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* coffgen.c (coff_print_symbol): Cast pointer different to long
[deliverable/binutils-gdb.git] / bfd / aoutx.h
CommitLineData
1f29e30b 1/* BFD semi-generic back-end for a.out binaries.
9783e04a 2 Copyright 1990, 1991, 1992, 1993, 1994 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
SC		 18along with this program; if not, write to the Free Software
19Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, 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
c618de01
SC		 120#define KEEPIT flags
121#define KEEPITTYPE int
67c060c3 122
a99c3d70 123#include <string.h> /* For strchr and friends */
67c060c3 124#include "bfd.h"
7ed4093a 125#include <sysdep.h>
4c3721d5 126#include "bfdlink.h"
7ed4093a 127
6f715d66 128#include "libaout.h"
7ed4093a 129#include "libbfd.h"
c3eb25fc
SC		 130#include "aout/aout64.h"
131#include "aout/stab_gnu.h"
132#include "aout/ar.h"
7ed4093a 133
5c8444f8 134static boolean aout_get_external_symbols PARAMS ((bfd *));
4298e311
ILT		 135static boolean translate_from_native_sym_flags
136 PARAMS ((bfd *, aout_symbol_type *));
137static boolean translate_to_native_sym_flags
138 PARAMS ((bfd *, asymbol *, struct external_nlist *));
0ee75d02 139
4e41b5aa
SC		 140/*
141SUBSECTION
4c3721d5 142 Relocations
4e41b5aa
SC		 143
144DESCRIPTION
c188b0be 145 The file @file{aoutx.h} provides for both the @emph{standard}
4e41b5aa
SC		 146 and @emph{extended} forms of a.out relocation records.
147
c188b0be
DM		 148 The standard records contain only an
149 address, a symbol index, and a type field. The extended records
4e41b5aa 150 (used on 29ks and sparcs) also have a full integer for an
c188b0be 151 addend.
7ed4093a 152
6f715d66 153*/
f42fe159 154#ifndef CTOR_TABLE_RELOC_HOWTO
7ed4093a 155#define CTOR_TABLE_RELOC_IDX 2
f42fe159
ILT		 156#define CTOR_TABLE_RELOC_HOWTO(BFD) ((obj_reloc_entry_size(BFD) == RELOC_EXT_SIZE \
157 ? howto_table_ext : howto_table_std) \
158 + CTOR_TABLE_RELOC_IDX)
159#endif
160
161#ifndef MY_swap_std_reloc_in
162#define MY_swap_std_reloc_in NAME(aout,swap_std_reloc_in)
163#endif
164
165#ifndef MY_swap_std_reloc_out
166#define MY_swap_std_reloc_out NAME(aout,swap_std_reloc_out)
167#endif
67c060c3 168
ce07dd7c
KR		 169#define howto_table_ext NAME(aout,ext_howto_table)
170#define howto_table_std NAME(aout,std_howto_table)
67c060c3 171
c188b0be 172reloc_howto_type howto_table_ext[] =
7ed4093a 173{
4c3721d5 174 /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone */
2e235c93
ILT		 175 HOWTO(RELOC_8, 0, 0, 8, false, 0, complain_overflow_bitfield,0,"8", false, 0,0x000000ff, false),
176 HOWTO(RELOC_16, 0, 1, 16, false, 0, complain_overflow_bitfield,0,"16", false, 0,0x0000ffff, false),
177 HOWTO(RELOC_32, 0, 2, 32, false, 0, complain_overflow_bitfield,0,"32", false, 0,0xffffffff, false),
178 HOWTO(RELOC_DISP8, 0, 0, 8, true, 0, complain_overflow_signed,0,"DISP8", false, 0,0x000000ff, false),
179 HOWTO(RELOC_DISP16, 0, 1, 16, true, 0, complain_overflow_signed,0,"DISP16", false, 0,0x0000ffff, false),
180 HOWTO(RELOC_DISP32, 0, 2, 32, true, 0, complain_overflow_signed,0,"DISP32", false, 0,0xffffffff, false),
181 HOWTO(RELOC_WDISP30,2, 2, 30, true, 0, complain_overflow_signed,0,"WDISP30", false, 0,0x3fffffff, false),
182 HOWTO(RELOC_WDISP22,2, 2, 22, true, 0, complain_overflow_signed,0,"WDISP22", false, 0,0x003fffff, false),
183 HOWTO(RELOC_HI22, 10, 2, 22, false, 0, complain_overflow_bitfield,0,"HI22", false, 0,0x003fffff, false),
184 HOWTO(RELOC_22, 0, 2, 22, false, 0, complain_overflow_bitfield,0,"22", false, 0,0x003fffff, false),
185 HOWTO(RELOC_13, 0, 2, 13, false, 0, complain_overflow_bitfield,0,"13", false, 0,0x00001fff, false),
186 HOWTO(RELOC_LO10, 0, 2, 10, false, 0, complain_overflow_dont,0,"LO10", false, 0,0x000003ff, false),
187 HOWTO(RELOC_SFA_BASE,0, 2, 32, false, 0, complain_overflow_bitfield,0,"SFA_BASE", false, 0,0xffffffff, false),
188 HOWTO(RELOC_SFA_OFF13,0,2, 32, false, 0, complain_overflow_bitfield,0,"SFA_OFF13",false, 0,0xffffffff, false),
189 HOWTO(RELOC_BASE10, 0, 2, 16, false, 0, complain_overflow_bitfield,0,"BASE10", false, 0,0x0000ffff, false),
190 HOWTO(RELOC_BASE13, 0, 2, 13, false, 0, complain_overflow_bitfield,0,"BASE13", false, 0,0x00001fff, false),
191 HOWTO(RELOC_BASE22, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"BASE22", false, 0,0x00000000, false),
192 HOWTO(RELOC_PC10, 0, 2, 10, false, 0, complain_overflow_bitfield,0,"PC10", false, 0,0x000003ff, false),
193 HOWTO(RELOC_PC22, 0, 2, 22, false, 0, complain_overflow_bitfield,0,"PC22", false, 0,0x003fffff, false),
194 HOWTO(RELOC_JMP_TBL,0, 2, 32, false, 0, complain_overflow_bitfield,0,"JMP_TBL", false, 0,0xffffffff, false),
195 HOWTO(RELOC_SEGOFF16,0, 2, 0, false, 0, complain_overflow_bitfield,0,"SEGOFF16", false, 0,0x00000000, false),
196 HOWTO(RELOC_GLOB_DAT,0, 2, 0, false, 0, complain_overflow_bitfield,0,"GLOB_DAT", false, 0,0x00000000, false),
197 HOWTO(RELOC_JMP_SLOT,0, 2, 0, false, 0, complain_overflow_bitfield,0,"JMP_SLOT", false, 0,0x00000000, false),
198 HOWTO(RELOC_RELATIVE,0, 2, 0, false, 0, complain_overflow_bitfield,0,"RELATIVE", false, 0,0x00000000, false),
7ed4093a
SC		 199};
200
201/* Convert standard reloc records to "arelent" format (incl byte swap). */
202
ce07dd7c 203reloc_howto_type howto_table_std[] = {
4c3721d5 204 /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone */
c188b0be 205HOWTO( 0, 0, 0, 8, false, 0, complain_overflow_bitfield,0,"8", true, 0x000000ff,0x000000ff, false),
2e235c93
ILT		 206HOWTO( 1, 0, 1, 16, false, 0, complain_overflow_bitfield,0,"16", true, 0x0000ffff,0x0000ffff, false),
207HOWTO( 2, 0, 2, 32, false, 0, complain_overflow_bitfield,0,"32", true, 0xffffffff,0xffffffff, false),
c188b0be
DM		 208HOWTO( 3, 0, 4, 64, false, 0, complain_overflow_bitfield,0,"64", true, 0xdeaddead,0xdeaddead, false),
209HOWTO( 4, 0, 0, 8, true, 0, complain_overflow_signed, 0,"DISP8", true, 0x000000ff,0x000000ff, false),
210HOWTO( 5, 0, 1, 16, true, 0, complain_overflow_signed, 0,"DISP16", true, 0x0000ffff,0x0000ffff, false),
211HOWTO( 6, 0, 2, 32, true, 0, complain_overflow_signed, 0,"DISP32", true, 0xffffffff,0xffffffff, false),
212HOWTO( 7, 0, 4, 64, true, 0, complain_overflow_signed, 0,"DISP64", true, 0xfeedface,0xfeedface, false),
4852416e 213HOWTO( 8, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"GOT_REL", false, 0,0x00000000, false),
c188b0be
DM		 214HOWTO( 9, 0, 1, 16, false, 0, complain_overflow_bitfield,0,"BASE16", false,0xffffffff,0xffffffff, false),
215HOWTO(10, 0, 2, 32, false, 0, complain_overflow_bitfield,0,"BASE32", false,0xffffffff,0xffffffff, false),
cb9461ff
JK		 216{ -1 },
217{ -1 },
218{ -1 },
219{ -1 },
220{ -1 },
221 HOWTO(16, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"JMP_TABLE", false, 0,0x00000000, false),
222{ -1 },
223{ -1 },
224{ -1 },
225{ -1 },
226{ -1 },
227{ -1 },
228{ -1 },
229{ -1 }, { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, { -1 },
230 HOWTO(32, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"RELATIVE", false, 0,0x00000000, false),
231{ -1 },
232{ -1 },
233{ -1 },
234{ -1 },
235{ -1 },
236{ -1 },
237{ -1 },
238 HOWTO(40, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"BASEREL", false, 0,0x00000000, false),
7ed4093a
SC		 239};
240
c188b0be
DM		 241#define TABLE_SIZE(TABLE) (sizeof(TABLE)/sizeof(TABLE[0]))
242
214f8f23 243CONST struct reloc_howto_struct *
8eb5d4be
JK		 244NAME(aout,reloc_type_lookup) (abfd,code)
245 bfd *abfd;
246 bfd_reloc_code_real_type code;
214f8f23
KR		 247{
248#define EXT(i,j) case i: return &howto_table_ext[j]
249#define STD(i,j) case i: return &howto_table_std[j]
250 int ext = obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE;
251 if (code == BFD_RELOC_CTOR)
252 switch (bfd_get_arch_info (abfd)->bits_per_address)
253 {
254 case 32:
255 code = BFD_RELOC_32;
256 break;
ec099b4b
ILT		 257 case 64:
258 code = BFD_RELOC_64;
259 break;
214f8f23
KR		 260 }
261 if (ext)
262 switch (code)
263 {
264 EXT (BFD_RELOC_32, 2);
265 EXT (BFD_RELOC_HI22, 8);
266 EXT (BFD_RELOC_LO10, 11);
267 EXT (BFD_RELOC_32_PCREL_S2, 6);
c188b0be 268 EXT (BFD_RELOC_SPARC_WDISP22, 7);
ec099b4b
ILT		 269 EXT (BFD_RELOC_SPARC13, 10);
270 EXT (BFD_RELOC_SPARC_BASE13, 15);
a99c3d70 271 default: return (CONST struct reloc_howto_struct *) 0;
214f8f23
KR		 272 }
273 else
274 /* std relocs */
275 switch (code)
276 {
277 STD (BFD_RELOC_16, 1);
278 STD (BFD_RELOC_32, 2);
279 STD (BFD_RELOC_8_PCREL, 4);
280 STD (BFD_RELOC_16_PCREL, 5);
281 STD (BFD_RELOC_32_PCREL, 6);
c188b0be
DM		 282 STD (BFD_RELOC_16_BASEREL, 9);
283 STD (BFD_RELOC_32_BASEREL, 10);
a99c3d70 284 default: return (CONST struct reloc_howto_struct *) 0;
214f8f23 285 }
214f8f23 286}
7ed4093a 287
4e41b5aa
SC		 288/*
289SUBSECTION
4c3721d5 290 Internal entry points
4e41b5aa
SC		 291
292DESCRIPTION
c188b0be 293 @file{aoutx.h} exports several routines for accessing the
4e41b5aa
SC		 294 contents of an a.out file, which are gathered and exported in
295 turn by various format specific files (eg sunos.c).
296
6f715d66
SC		 297*/
298
4e41b5aa
SC		 299/*
300FUNCTION
c188b0be 301 aout_@var{size}_swap_exec_header_in
4e41b5aa 302
fa2b89f1 303SYNOPSIS
c188b0be 304 void aout_@var{size}_swap_exec_header_in,
4e41b5aa
SC		 305 (bfd *abfd,
306 struct external_exec *raw_bytes,
307 struct internal_exec *execp);
c188b0be
DM		 308
309DESCRIPTION
310 Swap the information in an executable header @var{raw_bytes} taken
311 from a raw byte stream memory image into the internal exec header
312 structure @var{execp}.
6f715d66 313*/
c188b0be 314
34dd8ba3 315#ifndef NAME_swap_exec_header_in
7ed4093a 316void
8eb5d4be
JK		 317NAME(aout,swap_exec_header_in) (abfd, raw_bytes, execp)
318 bfd *abfd;
319 struct external_exec *raw_bytes;
320 struct internal_exec *execp;
7ed4093a
SC		 321{
322 struct external_exec *bytes = (struct external_exec *)raw_bytes;
323
55c0061e
FF		 324 /* The internal_exec structure has some fields that are unused in this
325 configuration (IE for i960), so ensure that all such uninitialized
326 fields are zero'd out. There are places where two of these structs
327 are memcmp'd, and thus the contents do matter. */
68241b2b 328 memset ((PTR) execp, 0, sizeof (struct internal_exec));
7ed4093a
SC		 329 /* Now fill in fields in the execp, from the bytes in the raw data. */
330 execp->a_info = bfd_h_get_32 (abfd, bytes->e_info);
331 execp->a_text = GET_WORD (abfd, bytes->e_text);
332 execp->a_data = GET_WORD (abfd, bytes->e_data);
333 execp->a_bss = GET_WORD (abfd, bytes->e_bss);
334 execp->a_syms = GET_WORD (abfd, bytes->e_syms);
335 execp->a_entry = GET_WORD (abfd, bytes->e_entry);
336 execp->a_trsize = GET_WORD (abfd, bytes->e_trsize);
337 execp->a_drsize = GET_WORD (abfd, bytes->e_drsize);
338}
34dd8ba3
JG		 339#define NAME_swap_exec_header_in NAME(aout,swap_exec_header_in)
340#endif
7ed4093a 341
4e41b5aa
SC		 342/*
343FUNCTION
c188b0be 344 aout_@var{size}_swap_exec_header_out
4e41b5aa 345
fa2b89f1 346SYNOPSIS
c188b0be 347 void aout_@var{size}_swap_exec_header_out
6f715d66
SC		 348 (bfd *abfd,
349 struct internal_exec *execp,
4e41b5aa 350 struct external_exec *raw_bytes);
c188b0be
DM		 351
352DESCRIPTION
353 Swap the information in an internal exec header structure
354 @var{execp} into the buffer @var{raw_bytes} ready for writing to disk.
6f715d66 355*/
7ed4093a 356void
8eb5d4be
JK		 357NAME(aout,swap_exec_header_out) (abfd, execp, raw_bytes)
358 bfd *abfd;
359 struct internal_exec *execp;
360 struct external_exec *raw_bytes;
7ed4093a
SC		 361{
362 struct external_exec *bytes = (struct external_exec *)raw_bytes;
363
364 /* Now fill in fields in the raw data, from the fields in the exec struct. */
365 bfd_h_put_32 (abfd, execp->a_info , bytes->e_info);
366 PUT_WORD (abfd, execp->a_text , bytes->e_text);
367 PUT_WORD (abfd, execp->a_data , bytes->e_data);
368 PUT_WORD (abfd, execp->a_bss , bytes->e_bss);
369 PUT_WORD (abfd, execp->a_syms , bytes->e_syms);
370 PUT_WORD (abfd, execp->a_entry , bytes->e_entry);
371 PUT_WORD (abfd, execp->a_trsize, bytes->e_trsize);
372 PUT_WORD (abfd, execp->a_drsize, bytes->e_drsize);
373}
374
ec6b18c4 375/* Make all the section for an a.out file. */
7ed4093a 376
ec6b18c4
ILT		 377boolean
378NAME(aout,make_sections) (abfd)
379 bfd *abfd;
380{
381 if (obj_textsec (abfd) == (asection *) NULL
382 && bfd_make_section (abfd, ".text") == (asection *) NULL)
383 return false;
384 if (obj_datasec (abfd) == (asection *) NULL
385 && bfd_make_section (abfd, ".data") == (asection *) NULL)
386 return false;
387 if (obj_bsssec (abfd) == (asection *) NULL
388 && bfd_make_section (abfd, ".bss") == (asection *) NULL)
389 return false;
390 return true;
391}
6f715d66 392
4e41b5aa
SC		 393/*
394FUNCTION
c188b0be 395 aout_@var{size}_some_aout_object_p
6f715d66 396
fa2b89f1 397SYNOPSIS
2f3508ad 398 const bfd_target *aout_@var{size}_some_aout_object_p
6f715d66 399 (bfd *abfd,
2f3508ad 400 const bfd_target *(*callback_to_real_object_p)());
c188b0be
DM		 401
402DESCRIPTION
403 Some a.out variant thinks that the file open in @var{abfd}
404 checking is an a.out file. Do some more checking, and set up
405 for access if it really is. Call back to the calling
406 environment's "finish up" function just before returning, to
407 handle any last-minute setup.
6f715d66 408*/
c188b0be 409
2f3508ad 410const bfd_target *
8eb5d4be
JK		 411NAME(aout,some_aout_object_p) (abfd, execp, callback_to_real_object_p)
412 bfd *abfd;
413 struct internal_exec *execp;
2f3508ad 414 const bfd_target *(*callback_to_real_object_p) PARAMS ((bfd *));
7ed4093a 415{
214f8f23 416 struct aout_data_struct *rawptr, *oldrawptr;
2f3508ad 417 const bfd_target *result;
7ed4093a 418
6db82ea7 419 rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, sizeof (struct aout_data_struct ));
7ed4093a 420 if (rawptr == NULL) {
68241b2b 421 bfd_set_error (bfd_error_no_memory);
7ed4093a
SC		 422 return 0;
423 }
424
214f8f23 425 oldrawptr = abfd->tdata.aout_data;
6db82ea7 426 abfd->tdata.aout_data = rawptr;
ebd24135
ILT		 427
428 /* Copy the contents of the old tdata struct.
429 In particular, we want the subformat, since for hpux it was set in
430 hp300hpux.c:swap_exec_header_in and will be used in
431 hp300hpux.c:callback. */
432 if (oldrawptr != NULL)
433 *abfd->tdata.aout_data = *oldrawptr;
434
6db82ea7
SC		 435 abfd->tdata.aout_data->a.hdr = &rawptr->e;
436 *(abfd->tdata.aout_data->a.hdr) = *execp; /* Copy in the internal_exec struct */
437 execp = abfd->tdata.aout_data->a.hdr;
7ed4093a
SC		 438
439 /* Set the file flags */
440 abfd->flags = NO_FLAGS;
441 if (execp->a_drsize || execp->a_trsize)
442 abfd->flags |= HAS_RELOC;
e6e265ce 443 /* Setting of EXEC_P has been deferred to the bottom of this function */
c188b0be 444 if (execp->a_syms)
7ed4093a 445 abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS;
e68de5d5
ILT		 446 if (N_DYNAMIC(*execp))
447 abfd->flags |= DYNAMIC;
7ed4093a 448
ce07dd7c
KR		 449 if (N_MAGIC (*execp) == ZMAGIC)
450 {
f5419a59
ILT		 451 abfd->flags |= D_PAGED | WP_TEXT;
452 adata (abfd).magic = z_magic;
453 }
454 else if (N_MAGIC (*execp) == QMAGIC)
455 {
456 abfd->flags |= D_PAGED | WP_TEXT;
457 adata (abfd).magic = z_magic;
458 adata (abfd).subformat = q_magic_format;
ce07dd7c
KR		 459 }
460 else if (N_MAGIC (*execp) == NMAGIC)
461 {
462 abfd->flags |= WP_TEXT;
f5419a59 463 adata (abfd).magic = n_magic;
ce07dd7c 464 }
7b024321
ILT		 465 else if (N_MAGIC (*execp) == OMAGIC
466 || N_MAGIC (*execp) == BMAGIC)
f5419a59 467 adata (abfd).magic = o_magic;
ce07dd7c 468 else
f5419a59
ILT		 469 {
470 /* Should have been checked with N_BADMAG before this routine
471 was called. */
472 abort ();
473 }
7ed4093a
SC		 474
475 bfd_get_start_address (abfd) = execp->a_entry;
476
477 obj_aout_symbols (abfd) = (aout_symbol_type *)NULL;
478 bfd_get_symcount (abfd) = execp->a_syms / sizeof (struct external_nlist);
479
7ed4093a
SC		 480 /* The default relocation entry size is that of traditional V7 Unix. */
481 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
482
7b02b4ed
JG		 483 /* The default symbol entry size is that of traditional Unix. */
484 obj_symbol_entry_size (abfd) = EXTERNAL_NLIST_SIZE;
485
728472f1
ILT		 486 obj_aout_external_syms (abfd) = NULL;
487 obj_aout_external_strings (abfd) = NULL;
488 obj_aout_sym_hashes (abfd) = NULL;
489
ec6b18c4
ILT		 490 if (! NAME(aout,make_sections) (abfd))
491 return NULL;
7ed4093a 492
6db82ea7
SC		 493 obj_datasec (abfd)->_raw_size = execp->a_data;
494 obj_bsssec (abfd)->_raw_size = execp->a_bss;
7ed4093a 495
0ee75d02 496 obj_textsec (abfd)->flags =
11676adc 497 (execp->a_trsize != 0
0ee75d02
ILT		 498 ? (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_RELOC)
499 : (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS));
500 obj_datasec (abfd)->flags =
11676adc 501 (execp->a_drsize != 0
0ee75d02
ILT		 502 ? (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS | SEC_RELOC)
503 : (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS));
7ed4093a
SC		 504 obj_bsssec (abfd)->flags = SEC_ALLOC;
505
506#ifdef THIS_IS_ONLY_DOCUMENTATION
98d43107
JG		 507 /* The common code can't fill in these things because they depend
508 on either the start address of the text segment, the rounding
9783e04a 509 up of virtual addresses between segments, or the starting file
98d43107
JG		 510 position of the text segment -- all of which varies among different
511 versions of a.out. */
512
c188b0be 513 /* Call back to the format-dependent code to fill in the rest of the
7ed4093a
SC		 514 fields and do any further cleanup. Things that should be filled
515 in by the callback: */
516
517 struct exec *execp = exec_hdr (abfd);
518
98d43107 519 obj_textsec (abfd)->size = N_TXTSIZE(*execp);
6db82ea7 520 obj_textsec (abfd)->raw_size = N_TXTSIZE(*execp);
98d43107
JG		 521 /* data and bss are already filled in since they're so standard */
522
7ed4093a 523 /* The virtual memory addresses of the sections */
7ed4093a 524 obj_textsec (abfd)->vma = N_TXTADDR(*execp);
98d43107
JG		 525 obj_datasec (abfd)->vma = N_DATADDR(*execp);
526 obj_bsssec (abfd)->vma = N_BSSADDR(*execp);
7ed4093a
SC		 527
528 /* The file offsets of the sections */
529 obj_textsec (abfd)->filepos = N_TXTOFF(*execp);
530 obj_datasec (abfd)->filepos = N_DATOFF(*execp);
531
532 /* The file offsets of the relocation info */
533 obj_textsec (abfd)->rel_filepos = N_TRELOFF(*execp);
534 obj_datasec (abfd)->rel_filepos = N_DRELOFF(*execp);
535
536 /* The file offsets of the string table and symbol table. */
537 obj_str_filepos (abfd) = N_STROFF (*execp);
538 obj_sym_filepos (abfd) = N_SYMOFF (*execp);
539
7ed4093a
SC		 540 /* Determine the architecture and machine type of the object file. */
541 switch (N_MACHTYPE (*exec_hdr (abfd))) {
542 default:
543 abfd->obj_arch = bfd_arch_obscure;
544 break;
545 }
546
7b02b4ed
JG		 547 adata(abfd)->page_size = PAGE_SIZE;
548 adata(abfd)->segment_size = SEGMENT_SIZE;
549 adata(abfd)->exec_bytes_size = EXEC_BYTES_SIZE;
550
7ed4093a
SC		 551 return abfd->xvec;
552
553 /* The architecture is encoded in various ways in various a.out variants,
554 or is not encoded at all in some of them. The relocation size depends
555 on the architecture and the a.out variant. Finally, the return value
556 is the bfd_target vector in use. If an error occurs, return zero and
557 set bfd_error to the appropriate error code.
c188b0be 558
7ed4093a
SC		 559 Formats such as b.out, which have additional fields in the a.out
560 header, should cope with them in this callback as well. */
561#endif /* DOCUMENTATION */
562
e6e265ce
JG		 563 result = (*callback_to_real_object_p)(abfd);
564
2aaaab7c 565#ifdef STAT_FOR_EXEC
f42fe159
ILT		 566 /* The original heuristic doesn't work in some important cases. The
567 * a.out file has no information about the text start address. For
568 * files (like kernels) linked to non-standard addresses (ld -Ttext
569 * nnn) the entry point may not be between the default text start
570 * (obj_textsec(abfd)->vma) and (obj_textsec(abfd)->vma) + text size
571 * This is not just a mach issue. Many kernels are loaded at non
572 * standard addresses.
