {
382f2a3d
ILT		 2152 r_index = (bytes->r_index[2] << 16)
2153 | (bytes->r_index[1] << 8)
2154 | bytes->r_index[0];
7ed4093a
SC		 2155 r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE));
2156 r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
2157 >> RELOC_EXT_BITS_TYPE_SH_LITTLE;
2158 }
2159
2f675427
ILT		 2160 cache_ptr->howto = howto_table_ext + r_type;
2161
2162 /* Base relative relocs are always against the symbol table,
2163 regardless of the setting of r_extern. r_extern just reflects
2164 whether the symbol the reloc is against is local or global. */
2165 if (r_type == RELOC_BASE10
2166 || r_type == RELOC_BASE13
2167 || r_type == RELOC_BASE22)
2168 r_extern = 1;
2169
2170 if (r_extern && r_index > symcount)
773033d2
ILT		 2171 {
2172 /* We could arrange to return an error, but it might be useful
2173 to see the file even if it is bad. */
2174 r_extern = 0;
2175 r_index = N_ABS;
2176 }
2177
6db82ea7 2178 MOVE_ADDRESS(GET_SWORD(abfd, bytes->r_addend));
7ed4093a
SC		 2179}
2180
2181void
2f675427 2182NAME(aout,swap_std_reloc_in) (abfd, bytes, cache_ptr, symbols, symcount)
8eb5d4be
JK		 2183 bfd *abfd;
2184 struct reloc_std_external *bytes;
2185 arelent *cache_ptr;
2186 asymbol **symbols;
2f675427 2187 bfd_size_type symcount;
7ed4093a 2188{
ae115e51 2189 unsigned int r_index;
7ed4093a
SC		 2190 int r_extern;
2191 unsigned int r_length;
2192 int r_pcrel;
2193 int r_baserel, r_jmptable, r_relative;
6db82ea7 2194 struct aoutdata *su = &(abfd->tdata.aout_data->a);
ae115e51 2195 unsigned int howto_idx;
7ed4093a 2196
34dd8ba3 2197 cache_ptr->address = bfd_h_get_32 (abfd, bytes->r_address);
7ed4093a
SC		 2198
2199 /* now the fun stuff */
2200 if (abfd->xvec->header_byteorder_big_p != false) {
382f2a3d
ILT		 2201 r_index = (bytes->r_index[0] << 16)
2202 | (bytes->r_index[1] << 8)
2203 | bytes->r_index[2];
7ed4093a
SC		 2204 r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
2205 r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
2206 r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_BIG));
2207 r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG));
2208 r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG));
c188b0be 2209 r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_BIG)
7ed4093a
SC		 2210 >> RELOC_STD_BITS_LENGTH_SH_BIG;
2211 } else {
382f2a3d
ILT		 2212 r_index = (bytes->r_index[2] << 16)
2213 | (bytes->r_index[1] << 8)
2214 | bytes->r_index[0];
7ed4093a
SC		 2215 r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
2216 r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
2217 r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE));
2218 r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE));
2219 r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE));
c188b0be 2220 r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE)
7ed4093a
SC		 2221 >> RELOC_STD_BITS_LENGTH_SH_LITTLE;
2222 }
2223
cb9461ff
JK		 2224 howto_idx = r_length + 4 * r_pcrel + 8 * r_baserel
2225 + 16 * r_jmptable + 32 * r_relative;
c188b0be
DM		 2226 BFD_ASSERT (howto_idx < TABLE_SIZE (howto_table_std));
2227 cache_ptr->howto = howto_table_std + howto_idx;
ae115e51 2228 BFD_ASSERT (cache_ptr->howto->type != (unsigned int) -1);
7ed4093a 2229
2f675427
ILT		 2230 /* Base relative relocs are always against the symbol table,
2231 regardless of the setting of r_extern. r_extern just reflects
2232 whether the symbol the reloc is against is local or global. */
2233 if (r_baserel)
2234 r_extern = 1;
2235
2236 if (r_extern && r_index > symcount)
773033d2
ILT		 2237 {
2238 /* We could arrange to return an error, but it might be useful
2239 to see the file even if it is bad. */
2240 r_extern = 0;
2241 r_index = N_ABS;
2242 }
2243
7ed4093a
SC		 2244 MOVE_ADDRESS(0);
2245}
2246
5c8444f8 2247/* Read and swap the relocs for a section. */
7ed4093a
SC		 2248
2249boolean
8eb5d4be
JK		 2250NAME(aout,slurp_reloc_table) (abfd, asect, symbols)
2251 bfd *abfd;
2252 sec_ptr asect;
2253 asymbol **symbols;
7ed4093a
SC		 2254{
2255 unsigned int count;
2256 bfd_size_type reloc_size;
2257 PTR relocs;
2258 arelent *reloc_cache;
2259 size_t each_size;
0ee75d02
ILT		 2260 unsigned int counter = 0;
2261 arelent *cache_ptr;
7ed4093a 2262
5c8444f8
ILT		 2263 if (asect->relocation)
2264 return true;
7ed4093a 2265
5c8444f8
ILT		 2266 if (asect->flags & SEC_CONSTRUCTOR)
2267 return true;
7ed4093a 2268
0ee75d02 2269 if (asect == obj_datasec (abfd))
7ed4093a 2270 reloc_size = exec_hdr(abfd)->a_drsize;
0ee75d02 2271 else if (asect == obj_textsec (abfd))
7ed4093a 2272 reloc_size = exec_hdr(abfd)->a_trsize;
f42fe159
ILT		 2273 else if (asect == obj_bsssec (abfd))
2274 reloc_size = 0;
0ee75d02
ILT		 2275 else
2276 {
68241b2b 2277 bfd_set_error (bfd_error_invalid_operation);
0ee75d02
ILT		 2278 return false;
2279 }
2280
5c8444f8
ILT		 2281 if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0)
2282 return false;
2283
7ed4093a
SC		 2284 each_size = obj_reloc_entry_size (abfd);
2285
2286 count = reloc_size / each_size;
2287
58142f10 2288 reloc_cache = (arelent *) bfd_malloc ((size_t) (count * sizeof (arelent)));
5c8444f8 2289 if (reloc_cache == NULL && count != 0)
58142f10 2290 return false;
fa77c704 2291 memset (reloc_cache, 0, count * sizeof (arelent));
7ed4093a 2292
58142f10 2293 relocs = bfd_malloc ((size_t) reloc_size);
5c8444f8 2294 if (relocs == NULL && reloc_size != 0)
0ee75d02 2295 {
5c8444f8 2296 free (reloc_cache);
5c8444f8 2297 return false;
0ee75d02 2298 }
7ed4093a 2299
0ee75d02
ILT		 2300 if (bfd_read (relocs, 1, reloc_size, abfd) != reloc_size)
2301 {
5c8444f8
ILT		 2302 free (relocs);
2303 free (reloc_cache);
0ee75d02
ILT		 2304 return false;
2305 }
7ed4093a 2306
0ee75d02
ILT		 2307 cache_ptr = reloc_cache;
2308 if (each_size == RELOC_EXT_SIZE)
2309 {
2310 register struct reloc_ext_external *rptr =
2311 (struct reloc_ext_external *) relocs;
7ed4093a 2312
0ee75d02 2313 for (; counter < count; counter++, rptr++, cache_ptr++)
2f675427
ILT		 2314 NAME(aout,swap_ext_reloc_in) (abfd, rptr, cache_ptr, symbols,
2315 bfd_get_symcount (abfd));
7ed4093a 2316 }
0ee75d02
ILT		 2317 else
2318 {
5c8444f8
ILT		 2319 register struct reloc_std_external *rptr =
2320 (struct reloc_std_external *) relocs;
7ed4093a 2321
0ee75d02 2322 for (; counter < count; counter++, rptr++, cache_ptr++)
2f675427
ILT		 2323 MY_swap_std_reloc_in (abfd, rptr, cache_ptr, symbols,
2324 bfd_get_symcount (abfd));
7ed4093a
SC		 2325 }
2326
5c8444f8
ILT		 2327 free (relocs);
2328
7ed4093a 2329 asect->relocation = reloc_cache;
0ee75d02 2330 asect->reloc_count = cache_ptr - reloc_cache;
5c8444f8 2331
7ed4093a
SC		 2332 return true;
2333}
2334
7ed4093a
SC		 2335/* Write out a relocation section into an object file. */
2336
2337boolean
8eb5d4be
JK		 2338NAME(aout,squirt_out_relocs) (abfd, section)
2339 bfd *abfd;
2340 asection *section;
7ed4093a
SC		 2341{
2342 arelent **generic;
2343 unsigned char *native, *natptr;
2344 size_t each_size;
2345
2346 unsigned int count = section->reloc_count;
2347 size_t natsize;
2348
2349 if (count == 0) return true;
2350
2351 each_size = obj_reloc_entry_size (abfd);
2352 natsize = each_size * count;
2353 native = (unsigned char *) bfd_zalloc (abfd, natsize);
a9713b91 2354 if (!native)
7ed4093a 2355 return false;
7ed4093a
SC		 2356
2357 generic = section->orelocation;
2358
c188b0be 2359 if (each_size == RELOC_EXT_SIZE)
7ed4093a
SC		 2360 {
2361 for (natptr = native;
2362 count != 0;
2363 --count, natptr += each_size, ++generic)
2364 NAME(aout,swap_ext_reloc_out) (abfd, *generic, (struct reloc_ext_external *)natptr);
2365 }
c188b0be 2366 else
7ed4093a
SC		 2367 {
2368 for (natptr = native;
2369 count != 0;
2370 --count, natptr += each_size, ++generic)
f42fe159 2371 MY_swap_std_reloc_out(abfd, *generic, (struct reloc_std_external *)natptr);
7ed4093a
SC		 2372 }
2373
2374 if ( bfd_write ((PTR) native, 1, natsize, abfd) != natsize) {
2375 bfd_release(abfd, native);
2376 return false;
2377 }
2378 bfd_release (abfd, native);
2379
2380 return true;
2381}
2382
2383/* This is stupid. This function should be a boolean predicate */
326e32d7 2384long
8eb5d4be
JK		 2385NAME(aout,canonicalize_reloc) (abfd, section, relptr, symbols)
2386 bfd *abfd;
2387 sec_ptr section;
2388 arelent **relptr;
2389 asymbol **symbols;
7ed4093a
SC		 2390{
2391 arelent *tblptr = section->relocation;
2392 unsigned int count;
2393
4f019d04
ILT		 2394 if (section == obj_bsssec (abfd))
2395 {
2396 *relptr = NULL;
2397 return 0;
2398 }
2399
7ed4093a 2400 if (!(tblptr || NAME(aout,slurp_reloc_table)(abfd, section, symbols)))
326e32d7 2401 return -1;
7ed4093a
SC		 2402
2403 if (section->flags & SEC_CONSTRUCTOR) {
2404 arelent_chain *chain = section->constructor_chain;
2405 for (count = 0; count < section->reloc_count; count ++) {
2406 *relptr ++ = &chain->relent;
2407 chain = chain->next;
2408 }
2409 }
2410 else {
2411 tblptr = section->relocation;
7ed4093a 2412
c188b0be 2413 for (count = 0; count++ < section->reloc_count;)
7ed4093a
SC		 2414 {
2415 *relptr++ = tblptr++;
2416 }
2417 }
2418 *relptr = 0;
2419
2420 return section->reloc_count;
2421}
2422
326e32d7 2423long
8eb5d4be
JK		 2424NAME(aout,get_reloc_upper_bound) (abfd, asect)
2425 bfd *abfd;
2426 sec_ptr asect;
7ed4093a
SC		 2427{
2428 if (bfd_get_format (abfd) != bfd_object) {
68241b2b 2429 bfd_set_error (bfd_error_invalid_operation);
326e32d7 2430 return -1;
7ed4093a
SC		 2431 }
2432 if (asect->flags & SEC_CONSTRUCTOR) {
2433 return (sizeof (arelent *) * (asect->reloc_count+1));
2434 }
2435
7ed4093a 2436 if (asect == obj_datasec (abfd))
fa77c704
ILT		 2437 return (sizeof (arelent *)
2438 * ((exec_hdr(abfd)->a_drsize / obj_reloc_entry_size (abfd))
2439 + 1));
7ed4093a
SC		 2440
2441 if (asect == obj_textsec (abfd))
fa77c704
ILT		 2442 return (sizeof (arelent *)
2443 * ((exec_hdr(abfd)->a_trsize / obj_reloc_entry_size (abfd))
2444 + 1));
7ed4093a 2445
4f019d04
ILT		 2446 if (asect == obj_bsssec (abfd))
2447 return sizeof (arelent *);
2448
f42fe159
ILT		 2449 if (asect == obj_bsssec (abfd))
2450 return 0;
2451
68241b2b 2452 bfd_set_error (bfd_error_invalid_operation);
326e32d7 2453 return -1;
7ed4093a
SC		 2454}
2455
2456\f
326e32d7 2457long
8eb5d4be
JK		 2458NAME(aout,get_symtab_upper_bound) (abfd)
2459 bfd *abfd;
7ed4093a 2460{
326e32d7
ILT		 2461 if (!NAME(aout,slurp_symbol_table)(abfd))
2462 return -1;
7ed4093a
SC		 2463
2464 return (bfd_get_symcount (abfd)+1) * (sizeof (aout_symbol_type *));
2465}
728472f1
ILT		 2466
2467/*ARGSUSED*/
7ed4093a 2468 alent *
8eb5d4be
JK		 2469NAME(aout,get_lineno) (ignore_abfd, ignore_symbol)
2470 bfd *ignore_abfd;
2471 asymbol *ignore_symbol;
7ed4093a
SC		 2472{
2473return (alent *)NULL;
2474}
2475
728472f1 2476/*ARGSUSED*/
c188b0be 2477void
8eb5d4be
JK		 2478NAME(aout,get_symbol_info) (ignore_abfd, symbol, ret)
2479 bfd *ignore_abfd;
2480 asymbol *symbol;
2481 symbol_info *ret;
34dd8ba3
JG		 2482{
2483 bfd_symbol_info (symbol, ret);
2484
2485 if (ret->type == '?')
