1/* BFD semi-generic back-end for a.out binaries. 2 Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 2000, 3 2001, 2002, 2003, 2004 4 Free Software Foundation, Inc. 5 Written by Cygnus Support. 6 7 This file is part of BFD, the Binary File Descriptor library. 8 9 This program is free software; you can redistribute it and/or modify 10 it under the terms of the GNU General Public License as published by 11 the Free Software Foundation; either version 2 of the License, or 12 (at your option) any later version. 13 14 This program is distributed in the hope that it will be useful, 15 but WITHOUT ANY WARRANTY; without even the implied warranty of 16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 GNU General Public License for more details. 18 19 You should have received a copy of the GNU General Public License 20 along with this program; if not, write to the Free Software 21 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 22 23/* 24SECTION 25 a.out backends 26 27DESCRIPTION 28 29 BFD supports a number of different flavours of a.out format, 30 though the major differences are only the sizes of the 31 structures on disk, and the shape of the relocation 32 information. 33 34 The support is split into a basic support file @file{aoutx.h} 35 and other files which derive functions from the base. One 36 derivation file is @file{aoutf1.h} (for a.out flavour 1), and 37 adds to the basic a.out functions support for sun3, sun4, 386 38 and 29k a.out files, to create a target jump vector for a 39 specific target. 40 41 This information is further split out into more specific files 42 for each machine, including @file{sunos.c} for sun3 and sun4, 43 @file{newsos3.c} for the Sony NEWS, and @file{demo64.c} for a 44 demonstration of a 64 bit a.out format. 45 46 The base file @file{aoutx.h} defines general mechanisms for 47 reading and writing records to and from disk and various 48 other methods which BFD requires. It is included by 49 @file{aout32.c} and @file{aout64.c} to form the names 50 <<aout_32_swap_exec_header_in>>, <<aout_64_swap_exec_header_in>>, etc. 51 52 As an example, this is what goes on to make the back end for a 53 sun4, from @file{aout32.c}: 54 55| #define ARCH_SIZE 32 56| #include "aoutx.h" 57 58 Which exports names: 59 60| ... 61| aout_32_canonicalize_reloc 62| aout_32_find_nearest_line 63| aout_32_get_lineno 64| aout_32_get_reloc_upper_bound 65| ... 66 67 from @file{sunos.c}: 68 69| #define TARGET_NAME "a.out-sunos-big" 70| #define VECNAME sunos_big_vec 71| #include "aoutf1.h" 72 73 requires all the names from @file{aout32.c}, and produces the jump vector 74 75| sunos_big_vec 76 77 The file @file{host-aout.c} is a special case. It is for a large set 78 of hosts that use ``more or less standard'' a.out files, and 79 for which cross-debugging is not interesting. It uses the 80 standard 32-bit a.out support routines, but determines the 81 file offsets and addresses of the text, data, and BSS 82 sections, the machine architecture and machine type, and the 83 entry point address, in a host-dependent manner. Once these 84 values have been determined, generic code is used to handle 85 the object file. 86 87 When porting it to run on a new system, you must supply: 88 89| HOST_PAGE_SIZE 90| HOST_SEGMENT_SIZE 91| HOST_MACHINE_ARCH (optional) 92| HOST_MACHINE_MACHINE (optional) 93| HOST_TEXT_START_ADDR 94| HOST_STACK_END_ADDR 95 96 in the file @file{../include/sys/h-@var{XXX}.h} (for your host). These 97 values, plus the structures and macros defined in @file{a.out.h} on 98 your host system, will produce a BFD target that will access 99 ordinary a.out files on your host. To configure a new machine 100 to use @file{host-aout.c}, specify: 101 102| TDEFAULTS = -DDEFAULT_VECTOR=host_aout_big_vec 103| TDEPFILES= host-aout.o trad-core.o 104 105 in the @file{config/@var{XXX}.mt} file, and modify @file{configure.in} 106 to use the 107 @file{@var{XXX}.mt} file (by setting "<<bfd_target=XXX>>") when your 108 configuration is selected. */ 109 110/* Some assumptions: 111 * Any BFD with D_PAGED set is ZMAGIC, and vice versa. 112 Doesn't matter what the setting of WP_TEXT is on output, but it'll 113 get set on input. 114 * Any BFD with D_PAGED clear and WP_TEXT set is NMAGIC. 115 * Any BFD with both flags clear is OMAGIC. 116 (Just want to make these explicit, so the conditions tested in this 117 file make sense if you're more familiar with a.out than with BFD.) */ 118 119#define KEEPIT udata.i 120 121#include "bfd.h" 122#include "sysdep.h" 123#include "safe-ctype.h" 124#include "bfdlink.h" 125 126#include "libaout.h" 127#include "libbfd.h" 128#include "aout/aout64.h" 129#include "aout/stab_gnu.h" 130#include "aout/ar.h" 131 132static bfd_boolean aout_get_external_symbols 133 PARAMS ((bfd *)); 134static bfd_boolean translate_from_native_sym_flags 135 PARAMS ((bfd *, aout_symbol_type *)); 136static bfd_boolean translate_to_native_sym_flags 137 PARAMS ((bfd *, asymbol *, struct external_nlist *)); 138static void adjust_o_magic 139 PARAMS ((bfd *, struct internal_exec *)); 140static void adjust_z_magic 141 PARAMS ((bfd *, struct internal_exec *)); 142static void adjust_n_magic 143 PARAMS ((bfd *, struct internal_exec *)); 144reloc_howto_type * NAME(aout,reloc_type_lookup) 145 PARAMS ((bfd *, bfd_reloc_code_real_type)); 146 147/* 148SUBSECTION 149 Relocations 150 151DESCRIPTION 152 The file @file{aoutx.h} provides for both the @emph{standard} 153 and @emph{extended} forms of a.out relocation records. 154 155 The standard records contain only an 156 address, a symbol index, and a type field. The extended records 157 (used on 29ks and sparcs) also have a full integer for an 158 addend. */ 159 160#ifndef CTOR_TABLE_RELOC_HOWTO 161#define CTOR_TABLE_RELOC_IDX 2 162#define CTOR_TABLE_RELOC_HOWTO(BFD) \ 163 ((obj_reloc_entry_size (BFD) == RELOC_EXT_SIZE \ 164 ? howto_table_ext : howto_table_std) \ 165 + CTOR_TABLE_RELOC_IDX) 166#endif 167 168#ifndef MY_swap_std_reloc_in 169#define MY_swap_std_reloc_in NAME(aout,swap_std_reloc_in) 170#endif 171 172#ifndef MY_swap_ext_reloc_in 173#define MY_swap_ext_reloc_in NAME(aout,swap_ext_reloc_in) 174#endif 175 176#ifndef MY_swap_std_reloc_out 177#define MY_swap_std_reloc_out NAME(aout,swap_std_reloc_out) 178#endif 179 180#ifndef MY_swap_ext_reloc_out 181#define MY_swap_ext_reloc_out NAME(aout,swap_ext_reloc_out) 182#endif 183 184#ifndef MY_final_link_relocate 185#define MY_final_link_relocate _bfd_final_link_relocate 186#endif 187 188#ifndef MY_relocate_contents 189#define MY_relocate_contents _bfd_relocate_contents 190#endif 191 192#define howto_table_ext NAME(aout,ext_howto_table) 193#define howto_table_std NAME(aout,std_howto_table) 194 195reloc_howto_type howto_table_ext[] = 196{ 197 /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone. */ 198 HOWTO(RELOC_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,0,"8", FALSE, 0,0x000000ff, FALSE), 199 HOWTO(RELOC_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,0,"16", FALSE, 0,0x0000ffff, FALSE), 200 HOWTO(RELOC_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,0,"32", FALSE, 0,0xffffffff, FALSE), 201 HOWTO(RELOC_DISP8, 0, 0, 8, TRUE, 0, complain_overflow_signed,0,"DISP8", FALSE, 0,0x000000ff, FALSE), 202 HOWTO(RELOC_DISP16, 0, 1, 16, TRUE, 0, complain_overflow_signed,0,"DISP16", FALSE, 0,0x0000ffff, FALSE), 203 HOWTO(RELOC_DISP32, 0, 2, 32, TRUE, 0, complain_overflow_signed,0,"DISP32", FALSE, 0,0xffffffff, FALSE), 204 HOWTO(RELOC_WDISP30,2, 2, 30, TRUE, 0, complain_overflow_signed,0,"WDISP30", FALSE, 0,0x3fffffff, FALSE), 205 HOWTO(RELOC_WDISP22,2, 2, 22, TRUE, 0, complain_overflow_signed,0,"WDISP22", FALSE, 0,0x003fffff, FALSE), 206 HOWTO(RELOC_HI22, 10, 2, 22, FALSE, 0, complain_overflow_bitfield,0,"HI22", FALSE, 0,0x003fffff, FALSE), 207 HOWTO(RELOC_22, 0, 2, 22, FALSE, 0, complain_overflow_bitfield,0,"22", FALSE, 0,0x003fffff, FALSE), 208 HOWTO(RELOC_13, 0, 2, 13, FALSE, 0, complain_overflow_bitfield,0,"13", FALSE, 0,0x00001fff, FALSE), 209 HOWTO(RELOC_LO10, 0, 2, 10, FALSE, 0, complain_overflow_dont,0,"LO10", FALSE, 0,0x000003ff, FALSE), 210 HOWTO(RELOC_SFA_BASE,0, 2, 32, FALSE, 0, complain_overflow_bitfield,0,"SFA_BASE", FALSE, 0,0xffffffff, FALSE), 211 HOWTO(RELOC_SFA_OFF13,0,2, 32, FALSE, 0, complain_overflow_bitfield,0,"SFA_OFF13",FALSE, 0,0xffffffff, FALSE), 212 HOWTO(RELOC_BASE10, 0, 2, 10, FALSE, 0, complain_overflow_dont,0,"BASE10", FALSE, 0,0x000003ff, FALSE), 213 HOWTO(RELOC_BASE13, 0, 2, 13, FALSE, 0, complain_overflow_signed,0,"BASE13", FALSE, 0,0x00001fff, FALSE), 214 HOWTO(RELOC_BASE22, 10, 2, 22, FALSE, 0, complain_overflow_bitfield,0,"BASE22", FALSE, 0,0x003fffff, FALSE), 215 HOWTO(RELOC_PC10, 0, 2, 10, TRUE, 0, complain_overflow_dont,0,"PC10", FALSE, 0,0x000003ff, TRUE), 216 HOWTO(RELOC_PC22, 10, 2, 22, TRUE, 0, complain_overflow_signed,0,"PC22", FALSE, 0,0x003fffff, TRUE), 217 HOWTO(RELOC_JMP_TBL,2, 2, 30, TRUE, 0, complain_overflow_signed,0,"JMP_TBL", FALSE, 0,0x3fffffff, FALSE), 218 HOWTO(RELOC_SEGOFF16,0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"SEGOFF16", FALSE, 0,0x00000000, FALSE), 219 HOWTO(RELOC_GLOB_DAT,0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"GLOB_DAT", FALSE, 0,0x00000000, FALSE), 220 HOWTO(RELOC_JMP_SLOT,0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"JMP_SLOT", FALSE, 0,0x00000000, FALSE), 221 HOWTO(RELOC_RELATIVE,0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"RELATIVE", FALSE, 0,0x00000000, FALSE), 222 HOWTO(0, 0, 0, 0, FALSE, 0, complain_overflow_dont, 0, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE), 223 HOWTO(0, 0, 0, 0, FALSE, 0, complain_overflow_dont, 0, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE), 224#define RELOC_SPARC_REV32 RELOC_WDISP19 225 HOWTO(RELOC_SPARC_REV32, 0, 2, 32, FALSE, 0, complain_overflow_dont,0,"R_SPARC_REV32", FALSE, 0,0xffffffff, FALSE), 226}; 227 228/* Convert standard reloc records to "arelent" format (incl byte swap). */ 229 230reloc_howto_type howto_table_std[] = 231{ 232 /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone. */ 233HOWTO ( 0, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,0,"8", TRUE, 0x000000ff,0x000000ff, FALSE), 234HOWTO ( 1, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,0,"16", TRUE, 0x0000ffff,0x0000ffff, FALSE), 235HOWTO ( 2, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,0,"32", TRUE, 0xffffffff,0xffffffff, FALSE), 236HOWTO ( 3, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,0,"64", TRUE, 0xdeaddead,0xdeaddead, FALSE), 237HOWTO ( 4, 0, 0, 8, TRUE, 0, complain_overflow_signed, 0,"DISP8", TRUE, 0x000000ff,0x000000ff, FALSE), 238HOWTO ( 5, 0, 1, 16, TRUE, 0, complain_overflow_signed, 0,"DISP16", TRUE, 0x0000ffff,0x0000ffff, FALSE), 239HOWTO ( 6, 0, 2, 32, TRUE, 0, complain_overflow_signed, 0,"DISP32", TRUE, 0xffffffff,0xffffffff, FALSE), 240HOWTO ( 7, 0, 4, 64, TRUE, 0, complain_overflow_signed, 0,"DISP64", TRUE, 0xfeedface,0xfeedface, FALSE), 241HOWTO ( 8, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"GOT_REL", FALSE, 0,0x00000000, FALSE), 242HOWTO ( 9, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,0,"BASE16", FALSE,0xffffffff,0xffffffff, FALSE), 243HOWTO (10, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,0,"BASE32", FALSE,0xffffffff,0xffffffff, FALSE), 244EMPTY_HOWTO (-1), 245EMPTY_HOWTO (-1), 246EMPTY_HOWTO (-1), 247EMPTY_HOWTO (-1), 248EMPTY_HOWTO (-1), 249 HOWTO (16, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"JMP_TABLE", FALSE, 0,0x00000000, FALSE), 250EMPTY_HOWTO (-1), 251EMPTY_HOWTO (-1), 252EMPTY_HOWTO (-1), 253EMPTY_HOWTO (-1), 254EMPTY_HOWTO (-1), 255EMPTY_HOWTO (-1), 256EMPTY_HOWTO (-1), 257EMPTY_HOWTO (-1), 258EMPTY_HOWTO (-1), 259EMPTY_HOWTO (-1), 260EMPTY_HOWTO (-1), 261EMPTY_HOWTO (-1), 262EMPTY_HOWTO (-1), 263EMPTY_HOWTO (-1), 264EMPTY_HOWTO (-1), 265 HOWTO (32, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"RELATIVE", FALSE, 0,0x00000000, FALSE), 266EMPTY_HOWTO (-1), 267EMPTY_HOWTO (-1), 268EMPTY_HOWTO (-1), 269EMPTY_HOWTO (-1), 270EMPTY_HOWTO (-1), 271EMPTY_HOWTO (-1), 272EMPTY_HOWTO (-1), 273 HOWTO (40, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"BASEREL", FALSE, 0,0x00000000, FALSE), 274}; 275 276#define TABLE_SIZE(TABLE) (sizeof (TABLE) / sizeof (TABLE[0])) 277 278reloc_howto_type * 279NAME(aout,reloc_type_lookup) (abfd,code) 280 bfd *abfd; 281 bfd_reloc_code_real_type code; 282{ 283#define EXT(i, j) case i: return &howto_table_ext[j] 284#define STD(i, j) case i: return &howto_table_std[j] 285 int ext = obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE; 286 287 if (code == BFD_RELOC_CTOR) 288 switch (bfd_get_arch_info (abfd)->bits_per_address) 289 { 290 case 32: 291 code = BFD_RELOC_32; 292 break; 293 case 64: 294 code = BFD_RELOC_64; 295 break; 296 } 297 298 if (ext) 299 switch (code) 300 { 301 EXT (BFD_RELOC_8, 0); 302 EXT (BFD_RELOC_16, 1); 303 EXT (BFD_RELOC_32, 2); 304 EXT (BFD_RELOC_HI22, 8); 305 EXT (BFD_RELOC_LO10, 11); 306 EXT (BFD_RELOC_32_PCREL_S2, 6); 307 EXT (BFD_RELOC_SPARC_WDISP22, 7); 308 EXT (BFD_RELOC_SPARC13, 10); 309 EXT (BFD_RELOC_SPARC_GOT10, 14); 310 EXT (BFD_RELOC_SPARC_BASE13, 15); 311 EXT (BFD_RELOC_SPARC_GOT13, 15); 312 EXT (BFD_RELOC_SPARC_GOT22, 16); 313 EXT (BFD_RELOC_SPARC_PC10, 17); 314 EXT (BFD_RELOC_SPARC_PC22, 18); 315 EXT (BFD_RELOC_SPARC_WPLT30, 19); 316 EXT (BFD_RELOC_SPARC_REV32, 26); 317 default: return (reloc_howto_type *) NULL; 318 } 319 else 320 /* std relocs. */ 321 switch (code) 322 { 323 STD (BFD_RELOC_8, 0); 324 STD (BFD_RELOC_16, 1); 325 STD (BFD_RELOC_32, 2); 326 STD (BFD_RELOC_8_PCREL, 4); 327 STD (BFD_RELOC_16_PCREL, 5); 328 STD (BFD_RELOC_32_PCREL, 6); 329 STD (BFD_RELOC_16_BASEREL, 9); 330 STD (BFD_RELOC_32_BASEREL, 10); 331 default: return (reloc_howto_type *) NULL; 332 } 333} 334 335/* 336SUBSECTION 337 Internal entry points 338 339DESCRIPTION 340 @file{aoutx.h} exports several routines for accessing the 341 contents of an a.out file, which are gathered and exported in 342 turn by various format specific files (eg sunos.c). 343 344*/ 345 346/* 347FUNCTION 348 aout_@var{size}_swap_exec_header_in 349 350SYNOPSIS 351 void aout_@var{size}_swap_exec_header_in, 352 (bfd *abfd, 353 struct external_exec *raw_bytes, 354 struct internal_exec *execp); 355 356DESCRIPTION 357 Swap the information in an executable header @var{raw_bytes} taken 358 from a raw byte stream memory image into the internal exec header 359 structure @var{execp}. 360*/ 361 362#ifndef NAME_swap_exec_header_in 363void 364NAME(aout,swap_exec_header_in) (abfd, raw_bytes, execp) 365 bfd *abfd; 366 struct external_exec *raw_bytes; 367 struct internal_exec *execp; 368{ 369 struct external_exec *bytes = (struct external_exec *)raw_bytes; 370 371 /* The internal_exec structure has some fields that are unused in this 372 configuration (IE for i960), so ensure that all such uninitialized 373 fields are zero'd out. There are places where two of these structs 374 are memcmp'd, and thus the contents do matter. */ 375 memset ((PTR) execp, 0, sizeof (struct internal_exec)); 376 /* Now fill in fields in the execp, from the bytes in the raw data. */ 377 execp->a_info = H_GET_32 (abfd, bytes->e_info); 378 execp->a_text = GET_WORD (abfd, bytes->e_text); 379 execp->a_data = GET_WORD (abfd, bytes->e_data); 380 execp->a_bss = GET_WORD (abfd, bytes->e_bss); 381 execp->a_syms = GET_WORD (abfd, bytes->e_syms); 382 execp->a_entry = GET_WORD (abfd, bytes->e_entry); 383 execp->a_trsize = GET_WORD (abfd, bytes->e_trsize); 384 execp->a_drsize = GET_WORD (abfd, bytes->e_drsize); 385} 386#define NAME_swap_exec_header_in NAME(aout,swap_exec_header_in) 387#endif 388 389/* 390FUNCTION 391 aout_@var{size}_swap_exec_header_out 392 393SYNOPSIS 394 void aout_@var{size}_swap_exec_header_out 395 (bfd *abfd, 396 struct internal_exec *execp, 397 struct external_exec *raw_bytes); 398 399DESCRIPTION 400 Swap the information in an internal exec header structure 401 @var{execp} into the buffer @var{raw_bytes} ready for writing to disk. 402*/ 403void 404NAME(aout,swap_exec_header_out) (abfd, execp, raw_bytes) 405 bfd *abfd; 406 struct internal_exec *execp; 407 struct external_exec *raw_bytes; 408{ 409 struct external_exec *bytes = (struct external_exec *)raw_bytes; 410 411 /* Now fill in fields in the raw data, from the fields in the exec struct. */ 412 H_PUT_32 (abfd, execp->a_info , bytes->e_info); 413 PUT_WORD (abfd, execp->a_text , bytes->e_text); 414 PUT_WORD (abfd, execp->a_data , bytes->e_data); 415 PUT_WORD (abfd, execp->a_bss , bytes->e_bss); 416 PUT_WORD (abfd, execp->a_syms , bytes->e_syms); 417 PUT_WORD (abfd, execp->a_entry , bytes->e_entry); 418 PUT_WORD (abfd, execp->a_trsize, bytes->e_trsize); 419 PUT_WORD (abfd, execp->a_drsize, bytes->e_drsize); 420} 421 422/* Make all the section for an a.out file. */ 423 424bfd_boolean 425NAME(aout,make_sections) (abfd) 426 bfd *abfd; 427{ 428 if (obj_textsec (abfd) == (asection *) NULL 429 && bfd_make_section (abfd, ".text") == (asection *) NULL) 430 return FALSE; 431 if (obj_datasec (abfd) == (asection *) NULL 432 && bfd_make_section (abfd, ".data") == (asection *) NULL) 433 return FALSE; 434 if (obj_bsssec (abfd) == (asection *) NULL 435 && bfd_make_section (abfd, ".bss") == (asection *) NULL) 436 return FALSE; 437 return TRUE; 438} 439 440/* 441FUNCTION 442 aout_@var{size}_some_aout_object_p 443 444SYNOPSIS 445 const bfd_target *aout_@var{size}_some_aout_object_p 446 (bfd *abfd, 447 const bfd_target *(*callback_to_real_object_p) ()); 448 449DESCRIPTION 450 Some a.out variant thinks that the file open in @var{abfd} 451 checking is an a.out file. Do some more checking, and set up 452 for access if it really is. Call back to the calling 453 environment's "finish up" function just before returning, to 454 handle any last-minute setup. 455*/ 456 457const bfd_target * 458NAME(aout,some_aout_object_p) (abfd, execp, callback_to_real_object_p) 459 bfd *abfd; 460 struct internal_exec *execp; 461 const bfd_target *(*callback_to_real_object_p) PARAMS ((bfd *)); 462{ 463 struct aout_data_struct *rawptr, *oldrawptr; 464 const bfd_target *result; 465 bfd_size_type amt = sizeof (struct aout_data_struct); 466 467 rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, amt); 468 if (rawptr == NULL) 469 return 0; 470 471 oldrawptr = abfd->tdata.aout_data; 472 abfd->tdata.aout_data = rawptr; 473 474 /* Copy the contents of the old tdata struct. 475 In particular, we want the subformat, since for hpux it was set in 476 hp300hpux.c:swap_exec_header_in and will be used in 477 hp300hpux.c:callback. */ 478 if (oldrawptr != NULL) 479 *abfd->tdata.aout_data = *oldrawptr; 480 481 abfd->tdata.aout_data->a.hdr = &rawptr->e; 482 /* Copy in the internal_exec struct. */ 483 *(abfd->tdata.aout_data->a.hdr) = *execp; 484 execp = abfd->tdata.aout_data->a.hdr; 485 486 /* Set the file flags. */ 487 abfd->flags = BFD_NO_FLAGS; 488 if (execp->a_drsize || execp->a_trsize) 489 abfd->flags |= HAS_RELOC; 490 /* Setting of EXEC_P has been deferred to the bottom of this function. */ 491 if (execp->a_syms) 492 abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS; 493 if (N_DYNAMIC (*execp)) 494 abfd->flags |= DYNAMIC; 495 496 if (N_MAGIC (*execp) == ZMAGIC) 497 { 498 abfd->flags |= D_PAGED | WP_TEXT; 499 adata (abfd).magic = z_magic; 500 } 501 else if (N_MAGIC (*execp) == QMAGIC) 502 { 503 abfd->flags |= D_PAGED | WP_TEXT; 504 adata (abfd).magic = z_magic; 505 adata (abfd).subformat = q_magic_format; 506 } 507 else if (N_MAGIC (*execp) == NMAGIC) 508 { 509 abfd->flags |= WP_TEXT; 510 adata (abfd).magic = n_magic; 511 } 512 else if (N_MAGIC (*execp) == OMAGIC 513 || N_MAGIC (*execp) == BMAGIC) 514 adata (abfd).magic = o_magic; 515 else 516 { 517 /* Should have been checked with N_BADMAG before this routine 518 was called. */ 519 abort (); 520 } 521 522 bfd_get_start_address (abfd) = execp->a_entry; 523 524 obj_aout_symbols (abfd) = (aout_symbol_type *)NULL; 525 bfd_get_symcount (abfd) = execp->a_syms / sizeof (struct external_nlist); 526 527 /* The default relocation entry size is that of traditional V7 Unix. */ 528 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; 529 530 /* The default symbol entry size