573 */
11676adc 574 {
f42fe159
ILT		 575 struct stat stat_buf;
576 if (abfd->iostream
577 && (fstat(fileno((FILE *) (abfd->iostream)), &stat_buf) == 0)
578 && ((stat_buf.st_mode & 0111) != 0))
11676adc
SS		 579 abfd->flags |= EXEC_P;
580 }
2aaaab7c 581#else /* ! defined (STAT_FOR_EXEC) */
e6e265ce
JG		 582 /* Now that the segment addresses have been worked out, take a better
583 guess at whether the file is executable. If the entry point
584 is within the text segment, assume it is. (This makes files
585 executable even if their entry point address is 0, as long as
c188b0be 586 their text starts at zero.)
e6e265ce
JG		 587
588 At some point we should probably break down and stat the file and
589 declare it executable if (one of) its 'x' bits are on... */
590 if ((execp->a_entry >= obj_textsec(abfd)->vma) &&
6db82ea7 591 (execp->a_entry < obj_textsec(abfd)->vma + obj_textsec(abfd)->_raw_size))
e6e265ce 592 abfd->flags |= EXEC_P;
2aaaab7c 593#endif /* ! defined (STAT_FOR_EXEC) */
214f8f23
KR		 594 if (result)
595 {
1f29e30b 596#if 0 /* These should be set correctly anyways. */
214f8f23
KR		 597 abfd->sections = obj_textsec (abfd);
598 obj_textsec (abfd)->next = obj_datasec (abfd);
599 obj_datasec (abfd)->next = obj_bsssec (abfd);
1f29e30b 600#endif
214f8f23
KR		 601 }
602 else
603 {
604 free (rawptr);
605 abfd->tdata.aout_data = oldrawptr;
606 }
e6e265ce 607 return result;
7ed4093a
SC		 608}
609
4e41b5aa
SC		 610/*
611FUNCTION
c188b0be 612 aout_@var{size}_mkobject
6f715d66 613
fa2b89f1 614SYNOPSIS
c188b0be
DM		 615 boolean aout_@var{size}_mkobject, (bfd *abfd);
616
617DESCRIPTION
618 Initialize BFD @var{abfd} for use with a.out files.
6f715d66 619*/
7ed4093a
SC		 620
621boolean
8eb5d4be
JK		 622NAME(aout,mkobject) (abfd)
623 bfd *abfd;
7ed4093a 624{
6db82ea7 625 struct aout_data_struct *rawptr;
7ed4093a 626
68241b2b 627 bfd_set_error (bfd_error_system_call);
7ed4093a
SC		 628
629 /* Use an intermediate variable for clarity */
2e235c93 630 rawptr = (struct aout_data_struct *)bfd_zalloc (abfd, sizeof (struct aout_data_struct ));
c188b0be 631
7ed4093a 632 if (rawptr == NULL) {
68241b2b 633 bfd_set_error (bfd_error_no_memory);
7ed4093a
SC		 634 return false;
635 }
c188b0be 636
6db82ea7 637 abfd->tdata.aout_data = rawptr;
7ed4093a 638 exec_hdr (abfd) = &(rawptr->e);
c188b0be 639
7ed4093a
SC		 640 obj_textsec (abfd) = (asection *)NULL;
641 obj_datasec (abfd) = (asection *)NULL;
642 obj_bsssec (abfd) = (asection *)NULL;
c188b0be 643
7ed4093a
SC		 644 return true;
645}
646
6f715d66 647
4e41b5aa
SC		 648/*
649FUNCTION
c188b0be
DM		 650 aout_@var{size}_machine_type
651
652SYNOPSIS
653 enum machine_type aout_@var{size}_machine_type
654 (enum bfd_architecture arch,
655 unsigned long machine));
6f715d66 656
4e41b5aa
SC		 657DESCRIPTION
658 Keep track of machine architecture and machine type for
c188b0be
DM		 659 a.out's. Return the <<machine_type>> for a particular
660 architecture and machine, or <<M_UNKNOWN>> if that exact architecture
661 and machine can't be represented in a.out format.
7ed4093a 662
4e41b5aa 663 If the architecture is understood, machine type 0 (default)
c188b0be 664 is always understood.
6f715d66 665*/
7ed4093a
SC		 666
667enum machine_type
9ae74960 668NAME(aout,machine_type) (arch, machine, unknown)
8eb5d4be
JK		 669 enum bfd_architecture arch;
670 unsigned long machine;
9ae74960 671 boolean *unknown;
7ed4093a
SC		 672{
673 enum machine_type arch_flags;
c188b0be 674
7ed4093a 675 arch_flags = M_UNKNOWN;
9ae74960 676 *unknown = true;
c188b0be 677
7ed4093a
SC		 678 switch (arch) {
679 case bfd_arch_sparc:
680 if (machine == 0) arch_flags = M_SPARC;
681 break;
c188b0be 682
7ed4093a
SC		 683 case bfd_arch_m68k:
684 switch (machine) {
685 case 0: arch_flags = M_68010; break;
9ae74960 686 case 68000: arch_flags = M_UNKNOWN; *unknown = false; break;
7ed4093a
SC		 687 case 68010: arch_flags = M_68010; break;
688 case 68020: arch_flags = M_68020; break;
689 default: arch_flags = M_UNKNOWN; break;
690 }
691 break;
c188b0be 692
7ed4093a
SC		 693 case bfd_arch_i386:
694 if (machine == 0) arch_flags = M_386;
695 break;
c188b0be 696
7ed4093a
SC		 697 case bfd_arch_a29k:
698 if (machine == 0) arch_flags = M_29K;
699 break;
c188b0be 700
5cd3dcff
KR		 701 case bfd_arch_mips:
702 switch (machine) {
703 case 0:
704 case 2000:
705 case 3000: arch_flags = M_MIPS1; break;
706 case 4000:
707 case 4400:
708 case 6000: arch_flags = M_MIPS2; break;
709 default: arch_flags = M_UNKNOWN; break;
710 }
711 break;
712
f42fe159
ILT		 713 case bfd_arch_ns32k:
714 switch (machine) {
715 case 0: arch_flags = M_NS32532; break;
716 case 32032: arch_flags = M_NS32032; break;
717 case 32532: arch_flags = M_NS32532; break;
718 default: arch_flags = M_UNKNOWN; break;
719 }
720 break;
721
7ed4093a
SC		 722 default:
723 arch_flags = M_UNKNOWN;
7ed4093a 724 }
9ae74960
ILT		 725
726 if (arch_flags != M_UNKNOWN)
727 *unknown = false;
728
7ed4093a
SC		 729 return arch_flags;
730}
731
9e2dad8e 732
4e41b5aa
SC		 733/*
734FUNCTION
c188b0be 735 aout_@var{size}_set_arch_mach
6f715d66 736
fa2b89f1 737SYNOPSIS
c188b0be 738 boolean aout_@var{size}_set_arch_mach,
6f715d66 739 (bfd *,
c188b0be 740 enum bfd_architecture arch,
6f715d66 741 unsigned long machine));
c188b0be
DM		 742
743DESCRIPTION
744 Set the architecture and the machine of the BFD @var{abfd} to the
745 values @var{arch} and @var{machine}. Verify that @var{abfd}'s format
746 can support the architecture required.
6f715d66
SC		 747*/
748
7ed4093a 749boolean
8eb5d4be
JK		 750NAME(aout,set_arch_mach) (abfd, arch, machine)
751 bfd *abfd;
752 enum bfd_architecture arch;
753 unsigned long machine;
7ed4093a 754{
2e235c93
ILT		 755 if (! bfd_default_set_arch_mach (abfd, arch, machine))
756 return false;
757
9ae74960
ILT		 758 if (arch != bfd_arch_unknown)
759 {
760 boolean unknown;
761
762 NAME(aout,machine_type) (arch, machine, &unknown);
763 if (unknown)
764 return false;
765 }
ce07dd7c 766
214f8f23
KR		 767 /* Determine the size of a relocation entry */
768 switch (arch) {
769 case bfd_arch_sparc:
770 case bfd_arch_a29k:
5cd3dcff 771 case bfd_arch_mips:
214f8f23
KR		 772 obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE;
773 break;
774 default:
775 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
776 break;
777 }
778
2768b3f7 779 return (*aout_backend_info(abfd)->set_sizes) (abfd);
7ed4093a 780}
7ed4093a 781
4c3721d5
ILT		 782static void
783adjust_o_magic (abfd, execp)
784 bfd *abfd;
785 struct internal_exec *execp;
786{
787 file_ptr pos = adata (abfd).exec_bytes_size;
788 bfd_vma vma = 0;
789 int pad = 0;
790
791 /* Text. */
792 obj_textsec(abfd)->filepos = pos;
793 pos += obj_textsec(abfd)->_raw_size;
794 vma += obj_textsec(abfd)->_raw_size;
795
796 /* Data. */
797 if (!obj_datasec(abfd)->user_set_vma)
798 {
799#if 0 /* ?? Does alignment in the file image really matter? */
800 pad = align_power (vma, obj_datasec(abfd)->alignment_power) - vma;
801#endif
802 obj_textsec(abfd)->_raw_size += pad;
803 pos += pad;
804 vma += pad;
805 obj_datasec(abfd)->vma = vma;
806 }
807 obj_datasec(abfd)->filepos = pos;
808 pos += obj_datasec(abfd)->_raw_size;
809 vma += obj_datasec(abfd)->_raw_size;
810
811 /* BSS. */
812 if (!obj_bsssec(abfd)->user_set_vma)
813 {
814#if 0
815 pad = align_power (vma, obj_bsssec(abfd)->alignment_power) - vma;
816#endif
817 obj_datasec(abfd)->_raw_size += pad;
818 pos += pad;
819 vma += pad;
820 obj_bsssec(abfd)->vma = vma;
821 }
f4945271
ILT		 822 else
823 {
824 /* The VMA of the .bss section is set by the the VMA of the
825 .data section plus the size of the .data section. We may
826 need to add padding bytes to make this true. */
827 pad = obj_bsssec (abfd)->vma - vma;
828 if (pad > 0)
829 {
830 obj_datasec (abfd)->_raw_size += pad;
831 pos += pad;
832 }
833 }
4c3721d5
ILT		 834 obj_bsssec(abfd)->filepos = pos;
835
836 /* Fix up the exec header. */
837 execp->a_text = obj_textsec(abfd)->_raw_size;
838 execp->a_data = obj_datasec(abfd)->_raw_size;
839 execp->a_bss = obj_bsssec(abfd)->_raw_size;
840 N_SET_MAGIC (*execp, OMAGIC);
841}
842
843static void
844adjust_z_magic (abfd, execp)
845 bfd *abfd;
846 struct internal_exec *execp;
847{
848 bfd_size_type data_pad, text_pad;
849 file_ptr text_end;
850 CONST struct aout_backend_data *abdp;
851 int ztih; /* Nonzero if text includes exec header. */
4c3721d5
ILT		 852
853 abdp = aout_backend_info (abfd);
854
855 /* Text. */
0630aba5
ILT		 856 ztih = (abdp != NULL
857 && (abdp->text_includes_header
858 || obj_aout_subformat (abfd) == q_magic_format));
4c3721d5
ILT		 859 obj_textsec(abfd)->filepos = (ztih
860 ? adata(abfd).exec_bytes_size
0630aba5 861 : adata(abfd).zmagic_disk_block_size);
4c3721d5 862 if (! obj_textsec(abfd)->user_set_vma)
e1f99f60
ILT		 863 {
864 /* ?? Do we really need to check for relocs here? */
865 obj_textsec(abfd)->vma = ((abfd->flags & HAS_RELOC)
866 ? 0
867 : (ztih
868 ? (abdp->default_text_vma
869 + adata(abfd).exec_bytes_size)
870 : abdp->default_text_vma));
871 text_pad = 0;
872 }
873 else
874 {
875 /* The .text section is being loaded at an unusual address. We
876 may need to pad it such that the .data section starts at a page
877 boundary. */
878 if (ztih)
879 text_pad = ((obj_textsec (abfd)->filepos - obj_textsec (abfd)->vma)
880 & (adata (abfd).page_size - 1));
881 else
882 text_pad = ((- obj_textsec (abfd)->vma)
883 & (adata (abfd).page_size - 1));
884 }
885
4c3721d5 886 /* Find start of data. */
0630aba5
ILT		 887 if (ztih)
888 {
889 text_end = obj_textsec (abfd)->filepos + obj_textsec (abfd)->_raw_size;
e1f99f60 890 text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end;
0630aba5
ILT		 891 }
892 else
893 {
894 /* Note that if page_size == zmagic_disk_block_size, then
895 filepos == page_size, and this case is the same as the ztih
896 case. */
897 text_end = obj_textsec (abfd)->_raw_size;
e1f99f60 898 text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end;
0630aba5
ILT		 899 text_end += obj_textsec (abfd)->filepos;
900 }
4c3721d5
ILT		 901 obj_textsec(abfd)->_raw_size += text_pad;
902 text_end += text_pad;
903
904 /* Data. */
905 if (!obj_datasec(abfd)->user_set_vma)
906 {
907 bfd_vma vma;
908 vma = obj_textsec(abfd)->vma + obj_textsec(abfd)->_raw_size;
909 obj_datasec(abfd)->vma = BFD_ALIGN (vma, adata(abfd).segment_size);
910 }
4c3721d5
ILT		 911 if (abdp && abdp->zmagic_mapped_contiguous)
912 {
913 text_pad = (obj_datasec(abfd)->vma
914 - obj_textsec(abfd)->vma
915 - obj_textsec(abfd)->_raw_size);
916 obj_textsec(abfd)->_raw_size += text_pad;
917 }
918 obj_datasec(abfd)->filepos = (obj_textsec(abfd)->filepos
919 + obj_textsec(abfd)->_raw_size);
920
921 /* Fix up exec header while we're at it. */
922 execp->a_text = obj_textsec(abfd)->_raw_size;
923 if (ztih && (!abdp || (abdp && !abdp->exec_header_not_counted)))
924 execp->a_text += adata(abfd).exec_bytes_size;
f5419a59
ILT		 925 if (obj_aout_subformat (abfd) == q_magic_format)
926 N_SET_MAGIC (*execp, QMAGIC);
927 else
928 N_SET_MAGIC (*execp, ZMAGIC);
5330499f 929
4c3721d5 930 /* Spec says data section should be rounded up to page boundary. */
4c3721d5
ILT		 931 obj_datasec(abfd)->_raw_size
932 = align_power (obj_datasec(abfd)->_raw_size,
933 obj_bsssec(abfd)->alignment_power);
934 execp->a_data = BFD_ALIGN (obj_datasec(abfd)->_raw_size,
935 adata(abfd).page_size);
936 data_pad = execp->a_data - obj_datasec(abfd)->_raw_size;
937
938 /* BSS. */
939 if (!obj_bsssec(abfd)->user_set_vma)
940 obj_bsssec(abfd)->vma = (obj_datasec(abfd)->vma
941 + obj_datasec(abfd)->_raw_size);
5330499f
DM		 942 /* If the BSS immediately follows the data section and extra space
943 in the page is left after the data section, fudge data
944 in the header so that the bss section looks smaller by that
945 amount. We'll start the bss section there, and lie to the OS.
946 (Note that a linker script, as well as the above assignment,
947 could have explicitly set the BSS vma to immediately follow
948 the data section.) */
949 if (align_power (obj_bsssec(abfd)->vma, obj_bsssec(abfd)->alignment_power)
950 == obj_datasec(abfd)->vma + obj_datasec(abfd)->_raw_size)
951 execp->a_bss = (data_pad > obj_bsssec(abfd)->_raw_size) ? 0 :
952 obj_bsssec(abfd)->_raw_size - data_pad;
953 else
954 execp->a_bss = obj_bsssec(abfd)->_raw_size;
4c3721d5
ILT		 955}
956
957static void
958adjust_n_magic (abfd, execp)
959 bfd *abfd;
960 struct internal_exec *execp;
961{
962 file_ptr pos = adata(abfd).exec_bytes_size;
963 bfd_vma vma = 0;
964 int pad;
965
966 /* Text. */
967 obj_textsec(abfd)->filepos = pos;
968 if (!obj_textsec(abfd)->user_set_vma)
969 obj_textsec(abfd)->vma = vma;
970 else
971 vma = obj_textsec(abfd)->vma;
972 pos += obj_textsec(abfd)->_raw_size;
973 vma += obj_textsec(abfd)->_raw_size;
974
975 /* Data. */
976 obj_datasec(abfd)->filepos = pos;
977 if (!obj_datasec(abfd)->user_set_vma)
978 obj_datasec(abfd)->vma = BFD_ALIGN (vma, adata(abfd).segment_size);
979 vma = obj_datasec(abfd)->vma;
980
981 /* Since BSS follows data immediately, see if it needs alignment. */
982 vma += obj_datasec(abfd)->_raw_size;
983 pad = align_power (vma, obj_bsssec(abfd)->alignment_power) - vma;
984 obj_datasec(abfd)->_raw_size += pad;
985 pos += obj_datasec(abfd)->_raw_size;
986
987 /* BSS. */
988 if (!obj_bsssec(abfd)->user_set_vma)
989 obj_bsssec(abfd)->vma = vma;
990 else
991 vma = obj_bsssec(abfd)->vma;
992
993 /* Fix up exec header. */
994 execp->a_text = obj_textsec(abfd)->_raw_size;
995 execp->a_data = obj_datasec(abfd)->_raw_size;
996 execp->a_bss = obj_bsssec(abfd)->_raw_size;
997 N_SET_MAGIC (*execp, NMAGIC);
998}
999
ce07dd7c 1000boolean
8eb5d4be
JK		 1001NAME(aout,adjust_sizes_and_vmas) (abfd, text_size, text_end)
1002 bfd *abfd;
1003 bfd_size_type *text_size;
1004 file_ptr *text_end;
ce07dd7c
KR		 1005{
1006 struct internal_exec *execp = exec_hdr (abfd);
4c3721d5 1007
ec6b18c4
ILT		 1008 if (! NAME(aout,make_sections) (abfd))
1009 return false;
1010
f5419a59
ILT		 1011 if (adata(abfd).magic != undecided_magic)
1012 return true;
4c3721d5 1013
c188b0be 1014 obj_textsec(abfd)->_raw_size =
ce07dd7c
KR		 1015 align_power(obj_textsec(abfd)->_raw_size,
1016 obj_textsec(abfd)->alignment_power);
1017
1018 *text_size = obj_textsec (abfd)->_raw_size;
1019 /* Rule (heuristic) for when to pad to a new page. Note that there
4c3721d5
ILT		 1020 are (at least) two ways demand-paged (ZMAGIC) files have been
1021 handled. Most Berkeley-based systems start the text segment at
1022 (PAGE_SIZE). However, newer versions of SUNOS start the text
1023 segment right after the exec header; the latter is counted in the
1024 text segment size, and is paged in by the kernel with the rest of
1025 the text. */
ce07dd7c
KR		 1026
1027 /* This perhaps isn't the right way to do this, but made it simpler for me
1028 to understand enough to implement it. Better would probably be to go
1029 right from BFD flags to alignment/positioning characteristics. But the
1030 old code was sloppy enough about handling the flags, and had enough
1031 other magic, that it was a little hard for me to understand. I think
1032 I understand it better now, but I haven't time to do the cleanup this
1033 minute. */
4c3721d5
ILT		 1034
1035 if (abfd->flags & D_PAGED)
1036 /* Whether or not WP_TEXT is set -- let D_PAGED override. */
4c3721d5
ILT		 1037 adata(abfd).magic = z_magic;
1038 else if (abfd->flags & WP_TEXT)
1039 adata(abfd).magic = n_magic;
1040 else
1041 adata(abfd).magic = o_magic;
ce07dd7c
KR		 1042
1043#ifdef BFD_AOUT_DEBUG /* requires gcc2 */
1044#if __GNUC__ >= 2
1045 fprintf (stderr, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n",
1046 ({ char *str;
1047 switch (adata(abfd).magic) {
1048 case n_magic: str = "NMAGIC"; break;
1049 case o_magic: str = "OMAGIC"; break;
1050 case z_magic: str = "ZMAGIC"; break;
1051 default: abort ();
1052 }
1053 str;
1054 }),
4c3721d5
ILT		 1055 obj_textsec(abfd)->vma, obj_textsec(abfd)->_raw_size,
1056 obj_textsec(abfd)->alignment_power,
1057 obj_datasec(abfd)->vma, obj_datasec(abfd)->_raw_size,
1058 obj_datasec(abfd)->alignment_power,
1059 obj_bsssec(abfd)->vma, obj_bsssec(abfd)->_raw_size,
1060 obj_bsssec(abfd)->alignment_power);
ce07dd7c
KR		 1061#endif
1062#endif
1063
1064 switch (adata(abfd).magic)
1065 {
1066 case o_magic:
4c3721d5 1067 adjust_o_magic (abfd, execp);
ce07dd7c
KR		 1068 break;
1069 case z_magic:
4c3721d5 1070 adjust_z_magic (abfd, execp);
ce07dd7c
KR		 1071 break;
1072 case n_magic:
4c3721d5 1073 adjust_n_magic (abfd, execp);
ce07dd7c
KR		 1074 break;
1075 default:
1076 abort ();
1077 }
4c3721d5 1078
ce07dd7c
KR		 1079#ifdef BFD_AOUT_DEBUG
1080 fprintf (stderr, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n",
4c3721d5
ILT		 1081 obj_textsec(abfd)->vma, obj_textsec(abfd)->_raw_size,
1082 obj_textsec(abfd)->filepos,
1083 obj_datasec(abfd)->vma, obj_datasec(abfd)->_raw_size,
1084 obj_datasec(abfd)->filepos,
ce07dd7c
KR		 1085 obj_bsssec(abfd)->vma, obj_bsssec(abfd)->_raw_size);
1086#endif
4c3721d5 1087
d047d16a 1088 return true;
ce07dd7c
KR		 1089}
1090
4e41b5aa
SC		 1091/*
1092FUNCTION
c188b0be 1093 aout_@var{size}_new_section_hook
4e41b5aa 1094
fa2b89f1 1095SYNOPSIS
c188b0be 1096 boolean aout_@var{size}_new_section_hook,
9e2dad8e
JG		 1097 (bfd *abfd,
1098 asection *newsect));
c188b0be
DM		 1099
1100DESCRIPTION
1101 Called by the BFD in response to a @code{bfd_make_section}
1102 request.
6f715d66 1103*/
7ed4093a 1104boolean
8eb5d4be
JK		 1105NAME(aout,new_section_hook) (abfd, newsect)
1106 bfd *abfd;
1107 asection *newsect;
7ed4093a 1108{
6db82ea7
SC		 1109 /* align to double at least */
1110 newsect->alignment_power = bfd_get_arch_info(abfd)->section_align_power;
3f7607af 1111
c188b0be
DM		 1112
1113 if (bfd_get_format (abfd) == bfd_object)
6db82ea7
SC		 1114 {
1115 if (obj_textsec(abfd) == NULL && !strcmp(newsect->name, ".text")) {
1116 obj_textsec(abfd)= newsect;
e48f985c 1117 newsect->target_index = N_TEXT;
6db82ea7
SC		 1118 return true;
1119 }
c188b0be 1120
6db82ea7
SC		 1121 if (obj_datasec(abfd) == NULL && !strcmp(newsect->name, ".data")) {
1122 obj_datasec(abfd) = newsect;
e48f985c 1123 newsect->target_index = N_DATA;
6db82ea7
SC		 1124 return true;
1125 }
c188b0be 1126
6db82ea7
SC		 1127 if (obj_bsssec(abfd) == NULL && !strcmp(newsect->name, ".bss")) {
1128 obj_bsssec(abfd) = newsect;
e48f985c 1129 newsect->target_index = N_BSS;
6db82ea7
SC		 1130 return true;
1131 }
1132
1133 }
c188b0be 1134
6db82ea7
SC		 1135 /* We allow more than three sections internally */
1136 return true;
7ed4093a
SC		 1137}
1138
1139boolean
8eb5d4be
JK		 1140NAME(aout,set_section_contents) (abfd, section, location, offset, count)
1141 bfd *abfd;
1142 sec_ptr section;
1143 PTR location;
1144 file_ptr offset;
1145 bfd_size_type count;
7ed4093a 1146{
7b02b4ed 1147 file_ptr text_end;
7b02b4ed 1148 bfd_size_type text_size;
ce07dd7c 1149
7ed4093a 1150 if (abfd->output_has_begun == false)
ebd24135
ILT		 1151 {
1152 if (NAME(aout,adjust_sizes_and_vmas) (abfd,
1153 &text_size,
1154 &text_end) == false)
1155 return false;
9e2dad8e 1156 }
12e7087f 1157
7ed4093a 1158 /* regardless, once we know what we're doing, we might as well get going */
c188b0be 1159 if (section != obj_bsssec(abfd))
7ed4093a 1160 {
29e626eb
ILT		 1161 if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0)
1162 return false;
c188b0be 1163
7ed4093a
SC		 1164 if (count) {
1165 return (bfd_write ((PTR)location, 1, count, abfd) == count) ?