2486 {
2487 int type_code = aout_symbol(symbol)->type & 0xff;
2488 CONST char *stab_name = aout_stab_name(type_code);
2489 static char buf[10];
2490
2491 if (stab_name == NULL)
2492 {
2493 sprintf(buf, "(%d)", type_code);
2494 stab_name = buf;
2495 }
2496 ret->type = '-';
2497 ret->stab_other = (unsigned)(aout_symbol(symbol)->other & 0xff);
2498 ret->stab_desc = (unsigned)(aout_symbol(symbol)->desc & 0xffff);
2499 ret->stab_name = stab_name;
2500 }
2501}
7ed4093a 2502
728472f1 2503/*ARGSUSED*/
c188b0be 2504void
8eb5d4be
JK		 2505NAME(aout,print_symbol) (ignore_abfd, afile, symbol, how)
2506 bfd *ignore_abfd;
2507 PTR afile;
2508 asymbol *symbol;
2509 bfd_print_symbol_type how;
7ed4093a
SC		 2510{
2511 FILE *file = (FILE *)afile;
2512
2513 switch (how) {
9e2dad8e 2514 case bfd_print_symbol_name:
fb3be09b
JG		 2515 if (symbol->name)
2516 fprintf(file,"%s", symbol->name);
7ed4093a 2517 break;
9e2dad8e 2518 case bfd_print_symbol_more:
7ed4093a
SC		 2519 fprintf(file,"%4x %2x %2x",(unsigned)(aout_symbol(symbol)->desc & 0xffff),
2520 (unsigned)(aout_symbol(symbol)->other & 0xff),
2521 (unsigned)(aout_symbol(symbol)->type));
2522 break;
9e2dad8e 2523 case bfd_print_symbol_all:
7ed4093a 2524 {
6db82ea7
SC		 2525 CONST char *section_name = symbol->section->name;
2526
7ed4093a
SC		 2527
2528 bfd_print_symbol_vandf((PTR)file,symbol);
2529
fb3be09b 2530 fprintf(file," %-5s %04x %02x %02x",
7ed4093a
SC		 2531 section_name,
2532 (unsigned)(aout_symbol(symbol)->desc & 0xffff),
2533 (unsigned)(aout_symbol(symbol)->other & 0xff),
9e2dad8e 2534 (unsigned)(aout_symbol(symbol)->type & 0xff));
fb3be09b
JG		 2535 if (symbol->name)
2536 fprintf(file," %s", symbol->name);
7ed4093a
SC		 2537 }
2538 break;
2539 }
2540}
2541
c3246d9b
ILT		 2542/* If we don't have to allocate more than 1MB to hold the generic
2543 symbols, we use the generic minisymbol methord: it's faster, since
2544 it only translates the symbols once, not multiple times. */
2545#define MINISYM_THRESHOLD (1000000 / sizeof (asymbol))
2546
2547/* Read minisymbols. For minisymbols, we use the unmodified a.out
2548 symbols. The minisymbol_to_symbol function translates these into
2549 BFD asymbol structures. */
2550
2551long
2552NAME(aout,read_minisymbols) (abfd, dynamic, minisymsp, sizep)
2553 bfd *abfd;
2554 boolean dynamic;
2555 PTR *minisymsp;
2556 unsigned int *sizep;
2557{
2558 if (dynamic)
2559 {
2560 /* We could handle the dynamic symbols here as well, but it's
2561 easier to hand them off. */
2562 return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep);
2563 }
2564
2565 if (! aout_get_external_symbols (abfd))
2566 return -1;
2567
2568 if (obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD)
2569 return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep);
2570
2571 *minisymsp = (PTR) obj_aout_external_syms (abfd);
2572
2573 /* By passing the external symbols back from this routine, we are
2574 giving up control over the memory block. Clear
2575 obj_aout_external_syms, so that we do not try to free it
2576 ourselves. */
2577 obj_aout_external_syms (abfd) = NULL;
2578
2579 *sizep = EXTERNAL_NLIST_SIZE;
2580 return obj_aout_external_sym_count (abfd);
2581}
2582
2583/* Convert a minisymbol to a BFD asymbol. A minisymbol is just an
2584 unmodified a.out symbol. The SYM argument is a structure returned
2585 by bfd_make_empty_symbol, which we fill in here. */
2586
2587asymbol *
2588NAME(aout,minisymbol_to_symbol) (abfd, dynamic, minisym, sym)
2589 bfd *abfd;
2590 boolean dynamic;
2591 const PTR minisym;
2592 asymbol *sym;
2593{
2594 if (dynamic
2595 || obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD)
2596 return _bfd_generic_minisymbol_to_symbol (abfd, dynamic, minisym, sym);
2597
2598 memset (sym, 0, sizeof (aout_symbol_type));
2599
2600 /* We call translate_symbol_table to translate a single symbol. */
2601 if (! (NAME(aout,translate_symbol_table)
2602 (abfd,
2603 (aout_symbol_type *) sym,
2604 (struct external_nlist *) minisym,
2605 (bfd_size_type) 1,
2606 obj_aout_external_strings (abfd),
2607 obj_aout_external_string_size (abfd),
2608 false)))
2609 return NULL;
2610
2611 return sym;
2612}
2613
c188b0be 2614/*
6724ff46 2615 provided a BFD, a section and an offset into the section, calculate
7ed4093a
SC		 2616 and return the name of the source file and the line nearest to the
2617 wanted location.
2618*/
c188b0be 2619
7ed4093a 2620boolean
8eb5d4be
JK		 2621NAME(aout,find_nearest_line)
2622 (abfd, section, symbols, offset, filename_ptr, functionname_ptr, line_ptr)
2623 bfd *abfd;
2624 asection *section;
2625 asymbol **symbols;
2626 bfd_vma offset;
2627 CONST char **filename_ptr;
2628 CONST char **functionname_ptr;
2629 unsigned int *line_ptr;
7ed4093a
SC		 2630{
2631 /* Run down the file looking for the filename, function and linenumber */
2632 asymbol **p;
6db82ea7
SC		 2633 CONST char *directory_name = NULL;
2634 CONST char *main_file_name = NULL;
2635 CONST char *current_file_name = NULL;
2636 CONST char *line_file_name = NULL; /* Value of current_file_name at line number. */
ae115e51 2637 bfd_vma low_line_vma = 0;
7ed4093a
SC		 2638 bfd_vma low_func_vma = 0;
2639 asymbol *func = 0;
f1c6dd5d
ILT		 2640 size_t filelen, funclen;
2641 char *buf;
2642
7ed4093a
SC		 2643 *filename_ptr = abfd->filename;
2644 *functionname_ptr = 0;
2645 *line_ptr = 0;
2646 if (symbols != (asymbol **)NULL) {
2647 for (p = symbols; *p; p++) {
2648 aout_symbol_type *q = (aout_symbol_type *)(*p);
98d43107 2649 next:
7ed4093a
SC		 2650 switch (q->type){
2651 case N_SO:
3f7607af 2652 main_file_name = current_file_name = q->symbol.name;
98d43107
JG		 2653 /* Look ahead to next symbol to check if that too is an N_SO. */
2654 p++;
2655 if (*p == NULL)
2656 break;
2657 q = (aout_symbol_type *)(*p);
6db82ea7 2658 if (q->type != (int)N_SO)
98d43107
JG		 2659 goto next;
2660
2661 /* Found a second N_SO First is directory; second is filename. */
3f7607af
PB		 2662 directory_name = current_file_name;
2663 main_file_name = current_file_name = q->symbol.name;
2664 if (obj_textsec(abfd) != section)
2665 goto done;
2666 break;
2667 case N_SOL:
2668 current_file_name = q->symbol.name;
7ed4093a 2669 break;
3f7607af 2670
7ed4093a
SC		 2671 case N_SLINE:
2672
2673 case N_DSLINE:
2674 case N_BSLINE:
ae115e51
ILT		 2675 /* We'll keep this if it resolves nearer than the one we have
2676 already. */
2677 if (q->symbol.value >= low_line_vma
2678 && q->symbol.value <= offset)
2679 {
2680 *line_ptr = q->desc;
2681 low_line_vma = q->symbol.value;
2682 line_file_name = current_file_name;
2683 }
7ed4093a
SC		 2684 break;
2685 case N_FUN:
2686 {
2687 /* We'll keep this if it is nearer than the one we have already */
2688 if (q->symbol.value >= low_func_vma &&
2689 q->symbol.value <= offset) {
2690 low_func_vma = q->symbol.value;
2691 func = (asymbol *)q;
2692 }
ae115e51 2693 else if (q->symbol.value > offset)
3f7607af 2694 goto done;
7ed4093a
SC		 2695 }
2696 break;
2697 }
2698 }
2699 }
3f7607af
PB		 2700
2701 done:
f1c6dd5d 2702 if (*line_ptr != 0)
3f7607af 2703 main_file_name = line_file_name;
f1c6dd5d
ILT		 2704
2705 if (main_file_name == NULL
2706 || main_file_name[0] == '/'
2707 || directory_name == NULL)
2708 filelen = 0;
2709 else
2710 filelen = strlen (directory_name) + strlen (main_file_name);
2711 if (func == NULL)
2712 funclen = 0;
2713 else
2714 funclen = strlen (bfd_asymbol_name (func));
2715
2716 if (adata (abfd).line_buf != NULL)
2717 free (adata (abfd).line_buf);
2718 if (filelen + funclen == 0)
2719 adata (abfd).line_buf = buf = NULL;
2720 else
2721 {
58142f10
ILT		 2722 buf = (char *) bfd_malloc (filelen + funclen + 2);
2723 adata (abfd).line_buf = buf;
2724 if (buf == NULL)
2725 return false;
f1c6dd5d
ILT		 2726 }
2727
2728 if (main_file_name != NULL)
2729 {
3f7607af 2730 if (main_file_name[0] == '/' || directory_name == NULL)
f1c6dd5d
ILT		 2731 *filename_ptr = main_file_name;
2732 else
2733 {
2734 sprintf (buf, "%s%s", directory_name, main_file_name);
2735 *filename_ptr = buf;
2736 buf += filelen + 1;
2737 }
2738 }
2739
ae115e51
ILT		 2740 if (func)
2741 {
f1c6dd5d 2742 const char *function = func->name;
ae115e51
ILT		 2743 char *p;
2744
2745 /* The caller expects a symbol name. We actually have a
2746 function name, without the leading underscore. Put the
2747 underscore back in, so that the caller gets a symbol name. */
2748 if (bfd_get_symbol_leading_char (abfd) == '\0')
f1c6dd5d 2749 strcpy (buf, function);
ae115e51
ILT		 2750 else
2751 {
f1c6dd5d
ILT		 2752 buf[0] = bfd_get_symbol_leading_char (abfd);
2753 strcpy (buf + 1, function);
ae115e51 2754 }
ae115e51 2755 /* Have to remove : stuff */
f1c6dd5d 2756 p = strchr (buf, ':');
ae115e51
ILT		 2757 if (p != NULL)
2758 *p = '\0';
f1c6dd5d 2759 *functionname_ptr = buf;
ae115e51 2760 }
f1c6dd5d 2761
7ed4093a 2762 return true;
7ed4093a
SC		 2763}
2764
728472f1 2765/*ARGSUSED*/
c188b0be 2766int
8eb5d4be
JK		 2767NAME(aout,sizeof_headers) (abfd, execable)
2768 bfd *abfd;
2769 boolean execable;
7ed4093a 2770{
6db82ea7 2771 return adata(abfd).exec_bytes_size;
7ed4093a 2772}
5c8444f8
ILT		 2773
2774/* Free all information we have cached for this BFD. We can always
2775 read it again later if we need it. */
2776
2777boolean
2778NAME(aout,bfd_free_cached_info) (abfd)
2779 bfd *abfd;
2780{
2781 asection *o;
2782
c4dd531f
ILT		 2783 if (bfd_get_format (abfd) != bfd_object)
2784 return true;
2785
4852416e
DHW		 2786#define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; }
2787 BFCI_FREE (obj_aout_symbols (abfd));
7ac84736 2788#ifdef USE_MMAP
4fe6d901
KR		 2789 obj_aout_external_syms (abfd) = 0;
2790 bfd_free_window (&obj_aout_sym_window (abfd));
2791 bfd_free_window (&obj_aout_string_window (abfd));
2792 obj_aout_external_strings (abfd) = 0;
7ac84736
KR		 2793#else
2794 BFCI_FREE (obj_aout_external_syms (abfd));
2795 BFCI_FREE (obj_aout_external_strings (abfd));
2796#endif
5c8444f8 2797 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
4852416e
DHW		 2798 BFCI_FREE (o->relocation);
2799#undef BFCI_FREE
5c8444f8
ILT		 2800
2801 return true;
2802}
4c3721d5
ILT		 2803\f
2804/* a.out link code. */
2805
4c3721d5
ILT		 2806static boolean aout_link_add_object_symbols
2807 PARAMS ((bfd *, struct bfd_link_info *));
2808static boolean aout_link_check_archive_element
2809 PARAMS ((bfd *, struct bfd_link_info *, boolean *));
4c3721d5
ILT		 2810static boolean aout_link_free_symbols PARAMS ((bfd *));
2811static boolean aout_link_check_ar_symbols
2812 PARAMS ((bfd *, struct bfd_link_info *, boolean *pneeded));
2813static boolean aout_link_add_symbols
2814 PARAMS ((bfd *, struct bfd_link_info *));
2815
2816/* Routine to create an entry in an a.out link hash table. */
2817
e85e8bfe
ILT		 2818struct bfd_hash_entry *
2819NAME(aout,link_hash_newfunc) (entry, table, string)
4c3721d5
ILT		 2820 struct bfd_hash_entry *entry;
2821 struct bfd_hash_table *table;
2822 const char *string;
2823{
2824 struct aout_link_hash_entry *ret = (struct aout_link_hash_entry *) entry;
2825
2826 /* Allocate the structure if it has not already been allocated by a
2827 subclass. */
2828 if (ret == (struct aout_link_hash_entry *) NULL)
2829 ret = ((struct aout_link_hash_entry *)
2830 bfd_hash_allocate (table, sizeof (struct aout_link_hash_entry)));
9783e04a 2831 if (ret == (struct aout_link_hash_entry *) NULL)
a9713b91 2832 return (struct bfd_hash_entry *) ret;
4c3721d5
ILT		 2833
2834 /* Call the allocation method of the superclass. */
2835 ret = ((struct aout_link_hash_entry *)
2836 _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2837 table, string));
9783e04a 2838 if (ret)
35fee729
ILT		 2839 {
2840 /* Set local fields. */
2841 ret->written = false;
2842 ret->indx = -1;
2843 }
4c3721d5
ILT		 2844
2845 return (struct bfd_hash_entry *) ret;
2846}
2847
e85e8bfe
ILT		 2848/* Initialize an a.out link hash table. */
2849
2850boolean
2851NAME(aout,link_hash_table_init) (table, abfd, newfunc)
2852 struct aout_link_hash_table *table;
2853 bfd *abfd;
2854 struct bfd_hash_entry *(*newfunc) PARAMS ((struct bfd_hash_entry *,
2855 struct bfd_hash_table *,
2856 const char *));
2857{
2858 return _bfd_link_hash_table_init (&table->root, abfd, newfunc);
2859}
2860
4c3721d5
ILT		 2861/* Create an a.out link hash table. */
2862
2863struct bfd_link_hash_table *
2864NAME(aout,link_hash_table_create) (abfd)
2865 bfd *abfd;
2866{
2867 struct aout_link_hash_table *ret;
2868
2869 ret = ((struct aout_link_hash_table *)
c3246d9b
ILT		 2870 bfd_alloc (abfd, sizeof (struct aout_link_hash_table)));
2871 if (ret == NULL)
a9713b91 2872 return (struct bfd_link_hash_table *) NULL;
e85e8bfe
ILT		 2873 if (! NAME(aout,link_hash_table_init) (ret, abfd,
2874 NAME(aout,link_hash_newfunc)))
4c3721d5
ILT		 2875 {
2876 free (ret);
2877 return (struct bfd_link_hash_table *) NULL;
2878 }
2879 return &ret->root;
2880}
2881
4c3721d5
ILT		 2882/* Given an a.out BFD, add symbols to the global hash table as
2883 appropriate. */
2884
2885boolean
2886NAME(aout,link_add_symbols) (abfd, info)
2887 bfd *abfd;
2888 struct bfd_link_info *info;
2889{
2890 switch (bfd_get_format (abfd))
2891 {
2892 case bfd_object:
2893 return aout_link_add_object_symbols (abfd, info);
2894 case bfd_archive:
2895 return _bfd_generic_link_add_archive_symbols
2896 (abfd, info, aout_link_check_archive_element);
2897 default:
68241b2b 2898 bfd_set_error (bfd_error_wrong_format);
4c3721d5
ILT		 2899 return false;
2900 }
2901}
2902
2903/* Add symbols from an a.out object file. */
2904
2905static boolean
2906aout_link_add_object_symbols (abfd, info)
2907 bfd *abfd;
2908 struct bfd_link_info *info;
2909{
5c8444f8 2910 if (! aout_get_external_symbols (abfd))
4c3721d5
ILT		 2911 return false;
2912 if (! aout_link_add_symbols (abfd, info))
2913 return false;
2914 if (! info->keep_memory)
2915 {
2916 if (! aout_link_free_symbols (abfd))
2917 return false;
2918 }
2919 return true;
2920}
2921
2922/* Check a single archive element to see if we need to include it in
2923 the link. *PNEEDED is set according to whether this element is
2924 needed in the link or not. This is called from
2925 _bfd_generic_link_add_archive_symbols. */
2926
2927static boolean
2928aout_link_check_archive_element (abfd, info, pneeded)
2929 bfd *abfd;
2930 struct bfd_link_info *info;
2931 boolean *pneeded;
2932{
5c8444f8 2933 if (! aout_get_external_symbols (abfd))
4c3721d5
ILT		 2934 return false;
2935
2936 if (! aout_link_check_ar_symbols (abfd, info, pneeded))
2937 return false;
2938
2939 if (*pneeded)
2940 {
2941 if (! aout_link_add_symbols (abfd, info))
2942 return false;
2943 }
2944
1afd2380 2945 if (! info->keep_memory || ! *pneeded)
4c3721d5
ILT		 2946 {
2947 if (! aout_link_free_symbols (abfd))
2948 return false;
2949 }
2950
2951 return true;
2952}
2953
4c3721d5
ILT		 2954/* Free up the internal symbols read from an a.out file. */
2955
2956static boolean
2957aout_link_free_symbols (abfd)
2958 bfd *abfd;
2959{
2960 if (obj_aout_external_syms (abfd) != (struct external_nlist *) NULL)
2961 {
7ac84736 2962#ifdef USE_MMAP
4fe6d901 2963 bfd_free_window (&obj_aout_sym_window (abfd));
7ac84736
KR		 2964#else
2965 free ((PTR) obj_aout_external_syms (abfd));
2966#endif
4c3721d5
ILT		 2967 obj_aout_external_syms (abfd) = (struct external_nlist *) NULL;
2968 }
2969 if (obj_aout_external_strings (abfd) != (char *) NULL)
2970 {
7ac84736 2971#ifdef USE_MMAP
4fe6d901 2972 bfd_free_window (&obj_aout_string_window (abfd));
7ac84736
KR		 2973#else
2974 free ((PTR) obj_aout_external_strings (abfd));
2975#endif
4c3721d5
ILT		 2976 obj_aout_external_strings (abfd) = (char *) NULL;
2977 }
2978 return true;
2979}
2980
2981/* Look through the internal symbols to see if this object file should
2982 be included in the link. We should include this object file if it
2983 defines any symbols which are currently undefined. If this object
2984 file defines a common symbol, then we may adjust the size of the
2985 known symbol but we do not include the object file in the link
2986 (unless there is some other reason to include it). */
2987
2988static boolean
2989aout_link_check_ar_symbols (abfd, info, pneeded)
2990 bfd *abfd;
2991 struct bfd_link_info *info;
2992 boolean *pneeded;
2993{
2994 register struct external_nlist *p;
2995 struct external_nlist *pend;
2996 char *strings;
2997
2998 *pneeded = false;
2999
3000 /* Look through all the symbols. */
3001 p = obj_aout_external_syms (abfd);
3002 pend = p + obj_aout_external_sym_count (abfd);
3003 strings = obj_aout_external_strings (abfd);
3004 for (; p < pend; p++)
3005 {
3006 int type = bfd_h_get_8 (abfd, p->e_type);
3007 const char *name;
3008 struct bfd_link_hash_entry *h;
3009
4298e311
ILT		 3010 /* Ignore symbols that are not externally visible. This is an
3011 optimization only, as we check the type more thoroughly
3012 below. */
4587b578
ILT		 3013 if (((type & N_EXT) == 0
3014 || (type & N_STAB) != 0
3015 || type == N_FN)
4298e311
ILT		 3016 && type != N_WEAKA
3017 && type != N_WEAKT
3018 && type != N_WEAKD
3019 && type != N_WEAKB)
9b39ed6b
ILT		 3020 {
3021 if (type == N_WARNING
3022 || type == N_INDR)
3023 ++p;
3024 continue;
3025 }
4c3721d5
ILT		 3026
3027 name = strings + GET_WORD (abfd, p->e_strx);
3028 h = bfd_link_hash_lookup (info->hash, name, false, false, true);
3029
3030 /* We are only interested in symbols that are currently
3031 undefined or common. */
3032 if (h == (struct bfd_link_hash_entry *) NULL
3033 || (h->type != bfd_link_hash_undefined
3034 && h->type != bfd_link_hash_common))
9b39ed6b
ILT		 3035 {
3036 if (type == (N_INDR | N_EXT))
3037 ++p;
3038 continue;
3039 }
4c3721d5 3040
9b39ed6b
ILT		 3041 if (type == (N_TEXT | N_EXT)
3042 || type == (N_DATA | N_EXT)
3043 || type == (N_BSS | N_EXT)
3044 || type == (N_ABS | N_EXT)
3045 || type == (N_INDR | N_EXT))
4c3721d5
ILT		 3046 {
3047 /* This object file defines this symbol. We must link it
3048 in. This is true regardless of whether the current
3049 definition of the symbol is undefined or common. If the
3050 current definition is common, we have a case in which we
3051 have already seen an object file including
3052 int a;
3053 and this object file from the archive includes
3054 int a = 5;
f88c9008
ILT		 3055 In such a case we must include this object file.