is that of traditional Unix. */ 531 obj_symbol_entry_size (abfd) = EXTERNAL_NLIST_SIZE; 532 533#ifdef USE_MMAP 534 bfd_init_window (&obj_aout_sym_window (abfd)); 535 bfd_init_window (&obj_aout_string_window (abfd)); 536#endif 537 obj_aout_external_syms (abfd) = NULL; 538 obj_aout_external_strings (abfd) = NULL; 539 obj_aout_sym_hashes (abfd) = NULL; 540 541 if (! NAME(aout,make_sections) (abfd)) 542 goto error_ret; 543 544 obj_datasec (abfd)->size = execp->a_data; 545 obj_bsssec (abfd)->size = execp->a_bss; 546 547 obj_textsec (abfd)->flags = 548 (execp->a_trsize != 0 549 ? (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_RELOC) 550 : (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)); 551 obj_datasec (abfd)->flags = 552 (execp->a_drsize != 0 553 ? (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS | SEC_RELOC) 554 : (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS)); 555 obj_bsssec (abfd)->flags = SEC_ALLOC; 556 557#ifdef THIS_IS_ONLY_DOCUMENTATION 558 /* The common code can't fill in these things because they depend 559 on either the start address of the text segment, the rounding 560 up of virtual addresses between segments, or the starting file 561 position of the text segment -- all of which varies among different 562 versions of a.out. */ 563 564 /* Call back to the format-dependent code to fill in the rest of the 565 fields and do any further cleanup. Things that should be filled 566 in by the callback: */ 567 568 struct exec *execp = exec_hdr (abfd); 569 570 obj_textsec (abfd)->size = N_TXTSIZE (*execp); 571 /* Data and bss are already filled in since they're so standard. */ 572 573 /* The virtual memory addresses of the sections. */ 574 obj_textsec (abfd)->vma = N_TXTADDR (*execp); 575 obj_datasec (abfd)->vma = N_DATADDR (*execp); 576 obj_bsssec (abfd)->vma = N_BSSADDR (*execp); 577 578 /* The file offsets of the sections. */ 579 obj_textsec (abfd)->filepos = N_TXTOFF (*execp); 580 obj_datasec (abfd)->filepos = N_DATOFF (*execp); 581 582 /* The file offsets of the relocation info. */ 583 obj_textsec (abfd)->rel_filepos = N_TRELOFF (*execp); 584 obj_datasec (abfd)->rel_filepos = N_DRELOFF (*execp); 585 586 /* The file offsets of the string table and symbol table. */ 587 obj_str_filepos (abfd) = N_STROFF (*execp); 588 obj_sym_filepos (abfd) = N_SYMOFF (*execp); 589 590 /* Determine the architecture and machine type of the object file. */ 591 switch (N_MACHTYPE (*exec_hdr (abfd))) 592 { 593 default: 594 abfd->obj_arch = bfd_arch_obscure; 595 break; 596 } 597 598 adata (abfd)->page_size = TARGET_PAGE_SIZE; 599 adata (abfd)->segment_size = SEGMENT_SIZE; 600 adata (abfd)->exec_bytes_size = EXEC_BYTES_SIZE; 601 602 return abfd->xvec; 603 604 /* The architecture is encoded in various ways in various a.out variants, 605 or is not encoded at all in some of them. The relocation size depends 606 on the architecture and the a.out variant. Finally, the return value 607 is the bfd_target vector in use. If an error occurs, return zero and 608 set bfd_error to the appropriate error code. 609 610 Formats such as b.out, which have additional fields in the a.out 611 header, should cope with them in this callback as well. */ 612#endif /* DOCUMENTATION */ 613 614 result = (*callback_to_real_object_p) (abfd); 615 616 /* Now that the segment addresses have been worked out, take a better 617 guess at whether the file is executable. If the entry point 618 is within the text segment, assume it is. (This makes files 619 executable even if their entry point address is 0, as long as 620 their text starts at zero.). 621 622 This test had to be changed to deal with systems where the text segment 623 runs at a different location than the default. The problem is that the 624 entry address can appear to be outside the text segment, thus causing an 625 erroneous conclusion that the file isn't executable. 626 627 To fix this, we now accept any non-zero entry point as an indication of 628 executability. This will work most of the time, since only the linker 629 sets the entry point, and that is likely to be non-zero for most systems. */ 630 631 if (execp->a_entry != 0 632 || (execp->a_entry >= obj_textsec (abfd)->vma 633 && execp->a_entry < (obj_textsec (abfd)->vma 634 + obj_textsec (abfd)->size))) 635 abfd->flags |= EXEC_P; 636#ifdef STAT_FOR_EXEC 637 else 638 { 639 struct stat stat_buf; 640 641 /* The original heuristic doesn't work in some important cases. 642 The a.out file has no information about the text start 643 address. For files (like kernels) linked to non-standard 644 addresses (ld -Ttext nnn) the entry point may not be between 645 the default text start (obj_textsec(abfd)->vma) and 646 (obj_textsec(abfd)->vma) + text size. This is not just a mach 647 issue. Many kernels are loaded at non standard addresses. */ 648 if (abfd->iostream != NULL 649 && (abfd->flags & BFD_IN_MEMORY) == 0 650 && (fstat (fileno ((FILE *) (abfd->iostream)), &stat_buf) == 0) 651 && ((stat_buf.st_mode & 0111) != 0)) 652 abfd->flags |= EXEC_P; 653 } 654#endif /* STAT_FOR_EXEC */ 655 656 if (result) 657 { 658#if 0 /* These should be set correctly anyways. */ 659 abfd->sections = obj_textsec (abfd); 660 obj_textsec (abfd)->next = obj_datasec (abfd); 661 obj_datasec (abfd)->next = obj_bsssec (abfd); 662#endif 663 return result; 664 } 665 666 error_ret: 667 bfd_release (abfd, rawptr); 668 abfd->tdata.aout_data = oldrawptr; 669 return NULL; 670} 671 672/* 673FUNCTION 674 aout_@var{size}_mkobject 675 676SYNOPSIS 677 bfd_boolean aout_@var{size}_mkobject, (bfd *abfd); 678 679DESCRIPTION 680 Initialize BFD @var{abfd} for use with a.out files. 681*/ 682 683bfd_boolean 684NAME(aout,mkobject) (abfd) 685 bfd *abfd; 686{ 687 struct aout_data_struct *rawptr; 688 bfd_size_type amt = sizeof (struct aout_data_struct); 689 690 bfd_set_error (bfd_error_system_call); 691 692 rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, amt); 693 if (rawptr == NULL) 694 return FALSE; 695 696 abfd->tdata.aout_data = rawptr; 697 exec_hdr (abfd) = &(rawptr->e); 698 699 obj_textsec (abfd) = (asection *) NULL; 700 obj_datasec (abfd) = (asection *) NULL; 701 obj_bsssec (abfd) = (asection *) NULL; 702 703 return TRUE; 704} 705 706/* 707FUNCTION 708 aout_@var{size}_machine_type 709 710SYNOPSIS 711 enum machine_type aout_@var{size}_machine_type 712 (enum bfd_architecture arch, 713 unsigned long machine)); 714 715DESCRIPTION 716 Keep track of machine architecture and machine type for 717 a.out's. Return the <<machine_type>> for a particular 718 architecture and machine, or <<M_UNKNOWN>> if that exact architecture 719 and machine can't be represented in a.out format. 720 721 If the architecture is understood, machine type 0 (default) 722 is always understood. 723*/ 724 725enum machine_type 726NAME(aout,machine_type) (arch, machine, unknown) 727 enum bfd_architecture arch; 728 unsigned long machine; 729 bfd_boolean *unknown; 730{ 731 enum machine_type arch_flags; 732 733 arch_flags = M_UNKNOWN; 734 *unknown = TRUE; 735 736 switch (arch) 737 { 738 case bfd_arch_sparc: 739 if (machine == 0 740 || machine == bfd_mach_sparc 741 || machine == bfd_mach_sparc_sparclite 742 || machine == bfd_mach_sparc_sparclite_le 743 || machine == bfd_mach_sparc_v9) 744 arch_flags = M_SPARC; 745 else if (machine == bfd_mach_sparc_sparclet) 746 arch_flags = M_SPARCLET; 747 break; 748 749 case bfd_arch_m68k: 750 switch (machine) 751 { 752 case 0: arch_flags = M_68010; break; 753 case bfd_mach_m68000: arch_flags = M_UNKNOWN; *unknown = FALSE; break; 754 case bfd_mach_m68010: arch_flags = M_68010; break; 755 case bfd_mach_m68020: arch_flags = M_68020; break; 756 default: arch_flags = M_UNKNOWN; break; 757 } 758 break; 759 760 case bfd_arch_i386: 761 if (machine == 0 762 || machine == bfd_mach_i386_i386 763 || machine == bfd_mach_i386_i386_intel_syntax) 764 arch_flags = M_386; 765 break; 766 767 case bfd_arch_a29k: 768 if (machine == 0) 769 arch_flags = M_29K; 770 break; 771 772 case bfd_arch_arm: 773 if (machine == 0) 774 arch_flags = M_ARM; 775 break; 776 777 case bfd_arch_mips: 778 switch (machine) 779 { 780 case 0: 781 case bfd_mach_mips3000: 782 case bfd_mach_mips3900: 783 arch_flags = M_MIPS1; 784 break; 785 case bfd_mach_mips6000: 786 arch_flags = M_MIPS2; 787 break; 788 case bfd_mach_mips4000: 789 case bfd_mach_mips4010: 790 case bfd_mach_mips4100: 791 case bfd_mach_mips4300: 792 case bfd_mach_mips4400: 793 case bfd_mach_mips4600: 794 case bfd_mach_mips4650: 795 case bfd_mach_mips8000: 796 case bfd_mach_mips10000: 797 case bfd_mach_mips12000: 798 case bfd_mach_mips16: 799 case bfd_mach_mipsisa32: 800 case bfd_mach_mipsisa32r2: 801 case bfd_mach_mips5: 802 case bfd_mach_mipsisa64: 803 case bfd_mach_mipsisa64r2: 804 case bfd_mach_mips_sb1: 805 /* FIXME: These should be MIPS3, MIPS4, MIPS16, MIPS32, etc. */ 806 arch_flags = M_MIPS2; 807 break; 808 default: 809 arch_flags = M_UNKNOWN; 810 break; 811 } 812 break; 813 814 case bfd_arch_ns32k: 815 switch (machine) 816 { 817 case 0: arch_flags = M_NS32532; break; 818 case 32032: arch_flags = M_NS32032; break; 819 case 32532: arch_flags = M_NS32532; break; 820 default: arch_flags = M_UNKNOWN; break; 821 } 822 break; 823 824 case bfd_arch_vax: 825 *unknown = FALSE; 826 break; 827 828 case bfd_arch_cris: 829 if (machine == 0 || machine == 255) 830 arch_flags = M_CRIS; 831 break; 832 833 case bfd_arch_m88k: 834 *unknown = FALSE; 835 break; 836 837 default: 838 arch_flags = M_UNKNOWN; 839 } 840 841 if (arch_flags != M_UNKNOWN) 842 *unknown = FALSE; 843 844 return arch_flags; 845} 846 847/* 848FUNCTION 849 aout_@var{size}_set_arch_mach 850 851SYNOPSIS 852 bfd_boolean aout_@var{size}_set_arch_mach, 853 (bfd *, 854 enum bfd_architecture arch, 855 unsigned long machine)); 856 857DESCRIPTION 858 Set the architecture and the machine of the BFD @var{abfd} to the 859 values @var{arch} and @var{machine}. Verify that @var{abfd}'s format 860 can support the architecture required. 