1166 true : false;
1167 }
6db82ea7 1168 return true;
7ed4093a
SC		 1169 }
1170 return true;
1171}
1172\f
5c8444f8
ILT		 1173/* Read the external symbols from an a.out file. */
1174
1175static boolean
1176aout_get_external_symbols (abfd)
1177 bfd *abfd;
1178{
1179 if (obj_aout_external_syms (abfd) == (struct external_nlist *) NULL)
1180 {
1181 bfd_size_type count;
1182 struct external_nlist *syms;
1183
1184 count = exec_hdr (abfd)->a_syms / EXTERNAL_NLIST_SIZE;
1185
1186 /* We allocate using malloc to make the values easy to free
1187 later on. If we put them on the obstack it might not be
1188 possible to free them. */
1189 syms = ((struct external_nlist *)
1190 malloc ((size_t) count * EXTERNAL_NLIST_SIZE));
1191 if (syms == (struct external_nlist *) NULL && count != 0)
1192 {
1193 bfd_set_error (bfd_error_no_memory);
1194 return false;
1195 }
1196
1197 if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
1198 || (bfd_read (syms, 1, exec_hdr (abfd)->a_syms, abfd)
1199 != exec_hdr (abfd)->a_syms))
1200 {
1201 free (syms);
1202 return false;
1203 }
1204
1205 obj_aout_external_syms (abfd) = syms;
1206 obj_aout_external_sym_count (abfd) = count;
1207 }
1208
4f019d04
ILT		 1209 if (obj_aout_external_strings (abfd) == NULL
1210 && exec_hdr (abfd)->a_syms != 0)
5c8444f8
ILT		 1211 {
1212 unsigned char string_chars[BYTES_IN_WORD];
1213 bfd_size_type stringsize;
1214 char *strings;
1215
1216 /* Get the size of the strings. */
1217 if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0
1218 || (bfd_read ((PTR) string_chars, BYTES_IN_WORD, 1, abfd)
1219 != BYTES_IN_WORD))
1220 return false;
1221 stringsize = GET_WORD (abfd, string_chars);
1222
1223 strings = (char *) malloc ((size_t) stringsize + 1);
1224 if (strings == NULL)
1225 {
1226 bfd_set_error (bfd_error_no_memory);
1227 return false;
1228 }
1229
1230 /* Skip space for the string count in the buffer for convenience
1231 when using indexes. */
1232 if (bfd_read (strings + BYTES_IN_WORD, 1, stringsize - BYTES_IN_WORD,
1233 abfd)
1234 != stringsize - BYTES_IN_WORD)
1235 {
1236 free (strings);
1237 return false;
1238 }
1239
1afd2380
ILT		 1240 /* Ensure that a zero index yields an empty string. */
1241 strings[0] = '\0';
1242
5c8444f8
ILT		 1243 /* Sanity preservation. */
1244 strings[stringsize] = '\0';
1245
1246 obj_aout_external_strings (abfd) = strings;
1247 obj_aout_external_string_size (abfd) = stringsize;
1248 }
1249
1250 return true;
1251}
1252
4298e311
ILT		 1253/* Translate an a.out symbol into a BFD symbol. The desc, other, type
1254 and symbol->value fields of CACHE_PTR will be set from the a.out
1255 nlist structure. This function is responsible for setting
1256 symbol->flags and symbol->section, and adjusting symbol->value. */
c188b0be 1257
9783e04a 1258static boolean
4298e311
ILT		 1259translate_from_native_sym_flags (abfd, cache_ptr)
1260 bfd *abfd;
1261 aout_symbol_type *cache_ptr;
9e2dad8e 1262{
4298e311
ILT		 1263 flagword visible;
1264
1265 if ((cache_ptr->type & N_STAB) != 0
1266 || cache_ptr->type == N_FN)
1267 {
1268 asection *sec;
1269
1270 /* This is a debugging symbol. */
1271
1272 cache_ptr->symbol.flags = BSF_DEBUGGING;
1273
1274 /* Work out the symbol section. */
1275 switch (cache_ptr->type & N_TYPE)
1276 {
1277 case N_TEXT:
1278 case N_FN:
1279 sec = obj_textsec (abfd);
1280 break;
1281 case N_DATA:
1282 sec = obj_datasec (abfd);
1283 break;
1284 case N_BSS:
1285 sec = obj_bsssec (abfd);
1286 break;
1287 default:
1288 case N_ABS:
4587b578 1289 sec = bfd_abs_section_ptr;
4298e311
ILT		 1290 break;
1291 }
1292
1293 cache_ptr->symbol.section = sec;
1294 cache_ptr->symbol.value -= sec->vma;
1295
1296 return true;
1297 }
1298
1299 /* Get the default visibility. This does not apply to all types, so
1300 we just hold it in a local variable to use if wanted. */
1301 if ((cache_ptr->type & N_EXT) == 0)
1302 visible = BSF_LOCAL;
1303 else
1304 visible = BSF_GLOBAL;
1305
1306 switch (cache_ptr->type)
6db82ea7 1307 {
4298e311
ILT		 1308 default:
1309 case N_ABS: case N_ABS | N_EXT:
4587b578 1310 cache_ptr->symbol.section = bfd_abs_section_ptr;
4298e311
ILT		 1311 cache_ptr->symbol.flags = visible;
1312 break;
1313
1314 case N_UNDF | N_EXT:
1315 if (cache_ptr->symbol.value != 0)
1316 {
1317 /* This is a common symbol. */
1318 cache_ptr->symbol.flags = BSF_GLOBAL;
4587b578 1319 cache_ptr->symbol.section = bfd_com_section_ptr;
4298e311
ILT		 1320 }
1321 else
1322 {
1323 cache_ptr->symbol.flags = 0;
4587b578 1324 cache_ptr->symbol.section = bfd_und_section_ptr;
4298e311
ILT		 1325 }
1326 break;
1327
1328 case N_TEXT: case N_TEXT | N_EXT:
1329 cache_ptr->symbol.section = obj_textsec (abfd);
1330 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1331 cache_ptr->symbol.flags = visible;
1332 break;
1333
2cd086e3
ILT		 1334 /* N_SETV symbols used to represent set vectors placed in the
1335 data section. They are no longer generated. Theoretically,
1336 it was possible to extract the entries and combine them with
1337 new ones, although I don't know if that was ever actually
1338 done. Unless that feature is restored, treat them as data
1339 symbols. */
1340 case N_SETV: case N_SETV | N_EXT:
4298e311
ILT		 1341 case N_DATA: case N_DATA | N_EXT:
1342 cache_ptr->symbol.section = obj_datasec (abfd);
1343 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1344 cache_ptr->symbol.flags = visible;
1345 break;
1346
1347 case N_BSS: case N_BSS | N_EXT:
1348 cache_ptr->symbol.section = obj_bsssec (abfd);
1349 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1350 cache_ptr->symbol.flags = visible;
1351 break;
1352
964affdc
DM		 1353 case N_SETA: case N_SETA | N_EXT:
1354 case N_SETT: case N_SETT | N_EXT:
1355 case N_SETD: case N_SETD | N_EXT:
1356 case N_SETB: case N_SETB | N_EXT:
ebd24135 1357 {
ebd24135 1358 asection *section;
4298e311 1359 arelent_chain *reloc;
ebd24135 1360 asection *into_section;
9783e04a 1361
4298e311
ILT		 1362 /* This is a set symbol. The name of the symbol is the name
1363 of the set (e.g., __CTOR_LIST__). The value of the symbol
1364 is the value to add to the set. We create a section with
1365 the same name as the symbol, and add a reloc to insert the
1366 appropriate value into the section.
1367
1368 This action is actually obsolete; it used to make the
1369 linker do the right thing, but the linker no longer uses
1370 this function. */
1371
1372 section = bfd_get_section_by_name (abfd, cache_ptr->symbol.name);
1373 if (section == NULL)
1374 {
1375 char *copy;
1376
1377 copy = bfd_alloc (abfd, strlen (cache_ptr->symbol.name) + 1);
1378 if (copy == NULL)
1379 {
1380 bfd_set_error (bfd_error_no_memory);
1381 return false;
1382 }
1383
1384 strcpy (copy, cache_ptr->symbol.name);
1385 section = bfd_make_section (abfd, copy);
1386 if (section == NULL)
1387 return false;
1388 }
1389
1390 reloc = (arelent_chain *) bfd_alloc (abfd, sizeof (arelent_chain));
1391 if (reloc == NULL)
9783e04a 1392 {
68241b2b 1393 bfd_set_error (bfd_error_no_memory);
9783e04a
DM		 1394 return false;
1395 }
1396
4298e311
ILT		 1397 /* Build a relocation entry for the constructor. */
1398 switch (cache_ptr->type & N_TYPE)
a99c3d70 1399 {
4298e311 1400 case N_SETA:
4587b578 1401 into_section = bfd_abs_section_ptr;
ebd24135
ILT		 1402 cache_ptr->type = N_ABS;
1403 break;
4298e311
ILT		 1404 case N_SETT:
1405 into_section = obj_textsec (abfd);
ebd24135
ILT		 1406 cache_ptr->type = N_TEXT;
1407 break;
4298e311
ILT		 1408 case N_SETD:
1409 into_section = obj_datasec (abfd);
ebd24135
ILT		 1410 cache_ptr->type = N_DATA;
1411 break;
4298e311
ILT		 1412 case N_SETB:
1413 into_section = obj_bsssec (abfd);
ebd24135
ILT		 1414 cache_ptr->type = N_BSS;
1415 break;
ebd24135 1416 }
88dfcd68 1417
4298e311
ILT		 1418 /* Build a relocation pointing into the constructor section
1419 pointing at the symbol in the set vector specified. */
ebd24135 1420 reloc->relent.addend = cache_ptr->symbol.value;
4298e311 1421 cache_ptr->symbol.section = into_section;
ebd24135 1422 reloc->relent.sym_ptr_ptr = into_section->symbol_ptr_ptr;
6db82ea7 1423
4298e311
ILT		 1424 /* We modify the symbol to belong to a section depending upon
1425 the name of the symbol, and add to the size of the section
1426 to contain a pointer to the symbol. Build a reloc entry to
1427 relocate to this symbol attached to this section. */
a8a916c8 1428 section->flags = SEC_CONSTRUCTOR | SEC_RELOC;
a99c3d70 1429
ebd24135
ILT		 1430 section->reloc_count++;
1431 section->alignment_power = 2;
a99c3d70 1432
ebd24135
ILT		 1433 reloc->next = section->constructor_chain;
1434 section->constructor_chain = reloc;
1435 reloc->relent.address = section->_raw_size;
4298e311
ILT		 1436 section->_raw_size += BYTES_IN_WORD;
1437
f42fe159 1438 reloc->relent.howto = CTOR_TABLE_RELOC_HOWTO(abfd);
a99c3d70 1439
ebd24135
ILT		 1440 cache_ptr->symbol.flags |= BSF_CONSTRUCTOR;
1441 }
1442 break;
0c205af2 1443
4298e311
ILT		 1444 case N_WARNING:
1445 /* This symbol is the text of a warning message. The next
1446 symbol is the symbol to associate the warning with. If a
1447 reference is made to that symbol, a warning is issued. */
1448 cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_WARNING;
ebd24135 1449
4298e311
ILT		 1450 /* @@ Stuffing pointers into integers is a no-no. We can
1451 usually get away with it if the integer is large enough
1452 though. */
1453 if (sizeof (cache_ptr + 1) > sizeof (bfd_vma))
1454 abort ();
1455 cache_ptr->symbol.value = (bfd_vma) (cache_ptr + 1);
ebd24135 1456
4587b578 1457 cache_ptr->symbol.section = bfd_abs_section_ptr;
ebd24135 1458
4298e311 1459 break;
ebd24135 1460
4298e311
ILT		 1461 case N_INDR: case N_INDR | N_EXT:
1462 /* An indirect symbol. This consists of two symbols in a row.
1463 The first symbol is the name of the indirection. The second
1464 symbol is the name of the target. A reference to the first
1465 symbol becomes a reference to the second. */
1466 cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_INDIRECT | visible;
ebd24135 1467
4298e311
ILT		 1468 /* @@ Stuffing pointers into integers is a no-no. We can
1469 usually get away with it if the integer is large enough
1470 though. */
1471 if (sizeof (cache_ptr + 1) > sizeof (bfd_vma))
1472 abort ();
1473 cache_ptr->symbol.value = (bfd_vma) (cache_ptr + 1);
ebd24135 1474
4587b578 1475 cache_ptr->symbol.section = bfd_ind_section_ptr;
a99c3d70 1476
4298e311
ILT		 1477 break;
1478
1479 case N_WEAKU:
4587b578 1480 cache_ptr->symbol.section = bfd_und_section_ptr;
4298e311
ILT		 1481 cache_ptr->symbol.flags = BSF_WEAK;
1482 break;
1483
1484 case N_WEAKA:
4587b578 1485 cache_ptr->symbol.section = bfd_abs_section_ptr;
4298e311
ILT		 1486 cache_ptr->symbol.flags = BSF_WEAK;
1487 break;
1488
1489 case N_WEAKT:
1490 cache_ptr->symbol.section = obj_textsec (abfd);
1491 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1492 cache_ptr->symbol.flags = BSF_WEAK;
1493 break;
1494
1495 case N_WEAKD:
1496 cache_ptr->symbol.section = obj_datasec (abfd);
1497 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1498 cache_ptr->symbol.flags = BSF_WEAK;
1499 break;
1500
1501 case N_WEAKB:
1502 cache_ptr->symbol.section = obj_bsssec (abfd);
1503 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma;
1504 cache_ptr->symbol.flags = BSF_WEAK;
1505 break;
a99c3d70 1506 }
4298e311 1507
9783e04a 1508 return true;
7ed4093a
SC		 1509}
1510
4298e311 1511/* Set the fields of SYM_POINTER according to CACHE_PTR. */
6db82ea7 1512
4c3721d5 1513static boolean
4298e311 1514translate_to_native_sym_flags (abfd, cache_ptr, sym_pointer)
8eb5d4be 1515 bfd *abfd;
4298e311
ILT		 1516 asymbol *cache_ptr;
1517 struct external_nlist *sym_pointer;
7ed4093a
SC		 1518{
1519 bfd_vma value = cache_ptr->value;
1520
4298e311
ILT		 1521 /* Mask out any existing type bits in case copying from one section
1522 to another. */
10dea9ed 1523 sym_pointer->e_type[0] &= ~N_TYPE;
a99c3d70 1524
4587b578 1525 if (bfd_is_abs_section (bfd_get_section (cache_ptr)))
3caa6924 1526 sym_pointer->e_type[0] |= N_ABS;
f5419a59
ILT		 1527 else if (bfd_get_section (cache_ptr) == obj_textsec (abfd)
1528 || (bfd_get_section (cache_ptr)->output_section
1529 == obj_textsec (abfd)))
3caa6924 1530 sym_pointer->e_type[0] |= N_TEXT;
f5419a59
ILT		 1531 else if (bfd_get_section (cache_ptr) == obj_datasec (abfd)
1532 || (bfd_get_section (cache_ptr)->output_section
1533 == obj_datasec (abfd)))
a99c3d70 1534 sym_pointer->e_type[0] |= N_DATA;
f5419a59
ILT		 1535 else if (bfd_get_section (cache_ptr) == obj_bsssec (abfd)
1536 || (bfd_get_section (cache_ptr)->output_section
1537 == obj_bsssec (abfd)))
3caa6924 1538 sym_pointer->e_type[0] |= N_BSS;
4298e311
ILT		 1539 else if (bfd_get_section (cache_ptr) == NULL)
1540 {
1541 /* Protect the bfd_is_com_section call. This case occurs, e.g.,
1542 for the *DEBUG* section of a COFF file. */
1543 bfd_set_error (bfd_error_nonrepresentable_section);
1544 return false;
1545 }
4587b578
ILT		 1546 else if (bfd_is_und_section (bfd_get_section (cache_ptr)))
1547 sym_pointer->e_type[0] = N_UNDF | N_EXT;
1548 else if (bfd_is_ind_section (bfd_get_section (cache_ptr)))
1549 sym_pointer->e_type[0] = N_INDR;
4298e311
ILT		 1550 else if (bfd_is_com_section (bfd_get_section (cache_ptr)))
1551 sym_pointer->e_type[0] = N_UNDF | N_EXT;
1552 else
1553 {
1554 bfd_set_error (bfd_error_nonrepresentable_section);
1555 return false;
1556 }
6f56c941 1557
6db82ea7 1558 /* Turn the symbol from section relative to absolute again */
1afd2380
ILT		 1559 if (cache_ptr->section->output_section != NULL)
1560 value += (cache_ptr->section->output_section->vma
1561 + cache_ptr->section->output_offset);
1562 else
1563 value += cache_ptr->section->vma;
c188b0be 1564
4298e311 1565 if ((cache_ptr->flags & BSF_WARNING) != 0)
d7e34f67 1566 sym_pointer->e_type[0] = N_WARNING;
c188b0be 1567
4298e311
ILT		 1568 if ((cache_ptr->flags & BSF_DEBUGGING) != 0)
1569 sym_pointer->e_type[0] = ((aout_symbol_type *) cache_ptr)->type;
1570 else if ((cache_ptr->flags & BSF_GLOBAL) != 0)
3caa6924 1571 sym_pointer->e_type[0] |= N_EXT;
4298e311
ILT		 1572
1573 if ((cache_ptr->flags & BSF_CONSTRUCTOR) != 0)
1574 {
1575 int type = ((aout_symbol_type *) cache_ptr)->type;
1576 switch (type)
1577 {
1578 case N_ABS: type = N_SETA; break;
1579 case N_TEXT: type = N_SETT; break;
1580 case N_DATA: type = N_SETD; break;
1581 case N_BSS: type = N_SETB; break;
1582 }
1583 sym_pointer->e_type[0] = type;
1584 }
1585
1586 if ((cache_ptr->flags & BSF_WEAK) != 0)
1587 {
1588 int type;
1589
1590 switch (sym_pointer->e_type[0] & N_TYPE)
1591 {
1592 default:
1593 case N_ABS: type = N_WEAKA; break;
1594 case N_TEXT: type = N_WEAKT; break;
1595 case N_DATA: type = N_WEAKD; break;
1596 case N_BSS: type = N_WEAKB; break;
1597 case N_UNDF: type = N_WEAKU; break;
1598 }
1599 sym_pointer->e_type[0] = type;
1600 }
6db82ea7 1601
7ed4093a 1602 PUT_WORD(abfd, value, sym_pointer->e_value);
4c3721d5
ILT		 1603
1604 return true;
7ed4093a
SC		 1605}
1606\f
1607/* Native-level interface to symbols. */
1608
7ed4093a 1609asymbol *
8eb5d4be
JK		 1610NAME(aout,make_empty_symbol) (abfd)
1611 bfd *abfd;
9e2dad8e
JG		 1612{
1613 aout_symbol_type *new =
1614 (aout_symbol_type *)bfd_zalloc (abfd, sizeof (aout_symbol_type));
9783e04a
DM		 1615 if (!new)
1616 {
68241b2b 1617 bfd_set_error (bfd_error_no_memory);
9783e04a
DM		 1618 return NULL;
1619 }
9e2dad8e 1620 new->symbol.the_bfd = abfd;
fa2b89f1 1621
9e2dad8e
JG		 1622 return &new->symbol;
1623}
7ed4093a 1624
0ee75d02
ILT		 1625/* Translate a set of internal symbols into external symbols. */
1626
fa77c704
ILT		 1627boolean
1628NAME(aout,translate_symbol_table) (abfd, in, ext, count, str, strsize, dynamic)
0ee75d02
ILT		 1629 bfd *abfd;
1630 aout_symbol_type *in;
1631 struct external_nlist *ext;
1632 bfd_size_type count;
1633 char *str;
1634 bfd_size_type strsize;
1635 boolean dynamic;
1636{
1637 struct external_nlist *ext_end;
1638
1639 ext_end = ext + count;
1640 for (; ext < ext_end; ext++, in++)
1641 {
1642 bfd_vma x;
1643
1644 x = GET_WORD (abfd, ext->e_strx);
1645 in->symbol.the_bfd = abfd;
ca1c6bec
ILT		 1646
1647 /* For the normal symbols, the zero index points at the number
1648 of bytes in the string table but is to be interpreted as the
1649 null string. For the dynamic symbols, the number of bytes in
1650 the string table is stored in the __DYNAMIC structure and the
1651 zero index points at an actual string. */
1652 if (x == 0 && ! dynamic)
1653 in->symbol.name = "";
1654 else if (x < strsize)
0ee75d02
ILT		 1655 in->symbol.name = str + x;
1656 else
1657 return false;
1658
1659 in->symbol.value = GET_SWORD (abfd, ext->e_value);
1660 in->desc = bfd_h_get_16 (abfd, ext->e_desc);
1661 in->other = bfd_h_get_8 (abfd, ext->e_other);
1662 in->type = bfd_h_get_8 (abfd, ext->e_type);
1663 in->symbol.udata = 0;
1664
4298e311 1665 if (! translate_from_native_sym_flags (abfd, in))
9783e04a 1666 return false;
0ee75d02
ILT		 1667
1668 if (dynamic)
1669 in->symbol.flags |= BSF_DYNAMIC;
1670 }
1671
1672 return true;
1673}
1674
1675/* We read the symbols into a buffer, which is discarded when this
1676 function exits. We read the strings into a buffer large enough to
1677 hold them all plus all the cached symbol entries. */
1678
7ed4093a 1679boolean
8eb5d4be
JK		 1680NAME(aout,slurp_symbol_table) (abfd)
1681 bfd *abfd;
9e2dad8e 1682{
5c8444f8 1683 struct external_nlist *old_external_syms;
9e2dad8e 1684 aout_symbol_type *cached;
5c8444f8 1685 size_t cached_size;
0f213cc2 1686
9e2dad8e 1687 /* If there's no work to be done, don't do any */
5c8444f8
ILT		 1688 if (obj_aout_symbols (abfd) != (aout_symbol_type *) NULL)
1689 return true;
1690
1691 old_external_syms = obj_aout_external_syms (abfd);
1692
1693 if (! aout_get_external_symbols (abfd))
1694 return false;
1695
1696 if (obj_aout_external_sym_count (abfd) == 0)
0f213cc2 1697 {
68241b2b 1698 bfd_set_error (bfd_error_no_symbols);
0f213cc2
KR		 1699 return false;
1700 }
1701
fa77c704 1702 cached_size = (obj_aout_external_sym_count (abfd)
5c8444f8
ILT		 1703 * sizeof (aout_symbol_type));
1704 cached = (aout_symbol_type *) malloc (cached_size);
5c8444f8 1705 if (cached == NULL)
9783e04a 1706 {
68241b2b 1707 bfd_set_error (bfd_error_no_memory);
9783e04a
DM		 1708 return false;
1709 }
e85e8bfe 1710 memset (cached, 0, cached_size);
5c8444f8
ILT		 1711
1712 /* Convert from external symbol information to internal. */
fa77c704
ILT		 1713 if (! (NAME(aout,translate_symbol_table)
1714 (abfd, cached,
1715 obj_aout_external_syms (abfd),
1716 obj_aout_external_sym_count (abfd),
1717 obj_aout_external_strings (abfd),
1718 obj_aout_external_string_size (abfd),
1719 false)))
0f213cc2 1720 {
5c8444f8 1721 free (cached);
0f213cc2
KR		 1722 return false;
1723 }
1724
fa77c704 1725 bfd_get_symcount (abfd) = obj_aout_external_sym_count (abfd);
0f213cc2 1726
5c8444f8 1727 obj_aout_symbols (abfd) = cached;
0f213cc2 1728
5c8444f8
ILT		 1729 /* It is very likely that anybody who calls this function will not
1730 want the external symbol information, so if it was allocated
1731 because of our call to aout_get_external_symbols, we free it up
1732 right away to save space. */
1733 if (old_external_syms == (struct external_nlist *) NULL
1734 && obj_aout_external_syms (abfd) != (struct external_nlist *) NULL)
1735 {
1736 free (obj_aout_external_syms (abfd));
1737 obj_aout_external_syms (abfd) = NULL;
0ee75d02 1738 }
0f213cc2 1739
9e2dad8e
JG		 1740 return true;
1741}
0f213cc2 1742\f
d17fc4c9
ILT		 1743/* We use a hash table when writing out symbols so that we only write
1744 out a particular string once. This helps particularly when the
1745 linker writes out stabs debugging entries, because each different
1746 contributing object file tends to have many duplicate stabs
1747 strings.