3056
3057 FIXME: The SunOS 4.1.3 linker will pull in the archive
3058 element if the symbol is defined in the .data section,
3059 but not if it is defined in the .text section. That
3060 seems a bit crazy to me, and I haven't implemented it.
3061 However, it might be correct. */
4c3721d5
ILT		 3062 if (! (*info->callbacks->add_archive_element) (info, abfd, name))
3063 return false;
3064 *pneeded = true;
3065 return true;
3066 }
3067
9b39ed6b 3068 if (type == (N_UNDF | N_EXT))
4c3721d5
ILT		 3069 {
3070 bfd_vma value;
3071
3072 value = GET_WORD (abfd, p->e_value);
3073 if (value != 0)
3074 {
3075 /* This symbol is common in the object from the archive
3076 file. */
3077 if (h->type == bfd_link_hash_undefined)
3078 {
3079 bfd *symbfd;
e1f99f60 3080 unsigned int power;
4c3721d5
ILT		 3081
3082 symbfd = h->u.undef.abfd;
3083 if (symbfd == (bfd *) NULL)
3084 {
3085 /* This symbol was created as undefined from
3086 outside BFD. We assume that we should link
3087 in the object file. This is done for the -u
3088 option in the linker. */
3089 if (! (*info->callbacks->add_archive_element) (info,
3090 abfd,
3091 name))
3092 return false;
3093 *pneeded = true;
3094 return true;
3095 }
3096 /* Turn the current link symbol into a common
3097 symbol. It is already on the undefs list. */
3098 h->type = bfd_link_hash_common;
773033d2
ILT		 3099 h->u.c.p = ((struct bfd_link_hash_common_entry *)
3100 bfd_hash_allocate (&info->hash->table,
3101 sizeof (struct bfd_link_hash_common_entry)));
3102 if (h->u.c.p == NULL)
3103 return false;
3104
4c3721d5 3105 h->u.c.size = value;
e1f99f60
ILT		 3106
3107 /* FIXME: This isn't quite right. The maximum
3108 alignment of a common symbol should be set by the
3109 architecture of the output file, not of the input
3110 file. */
3111 power = bfd_log2 (value);
3112 if (power > bfd_get_arch_info (abfd)->section_align_power)
3113 power = bfd_get_arch_info (abfd)->section_align_power;
773033d2 3114 h->u.c.p->alignment_power = power;
e1f99f60 3115
773033d2
ILT		 3116 h->u.c.p->section = bfd_make_section_old_way (symbfd,
3117 "COMMON");
4c3721d5
ILT		 3118 }
3119 else
3120 {
3121 /* Adjust the size of the common symbol if
3122 necessary. */
3123 if (value > h->u.c.size)
3124 h->u.c.size = value;
3125 }
3126 }
3127 }
4298e311
ILT		 3128
3129 if (type == N_WEAKA
3130 || type == N_WEAKT
3131 || type == N_WEAKD
3132 || type == N_WEAKB)
3133 {
3134 /* This symbol is weak but defined. We must pull it in if
3135 the current link symbol is undefined, but we don't want
3136 it if the current link symbol is common. */
3137 if (h->type == bfd_link_hash_undefined)
3138 {
3139 if (! (*info->callbacks->add_archive_element) (info, abfd, name))
3140 return false;
3141 *pneeded = true;
3142 return true;
3143 }
3144 }
4c3721d5
ILT		 3145 }
3146
3147 /* We do not need this object file. */
3148 return true;
3149}
3150
3151/* Add all symbols from an object file to the hash table. */
3152
3153static boolean
3154aout_link_add_symbols (abfd, info)
3155 bfd *abfd;
3156 struct bfd_link_info *info;
3157{
e85e8bfe
ILT		 3158 boolean (*add_one_symbol) PARAMS ((struct bfd_link_info *, bfd *,
3159 const char *, flagword, asection *,
3160 bfd_vma, const char *, boolean,
3161 boolean,
3162 struct bfd_link_hash_entry **));
396aaeb2 3163 struct external_nlist *syms;
4c3721d5
ILT		 3164 bfd_size_type sym_count;
3165 char *strings;
3166 boolean copy;
3167 struct aout_link_hash_entry **sym_hash;
3168 register struct external_nlist *p;
3169 struct external_nlist *pend;
3170
396aaeb2 3171 syms = obj_aout_external_syms (abfd);
4c3721d5
ILT		 3172 sym_count = obj_aout_external_sym_count (abfd);
3173 strings = obj_aout_external_strings (abfd);
3174 if (info->keep_memory)
3175 copy = false;
3176 else
3177 copy = true;
3178
396aaeb2
ILT		 3179 if ((abfd->flags & DYNAMIC) != 0
3180 && aout_backend_info (abfd)->add_dynamic_symbols != NULL)
3181 {
3182 if (! ((*aout_backend_info (abfd)->add_dynamic_symbols)
3183 (abfd, info, &syms, &sym_count, &strings)))
3184 return false;
3185 }
3186
4c3721d5
ILT		 3187 /* We keep a list of the linker hash table entries that correspond
3188 to particular symbols. We could just look them up in the hash
3189 table, but keeping the list is more efficient. Perhaps this
3190 should be conditional on info->keep_memory. */
3191 sym_hash = ((struct aout_link_hash_entry **)
3192 bfd_alloc (abfd,
3193 ((size_t) sym_count
3194 * sizeof (struct aout_link_hash_entry *))));
e85e8bfe 3195 if (sym_hash == NULL && sym_count != 0)
a9713b91 3196 return false;
4c3721d5
ILT		 3197 obj_aout_sym_hashes (abfd) = sym_hash;
3198
e85e8bfe
ILT		 3199 add_one_symbol = aout_backend_info (abfd)->add_one_symbol;
3200 if (add_one_symbol == NULL)
3201 add_one_symbol = _bfd_generic_link_add_one_symbol;
3202
396aaeb2 3203 p = syms;
4c3721d5
ILT		 3204 pend = p + sym_count;
3205 for (; p < pend; p++, sym_hash++)
3206 {
3207 int type;
3208 const char *name;
3209 bfd_vma value;
3210 asection *section;
3211 flagword flags;
3212 const char *string;
3213
3214 *sym_hash = NULL;
3215
3216 type = bfd_h_get_8 (abfd, p->e_type);
3217
3218 /* Ignore debugging symbols. */
3219 if ((type & N_STAB) != 0)
3220 continue;
3221
4c3721d5
ILT		 3222 name = strings + GET_WORD (abfd, p->e_strx);
3223 value = GET_WORD (abfd, p->e_value);
3224 flags = BSF_GLOBAL;
3225 string = NULL;
3226 switch (type)
3227 {
3228 default:
3229 abort ();
4298e311
ILT		 3230
3231 case N_UNDF:
3232 case N_ABS:
3233 case N_TEXT:
3234 case N_DATA:
3235 case N_BSS:
3236 case N_FN_SEQ:
3237 case N_COMM:
3238 case N_SETV:
3239 case N_FN:
3240 /* Ignore symbols that are not externally visible. */
3241 continue;
3242 case N_INDR:
3243 /* Ignore local indirect symbol. */
3244 ++p;
3245 ++sym_hash;
3246 continue;
3247
4c3721d5 3248 case N_UNDF | N_EXT:
4298e311
ILT		 3249 if (value == 0)
3250 {
4587b578 3251 section = bfd_und_section_ptr;
4298e311
ILT		 3252 flags = 0;
3253 }
4c3721d5 3254 else
4587b578 3255 section = bfd_com_section_ptr;
4c3721d5
ILT		 3256 break;
3257 case N_ABS | N_EXT:
4587b578 3258 section = bfd_abs_section_ptr;
4c3721d5
ILT		 3259 break;
3260 case N_TEXT | N_EXT:
3261 section = obj_textsec (abfd);
3262 value -= bfd_get_section_vma (abfd, section);
3263 break;
3264 case N_DATA | N_EXT:
2cd086e3
ILT		 3265 case N_SETV | N_EXT:
3266 /* Treat N_SETV symbols as N_DATA symbol; see comment in
3267 translate_from_native_sym_flags. */
4c3721d5
ILT		 3268 section = obj_datasec (abfd);
3269 value -= bfd_get_section_vma (abfd, section);
3270 break;
3271 case N_BSS | N_EXT:
3272 section = obj_bsssec (abfd);
3273 value -= bfd_get_section_vma (abfd, section);
3274 break;
3275 case N_INDR | N_EXT:
3276 /* An indirect symbol. The next symbol is the symbol
3277 which this one really is. */
3278 BFD_ASSERT (p + 1 < pend);
3279 ++p;
3280 string = strings + GET_WORD (abfd, p->e_strx);
4587b578 3281 section = bfd_ind_section_ptr;
4c3721d5
ILT		 3282 flags |= BSF_INDIRECT;
3283 break;
3284 case N_COMM | N_EXT:
4587b578 3285 section = bfd_com_section_ptr;
4c3721d5 3286 break;
964affdc 3287 case N_SETA: case N_SETA | N_EXT:
4587b578 3288 section = bfd_abs_section_ptr;
4c3721d5
ILT		 3289 flags |= BSF_CONSTRUCTOR;
3290 break;
964affdc 3291 case N_SETT: case N_SETT | N_EXT:
4c3721d5
ILT		 3292 section = obj_textsec (abfd);
3293 flags |= BSF_CONSTRUCTOR;
3294 value -= bfd_get_section_vma (abfd, section);
3295 break;
964affdc 3296 case N_SETD: case N_SETD | N_EXT:
4c3721d5
ILT		 3297 section = obj_datasec (abfd);
3298 flags |= BSF_CONSTRUCTOR;
3299 value -= bfd_get_section_vma (abfd, section);
3300 break;
964affdc 3301 case N_SETB: case N_SETB | N_EXT:
4c3721d5
ILT		 3302 section = obj_bsssec (abfd);
3303 flags |= BSF_CONSTRUCTOR;
3304 value -= bfd_get_section_vma (abfd, section);
3305 break;
3306 case N_WARNING:
3307 /* A warning symbol. The next symbol is the one to warn
3308 about. */
3309 BFD_ASSERT (p + 1 < pend);
3310 ++p;
3311 string = name;
3312 name = strings + GET_WORD (abfd, p->e_strx);
4587b578 3313 section = bfd_und_section_ptr;
4c3721d5
ILT		 3314 flags |= BSF_WARNING;
3315 break;
4298e311 3316 case N_WEAKU:
4587b578 3317 section = bfd_und_section_ptr;
4298e311
ILT		 3318 flags = BSF_WEAK;
3319 break;
3320 case N_WEAKA:
4587b578 3321 section = bfd_abs_section_ptr;
4298e311
ILT		 3322 flags = BSF_WEAK;
3323 break;
3324 case N_WEAKT:
3325 section = obj_textsec (abfd);
3326 value -= bfd_get_section_vma (abfd, section);
3327 flags = BSF_WEAK;
3328 break;
3329 case N_WEAKD:
3330 section = obj_datasec (abfd);
3331 value -= bfd_get_section_vma (abfd, section);
3332 flags = BSF_WEAK;
3333 break;
3334 case N_WEAKB:
3335 section = obj_bsssec (abfd);
3336 value -= bfd_get_section_vma (abfd, section);
3337 flags = BSF_WEAK;
3338 break;
4c3721d5
ILT		 3339 }
3340
e85e8bfe 3341 if (! ((*add_one_symbol)
e68de5d5 3342 (info, abfd, name, flags, section, value, string, copy, false,
ec099b4b 3343 (struct bfd_link_hash_entry **) sym_hash)))
4c3721d5 3344 return false;
53155af1 3345
e1f99f60
ILT		 3346 /* Restrict the maximum alignment of a common symbol based on
3347 the architecture, since a.out has no way to represent
3348 alignment requirements of a section in a .o file. FIXME:
3349 This isn't quite right: it should use the architecture of the
3350 output file, not the input files. */
3351 if ((*sym_hash)->root.type == bfd_link_hash_common
773033d2 3352 && ((*sym_hash)->root.u.c.p->alignment_power >
e1f99f60 3353 bfd_get_arch_info (abfd)->section_align_power))
773033d2 3354 (*sym_hash)->root.u.c.p->alignment_power =
e1f99f60
ILT		 3355 bfd_get_arch_info (abfd)->section_align_power;
3356
f4945271
ILT		 3357 /* If this is a set symbol, and we are not building sets, then
3358 it is possible for the hash entry to not have been set. In
3359 such a case, treat the symbol as not globally defined. */
3360 if ((*sym_hash)->root.type == bfd_link_hash_new)
3361 {
3362 BFD_ASSERT ((flags & BSF_CONSTRUCTOR) != 0);
3363 *sym_hash = NULL;
3364 }
3365
53155af1
ILT		 3366 if (type == (N_INDR | N_EXT) || type == N_WARNING)
3367 ++sym_hash;
4c3721d5
ILT		 3368 }
3369
3370 return true;
3371}
3372
3373/* During the final link step we need to pass around a bunch of
3374 information, so we do it in an instance of this structure. */
3375
3376struct aout_final_link_info
3377{
3378 /* General link information. */
3379 struct bfd_link_info *info;
3380 /* Output bfd. */
3381 bfd *output_bfd;
3382 /* Reloc file positions. */
3383 file_ptr treloff, dreloff;
3384 /* File position of symbols. */
3385 file_ptr symoff;
3386 /* String table. */
1afd2380
ILT		 3387 struct bfd_strtab_hash *strtab;