861*/ 862 863bfd_boolean 864NAME(aout,set_arch_mach) (abfd, arch, machine) 865 bfd *abfd; 866 enum bfd_architecture arch; 867 unsigned long machine; 868{ 869 if (! bfd_default_set_arch_mach (abfd, arch, machine)) 870 return FALSE; 871 872 if (arch != bfd_arch_unknown) 873 { 874 bfd_boolean unknown; 875 876 NAME(aout,machine_type) (arch, machine, &unknown); 877 if (unknown) 878 return FALSE; 879 } 880 881 /* Determine the size of a relocation entry. */ 882 switch (arch) 883 { 884 case bfd_arch_sparc: 885 case bfd_arch_a29k: 886 case bfd_arch_mips: 887 obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE; 888 break; 889 default: 890 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; 891 break; 892 } 893 894 return (*aout_backend_info (abfd)->set_sizes) (abfd); 895} 896 897static void 898adjust_o_magic (abfd, execp) 899 bfd *abfd; 900 struct internal_exec *execp; 901{ 902 file_ptr pos = adata (abfd).exec_bytes_size; 903 bfd_vma vma = 0; 904 int pad = 0; 905 906 /* Text. */ 907 obj_textsec (abfd)->filepos = pos; 908 if (!obj_textsec (abfd)->user_set_vma) 909 obj_textsec (abfd)->vma = vma; 910 else 911 vma = obj_textsec (abfd)->vma; 912 913 pos += obj_textsec (abfd)->size; 914 vma += obj_textsec (abfd)->size; 915 916 /* Data. */ 917 if (!obj_datasec (abfd)->user_set_vma) 918 { 919#if 0 /* ?? Does alignment in the file image really matter? */ 920 pad = align_power (vma, obj_datasec (abfd)->alignment_power) - vma; 921#endif 922 obj_textsec (abfd)->size += pad; 923 pos += pad; 924 vma += pad; 925 obj_datasec (abfd)->vma = vma; 926 } 927 else 928 vma = obj_datasec (abfd)->vma; 929 obj_datasec (abfd)->filepos = pos; 930 pos += obj_datasec (abfd)->size; 931 vma += obj_datasec (abfd)->size; 932 933 /* BSS. */ 934 if (!obj_bsssec (abfd)->user_set_vma) 935 { 936#if 0 937 pad = align_power (vma, obj_bsssec (abfd)->alignment_power) - vma; 938#endif 939 obj_datasec (abfd)->size += pad; 940 pos += pad; 941 vma += pad; 942 obj_bsssec (abfd)->vma = vma; 943 } 944 else 945 { 946 /* The VMA of the .bss section is set by the VMA of the 947 .data section plus the size of the .data section. We may 948 need to add padding bytes to make this true. */ 949 pad = obj_bsssec (abfd)->vma - vma; 950 if (pad > 0) 951 { 952 obj_datasec (abfd)->size += pad; 953 pos += pad; 954 } 955 } 956 obj_bsssec (abfd)->filepos = pos; 957 958 /* Fix up the exec header. */ 959 execp->a_text = obj_textsec (abfd)->size; 960 execp->a_data = obj_datasec (abfd)->size; 961 execp->a_bss = obj_bsssec (abfd)->size; 962 N_SET_MAGIC (*execp, OMAGIC); 963} 964 965static void 966adjust_z_magic (abfd, execp) 967 bfd *abfd; 968 struct internal_exec *execp; 969{ 970 bfd_size_type data_pad, text_pad; 971 file_ptr text_end; 972 const struct aout_backend_data *abdp; 973 int ztih; /* Nonzero if text includes exec header. */ 974 975 abdp = aout_backend_info (abfd); 976 977 /* Text. */ 978 ztih = (abdp != NULL 979 && (abdp->text_includes_header 980 || obj_aout_subformat (abfd) == q_magic_format)); 981 obj_textsec (abfd)->filepos = (ztih 982 ? adata (abfd).exec_bytes_size 983 : adata (abfd).zmagic_disk_block_size); 984 if (! obj_textsec (abfd)->user_set_vma) 985 { 986 /* ?? Do we really need to check for relocs here? */ 987 obj_textsec (abfd)->vma = ((abfd->flags & HAS_RELOC) 988 ? 0 989 : (ztih 990 ? (abdp->default_text_vma 991 + adata (abfd).exec_bytes_size) 992 : abdp->default_text_vma)); 993 text_pad = 0; 994 } 995 else 996 { 997 /* The .text section is being loaded at an unusual address. We 998 may need to pad it such that the .data section starts at a page 999 boundary. */ 1000 if (ztih) 1001 text_pad = ((obj_textsec (abfd)->filepos - obj_textsec (abfd)->vma) 1002 & (adata (abfd).page_size - 1)); 1003 else 1004 text_pad = ((- obj_textsec (abfd)->vma) 1005 & (adata (abfd).page_size - 1)); 1006 } 1007 1008 /* Find start of data. */ 1009 if (ztih) 1010 { 1011 text_end = obj_textsec (abfd)->filepos + obj_textsec (abfd)->size; 1012 text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end; 1013 } 1014 else 1015 { 1016 /* Note that if page_size == zmagic_disk_block_size, then 1017 filepos == page_size, and this case is the same as the ztih 1018 case. */ 1019 text_end = obj_textsec (abfd)->size; 1020 text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end; 1021 text_end += obj_textsec (abfd)->filepos; 1022 } 1023 obj_textsec (abfd)->size += text_pad; 1024 text_end += text_pad; 1025 1026 /* Data. */ 1027 if (!obj_datasec (abfd)->user_set_vma) 1028 { 1029 bfd_vma vma; 1030 vma = obj_textsec (abfd)->vma + obj_textsec (abfd)->size; 1031 obj_datasec (abfd)->vma = BFD_ALIGN (vma, adata (abfd).segment_size); 1032 } 1033 if (abdp && abdp->zmagic_mapped_contiguous) 1034 { 1035 asection * text = obj_textsec (abfd); 1036 asection * data = obj_datasec (abfd); 1037 1038 text_pad = data->vma - (text->vma + text->size); 1039 /* Only pad the text section if the data 1040 section is going to be placed after it. */ 1041 if (text_pad > 0) 1042 text->size += text_pad; 1043 } 1044 obj_datasec (abfd)->filepos = (obj_textsec (abfd)->filepos 1045 + obj_textsec (abfd)->size); 1046 1047 /* Fix up exec header while we're at it. */ 1048 execp->a_text = obj_textsec (abfd)->size; 1049 if (ztih && (!abdp || (abdp && !abdp->exec_header_not_counted))) 1050 execp->a_text += adata (abfd).exec_bytes_size; 1051 if (obj_aout_subformat (abfd) == q_magic_format) 1052 N_SET_MAGIC (*execp, QMAGIC); 1053 else 1054 N_SET_MAGIC (*execp, ZMAGIC); 1055 1056 /* Spec says data section should be rounded up to page boundary. */ 1057 obj_datasec (abfd)->size 1058 = align_power (obj_datasec (abfd)->size, 1059 obj_bsssec (abfd)->alignment_power); 1060 execp->a_data = BFD_ALIGN (obj_datasec (abfd)->size, 1061 adata (abfd).page_size); 1062 data_pad = execp->a_data - obj_datasec (abfd)->size; 1063 1064 /* BSS. */ 1065 if (!obj_bsssec (abfd)->user_set_vma) 1066 obj_bsssec (abfd)->vma = (obj_datasec (abfd)->vma 1067 + obj_datasec (abfd)->size); 1068 /* If the BSS immediately follows the data section and extra space 1069 in the page is left after the data section, fudge data 1070 in the header so that the bss section looks smaller by that 1071 amount. We'll start the bss section there, and lie to the OS. 1072 (Note that a linker script, as well as the above assignment, 1073 could have explicitly set the BSS vma to immediately follow 1074 the data section.) */ 1075 if (align_power (obj_bsssec (abfd)->vma, obj_bsssec (abfd)->alignment_power) 1076 == obj_datasec (abfd)->vma + obj_datasec (abfd)->size) 1077 execp->a_bss = (data_pad > obj_bsssec (abfd)->size 1078 ? 0 : obj_bsssec (abfd)->size - data_pad); 1079 else 1080 execp->a_bss = obj_bsssec (abfd)->size; 1081} 1082 1083static void 1084adjust_n_magic (abfd, execp) 1085 bfd *abfd; 1086 struct internal_exec *execp; 1087{ 1088 file_ptr pos = adata (abfd).exec_bytes_size; 1089 bfd_vma vma = 0; 1090 int pad; 1091 1092 /* Text. */ 1093 obj_textsec (abfd)->filepos = pos; 1094 if (!obj_textsec (abfd)->user_set_vma) 1095 obj_textsec (abfd)->vma = vma; 1096 else 1097 vma = obj_textsec (abfd)->vma; 1098 pos += obj_textsec (abfd)->size; 1099 vma += obj_textsec (abfd)->size; 1100 1101 /* Data. */ 1102 obj_datasec (abfd)->filepos = pos; 1103 if (!obj_datasec (abfd)->user_set_vma) 1104 obj_datasec (abfd)->vma = BFD_ALIGN (vma, adata (abfd).segment_size); 1105 vma = obj_datasec (abfd)->vma; 1106 1107 /* Since BSS follows data immediately, see if it needs alignment. */ 1108 vma += obj_datasec (abfd)->size; 1109 pad = align_power (vma, obj_bsssec (abfd)->alignment_power) - vma; 1110 obj_datasec (abfd)->size += pad; 1111 pos += obj_datasec (abfd)->size; 1112 1113 /* BSS. */ 1114 if (!obj_bsssec (abfd)->user_set_vma) 1115 obj_bsssec (abfd)->vma = vma; 1116 else 1117 vma = obj_bsssec (abfd)->vma; 1118 1119 /* Fix up exec header. */ 1120 execp->a_text = obj_textsec (abfd)->size; 1121 execp->a_data = obj_datasec (abfd)->size; 1122 execp->a_bss = obj_bsssec (abfd)->size; 1123 N_SET_MAGIC (*execp, NMAGIC); 1124} 1125 1126bfd_boolean 1127NAME(aout,adjust_sizes_and_vmas) (abfd, text_size, text_end) 1128 bfd *abfd; 1129 bfd_size_type *text_size; 1130 file_ptr *text_end ATTRIBUTE_UNUSED; 1131{ 1132 struct internal_exec *execp = exec_hdr (abfd); 1133 1134 if (! NAME(aout,make_sections) (abfd)) 1135 return FALSE; 1136 1137 if (adata (abfd).magic != undecided_magic) 1138 return TRUE; 1139 1140 obj_textsec (abfd)->size = 1141 align_power (obj_textsec (abfd)->size, 1142 obj_textsec (abfd)->alignment_power); 1143 1144 *text_size = obj_textsec (abfd)->size; 1145 /* Rule (heuristic) for when to pad to a new page. Note that there 1146 are (at least) two ways demand-paged (ZMAGIC) files have been 1147 handled. Most Berkeley-based systems start the text segment at 1148 (TARGET_PAGE_SIZE). However, newer versions of SUNOS start the text 1149 segment right after the exec header; the latter is counted in the 1150 text segment size, and is paged in by the kernel with the rest of 1151 the text. */ 1152 1153 /* This perhaps isn't the right way to do this, but made it simpler for me 1154 to understand enough to implement it. Better would probably be to go 1155 right from BFD flags to alignment/positioning characteristics. But the 1156 old code was sloppy enough about handling the flags, and had enough 1157 other magic, that it was a little hard for me to understand. I think 1158 I understand it better now, but I haven't time to do the cleanup this 1159 minute. */ 1160 1161 if (abfd->flags & D_PAGED) 1162 /* Whether or not WP_TEXT is set -- let D_PAGED override. */ 1163 adata (abfd).magic = z_magic; 1164 else if (abfd->flags & WP_TEXT) 1165 adata (abfd).magic = n_magic; 1166 else 1167 adata (abfd).magic = o_magic; 1168 1169#ifdef BFD_AOUT_DEBUG /* requires gcc2 */ 1170#if __GNUC__ >= 2 1171 fprintf (stderr, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n", 1172 ({ char *str; 1173 switch (adata (abfd).magic) 1174 { 1175 case n_magic: str = "NMAGIC"; break; 1176 case o_magic: str = "OMAGIC"; break; 1177 case z_magic: str = "ZMAGIC"; break; 1178 default: abort (); 1179 } 1180 str; 1181 }), 1182 obj_textsec (abfd)->vma, obj_textsec (abfd)->size, 1183 obj_textsec (abfd)->alignment_power, 1184 obj_datasec (abfd)->vma, obj_datasec (abfd)->size, 1185 obj_datasec (abfd)->alignment_power, 1186 obj_bsssec (abfd)->vma, obj_bsssec (abfd)->size, 1187 obj_bsssec (abfd)->alignment_power); 1188#endif 1189#endif 1190 1191 switch (adata (abfd).magic) 1192 { 1193 case o_magic: 1194 adjust_o_magic (abfd, execp); 1195 break; 1196 case z_magic: 1197 adjust_z_magic (abfd, execp); 1198 break; 1199 case n_magic: 1200 adjust_n_magic (abfd, execp); 1201 break; 1202 default: 1203 abort (); 1204 } 1205 1206#ifdef BFD_AOUT_DEBUG 1207 fprintf (stderr, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n", 1208 obj_textsec (abfd)->vma, obj_textsec (abfd)->size, 1209 obj_textsec (abfd)->filepos, 1210 obj_datasec (abfd)->vma, obj_datasec (abfd)->size, 1211 obj_datasec (abfd)->filepos, 1212 obj_bsssec (abfd)->vma, obj_bsssec (abfd)->size); 1213#endif 1214 1215 return TRUE; 1216} 1217 1218/* 1219FUNCTION 1220 aout_@var{size}_new_section_hook 1221 1222SYNOPSIS 1223 bfd_boolean aout_@var{size}_new_section_hook, 1224 (bfd *abfd, 1225 asection *newsect)); 1226 1227DESCRIPTION 1228 Called by the BFD in response to a @code{bfd_make_section} 1229 request. 