1748
d63d0479
ILT		 1749 This hash table code breaks dbx on SunOS 4.1.3, so we don't do it
1750 if BFD_TRADITIONAL_FORMAT is set. */
0f213cc2 1751
d17fc4c9 1752static bfd_size_type add_to_stringtab
1afd2380
ILT		 1753 PARAMS ((bfd *, struct bfd_strtab_hash *, const char *, boolean));
1754static boolean emit_stringtab PARAMS ((bfd *, struct bfd_strtab_hash *));
d17fc4c9
ILT		 1755
1756/* Get the index of a string in a strtab, adding it if it is not
1afd2380 1757 already present. */
d17fc4c9
ILT		 1758
1759static INLINE bfd_size_type
1760add_to_stringtab (abfd, tab, str, copy)
0f213cc2 1761 bfd *abfd;
1afd2380 1762 struct bfd_strtab_hash *tab;
d17fc4c9
ILT		 1763 const char *str;
1764 boolean copy;
0f213cc2 1765{
1afd2380 1766 boolean hash;
0f213cc2 1767
d17fc4c9
ILT		 1768 /* An index of 0 always means the empty string. */
1769 if (*str == '\0')
1770 return 0;
0f213cc2 1771
1afd2380
ILT		 1772 /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx
1773 doesn't understand a hashed string table. */
1774 hash = true;
1775 if ((abfd->flags & BFD_TRADITIONAL_FORMAT) != 0)
1776 hash = false;
0f213cc2 1777
1afd2380
ILT		 1778 /* Add BYTES_IN_WORD to the return value to account for the space
1779 taken up by the count. */
1780 return BYTES_IN_WORD + _bfd_stringtab_add (tab, str, hash, copy);
0f213cc2
KR		 1781}
1782
d17fc4c9
ILT		 1783/* Write out a strtab. ABFD is already at the right location in the
1784 file. */
1785
29e626eb 1786static boolean
d17fc4c9
ILT		 1787emit_stringtab (abfd, tab)
1788 register bfd *abfd;
1afd2380 1789 struct bfd_strtab_hash *tab;
0f213cc2 1790{
d17fc4c9 1791 bfd_byte buffer[BYTES_IN_WORD];
0f213cc2 1792
1afd2380
ILT		 1793 /* The string table starts with the size. */
1794 PUT_WORD (abfd, _bfd_stringtab_size (tab) + BYTES_IN_WORD, buffer);
29e626eb
ILT		 1795 if (bfd_write ((PTR) buffer, 1, BYTES_IN_WORD, abfd) != BYTES_IN_WORD)
1796 return false;
0f213cc2 1797
1afd2380 1798 return _bfd_stringtab_emit (abfd, tab);
0f213cc2 1799}
d17fc4c9 1800\f
4c3721d5 1801boolean
8eb5d4be
JK		 1802NAME(aout,write_syms) (abfd)
1803 bfd *abfd;
0f213cc2
KR		 1804{
1805 unsigned int count ;
1806 asymbol **generic = bfd_get_outsymbols (abfd);
1afd2380 1807 struct bfd_strtab_hash *strtab;
0f213cc2 1808
1afd2380
ILT		 1809 strtab = _bfd_stringtab_init ();
1810 if (strtab == NULL)
d17fc4c9 1811 return false;
0f213cc2
KR		 1812
1813 for (count = 0; count < bfd_get_symcount (abfd); count++)
1814 {
7ed4093a 1815 asymbol *g = generic[count];
d17fc4c9 1816 bfd_size_type indx;
7ed4093a 1817 struct external_nlist nsp;
6db82ea7 1818
1afd2380 1819 indx = add_to_stringtab (abfd, strtab, g->name, false);
d17fc4c9
ILT		 1820 if (indx == (bfd_size_type) -1)
1821 goto error_return;
1822 PUT_WORD (abfd, indx, (bfd_byte *) nsp.e_strx);
6db82ea7 1823
0f213cc2
KR		 1824 if (bfd_asymbol_flavour(g) == abfd->xvec->flavour)
1825 {
1826 bfd_h_put_16(abfd, aout_symbol(g)->desc, nsp.e_desc);
1827 bfd_h_put_8(abfd, aout_symbol(g)->other, nsp.e_other);
1828 bfd_h_put_8(abfd, aout_symbol(g)->type, nsp.e_type);
1829 }
7ed4093a 1830 else
0f213cc2
KR		 1831 {
1832 bfd_h_put_16(abfd,0, nsp.e_desc);
1833 bfd_h_put_8(abfd, 0, nsp.e_other);
1834 bfd_h_put_8(abfd, 0, nsp.e_type);
1835 }
7b02b4ed 1836
4298e311 1837 if (! translate_to_native_sym_flags (abfd, g, &nsp))
d17fc4c9 1838 goto error_return;
7b02b4ed 1839
4c3721d5
ILT		 1840 if (bfd_write((PTR)&nsp,1,EXTERNAL_NLIST_SIZE, abfd)
1841 != EXTERNAL_NLIST_SIZE)
d17fc4c9 1842 goto error_return;
7ed4093a 1843
0f213cc2
KR		 1844 /* NB: `KEEPIT' currently overlays `flags', so set this only
1845 here, at the end. */
1846 g->KEEPIT = count;
1847 }
7ed4093a 1848
1afd2380 1849 if (! emit_stringtab (abfd, strtab))
d17fc4c9
ILT		 1850 goto error_return;
1851
1afd2380 1852 _bfd_stringtab_free (strtab);
d17fc4c9
ILT		 1853
1854 return true;
1855
1856error_return:
1afd2380 1857 _bfd_stringtab_free (strtab);
d17fc4c9 1858 return false;
0f213cc2 1859}
7ed4093a 1860
0f213cc2 1861\f
326e32d7 1862long
8eb5d4be
JK		 1863NAME(aout,get_symtab) (abfd, location)
1864 bfd *abfd;
1865 asymbol **location;
3f7607af 1866{
7ed4093a
SC		 1867 unsigned int counter = 0;
1868 aout_symbol_type *symbase;
ce07dd7c 1869
326e32d7
ILT		 1870 if (!NAME(aout,slurp_symbol_table)(abfd))
1871 return -1;
ce07dd7c 1872
7ed4093a
SC		 1873 for (symbase = obj_aout_symbols(abfd); counter++ < bfd_get_symcount (abfd);)
1874 *(location++) = (asymbol *)( symbase++);
1875 *location++ =0;
ce07dd7c 1876 return bfd_get_symcount (abfd);
3f7607af 1877}
7ed4093a
SC		 1878
1879\f
1880/* Standard reloc stuff */
1881/* Output standard relocation information to a file in target byte order. */
1882
1883void
8eb5d4be
JK		 1884NAME(aout,swap_std_reloc_out) (abfd, g, natptr)
1885 bfd *abfd;
1886 arelent *g;
1887 struct reloc_std_external *natptr;
3f7607af 1888{
6db82ea7
SC		 1889 int r_index;
1890 asymbol *sym = *(g->sym_ptr_ptr);
1891 int r_extern;
1892 unsigned int r_length;
1893 int r_pcrel;
1894 int r_baserel, r_jmptable, r_relative;
6db82ea7 1895 asection *output_section = sym->section->output_section;
ce07dd7c 1896
6db82ea7 1897 PUT_WORD(abfd, g->address, natptr->r_address);
ce07dd7c 1898
6db82ea7
SC		 1899 r_length = g->howto->size ; /* Size as a power of two */
1900 r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */
c188b0be
DM		 1901 /* XXX This relies on relocs coming from a.out files. */
1902 r_baserel = (g->howto->type & 8) != 0;
cb9461ff
JK		 1903 r_jmptable = (g->howto->type & 16) != 0;
1904 r_relative = (g->howto->type & 32) != 0;
c188b0be 1905
728472f1
ILT		 1906#if 0
1907 /* For a standard reloc, the addend is in the object file. */
6db82ea7 1908 r_addend = g->addend + (*(g->sym_ptr_ptr))->section->output_section->vma;
728472f1 1909#endif
c188b0be 1910
6db82ea7
SC		 1911 /* name was clobbered by aout_write_syms to be symbol index */
1912
c188b0be 1913 /* If this relocation is relative to a symbol then set the
2768b3f7
SC		 1914 r_index to the symbols index, and the r_extern bit.
1915
1916 Absolute symbols can come in in two ways, either as an offset
1917 from the abs section, or as a symbol which has an abs value.
1918 check for that here
1919 */
c188b0be 1920
2768b3f7 1921
382f2a3d 1922 if (bfd_is_com_section (output_section)
4587b578
ILT		 1923 || bfd_is_abs_section (output_section)
1924 || bfd_is_und_section (output_section))
ce07dd7c 1925 {
4587b578 1926 if (bfd_abs_section_ptr->symbol == sym)
2768b3f7
SC		 1927 {
1928 /* Whoops, looked like an abs symbol, but is really an offset
1929 from the abs section */
1930 r_index = 0;
1931 r_extern = 0;
1932 }
c188b0be 1933 else
2768b3f7
SC		 1934 {
1935 /* Fill in symbol */
1936 r_extern = 1;
1937 r_index = stoi((*(g->sym_ptr_ptr))->KEEPIT);
c188b0be 1938
2768b3f7 1939 }
ce07dd7c 1940 }
c188b0be 1941 else
ce07dd7c
KR		 1942 {
1943 /* Just an ordinary section */
1944 r_extern = 0;
c188b0be 1945 r_index = output_section->target_index;
ce07dd7c
KR		 1946 }
1947
6db82ea7
SC		 1948 /* now the fun stuff */
1949 if (abfd->xvec->header_byteorder_big_p != false) {
7ed4093a
SC		 1950 natptr->r_index[0] = r_index >> 16;
1951 natptr->r_index[1] = r_index >> 8;
1952 natptr->r_index[2] = r_index;
1953 natptr->r_type[0] =
6db82ea7
SC		 1954 (r_extern? RELOC_STD_BITS_EXTERN_BIG: 0)
1955 | (r_pcrel? RELOC_STD_BITS_PCREL_BIG: 0)
1956 | (r_baserel? RELOC_STD_BITS_BASEREL_BIG: 0)
1957 | (r_jmptable? RELOC_STD_BITS_JMPTABLE_BIG: 0)
1958 | (r_relative? RELOC_STD_BITS_RELATIVE_BIG: 0)
1959 | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG);
7ed4093a 1960 } else {
6db82ea7
SC		 1961 natptr->r_index[2] = r_index >> 16;
1962 natptr->r_index[1] = r_index >> 8;
1963 natptr->r_index[0] = r_index;
1964 natptr->r_type[0] =
1965 (r_extern? RELOC_STD_BITS_EXTERN_LITTLE: 0)
7ed4093a 1966 | (r_pcrel? RELOC_STD_BITS_PCREL_LITTLE: 0)
6db82ea7
SC		 1967 | (r_baserel? RELOC_STD_BITS_BASEREL_LITTLE: 0)
1968 | (r_jmptable? RELOC_STD_BITS_JMPTABLE_LITTLE: 0)
1969 | (r_relative? RELOC_STD_BITS_RELATIVE_LITTLE: 0)
1970 | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE);
1971 }
3f7607af 1972}
7ed4093a
SC		 1973
1974
1975/* Extended stuff */
1976/* Output extended relocation information to a file in target byte order. */
1977
1978void
8eb5d4be
JK		 1979NAME(aout,swap_ext_reloc_out) (abfd, g, natptr)
1980 bfd *abfd;
1981 arelent *g;
1982 register struct reloc_ext_external *natptr;
3f7607af 1983{
6db82ea7
SC		 1984 int r_index;
1985 int r_extern;
1986 unsigned int r_type;
1987 unsigned int r_addend;
c188b0be 1988 asymbol *sym = *(g->sym_ptr_ptr);
6db82ea7 1989 asection *output_section = sym->section->output_section;
c188b0be 1990
6db82ea7 1991 PUT_WORD (abfd, g->address, natptr->r_address);
c188b0be 1992
6db82ea7 1993 r_type = (unsigned int) g->howto->type;
7ed4093a 1994
c188b0be 1995 r_addend = g->addend + (*(g->sym_ptr_ptr))->section->output_section->vma;
7ed4093a 1996
c188b0be 1997 /* If this relocation is relative to a symbol then set the
2768b3f7
SC		 1998 r_index to the symbols index, and the r_extern bit.
1999
2000 Absolute symbols can come in in two ways, either as an offset
2001 from the abs section, or as a symbol which has an abs value.
c188b0be
DM		 2002 check for that here. */
2003
382f2a3d 2004 if (bfd_is_com_section (output_section)
4587b578
ILT		 2005 || bfd_is_abs_section (output_section)
2006 || bfd_is_und_section (output_section))
6db82ea7 2007 {
4587b578 2008 if (bfd_abs_section_ptr->symbol == sym)
2768b3f7
SC		 2009 {
2010 /* Whoops, looked like an abs symbol, but is really an offset
2011 from the abs section */
2012 r_index = 0;
2013 r_extern = 0;
2014 }
c188b0be 2015 else
2768b3f7
SC		 2016 {
2017 r_extern = 1;
2018 r_index = stoi((*(g->sym_ptr_ptr))->KEEPIT);
2019 }
6db82ea7 2020 }
c188b0be 2021 else
6db82ea7
SC		 2022 {
2023 /* Just an ordinary section */
2024 r_extern = 0;
c188b0be 2025 r_index = output_section->target_index;
6db82ea7 2026 }
c188b0be 2027
7ed4093a
SC		 2028 /* now the fun stuff */
2029 if (abfd->xvec->header_byteorder_big_p != false) {
2768b3f7
SC		 2030 natptr->r_index[0] = r_index >> 16;
2031 natptr->r_index[1] = r_index >> 8;
2032 natptr->r_index[2] = r_index;
2033 natptr->r_type[0] =
c188b0be
DM		 2034 ((r_extern? RELOC_EXT_BITS_EXTERN_BIG: 0)
2035 | (r_type << RELOC_EXT_BITS_TYPE_SH_BIG));
2768b3f7
SC		 2036 } else {
2037 natptr->r_index[2] = r_index >> 16;
2038 natptr->r_index[1] = r_index >> 8;
2039 natptr->r_index[0] = r_index;
2040 natptr->r_type[0] =
2041 (r_extern? RELOC_EXT_BITS_EXTERN_LITTLE: 0)
2042 | (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE);
2043 }
7ed4093a
SC		 2044
2045 PUT_WORD (abfd, r_addend, natptr->r_addend);
2046}
2047
6db82ea7
SC		 2048/* BFD deals internally with all things based from the section they're
2049 in. so, something in 10 bytes into a text section with a base of
c188b0be 2050 50 would have a symbol (.text+10) and know .text vma was 50.
6db82ea7
SC		 2051
2052 Aout keeps all it's symbols based from zero, so the symbol would
2053 contain 60. This macro subs the base of each section from the value
2054 to give the true offset from the section */
2055
2056
7ed4093a
SC		 2057#define MOVE_ADDRESS(ad) \
2058 if (r_extern) { \
6db82ea7
SC		 2059 /* undefined symbol */ \
2060 cache_ptr->sym_ptr_ptr = symbols + r_index; \
2061 cache_ptr->addend = ad; \
2062 } else { \
2063 /* defined, section relative. replace symbol with pointer to \
2064 symbol which points to section */ \
7ed4093a
SC		 2065 switch (r_index) { \
2066 case N_TEXT: \
2067 case N_TEXT | N_EXT: \
6db82ea7 2068 cache_ptr->sym_ptr_ptr = obj_textsec(abfd)->symbol_ptr_ptr; \
7ed4093a
SC		 2069 cache_ptr->addend = ad - su->textsec->vma; \
2070 break; \
2071 case N_DATA: \
2072 case N_DATA | N_EXT: \
6db82ea7 2073 cache_ptr->sym_ptr_ptr = obj_datasec(abfd)->symbol_ptr_ptr; \
7ed4093a
SC		 2074 cache_ptr->addend = ad - su->datasec->vma; \
2075 break; \
2076 case N_BSS: \
2077 case N_BSS | N_EXT: \
6db82ea7 2078 cache_ptr->sym_ptr_ptr = obj_bsssec(abfd)->symbol_ptr_ptr; \
7ed4093a
SC		 2079 cache_ptr->addend = ad - su->bsssec->vma; \
2080 break; \
6db82ea7 2081 default: \
7ed4093a
SC		 2082 case N_ABS: \
2083 case N_ABS | N_EXT: \
4587b578 2084 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \
6db82ea7 2085 cache_ptr->addend = ad; \
7ed4093a
SC		 2086 break; \
2087 } \
2088 } \
2089
2090void
8eb5d4be
JK		 2091NAME(aout,swap_ext_reloc_in) (abfd, bytes, cache_ptr, symbols)
2092 bfd *abfd;
2093 struct reloc_ext_external *bytes;
2094 arelent *cache_ptr;
2095 asymbol **symbols;
7ed4093a
SC		 2096{
2097 int r_index;
2098 int r_extern;
2099 unsigned int r_type;
6db82ea7 2100 struct aoutdata *su = &(abfd->tdata.aout_data->a);
7ed4093a
SC		 2101
2102 cache_ptr->address = (GET_SWORD (abfd, bytes->r_address));
2103
2104 /* now the fun stuff */
2105 if (abfd->xvec->header_byteorder_big_p != false) {
382f2a3d
ILT		 2106 r_index = (bytes->r_index[0] << 16)
2107 | (bytes->r_index[1] << 8)
2108 | bytes->r_index[2];
7ed4093a
SC		 2109 r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG));
2110 r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
2111 >> RELOC_EXT_BITS_TYPE_SH_BIG;
2112 } else {
382f2a3d
ILT		 2113 r_index = (bytes->r_index[2] << 16)
2114 | (bytes->r_index[1] << 8)
2115 | bytes->r_index[0];
7ed4093a
SC		 2116 r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE));
2117 r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
2118 >> RELOC_EXT_BITS_TYPE_SH_LITTLE;
2119 }
2120
2121 cache_ptr->howto = howto_table_ext + r_type;
6db82ea7 2122 MOVE_ADDRESS(GET_SWORD(abfd, bytes->r_addend));
7ed4093a
SC		 2123}
2124
2125void
8eb5d4be
JK		 2126NAME(aout,swap_std_reloc_in) (abfd, bytes, cache_ptr, symbols)
2127 bfd *abfd;
2128 struct reloc_std_external *bytes;
2129 arelent *cache_ptr;
2130 asymbol **symbols;
7ed4093a
SC		 2131{
2132 int r_index;
2133 int r_extern;
2134 unsigned int r_length;
2135 int r_pcrel;
2136 int r_baserel, r_jmptable, r_relative;
6db82ea7 2137 struct aoutdata *su = &(abfd->tdata.aout_data->a);
c188b0be 2138 int howto_idx;
7ed4093a 2139
34dd8ba3 2140 cache_ptr->address = bfd_h_get_32 (abfd, bytes->r_address);
7ed4093a
SC		 2141
2142 /* now the fun stuff */
2143 if (abfd->xvec->header_byteorder_big_p != false) {
382f2a3d
ILT		 2144 r_index = (bytes->r_index[0] << 16)
2145 | (bytes->r_index[1] << 8)
2146 | bytes->r_index[2];
7ed4093a
SC		 2147 r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
2148 r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
2149 r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_BIG));
2150 r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG));
2151 r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG));
c188b0be 2152 r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_BIG)
7ed4093a
SC		 2153 >> RELOC_STD_BITS_LENGTH_SH_BIG;
2154 } else {
382f2a3d
ILT		 2155 r_index = (bytes->r_index[2] << 16)
2156 | (bytes->r_index[1] << 8)
2157 | bytes->r_index[0];
7ed4093a
SC		 2158 r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
2159 r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
2160 r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE));
2161 r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE));
2162 r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE));
c188b0be 2163 r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE)
7ed4093a
SC		 2164 >> RELOC_STD_BITS_LENGTH_SH_LITTLE;
2165 }
2166
cb9461ff
JK		 2167 howto_idx = r_length + 4 * r_pcrel + 8 * r_baserel
2168 + 16 * r_jmptable + 32 * r_relative;
c188b0be
DM		 2169 BFD_ASSERT (howto_idx < TABLE_SIZE (howto_table_std));
2170 cache_ptr->howto = howto_table_std + howto_idx;
2171 BFD_ASSERT (cache_ptr->howto->type != -1);
7ed4093a
SC		 2172
2173 MOVE_ADDRESS(0);
2174}
2175
5c8444f8 2176/* Read and swap the relocs for a section. */
7ed4093a
SC		 2177
2178boolean
8eb5d4be
JK		 2179NAME(aout,slurp_reloc_table) (abfd, asect, symbols)
2180 bfd *abfd;
2181 sec_ptr asect;
2182 asymbol **symbols;
7ed4093a
SC		 2183{
2184 unsigned int count;
2185 bfd_size_type reloc_size;
2186 PTR relocs;
2187 arelent *reloc_cache;
2188 size_t each_size;
0ee75d02
ILT		 2189 unsigned int counter = 0;
2190 arelent *cache_ptr;
7ed4093a 2191
5c8444f8
ILT		 2192 if (asect->relocation)
2193 return true;
7ed4093a 2194
5c8444f8
ILT		 2195 if (asect->flags & SEC_CONSTRUCTOR)
2196 return true;
7ed4093a 2197
0ee75d02 2198 if (asect == obj_datasec (abfd))
7ed4093a 2199 reloc_size = exec_hdr(abfd)->a_drsize;
0ee75d02 2200 else if (asect == obj_textsec (abfd))
7ed4093a 2201 reloc_size = exec_hdr(abfd)->a_trsize;
f42fe159
ILT		 2202 else if (asect == obj_bsssec (abfd))
2203 reloc_size = 0;
0ee75d02
ILT		 2204 else
2205 {
68241b2b 2206 bfd_set_error (bfd_error_invalid_operation);
0ee75d02
ILT		 2207 return false;
2208 }
2209
5c8444f8
ILT		 2210 if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0)
2211 return false;
2212
7ed4093a
SC		 2213 each_size = obj_reloc_entry_size (abfd);
2214
2215 count = reloc_size / each_size;
2216
fa77c704 2217 reloc_cache = (arelent *) malloc ((size_t) (count * sizeof (arelent)));
5c8444f8 2218 if (reloc_cache == NULL && count != 0)
0ee75d02 2219 {
68241b2b 2220 bfd_set_error (bfd_error_no_memory);
0ee75d02
ILT		 2221 return false;
2222 }
fa77c704 2223 memset (reloc_cache, 0, count * sizeof (arelent));
7ed4093a 2224
5c8444f8
ILT		 2225 relocs = malloc (reloc_size);
2226 if (relocs == NULL && reloc_size != 0)
0ee75d02 2227 {
5c8444f8
ILT		 2228 free (reloc_cache);
2229 bfd_set_error (bfd_error_no_memory);
2230 return false;
0ee75d02 2231 }
7ed4093a 2232
0ee75d02
ILT		 2233 if (bfd_read (relocs, 1, reloc_size, abfd) != reloc_size)
2234 {
5c8444f8
ILT		 2235 free (relocs);
2236 free (reloc_cache);
0ee75d02
ILT		 2237 return false;
2238 }
7ed4093a 2239
0ee75d02
ILT		 2240 cache_ptr = reloc_cache;
2241 if (each_size == RELOC_EXT_SIZE)
2242 {
2243 register struct reloc_ext_external *rptr =
2244 (struct reloc_ext_external *) relocs;
7ed4093a 2245
0ee75d02
ILT		 2246 for (; counter < count; counter++, rptr++, cache_ptr++)
2247 NAME(aout,swap_ext_reloc_in) (abfd, rptr, cache_ptr, symbols);
7ed4093a 2248 }
0ee75d02
ILT		 2249 else
2250 {
5c8444f8
ILT		 2251 register struct reloc_std_external *rptr =
2252 (struct reloc_std_external *) relocs;
7ed4093a 2253
0ee75d02 2254 for (; counter < count; counter++, rptr++, cache_ptr++)
f42fe159 2255 MY_swap_std_reloc_in(abfd, rptr, cache_ptr, symbols);
7ed4093a
SC		 2256 }
2257
5c8444f8
ILT		 2258 free (relocs);
2259
7ed4093a 2260 asect->relocation = reloc_cache;
0ee75d02 2261 asect->reloc_count = cache_ptr - reloc_cache;
5c8444f8 2262
7ed4093a
SC		 2263 return true;
2264}
2265
7ed4093a
SC		 2266/* Write out a relocation section into an object file. */
2267
2268boolean
8eb5d4be
JK		 2269NAME(aout,squirt_out_relocs) (abfd, section)
2270 bfd *abfd;
2271 asection *section;
7ed4093a
SC		 2272{
2273 arelent **generic;
2274 unsigned char *native, *natptr;
2275 size_t each_size;
2276
2277 unsigned int count = section->reloc_count;
2278 size_t natsize;
2279
2280 if (count == 0) return true;
2281
2282 each_size = obj_reloc_entry_size (abfd);
2283 natsize = each_size * count;
2284 native = (unsigned char *) bfd_zalloc (abfd, natsize);
2285 if (!native) {
68241b2b 2286 bfd_set_error (bfd_error_no_memory);
7ed4093a
SC		 2287 return false;
2288 }
2289
2290 generic = section->orelocation;
2291
c188b0be 2292 if (each_size == RELOC_EXT_SIZE)
7ed4093a
SC		 2293 {
2294 for (natptr = native;
2295 count != 0;
2296 --count, natptr += each_size, ++generic)
2297 NAME(aout,swap_ext_reloc_out) (abfd, *generic, (struct reloc_ext_external *)natptr);
2298 }
c188b0be 2299 else
7ed4093a
SC		 2300 {
2301 for (natptr = native;
2302 count != 0;
2303 --count, natptr += each_size, ++generic)
f42fe159 2304 MY_swap_std_reloc_out(abfd, *generic, (struct reloc_std_external *)natptr);
7ed4093a
SC		 2305 }
2306
2307 if ( bfd_write ((PTR) native, 1, natsize, abfd) != natsize) {
2308 bfd_release(abfd, native);
2309 return false;
2310 }
2311 bfd_release (abfd, native);
2312
2313 return true;
2314}
2315
2316/* This is stupid. This function should be a boolean predicate */
326e32d7 2317long
8eb5d4be
JK		 2318NAME(aout,canonicalize_reloc) (abfd, section, relptr, symbols)
2319 bfd *abfd;
2320 sec_ptr section;
2321 arelent **relptr;
2322 asymbol **symbols;
7ed4093a
SC		 2323{
2324 arelent *tblptr = section->relocation;
2325 unsigned int count;
2326
4f019d04
ILT		 2327 if (section == obj_bsssec (abfd))
2328 {
2329 *relptr = NULL;
2330 return 0;
2331 }
2332
7ed4093a 2333 if (!(tblptr || NAME(aout,slurp_reloc_table)(abfd, section, symbols)))
326e32d7 2334 return -1;
7ed4093a
SC		 2335
2336 if (section->flags & SEC_CONSTRUCTOR) {
2337 arelent_chain *chain = section->constructor_chain;
2338 for (count = 0; count < section->reloc_count; count ++) {
2339 *relptr ++ = &chain->relent;
2340 chain = chain->next;
2341 }
2342 }
2343 else {
2344 tblptr = section->relocation;
7ed4093a 2345
c188b0be 2346 for (count = 0; count++ < section->reloc_count;)
7ed4093a
SC		 2347 {
2348 *relptr++ = tblptr++;
2349 }
2350 }
2351 *relptr = 0;
2352
2353 return section->reloc_count;
2354}
2355
326e32d7 2356long
8eb5d4be
JK		 2357NAME(aout,get_reloc_upper_bound) (abfd, asect)
2358 bfd *abfd;
2359 sec_ptr asect;
7ed4093a
SC		 2360{
2361 if (bfd_get_format (abfd) != bfd_object) {
68241b2b 2362 bfd_set_error (bfd_error_invalid_operation);
326e32d7 2363 return -1;
7ed4093a
SC		 2364 }
2365 if (asect->flags & SEC_CONSTRUCTOR) {
2366 return (sizeof (arelent *) * (asect->reloc_count+1));
2367 }
2368
7ed4093a 2369 if (asect == obj_datasec (abfd))
fa77c704
ILT		 2370 return (sizeof (arelent *)
2371 * ((exec_hdr(abfd)->a_drsize / obj_reloc_entry_size (abfd))
2372 + 1));
7ed4093a
SC		 2373
2374 if (asect == obj_textsec (abfd))
fa77c704
ILT		 2375 return (sizeof (arelent *)
2376 * ((exec_hdr(abfd)->a_trsize / obj_reloc_entry_size (abfd))
2377 + 1));
7ed4093a 2378
4f019d04
ILT		 2379 if (asect == obj_bsssec (abfd))
2380 return sizeof (arelent *);
2381
f42fe159
ILT		 2382 if (asect == obj_bsssec (abfd))
2383 return 0;
2384
68241b2b 2385 bfd_set_error (bfd_error_invalid_operation);
326e32d7 2386 return -1;
7ed4093a
SC		 2387}
2388
2389\f
326e32d7 2390long
8eb5d4be
JK		 2391NAME(aout,get_symtab_upper_bound) (abfd)
2392 bfd *abfd;
7ed4093a 2393{
326e32d7
ILT		 2394 if (!NAME(aout,slurp_symbol_table)(abfd))
2395 return -1;
7ed4093a
SC		 2396
2397 return (bfd_get_symcount (abfd)+1) * (sizeof (aout_symbol_type *));
2398}
728472f1
ILT		 2399
2400/*ARGSUSED*/
7ed4093a 2401 alent *
8eb5d4be
JK		 2402NAME(aout,get_lineno) (ignore_abfd, ignore_symbol)
2403 bfd *ignore_abfd;
2404 asymbol *ignore_symbol;
7ed4093a
SC		 2405{
2406return (alent *)NULL;
2407}
2408
728472f1 2409/*ARGSUSED*/
c188b0be 2410void
8eb5d4be
JK		 2411NAME(aout,get_symbol_info) (ignore_abfd, symbol, ret)
2412 bfd *ignore_abfd;
2413 asymbol *symbol;
2414 symbol_info *ret;
34dd8ba3
JG		 2415{
2416 bfd_symbol_info (symbol, ret);
2417
2418 if (ret->type == '?')