3388 /* A buffer large enough to hold the contents of any section. */
3389 bfd_byte *contents;
3390 /* A buffer large enough to hold the relocs of any section. */
3391 PTR relocs;
3392 /* A buffer large enough to hold the symbol map of any input BFD. */
3393 int *symbol_map;
3394 /* A buffer large enough to hold output symbols of any input BFD. */
3395 struct external_nlist *output_syms;
4c3721d5
ILT		 3396};
3397
3398static boolean aout_link_input_bfd
3399 PARAMS ((struct aout_final_link_info *, bfd *input_bfd));
3400static boolean aout_link_write_symbols
1afd2380 3401 PARAMS ((struct aout_final_link_info *, bfd *input_bfd));
4c3721d5
ILT		 3402static boolean aout_link_write_other_symbol
3403 PARAMS ((struct aout_link_hash_entry *, PTR));
3404static boolean aout_link_input_section
3405 PARAMS ((struct aout_final_link_info *, bfd *input_bfd,
3406 asection *input_section, file_ptr *reloff_ptr,
1afd2380 3407 bfd_size_type rel_size));
4c3721d5
ILT		 3408static boolean aout_link_input_section_std
3409 PARAMS ((struct aout_final_link_info *, bfd *input_bfd,
3410 asection *input_section, struct reloc_std_external *,
1afd2380 3411 bfd_size_type rel_size, bfd_byte *contents));
4c3721d5
ILT		 3412static boolean aout_link_input_section_ext
3413 PARAMS ((struct aout_final_link_info *, bfd *input_bfd,
3414 asection *input_section, struct reloc_ext_external *,
1afd2380 3415 bfd_size_type rel_size, bfd_byte *contents));
4c3721d5
ILT		 3416static INLINE asection *aout_reloc_index_to_section
3417 PARAMS ((bfd *, int));
ec099b4b
ILT		 3418static boolean aout_link_reloc_link_order
3419 PARAMS ((struct aout_final_link_info *, asection *,
3420 struct bfd_link_order *));
4c3721d5
ILT		 3421
3422/* Do the final link step. This is called on the output BFD. The
3423 INFO structure should point to a list of BFDs linked through the
3424 link_next field which can be used to find each BFD which takes part
3425 in the output. Also, each section in ABFD should point to a list
3426 of bfd_link_order structures which list all the input sections for
3427 the output section. */
3428
3429boolean
3430NAME(aout,final_link) (abfd, info, callback)
3431 bfd *abfd;
3432 struct bfd_link_info *info;
3433 void (*callback) PARAMS ((bfd *, file_ptr *, file_ptr *, file_ptr *));
3434{
3435 struct aout_final_link_info aout_info;
3436 register bfd *sub;
1afd2380
ILT		 3437 bfd_size_type trsize, drsize;
3438 size_t max_contents_size;
3439 size_t max_relocs_size;
3440 size_t max_sym_count;
4c3721d5
ILT		 3441 bfd_size_type text_size;
3442 file_ptr text_end;
3443 register struct bfd_link_order *p;
3444 asection *o;
ec099b4b 3445 boolean have_link_order_relocs;
4c3721d5 3446
ae115e51
ILT		 3447 if (info->shared)
3448 abfd->flags |= DYNAMIC;
3449
4c3721d5
ILT		 3450 aout_info.info = info;
3451 aout_info.output_bfd = abfd;
1afd2380
ILT		 3452 aout_info.contents = NULL;
3453 aout_info.relocs = NULL;
3454
3455 /* Figure out the largest section size. Also, if generating
3456 relocateable output, count the relocs. */
3457 trsize = 0;
3458 drsize = 0;
3459 max_contents_size = 0;
3460 max_relocs_size = 0;
3461 max_sym_count = 0;
3462 for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
4c3721d5 3463 {
1afd2380 3464 size_t sz;
4c3721d5 3465
1afd2380 3466 if (info->relocateable)
4c3721d5 3467 {
6c8fa8e6 3468 if (bfd_get_flavour (sub) == bfd_target_aout_flavour)
4c3721d5
ILT		 3469 {
3470 trsize += exec_hdr (sub)->a_trsize;
3471 drsize += exec_hdr (sub)->a_drsize;
3472 }
3473 else
3474 {
3475 /* FIXME: We need to identify the .text and .data sections
3476 and call get_reloc_upper_bound and canonicalize_reloc to
3477 work out the number of relocs needed, and then multiply
3478 by the reloc size. */
a9713b91
ILT		 3479 (*_bfd_error_handler)
3480 ("%s: relocateable link from %s to %s not supported",
3481 bfd_get_filename (abfd),
3482 sub->xvec->name, abfd->xvec->name);
3483 bfd_set_error (bfd_error_invalid_operation);
3484 goto error_return;
4c3721d5
ILT		 3485 }
3486 }
1afd2380 3487
204ba9e3
ILT		 3488 if (bfd_get_flavour (sub) == bfd_target_aout_flavour)
3489 {
3490 sz = bfd_section_size (sub, obj_textsec (sub));
3491 if (sz > max_contents_size)
3492 max_contents_size = sz;
3493 sz = bfd_section_size (sub, obj_datasec (sub));
3494 if (sz > max_contents_size)
3495 max_contents_size = sz;
3496
3497 sz = exec_hdr (sub)->a_trsize;
3498 if (sz > max_relocs_size)
3499 max_relocs_size = sz;
3500 sz = exec_hdr (sub)->a_drsize;
3501 if (sz > max_relocs_size)
3502 max_relocs_size = sz;
3503
3504 sz = obj_aout_external_sym_count (sub);
3505 if (sz > max_sym_count)
3506 max_sym_count = sz;
3507 }
1afd2380
ILT		 3508 }
3509
3510 if (info->relocateable)
3511 {
ec6b18c4
ILT		 3512 if (obj_textsec (abfd) != (asection *) NULL)
3513 trsize += (_bfd_count_link_order_relocs (obj_textsec (abfd)
3514 ->link_order_head)
3515 * obj_reloc_entry_size (abfd));
ec6b18c4
ILT		 3516 if (obj_datasec (abfd) != (asection *) NULL)
3517 drsize += (_bfd_count_link_order_relocs (obj_datasec (abfd)
3518 ->link_order_head)
3519 * obj_reloc_entry_size (abfd));
4c3721d5
ILT		 3520 }
3521
1afd2380
ILT		 3522 exec_hdr (abfd)->a_trsize = trsize;
3523 exec_hdr (abfd)->a_drsize = drsize;
3524
964affdc
DM		 3525 exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd);
3526
4c3721d5
ILT		 3527 /* Adjust the section sizes and vmas according to the magic number.
3528 This sets a_text, a_data and a_bss in the exec_hdr and sets the
3529 filepos for each section. */
3530 if (! NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end))
1afd2380 3531 goto error_return;
4c3721d5
ILT		 3532
3533 /* The relocation and symbol file positions differ among a.out
3534 targets. We are passed a callback routine from the backend
3535 specific code to handle this.
3536 FIXME: At this point we do not know how much space the symbol
3537 table will require. This will not work for any (nonstandard)
3538 a.out target that needs to know the symbol table size before it
3539 can compute the relocation file positions. This may or may not
3540 be the case for the hp300hpux target, for example. */
3541 (*callback) (abfd, &aout_info.treloff, &aout_info.dreloff,
3542 &aout_info.symoff);
3543 obj_textsec (abfd)->rel_filepos = aout_info.treloff;
3544 obj_datasec (abfd)->rel_filepos = aout_info.dreloff;
3545 obj_sym_filepos (abfd) = aout_info.symoff;
3546
3547 /* We keep a count of the symbols as we output them. */
3548 obj_aout_external_sym_count (abfd) = 0;
3549
3550 /* We accumulate the string table as we write out the symbols. */
1afd2380
ILT		 3551 aout_info.strtab = _bfd_stringtab_init ();
3552 if (aout_info.strtab == NULL)
3553 goto error_return;
3554
3555 /* Allocate buffers to hold section contents and relocs. */
58142f10
ILT		 3556 aout_info.contents = (bfd_byte *) bfd_malloc (max_contents_size);
3557 aout_info.relocs = (PTR) bfd_malloc (max_relocs_size);
3558 aout_info.symbol_map = (int *) bfd_malloc (max_sym_count * sizeof (int *));
1afd2380 3559 aout_info.output_syms = ((struct external_nlist *)
58142f10
ILT		 3560 bfd_malloc ((max_sym_count + 1)
3561 * sizeof (struct external_nlist)));
1afd2380
ILT		 3562 if ((aout_info.contents == NULL && max_contents_size != 0)
3563 || (aout_info.relocs == NULL && max_relocs_size != 0)
3564 || (aout_info.symbol_map == NULL && max_sym_count != 0)
3565 || aout_info.output_syms == NULL)
58142f10 3566 goto error_return;
4c3721d5 3567
34e9ffbc
NH		 3568 /* If we have a symbol named __DYNAMIC, force it out now. This is
3569 required by SunOS. Doing this here rather than in sunos.c is a
3570 hack, but it's easier than exporting everything which would be
3571 needed. */
3572 {
3573 struct aout_link_hash_entry *h;
3574
3575 h = aout_link_hash_lookup (aout_hash_table (info), "__DYNAMIC",
3576 false, false, false);
3577 if (h != NULL)
3578 aout_link_write_other_symbol (h, &aout_info);
3579 }
3580
4c3721d5
ILT		 3581 /* The most time efficient way to do the link would be to read all
3582 the input object files into memory and then sort out the
3583 information into the output file. Unfortunately, that will
3584 probably use too much memory. Another method would be to step
3585 through everything that composes the text section and write it
3586 out, and then everything that composes the data section and write
3587 it out, and then write out the relocs, and then write out the
3588 symbols. Unfortunately, that requires reading stuff from each
3589 input file several times, and we will not be able to keep all the
3590 input files open simultaneously, and reopening them will be slow.
3591
3592 What we do is basically process one input file at a time. We do
3593 everything we need to do with an input file once--copy over the
3594 section contents, handle the relocation information, and write
3595 out the symbols--and then we throw away the information we read
3596 from it. This approach requires a lot of lseeks of the output
3597 file, which is unfortunate but still faster than reopening a lot
3598 of files.
3599
3600 We use the output_has_begun field of the input BFDs to see
3601 whether we have already handled it. */
3602 for (sub = info->input_bfds; sub != (bfd *) NULL; sub = sub->link_next)
3603 sub->output_has_begun = false;
3604
ec099b4b 3605 have_link_order_relocs = false;
4c3721d5
ILT		 3606 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
3607 {
4c3721d5
ILT		 3608 for (p = o->link_order_head;
3609 p != (struct bfd_link_order *) NULL;
3610 p = p->next)
3611 {
e68de5d5
ILT		 3612 if (p->type == bfd_indirect_link_order
3613 && (bfd_get_flavour (p->u.indirect.section->owner)
3614 == bfd_target_aout_flavour))
4c3721d5 3615 {
e68de5d5
ILT		 3616 bfd *input_bfd;
3617
4c3721d5 3618 input_bfd = p->u.indirect.section->owner;
e68de5d5 3619 if (! input_bfd->output_has_begun)
4c3721d5 3620 {
e68de5d5 3621 if (! aout_link_input_bfd (&aout_info, input_bfd))
1afd2380 3622 goto error_return;
e68de5d5 3623 input_bfd->output_has_begun = true;
4c3721d5 3624 }
e68de5d5 3625 }
ec099b4b
ILT		 3626 else if (p->type == bfd_section_reloc_link_order
3627 || p->type == bfd_symbol_reloc_link_order)
3628 {
3629 /* These are handled below. */
3630 have_link_order_relocs = true;
3631 }
e68de5d5
ILT		 3632 else
3633 {
4c3721d5 3634 if (! _bfd_default_link_order (abfd, info, o, p))
1afd2380 3635 goto error_return;
4c3721d5
ILT		 3636 }
3637 }
3638 }
3639
3640 /* Write out any symbols that we have not already written out. */
3641 aout_link_hash_traverse (aout_hash_table (info),
3642 aout_link_write_other_symbol,
3643 (PTR) &aout_info);
3644
ec099b4b
ILT		 3645 /* Now handle any relocs we were asked to create by the linker.