1230*/ 1231bfd_boolean 1232NAME(aout,new_section_hook) (abfd, newsect) 1233 bfd *abfd; 1234 asection *newsect; 1235{ 1236 /* Align to double at least. */ 1237 newsect->alignment_power = bfd_get_arch_info (abfd)->section_align_power; 1238 1239 if (bfd_get_format (abfd) == bfd_object) 1240 { 1241 if (obj_textsec (abfd) == NULL && !strcmp (newsect->name, ".text")) 1242 { 1243 obj_textsec (abfd)= newsect; 1244 newsect->target_index = N_TEXT; 1245 return TRUE; 1246 } 1247 1248 if (obj_datasec (abfd) == NULL && !strcmp (newsect->name, ".data")) 1249 { 1250 obj_datasec (abfd) = newsect; 1251 newsect->target_index = N_DATA; 1252 return TRUE; 1253 } 1254 1255 if (obj_bsssec (abfd) == NULL && !strcmp (newsect->name, ".bss")) 1256 { 1257 obj_bsssec (abfd) = newsect; 1258 newsect->target_index = N_BSS; 1259 return TRUE; 1260 } 1261 } 1262 1263 /* We allow more than three sections internally. */ 1264 return TRUE; 1265} 1266 1267bfd_boolean 1268NAME(aout,set_section_contents) (abfd, section, location, offset, count) 1269 bfd *abfd; 1270 sec_ptr section; 1271 const PTR location; 1272 file_ptr offset; 1273 bfd_size_type count; 1274{ 1275 file_ptr text_end; 1276 bfd_size_type text_size; 1277 1278 if (! abfd->output_has_begun) 1279 { 1280 if (! NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end)) 1281 return FALSE; 1282 } 1283 1284 if (section == obj_bsssec (abfd)) 1285 { 1286 bfd_set_error (bfd_error_no_contents); 1287 return FALSE; 1288 } 1289 1290 if (section != obj_textsec (abfd) 1291 && section != obj_datasec (abfd)) 1292 { 1293 if (aout_section_merge_with_text_p (abfd, section)) 1294 section->filepos = obj_textsec (abfd)->filepos + 1295 (section->vma - obj_textsec (abfd)->vma); 1296 else 1297 { 1298 (*_bfd_error_handler) 1299 (_("%s: can not represent section `%s' in a.out object file format"), 1300 bfd_get_filename (abfd), bfd_get_section_name (abfd, section)); 1301 bfd_set_error (bfd_error_nonrepresentable_section); 1302 return FALSE; 1303 } 1304 } 1305 1306 if (count != 0) 1307 { 1308 if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0 1309 || bfd_bwrite (location, count, abfd) != count) 1310 return FALSE; 1311 } 1312 1313 return TRUE; 1314} 1315 1316/* Read the external symbols from an a.out file. */ 1317 1318static bfd_boolean 1319aout_get_external_symbols (abfd) 1320 bfd *abfd; 1321{ 1322 if (obj_aout_external_syms (abfd) == (struct external_nlist *) NULL) 1323 { 1324 bfd_size_type count; 1325 struct external_nlist *syms; 1326 bfd_size_type amt; 1327 1328 count = exec_hdr (abfd)->a_syms / EXTERNAL_NLIST_SIZE; 1329 1330#ifdef USE_MMAP 1331 if (! bfd_get_file_window (abfd, obj_sym_filepos (abfd), 1332 exec_hdr (abfd)->a_syms, 1333 &obj_aout_sym_window (abfd), TRUE)) 1334 return FALSE; 1335 syms = (struct external_nlist *) obj_aout_sym_window (abfd).data; 1336#else 1337 /* We allocate using malloc to make the values easy to free 1338 later on. If we put them on the objalloc it might not be 1339 possible to free them. */ 1340 syms = ((struct external_nlist *) 1341 bfd_malloc (count * EXTERNAL_NLIST_SIZE)); 1342 if (syms == (struct external_nlist *) NULL && count != 0) 1343 return FALSE; 1344 1345 amt = exec_hdr (abfd)->a_syms; 1346 if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0 1347 || bfd_bread (syms, amt, abfd) != amt) 1348 { 1349 free (syms); 1350 return FALSE; 1351 } 1352#endif 1353 1354 obj_aout_external_syms (abfd) = syms; 1355 obj_aout_external_sym_count (abfd) = count; 1356 } 1357 1358 if (obj_aout_external_strings (abfd) == NULL 1359 && exec_hdr (abfd)->a_syms != 0) 1360 { 1361 unsigned char string_chars[BYTES_IN_WORD]; 1362 bfd_size_type stringsize; 1363 char *strings; 1364 bfd_size_type amt = BYTES_IN_WORD; 1365 1366 /* Get the size of the strings. */ 1367 if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0 1368 || bfd_bread ((PTR) string_chars, amt, abfd) != amt) 1369 return FALSE; 1370 stringsize = GET_WORD (abfd, string_chars); 1371 1372#ifdef USE_MMAP 1373 if (! bfd_get_file_window (abfd, obj_str_filepos (abfd), stringsize, 1374 &obj_aout_string_window (abfd), TRUE)) 1375 return FALSE; 1376 strings = (char *) obj_aout_string_window (abfd).data; 1377#else 1378 strings = (char *) bfd_malloc (stringsize + 1); 1379 if (strings == NULL) 1380 return FALSE; 1381 1382 /* Skip space for the string count in the buffer for convenience 1383 when using indexes. */ 1384 amt = stringsize - BYTES_IN_WORD; 1385 if (bfd_bread (strings + BYTES_IN_WORD, amt, abfd) != amt) 1386 { 1387 free (strings); 1388 return FALSE; 1389 } 1390#endif 1391 1392 /* Ensure that a zero index yields an empty string. */ 1393 strings[0] = '\0'; 1394 1395 strings[stringsize - 1] = 0; 1396 1397 obj_aout_external_strings (abfd) = strings; 1398 obj_aout_external_string_size (abfd) = stringsize; 1399 } 1400 1401 return TRUE; 1402} 1403 1404/* Translate an a.out symbol into a BFD symbol. The desc, other, type 1405 and symbol->value fields of CACHE_PTR will be set from the a.out 1406 nlist structure. This function is responsible for setting 1407 symbol->flags and symbol->section, and adjusting symbol->value. */ 1408 1409static bfd_boolean 1410translate_from_native_sym_flags (abfd, cache_ptr) 1411 bfd *abfd; 1412 aout_symbol_type *cache_ptr; 1413{ 1414 flagword visible; 1415 1416 if ((cache_ptr->type & N_STAB) != 0 1417 || cache_ptr->type == N_FN) 1418 { 1419 asection *sec; 1420 1421 /* This is a debugging symbol. */ 1422 cache_ptr->symbol.flags = BSF_DEBUGGING; 1423 1424 /* Work out the symbol section. */ 1425 switch (cache_ptr->type & N_TYPE) 1426 { 1427 case N_TEXT: 1428 case N_FN: 1429 sec = obj_textsec (abfd); 1430 break; 1431 case N_DATA: 1432 sec = obj_datasec (abfd); 1433 break; 1434 case N_BSS: 1435 sec = obj_bsssec (abfd); 1436 break; 1437 default: 1438 case N_ABS: 1439 sec = bfd_abs_section_ptr; 1440 break; 1441 } 1442 1443 cache_ptr->symbol.section = sec; 1444 cache_ptr->symbol.value -= sec->vma; 1445 1446 return TRUE; 1447 } 1448 1449 /* Get the default visibility. This does not apply to all types, so 1450 we just hold it in a local variable to use if wanted. */ 1451 if ((cache_ptr->type & N_EXT) == 0) 1452 visible = BSF_LOCAL; 1453 else 1454 visible = BSF_GLOBAL; 1455 1456 switch (cache_ptr->type) 1457 { 1458 default: 1459 case N_ABS: case N_ABS | N_EXT: 1460 cache_ptr->symbol.section = bfd_abs_section_ptr; 1461 cache_ptr->symbol.flags = visible; 1462 break; 1463 1464 case N_UNDF | N_EXT: 1465 if (cache_ptr->symbol.value != 0) 1466 { 1467 /* This is a common symbol. */ 1468 cache_ptr->symbol.flags = BSF_GLOBAL; 1469 cache_ptr->symbol.section = bfd_com_section_ptr; 1470 } 1471 else 1472 { 1473 cache_ptr->symbol.flags = 0; 1474 cache_ptr->symbol.section = bfd_und_section_ptr; 1475 } 1476 break; 1477 1478 case N_TEXT: case N_TEXT | N_EXT: 1479 cache_ptr->symbol.section = obj_textsec (abfd); 1480 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; 1481 cache_ptr->symbol.flags = visible; 1482 break; 1483 1484 /* N_SETV symbols used to represent set vectors placed in the 1485 data section. They are no longer generated. Theoretically, 1486 it was possible to extract the entries and combine them with 1487 new ones, although I don't know if that was ever actually 1488 done. Unless that feature is restored, treat them as data 1489 symbols. */ 1490 case N_SETV: case N_SETV | N_EXT: 1491 case N_DATA: case N_DATA | N_EXT: 1492 cache_ptr->symbol.section = obj_datasec (abfd); 1493 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; 1494 cache_ptr->symbol.flags = visible; 1495 break; 1496 1497 case N_BSS: case N_BSS | N_EXT: 1498 cache_ptr->symbol.section = obj_bsssec (abfd); 1499 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; 1500 cache_ptr->symbol.flags = visible; 1501 break; 1502 1503 case N_SETA: case N_SETA | N_EXT: 1504 case N_SETT: case N_SETT | N_EXT: 1505 case N_SETD: case N_SETD | N_EXT: 1506 case N_SETB: case N_SETB | N_EXT: 1507 { 1508 /* This code is no longer needed. It used to be used to make 1509 the linker handle set symbols, but they are now handled in 1510 the add_symbols routine instead. */ 1511#if 0 1512 asection *section; 1513 arelent_chain *reloc; 1514 asection *into_section; 1515 bfd_size_type amt; 1516 1517 /* This is a set symbol. The name of the symbol is the name 1518 of the set (e.g., __CTOR_LIST__). The value of the symbol 1519 is the value to add to the set. We create a section with 1520 the same name as the symbol, and add a reloc to insert the 1521 appropriate value into the section. 