2419 {
2420 int type_code = aout_symbol(symbol)->type & 0xff;
2421 CONST char *stab_name = aout_stab_name(type_code);
2422 static char buf[10];
2423
2424 if (stab_name == NULL)
2425 {
2426 sprintf(buf, "(%d)", type_code);
2427 stab_name = buf;
2428 }
2429 ret->type = '-';
2430 ret->stab_other = (unsigned)(aout_symbol(symbol)->other & 0xff);
2431 ret->stab_desc = (unsigned)(aout_symbol(symbol)->desc & 0xffff);
2432 ret->stab_name = stab_name;
2433 }
2434}
7ed4093a 2435
728472f1 2436/*ARGSUSED*/
c188b0be 2437void
8eb5d4be
JK		 2438NAME(aout,print_symbol) (ignore_abfd, afile, symbol, how)
2439 bfd *ignore_abfd;
2440 PTR afile;
2441 asymbol *symbol;
2442 bfd_print_symbol_type how;
7ed4093a
SC		 2443{
2444 FILE *file = (FILE *)afile;
2445
2446 switch (how) {
9e2dad8e 2447 case bfd_print_symbol_name:
fb3be09b
JG		 2448 if (symbol->name)
2449 fprintf(file,"%s", symbol->name);
7ed4093a 2450 break;
9e2dad8e 2451 case bfd_print_symbol_more:
7ed4093a
SC		 2452 fprintf(file,"%4x %2x %2x",(unsigned)(aout_symbol(symbol)->desc & 0xffff),
2453 (unsigned)(aout_symbol(symbol)->other & 0xff),
2454 (unsigned)(aout_symbol(symbol)->type));
2455 break;
9e2dad8e 2456 case bfd_print_symbol_all:
7ed4093a 2457 {
6db82ea7
SC		 2458 CONST char *section_name = symbol->section->name;
2459
7ed4093a
SC		 2460
2461 bfd_print_symbol_vandf((PTR)file,symbol);
2462
fb3be09b 2463 fprintf(file," %-5s %04x %02x %02x",
7ed4093a
SC		 2464 section_name,
2465 (unsigned)(aout_symbol(symbol)->desc & 0xffff),
2466 (unsigned)(aout_symbol(symbol)->other & 0xff),
9e2dad8e 2467 (unsigned)(aout_symbol(symbol)->type & 0xff));
fb3be09b
JG		 2468 if (symbol->name)
2469 fprintf(file," %s", symbol->name);
7ed4093a
SC		 2470 }
2471 break;
2472 }
2473}
2474
c188b0be 2475/*
6724ff46 2476 provided a BFD, a section and an offset into the section, calculate
7ed4093a
SC		 2477 and return the name of the source file and the line nearest to the
2478 wanted location.
2479*/
c188b0be 2480
7ed4093a 2481boolean
8eb5d4be
JK		 2482NAME(aout,find_nearest_line)
2483 (abfd, section, symbols, offset, filename_ptr, functionname_ptr, line_ptr)
2484 bfd *abfd;
2485 asection *section;
2486 asymbol **symbols;
2487 bfd_vma offset;
2488 CONST char **filename_ptr;
2489 CONST char **functionname_ptr;
2490 unsigned int *line_ptr;
7ed4093a
SC		 2491{
2492 /* Run down the file looking for the filename, function and linenumber */
2493 asymbol **p;
2494 static char buffer[100];
98d43107 2495 static char filename_buffer[200];
6db82ea7
SC		 2496 CONST char *directory_name = NULL;
2497 CONST char *main_file_name = NULL;
2498 CONST char *current_file_name = NULL;
2499 CONST char *line_file_name = NULL; /* Value of current_file_name at line number. */
7ed4093a
SC		 2500 bfd_vma high_line_vma = ~0;
2501 bfd_vma low_func_vma = 0;
2502 asymbol *func = 0;
2503 *filename_ptr = abfd->filename;
2504 *functionname_ptr = 0;
2505 *line_ptr = 0;
2506 if (symbols != (asymbol **)NULL) {
2507 for (p = symbols; *p; p++) {
2508 aout_symbol_type *q = (aout_symbol_type *)(*p);
98d43107 2509 next:
7ed4093a
SC		 2510 switch (q->type){
2511 case N_SO:
3f7607af 2512 main_file_name = current_file_name = q->symbol.name;
98d43107
JG		 2513 /* Look ahead to next symbol to check if that too is an N_SO. */
2514 p++;
2515 if (*p == NULL)
2516 break;
2517 q = (aout_symbol_type *)(*p);
6db82ea7 2518 if (q->type != (int)N_SO)
98d43107
JG		 2519 goto next;
2520
2521 /* Found a second N_SO First is directory; second is filename. */
3f7607af
PB		 2522 directory_name = current_file_name;
2523 main_file_name = current_file_name = q->symbol.name;
2524 if (obj_textsec(abfd) != section)
2525 goto done;
2526 break;
2527 case N_SOL:
2528 current_file_name = q->symbol.name;
7ed4093a 2529 break;
3f7607af 2530
7ed4093a
SC		 2531 case N_SLINE:
2532
2533 case N_DSLINE:
2534 case N_BSLINE:
2535 /* We'll keep this if it resolves nearer than the one we have already */
2536 if (q->symbol.value >= offset &&
2537 q->symbol.value < high_line_vma) {
2538 *line_ptr = q->desc;
2539 high_line_vma = q->symbol.value;
3f7607af 2540 line_file_name = current_file_name;
7ed4093a
SC		 2541 }
2542 break;
2543 case N_FUN:
2544 {
2545 /* We'll keep this if it is nearer than the one we have already */
2546 if (q->symbol.value >= low_func_vma &&
2547 q->symbol.value <= offset) {
2548 low_func_vma = q->symbol.value;
2549 func = (asymbol *)q;
2550 }
2551 if (*line_ptr && func) {
2552 CONST char *function = func->name;
2553 char *p;
ec099b4b 2554
91f300d6 2555 /* The caller expects a symbol name. We actually have a
ec099b4b
ILT		 2556 function name, without the leading underscore. Put the
2557 underscore back in, so that the caller gets a symbol
2558 name. */
2559 if (bfd_get_symbol_leading_char (abfd) == '\0')
2560 strncpy (buffer, function, sizeof (buffer) - 1);
2561 else
2562 {
2563 buffer[0] = bfd_get_symbol_leading_char (abfd);
2564 strncpy (buffer + 1, function, sizeof (buffer) - 2);
2565 }
7ed4093a
SC		 2566 buffer[sizeof(buffer)-1] = 0;
2567 /* Have to remove : stuff */
2568 p = strchr(buffer,':');
7b02b4ed 2569 if (p != NULL) { *p = '\0'; }
7ed4093a 2570 *functionname_ptr = buffer;
3f7607af 2571 goto done;
7ed4093a
SC		 2572
2573 }
2574 }
2575 break;
2576 }
2577 }
2578 }
3f7607af
PB		 2579
2580 done:
2581 if (*line_ptr)
2582 main_file_name = line_file_name;
2583 if (main_file_name) {
2584 if (main_file_name[0] == '/' || directory_name == NULL)
2585 *filename_ptr = main_file_name;
2586 else {
2587 sprintf(filename_buffer, "%.140s%.50s",
2588 directory_name, main_file_name);
2589 *filename_ptr = filename_buffer;
2590 }
2591 }
7ed4093a
SC		 2592 return true;
2593
2594}
2595
728472f1 2596/*ARGSUSED*/
c188b0be 2597int
8eb5d4be
JK		 2598NAME(aout,sizeof_headers) (abfd, execable)
2599 bfd *abfd;
2600 boolean execable;
7ed4093a 2601{
6db82ea7 2602 return adata(abfd).exec_bytes_size;
7ed4093a 2603}
5c8444f8
ILT		 2604
2605/* Free all information we have cached for this BFD. We can always
2606 read it again later if we need it. */
2607
2608boolean
2609NAME(aout,bfd_free_cached_info) (abfd)
2610 bfd *abfd;
2611{
2612 asection *o;
2613
c4dd531f
ILT		 2614 if (bfd_get_format (abfd) != bfd_object)
2615 return true;
2616
4852416e
DHW		 2617#define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; }
2618 BFCI_FREE (obj_aout_symbols (abfd));
2619 BFCI_FREE (obj_aout_external_syms (abfd));
2620 BFCI_FREE (obj_aout_external_strings (abfd));
5c8444f8 2621 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
4852416e
DHW		 2622 BFCI_FREE (o->relocation);
2623#undef BFCI_FREE
5c8444f8
ILT		 2624
2625 return true;
2626}
4c3721d5
ILT		 2627\f
2628/* a.out link code. */
2629
4c3721d5
ILT		 2630static boolean aout_link_add_object_symbols
2631 PARAMS ((bfd *, struct bfd_link_info *));
2632static boolean aout_link_check_archive_element
2633 PARAMS ((bfd *, struct bfd_link_info *, boolean *));
4c3721d5
ILT		 2634static boolean aout_link_free_symbols PARAMS ((bfd *));
2635static boolean aout_link_check_ar_symbols
2636 PARAMS ((bfd *, struct bfd_link_info *, boolean *pneeded));
2637static boolean aout_link_add_symbols
2638 PARAMS ((bfd *, struct bfd_link_info *));
2639
2640/* Routine to create an entry in an a.out link hash table. */
2641
e85e8bfe
ILT		 2642struct bfd_hash_entry *
2643NAME(aout,link_hash_newfunc) (entry, table, string)
4c3721d5
ILT		 2644 struct bfd_hash_entry *entry;
2645 struct bfd_hash_table *table;
2646 const char *string;
2647{
2648 struct aout_link_hash_entry *ret = (struct aout_link_hash_entry *) entry;
2649
2650 /* Allocate the structure if it has not already been allocated by a
2651 subclass. */
2652 if (ret == (struct aout_link_hash_entry *) NULL)
2653 ret = ((struct aout_link_hash_entry *)
2654 bfd_hash_allocate (table, sizeof (struct aout_link_hash_entry)));
9783e04a
DM		 2655 if (ret == (struct aout_link_hash_entry *) NULL)
2656 {
68241b2b 2657 bfd_set_error (bfd_error_no_memory);
9783e04a
DM		 2658 return (struct bfd_hash_entry *) ret;
2659 }
4c3721d5
ILT		 2660
2661 /* Call the allocation method of the superclass. */
2662 ret = ((struct aout_link_hash_entry *)
2663 _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2664 table, string));
9783e04a 2665 if (ret)
35fee729
ILT		 2666 {
2667 /* Set local fields. */
2668 ret->written = false;
2669 ret->indx = -1;
2670 }
4c3721d5
ILT		 2671
2672 return (struct bfd_hash_entry *) ret;
2673}
2674
e85e8bfe
ILT		 2675/* Initialize an a.out link hash table. */
2676
2677boolean
2678NAME(aout,link_hash_table_init) (table, abfd, newfunc)
2679 struct aout_link_hash_table *table;
2680 bfd *abfd;
2681 struct bfd_hash_entry *(*newfunc) PARAMS ((struct bfd_hash_entry *,
2682 struct bfd_hash_table *,
2683 const char *));
2684{
2685 return _bfd_link_hash_table_init (&table->root, abfd, newfunc);
2686}
2687
4c3721d5
ILT		 2688/* Create an a.out link hash table. */
2689
2690struct bfd_link_hash_table *
2691NAME(aout,link_hash_table_create) (abfd)
2692 bfd *abfd;
2693{
2694 struct aout_link_hash_table *ret;
2695
2696 ret = ((struct aout_link_hash_table *)
9783e04a
DM		 2697 malloc (sizeof (struct aout_link_hash_table)));
2698 if (ret == (struct aout_link_hash_table *) NULL)
2699 {
68241b2b 2700 bfd_set_error (bfd_error_no_memory);
9783e04a
DM		 2701 return (struct bfd_link_hash_table *) NULL;
2702 }
e85e8bfe
ILT		 2703 if (! NAME(aout,link_hash_table_init) (ret, abfd,
2704 NAME(aout,link_hash_newfunc)))
4c3721d5
ILT		 2705 {
2706 free (ret);
2707 return (struct bfd_link_hash_table *) NULL;
2708 }
2709 return &ret->root;
2710}
2711
4c3721d5
ILT		 2712/* Given an a.out BFD, add symbols to the global hash table as
2713 appropriate. */
2714
2715boolean
2716NAME(aout,link_add_symbols) (abfd, info)
2717 bfd *abfd;
2718 struct bfd_link_info *info;
2719{
2720 switch (bfd_get_format (abfd))
2721 {
2722 case bfd_object:
2723 return aout_link_add_object_symbols (abfd, info);
2724 case bfd_archive:
2725 return _bfd_generic_link_add_archive_symbols
2726 (abfd, info, aout_link_check_archive_element);
2727 default:
68241b2b 2728 bfd_set_error (bfd_error_wrong_format);
4c3721d5
ILT		 2729 return false;
2730 }
2731}
2732
2733/* Add symbols from an a.out object file. */
2734
2735static boolean
2736aout_link_add_object_symbols (abfd, info)
2737 bfd *abfd;
2738 struct bfd_link_info *info;
2739{
5c8444f8 2740 if (! aout_get_external_symbols (abfd))
4c3721d5
ILT		 2741 return false;
2742 if (! aout_link_add_symbols (abfd, info))
2743 return false;
2744 if (! info->keep_memory)
2745 {
2746 if (! aout_link_free_symbols (abfd))
2747 return false;
2748 }
2749 return true;
2750}
2751
2752/* Check a single archive element to see if we need to include it in
2753 the link. *PNEEDED is set according to whether this element is
2754 needed in the link or not. This is called from
2755 _bfd_generic_link_add_archive_symbols. */
2756
2757static boolean
2758aout_link_check_archive_element (abfd, info, pneeded)
2759 bfd *abfd;
2760 struct bfd_link_info *info;
2761 boolean *pneeded;
2762{
5c8444f8 2763 if (! aout_get_external_symbols (abfd))
4c3721d5
ILT		 2764 return false;
2765
2766 if (! aout_link_check_ar_symbols (abfd, info, pneeded))
2767 return false;
2768
2769 if (*pneeded)
2770 {
2771 if (! aout_link_add_symbols (abfd, info))
2772 return false;
2773 }
2774
1afd2380 2775 if (! info->keep_memory || ! *pneeded)
4c3721d5
ILT		 2776 {
2777 if (! aout_link_free_symbols (abfd))
2778 return false;
2779 }
2780
2781 return true;
2782}
2783
4c3721d5
ILT		 2784/* Free up the internal symbols read from an a.out file. */
2785
2786static boolean
2787aout_link_free_symbols (abfd)
2788 bfd *abfd;
2789{
2790 if (obj_aout_external_syms (abfd) != (struct external_nlist *) NULL)
2791 {
2792 free ((PTR) obj_aout_external_syms (abfd));
2793 obj_aout_external_syms (abfd) = (struct external_nlist *) NULL;
2794 }
2795 if (obj_aout_external_strings (abfd) != (char *) NULL)
2796 {
2797 free ((PTR) obj_aout_external_strings (abfd));
2798 obj_aout_external_strings (abfd) = (char *) NULL;
2799 }
2800 return true;
2801}
2802
2803/* Look through the internal symbols to see if this object file should
2804 be included in the link. We should include this object file if it
2805 defines any symbols which are currently undefined. If this object
2806 file defines a common symbol, then we may adjust the size of the
2807 known symbol but we do not include the object file in the link
2808 (unless there is some other reason to include it). */
2809
2810static boolean
2811aout_link_check_ar_symbols (abfd, info, pneeded)
2812 bfd *abfd;
2813 struct bfd_link_info *info;
2814 boolean *pneeded;
2815{
2816 register struct external_nlist *p;
2817 struct external_nlist *pend;
2818 char *strings;
2819
2820 *pneeded = false;
2821
2822 /* Look through all the symbols. */
2823 p = obj_aout_external_syms (abfd);
2824 pend = p + obj_aout_external_sym_count (abfd);
2825 strings = obj_aout_external_strings (abfd);
2826 for (; p < pend; p++)
2827 {
2828 int type = bfd_h_get_8 (abfd, p->e_type);
2829 const char *name;
2830 struct bfd_link_hash_entry *h;
2831
4298e311
ILT		 2832 /* Ignore symbols that are not externally visible. This is an
2833 optimization only, as we check the type more thoroughly
2834 below. */
4587b578
ILT		 2835 if (((type & N_EXT) == 0
2836 || (type & N_STAB) != 0
2837 || type == N_FN)
4298e311
ILT		 2838 && type != N_WEAKA
2839 && type != N_WEAKT
2840 && type != N_WEAKD
2841 && type != N_WEAKB)
9b39ed6b
ILT		 2842 {
2843 if (type == N_WARNING
2844 || type == N_INDR)
2845 ++p;
2846 continue;
2847 }
4c3721d5
ILT		 2848
2849 name = strings + GET_WORD (abfd, p->e_strx);
2850 h = bfd_link_hash_lookup (info->hash, name, false, false, true);
2851
2852 /* We are only interested in symbols that are currently
2853 undefined or common. */
2854 if (h == (struct bfd_link_hash_entry *) NULL
2855 || (h->type != bfd_link_hash_undefined
2856 && h->type != bfd_link_hash_common))
9b39ed6b
ILT		 2857 {
2858 if (type == (N_INDR | N_EXT))
2859 ++p;
2860 continue;
2861 }
4c3721d5 2862
9b39ed6b
ILT		 2863 if (type == (N_TEXT | N_EXT)
2864 || type == (N_DATA | N_EXT)
2865 || type == (N_BSS | N_EXT)
2866 || type == (N_ABS | N_EXT)
2867 || type == (N_INDR | N_EXT))
4c3721d5
ILT		 2868 {
2869 /* This object file defines this symbol. We must link it
2870 in. This is true regardless of whether the current
2871 definition of the symbol is undefined or common. If the
2872 current definition is common, we have a case in which we
2873 have already seen an object file including
2874 int a;
2875 and this object file from the archive includes
2876 int a = 5;
f88c9008
ILT		 2877 In such a case we must include this object file.
2878
2879 FIXME: The SunOS 4.1.3 linker will pull in the archive
2880 element if the symbol is defined in the .data section,
2881 but not if it is defined in the .text section. That
2882 seems a bit crazy to me, and I haven't implemented it.