3646 These did not come from any input file. We must do these after
3647 we have written out all the symbols, so that we know the symbol
3648 indices to use. */
3649 if (have_link_order_relocs)
3650 {
3651 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
3652 {
3653 for (p = o->link_order_head;
3654 p != (struct bfd_link_order *) NULL;
3655 p = p->next)
3656 {
3657 if (p->type == bfd_section_reloc_link_order
3658 || p->type == bfd_symbol_reloc_link_order)
3659 {
3660 if (! aout_link_reloc_link_order (&aout_info, o, p))
1afd2380 3661 goto error_return;
ec099b4b
ILT		 3662 }
3663 }
3664 }
3665 }
3666
1afd2380
ILT		 3667 if (aout_info.contents != NULL)
3668 {
3669 free (aout_info.contents);
3670 aout_info.contents = NULL;
3671 }
3672 if (aout_info.relocs != NULL)
3673 {
3674 free (aout_info.relocs);
3675 aout_info.relocs = NULL;
3676 }
3677 if (aout_info.symbol_map != NULL)
3678 {
3679 free (aout_info.symbol_map);
3680 aout_info.symbol_map = NULL;
3681 }
3682 if (aout_info.output_syms != NULL)
3683 {
3684 free (aout_info.output_syms);
3685 aout_info.output_syms = NULL;
3686 }
3687
e85e8bfe
ILT		 3688 /* Finish up any dynamic linking we may be doing. */
3689 if (aout_backend_info (abfd)->finish_dynamic_link != NULL)
3690 {
3691 if (! (*aout_backend_info (abfd)->finish_dynamic_link) (abfd, info))
1afd2380 3692 goto error_return;
e85e8bfe
ILT		 3693 }
3694
4c3721d5
ILT		 3695 /* Update the header information. */
3696 abfd->symcount = obj_aout_external_sym_count (abfd);
3697 exec_hdr (abfd)->a_syms = abfd->symcount * EXTERNAL_NLIST_SIZE;
3698 obj_str_filepos (abfd) = obj_sym_filepos (abfd) + exec_hdr (abfd)->a_syms;
3699 obj_textsec (abfd)->reloc_count =
3700 exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd);
3701 obj_datasec (abfd)->reloc_count =
3702 exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd);
3703
3704 /* Write out the string table. */
3705 if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0)
1afd2380
ILT		 3706 goto error_return;
3707 return emit_stringtab (abfd, aout_info.strtab);
3708
3709 error_return:
3710 if (aout_info.contents != NULL)
3711 free (aout_info.contents);
3712 if (aout_info.relocs != NULL)
3713 free (aout_info.relocs);
3714 if (aout_info.symbol_map != NULL)
3715 free (aout_info.symbol_map);
3716 if (aout_info.output_syms != NULL)
3717 free (aout_info.output_syms);
3718 return false;
4c3721d5
ILT		 3719}
3720
3721/* Link an a.out input BFD into the output file. */
3722
3723static boolean
3724aout_link_input_bfd (finfo, input_bfd)
3725 struct aout_final_link_info *finfo;
3726 bfd *input_bfd;
3727{
3728 bfd_size_type sym_count;
4c3721d5
ILT		 3729
3730 BFD_ASSERT (bfd_get_format (input_bfd) == bfd_object);
3731
e85e8bfe
ILT		 3732 /* If this is a dynamic object, it may need special handling. */
3733 if ((input_bfd->flags & DYNAMIC) != 0
3734 && aout_backend_info (input_bfd)->link_dynamic_object != NULL)
3735 {
3736 return ((*aout_backend_info (input_bfd)->link_dynamic_object)
3737 (finfo->info, input_bfd));
3738 }
3739
4c3721d5
ILT		 3740 /* Get the symbols. We probably have them already, unless
3741 finfo->info->keep_memory is false. */
5c8444f8 3742 if (! aout_get_external_symbols (input_bfd))
4c3721d5
ILT		 3743 return false;
3744
3745 sym_count = obj_aout_external_sym_count (input_bfd);
4c3721d5 3746
1afd2380
ILT		 3747 /* Write out the symbols and get a map of the new indices. The map
3748 is placed into finfo->symbol_map. */
3749 if (! aout_link_write_symbols (finfo, input_bfd))
3750 return false;
4c3721d5 3751
1afd2380
ILT		 3752 /* Relocate and write out the sections. These functions use the
3753 symbol map created by aout_link_write_symbols. */
4c3721d5
ILT		 3754 if (! aout_link_input_section (finfo, input_bfd,
3755 obj_textsec (input_bfd),
3756 &finfo->treloff,
1afd2380 3757 exec_hdr (input_bfd)->a_trsize)
4c3721d5
ILT		 3758 || ! aout_link_input_section (finfo, input_bfd,
3759 obj_datasec (input_bfd),
3760 &finfo->dreloff,
1afd2380
ILT		 3761 exec_hdr (input_bfd)->a_drsize))
3762 return false;
4c3721d5
ILT		 3763
3764 /* If we are not keeping memory, we don't need the symbols any
3765 longer. We still need them if we are keeping memory, because the
3766 strings in the hash table point into them. */
3767 if (! finfo->info->keep_memory)
3768 {
3769 if (! aout_link_free_symbols (input_bfd))
1afd2380 3770 return false;
4c3721d5
ILT		 3771 }
3772
3773 return true;
3774}
3775
3776/* Adjust and write out the symbols for an a.out file. Set the new
3777 symbol indices into a symbol_map. */
3778
3779static boolean
1afd2380 3780aout_link_write_symbols (finfo, input_bfd)
4c3721d5
ILT		 3781 struct aout_final_link_info *finfo;
3782 bfd *input_bfd;
4c3721d5
ILT		 3783{
3784 bfd *output_bfd;
3785 bfd_size_type sym_count;
3786 char *strings;
3787 enum bfd_link_strip strip;
3788 enum bfd_link_discard discard;
4c3721d5 3789 struct external_nlist *outsym;
d17fc4c9 3790 bfd_size_type strtab_index;
4c3721d5
ILT		 3791 register struct external_nlist *sym;
3792 struct external_nlist *sym_end;
3793 struct aout_link_hash_entry **sym_hash;
1afd2380 3794 int *symbol_map;
4c3721d5 3795 boolean pass;
ab0434c2 3796 boolean skip_next;
4c3721d5
ILT		 3797
3798 output_bfd = finfo->output_bfd;
3799 sym_count = obj_aout_external_sym_count (input_bfd);
3800 strings = obj_aout_external_strings (input_bfd);
3801 strip = finfo->info->strip;
3802 discard = finfo->info->discard;
1afd2380 3803 outsym = finfo->output_syms;
4c3721d5
ILT		 3804
3805 /* First write out a symbol for this object file, unless we are
3806 discarding such symbols. */
3807 if (strip != strip_all
3808 && (strip != strip_some
3809 || bfd_hash_lookup (finfo->info->keep_hash, input_bfd->filename,
3810 false, false) != NULL)
3811 && discard != discard_all)
3812 {
3813 bfd_h_put_8 (output_bfd, N_TEXT, outsym->e_type);
3814 bfd_h_put_8 (output_bfd, 0, outsym->e_other);
3815 bfd_h_put_16 (output_bfd, (bfd_vma) 0, outsym->e_desc);
1afd2380 3816 strtab_index = add_to_stringtab (output_bfd, finfo->strtab,
d17fc4c9
ILT		 3817 input_bfd->filename, false);
3818 if (strtab_index == (bfd_size_type) -1)
1afd2380 3819 return false;
d17fc4c9 3820 PUT_WORD (output_bfd, strtab_index, outsym->e_strx);
4c3721d5 3821 PUT_WORD (output_bfd,
2edc8357
ILT		 3822 (bfd_get_section_vma (output_bfd,
3823 obj_textsec (input_bfd)->output_section)
3824 + obj_textsec (input_bfd)->output_offset),
4c3721d5
ILT		 3825 outsym->e_value);
3826 ++obj_aout_external_sym_count (output_bfd);
3827 ++outsym;
3828 }
3829
3830 pass = false;
ab0434c2 3831 skip_next = false;
4c3721d5
ILT		 3832 sym = obj_aout_external_syms (input_bfd);
3833 sym_end = sym + sym_count;
3834 sym_hash = obj_aout_sym_hashes (input_bfd);
1afd2380 3835 symbol_map = finfo->symbol_map;
4c3721d5
ILT		 3836 for (; sym < sym_end; sym++, sym_hash++, symbol_map++)
3837 {
3838 const char *name;
3839 int type;
d6d6b18a 3840 struct aout_link_hash_entry *h;
4c3721d5
ILT		 3841 boolean skip;
3842 asection *symsec;
3843 bfd_vma val = 0;
d17fc4c9 3844 boolean copy;
4c3721d5
ILT		 3845
3846 *symbol_map = -1;
3847
3848 type = bfd_h_get_8 (input_bfd, sym->e_type);
3849 name = strings + GET_WORD (input_bfd, sym->e_strx);
3850
d6d6b18a
ILT		 3851 h = NULL;
3852
4c3721d5
ILT		 3853 if (pass)
3854 {
53155af1
ILT		 3855 /* Pass this symbol through. It is the target of an
3856 indirect or warning symbol. */
4c3721d5
ILT		 3857 val = GET_WORD (input_bfd, sym->e_value);
3858 pass = false;
3859 }
ab0434c2 3860 else if (skip_next)
53155af1
ILT		 3861 {
3862 /* Skip this symbol, which is the target of an indirect
3863 symbol that we have changed to no longer be an indirect
3864 symbol. */
ab0434c2 3865 skip_next = false;
53155af1
ILT		 3866 continue;
3867 }
4c3721d5
ILT		 3868 else
3869 {
53155af1 3870 struct aout_link_hash_entry *hresolve;
4c3721d5
ILT		 3871
3872 /* We have saved the hash table entry for this symbol, if
3873 there is one. Note that we could just look it up again
3874 in the hash table, provided we first check that it is an
3875 external symbol. */
3876 h = *sym_hash;
3877
3a5b50f4
ILT		 3878 /* If this is an indirect or warning symbol, then change
3879 hresolve to the base symbol. We also change *sym_hash so
3880 that the relocation routines relocate against the real
3881 symbol. */
53155af1
ILT		 3882 hresolve = h;
3883 if (h != (struct aout_link_hash_entry *) NULL
3a5b50f4
ILT		 3884 && (h->root.type == bfd_link_hash_indirect
3885 || h->root.type == bfd_link_hash_warning))
53155af1
ILT		 3886 {
3887 hresolve = (struct aout_link_hash_entry *) h->root.u.i.link;
118e8d1c
ILT		 3888 while (hresolve->root.type == bfd_link_hash_indirect
3889 || hresolve->root.type == bfd_link_hash_warning)
53155af1
ILT		 3890 hresolve = ((struct aout_link_hash_entry *)
3891 hresolve->root.u.i.link);
3892 *sym_hash = hresolve;
3893 }
3894
4c3721d5
ILT		 3895 /* If the symbol has already been written out, skip it. */
3896 if (h != (struct aout_link_hash_entry *) NULL
e85e8bfe 3897 && h->root.type != bfd_link_hash_warning
35fee729 3898 && h->written)
4c3721d5 3899 {
ab0434c2
ILT		 3900 if ((type & N_TYPE) == N_INDR
3901 || type == N_WARNING)
3902 skip_next = true;
4c3721d5
ILT		 3903 *symbol_map = h->indx;
3904 continue;
3905 }
3906
3907 /* See if we are stripping this symbol. */
3908 skip = false;
3909 switch (strip)
3910 {
3911 case strip_none:
3912 break;
3913 case strip_debugger:
3914 if ((type & N_STAB) != 0)
3915 skip = true;
3916 break;
3917 case strip_some:
3918 if (bfd_hash_lookup (finfo->info->keep_hash, name, false, false)
3919 == NULL)
3920 skip = true;
3921 break;
3922 case strip_all:
3923 skip = true;
3924 break;
3925 }
3926 if (skip)
3927 {
3928 if (h != (struct aout_link_hash_entry *) NULL)
35fee729 3929 h->written = true;
4c3721d5
ILT		 3930 continue;
3931 }
3932
3933 /* Get the value of the symbol. */
4298e311
ILT		 3934 if ((type & N_TYPE) == N_TEXT
3935 || type == N_WEAKT)
4c3721d5 3936 symsec = obj_textsec (input_bfd);
4298e311
ILT		 3937 else if ((type & N_TYPE) == N_DATA
3938 || type == N_WEAKD)
4c3721d5 3939 symsec = obj_datasec (input_bfd);
4298e311
ILT		 3940 else if ((type & N_TYPE) == N_BSS
3941 || type == N_WEAKB)
4c3721d5 3942 symsec = obj_bsssec (input_bfd);
4298e311
ILT		 3943 else if ((type & N_TYPE) == N_ABS
3944 || type == N_WEAKA)
4587b578 3945 symsec = bfd_abs_section_ptr;
53155af1
ILT		 3946 else if (((type & N_TYPE) == N_INDR
3947 && (hresolve == (struct aout_link_hash_entry *) NULL
3948 || (hresolve->root.type != bfd_link_hash_defined
6c97aedf 3949 && hresolve->root.type != bfd_link_hash_defweak
53155af1 3950 && hresolve->root.type != bfd_link_hash_common)))
4c3721d5
ILT		 3951 || type == N_WARNING)
3952 {
53155af1
ILT		 3953 /* Pass the next symbol through unchanged. The
3954 condition above for indirect symbols is so that if
3955 the indirect symbol was defined, we output it with
3956 the correct definition so the debugger will
3957 understand it. */
4c3721d5
ILT		 3958 pass = true;
3959 val = GET_WORD (input_bfd, sym->e_value);
3960 symsec = NULL;
3961 }
3962 else if ((type & N_STAB) != 0)
3963 {
3964 val = GET_WORD (input_bfd, sym->e_value);
3965 symsec = NULL;
3966 }
3967 else
3968 {
53155af1
ILT		 3969 /* If we get here with an indirect symbol, it means that
3970 we are outputting it with a real definition. In such
3971 a case we do not want to output the next symbol,
3972 which is the target of the indirection. */
3973 if ((type & N_TYPE) == N_INDR)
ab0434c2 3974 skip_next = true;
53155af1 3975
f4945271
ILT		 3976 symsec = NULL;
3977
53155af1
ILT		 3978 /* We need to get the value from the hash table. We use
3979 hresolve so that if we have defined an indirect
3980 symbol we output the final definition. */
4c3721d5 3981 if (h == (struct aout_link_hash_entry *) NULL)
f4945271
ILT		 3982 {
3983 switch (type & N_TYPE)
3984 {
3985 case N_SETT:
3986 symsec = obj_textsec (input_bfd);
3987 break;
3988 case N_SETD:
3989 symsec = obj_datasec (input_bfd);
3990 break;
3991 case N_SETB:
3992 symsec = obj_bsssec (input_bfd);
3993 break;
3994 case N_SETA:
3995 symsec = bfd_abs_section_ptr;
3996 break;
3997 default:
3998 val = 0;
3999 break;
4000 }
4001 }
6c97aedf
ILT		 4002 else if (hresolve->root.type == bfd_link_hash_defined
4003 || hresolve->root.type == bfd_link_hash_defweak)
4c3721d5 4004 {
53155af1 4005 asection *input_section;
4c3721d5
ILT		 4006 asection *output_section;
4007
6c97aedf
ILT		 4008 /* This case usually means a common symbol which was
4009 turned into a defined symbol. */
53155af1
ILT		 4010 input_section = hresolve->root.u.def.section;
4011 output_section = input_section->output_section;
4587b578 4012 BFD_ASSERT (bfd_is_abs_section (output_section)
4c3721d5 4013 || output_section->owner == output_bfd);
53155af1 4014 val = (hresolve->root.u.def.value
4c3721d5 4015 + bfd_get_section_vma (output_bfd, output_section)
53155af1 4016 + input_section->output_offset);
4c3721d5
ILT		 4017
4018 /* Get the correct type based on the section. If
4019 this is a constructed set, force it to be
4020 globally visible. */
4021 if (type == N_SETT
4022 || type == N_SETD
4023 || type == N_SETB
4024 || type == N_SETA)
4025 type |= N_EXT;
4026
4027 type &=~ N_TYPE;
4028
4029 if (output_section == obj_textsec (output_bfd))
6c97aedf
ILT		 4030 type |= (hresolve->root.type == bfd_link_hash_defined
4031 ? N_TEXT
4032 : N_WEAKT);
4c3721d5 4033 else if (output_section == obj_datasec (output_bfd))
6c97aedf
ILT		 4034 type |= (hresolve->root.type == bfd_link_hash_defined
4035 ? N_DATA
4036 : N_WEAKD);
4c3721d5 4037 else if (output_section == obj_bsssec (output_bfd))
6c97aedf
ILT		 4038 type |= (hresolve->root.type == bfd_link_hash_defined
4039 ? N_BSS
4040 : N_WEAKB);
4c3721d5 4041 else
6c97aedf
ILT		 4042 type |= (hresolve->root.type == bfd_link_hash_defined
4043 ? N_ABS
4044 : N_WEAKA);
4c3721d5 4045 }
53155af1
ILT		 4046 else if (hresolve->root.type == bfd_link_hash_common)
4047 val = hresolve->root.u.c.size;
6c97aedf 4048 else if (hresolve->root.type == bfd_link_hash_undefweak)
4298e311
ILT		 4049 {
4050 val = 0;
4051 type = N_WEAKU;
4052 }
4c3721d5
ILT		 4053 else
4054 val = 0;
4c3721d5
ILT		 4055 }
4056 if (symsec != (asection *) NULL)
4057 val = (symsec->output_section->vma
4058 + symsec->output_offset
4059 + (GET_WORD (input_bfd, sym->e_value)
4060 - symsec->vma));
4061
4062 /* If this is a global symbol set the written flag, and if
4063 it is a local symbol see if we should discard it. */
4064 if (h != (struct aout_link_hash_entry *) NULL)
4065 {
35fee729 4066 h->written = true;
4c3721d5
ILT		 4067 h->indx = obj_aout_external_sym_count (output_bfd);
4068 }
f4945271
ILT		 4069 else if ((type & N_TYPE) != N_SETT
4070 && (type & N_TYPE) != N_SETD
4071 && (type & N_TYPE) != N_SETB
4072 && (type & N_TYPE) != N_SETA)
4c3721d5
ILT		 4073 {
4074 switch (discard)
4075 {
4076 case discard_none:
4077 break;
4078 case discard_l:
4079 if (*name == *finfo->info->lprefix
4080 && (finfo->info->lprefix_len == 1
4081 || strncmp (name, finfo->info->lprefix,
4082 finfo->info->lprefix_len) == 0))
4083 skip = true;
4084 break;
4085 case discard_all:
4086 skip = true;
4087 break;
4088 }
4089 if (skip)
4090 {
4091 pass = false;
4092 continue;
4093 }
4094 }
4095 }
4096
4097 /* Copy this symbol into the list of symbols we are going to
4098 write out. */
4099 bfd_h_put_8 (output_bfd, type, outsym->e_type);
4100 bfd_h_put_8 (output_bfd, bfd_h_get_8 (input_bfd, sym->e_other),
4101 outsym->e_other);
4102 bfd_h_put_16 (output_bfd, bfd_h_get_16 (input_bfd, sym->e_desc),
4103 outsym->e_desc);
d17fc4c9 4104 copy = false;
d6d6b18a
ILT		 4105 if (! finfo->info->keep_memory)
4106 {
4107 /* name points into a string table which we are going to
4108 free. If there is a hash table entry, use that string.