1522 1523 This action is actually obsolete; it used to make the 1524 linker do the right thing, but the linker no longer uses 1525 this function. */ 1526 1527 section = bfd_get_section_by_name (abfd, cache_ptr->symbol.name); 1528 if (section == NULL) 1529 { 1530 char *copy; 1531 1532 amt = strlen (cache_ptr->symbol.name) + 1; 1533 copy = bfd_alloc (abfd, amt); 1534 if (copy == NULL) 1535 return FALSE; 1536 1537 strcpy (copy, cache_ptr->symbol.name); 1538 section = bfd_make_section (abfd, copy); 1539 if (section == NULL) 1540 return FALSE; 1541 } 1542 1543 amt = sizeof (arelent_chain); 1544 reloc = (arelent_chain *) bfd_alloc (abfd, amt); 1545 if (reloc == NULL) 1546 return FALSE; 1547 1548 /* Build a relocation entry for the constructor. */ 1549 switch (cache_ptr->type & N_TYPE) 1550 { 1551 case N_SETA: 1552 into_section = bfd_abs_section_ptr; 1553 cache_ptr->type = N_ABS; 1554 break; 1555 case N_SETT: 1556 into_section = obj_textsec (abfd); 1557 cache_ptr->type = N_TEXT; 1558 break; 1559 case N_SETD: 1560 into_section = obj_datasec (abfd); 1561 cache_ptr->type = N_DATA; 1562 break; 1563 case N_SETB: 1564 into_section = obj_bsssec (abfd); 1565 cache_ptr->type = N_BSS; 1566 break; 1567 } 1568 1569 /* Build a relocation pointing into the constructor section 1570 pointing at the symbol in the set vector specified. */ 1571 reloc->relent.addend = cache_ptr->symbol.value; 1572 cache_ptr->symbol.section = into_section; 1573 reloc->relent.sym_ptr_ptr = into_section->symbol_ptr_ptr; 1574 1575 /* We modify the symbol to belong to a section depending upon 1576 the name of the symbol, and add to the size of the section 1577 to contain a pointer to the symbol. Build a reloc entry to 1578 relocate to this symbol attached to this section. */ 1579 section->flags = SEC_CONSTRUCTOR | SEC_RELOC; 1580 1581 section->reloc_count++; 1582 section->alignment_power = 2; 1583 1584 reloc->next = section->constructor_chain; 1585 section->constructor_chain = reloc; 1586 reloc->relent.address = section->size; 1587 section->size += BYTES_IN_WORD; 1588 1589 reloc->relent.howto = CTOR_TABLE_RELOC_HOWTO (abfd); 1590 1591#endif /* 0 */ 1592 1593 switch (cache_ptr->type & N_TYPE) 1594 { 1595 case N_SETA: 1596 cache_ptr->symbol.section = bfd_abs_section_ptr; 1597 break; 1598 case N_SETT: 1599 cache_ptr->symbol.section = obj_textsec (abfd); 1600 break; 1601 case N_SETD: 1602 cache_ptr->symbol.section = obj_datasec (abfd); 1603 break; 1604 case N_SETB: 1605 cache_ptr->symbol.section = obj_bsssec (abfd); 1606 break; 1607 } 1608 1609 cache_ptr->symbol.flags |= BSF_CONSTRUCTOR; 1610 } 1611 break; 1612 1613 case N_WARNING: 1614 /* This symbol is the text of a warning message. The next 1615 symbol is the symbol to associate the warning with. If a 1616 reference is made to that symbol, a warning is issued. */ 1617 cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_WARNING; 1618 cache_ptr->symbol.section = bfd_abs_section_ptr; 1619 break; 1620 1621 case N_INDR: case N_INDR | N_EXT: 1622 /* An indirect symbol. This consists of two symbols in a row. 1623 The first symbol is the name of the indirection. The second 1624 symbol is the name of the target. A reference to the first 1625 symbol becomes a reference to the second. */ 1626 cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_INDIRECT | visible; 1627 cache_ptr->symbol.section = bfd_ind_section_ptr; 1628 break; 1629 1630 case N_WEAKU: 1631 cache_ptr->symbol.section = bfd_und_section_ptr; 1632 cache_ptr->symbol.flags = BSF_WEAK; 1633 break; 1634 1635 case N_WEAKA: 1636 cache_ptr->symbol.section = bfd_abs_section_ptr; 1637 cache_ptr->symbol.flags = BSF_WEAK; 1638 break; 1639 1640 case N_WEAKT: 1641 cache_ptr->symbol.section = obj_textsec (abfd); 1642 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; 1643 cache_ptr->symbol.flags = BSF_WEAK; 1644 break; 1645 1646 case N_WEAKD: 1647 cache_ptr->symbol.section = obj_datasec (abfd); 1648 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; 1649 cache_ptr->symbol.flags = BSF_WEAK; 1650 break; 1651 1652 case N_WEAKB: 1653 cache_ptr->symbol.section = obj_bsssec (abfd); 1654 cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; 1655 cache_ptr->symbol.flags = BSF_WEAK; 1656 break; 1657 } 1658 1659 return TRUE; 1660} 1661 1662/* Set the fields of SYM_POINTER according to CACHE_PTR. */ 1663 1664static bfd_boolean 1665translate_to_native_sym_flags (abfd, cache_ptr, sym_pointer) 1666 bfd *abfd; 1667 asymbol *cache_ptr; 1668 struct external_nlist *sym_pointer; 1669{ 1670 bfd_vma value = cache_ptr->value; 1671 asection *sec; 1672 bfd_vma off; 1673 1674 /* Mask out any existing type bits in case copying from one section 1675 to another. */ 1676 sym_pointer->e_type[0] &= ~N_TYPE; 1677 1678 sec = bfd_get_section (cache_ptr); 1679 off = 0; 1680 1681 if (sec == NULL) 1682 { 1683 /* This case occurs, e.g., for the *DEBUG* section of a COFF 1684 file. */ 1685 (*_bfd_error_handler) 1686 (_("%s: can not represent section for symbol `%s' in a.out object file format"), 1687 bfd_get_filename (abfd), 1688 cache_ptr->name != NULL ? cache_ptr->name : _("*unknown*")); 1689 bfd_set_error (bfd_error_nonrepresentable_section); 1690 return FALSE; 1691 } 1692 1693 if (sec->output_section != NULL) 1694 { 1695 off = sec->output_offset; 1696 sec = sec->output_section; 1697 } 1698 1699 if (bfd_is_abs_section (sec)) 1700 sym_pointer->e_type[0] |= N_ABS; 1701 else if (sec == obj_textsec (abfd)) 1702 sym_pointer->e_type[0] |= N_TEXT; 1703 else if (sec == obj_datasec (abfd)) 1704 sym_pointer->e_type[0] |= N_DATA; 1705 else if (sec == obj_bsssec (abfd)) 1706 sym_pointer->e_type[0] |= N_BSS; 1707 else if (bfd_is_und_section (sec)) 1708 sym_pointer->e_type[0] = N_UNDF | N_EXT; 1709 else if (bfd_is_ind_section (sec)) 1710 sym_pointer->e_type[0] = N_INDR; 1711 else if (bfd_is_com_section (sec)) 1712 sym_pointer->e_type[0] = N_UNDF | N_EXT; 1713 else 1714 { 1715 if (aout_section_merge_with_text_p (abfd, sec)) 1716 sym_pointer->e_type[0] |= N_TEXT; 1717 else 1718 { 1719 (*_bfd_error_handler) 1720 (_("%s: can not represent section `%s' in a.out object file format"), 1721 bfd_get_filename (abfd), bfd_get_section_name (abfd, sec)); 1722 bfd_set_error (bfd_error_nonrepresentable_section); 1723 return FALSE; 1724 } 1725 } 1726 1727 /* Turn the symbol from section relative to absolute again. */ 1728 value += sec->vma + off; 1729 1730 if ((cache_ptr->flags & BSF_WARNING) != 0) 1731 sym_pointer->e_type[0] = N_WARNING; 1732 1733 if ((cache_ptr->flags & BSF_DEBUGGING) != 0) 1734 sym_pointer->e_type[0] = ((aout_symbol_type *) cache_ptr)->type; 1735 else if ((cache_ptr->flags & BSF_GLOBAL) != 0) 1736 sym_pointer->e_type[0] |= N_EXT; 1737 else if ((cache_ptr->flags & BSF_LOCAL) != 0) 1738 sym_pointer->e_type[0] &= ~N_EXT; 1739 1740 if ((cache_ptr->flags & BSF_CONSTRUCTOR) != 0) 1741 { 1742 int type = ((aout_symbol_type *) cache_ptr)->type; 1743 1744 switch (type) 1745 { 1746 case N_ABS: type = N_SETA; break; 1747 case N_TEXT: type = N_SETT; break; 1748 case N_DATA: type = N_SETD; break; 1749 case N_BSS: type = N_SETB; break; 1750 } 1751 sym_pointer->e_type[0] = type; 1752 } 1753 1754 if ((cache_ptr->flags & BSF_WEAK) != 0) 1755 { 1756 int type; 1757 1758 switch (sym_pointer->e_type[0] & N_TYPE) 1759 { 1760 default: 1761 case N_ABS: type = N_WEAKA; break; 1762 case N_TEXT: type = N_WEAKT; break; 1763 case N_DATA: type = N_WEAKD; break; 1764 case N_BSS: type = N_WEAKB; break; 1765 case N_UNDF: type = N_WEAKU; break; 1766 } 1767 sym_pointer->e_type[0] = type; 1768 } 1769 1770 PUT_WORD (abfd, value, sym_pointer->e_value); 1771 1772 return TRUE; 1773} 1774 1775/* Native-level interface to symbols. */ 1776 1777asymbol * 1778NAME(aout,make_empty_symbol) (abfd) 1779 bfd *abfd; 1780{ 1781 bfd_size_type amt = sizeof (aout_symbol_type); 1782 aout_symbol_type *new = (aout_symbol_type *) bfd_zalloc (abfd, amt); 1783 if (!new) 1784 return NULL; 1785 new->symbol.the_bfd = abfd; 1786 1787 return &new->symbol; 1788} 1789 1790/* Translate a set of internal symbols into external symbols. */ 1791 1792bfd_boolean 1793NAME(aout,translate_symbol_table) (abfd, in, ext, count, str, strsize, dynamic) 1794 bfd *abfd; 1795 aout_symbol_type *in; 1796 struct external_nlist *ext; 1797 bfd_size_type count; 1798 char *str; 1799 bfd_size_type strsize; 1800 bfd_boolean dynamic; 1801{ 1802 struct external_nlist *ext_end; 1803 1804 ext_end = ext + count; 1805 for (; ext < ext_end; ext++, in++) 1806 { 1807 bfd_vma x; 1808 1809 x = GET_WORD (abfd, ext->e_strx); 1810 in->symbol.the_bfd = abfd; 1811 1812 /* For the normal symbols, the zero index points at the number 1813 of bytes in the string table but is to be interpreted as the 1814 null string. For the dynamic symbols, the number of bytes in 1815 the string table is stored in the __DYNAMIC structure and the 1816 zero index points at an actual string. */ 1817 if (x == 0 && ! dynamic) 1818 in->symbol.name = ""; 1819 else if (x < strsize) 1820 in->symbol.name = str + x; 1821 else 1822 return FALSE; 1823 1824 in->symbol.value = GET_SWORD (abfd, ext->e_value); 1825 in->desc = H_GET_16 (abfd, ext->e_desc); 1826 in->other = H_GET_8 (abfd, ext->e_other); 1827 in->type = H_GET_8 (abfd, ext->e_type); 1828 in->symbol.udata.p = NULL; 1829 1830 if (! translate_from_native_sym_flags (abfd, in)) 1831 return FALSE; 1832 1833 if (dynamic) 1834 in->symbol.flags |= BSF_DYNAMIC; 1835 } 1836 1837 return TRUE; 1838} 1839 1840/* We read the symbols into a buffer, which is discarded when this 1841 function exits. We read the strings into a buffer large enough to 1842 hold them all plus all the cached symbol entries. */ 1843 1844bfd_boolean 1845NAME(aout,slurp_symbol_table) (abfd) 1846 bfd *abfd; 1847{ 1848 struct external_nlist *old_external_syms; 1849 aout_symbol_type *cached; 1850 bfd_size_type cached_size; 1851 1852 /* If there's no work to be done, don't do any. */ 1853 if (obj_aout_symbols (abfd) != (aout_symbol_type *) NULL) 1854 return TRUE; 1855 1856 old_external_syms = obj_aout_external_syms (abfd); 1857 1858 if (! aout_get_external_symbols (abfd)) 1859 return FALSE; 1860 1861 cached_size = obj_aout_external_sym_count (abfd); 1862 cached_size *= sizeof (aout_symbol_type); 1863 cached = (aout_symbol_type *) bfd_zmalloc (cached_size); 1864 if (cached == NULL && cached_size != 0) 1865 return FALSE; 1866 1867 /* Convert from external symbol information to internal. */ 1868 if (! (NAME(aout,translate_symbol_table) 1869 (abfd, cached, 1870 obj_aout_external_syms (abfd), 1871 obj_aout_external_sym_count (abfd), 1872 obj_aout_external_strings (abfd), 1873 obj_aout_external_string_size (abfd), 1874 FALSE))) 1875 { 1876 free (cached); 1877 return FALSE; 1878 } 1879 1880 bfd_get_symcount (abfd) = obj_aout_external_sym_count (abfd); 1881 1882 obj_aout_symbols (abfd) = cached; 1883 1884 /* It is very likely that anybody who calls this function will not 1885 want the external symbol information, so if it was allocated 1886 because of our call to aout_get_external_symbols, we free it up 1887 right away to save space. */ 1888 if (old_external_syms == (struct external_nlist *) NULL 1889 && obj_aout_external_syms (abfd) != (struct external_nlist *) NULL) 1890 { 1891#ifdef USE_MMAP 1892 bfd_free_window (&obj_aout_sym_window (abfd)); 1893#else 1894 free (obj_aout_external_syms (abfd)); 1895#endif 1896 obj_aout_external_syms (abfd) = NULL; 1897 } 1898 1899 return TRUE; 1900} 1901 1902/* We use a hash table when writing out symbols so that we only write 1903 out a particular string once. This helps particularly when the 1904 linker writes out stabs debugging entries, because each different 1905 contributing object file tends to have many duplicate stabs 1906 strings. 