2883 However, it might be correct. */
4c3721d5
ILT		 2884 if (! (*info->callbacks->add_archive_element) (info, abfd, name))
2885 return false;
2886 *pneeded = true;
2887 return true;
2888 }
2889
9b39ed6b 2890 if (type == (N_UNDF | N_EXT))
4c3721d5
ILT		 2891 {
2892 bfd_vma value;
2893
2894 value = GET_WORD (abfd, p->e_value);
2895 if (value != 0)
2896 {
2897 /* This symbol is common in the object from the archive
2898 file. */
2899 if (h->type == bfd_link_hash_undefined)
2900 {
2901 bfd *symbfd;
e1f99f60 2902 unsigned int power;
4c3721d5
ILT		 2903
2904 symbfd = h->u.undef.abfd;
2905 if (symbfd == (bfd *) NULL)
2906 {
2907 /* This symbol was created as undefined from
2908 outside BFD. We assume that we should link
2909 in the object file. This is done for the -u
2910 option in the linker. */
2911 if (! (*info->callbacks->add_archive_element) (info,
2912 abfd,
2913 name))
2914 return false;
2915 *pneeded = true;
2916 return true;
2917 }
2918 /* Turn the current link symbol into a common
2919 symbol. It is already on the undefs list. */
2920 h->type = bfd_link_hash_common;
2921 h->u.c.size = value;
e1f99f60
ILT		 2922 if (h->u.c.size != value)
2923 {
2924 /* The size did not fit in the bitfield. */
2925 bfd_set_error (bfd_error_bad_value);
2926 return false;
2927 }
2928
2929 /* FIXME: This isn't quite right. The maximum
2930 alignment of a common symbol should be set by the
2931 architecture of the output file, not of the input
2932 file. */
2933 power = bfd_log2 (value);
2934 if (power > bfd_get_arch_info (abfd)->section_align_power)
2935 power = bfd_get_arch_info (abfd)->section_align_power;
2936 h->u.c.alignment_power = power;
2937
4c3721d5
ILT		 2938 h->u.c.section = bfd_make_section_old_way (symbfd,
2939 "COMMON");
2940 }
2941 else
2942 {
2943 /* Adjust the size of the common symbol if
2944 necessary. */
2945 if (value > h->u.c.size)
2946 h->u.c.size = value;
2947 }
2948 }
2949 }
4298e311
ILT		 2950
2951 if (type == N_WEAKA
2952 || type == N_WEAKT
2953 || type == N_WEAKD
2954 || type == N_WEAKB)
2955 {
2956 /* This symbol is weak but defined. We must pull it in if
2957 the current link symbol is undefined, but we don't want
2958 it if the current link symbol is common. */
2959 if (h->type == bfd_link_hash_undefined)
2960 {
2961 if (! (*info->callbacks->add_archive_element) (info, abfd, name))
2962 return false;
2963 *pneeded = true;
2964 return true;
2965 }
2966 }
4c3721d5
ILT		 2967 }
2968
2969 /* We do not need this object file. */
2970 return true;
2971}
2972
2973/* Add all symbols from an object file to the hash table. */
2974
2975static boolean
2976aout_link_add_symbols (abfd, info)
2977 bfd *abfd;
2978 struct bfd_link_info *info;
2979{
e85e8bfe
ILT		 2980 boolean (*add_one_symbol) PARAMS ((struct bfd_link_info *, bfd *,
2981 const char *, flagword, asection *,
2982 bfd_vma, const char *, boolean,
2983 boolean,
2984 struct bfd_link_hash_entry **));
4c3721d5
ILT		 2985 bfd_size_type sym_count;
2986 char *strings;
2987 boolean copy;
2988 struct aout_link_hash_entry **sym_hash;
2989 register struct external_nlist *p;
2990 struct external_nlist *pend;
2991
2992 sym_count = obj_aout_external_sym_count (abfd);
2993 strings = obj_aout_external_strings (abfd);
2994 if (info->keep_memory)
2995 copy = false;
2996 else
2997 copy = true;
2998
4c3721d5
ILT		 2999 /* We keep a list of the linker hash table entries that correspond
3000 to particular symbols. We could just look them up in the hash
3001 table, but keeping the list is more efficient. Perhaps this
3002 should be conditional on info->keep_memory. */
3003 sym_hash = ((struct aout_link_hash_entry **)
3004 bfd_alloc (abfd,
3005 ((size_t) sym_count
3006 * sizeof (struct aout_link_hash_entry *))));
e85e8bfe 3007 if (sym_hash == NULL && sym_count != 0)
9783e04a 3008 {
68241b2b 3009 bfd_set_error (bfd_error_no_memory);
9783e04a
DM		 3010 return false;
3011 }
4c3721d5
ILT		 3012 obj_aout_sym_hashes (abfd) = sym_hash;
3013
e85e8bfe
ILT		 3014 if ((abfd->flags & DYNAMIC) != 0
3015 && aout_backend_info (abfd)->add_dynamic_symbols != NULL)
3016 {
3017 if (! (*aout_backend_info (abfd)->add_dynamic_symbols) (abfd, info))
3018 return false;
3019 }
3020
3021 add_one_symbol = aout_backend_info (abfd)->add_one_symbol;
3022 if (add_one_symbol == NULL)
3023 add_one_symbol = _bfd_generic_link_add_one_symbol;
3024
4c3721d5
ILT		 3025 p = obj_aout_external_syms (abfd);
3026 pend = p + sym_count;
3027 for (; p < pend; p++, sym_hash++)
3028 {
3029 int type;
3030 const char *name;
3031 bfd_vma value;
3032 asection *section;
3033 flagword flags;
3034 const char *string;
3035
3036 *sym_hash = NULL;
3037
3038 type = bfd_h_get_8 (abfd, p->e_type);
3039
3040 /* Ignore debugging symbols. */
3041 if ((type & N_STAB) != 0)
3042 continue;
3043
4c3721d5
ILT		 3044 name = strings + GET_WORD (abfd, p->e_strx);
3045 value = GET_WORD (abfd, p->e_value);
3046 flags = BSF_GLOBAL;
3047 string = NULL;
3048 switch (type)
3049 {
3050 default:
3051 abort ();
4298e311
ILT		 3052
3053 case N_UNDF:
3054 case N_ABS:
3055 case N_TEXT:
3056 case N_DATA:
3057 case N_BSS:
3058 case N_FN_SEQ:
3059 case N_COMM:
3060 case N_SETV:
3061 case N_FN:
3062 /* Ignore symbols that are not externally visible. */
3063 continue;
3064 case N_INDR:
3065 /* Ignore local indirect symbol. */
3066 ++p;
3067 ++sym_hash;
3068 continue;
3069
4c3721d5 3070 case N_UNDF | N_EXT:
4298e311
ILT		 3071 if (value == 0)
3072 {
4587b578 3073 section = bfd_und_section_ptr;
4298e311
ILT		 3074 flags = 0;
3075 }
4c3721d5 3076 else
4587b578 3077 section = bfd_com_section_ptr;
4c3721d5
ILT		 3078 break;
3079 case N_ABS | N_EXT:
4587b578 3080 section = bfd_abs_section_ptr;
4c3721d5
ILT		 3081 break;
3082 case N_TEXT | N_EXT:
3083 section = obj_textsec (abfd);
3084 value -= bfd_get_section_vma (abfd, section);
3085 break;
3086 case N_DATA | N_EXT:
2cd086e3
ILT		 3087 case N_SETV | N_EXT:
3088 /* Treat N_SETV symbols as N_DATA symbol; see comment in
3089 translate_from_native_sym_flags. */
4c3721d5
ILT		 3090 section = obj_datasec (abfd);
3091 value -= bfd_get_section_vma (abfd, section);
3092 break;
3093 case N_BSS | N_EXT:
3094 section = obj_bsssec (abfd);
3095 value -= bfd_get_section_vma (abfd, section);
3096 break;
3097 case N_INDR | N_EXT:
3098 /* An indirect symbol. The next symbol is the symbol
3099 which this one really is. */
3100 BFD_ASSERT (p + 1 < pend);
3101 ++p;
3102 string = strings + GET_WORD (abfd, p->e_strx);
4587b578 3103 section = bfd_ind_section_ptr;
4c3721d5
ILT		 3104 flags |= BSF_INDIRECT;
3105 break;
3106 case N_COMM | N_EXT:
4587b578 3107 section = bfd_com_section_ptr;
4c3721d5 3108 break;
964affdc 3109 case N_SETA: case N_SETA | N_EXT:
4587b578 3110 section = bfd_abs_section_ptr;
4c3721d5
ILT		 3111 flags |= BSF_CONSTRUCTOR;
3112 break;
964affdc 3113 case N_SETT: case N_SETT | N_EXT:
4c3721d5
ILT		 3114 section = obj_textsec (abfd);
3115 flags |= BSF_CONSTRUCTOR;
3116 value -= bfd_get_section_vma (abfd, section);
3117 break;
964affdc 3118 case N_SETD: case N_SETD | N_EXT:
4c3721d5
ILT		 3119 section = obj_datasec (abfd);
3120 flags |= BSF_CONSTRUCTOR;
3121 value -= bfd_get_section_vma (abfd, section);
3122 break;
964affdc 3123 case N_SETB: case N_SETB | N_EXT:
4c3721d5
ILT		 3124 section = obj_bsssec (abfd);
3125 flags |= BSF_CONSTRUCTOR;
3126 value -= bfd_get_section_vma (abfd, section);
3127 break;
3128 case N_WARNING:
3129 /* A warning symbol. The next symbol is the one to warn
3130 about. */
3131 BFD_ASSERT (p + 1 < pend);
3132 ++p;
3133 string = name;
3134 name = strings + GET_WORD (abfd, p->e_strx);
4587b578 3135 section = bfd_und_section_ptr;
4c3721d5
ILT		 3136 flags |= BSF_WARNING;
3137 break;
4298e311 3138 case N_WEAKU:
4587b578 3139 section = bfd_und_section_ptr;
4298e311
ILT		 3140 flags = BSF_WEAK;
3141 break;
3142 case N_WEAKA:
4587b578 3143 section = bfd_abs_section_ptr;
4298e311
ILT		 3144 flags = BSF_WEAK;
3145 break;
3146 case N_WEAKT:
3147 section = obj_textsec (abfd);
3148 value -= bfd_get_section_vma (abfd, section);
3149 flags = BSF_WEAK;
3150 break;
3151 case N_WEAKD:
3152 section = obj_datasec (abfd);
3153 value -= bfd_get_section_vma (abfd, section);
3154 flags = BSF_WEAK;
3155 break;
3156 case N_WEAKB:
3157 section = obj_bsssec (abfd);
3158 value -= bfd_get_section_vma (abfd, section);
3159 flags = BSF_WEAK;
3160 break;
4c3721d5
ILT		 3161 }
3162
e85e8bfe 3163 if (! ((*add_one_symbol)
e68de5d5 3164 (info, abfd, name, flags, section, value, string, copy, false,
ec099b4b 3165 (struct bfd_link_hash_entry **) sym_hash)))
4c3721d5 3166 return false;
53155af1 3167
e1f99f60
ILT		 3168 /* Restrict the maximum alignment of a common symbol based on
3169 the architecture, since a.out has no way to represent
3170 alignment requirements of a section in a .o file. FIXME:
3171 This isn't quite right: it should use the architecture of the
3172 output file, not the input files. */
3173 if ((*sym_hash)->root.type == bfd_link_hash_common
3174 && ((*sym_hash)->root.u.c.alignment_power >
3175 bfd_get_arch_info (abfd)->section_align_power))
3176 (*sym_hash)->root.u.c.alignment_power =
3177 bfd_get_arch_info (abfd)->section_align_power;
3178
f4945271
ILT		 3179 /* If this is a set symbol, and we are not building sets, then
3180 it is possible for the hash entry to not have been set. In
3181 such a case, treat the symbol as not globally defined. */
3182 if ((*sym_hash)->root.type == bfd_link_hash_new)
3183 {
3184 BFD_ASSERT ((flags & BSF_CONSTRUCTOR) != 0);
3185 *sym_hash = NULL;
3186 }
3187
53155af1
ILT		 3188 if (type == (N_INDR | N_EXT) || type == N_WARNING)
3189 ++sym_hash;
4c3721d5
ILT		 3190 }
3191
3192 return true;
3193}
3194
3195/* During the final link step we need to pass around a bunch of
3196 information, so we do it in an instance of this structure. */
3197
3198struct aout_final_link_info
3199{
3200 /* General link information. */
3201 struct bfd_link_info *info;
3202 /* Output bfd. */
3203 bfd *output_bfd;
3204 /* Reloc file positions. */
3205 file_ptr treloff, dreloff;
3206 /* File position of symbols. */
3207 file_ptr symoff;
3208 /* String table. */
1afd2380
ILT		 3209 struct bfd_strtab_hash *strtab;
3210 /* A buffer large enough to hold the contents of any section. */
3211 bfd_byte *contents;
3212 /* A buffer large enough to hold the relocs of any section. */
3213 PTR relocs;
3214 /* A buffer large enough to hold the symbol map of any input BFD. */
3215 int *symbol_map;
3216 /* A buffer large enough to hold output symbols of any input BFD. */
3217 struct external_nlist *output_syms;
4c3721d5
ILT		 3218};
3219
3220static boolean aout_link_input_bfd
3221 PARAMS ((struct aout_final_link_info *, bfd *input_bfd));
3222static boolean aout_link_write_symbols
1afd2380 3223 PARAMS ((struct aout_final_link_info *, bfd *input_bfd));
4c3721d5
ILT		 3224static boolean aout_link_write_other_symbol
3225 PARAMS ((struct aout_link_hash_entry *, PTR));
3226static boolean aout_link_input_section
3227 PARAMS ((struct aout_final_link_info *, bfd *input_bfd,
3228 asection *input_section, file_ptr *reloff_ptr,
1afd2380 3229 bfd_size_type rel_size));
4c3721d5
ILT		 3230static boolean aout_link_input_section_std
3231 PARAMS ((struct aout_final_link_info *, bfd *input_bfd,
3232 asection *input_section, struct reloc_std_external *,
1afd2380 3233 bfd_size_type rel_size, bfd_byte *contents));
4c3721d5
ILT		 3234static boolean aout_link_input_section_ext
3235 PARAMS ((struct aout_final_link_info *, bfd *input_bfd,
3236 asection *input_section, struct reloc_ext_external *,
1afd2380 3237 bfd_size_type rel_size, bfd_byte *contents));
4c3721d5
ILT		 3238static INLINE asection *aout_reloc_index_to_section
3239 PARAMS ((bfd *, int));
ec099b4b
ILT		 3240static boolean aout_link_reloc_link_order
3241 PARAMS ((struct aout_final_link_info *, asection *,
3242 struct bfd_link_order *));
4c3721d5
ILT		 3243
3244/* Do the final link step. This is called on the output BFD. The
3245 INFO structure should point to a list of BFDs linked through the
3246 link_next field which can be used to find each BFD which takes part
3247 in the output. Also, each section in ABFD should point to a list
3248 of bfd_link_order structures which list all the input sections for
3249 the output section. */
3250
3251boolean
3252NAME(aout,final_link) (abfd, info, callback)
3253 bfd *abfd;
3254 struct bfd_link_info *info;
3255 void (*callback) PARAMS ((bfd *, file_ptr *, file_ptr *, file_ptr *));
3256{
3257 struct aout_final_link_info aout_info;
3258 register bfd *sub;
1afd2380
ILT		 3259 bfd_size_type trsize, drsize;
3260 size_t max_contents_size;
3261 size_t max_relocs_size;
3262 size_t max_sym_count;
4c3721d5
ILT		 3263 bfd_size_type text_size;
3264 file_ptr text_end;
3265 register struct bfd_link_order *p;
3266 asection *o;
ec099b4b 3267 boolean have_link_order_relocs;
4c3721d5
ILT		 3268
3269 aout_info.info = info;
3270 aout_info.output_bfd = abfd;
1afd2380
ILT		 3271 aout_info.contents = NULL;
3272 aout_info.relocs = NULL;
3273
3274 /* Figure out the largest section size. Also, if generating
3275 relocateable output, count the relocs. */
3276 trsize = 0;
3277 drsize = 0;
3278 max_contents_size = 0;
3279 max_relocs_size = 0;
3280 max_sym_count = 0;
3281 for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
4c3721d5 3282 {
1afd2380 3283 size_t sz;
4c3721d5 3284
1afd2380 3285 if (info->relocateable)
4c3721d5 3286 {
6c8fa8e6 3287 if (bfd_get_flavour (sub) == bfd_target_aout_flavour)
4c3721d5
ILT		 3288 {
3289 trsize += exec_hdr (sub)->a_trsize;
3290 drsize += exec_hdr (sub)->a_drsize;
3291 }
3292 else
3293 {
3294 /* FIXME: We need to identify the .text and .data sections
3295 and call get_reloc_upper_bound and canonicalize_reloc to
3296 work out the number of relocs needed, and then multiply
3297 by the reloc size. */
3298 abort ();
3299 }
3300 }
1afd2380
ILT		 3301
3302 sz = bfd_section_size (sub, obj_textsec (sub));
3303 if (sz > max_contents_size)
3304 max_contents_size = sz;
3305 sz = bfd_section_size (sub, obj_datasec (sub));
3306 if (sz > max_contents_size)
3307 max_contents_size = sz;
3308
3309 sz = exec_hdr (sub)->a_trsize;
3310 if (sz > max_relocs_size)
3311 max_relocs_size = sz;
3312 sz = exec_hdr (sub)->a_drsize;
3313 if (sz > max_relocs_size)
3314 max_relocs_size = sz;
3315
3316 sz = obj_aout_external_sym_count (sub);
3317 if (sz > max_sym_count)
3318 max_sym_count = sz;
3319 }
3320
3321 if (info->relocateable)
3322 {
ec6b18c4
ILT		 3323 if (obj_textsec (abfd) != (asection *) NULL)
3324 trsize += (_bfd_count_link_order_relocs (obj_textsec (abfd)
3325 ->link_order_head)
3326 * obj_reloc_entry_size (abfd));
ec6b18c4
ILT		 3327 if (obj_datasec (abfd) != (asection *) NULL)
3328 drsize += (_bfd_count_link_order_relocs (obj_datasec (abfd)
3329 ->link_order_head)
3330 * obj_reloc_entry_size (abfd));
4c3721d5
ILT		 3331 }
3332
1afd2380
ILT		 3333 exec_hdr (abfd)->a_trsize = trsize;
3334 exec_hdr (abfd)->a_drsize = drsize;
3335
964affdc
DM		 3336 exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd);
3337
4c3721d5
ILT		 3338 /* Adjust the section sizes and vmas according to the magic number.
3339 This sets a_text, a_data and a_bss in the exec_hdr and sets the
3340 filepos for each section. */
3341 if (! NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end))
1afd2380 3342 goto error_return;
4c3721d5
ILT		 3343
3344 /* The relocation and symbol file positions differ among a.out
3345 targets. We are passed a callback routine from the backend
3346 specific code to handle this.
3347 FIXME: At this point we do not know how much space the symbol
3348 table will require. This will not work for any (nonstandard)
3349 a.out target that needs to know the symbol table size before it
3350 can compute the relocation file positions. This may or may not
3351 be the case for the hp300hpux target, for example. */
3352 (*callback) (abfd, &aout_info.treloff, &aout_info.dreloff,
3353 &aout_info.symoff);
3354 obj_textsec (abfd)->rel_filepos = aout_info.treloff;
3355 obj_datasec (abfd)->rel_filepos = aout_info.dreloff;
3356 obj_sym_filepos (abfd) = aout_info.symoff;
3357
3358 /* We keep a count of the symbols as we output them. */
3359 obj_aout_external_sym_count (abfd) = 0;
3360
3361 /* We accumulate the string table as we write out the symbols. */
1afd2380
ILT		 3362 aout_info.strtab = _bfd_stringtab_init ();
3363 if (aout_info.strtab == NULL)
3364 goto error_return;
3365
3366 /* Allocate buffers to hold section contents and relocs. */
3367 aout_info.contents = (bfd_byte *) malloc (max_contents_size);
3368 aout_info.relocs = (PTR) malloc (max_relocs_size);
3369 aout_info.symbol_map = (int *) malloc (max_sym_count * sizeof (int *));
3370 aout_info.output_syms = ((struct external_nlist *)
3371 malloc ((max_sym_count + 1)
3372 * sizeof (struct external_nlist)));
3373 if ((aout_info.contents == NULL && max_contents_size != 0)
3374 || (aout_info.relocs == NULL && max_relocs_size != 0)
3375 || (aout_info.symbol_map == NULL && max_sym_count != 0)
3376 || aout_info.output_syms == NULL)
3377 {
3378 bfd_set_error (bfd_error_no_memory);
3379 goto error_return;
3380 }
4c3721d5
ILT		 3381
3382 /* The most time efficient way to do the link would be to read all
3383 the input object files into memory and then sort out the
3384 information into the output file. Unfortunately, that will
3385 probably use too much memory. Another method would be to step
3386 through everything that composes the text section and write it
3387 out, and then everything that composes the data section and write
3388 it out, and then write out the relocs, and then write out the
3389 symbols. Unfortunately, that requires reading stuff from each
3390 input file several times, and we will not be able to keep all the
3391 input files open simultaneously, and reopening them will be slow.
3392
3393 What we do is basically process one input file at a time. We do
3394 everything we need to do with an input file once--copy over the
3395 section contents, handle the relocation information, and write
3396 out the symbols--and then we throw away the information we read
3397 from it. This approach requires a lot of lseeks of the output
3398 file, which is unfortunate but still faster than reopening a lot
3399 of files.
3400
3401 We use the output_has_begun field of the input BFDs to see
3402 whether we have already handled it. */
3403 for (sub = info->input_bfds; sub != (bfd *) NULL; sub = sub->link_next)
3404 sub->output_has_begun = false;
3405
ec099b4b 3406 have_link_order_relocs = false;
4c3721d5
ILT		 3407 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
3408 {
4c3721d5
ILT		 3409 for (p = o->link_order_head;
3410 p != (struct bfd_link_order *) NULL;
3411 p = p->next)
3412 {
e68de5d5
ILT		 3413 if (p->type == bfd_indirect_link_order
3414 && (bfd_get_flavour (p->u.indirect.section->owner)
3415 == bfd_target_aout_flavour))
4c3721d5 3416 {
e68de5d5
ILT		 3417 bfd *input_bfd;
3418
4c3721d5 3419 input_bfd = p->u.indirect.section->owner;
e68de5d5 3420 if (! input_bfd->output_has_begun)
4c3721d5 3421 {
e68de5d5 3422 if (! aout_link_input_bfd (&aout_info, input_bfd))
1afd2380 3423 goto error_return;
e68de5d5 3424 input_bfd->output_has_begun = true;
4c3721d5 3425 }
e68de5d5 3426 }
ec099b4b
ILT		 3427 else if (p->type == bfd_section_reloc_link_order
3428 || p->type == bfd_symbol_reloc_link_order)
3429 {
3430 /* These are handled below. */
3431 have_link_order_relocs = true;
3432 }
e68de5d5
ILT		 3433 else
3434 {
4c3721d5 3435 if (! _bfd_default_link_order (abfd, info, o, p))
1afd2380 3436 goto error_return;
4c3721d5
ILT		 3437 }
3438 }
3439 }
3440
3441 /* Write out any symbols that we have not already written out. */
3442 aout_link_hash_traverse (aout_hash_table (info),
3443 aout_link_write_other_symbol,
3444 (PTR) &aout_info);
3445
ec099b4b
ILT		 3446 /* Now handle any relocs we were asked to create by the linker.