4109 Otherwise, copy name into memory. */
4110 if (h != (struct aout_link_hash_entry *) NULL)
1afd2380 4111 name = h->root.root.string;
d6d6b18a 4112 else
d17fc4c9 4113 copy = true;
d6d6b18a 4114 }
1afd2380 4115 strtab_index = add_to_stringtab (output_bfd, finfo->strtab,
d17fc4c9
ILT		 4116 name, copy);
4117 if (strtab_index == (bfd_size_type) -1)
1afd2380 4118 return false;
d17fc4c9 4119 PUT_WORD (output_bfd, strtab_index, outsym->e_strx);
4c3721d5
ILT		 4120 PUT_WORD (output_bfd, val, outsym->e_value);
4121 *symbol_map = obj_aout_external_sym_count (output_bfd);
4122 ++obj_aout_external_sym_count (output_bfd);
4123 ++outsym;
4124 }
4125
4126 /* Write out the output symbols we have just constructed. */
1afd2380 4127 if (outsym > finfo->output_syms)
4c3721d5
ILT		 4128 {
4129 bfd_size_type outsym_count;
4130
4131 if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0)
1afd2380
ILT		 4132 return false;
4133 outsym_count = outsym - finfo->output_syms;
4134 if (bfd_write ((PTR) finfo->output_syms,
4135 (bfd_size_type) EXTERNAL_NLIST_SIZE,
4c3721d5
ILT		 4136 (bfd_size_type) outsym_count, output_bfd)
4137 != outsym_count * EXTERNAL_NLIST_SIZE)
1afd2380 4138 return false;
4c3721d5
ILT		 4139 finfo->symoff += outsym_count * EXTERNAL_NLIST_SIZE;
4140 }
4141
4142 return true;
4143}
4144
4145/* Write out a symbol that was not associated with an a.out input
4146 object. */
4147
4148static boolean
4149aout_link_write_other_symbol (h, data)
4150 struct aout_link_hash_entry *h;
4151 PTR data;
4152{
4153 struct aout_final_link_info *finfo = (struct aout_final_link_info *) data;
4154 bfd *output_bfd;
4155 int type;
4156 bfd_vma val;
4157 struct external_nlist outsym;
d17fc4c9 4158 bfd_size_type indx;
4c3721d5 4159
e85e8bfe
ILT		 4160 output_bfd = finfo->output_bfd;
4161
4162 if (aout_backend_info (output_bfd)->write_dynamic_symbol != NULL)
4163 {
4164 if (! ((*aout_backend_info (output_bfd)->write_dynamic_symbol)
4165 (output_bfd, finfo->info, h)))
4166 {
4167 /* FIXME: No way to handle errors. */
4168 abort ();
4169 }
4170 }
4171
35fee729 4172 if (h->written)
4c3721d5
ILT		 4173 return true;
4174
35fee729 4175 h->written = true;
9783e04a 4176
74942465
ILT		 4177 /* An indx of -2 means the symbol must be written. */
4178 if (h->indx != -2
4179 && (finfo->info->strip == strip_all
4180 || (finfo->info->strip == strip_some
4181 && bfd_hash_lookup (finfo->info->keep_hash, h->root.root.string,
4182 false, false) == NULL)))
9783e04a
DM		 4183 return true;
4184
4c3721d5
ILT		 4185 switch (h->root.type)
4186 {
4187 default:
4c3721d5
ILT		 4188 abort ();
4189 /* Avoid variable not initialized warnings. */
4190 return true;
f4945271
ILT		 4191 case bfd_link_hash_new:
4192 /* This can happen for set symbols when sets are not being
4193 built. */
4194 return true;
4c3721d5
ILT		 4195 case bfd_link_hash_undefined:
4196 type = N_UNDF | N_EXT;
4197 val = 0;
4198 break;
4199 case bfd_link_hash_defined:
6c97aedf 4200 case bfd_link_hash_defweak:
4c3721d5
ILT		 4201 {
4202 asection *sec;
4203
4f019d04 4204 sec = h->root.u.def.section->output_section;
4587b578 4205 BFD_ASSERT (bfd_is_abs_section (sec)
4c3721d5
ILT		 4206 || sec->owner == output_bfd);
4207 if (sec == obj_textsec (output_bfd))
6c97aedf 4208 type = h->root.type == bfd_link_hash_defined ? N_TEXT : N_WEAKT;
4c3721d5 4209 else if (sec == obj_datasec (output_bfd))
6c97aedf 4210 type = h->root.type == bfd_link_hash_defined ? N_DATA : N_WEAKD;
4c3721d5 4211 else if (sec == obj_bsssec (output_bfd))
6c97aedf 4212 type = h->root.type == bfd_link_hash_defined ? N_BSS : N_WEAKB;
4c3721d5 4213 else
6c97aedf
ILT		 4214 type = h->root.type == bfd_link_hash_defined ? N_ABS : N_WEAKA;
4215 type |= N_EXT;
4c3721d5 4216 val = (h->root.u.def.value
4f019d04
ILT		 4217 + sec->vma
4218 + h->root.u.def.section->output_offset);
4c3721d5
ILT		 4219 }
4220 break;
4221 case bfd_link_hash_common:
4222 type = N_UNDF | N_EXT;
4223 val = h->root.u.c.size;
4224 break;
6c97aedf 4225 case bfd_link_hash_undefweak:
4298e311
ILT		 4226 type = N_WEAKU;
4227 val = 0;
4c3721d5
ILT		 4228 case bfd_link_hash_indirect:
4229 case bfd_link_hash_warning:
4230 /* FIXME: Ignore these for now. The circumstances under which
4231 they should be written out are not clear to me. */
4232 return true;
4233 }
4234
4235 bfd_h_put_8 (output_bfd, type, outsym.e_type);
4236 bfd_h_put_8 (output_bfd, 0, outsym.e_other);
4237 bfd_h_put_16 (output_bfd, 0, outsym.e_desc);
1afd2380 4238 indx = add_to_stringtab (output_bfd, finfo->strtab, h->root.root.string,
d17fc4c9
ILT		 4239 false);
4240 if (indx == (bfd_size_type) -1)
4241 {
4242 /* FIXME: No way to handle errors. */
4243 abort ();
4244 }
4245 PUT_WORD (output_bfd, indx, outsym.e_strx);
4c3721d5
ILT		 4246 PUT_WORD (output_bfd, val, outsym.e_value);
4247
4248 if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0
4249 || bfd_write ((PTR) &outsym, (bfd_size_type) EXTERNAL_NLIST_SIZE,
4250 (bfd_size_type) 1, output_bfd) != EXTERNAL_NLIST_SIZE)
4251 {
4252 /* FIXME: No way to handle errors. */
4253 abort ();
4254 }
4255
4256 finfo->symoff += EXTERNAL_NLIST_SIZE;
4257 h->indx = obj_aout_external_sym_count (output_bfd);
4258 ++obj_aout_external_sym_count (output_bfd);
4259
4260 return true;
4261}
4262
4263/* Link an a.out section into the output file. */
4264
4265static boolean
4266aout_link_input_section (finfo, input_bfd, input_section, reloff_ptr,
1afd2380 4267 rel_size)
4c3721d5
ILT		 4268 struct aout_final_link_info *finfo;
4269 bfd *input_bfd;
4270 asection *input_section;
4271 file_ptr *reloff_ptr;
4272 bfd_size_type rel_size;
4c3721d5
ILT		 4273{
4274 bfd_size_type input_size;
e85e8bfe 4275 PTR relocs;
4c3721d5
ILT		 4276
4277 /* Get the section contents. */
4278 input_size = bfd_section_size (input_bfd, input_section);
1afd2380
ILT		 4279 if (! bfd_get_section_contents (input_bfd, input_section,
4280 (PTR) finfo->contents,
4c3721d5 4281 (file_ptr) 0, input_size))
1afd2380 4282 return false;
4c3721d5 4283
e85e8bfe
ILT		 4284 /* Read in the relocs if we haven't already done it. */
4285 if (aout_section_data (input_section) != NULL
4286 && aout_section_data (input_section)->relocs != NULL)
4287 relocs = aout_section_data (input_section)->relocs;
4288 else
80425e6c 4289 {
1afd2380 4290 relocs = finfo->relocs;
875e4716
ILT		 4291 if (rel_size > 0)
4292 {
4293 if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0
4294 || bfd_read (relocs, 1, rel_size, input_bfd) != rel_size)
4295 return false;
4296 }
80425e6c 4297 }
4c3721d5
ILT		 4298
4299 /* Relocate the section contents. */
4300 if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE)
4301 {
4302 if (! aout_link_input_section_std (finfo, input_bfd, input_section,
4303 (struct reloc_std_external *) relocs,
1afd2380
ILT		 4304 rel_size, finfo->contents))
4305 return false;
4c3721d5
ILT		 4306 }
4307 else
4308 {
4309 if (! aout_link_input_section_ext (finfo, input_bfd, input_section,
4310 (struct reloc_ext_external *) relocs,
1afd2380
ILT		 4311 rel_size, finfo->contents))
4312 return false;
4c3721d5
ILT		 4313 }
4314
4315 /* Write out the section contents. */
4316 if (! bfd_set_section_contents (finfo->output_bfd,
4317 input_section->output_section,
1afd2380 4318 (PTR) finfo->contents,
728472f1 4319 input_section->output_offset,
4c3721d5 4320 input_size))
1afd2380 4321 return false;
4c3721d5
ILT		 4322
4323 /* If we are producing relocateable output, the relocs were
4324 modified, and we now write them out. */
875e4716 4325 if (finfo->info->relocateable && rel_size > 0)
4c3721d5
ILT		 4326 {
4327 if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0)
1afd2380 4328 return false;
4c3721d5
ILT		 4329 if (bfd_write (relocs, (bfd_size_type) 1, rel_size, finfo->output_bfd)
4330 != rel_size)
1afd2380 4331 return false;
4c3721d5
ILT		 4332 *reloff_ptr += rel_size;
4333
4334 /* Assert that the relocs have not run into the symbols, and
4335 that if these are the text relocs they have not run into the
4336 data relocs. */
4337 BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd)
4338 && (reloff_ptr != &finfo->treloff
4339 || (*reloff_ptr
4340 <= obj_datasec (finfo->output_bfd)->rel_filepos)));
4341 }
4342
4343 return true;
4344}
4345
4346/* Get the section corresponding to a reloc index. */
4347
4348static INLINE asection *
4349aout_reloc_index_to_section (abfd, indx)
4350 bfd *abfd;
4351 int indx;
4352{
4353 switch (indx & N_TYPE)
4354 {
4355 case N_TEXT:
4356 return obj_textsec (abfd);
4357 case N_DATA:
4358 return obj_datasec (abfd);
4359 case N_BSS:
4360 return obj_bsssec (abfd);
4361 case N_ABS:
fa2302b8 4362 case N_UNDF:
4587b578 4363 return bfd_abs_section_ptr;
4c3721d5
ILT		 4364 default:
4365 abort ();
4366 }
4367}
4368
4369/* Relocate an a.out section using standard a.out relocs. */
4370
4371static boolean
4372aout_link_input_section_std (finfo, input_bfd, input_section, relocs,
1afd2380 4373 rel_size, contents)
4c3721d5
ILT		 4374 struct aout_final_link_info *finfo;
4375 bfd *input_bfd;
4376 asection *input_section;
4377 struct reloc_std_external *relocs;
4378 bfd_size_type rel_size;
4379 bfd_byte *contents;
4c3721d5 4380{
e85e8bfe
ILT		 4381 boolean (*check_dynamic_reloc) PARAMS ((struct bfd_link_info *,
4382 bfd *, asection *,
4383 struct aout_link_hash_entry *,
ae115e51
ILT		 4384 PTR, bfd_byte *, boolean *,
4385 bfd_vma *));
4c3721d5
ILT		 4386 bfd *output_bfd;
4387 boolean relocateable;
4388 struct external_nlist *syms;
4389 char *strings;
4390 struct aout_link_hash_entry **sym_hashes;
1afd2380 4391 int *symbol_map;
4c3721d5
ILT		 4392 bfd_size_type reloc_count;
4393 register struct reloc_std_external *rel;
4394 struct reloc_std_external *rel_end;
4395
4396 output_bfd = finfo->output_bfd;
e85e8bfe 4397 check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc;
4c3721d5
ILT		 4398
4399 BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE);
4400 BFD_ASSERT (input_bfd->xvec->header_byteorder_big_p
4401 == output_bfd->xvec->header_byteorder_big_p);
4402
4403 relocateable = finfo->info->relocateable;
4404 syms = obj_aout_external_syms (input_bfd);
4405 strings = obj_aout_external_strings (input_bfd);
4406 sym_hashes = obj_aout_sym_hashes (input_bfd);
1afd2380 4407 symbol_map = finfo->symbol_map;
4c3721d5
ILT		 4408
4409 reloc_count = rel_size / RELOC_STD_SIZE;
4410 rel = relocs;
4411 rel_end = rel + reloc_count;
4412 for (; rel < rel_end; rel++)
4413 {
4414 bfd_vma r_addr;
4415 int r_index;
4416 int r_extern;
4417 int r_pcrel;
ae115e51 4418 int r_baserel = 0;
f42fe159 4419 reloc_howto_type *howto;
ae115e51 4420 struct aout_link_hash_entry *h = NULL;
4c3721d5
ILT		 4421 bfd_vma relocation;
4422 bfd_reloc_status_type r;
4423
4424 r_addr = GET_SWORD (input_bfd, rel->r_address);
4425
f42fe159
ILT		 4426#ifdef MY_reloc_howto
4427 howto = MY_reloc_howto(input_bfd, rel, r_index, r_extern, r_pcrel);
4428#else
ae115e51
ILT		 4429 {
4430 int r_jmptable;
4431 int r_relative;
4432 int r_length;
4433 unsigned int howto_idx;
4c3721d5 4434
ae115e51
ILT		 4435 if (input_bfd->xvec->header_byteorder_big_p)
4436 {
4437 r_index = ((rel->r_index[0] << 16)
4438 | (rel->r_index[1] << 8)
4439 | rel->r_index[2]);
4440 r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
4441 r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
4442 r_baserel = (0 != (rel->r_type[0] & RELOC_STD_BITS_BASEREL_BIG));
4443 r_jmptable= (0 != (rel->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG));
4444 r_relative= (0 != (rel->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG));
4445 r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_BIG)
4446 >> RELOC_STD_BITS_LENGTH_SH_BIG);
4447 }
4448 else
4449 {
4450 r_index = ((rel->r_index[2] << 16)
4451 | (rel->r_index[1] << 8)
4452 | rel->r_index[0]);
4453 r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
4454 r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
4455 r_baserel = (0 != (rel->r_type[0]
4456 & RELOC_STD_BITS_BASEREL_LITTLE));
4457 r_jmptable= (0 != (rel->r_type[0]
4458 & RELOC_STD_BITS_JMPTABLE_LITTLE));
4459 r_relative= (0 != (rel->r_type[0]
4460 & RELOC_STD_BITS_RELATIVE_LITTLE));
4461 r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE)
4462 >> RELOC_STD_BITS_LENGTH_SH_LITTLE);
4463 }
4464
4465 howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel
4466 + 16 * r_jmptable + 32 * r_relative);
4467 BFD_ASSERT (howto_idx < TABLE_SIZE (howto_table_std));
4468 howto = howto_table_std + howto_idx;
4469 }
f42fe159 4470#endif
4c3721d5
ILT		 4471
4472 if (relocateable)
4473 {
4474 /* We are generating a relocateable output file, and must
4475 modify the reloc accordingly. */
4476 if (r_extern)
4477 {
4c3721d5
ILT		 4478 /* If we know the symbol this relocation is against,
4479 convert it into a relocation against a section. This
4480 is what the native linker does. */
4481 h = sym_hashes[r_index];
4482 if (h != (struct aout_link_hash_entry *) NULL
6c97aedf
ILT		 4483 && (h->root.type == bfd_link_hash_defined
4484 || h->root.type == bfd_link_hash_defweak))
4c3721d5
ILT		 4485 {
4486 asection *output_section;
4487
4488 /* Change the r_extern value. */
4489 if (output_bfd->xvec->header_byteorder_big_p)
4490 rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_BIG;
4491 else
4492 rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_LITTLE;
4493
4494 /* Compute a new r_index. */
4495 output_section = h->root.u.def.section->output_section;
4496 if (output_section == obj_textsec (output_bfd))
4497 r_index = N_TEXT;
4498 else if (output_section == obj_datasec (output_bfd))
4499 r_index = N_DATA;
4500 else if (output_section == obj_bsssec (output_bfd))
4501 r_index = N_BSS;
4502 else
4503 r_index = N_ABS;
4504
4505 /* Add the symbol value and the section VMA to the
4506 addend stored in the contents. */
4507 relocation = (h->root.u.def.value
4508 + output_section->vma
4509 + h->root.u.def.section->output_offset);
4510 }
4511 else
4512 {
4513 /* We must change r_index according to the symbol
4514 map. */
4515 r_index = symbol_map[r_index];
4516
4517 if (r_index == -1)
4518 {
74942465
ILT		 4519 if (h != NULL)
4520 {
4521 /* We decided to strip this symbol, but it
4522 turns out that we can't. Note that we
4523 lose the other and desc information here.