1907 1908 This hash table code breaks dbx on SunOS 4.1.3, so we don't do it 1909 if BFD_TRADITIONAL_FORMAT is set. */ 1910 1911static bfd_size_type add_to_stringtab 1912 PARAMS ((bfd *, struct bfd_strtab_hash *, const char *, bfd_boolean)); 1913static bfd_boolean emit_stringtab 1914 PARAMS ((bfd *, struct bfd_strtab_hash *)); 1915 1916/* Get the index of a string in a strtab, adding it if it is not 1917 already present. */ 1918 1919static INLINE bfd_size_type 1920add_to_stringtab (abfd, tab, str, copy) 1921 bfd *abfd; 1922 struct bfd_strtab_hash *tab; 1923 const char *str; 1924 bfd_boolean copy; 1925{ 1926 bfd_boolean hash; 1927 bfd_size_type index; 1928 1929 /* An index of 0 always means the empty string. */ 1930 if (str == 0 || *str == '\0') 1931 return 0; 1932 1933 /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx 1934 doesn't understand a hashed string table. */ 1935 hash = TRUE; 1936 if ((abfd->flags & BFD_TRADITIONAL_FORMAT) != 0) 1937 hash = FALSE; 1938 1939 index = _bfd_stringtab_add (tab, str, hash, copy); 1940 1941 if (index != (bfd_size_type) -1) 1942 { 1943 /* Add BYTES_IN_WORD to the return value to account for the 1944 space taken up by the string table size. */ 1945 index += BYTES_IN_WORD; 1946 } 1947 1948 return index; 1949} 1950 1951/* Write out a strtab. ABFD is already at the right location in the 1952 file. */ 1953 1954static bfd_boolean 1955emit_stringtab (abfd, tab) 1956 register bfd *abfd; 1957 struct bfd_strtab_hash *tab; 1958{ 1959 bfd_byte buffer[BYTES_IN_WORD]; 1960 bfd_size_type amt = BYTES_IN_WORD; 1961 1962 /* The string table starts with the size. */ 1963 PUT_WORD (abfd, _bfd_stringtab_size (tab) + BYTES_IN_WORD, buffer); 1964 if (bfd_bwrite ((PTR) buffer, amt, abfd) != amt) 1965 return FALSE; 1966 1967 return _bfd_stringtab_emit (abfd, tab); 1968} 1969 1970bfd_boolean 1971NAME(aout,write_syms) (abfd) 1972 bfd *abfd; 1973{ 1974 unsigned int count ; 1975 asymbol **generic = bfd_get_outsymbols (abfd); 1976 struct bfd_strtab_hash *strtab; 1977 1978 strtab = _bfd_stringtab_init (); 1979 if (strtab == NULL) 1980 return FALSE; 1981 1982 for (count = 0; count < bfd_get_symcount (abfd); count++) 1983 { 1984 asymbol *g = generic[count]; 1985 bfd_size_type indx; 1986 struct external_nlist nsp; 1987 bfd_size_type amt; 1988 1989 indx = add_to_stringtab (abfd, strtab, g->name, FALSE); 1990 if (indx == (bfd_size_type) -1) 1991 goto error_return; 1992 PUT_WORD (abfd, indx, (bfd_byte *) nsp.e_strx); 1993 1994 if (bfd_asymbol_flavour (g) == abfd->xvec->flavour) 1995 { 1996 H_PUT_16 (abfd, aout_symbol (g)->desc, nsp.e_desc); 1997 H_PUT_8 (abfd, aout_symbol (g)->other, nsp.e_other); 1998 H_PUT_8 (abfd, aout_symbol (g)->type, nsp.e_type); 1999 } 2000 else 2001 { 2002 H_PUT_16 (abfd, 0, nsp.e_desc); 2003 H_PUT_8 (abfd, 0, nsp.e_other); 2004 H_PUT_8 (abfd, 0, nsp.e_type); 2005 } 2006 2007 if (! translate_to_native_sym_flags (abfd, g, &nsp)) 2008 goto error_return; 2009 2010 amt = EXTERNAL_NLIST_SIZE; 2011 if (bfd_bwrite ((PTR) &nsp, amt, abfd) != amt) 2012 goto error_return; 2013 2014 /* NB: `KEEPIT' currently overlays `udata.p', so set this only 2015 here, at the end. */ 2016 g->KEEPIT = count; 2017 } 2018 2019 if (! emit_stringtab (abfd, strtab)) 2020 goto error_return; 2021 2022 _bfd_stringtab_free (strtab); 2023 2024 return TRUE; 2025 2026error_return: 2027 _bfd_stringtab_free (strtab); 2028 return FALSE; 2029} 2030 2031long 2032NAME(aout,canonicalize_symtab) (abfd, location) 2033 bfd *abfd; 2034 asymbol **location; 2035{ 2036 unsigned int counter = 0; 2037 aout_symbol_type *symbase; 2038 2039 if (!NAME(aout,slurp_symbol_table) (abfd)) 2040 return -1; 2041 2042 for (symbase = obj_aout_symbols (abfd); 2043 counter++ < bfd_get_symcount (abfd); 2044 ) 2045 *(location++) = (asymbol *) (symbase++); 2046 *location++ =0; 2047 return bfd_get_symcount (abfd); 2048} 2049 2050/* Standard reloc stuff. */ 2051/* Output standard relocation information to a file in target byte order. */ 2052 2053extern void NAME(aout,swap_std_reloc_out) 2054 PARAMS ((bfd *, arelent *, struct reloc_std_external *)); 2055 2056void 2057NAME(aout,swap_std_reloc_out) (abfd, g, natptr) 2058 bfd *abfd; 2059 arelent *g; 2060 struct reloc_std_external *natptr; 2061{ 2062 int r_index; 2063 asymbol *sym = *(g->sym_ptr_ptr); 2064 int r_extern; 2065 unsigned int r_length; 2066 int r_pcrel; 2067 int r_baserel, r_jmptable, r_relative; 2068 asection *output_section = sym->section->output_section; 2069 2070 PUT_WORD (abfd, g->address, natptr->r_address); 2071 2072 r_length = g->howto->size ; /* Size as a power of two. */ 2073 r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */ 2074 /* XXX This relies on relocs coming from a.out files. */ 2075 r_baserel = (g->howto->type & 8) != 0; 2076 r_jmptable = (g->howto->type & 16) != 0; 2077 r_relative = (g->howto->type & 32) != 0; 2078 2079#if 0 2080 /* For a standard reloc, the addend is in the object file. */ 2081 r_addend = g->addend + (*(g->sym_ptr_ptr))->section->output_section->vma; 2082#endif 2083 2084 /* Name was clobbered by aout_write_syms to be symbol index. */ 2085 2086 /* If this relocation is relative to a symbol then set the 2087 r_index to the symbols index, and the r_extern bit. 2088 2089 Absolute symbols can come in in two ways, either as an offset 2090 from the abs section, or as a symbol which has an abs value. 2091 check for that here. */ 2092 2093 if (bfd_is_com_section (output_section) 2094 || bfd_is_abs_section (output_section) 2095 || bfd_is_und_section (output_section)) 2096 { 2097 if (bfd_abs_section_ptr->symbol == sym) 2098 { 2099 /* Whoops, looked like an abs symbol, but is 2100 really an offset from the abs section. */ 2101 r_index = N_ABS; 2102 r_extern = 0; 2103 } 2104 else 2105 { 2106 /* Fill in symbol. */ 2107 r_extern = 1; 2108 r_index = (*(g->sym_ptr_ptr))->KEEPIT; 2109 } 2110 } 2111 else 2112 { 2113 /* Just an ordinary section. */ 2114 r_extern = 0; 2115 r_index = output_section->target_index; 2116 } 2117 2118 /* Now the fun stuff. */ 2119 if (bfd_header_big_endian (abfd)) 2120 { 2121 natptr->r_index[0] = r_index >> 16; 2122 natptr->r_index[1] = r_index >> 8; 2123 natptr->r_index[2] = r_index; 2124 natptr->r_type[0] = ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0) 2125 | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0) 2126 | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0) 2127 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0) 2128 | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0) 2129 | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG)); 2130 } 2131 else 2132 { 2133 natptr->r_index[2] = r_index >> 16; 2134 natptr->r_index[1] = r_index >> 8; 2135 natptr->r_index[0] = r_index; 2136 natptr->r_type[0] = ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0) 2137 | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0) 2138 | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0) 2139 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0) 2140 | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0) 2141 | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE)); 2142 } 2143} 2144 2145/* Extended stuff. */ 2146/* Output extended relocation information to a file in target byte order. */ 2147 2148extern void NAME(aout,swap_ext_reloc_out) 2149 PARAMS ((bfd *, arelent *, struct reloc_ext_external *)); 2150 2151void 2152NAME(aout,swap_ext_reloc_out) (abfd, g, natptr) 2153 bfd *abfd; 2154 arelent *g; 2155 register struct reloc_ext_external *natptr; 2156{ 2157 int r_index; 2158 int r_extern; 2159 unsigned int r_type; 2160 bfd_vma r_addend; 2161 asymbol *sym = *(g->sym_ptr_ptr); 2162 asection *output_section = sym->section->output_section; 2163 2164 PUT_WORD (abfd, g->address, natptr->r_address); 2165 2166 r_type = (unsigned int) g->howto->type; 2167 2168 r_addend = g->addend; 2169 if ((sym->flags & BSF_SECTION_SYM) != 0) 2170 r_addend += (*(g->sym_ptr_ptr))->section->output_section->vma; 2171 2172 /* If this relocation is relative to a symbol then set the 2173 r_index to the symbols index, and the r_extern bit. 2174 2175 Absolute symbols can come in in two ways, either as an offset 2176 from the abs section, or as a symbol which has an abs value. 