3447 These did not come from any input file. We must do these after
3448 we have written out all the symbols, so that we know the symbol
3449 indices to use. */
3450 if (have_link_order_relocs)
3451 {
3452 for (o = abfd->sections; o != (asection *) NULL; o = o->next)
3453 {
3454 for (p = o->link_order_head;
3455 p != (struct bfd_link_order *) NULL;
3456 p = p->next)
3457 {
3458 if (p->type == bfd_section_reloc_link_order
3459 || p->type == bfd_symbol_reloc_link_order)
3460 {
3461 if (! aout_link_reloc_link_order (&aout_info, o, p))
1afd2380 3462 goto error_return;
ec099b4b
ILT		 3463 }
3464 }
3465 }
3466 }
3467
1afd2380
ILT		 3468 if (aout_info.contents != NULL)
3469 {
3470 free (aout_info.contents);
3471 aout_info.contents = NULL;
3472 }
3473 if (aout_info.relocs != NULL)
3474 {
3475 free (aout_info.relocs);
3476 aout_info.relocs = NULL;
3477 }
3478 if (aout_info.symbol_map != NULL)
3479 {
3480 free (aout_info.symbol_map);
3481 aout_info.symbol_map = NULL;
3482 }
3483 if (aout_info.output_syms != NULL)
3484 {
3485 free (aout_info.output_syms);
3486 aout_info.output_syms = NULL;
3487 }
3488
e85e8bfe
ILT		 3489 /* Finish up any dynamic linking we may be doing. */
3490 if (aout_backend_info (abfd)->finish_dynamic_link != NULL)
3491 {
3492 if (! (*aout_backend_info (abfd)->finish_dynamic_link) (abfd, info))
1afd2380 3493 goto error_return;
e85e8bfe
ILT		 3494 }
3495
4c3721d5
ILT		 3496 /* Update the header information. */
3497 abfd->symcount = obj_aout_external_sym_count (abfd);
3498 exec_hdr (abfd)->a_syms = abfd->symcount * EXTERNAL_NLIST_SIZE;
3499 obj_str_filepos (abfd) = obj_sym_filepos (abfd) + exec_hdr (abfd)->a_syms;
3500 obj_textsec (abfd)->reloc_count =
3501 exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd);
3502 obj_datasec (abfd)->reloc_count =
3503 exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd);
3504
3505 /* Write out the string table. */
3506 if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0)
1afd2380
ILT		 3507 goto error_return;
3508 return emit_stringtab (abfd, aout_info.strtab);
3509
3510 error_return:
3511 if (aout_info.contents != NULL)
3512 free (aout_info.contents);
3513 if (aout_info.relocs != NULL)
3514 free (aout_info.relocs);
3515 if (aout_info.symbol_map != NULL)
3516 free (aout_info.symbol_map);
3517 if (aout_info.output_syms != NULL)
3518 free (aout_info.output_syms);
3519 return false;
4c3721d5
ILT		 3520}
3521
3522/* Link an a.out input BFD into the output file. */
3523
3524static boolean
3525aout_link_input_bfd (finfo, input_bfd)
3526 struct aout_final_link_info *finfo;
3527 bfd *input_bfd;
3528{
3529 bfd_size_type sym_count;
4c3721d5
ILT		 3530
3531 BFD_ASSERT (bfd_get_format (input_bfd) == bfd_object);
3532
e85e8bfe
ILT		 3533 /* If this is a dynamic object, it may need special handling. */
3534 if ((input_bfd->flags & DYNAMIC) != 0
3535 && aout_backend_info (input_bfd)->link_dynamic_object != NULL)
3536 {
3537 return ((*aout_backend_info (input_bfd)->link_dynamic_object)
3538 (finfo->info, input_bfd));
3539 }
3540
4c3721d5
ILT		 3541 /* Get the symbols. We probably have them already, unless
3542 finfo->info->keep_memory is false. */
5c8444f8 3543 if (! aout_get_external_symbols (input_bfd))
4c3721d5
ILT		 3544 return false;
3545
3546 sym_count = obj_aout_external_sym_count (input_bfd);
4c3721d5 3547
1afd2380
ILT		 3548 /* Write out the symbols and get a map of the new indices. The map
3549 is placed into finfo->symbol_map. */
3550 if (! aout_link_write_symbols (finfo, input_bfd))
3551 return false;
4c3721d5 3552
1afd2380
ILT		 3553 /* Relocate and write out the sections. These functions use the
3554 symbol map created by aout_link_write_symbols. */
4c3721d5
ILT		 3555 if (! aout_link_input_section (finfo, input_bfd,
3556 obj_textsec (input_bfd),
3557 &finfo->treloff,
1afd2380 3558 exec_hdr (input_bfd)->a_trsize)
4c3721d5
ILT		 3559 || ! aout_link_input_section (finfo, input_bfd,
3560 obj_datasec (input_bfd),
3561 &finfo->dreloff,
1afd2380
ILT		 3562 exec_hdr (input_bfd)->a_drsize))
3563 return false;
4c3721d5
ILT		 3564
3565 /* If we are not keeping memory, we don't need the symbols any
3566 longer. We still need them if we are keeping memory, because the
3567 strings in the hash table point into them. */
3568 if (! finfo->info->keep_memory)
3569 {
3570 if (! aout_link_free_symbols (input_bfd))
1afd2380 3571 return false;
4c3721d5
ILT		 3572 }
3573
3574 return true;
3575}
3576
3577/* Adjust and write out the symbols for an a.out file. Set the new
3578 symbol indices into a symbol_map. */
3579
3580static boolean
1afd2380 3581aout_link_write_symbols (finfo, input_bfd)
4c3721d5
ILT		 3582 struct aout_final_link_info *finfo;
3583 bfd *input_bfd;
4c3721d5
ILT		 3584{
3585 bfd *output_bfd;
3586 bfd_size_type sym_count;
3587 char *strings;
3588 enum bfd_link_strip strip;
3589 enum bfd_link_discard discard;
4c3721d5 3590 struct external_nlist *outsym;
d17fc4c9 3591 bfd_size_type strtab_index;
4c3721d5
ILT		 3592 register struct external_nlist *sym;
3593 struct external_nlist *sym_end;
3594 struct aout_link_hash_entry **sym_hash;
1afd2380 3595 int *symbol_map;
4c3721d5 3596 boolean pass;
53155af1 3597 boolean skip_indirect;
4c3721d5
ILT		 3598
3599 output_bfd = finfo->output_bfd;
3600 sym_count = obj_aout_external_sym_count (input_bfd);
3601 strings = obj_aout_external_strings (input_bfd);
3602 strip = finfo->info->strip;
3603 discard = finfo->info->discard;
1afd2380 3604 outsym = finfo->output_syms;
4c3721d5
ILT		 3605
3606 /* First write out a symbol for this object file, unless we are
3607 discarding such symbols. */
3608 if (strip != strip_all
3609 && (strip != strip_some
3610 || bfd_hash_lookup (finfo->info->keep_hash, input_bfd->filename,
3611 false, false) != NULL)
3612 && discard != discard_all)
3613 {
3614 bfd_h_put_8 (output_bfd, N_TEXT, outsym->e_type);
3615 bfd_h_put_8 (output_bfd, 0, outsym->e_other);
3616 bfd_h_put_16 (output_bfd, (bfd_vma) 0, outsym->e_desc);
1afd2380 3617 strtab_index = add_to_stringtab (output_bfd, finfo->strtab,
d17fc4c9
ILT		 3618 input_bfd->filename, false);
3619 if (strtab_index == (bfd_size_type) -1)
1afd2380 3620 return false;
d17fc4c9 3621 PUT_WORD (output_bfd, strtab_index, outsym->e_strx);
4c3721d5 3622 PUT_WORD (output_bfd,
2edc8357
ILT		 3623 (bfd_get_section_vma (output_bfd,
3624 obj_textsec (input_bfd)->output_section)
3625 + obj_textsec (input_bfd)->output_offset),
4c3721d5
ILT		 3626 outsym->e_value);
3627 ++obj_aout_external_sym_count (output_bfd);
3628 ++outsym;
3629 }
3630
3631 pass = false;
53155af1 3632 skip_indirect = false;
4c3721d5
ILT		 3633 sym = obj_aout_external_syms (input_bfd);
3634 sym_end = sym + sym_count;
3635 sym_hash = obj_aout_sym_hashes (input_bfd);
1afd2380 3636 symbol_map = finfo->symbol_map;
4c3721d5
ILT		 3637 for (; sym < sym_end; sym++, sym_hash++, symbol_map++)
3638 {
3639 const char *name;
3640 int type;
d6d6b18a 3641 struct aout_link_hash_entry *h;
4c3721d5
ILT		 3642 boolean skip;
3643 asection *symsec;
3644 bfd_vma val = 0;
d17fc4c9 3645 boolean copy;
4c3721d5
ILT		 3646
3647 *symbol_map = -1;
3648
3649 type = bfd_h_get_8 (input_bfd, sym->e_type);
3650 name = strings + GET_WORD (input_bfd, sym->e_strx);
3651
d6d6b18a
ILT		 3652 h = NULL;
3653
4c3721d5
ILT		 3654 if (pass)
3655 {
53155af1
ILT		 3656 /* Pass this symbol through. It is the target of an
3657 indirect or warning symbol. */
4c3721d5
ILT		 3658 val = GET_WORD (input_bfd, sym->e_value);
3659 pass = false;
3660 }
53155af1
ILT		 3661 else if (skip_indirect)
3662 {
3663 /* Skip this symbol, which is the target of an indirect
3664 symbol that we have changed to no longer be an indirect
3665 symbol. */
3666 skip_indirect = false;
3667 continue;
3668 }
4c3721d5
ILT		 3669 else
3670 {
53155af1 3671 struct aout_link_hash_entry *hresolve;
4c3721d5
ILT		 3672
3673 /* We have saved the hash table entry for this symbol, if
3674 there is one. Note that we could just look it up again
3675 in the hash table, provided we first check that it is an
3676 external symbol. */
3677 h = *sym_hash;
3678
3a5b50f4
ILT		 3679 /* If this is an indirect or warning symbol, then change
3680 hresolve to the base symbol. We also change *sym_hash so
3681 that the relocation routines relocate against the real
3682 symbol. */
53155af1
ILT		 3683 hresolve = h;
3684 if (h != (struct aout_link_hash_entry *) NULL
3a5b50f4
ILT		 3685 && (h->root.type == bfd_link_hash_indirect
3686 || h->root.type == bfd_link_hash_warning))
53155af1
ILT		 3687 {
3688 hresolve = (struct aout_link_hash_entry *) h->root.u.i.link;
118e8d1c
ILT		 3689 while (hresolve->root.type == bfd_link_hash_indirect
3690 || hresolve->root.type == bfd_link_hash_warning)
53155af1
ILT		 3691 hresolve = ((struct aout_link_hash_entry *)
3692 hresolve->root.u.i.link);
3693 *sym_hash = hresolve;
3694 }
3695
4c3721d5
ILT		 3696 /* If the symbol has already been written out, skip it. */
3697 if (h != (struct aout_link_hash_entry *) NULL
e85e8bfe 3698 && h->root.type != bfd_link_hash_warning
35fee729 3699 && h->written)
4c3721d5 3700 {
e85e8bfe
ILT		 3701 if ((type & N_TYPE) == N_INDR)
3702 skip_indirect = true;
4c3721d5
ILT		 3703 *symbol_map = h->indx;
3704 continue;
3705 }
3706
3707 /* See if we are stripping this symbol. */
3708 skip = false;
3709 switch (strip)
3710 {
3711 case strip_none:
3712 break;
3713 case strip_debugger:
3714 if ((type & N_STAB) != 0)
3715 skip = true;
3716 break;
3717 case strip_some:
3718 if (bfd_hash_lookup (finfo->info->keep_hash, name, false, false)
3719 == NULL)
3720 skip = true;
3721 break;
3722 case strip_all:
3723 skip = true;
3724 break;
3725 }
3726 if (skip)
3727 {
3728 if (h != (struct aout_link_hash_entry *) NULL)
35fee729 3729 h->written = true;
4c3721d5
ILT		 3730 continue;
3731 }
3732
3733 /* Get the value of the symbol. */
4298e311
ILT		 3734 if ((type & N_TYPE) == N_TEXT
3735 || type == N_WEAKT)
4c3721d5 3736 symsec = obj_textsec (input_bfd);
4298e311
ILT		 3737 else if ((type & N_TYPE) == N_DATA
3738 || type == N_WEAKD)
4c3721d5 3739 symsec = obj_datasec (input_bfd);
4298e311
ILT		 3740 else if ((type & N_TYPE) == N_BSS
3741 || type == N_WEAKB)
4c3721d5 3742 symsec = obj_bsssec (input_bfd);
4298e311
ILT		 3743 else if ((type & N_TYPE) == N_ABS
3744 || type == N_WEAKA)
4587b578 3745 symsec = bfd_abs_section_ptr;
53155af1
ILT		 3746 else if (((type & N_TYPE) == N_INDR
3747 && (hresolve == (struct aout_link_hash_entry *) NULL
3748 || (hresolve->root.type != bfd_link_hash_defined
3749 && hresolve->root.type != bfd_link_hash_common)))
4c3721d5
ILT		 3750 || type == N_WARNING)
3751 {
53155af1
ILT		 3752 /* Pass the next symbol through unchanged. The
3753 condition above for indirect symbols is so that if
3754 the indirect symbol was defined, we output it with
3755 the correct definition so the debugger will
3756 understand it. */
4c3721d5
ILT		 3757 pass = true;
3758 val = GET_WORD (input_bfd, sym->e_value);
3759 symsec = NULL;
3760 }
3761 else if ((type & N_STAB) != 0)
3762 {
3763 val = GET_WORD (input_bfd, sym->e_value);
3764 symsec = NULL;
3765 }
3766 else
3767 {
53155af1
ILT		 3768 /* If we get here with an indirect symbol, it means that
3769 we are outputting it with a real definition. In such
3770 a case we do not want to output the next symbol,
3771 which is the target of the indirection. */
3772 if ((type & N_TYPE) == N_INDR)
3773 skip_indirect = true;
3774
f4945271
ILT		 3775 symsec = NULL;
3776
53155af1
ILT		 3777 /* We need to get the value from the hash table. We use
3778 hresolve so that if we have defined an indirect
3779 symbol we output the final definition. */
4c3721d5 3780 if (h == (struct aout_link_hash_entry *) NULL)
f4945271
ILT		 3781 {
3782 switch (type & N_TYPE)
3783 {
3784 case N_SETT:
3785 symsec = obj_textsec (input_bfd);
3786 break;
3787 case N_SETD:
3788 symsec = obj_datasec (input_bfd);
3789 break;
3790 case N_SETB:
3791 symsec = obj_bsssec (input_bfd);
3792 break;
3793 case N_SETA:
3794 symsec = bfd_abs_section_ptr;
3795 break;
3796 default:
3797 val = 0;
3798 break;
3799 }
3800 }
53155af1 3801 else if (hresolve->root.type == bfd_link_hash_defined)
4c3721d5 3802 {
53155af1 3803 asection *input_section;
4c3721d5
ILT		 3804 asection *output_section;
3805
3806 /* This case means a common symbol which was turned
3807 into a defined symbol. */
53155af1
ILT		 3808 input_section = hresolve->root.u.def.section;
3809 output_section = input_section->output_section;
4587b578 3810 BFD_ASSERT (bfd_is_abs_section (output_section)
4c3721d5 3811 || output_section->owner == output_bfd);
53155af1 3812 val = (hresolve->root.u.def.value
4c3721d5 3813 + bfd_get_section_vma (output_bfd, output_section)
53155af1 3814 + input_section->output_offset);
4c3721d5
ILT		 3815
3816 /* Get the correct type based on the section. If
3817 this is a constructed set, force it to be
3818 globally visible. */
3819 if (type == N_SETT
3820 || type == N_SETD
3821 || type == N_SETB
3822 || type == N_SETA)
3823 type |= N_EXT;
3824
3825 type &=~ N_TYPE;
3826
3827 if (output_section == obj_textsec (output_bfd))
3828 type |= N_TEXT;
3829 else if (output_section == obj_datasec (output_bfd))
3830 type |= N_DATA;
3831 else if (output_section == obj_bsssec (output_bfd))
3832 type |= N_BSS;
3833 else
3834 type |= N_ABS;
3835 }
53155af1
ILT		 3836 else if (hresolve->root.type == bfd_link_hash_common)
3837 val = hresolve->root.u.c.size;
4298e311
ILT		 3838 else if (hresolve->root.type == bfd_link_hash_weak)
3839 {
3840 val = 0;
3841 type = N_WEAKU;
3842 }
4c3721d5
ILT		 3843 else
3844 val = 0;
4c3721d5
ILT		 3845 }
3846 if (symsec != (asection *) NULL)
3847 val = (symsec->output_section->vma
3848 + symsec->output_offset
3849 + (GET_WORD (input_bfd, sym->e_value)
3850 - symsec->vma));
3851
3852 /* If this is a global symbol set the written flag, and if
3853 it is a local symbol see if we should discard it. */
3854 if (h != (struct aout_link_hash_entry *) NULL)
3855 {
35fee729 3856 h->written = true;
4c3721d5
ILT		 3857 h->indx = obj_aout_external_sym_count (output_bfd);
3858 }
f4945271
ILT		 3859 else if ((type & N_TYPE) != N_SETT
3860 && (type & N_TYPE) != N_SETD
3861 && (type & N_TYPE) != N_SETB
3862 && (type & N_TYPE) != N_SETA)
4c3721d5
ILT		 3863 {
3864 switch (discard)
3865 {
3866 case discard_none:
3867 break;
3868 case discard_l:
3869 if (*name == *finfo->info->lprefix
3870 && (finfo->info->lprefix_len == 1
3871 || strncmp (name, finfo->info->lprefix,
3872 finfo->info->lprefix_len) == 0))
3873 skip = true;
3874 break;
3875 case discard_all:
3876 skip = true;
3877 break;
3878 }
3879 if (skip)
3880 {
3881 pass = false;
3882 continue;
3883 }
3884 }
3885 }
3886
3887 /* Copy this symbol into the list of symbols we are going to
3888 write out. */
3889 bfd_h_put_8 (output_bfd, type, outsym->e_type);
3890 bfd_h_put_8 (output_bfd, bfd_h_get_8 (input_bfd, sym->e_other),
3891 outsym->e_other);
3892 bfd_h_put_16 (output_bfd, bfd_h_get_16 (input_bfd, sym->e_desc),
3893 outsym->e_desc);
d17fc4c9 3894 copy = false;
d6d6b18a
ILT		 3895 if (! finfo->info->keep_memory)
3896 {
3897 /* name points into a string table which we are going to
3898 free. If there is a hash table entry, use that string.
3899 Otherwise, copy name into memory. */
3900 if (h != (struct aout_link_hash_entry *) NULL)
1afd2380 3901 name = h->root.root.string;
d6d6b18a 3902 else
d17fc4c9 3903 copy = true;
d6d6b18a 3904 }
1afd2380 3905 strtab_index = add_to_stringtab (output_bfd, finfo->strtab,
d17fc4c9
ILT		 3906 name, copy);
3907 if (strtab_index == (bfd_size_type) -1)
1afd2380 3908 return false;
d17fc4c9 3909 PUT_WORD (output_bfd, strtab_index, outsym->e_strx);
4c3721d5
ILT		 3910 PUT_WORD (output_bfd, val, outsym->e_value);
3911 *symbol_map = obj_aout_external_sym_count (output_bfd);
3912 ++obj_aout_external_sym_count (output_bfd);
3913 ++outsym;
3914 }
3915
3916 /* Write out the output symbols we have just constructed. */
1afd2380 3917 if (outsym > finfo->output_syms)
4c3721d5
ILT		 3918 {
3919 bfd_size_type outsym_count;
3920
3921 if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0)
1afd2380
ILT		 3922 return false;
3923 outsym_count = outsym - finfo->output_syms;
3924 if (bfd_write ((PTR) finfo->output_syms,
3925 (bfd_size_type) EXTERNAL_NLIST_SIZE,
4c3721d5
ILT		 3926 (bfd_size_type) outsym_count, output_bfd)
3927 != outsym_count * EXTERNAL_NLIST_SIZE)
1afd2380 3928 return false;
4c3721d5
ILT		 3929 finfo->symoff += outsym_count * EXTERNAL_NLIST_SIZE;
3930 }
3931
3932 return true;
3933}
3934
3935/* Write out a symbol that was not associated with an a.out input
3936 object. */
3937
3938static boolean
3939aout_link_write_other_symbol (h, data)
3940 struct aout_link_hash_entry *h;
3941 PTR data;
3942{
3943 struct aout_final_link_info *finfo = (struct aout_final_link_info *) data;
3944 bfd *output_bfd;
3945 int type;
3946 bfd_vma val;
3947 struct external_nlist outsym;
d17fc4c9 3948 bfd_size_type indx;
4c3721d5 3949
e85e8bfe
ILT		 3950 output_bfd = finfo->output_bfd;
3951
3952 if (aout_backend_info (output_bfd)->write_dynamic_symbol != NULL)
3953 {
3954 if (! ((*aout_backend_info (output_bfd)->write_dynamic_symbol)
3955 (output_bfd, finfo->info, h)))
3956 {
3957 /* FIXME: No way to handle errors. */
3958 abort ();
3959 }
3960 }
3961
35fee729 3962 if (h->written)
4c3721d5
ILT		 3963 return true;
3964
35fee729 3965 h->written = true;
9783e04a
DM		 3966
3967 if (finfo->info->strip == strip_all
3968 || (finfo->info->strip == strip_some
3969 && bfd_hash_lookup (finfo->info->keep_hash, h->root.root.string,
3970 false, false) == NULL))
3971 return true;
3972
4c3721d5
ILT		 3973 switch (h->root.type)
3974 {
3975 default:
4c3721d5
ILT		 3976 abort ();
3977 /* Avoid variable not initialized warnings. */
3978 return true;
f4945271
ILT		 3979 case bfd_link_hash_new:
3980 /* This can happen for set symbols when sets are not being
3981 built. */
3982 return true;
4c3721d5
ILT		 3983 case bfd_link_hash_undefined:
3984 type = N_UNDF | N_EXT;
3985 val = 0;
3986 break;
3987 case bfd_link_hash_defined:
3988 {
3989 asection *sec;
3990
4f019d04 3991 sec = h->root.u.def.section->output_section;
4587b578 3992 BFD_ASSERT (bfd_is_abs_section (sec)
4c3721d5
ILT		 3993 || sec->owner == output_bfd);
3994 if (sec == obj_textsec (output_bfd))
3995 type = N_TEXT | N_EXT;
3996 else if (sec == obj_datasec (output_bfd))
3997 type = N_DATA | N_EXT;
3998 else if (sec == obj_bsssec (output_bfd))
3999 type = N_BSS | N_EXT;
4000 else
4001 type = N_ABS | N_EXT;
4002 val = (h->root.u.def.value
4f019d04
ILT		 4003 + sec->vma
4004 + h->root.u.def.section->output_offset);
4c3721d5
ILT		 4005 }
4006 break;
4007 case bfd_link_hash_common:
4008 type = N_UNDF | N_EXT;
4009 val = h->root.u.c.size;
4010 break;
4298e311
ILT		 4011 case bfd_link_hash_weak:
4012 type = N_WEAKU;
4013 val = 0;
4c3721d5
ILT		 4014 case bfd_link_hash_indirect:
4015 case bfd_link_hash_warning:
4016 /* FIXME: Ignore these for now. The circumstances under which
4017 they should be written out are not clear to me. */
4018 return true;
4019 }
4020
4021 bfd_h_put_8 (output_bfd, type, outsym.e_type);
4022 bfd_h_put_8 (output_bfd, 0, outsym.e_other);
4023 bfd_h_put_16 (output_bfd, 0, outsym.e_desc);
1afd2380 4024 indx = add_to_stringtab (output_bfd, finfo->strtab, h->root.root.string,
d17fc4c9
ILT		 4025 false);
4026 if (indx == (bfd_size_type) -1)
4027 {
4028 /* FIXME: No way to handle errors. */
4029 abort ();
4030 }
4031 PUT_WORD (output_bfd, indx, outsym.e_strx);
4c3721d5
ILT		 4032 PUT_WORD (output_bfd, val, outsym.e_value);
4033
4034 if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0
4035 || bfd_write ((PTR) &outsym, (bfd_size_type) EXTERNAL_NLIST_SIZE,
4036 (bfd_size_type) 1, output_bfd) != EXTERNAL_NLIST_SIZE)
4037 {
4038 /* FIXME: No way to handle errors. */
4039 abort ();
4040 }
4041
4042 finfo->symoff += EXTERNAL_NLIST_SIZE;
4043 h->indx = obj_aout_external_sym_count (output_bfd);
4044 ++obj_aout_external_sym_count (output_bfd);
4045
4046 return true;
4047}
4048
4049/* Link an a.out section into the output file. */
4050
4051static boolean
4052aout_link_input_section (finfo, input_bfd, input_section, reloff_ptr,
1afd2380 4053 rel_size)
4c3721d5
ILT		 4054 struct aout_final_link_info *finfo;
4055 bfd *input_bfd;
4056 asection *input_section;
4057 file_ptr *reloff_ptr;
4058 bfd_size_type rel_size;
4c3721d5
ILT		 4059{
4060 bfd_size_type input_size;
e85e8bfe 4061 PTR relocs;
4c3721d5
ILT		 4062
4063 /* Get the section contents. */
4064 input_size = bfd_section_size (input_bfd, input_section);
1afd2380
ILT		 4065 if (! bfd_get_section_contents (input_bfd, input_section,
4066 (PTR) finfo->contents,
4c3721d5 4067 (file_ptr) 0, input_size))
1afd2380 4068 return false;
4c3721d5 4069
e85e8bfe
ILT		 4070 /* Read in the relocs if we haven't already done it. */
4071 if (aout_section_data (input_section) != NULL
4072 && aout_section_data (input_section)->relocs != NULL)
4073 relocs = aout_section_data (input_section)->relocs;
4074 else
80425e6c 4075 {
1afd2380 4076 relocs = finfo->relocs;
e85e8bfe
ILT		 4077 if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0
4078 || bfd_read (relocs, 1, rel_size, input_bfd) != rel_size)
1afd2380 4079 return false;
80425e6c 4080 }
4c3721d5
ILT		 4081
4082 /* Relocate the section contents. */
4083 if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE)
4084 {
4085 if (! aout_link_input_section_std (finfo, input_bfd, input_section,
4086 (struct reloc_std_external *) relocs,
1afd2380
ILT		 4087 rel_size, finfo->contents))
4088 return false;
4c3721d5
ILT		 4089 }
4090 else
4091 {
4092 if (! aout_link_input_section_ext (finfo, input_bfd, input_section,
4093 (struct reloc_ext_external *) relocs,
1afd2380
ILT		 4094 rel_size, finfo->contents))
4095 return false;
4c3721d5
ILT		 4096 }
4097
4098 /* Write out the section contents. */
4099 if (! bfd_set_section_contents (finfo->output_bfd,
4100 input_section->output_section,
1afd2380 4101 (PTR) finfo->contents,
728472f1 4102 input_section->output_offset,
4c3721d5 4103 input_size))
1afd2380 4104 return false;
4c3721d5
ILT		 4105
4106 /* If we are producing relocateable output, the relocs were
4107 modified, and we now write them out. */
4108 if (finfo->info->relocateable)
4109 {
4110 if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0)
1afd2380 4111 return false;
4c3721d5
ILT		 4112 if (bfd_write (relocs, (bfd_size_type) 1, rel_size, finfo->output_bfd)
4113 != rel_size)
1afd2380 4114 return false;
4c3721d5
ILT		 4115 *reloff_ptr += rel_size;
4116
4117 /* Assert that the relocs have not run into the symbols, and
4118 that if these are the text relocs they have not run into the
4119 data relocs. */
4120 BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd)
4121 && (reloff_ptr != &finfo->treloff
4122 || (*reloff_ptr
4123 <= obj_datasec (finfo->output_bfd)->rel_filepos)));
4124 }
4125
4126 return true;
4127}
4128
4129/* Get the section corresponding to a reloc index. */
4130
4131static INLINE asection *
4132aout_reloc_index_to_section (abfd, indx)
4133 bfd *abfd;
4134 int indx;
4135{
4136 switch (indx & N_TYPE)
4137 {
4138 case N_TEXT:
4139 return obj_textsec (abfd);
4140 case N_DATA:
4141 return obj_datasec (abfd);
4142 case N_BSS:
4143 return obj_bsssec (abfd);
4144 case N_ABS:
fa2302b8 4145 case N_UNDF:
4587b578 4146 return bfd_abs_section_ptr;
4c3721d5
ILT		 4147 default:
4148 abort ();
4149 }
4150}
4151
4152/* Relocate an a.out section using standard a.out relocs. */
4153
4154static boolean
4155aout_link_input_section_std (finfo, input_bfd, input_section, relocs,
1afd2380 4156 rel_size, contents)
4c3721d5
ILT		 4157 struct aout_final_link_info *finfo;
4158 bfd *input_bfd;
4159 asection *input_section;
4160 struct reloc_std_external *relocs;
4161 bfd_size_type rel_size;
4162 bfd_byte *contents;
4c3721d5 4163{
e85e8bfe
ILT		 4164 boolean (*check_dynamic_reloc) PARAMS ((struct bfd_link_info *,
4165 bfd *, asection *,
4166 struct aout_link_hash_entry *,
4167 PTR, boolean *));
4c3721d5
ILT		 4168 bfd *output_bfd;
4169 boolean relocateable;
4170 struct external_nlist *syms;
4171 char *strings;
4172 struct aout_link_hash_entry **sym_hashes;
1afd2380 4173 int *symbol_map;
4c3721d5
ILT		 4174 bfd_size_type reloc_count;
4175 register struct reloc_std_external *rel;
4176 struct reloc_std_external *rel_end;
4177
4178 output_bfd = finfo->output_bfd;
e85e8bfe 4179 check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc;
4c3721d5
ILT		 4180
4181 BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE);
4182 BFD_ASSERT (input_bfd->xvec->header_byteorder_big_p