4524 I don't think that will ever matter for a
4525 global symbol. */
4526 if (h->indx < 0)
4527 {
4528 h->indx = -2;
4529 h->written = false;
4530 if (! aout_link_write_other_symbol (h,
4531 (PTR) finfo))
4532 return false;
4533 }
4534 r_index = h->indx;
4535 }
4536 else
4537 {
4538 const char *name;
4539
4540 name = strings + GET_WORD (input_bfd,
4541 syms[r_index].e_strx);
4542 if (! ((*finfo->info->callbacks->unattached_reloc)
4543 (finfo->info, name, input_bfd, input_section,
4544 r_addr)))
4545 return false;
4546 r_index = 0;
4547 }
4c3721d5
ILT		 4548 }
4549
4550 relocation = 0;
4551 }
4552
4553 /* Write out the new r_index value. */
4554 if (output_bfd->xvec->header_byteorder_big_p)
4555 {
4556 rel->r_index[0] = r_index >> 16;
4557 rel->r_index[1] = r_index >> 8;
4558 rel->r_index[2] = r_index;
4559 }
4560 else
4561 {
4562 rel->r_index[2] = r_index >> 16;
4563 rel->r_index[1] = r_index >> 8;
4564 rel->r_index[0] = r_index;
4565 }
4566 }
4567 else
4568 {
4569 asection *section;
4570
4571 /* This is a relocation against a section. We must
4572 adjust by the amount that the section moved. */
4573 section = aout_reloc_index_to_section (input_bfd, r_index);
4574 relocation = (section->output_section->vma
4575 + section->output_offset
4576 - section->vma);
4577 }
4578
4579 /* Change the address of the relocation. */
4580 PUT_WORD (output_bfd,
4581 r_addr + input_section->output_offset,
4582 rel->r_address);
4583
4584 /* Adjust a PC relative relocation by removing the reference
e68de5d5
ILT		 4585 to the original address in the section and including the
4586 reference to the new address. */
4c3721d5 4587 if (r_pcrel)
e68de5d5
ILT		 4588 relocation -= (input_section->output_section->vma
4589 + input_section->output_offset
4590 - input_section->vma);
4c3721d5 4591
943fbd5b
KR		 4592#ifdef MY_relocatable_reloc
4593 MY_relocatable_reloc (howto, output_bfd, rel, relocation, r_addr);
4594#endif
4595
4c3721d5
ILT		 4596 if (relocation == 0)
4597 r = bfd_reloc_ok;
4598 else
34e9ffbc 4599 r = MY_relocate_contents (howto,
4c3721d5
ILT		 4600 input_bfd, relocation,
4601 contents + r_addr);
4602 }
4603 else
4604 {
ae115e51
ILT		 4605 boolean hundef;
4606
4c3721d5
ILT		 4607 /* We are generating an executable, and must do a full
4608 relocation. */
ae115e51 4609 hundef = false;
4c3721d5
ILT		 4610 if (r_extern)
4611 {
4c3721d5 4612 h = sym_hashes[r_index];
e85e8bfe 4613
4c3721d5 4614 if (h != (struct aout_link_hash_entry *) NULL
6c97aedf
ILT		 4615 && (h->root.type == bfd_link_hash_defined
4616 || h->root.type == bfd_link_hash_defweak))
4c3721d5
ILT		 4617 {
4618 relocation = (h->root.u.def.value
4619 + h->root.u.def.section->output_section->vma
4620 + h->root.u.def.section->output_offset);
4621 }
4298e311 4622 else if (h != (struct aout_link_hash_entry *) NULL
6c97aedf 4623 && h->root.type == bfd_link_hash_undefweak)
4298e311 4624 relocation = 0;
4c3721d5
ILT		 4625 else
4626 {
ae115e51 4627 hundef = true;
4c3721d5
ILT		 4628 relocation = 0;
4629 }
4630 }
4631 else
4632 {
4633 asection *section;
4634
4635 section = aout_reloc_index_to_section (input_bfd, r_index);
4636 relocation = (section->output_section->vma
4637 + section->output_offset
4638 - section->vma);
e68de5d5
ILT		 4639 if (r_pcrel)
4640 relocation += input_section->vma;
4c3721d5
ILT		 4641 }
4642
ae115e51
ILT		 4643 if (check_dynamic_reloc != NULL)
4644 {
4645 boolean skip;
4646
4647 if (! ((*check_dynamic_reloc)
4648 (finfo->info, input_bfd, input_section, h,
4649 (PTR) rel, contents, &skip, &relocation)))
4650 return false;
4651 if (skip)
4652 continue;
4653 }
4654
4655 /* Now warn if a global symbol is undefined. We could not
4656 do this earlier, because check_dynamic_reloc might want
4657 to skip this reloc. */
4658 if (hundef && ! finfo->info->shared && ! r_baserel)
4659 {
4660 const char *name;
4661
4662 name = strings + GET_WORD (input_bfd, syms[r_index].e_strx);
4663 if (! ((*finfo->info->callbacks->undefined_symbol)
4664 (finfo->info, name, input_bfd, input_section, r_addr)))
4665 return false;
4666 }
4667
34e9ffbc 4668 r = MY_final_link_relocate (howto,
4c3721d5
ILT		 4669 input_bfd, input_section,
4670 contents, r_addr, relocation,
4671 (bfd_vma) 0);
4672 }
4673
4674 if (r != bfd_reloc_ok)
4675 {
4676 switch (r)
4677 {
4678 default:
4679 case bfd_reloc_outofrange:
4680 abort ();
4681 case bfd_reloc_overflow:
4991ebb9
ILT		 4682 {
4683 const char *name;
4684
4685 if (r_extern)
4686 name = strings + GET_WORD (input_bfd,
4687 syms[r_index].e_strx);
4688 else
4689 {
4690 asection *s;
4691
4692 s = aout_reloc_index_to_section (input_bfd, r_index);
4693 name = bfd_section_name (input_bfd, s);
4694 }
4695 if (! ((*finfo->info->callbacks->reloc_overflow)
f42fe159 4696 (finfo->info, name, howto->name,
4991ebb9
ILT		 4697 (bfd_vma) 0, input_bfd, input_section, r_addr)))
4698 return false;
4699 }
4c3721d5
ILT		 4700 break;
4701 }
4702 }
4703 }
4704
4705 return true;
4706}
4707
4708/* Relocate an a.out section using extended a.out relocs. */
4709
4710static boolean
4711aout_link_input_section_ext (finfo, input_bfd, input_section, relocs,
1afd2380 4712 rel_size, contents)
4c3721d5
ILT		 4713 struct aout_final_link_info *finfo;
4714 bfd *input_bfd;
4715 asection *input_section;
4716 struct reloc_ext_external *relocs;
4717 bfd_size_type rel_size;
4718 bfd_byte *contents;
4c3721d5 4719{
e85e8bfe
ILT		 4720 boolean (*check_dynamic_reloc) PARAMS ((struct bfd_link_info *,
4721 bfd *, asection *,
4722 struct aout_link_hash_entry *,
ae115e51
ILT		 4723 PTR, bfd_byte *, boolean *,
4724 bfd_vma *));
4c3721d5
ILT		 4725 bfd *output_bfd;
4726 boolean relocateable;
4727 struct external_nlist *syms;
4728 char *strings;
4729 struct aout_link_hash_entry **sym_hashes;
1afd2380 4730 int *symbol_map;
4c3721d5
ILT		 4731 bfd_size_type reloc_count;
4732 register struct reloc_ext_external *rel;
4733 struct reloc_ext_external *rel_end;
4734
4735 output_bfd = finfo->output_bfd;
e85e8bfe 4736 check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc;
4c3721d5
ILT		 4737
4738 BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_EXT_SIZE);
4739 BFD_ASSERT (input_bfd->xvec->header_byteorder_big_p
4740 == output_bfd->xvec->header_byteorder_big_p);
4741
4742 relocateable = finfo->info->relocateable;
4743 syms = obj_aout_external_syms (input_bfd);
4744 strings = obj_aout_external_strings (input_bfd);
4745 sym_hashes = obj_aout_sym_hashes (input_bfd);
1afd2380 4746 symbol_map = finfo->symbol_map;
4c3721d5
ILT		 4747
4748 reloc_count = rel_size / RELOC_EXT_SIZE;
4749 rel = relocs;
4750 rel_end = rel + reloc_count;
4751 for (; rel < rel_end; rel++)
4752 {
4753 bfd_vma r_addr;
4754 int r_index;
4755 int r_extern;
ae115e51 4756 unsigned int r_type;
4c3721d5 4757 bfd_vma r_addend;
ae115e51
ILT		 4758 struct aout_link_hash_entry *h = NULL;
4759 asection *r_section = NULL;
4c3721d5
ILT		 4760 bfd_vma relocation;
4761
4762 r_addr = GET_SWORD (input_bfd, rel->r_address);
4763
4764 if (input_bfd->xvec->header_byteorder_big_p)
4765 {
4766 r_index = ((rel->r_index[0] << 16)
4767 | (rel->r_index[1] << 8)
4768 | rel->r_index[2]);
4769 r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG));
4770 r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
4771 >> RELOC_EXT_BITS_TYPE_SH_BIG);
4772 }
4773 else
4774 {
4775 r_index = ((rel->r_index[2] << 16)
4776 | (rel->r_index[1] << 8)
4777 | rel->r_index[0]);
4778 r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE));
4779 r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
4780 >> RELOC_EXT_BITS_TYPE_SH_LITTLE);
4781 }
4782
4783 r_addend = GET_SWORD (input_bfd, rel->r_addend);
4784
ae115e51 4785 BFD_ASSERT (r_type < TABLE_SIZE (howto_table_ext));
e68de5d5 4786
4c3721d5
ILT		 4787 if (relocateable)
4788 {
4789 /* We are generating a relocateable output file, and must
4790 modify the reloc accordingly. */
4791 if (r_extern)
4792 {
4c3721d5
ILT		 4793 /* If we know the symbol this relocation is against,
4794 convert it into a relocation against a section. This
4795 is what the native linker does. */
4796 h = sym_hashes[r_index];
4797 if (h != (struct aout_link_hash_entry *) NULL
6c97aedf
ILT		 4798 && (h->root.type == bfd_link_hash_defined
4799 || h->root.type == bfd_link_hash_defweak))
4c3721d5
ILT		 4800 {
4801 asection *output_section;
4802
4803 /* Change the r_extern value. */
4804 if (output_bfd->xvec->header_byteorder_big_p)
4805 rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_BIG;
4806 else
4807 rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_LITTLE;
4808
4809 /* Compute a new r_index. */
4810 output_section = h->root.u.def.section->output_section;
4811 if (output_section == obj_textsec (output_bfd))
4812 r_index = N_TEXT;
4813 else if (output_section == obj_datasec (output_bfd))
4814 r_index = N_DATA;
4815 else if (output_section == obj_bsssec (output_bfd))
4816 r_index = N_BSS;
4817 else
4818 r_index = N_ABS;
4819
4820 /* Add the symbol value and the section VMA to the
4821 addend. */
4822 relocation = (h->root.u.def.value
4823 + output_section->vma
4824 + h->root.u.def.section->output_offset);
e68de5d5
ILT		 4825
4826 /* Now RELOCATION is the VMA of the final
4827 destination. If this is a PC relative reloc,
4828 then ADDEND is the negative of the source VMA.
4829 We want to set ADDEND to the difference between
4830 the destination VMA and the source VMA, which
4831 means we must adjust RELOCATION by the change in
4832 the source VMA. This is done below. */
4c3721d5
ILT		 4833 }
4834 else
4835 {
4836 /* We must change r_index according to the symbol
4837 map. */
4838 r_index = symbol_map[r_index];
4839
4840 if (r_index == -1)
4841 {
74942465
ILT		 4842 if (h != NULL)
4843 {
4844 /* We decided to strip this symbol, but it
4845 turns out that we can't. Note that we
4846 lose the other and desc information here.
4847 I don't think that will ever matter for a
4848 global symbol. */
4849 if (h->indx < 0)
4850 {
4851 h->indx = -2;
4852 h->written = false;
4853 if (! aout_link_write_other_symbol (h,
4854 (PTR) finfo))
4855 return false;
4856 }
4857 r_index = h->indx;
4858 }
4859 else
4860 {
4861 const char *name;
4862
4863 name = strings + GET_WORD (input_bfd,
4864 syms[r_index].e_strx);
4865 if (! ((*finfo->info->callbacks->unattached_reloc)
4866 (finfo->info, name, input_bfd, input_section,
4867 r_addr)))
4868 return false;
4869 r_index = 0;
4870 }
4c3721d5
ILT		 4871 }
4872
4873 relocation = 0;
e68de5d5
ILT		 4874
4875 /* If this is a PC relative reloc, then the addend
4876 is the negative of the source VMA. We must
4877 adjust it by the change in the source VMA. This
4878 is done below. */
4c3721d5
ILT		 4879 }
4880
4881 /* Write out the new r_index value. */
4882 if (output_bfd->xvec->header_byteorder_big_p)
4883 {
4884 rel->r_index[0] = r_index >> 16;
4885 rel->r_index[1] = r_index >> 8;
4886 rel->r_index[2] = r_index;
4887 }
4888 else
4889 {
4890 rel->r_index[2] = r_index >> 16;
4891 rel->r_index[1] = r_index >> 8;
4892 rel->r_index[0] = r_index;
4893 }
4894 }
4895 else
4896 {
4c3721d5
ILT		 4897 /* This is a relocation against a section. We must
4898 adjust by the amount that the section moved. */
ae115e51
ILT		 4899 r_section = aout_reloc_index_to_section (input_bfd, r_index);
4900 relocation = (r_section->output_section->vma
4901 + r_section->output_offset
4902 - r_section->vma);
4c3721d5 4903
e68de5d5
ILT		 4904 /* If this is a PC relative reloc, then the addend is
4905 the difference in VMA between the destination and the
4906 source. We have just adjusted for the change in VMA
4907 of the destination, so we must also adjust by the
4908 change in VMA of the source. This is done below. */
4c3721d5
ILT		 4909 }
4910
e68de5d5
ILT		 4911 /* As described above, we must always adjust a PC relative
4912 reloc by the change in VMA of the source. */
4913 if (howto_table_ext[r_type].pc_relative)
4914 relocation -= (input_section->output_section->vma
4915 + input_section->output_offset
4916 - input_section->vma);
4917
4c3721d5
ILT		 4918 /* Change the addend if necessary. */
4919 if (relocation != 0)
4920 PUT_WORD (output_bfd, r_addend + relocation, rel->r_addend);
4921
4922 /* Change the address of the relocation. */
4923 PUT_WORD (output_bfd,
4924 r_addr + input_section->output_offset,
4925 rel->r_address);
4926 }
4927 else
4928 {
ae115e51 4929 boolean hundef;
4c3721d5
ILT		 4930 bfd_reloc_status_type r;
4931
4932 /* We are generating an executable, and must do a full
4933 relocation. */
ae115e51 4934 hundef = false;
4c3721d5
ILT		 4935 if (r_extern)
4936 {
4c3721d5 4937 h = sym_hashes[r_index];
e85e8bfe 4938
4c3721d5 4939 if (h != (struct aout_link_hash_entry *) NULL
6c97aedf
ILT		 4940 && (h->root.type == bfd_link_hash_defined
4941 || h->root.type == bfd_link_hash_defweak))
4c3721d5
ILT		 4942 {
4943 relocation = (h->root.u.def.value
4944 + h->root.u.def.section->output_section->vma
4945 + h->root.u.def.section->output_offset);
4946 }
4298e311 4947 else if (h != (struct aout_link_hash_entry *) NULL
6c97aedf 4948 && h->root.type == bfd_link_hash_undefweak)
4298e311 4949 relocation = 0;
4c3721d5
ILT		 4950 else
4951 {
ae115e51 4952 hundef = true;
4c3721d5
ILT		 4953 relocation = 0;
4954 }
4955 }
ae115e51
ILT		 4956 else if (r_type == RELOC_BASE10
4957 || r_type == RELOC_BASE13
4958 || r_type == RELOC_BASE22)
4959 {
4960 struct external_nlist *sym;
4961 int type;
4962
4963 /* For base relative relocs, r_index is always an index
4964 into the symbol table, even if r_extern is 0. */
4965 sym = syms + r_index;
4966 type = bfd_h_get_8 (input_bfd, sym->e_type);
4967 if ((type & N_TYPE) == N_TEXT
4968 || type == N_WEAKT)
4969 r_section = obj_textsec (input_bfd);
4970 else if ((type & N_TYPE) == N_DATA
4971 || type == N_WEAKD)
4972 r_section = obj_datasec (input_bfd);
4973 else if ((type & N_TYPE) == N_BSS
4974 || type == N_WEAKB)
4975 r_section = obj_bsssec (input_bfd);
4976 else if ((type & N_TYPE) == N_ABS
4977 || type == N_WEAKA)
4978 r_section = bfd_abs_section_ptr;
4979 else
4980 abort ();
4981 relocation = (r_section->output_section->vma
4982 + r_section->output_offset
4983 + (GET_WORD (input_bfd, sym->e_value)
4984 - r_section->vma));
4985 }
4c3721d5
ILT		 4986 else
4987 {
ae115e51 4988 r_section = aout_reloc_index_to_section (input_bfd, r_index);
e68de5d5
ILT		 4989
4990 /* If this is a PC relative reloc, then R_ADDEND is the
4991 difference between the two vmas, or
4992 old_dest_sec + old_dest_off - (old_src_sec + old_src_off)
4993 where
4994 old_dest_sec == section->vma
4995 and
4996 old_src_sec == input_section->vma
4997 and
4998 old_src_off == r_addr
4999
5000 _bfd_final_link_relocate expects RELOCATION +
5001 R_ADDEND to be the VMA of the destination minus
5002 r_addr (the minus r_addr is because this relocation
5003 is not pcrel_offset, which is a bit confusing and
5004 should, perhaps, be changed), or
5005 new_dest_sec
5006 where
5007 new_dest_sec == output_section->vma + output_offset
5008 We arrange for this to happen by setting RELOCATION to
5009 new_dest_sec + old_src_sec - old_dest_sec
5010
5011 If this is not a PC relative reloc, then R_ADDEND is
5012 simply the VMA of the destination, so we set
5013 RELOCATION to the change in the destination VMA, or
5014 new_dest_sec - old_dest_sec
5015 */
ae115e51
ILT		 5016 relocation = (r_section->output_section->vma
5017 + r_section->output_offset
5018 - r_section->vma);
e68de5d5
ILT		 5019 if (howto_table_ext[r_type].pc_relative)
5020 relocation += input_section->vma;
4c3721d5
ILT		 5021 }
5022
ae115e51
ILT		 5023 if (check_dynamic_reloc != NULL)
5024 {
5025 boolean skip;
5026
5027 if (! ((*check_dynamic_reloc)
5028 (finfo->info, input_bfd, input_section, h,
5029 (PTR) rel, contents, &skip, &relocation)))
5030 return false;
5031 if (skip)
5032 continue;
5033 }
5034
5035 /* Now warn if a global symbol is undefined. We could not
5036 do this earlier, because check_dynamic_reloc might want
5037 to skip this reloc. */
5038 if (hundef
5039 && ! finfo->info->shared
5040 && r_type != RELOC_BASE10
5041 && r_type != RELOC_BASE13
5042 && r_type != RELOC_BASE22)
5043 {
5044 const char *name;
5045
5046 name = strings + GET_WORD (input_bfd, syms[r_index].e_strx);
5047 if (! ((*finfo->info->callbacks->undefined_symbol)
5048 (finfo->info, name, input_bfd, input_section, r_addr)))
5049 return false;
5050 }
5051
34e9ffbc 5052 r = MY_final_link_relocate (howto_table_ext + r_type,
4c3721d5
ILT		 5053 input_bfd, input_section,
5054 contents, r_addr, relocation,
5055 r_addend);
5056 if (r != bfd_reloc_ok)
5057 {
5058 switch (r)
5059 {
5060 default:
5061 case bfd_reloc_outofrange:
5062 abort ();
5063 case bfd_reloc_overflow:
4991ebb9
ILT		 5064 {
5065 const char *name;
5066
ae115e51
ILT		 5067 if (r_extern
5068 || r_type == RELOC_BASE10
5069 || r_type == RELOC_BASE13
5070 || r_type == RELOC_BASE22)
4991ebb9
ILT		 5071 name = strings + GET_WORD (input_bfd,
5072 syms[r_index].e_strx);
5073 else
5074 {
5075 asection *s;
5076
5077 s = aout_reloc_index_to_section (input_bfd, r_index);
5078 name = bfd_section_name (input_bfd, s);
5079 }
5080 if (! ((*finfo->info->callbacks->reloc_overflow)
5081 (finfo->info, name, howto_table_ext[r_type].name,
5082 r_addend, input_bfd, input_section, r_addr)))
5083 return false;
5084 }
4c3721d5
ILT		 5085 break;
5086 }
5087 }
5088 }
5089 }
5090
5091 return true;
5092}
ec099b4b
ILT		 5093
5094/* Handle a link order which is supposed to generate a reloc. */
5095
5096static boolean
5097aout_link_reloc_link_order (finfo, o, p)
5098 struct aout_final_link_info *finfo;
5099 asection *o;
5100 struct bfd_link_order *p;
5101{
5102 struct bfd_link_order_reloc *pr;
5103 int r_index;
5104 int r_extern;
82b1edf7 5105 reloc_howto_type *howto;
ec099b4b
ILT		 5106 file_ptr *reloff_ptr;
5107 struct reloc_std_external srel;
5108 struct reloc_ext_external erel;
5109 PTR rel_ptr;
5110
5111 pr = p->u.reloc.p;
5112
5113 if (p->type == bfd_section_reloc_link_order)
5114 {
5115 r_extern = 0;
4587b578 5116 if (bfd_is_abs_section (pr->u.section))
ec099b4b
ILT		 5117 r_index = N_ABS | N_EXT;
5118 else
5119 {
5120 BFD_ASSERT (pr->u.section->owner == finfo->output_bfd);
5121 r_index = pr->u.section->target_index;
5122 }
5123 }
5124 else
5125 {
5126 struct aout_link_hash_entry *h;
5127
5128 BFD_ASSERT (p->type == bfd_symbol_reloc_link_order);
5129 r_extern = 1;
5130 h = aout_link_hash_lookup (aout_hash_table (finfo->info),
5131 pr->u.name, false, false, true);
5132 if (h != (struct aout_link_hash_entry *) NULL
74942465 5133 && h->indx >= 0)
ec099b4b 5134 r_index = h->indx;
74942465
ILT		 5135 else if (h != NULL)
5136 {
5137 /* We decided to strip this symbol, but it turns out that we
5138 can't. Note that we lose the other and desc information
5139 here. I don't think that will ever matter for a global
5140 symbol. */
5141 h->indx = -2;
5142 h->written = false;
5143 if (! aout_link_write_other_symbol (h, (PTR) finfo))
5144 return false;
5145 r_index = h->indx;
5146 }
ec099b4b
ILT		 5147 else
5148 {
5149 if (! ((*finfo->info->callbacks->unattached_reloc)
5150 (finfo->info, pr->u.name, (bfd *) NULL,
5151 (asection *) NULL, (bfd_vma) 0)))
5152 return false;
5153 r_index = 0;
5154 }
5155 }
5156
5157 howto = bfd_reloc_type_lookup (finfo->output_bfd, pr->reloc);
82b1edf7 5158 if (howto == 0)
ec099b4b
ILT		 5159 {
5160 bfd_set_error (bfd_error_bad_value);
5161 return false;
5162 }
5163
5164 if (o == obj_textsec (finfo->output_bfd))
5165 reloff_ptr = &finfo->treloff;
5166 else if (o == obj_datasec (finfo->output_bfd))
5167 reloff_ptr = &finfo->dreloff;
5168 else
5169 abort ();
5170
5171 if (obj_reloc_entry_size (finfo->output_bfd) == RELOC_STD_SIZE)
5172 {
f42fe159 5173#ifdef MY_put_reloc
ae115e51
ILT		 5174 MY_put_reloc(finfo->output_bfd, r_extern, r_index, p->offset, howto,
5175 &srel);
f42fe159 5176#else
ae115e51
ILT		 5177 {
5178 int r_pcrel;
5179 int r_baserel;
5180 int r_jmptable;
5181 int r_relative;
5182 int r_length;
5183
5184 r_pcrel = howto->pc_relative;
5185 r_baserel = (howto->type & 8) != 0;
5186 r_jmptable = (howto->type & 16) != 0;
5187 r_relative = (howto->type & 32) != 0;
5188 r_length = howto->size;
5189
5190 PUT_WORD (finfo->output_bfd, p->offset, srel.r_address);
5191 if (finfo->output_bfd->xvec->header_byteorder_big_p)
5192 {
5193 srel.r_index[0] = r_index >> 16;
5194 srel.r_index[1] = r_index >> 8;
5195 srel.r_index[2] = r_index;
5196 srel.r_type[0] =
5197 ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0)
5198 | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0)
5199 | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0)
5200 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0)
5201 | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0)
5202 | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG));
5203 }
5204 else
5205 {
5206 srel.r_index[2] = r_index >> 16;
5207 srel.r_index[1] = r_index >> 8;
5208 srel.r_index[0] = r_index;
5209 srel.r_type[0] =
5210 ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0)
5211 | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0)
5212 | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0)
5213 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0)
5214 | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0)
5215 | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE));
5216 }
5217 }
f42fe159 5218#endif
ec099b4b
ILT		 5219 rel_ptr = (PTR) &srel;
5220
5221 /* We have to write the addend into the object file, since
5222 standard a.out relocs are in place. It would be more
5223 reliable if we had the current contents of the file here,
5224 rather than assuming zeroes, but we can't read the file since
5225 it was opened using bfd_openw. */
5226 if (pr->addend != 0)
5227 {
5228 bfd_size_type size;
5229 bfd_reloc_status_type r;
5230 bfd_byte *buf;
5231 boolean ok;
5232
5233 size = bfd_get_reloc_size (howto);
e85e8bfe 5234 buf = (bfd_byte *) bfd_zmalloc (size);
ec099b4b 5235 if (buf == (bfd_byte *) NULL)
a9713b91 5236 return false;
34e9ffbc 5237 r = MY_relocate_contents (howto, finfo->output_bfd,
ec099b4b
ILT		 5238 pr->addend, buf);
5239 switch (r)
5240 {
5241 case bfd_reloc_ok:
5242 break;
5243 default:
5244 case bfd_reloc_outofrange:
5245 abort ();
5246 case bfd_reloc_overflow:
5247 if (! ((*finfo->info->callbacks->reloc_overflow)
5248 (finfo->info,
5249 (p->type == bfd_section_reloc_link_order
5250 ? bfd_section_name (finfo->output_bfd,
5251 pr->u.section)
5252 : pr->u.name),
5253 howto->name, pr->addend, (bfd *) NULL,
5254 (asection *) NULL, (bfd_vma) 0)))
5255 {
5256 free (buf);
5257 return false;
5258 }
5259 break;
5260 }
5261 ok = bfd_set_section_contents (finfo->output_bfd, o,
5262 (PTR) buf,
5263 (file_ptr) p->offset,
5264 size);
5265 free (buf);
5266 if (! ok)
5267 return false;
5268 }
5269 }
5270 else
5271 {
5272 PUT_WORD (finfo->output_bfd, p->offset, erel.r_address);
5273
5274 if (finfo->output_bfd->xvec->header_byteorder_big_p)
5275 {
5276 erel.r_index[0] = r_index >> 16;
5277 erel.r_index[1] = r_index >> 8;
5278 erel.r_index[2] = r_index;
5279 erel.r_type[0] =
5280 ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0)
5281 | (howto->type << RELOC_EXT_BITS_TYPE_SH_BIG));
5282 }
5283 else
5284 {
5285 erel.r_index[2] = r_index >> 16;
5286 erel.r_index[1] = r_index >> 8;
5287 erel.r_index[0] = r_index;
5288 erel.r_type[0] =
5289 (r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0)
5290 | (howto->type << RELOC_EXT_BITS_TYPE_SH_LITTLE);
5291 }
5292
5293 PUT_WORD (finfo->output_bfd, pr->addend, erel.r_addend);
5294
5295 rel_ptr = (PTR) &erel;
5296 }
5297
5298 if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0
5299 || (bfd_write (rel_ptr, (bfd_size_type) 1,
5300 obj_reloc_entry_size (finfo->output_bfd),
5301 finfo->output_bfd)
5302 != obj_reloc_entry_size (finfo->output_bfd)))
5303 return false;
5304
5305 *reloff_ptr += obj_reloc_entry_size (finfo->output_bfd);
5306
5307 /* Assert that the relocs have not run into the symbols, and that n
5308 the text relocs have not run into the data relocs. */
5309 BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd)
5310 && (reloff_ptr != &finfo->treloff
5311 || (*reloff_ptr
5312 <= obj_datasec (finfo->output_bfd)->rel_filepos)));
5313
5314 return true;
5315}
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