4183 == output_bfd->xvec->header_byteorder_big_p);
4184
4185 relocateable = finfo->info->relocateable;
4186 syms = obj_aout_external_syms (input_bfd);
4187 strings = obj_aout_external_strings (input_bfd);
4188 sym_hashes = obj_aout_sym_hashes (input_bfd);
1afd2380 4189 symbol_map = finfo->symbol_map;
4c3721d5
ILT		 4190
4191 reloc_count = rel_size / RELOC_STD_SIZE;
4192 rel = relocs;
4193 rel_end = rel + reloc_count;
4194 for (; rel < rel_end; rel++)
4195 {
4196 bfd_vma r_addr;
4197 int r_index;
4198 int r_extern;
4199 int r_pcrel;
4200 int r_baserel;
4201 int r_jmptable;
4202 int r_relative;
4203 int r_length;
4204 int howto_idx;
f42fe159 4205 reloc_howto_type *howto;
4c3721d5
ILT		 4206 bfd_vma relocation;
4207 bfd_reloc_status_type r;
4208
4209 r_addr = GET_SWORD (input_bfd, rel->r_address);
4210
f42fe159
ILT		 4211#ifdef MY_reloc_howto
4212 howto = MY_reloc_howto(input_bfd, rel, r_index, r_extern, r_pcrel);
4213#else
4c3721d5
ILT		 4214 if (input_bfd->xvec->header_byteorder_big_p)
4215 {
4216 r_index = ((rel->r_index[0] << 16)
4217 | (rel->r_index[1] << 8)
4218 | rel->r_index[2]);
4219 r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
4220 r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
4221 r_baserel = (0 != (rel->r_type[0] & RELOC_STD_BITS_BASEREL_BIG));
4222 r_jmptable= (0 != (rel->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG));
4223 r_relative= (0 != (rel->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG));
4224 r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_BIG)
4225 >> RELOC_STD_BITS_LENGTH_SH_BIG);
4226 }
4227 else
4228 {
4229 r_index = ((rel->r_index[2] << 16)
4230 | (rel->r_index[1] << 8)
4231 | rel->r_index[0]);
4232 r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
4233 r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
4234 r_baserel = (0 != (rel->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE));
4235 r_jmptable= (0 != (rel->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE));
4236 r_relative= (0 != (rel->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE));
4237 r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE)
4238 >> RELOC_STD_BITS_LENGTH_SH_LITTLE);
4239 }
4240
cb9461ff
JK		 4241 howto_idx = r_length + 4 * r_pcrel + 8 * r_baserel
4242 + 16 * r_jmptable + 32 * r_relative;
4c3721d5 4243 BFD_ASSERT (howto_idx < TABLE_SIZE (howto_table_std));
f42fe159
ILT		 4244 howto = howto_table_std + howto_idx;
4245#endif
4c3721d5
ILT		 4246
4247 if (relocateable)
4248 {
4249 /* We are generating a relocateable output file, and must
4250 modify the reloc accordingly. */
4251 if (r_extern)
4252 {
4253 struct aout_link_hash_entry *h;
4254
4255 /* If we know the symbol this relocation is against,
4256 convert it into a relocation against a section. This
4257 is what the native linker does. */
4258 h = sym_hashes[r_index];
4259 if (h != (struct aout_link_hash_entry *) NULL
4260 && h->root.type == bfd_link_hash_defined)
4261 {
4262 asection *output_section;
4263
4264 /* Change the r_extern value. */
4265 if (output_bfd->xvec->header_byteorder_big_p)
4266 rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_BIG;
4267 else
4268 rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_LITTLE;
4269
4270 /* Compute a new r_index. */
4271 output_section = h->root.u.def.section->output_section;
4272 if (output_section == obj_textsec (output_bfd))
4273 r_index = N_TEXT;
4274 else if (output_section == obj_datasec (output_bfd))
4275 r_index = N_DATA;
4276 else if (output_section == obj_bsssec (output_bfd))
4277 r_index = N_BSS;
4278 else
4279 r_index = N_ABS;
4280
4281 /* Add the symbol value and the section VMA to the
4282 addend stored in the contents. */
4283 relocation = (h->root.u.def.value
4284 + output_section->vma
4285 + h->root.u.def.section->output_offset);
4286 }
4287 else
4288 {
4289 /* We must change r_index according to the symbol
4290 map. */
4291 r_index = symbol_map[r_index];
4292
4293 if (r_index == -1)
4294 {
4295 const char *name;
4296
4297 name = strings + GET_WORD (input_bfd,
4298 syms[r_index].e_strx);
4299 if (! ((*finfo->info->callbacks->unattached_reloc)
4300 (finfo->info, name, input_bfd, input_section,
4301 r_addr)))
4302 return false;
4303 r_index = 0;
4304 }
4305
4306 relocation = 0;
4307 }
4308
4309 /* Write out the new r_index value. */
4310 if (output_bfd->xvec->header_byteorder_big_p)
4311 {
4312 rel->r_index[0] = r_index >> 16;
4313 rel->r_index[1] = r_index >> 8;
4314 rel->r_index[2] = r_index;
4315 }
4316 else
4317 {
4318 rel->r_index[2] = r_index >> 16;
4319 rel->r_index[1] = r_index >> 8;
4320 rel->r_index[0] = r_index;
4321 }
4322 }
4323 else
4324 {
4325 asection *section;
4326
4327 /* This is a relocation against a section. We must
4328 adjust by the amount that the section moved. */
4329 section = aout_reloc_index_to_section (input_bfd, r_index);
4330 relocation = (section->output_section->vma
4331 + section->output_offset
4332 - section->vma);
4333 }
4334
4335 /* Change the address of the relocation. */
4336 PUT_WORD (output_bfd,
4337 r_addr + input_section->output_offset,
4338 rel->r_address);
4339
4340 /* Adjust a PC relative relocation by removing the reference
e68de5d5
ILT		 4341 to the original address in the section and including the
4342 reference to the new address. */
4c3721d5 4343 if (r_pcrel)
e68de5d5
ILT		 4344 relocation -= (input_section->output_section->vma
4345 + input_section->output_offset
4346 - input_section->vma);
4c3721d5
ILT		 4347
4348 if (relocation == 0)
4349 r = bfd_reloc_ok;
4350 else
f42fe159 4351 r = _bfd_relocate_contents (howto,
4c3721d5
ILT		 4352 input_bfd, relocation,
4353 contents + r_addr);
4354 }
4355 else
4356 {
4357 /* We are generating an executable, and must do a full
4358 relocation. */
4359 if (r_extern)
4360 {
4361 struct aout_link_hash_entry *h;
4362
4363 h = sym_hashes[r_index];
e85e8bfe
ILT		 4364
4365 if (check_dynamic_reloc != NULL)
4366 {
4367 boolean skip;
4368
4369 if (! ((*check_dynamic_reloc)
4370 (finfo->info, input_bfd, input_section, h,
4371 (PTR) rel, &skip)))
4372 return false;
4373 if (skip)
4374 continue;
4375 }
4376
4c3721d5
ILT		 4377 if (h != (struct aout_link_hash_entry *) NULL
4378 && h->root.type == bfd_link_hash_defined)
4379 {
4380 relocation = (h->root.u.def.value
4381 + h->root.u.def.section->output_section->vma
4382 + h->root.u.def.section->output_offset);
4383 }
4298e311
ILT		 4384 else if (h != (struct aout_link_hash_entry *) NULL
4385 && h->root.type == bfd_link_hash_weak)
4386 relocation = 0;
4c3721d5
ILT		 4387 else
4388 {
4389 const char *name;
4390
4391 name = strings + GET_WORD (input_bfd, syms[r_index].e_strx);
4392 if (! ((*finfo->info->callbacks->undefined_symbol)
4393 (finfo->info, name, input_bfd, input_section,
4394 r_addr)))
4395 return false;
4396 relocation = 0;
4397 }
4398 }
4399 else
4400 {
4401 asection *section;
4402
4403 section = aout_reloc_index_to_section (input_bfd, r_index);
4404 relocation = (section->output_section->vma
4405 + section->output_offset
4406 - section->vma);
e68de5d5
ILT		 4407 if (r_pcrel)
4408 relocation += input_section->vma;
4c3721d5
ILT		 4409 }
4410
f42fe159 4411 r = _bfd_final_link_relocate (howto,
4c3721d5
ILT		 4412 input_bfd, input_section,
4413 contents, r_addr, relocation,
4414 (bfd_vma) 0);
4415 }
4416
4417 if (r != bfd_reloc_ok)
4418 {
4419 switch (r)
4420 {
4421 default:
4422 case bfd_reloc_outofrange:
4423 abort ();
4424 case bfd_reloc_overflow:
4991ebb9
ILT		 4425 {
4426 const char *name;
4427
4428 if (r_extern)
4429 name = strings + GET_WORD (input_bfd,
4430 syms[r_index].e_strx);
4431 else
4432 {
4433 asection *s;
4434
4435 s = aout_reloc_index_to_section (input_bfd, r_index);
4436 name = bfd_section_name (input_bfd, s);
4437 }
4438 if (! ((*finfo->info->callbacks->reloc_overflow)
f42fe159 4439 (finfo->info, name, howto->name,
4991ebb9
ILT		 4440 (bfd_vma) 0, input_bfd, input_section, r_addr)))
4441 return false;
4442 }
4c3721d5
ILT		 4443 break;
4444 }
4445 }
4446 }
4447
4448 return true;
4449}
4450
4451/* Relocate an a.out section using extended a.out relocs. */
4452
4453static boolean
4454aout_link_input_section_ext (finfo, input_bfd, input_section, relocs,
1afd2380 4455 rel_size, contents)
4c3721d5
ILT		 4456 struct aout_final_link_info *finfo;
4457 bfd *input_bfd;
4458 asection *input_section;
4459 struct reloc_ext_external *relocs;
4460 bfd_size_type rel_size;
4461 bfd_byte *contents;
4c3721d5 4462{
e85e8bfe
ILT		 4463 boolean (*check_dynamic_reloc) PARAMS ((struct bfd_link_info *,
4464 bfd *, asection *,
4465 struct aout_link_hash_entry *,
4466 PTR, boolean *));
4c3721d5
ILT		 4467 bfd *output_bfd;
4468 boolean relocateable;
4469 struct external_nlist *syms;
4470 char *strings;
4471 struct aout_link_hash_entry **sym_hashes;
1afd2380 4472 int *symbol_map;
4c3721d5
ILT		 4473 bfd_size_type reloc_count;
4474 register struct reloc_ext_external *rel;
4475 struct reloc_ext_external *rel_end;
4476
4477 output_bfd = finfo->output_bfd;
e85e8bfe 4478 check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc;
4c3721d5
ILT		 4479
4480 BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_EXT_SIZE);
4481 BFD_ASSERT (input_bfd->xvec->header_byteorder_big_p
4482 == output_bfd->xvec->header_byteorder_big_p);
4483
4484 relocateable = finfo->info->relocateable;
4485 syms = obj_aout_external_syms (input_bfd);
4486 strings = obj_aout_external_strings (input_bfd);
4487 sym_hashes = obj_aout_sym_hashes (input_bfd);
1afd2380 4488 symbol_map = finfo->symbol_map;
4c3721d5
ILT		 4489
4490 reloc_count = rel_size / RELOC_EXT_SIZE;
4491 rel = relocs;
4492 rel_end = rel + reloc_count;
4493 for (; rel < rel_end; rel++)
4494 {
4495 bfd_vma r_addr;
4496 int r_index;
4497 int r_extern;
4498 int r_type;
4499 bfd_vma r_addend;
4500 bfd_vma relocation;
4501
4502 r_addr = GET_SWORD (input_bfd, rel->r_address);
4503
4504 if (input_bfd->xvec->header_byteorder_big_p)
4505 {
4506 r_index = ((rel->r_index[0] << 16)
4507 | (rel->r_index[1] << 8)
4508 | rel->r_index[2]);
4509 r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG));
4510 r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
4511 >> RELOC_EXT_BITS_TYPE_SH_BIG);
4512 }
4513 else
4514 {
4515 r_index = ((rel->r_index[2] << 16)
4516 | (rel->r_index[1] << 8)
4517 | rel->r_index[0]);
4518 r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE));
4519 r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
4520 >> RELOC_EXT_BITS_TYPE_SH_LITTLE);
4521 }
4522
4523 r_addend = GET_SWORD (input_bfd, rel->r_addend);
4524
e68de5d5
ILT		 4525 BFD_ASSERT (r_type >= 0
4526 && r_type < TABLE_SIZE (howto_table_ext));
4527
4c3721d5
ILT		 4528 if (relocateable)
4529 {
4530 /* We are generating a relocateable output file, and must
4531 modify the reloc accordingly. */
4532 if (r_extern)
4533 {
4534 struct aout_link_hash_entry *h;
4535
4536 /* If we know the symbol this relocation is against,
4537 convert it into a relocation against a section. This
4538 is what the native linker does. */
4539 h = sym_hashes[r_index];
4540 if (h != (struct aout_link_hash_entry *) NULL
4541 && h->root.type == bfd_link_hash_defined)
4542 {
4543 asection *output_section;
4544
4545 /* Change the r_extern value. */
4546 if (output_bfd->xvec->header_byteorder_big_p)
4547 rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_BIG;
4548 else
4549 rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_LITTLE;
4550
4551 /* Compute a new r_index. */
4552 output_section = h->root.u.def.section->output_section;
4553 if (output_section == obj_textsec (output_bfd))
4554 r_index = N_TEXT;
4555 else if (output_section == obj_datasec (output_bfd))
4556 r_index = N_DATA;
4557 else if (output_section == obj_bsssec (output_bfd))
4558 r_index = N_BSS;
4559 else
4560 r_index = N_ABS;
4561
4562 /* Add the symbol value and the section VMA to the
4563 addend. */
4564 relocation = (h->root.u.def.value
4565 + output_section->vma
4566 + h->root.u.def.section->output_offset);
e68de5d5
ILT		 4567
4568 /* Now RELOCATION is the VMA of the final
4569 destination. If this is a PC relative reloc,
4570 then ADDEND is the negative of the source VMA.
4571 We want to set ADDEND to the difference between
4572 the destination VMA and the source VMA, which
4573 means we must adjust RELOCATION by the change in
4574 the source VMA. This is done below. */
4c3721d5
ILT		 4575 }
4576 else
4577 {
4578 /* We must change r_index according to the symbol
4579 map. */
4580 r_index = symbol_map[r_index];
4581
4582 if (r_index == -1)
4583 {
4584 const char *name;
4585
4586 name = (strings
4587 + GET_WORD (input_bfd, syms[r_index].e_strx));
4588 if (! ((*finfo->info->callbacks->unattached_reloc)
4589 (finfo->info, name, input_bfd, input_section,
4590 r_addr)))
4591 return false;
4592 r_index = 0;
4593 }
4594
4595 relocation = 0;
e68de5d5
ILT		 4596
4597 /* If this is a PC relative reloc, then the addend
4598 is the negative of the source VMA. We must
4599 adjust it by the change in the source VMA. This
4600 is done below. */
4c3721d5
ILT		 4601 }
4602
4603 /* Write out the new r_index value. */
4604 if (output_bfd->xvec->header_byteorder_big_p)
4605 {
4606 rel->r_index[0] = r_index >> 16;
4607 rel->r_index[1] = r_index >> 8;
4608 rel->r_index[2] = r_index;
4609 }
4610 else
4611 {
4612 rel->r_index[2] = r_index >> 16;
4613 rel->r_index[1] = r_index >> 8;
4614 rel->r_index[0] = r_index;
4615 }
4616 }
4617 else
4618 {
4619 asection *section;
4620
4621 /* This is a relocation against a section. We must
4622 adjust by the amount that the section moved. */
4623 section = aout_reloc_index_to_section (input_bfd, r_index);
4624 relocation = (section->output_section->vma
4625 + section->output_offset
4626 - section->vma);
4c3721d5 4627
e68de5d5
ILT		 4628 /* If this is a PC relative reloc, then the addend is
4629 the difference in VMA between the destination and the
4630 source. We have just adjusted for the change in VMA
4631 of the destination, so we must also adjust by the
4632 change in VMA of the source. This is done below. */
4c3721d5
ILT		 4633 }
4634
e68de5d5
ILT		 4635 /* As described above, we must always adjust a PC relative
4636 reloc by the change in VMA of the source. */
4637 if (howto_table_ext[r_type].pc_relative)
4638 relocation -= (input_section->output_section->vma
4639 + input_section->output_offset
4640 - input_section->vma);
4641
4c3721d5
ILT		 4642 /* Change the addend if necessary. */
4643 if (relocation != 0)
4644 PUT_WORD (output_bfd, r_addend + relocation, rel->r_addend);
4645
4646 /* Change the address of the relocation. */
4647 PUT_WORD (output_bfd,
4648 r_addr + input_section->output_offset,
4649 rel->r_address);
4650 }
4651 else
4652 {
4653 bfd_reloc_status_type r;
4654
4655 /* We are generating an executable, and must do a full
4656 relocation. */
4657 if (r_extern)
4658 {
4659 struct aout_link_hash_entry *h;
4660
4661 h = sym_hashes[r_index];
e85e8bfe
ILT		 4662
4663 if (check_dynamic_reloc != NULL)
4664 {
4665 boolean skip;
4666
4667 if (! ((*check_dynamic_reloc)
4668 (finfo->info, input_bfd, input_section, h,
4669 (PTR) rel, &skip)))
4670 return false;
4671 if (skip)
4672 continue;
4673 }
4674
4c3721d5
ILT		 4675 if (h != (struct aout_link_hash_entry *) NULL
4676 && h->root.type == bfd_link_hash_defined)
4677 {
4678 relocation = (h->root.u.def.value
4679 + h->root.u.def.section->output_section->vma
4680 + h->root.u.def.section->output_offset);
4681 }
4298e311
ILT		 4682 else if (h != (struct aout_link_hash_entry *) NULL
4683 && h->root.type == bfd_link_hash_weak)
4684 relocation = 0;
4c3721d5
ILT		 4685 else
4686 {
4687 const char *name;
4688
4689 name = strings + GET_WORD (input_bfd, syms[r_index].e_strx);
4690 if (! ((*finfo->info->callbacks->undefined_symbol)
4691 (finfo->info, name, input_bfd, input_section,
4692 r_addr)))
4693 return false;
4694 relocation = 0;
4695 }
4696 }
4697 else
4698 {
4699 asection *section;
4700
4701 section = aout_reloc_index_to_section (input_bfd, r_index);
e68de5d5
ILT		 4702
4703 /* If this is a PC relative reloc, then R_ADDEND is the
4704 difference between the two vmas, or
4705 old_dest_sec + old_dest_off - (old_src_sec + old_src_off)
4706 where
4707 old_dest_sec == section->vma
4708 and
4709 old_src_sec == input_section->vma
4710 and
4711 old_src_off == r_addr
4712
4713 _bfd_final_link_relocate expects RELOCATION +
4714 R_ADDEND to be the VMA of the destination minus
4715 r_addr (the minus r_addr is because this relocation
4716 is not pcrel_offset, which is a bit confusing and
4717 should, perhaps, be changed), or
4718 new_dest_sec
4719 where
4720 new_dest_sec == output_section->vma + output_offset
4721 We arrange for this to happen by setting RELOCATION to
4722 new_dest_sec + old_src_sec - old_dest_sec
4723
4724 If this is not a PC relative reloc, then R_ADDEND is
4725 simply the VMA of the destination, so we set
4726 RELOCATION to the change in the destination VMA, or
4727 new_dest_sec - old_dest_sec
4728 */
4c3721d5
ILT		 4729 relocation = (section->output_section->vma
4730 + section->output_offset
4731 - section->vma);
e68de5d5
ILT		 4732 if (howto_table_ext[r_type].pc_relative)
4733 relocation += input_section->vma;
4c3721d5
ILT		 4734 }
4735
4c3721d5
ILT		 4736 r = _bfd_final_link_relocate (howto_table_ext + r_type,
4737 input_bfd, input_section,
4738 contents, r_addr, relocation,
4739 r_addend);
4740 if (r != bfd_reloc_ok)
4741 {
4742 switch (r)
4743 {
4744 default:
4745 case bfd_reloc_outofrange:
4746 abort ();
4747 case bfd_reloc_overflow:
4991ebb9
ILT		 4748 {
4749 const char *name;
4750
4751 if (r_extern)
4752 name = strings + GET_WORD (input_bfd,
4753 syms[r_index].e_strx);
4754 else
4755 {
4756 asection *s;
4757
4758 s = aout_reloc_index_to_section (input_bfd, r_index);
4759 name = bfd_section_name (input_bfd, s);
4760 }
4761 if (! ((*finfo->info->callbacks->reloc_overflow)
4762 (finfo->info, name, howto_table_ext[r_type].name,
4763 r_addend, input_bfd, input_section, r_addr)))
4764 return false;
4765 }
4c3721d5
ILT		 4766 break;
4767 }
4768 }
4769 }
4770 }
4771
4772 return true;
4773}
ec099b4b
ILT		 4774
4775/* Handle a link order which is supposed to generate a reloc. */
4776
4777static boolean
4778aout_link_reloc_link_order (finfo, o, p)
4779 struct aout_final_link_info *finfo;
4780 asection *o;
4781 struct bfd_link_order *p;
4782{
4783 struct bfd_link_order_reloc *pr;
4784 int r_index;
4785 int r_extern;
4786 const reloc_howto_type *howto;
4787 file_ptr *reloff_ptr;
4788 struct reloc_std_external srel;
4789 struct reloc_ext_external erel;
4790 PTR rel_ptr;
4791
4792 pr = p->u.reloc.p;
4793
4794 if (p->type == bfd_section_reloc_link_order)
4795 {
4796 r_extern = 0;
4587b578 4797 if (bfd_is_abs_section (pr->u.section))
ec099b4b
ILT		 4798 r_index = N_ABS | N_EXT;
4799 else
4800 {
4801 BFD_ASSERT (pr->u.section->owner == finfo->output_bfd);
4802 r_index = pr->u.section->target_index;
4803 }
4804 }
4805 else
4806 {
4807 struct aout_link_hash_entry *h;
4808
4809 BFD_ASSERT (p->type == bfd_symbol_reloc_link_order);
4810 r_extern = 1;
4811 h = aout_link_hash_lookup (aout_hash_table (finfo->info),
4812 pr->u.name, false, false, true);
4813 if (h != (struct aout_link_hash_entry *) NULL
4814 && h->indx == -1)
4815 r_index = h->indx;
4816 else
4817 {
4818 if (! ((*finfo->info->callbacks->unattached_reloc)
4819 (finfo->info, pr->u.name, (bfd *) NULL,
4820 (asection *) NULL, (bfd_vma) 0)))
4821 return false;
4822 r_index = 0;
4823 }
4824 }
4825
4826 howto = bfd_reloc_type_lookup (finfo->output_bfd, pr->reloc);
4827 if (howto == (const reloc_howto_type *) NULL)
4828 {
4829 bfd_set_error (bfd_error_bad_value);
4830 return false;
4831 }
4832
4833 if (o == obj_textsec (finfo->output_bfd))
4834 reloff_ptr = &finfo->treloff;
4835 else if (o == obj_datasec (finfo->output_bfd))
4836 reloff_ptr = &finfo->dreloff;
4837 else
4838 abort ();
4839
4840 if (obj_reloc_entry_size (finfo->output_bfd) == RELOC_STD_SIZE)
4841 {
4842 int r_pcrel;
4843 int r_baserel;
4844 int r_jmptable;
4845 int r_relative;
4846 int r_length;
4847
f42fe159
ILT		 4848#ifdef MY_put_reloc
4849 MY_put_reloc(finfo->output_bfd, r_extern, r_index, p->offset, howto, &srel);
4850#else
ec099b4b
ILT		 4851 r_pcrel = howto->pc_relative;
4852 r_baserel = (howto->type & 8) != 0;
cb9461ff
JK		 4853 r_jmptable = (howto->type & 16) != 0;
4854 r_relative = (howto->type & 32) != 0;
ec099b4b
ILT		 4855 r_length = howto->size;
4856
4857 PUT_WORD (finfo->output_bfd, p->offset, srel.r_address);
4858 if (finfo->output_bfd->xvec->header_byteorder_big_p)
4859 {
4860 srel.r_index[0] = r_index >> 16;
4861 srel.r_index[1] = r_index >> 8;
4862 srel.r_index[2] = r_index;
4863 srel.r_type[0] =
4864 ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0)
4865 | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0)
4866 | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0)
4867 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0)
4868 | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0)
4869 | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG));
4870 }
4871 else
4872 {
4873 srel.r_index[2] = r_index >> 16;
4874 srel.r_index[1] = r_index >> 8;
4875 srel.r_index[0] = r_index;
4876 srel.r_type[0] =
4877 ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0)
4878 | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0)
4879 | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0)
4880 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0)
4881 | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0)
4882 | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE));
4883 }
f42fe159 4884#endif
ec099b4b
ILT		 4885 rel_ptr = (PTR) &srel;
4886
4887 /* We have to write the addend into the object file, since
4888 standard a.out relocs are in place. It would be more
4889 reliable if we had the current contents of the file here,
4890 rather than assuming zeroes, but we can't read the file since
4891 it was opened using bfd_openw. */
4892 if (pr->addend != 0)
4893 {
4894 bfd_size_type size;
4895 bfd_reloc_status_type r;
4896 bfd_byte *buf;
4897 boolean ok;
4898
4899 size = bfd_get_reloc_size (howto);
e85e8bfe 4900 buf = (bfd_byte *) bfd_zmalloc (size);
ec099b4b
ILT		 4901 if (buf == (bfd_byte *) NULL)
4902 {
4903 bfd_set_error (bfd_error_no_memory);
4904 return false;
4905 }
4906 r = _bfd_relocate_contents (howto, finfo->output_bfd,
4907 pr->addend, buf);
4908 switch (r)
4909 {
4910 case bfd_reloc_ok:
4911 break;
4912 default:
4913 case bfd_reloc_outofrange:
4914 abort ();
4915 case bfd_reloc_overflow:
4916 if (! ((*finfo->info->callbacks->reloc_overflow)
4917 (finfo->info,
4918 (p->type == bfd_section_reloc_link_order
4919 ? bfd_section_name (finfo->output_bfd,
4920 pr->u.section)
4921 : pr->u.name),
4922 howto->name, pr->addend, (bfd *) NULL,
4923 (asection *) NULL, (bfd_vma) 0)))
4924 {
4925 free (buf);
4926 return false;
4927 }
4928 break;
4929 }
4930 ok = bfd_set_section_contents (finfo->output_bfd, o,
4931 (PTR) buf,
4932 (file_ptr) p->offset,
4933 size);
4934 free (buf);
4935 if (! ok)
4936 return false;
4937 }
4938 }
4939 else
4940 {
4941 PUT_WORD (finfo->output_bfd, p->offset, erel.r_address);
4942
4943 if (finfo->output_bfd->xvec->header_byteorder_big_p)
4944 {
4945 erel.r_index[0] = r_index >> 16;
4946 erel.r_index[1] = r_index >> 8;
4947 erel.r_index[2] = r_index;
4948 erel.r_type[0] =
4949 ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0)
4950 | (howto->type << RELOC_EXT_BITS_TYPE_SH_BIG));
4951 }
4952 else
4953 {
4954 erel.r_index[2] = r_index >> 16;
4955 erel.r_index[1] = r_index >> 8;
4956 erel.r_index[0] = r_index;
4957 erel.r_type[0] =
4958 (r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0)
4959 | (howto->type << RELOC_EXT_BITS_TYPE_SH_LITTLE);
4960 }
4961
4962 PUT_WORD (finfo->output_bfd, pr->addend, erel.r_addend);
4963
4964 rel_ptr = (PTR) &erel;
4965 }
4966
4967 if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0
4968 || (bfd_write (rel_ptr, (bfd_size_type) 1,
4969 obj_reloc_entry_size (finfo->output_bfd),
4970 finfo->output_bfd)
4971 != obj_reloc_entry_size (finfo->output_bfd)))
4972 return false;
4973
4974 *reloff_ptr += obj_reloc_entry_size (finfo->output_bfd);
4975
4976 /* Assert that the relocs have not run into the symbols, and that n
4977 the text relocs have not run into the data relocs. */
4978 BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd)
4979 && (reloff_ptr != &finfo->treloff
4980 || (*reloff_ptr
4981 <= obj_datasec (finfo->output_bfd)->rel_filepos)));
4982
4983 return true;
4984}
GDB Binutils - Deliverables
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