2177 check for that here. */ 2178 if (bfd_is_abs_section (bfd_get_section (sym))) 2179 { 2180 r_extern = 0; 2181 r_index = N_ABS; 2182 } 2183 else if ((sym->flags & BSF_SECTION_SYM) == 0) 2184 { 2185 if (bfd_is_und_section (bfd_get_section (sym)) 2186 || (sym->flags & BSF_GLOBAL) != 0) 2187 r_extern = 1; 2188 else 2189 r_extern = 0; 2190 r_index = (*(g->sym_ptr_ptr))->KEEPIT; 2191 } 2192 else 2193 { 2194 /* Just an ordinary section. */ 2195 r_extern = 0; 2196 r_index = output_section->target_index; 2197 } 2198 2199 /* Now the fun stuff. */ 2200 if (bfd_header_big_endian (abfd)) 2201 { 2202 natptr->r_index[0] = r_index >> 16; 2203 natptr->r_index[1] = r_index >> 8; 2204 natptr->r_index[2] = r_index; 2205 natptr->r_type[0] = ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0) 2206 | (r_type << RELOC_EXT_BITS_TYPE_SH_BIG)); 2207 } 2208 else 2209 { 2210 natptr->r_index[2] = r_index >> 16; 2211 natptr->r_index[1] = r_index >> 8; 2212 natptr->r_index[0] = r_index; 2213 natptr->r_type[0] = ((r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0) 2214 | (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE)); 2215 } 2216 2217 PUT_WORD (abfd, r_addend, natptr->r_addend); 2218} 2219 2220/* BFD deals internally with all things based from the section they're 2221 in. so, something in 10 bytes into a text section with a base of 2222 50 would have a symbol (.text+10) and know .text vma was 50. 2223 2224 Aout keeps all it's symbols based from zero, so the symbol would 2225 contain 60. This macro subs the base of each section from the value 2226 to give the true offset from the section. */ 2227 2228#define MOVE_ADDRESS(ad) \ 2229 if (r_extern) \ 2230 { \ 2231 /* Undefined symbol. */ \ 2232 cache_ptr->sym_ptr_ptr = symbols + r_index; \ 2233 cache_ptr->addend = ad; \ 2234 } \ 2235 else \ 2236 { \ 2237 /* Defined, section relative. Replace symbol with pointer to \ 2238 symbol which points to section. */ \ 2239 switch (r_index) \ 2240 { \ 2241 case N_TEXT: \ 2242 case N_TEXT | N_EXT: \ 2243 cache_ptr->sym_ptr_ptr = obj_textsec (abfd)->symbol_ptr_ptr; \ 2244 cache_ptr->addend = ad - su->textsec->vma; \ 2245 break; \ 2246 case N_DATA: \ 2247 case N_DATA | N_EXT: \ 2248 cache_ptr->sym_ptr_ptr = obj_datasec (abfd)->symbol_ptr_ptr; \ 2249 cache_ptr->addend = ad - su->datasec->vma; \ 2250 break; \ 2251 case N_BSS: \ 2252 case N_BSS | N_EXT: \ 2253 cache_ptr->sym_ptr_ptr = obj_bsssec (abfd)->symbol_ptr_ptr; \ 2254 cache_ptr->addend = ad - su->bsssec->vma; \ 2255 break; \ 2256 default: \ 2257 case N_ABS: \ 2258 case N_ABS | N_EXT: \ 2259 cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \ 2260 cache_ptr->addend = ad; \ 2261 break; \ 2262 } \ 2263 } 2264 2265void 2266NAME(aout,swap_ext_reloc_in) (abfd, bytes, cache_ptr, symbols, symcount) 2267 bfd *abfd; 2268 struct reloc_ext_external *bytes; 2269 arelent *cache_ptr; 2270 asymbol **symbols; 2271 bfd_size_type symcount; 2272{ 2273 unsigned int r_index; 2274 int r_extern; 2275 unsigned int r_type; 2276 struct aoutdata *su = &(abfd->tdata.aout_data->a); 2277 2278 cache_ptr->address = (GET_SWORD (abfd, bytes->r_address)); 2279 2280 /* Now the fun stuff. */ 2281 if (bfd_header_big_endian (abfd)) 2282 { 2283 r_index = (((unsigned int) bytes->r_index[0] << 16) 2284 | ((unsigned int) bytes->r_index[1] << 8) 2285 | bytes->r_index[2]); 2286 r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG)); 2287 r_type = ((bytes->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) 2288 >> RELOC_EXT_BITS_TYPE_SH_BIG); 2289 } 2290 else 2291 { 2292 r_index = (((unsigned int) bytes->r_index[2] << 16) 2293 | ((unsigned int) bytes->r_index[1] << 8) 2294 | bytes->r_index[0]); 2295 r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE)); 2296 r_type = ((bytes->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) 2297 >> RELOC_EXT_BITS_TYPE_SH_LITTLE); 2298 } 2299 2300 cache_ptr->howto = howto_table_ext + r_type; 2301 2302 /* Base relative relocs are always against the symbol table, 2303 regardless of the setting of r_extern. r_extern just reflects 2304 whether the symbol the reloc is against is local or global. */ 2305 if (r_type == (unsigned int) RELOC_BASE10 2306 || r_type == (unsigned int) RELOC_BASE13 2307 || r_type == (unsigned int) RELOC_BASE22) 2308 r_extern = 1; 2309 2310 if (r_extern && r_index > symcount) 2311 { 2312 /* We could arrange to return an error, but it might be useful 2313 to see the file even if it is bad. */ 2314 r_extern = 0; 2315 r_index = N_ABS; 2316 } 2317 2318 MOVE_ADDRESS (GET_SWORD (abfd, bytes->r_addend)); 2319} 2320 2321void 2322NAME(aout,swap_std_reloc_in) (abfd, bytes, cache_ptr, symbols, symcount) 2323 bfd *abfd; 2324 struct reloc_std_external *bytes; 2325 arelent *cache_ptr; 2326 asymbol **symbols; 2327 bfd_size_type symcount; 2328{ 2329 unsigned int r_index; 2330 int r_extern; 2331 unsigned int r_length; 2332 int r_pcrel; 2333 int r_baserel, r_jmptable, r_relative; 2334 struct aoutdata *su = &(abfd->tdata.aout_data->a); 2335 unsigned int howto_idx; 2336 2337 cache_ptr->address = H_GET_32 (abfd, bytes->r_address); 2338 2339 /* Now the fun stuff. */ 2340 if (bfd_header_big_endian (abfd)) 2341 { 2342 r_index = (((unsigned int) bytes->r_index[0] << 16) 2343 | ((unsigned int) bytes->r_index[1] << 8) 2344 | bytes->r_index[2]); 2345 r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_BIG)); 2346 r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_BIG)); 2347 r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_BIG)); 2348 r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG)); 2349 r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG)); 2350 r_length = ((bytes->r_type[0] & RELOC_STD_BITS_LENGTH_BIG) 2351 >> RELOC_STD_BITS_LENGTH_SH_BIG); 2352 } 2353 else 2354 { 2355 r_index = (((unsigned int) bytes->r_index[2] << 16) 2356 | ((unsigned int) bytes->r_index[1] << 8) 2357 | bytes->r_index[0]); 2358 r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE)); 2359 r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); 2360 r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE)); 2361 r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE)); 2362 r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE)); 2363 r_length = ((bytes->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE) 2364 >> RELOC_STD_BITS_LENGTH_SH_LITTLE); 2365 } 2366 2367 howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel 2368 + 16 * r_jmptable + 32 * r_relative); 2369 BFD_ASSERT (howto_idx < TABLE_SIZE (howto_table_std)); 2370 cache_ptr->howto = howto_table_std + howto_idx; 2371 BFD_ASSERT (cache_ptr->howto->type != (unsigned int) -1); 2372 2373 /* Base relative relocs are always against the symbol table, 2374 regardless of the setting of r_extern. r_extern just reflects 2375 whether the symbol the reloc is against is local or global. */ 2376 if (r_baserel) 2377 r_extern = 1; 2378 2379 if (r_extern && r_index > symcount) 2380 { 2381 /* We could arrange to return an error, but it might be useful 2382 to see the file even if it is bad. */ 2383 r_extern = 0; 2384 r_index = N_ABS; 2385 } 2386 2387 MOVE_ADDRESS (0); 2388} 2389 2390/* Read and swap the relocs for a section. */ 2391 2392bfd_boolean 2393NAME(aout,slurp_reloc_table) (abfd, asect, symbols) 2394 bfd *abfd; 2395 sec_ptr asect; 2396 asymbol **symbols; 2397{ 2398 bfd_size_type count; 2399 bfd_size_type reloc_size; 2400 PTR relocs; 2401 arelent *reloc_cache; 2402 size_t each_size; 2403 unsigned int counter = 0; 2404 arelent *cache_ptr; 2405 bfd_size_type amt; 2406 2407 if (asect->relocation) 2408 return TRUE; 2409 2410 if (asect->flags & SEC_CONSTRUCTOR) 2411 return TRUE; 2412 2413 if (asect == obj_datasec (abfd)) 2414 reloc_size = exec_hdr (abfd)->a_drsize; 2415 else if (asect == obj_textsec (abfd)) 2416 reloc_size = exec_hdr (abfd)->a_trsize; 2417 else if (asect == obj_bsssec (abfd)) 2418 reloc_size = 0; 2419 else 2420 { 2421 bfd_set_error (bfd_error_invalid_operation); 2422 return FALSE; 2423 } 2424 2425 if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0) 2426 return FALSE; 2427 2428 each_size = obj_reloc_entry_size (abfd); 2429 2430 count = reloc_size / each_size; 2431 2432 amt = count * sizeof (arelent); 2433 reloc_cache = (arelent *) bfd_zmalloc (amt); 2434 if (reloc_cache == NULL && count != 0) 2435 return FALSE; 2436 2437 relocs = bfd_malloc (reloc_size); 2438 if (relocs == NULL && reloc_size != 0) 2439 { 2440 free (reloc_cache); 2441 return FALSE; 2442 } 2443 2444 if (bfd_bread (relocs, reloc_size, abfd) != reloc_size) 2445 { 2446 free (relocs); 2447 free (reloc_cache); 2448 return FALSE; 2449 } 2450 2451 cache_ptr = reloc_cache; 2452 if (each_size == RELOC_EXT_SIZE) 2453 { 2454 struct reloc_ext_external *rptr = (struct reloc_ext_external *) relocs; 2455 2456 for (; counter < count; counter++, rptr++, cache_ptr++) 2457 MY_swap_ext_reloc_in (abfd, rptr, cache_ptr, symbols, 2458 (bfd_size_type) bfd_get_symcount (abfd)); 2459 } 2460 else 2461 { 2462 struct reloc_std_external *rptr = (struct reloc_std_external *) relocs; 2463 2464 for (; counter < count; counter++, rptr++, cache_ptr++) 2465 MY_swap_std_reloc_in (abfd, rptr, cache_ptr, symbols, 2466 (bfd_size_type) bfd_get_symcount (abfd)); 2467 } 2468 2469 free (relocs); 2470 2471 asect->relocation = reloc_cache; 2472 asect->reloc_count = cache_ptr - reloc_cache; 2473 2474 return TRUE; 2475} 2476 2477/* Write out a relocation section into an object file. */ 2478 2479bfd_boolean 2480NAME(aout,squirt_out_relocs) (abfd, section) 2481 bfd *abfd; 2482 asection *section; 2483{ 2484 arelent **generic; 2485 unsigned char *native, *natptr; 2486 size_t each_size; 2487 2488 unsigned int count = section->reloc_count; 2489 bfd_size_type natsize; 2490 2491 if (count == 0 || section->orelocation == NULL) 2492 return TRUE; 2493 2494 each_size = obj_reloc_entry_size (abfd); 2495 natsize = (bfd_size_type) each_size * count; 2496 native = (unsigned char *) bfd_zalloc (abfd, natsize); 2497 if (!native) 2498 return FALSE; 2499 2500 generic = section->orelocation; 2501 2502 if (each_size == RELOC_EXT_SIZE) 2503 { 2504 for (natptr = native; 2505 count != 0; 2506 --count, natptr += each_size, ++generic) 2507 MY_swap_ext_reloc_out (abfd, *generic, 2508 (struct reloc_ext_external *) natptr); 2509 } 2510 else 2511 { 2512 for (natptr = native; 2513 count != 0; 2514 --count, natptr += each_size, ++generic) 2515 MY_swap_std_reloc_out (abfd, *generic, 2516 (struct reloc_std_external *) natptr); 2517 } 2518 2519 if (bfd_bwrite ((PTR) native, natsize, abfd) != natsize) 2520 { 2521 bfd_release (abfd, native); 2522 return FALSE; 2523 } 2524 bfd_release (abfd, native); 2525 2526 return TRUE; 2527} 2528 2529/* This is stupid. This function should be a boolean predicate. */ 2530 2531long 2532NAME(aout,canonicalize_reloc) (abfd, section, relptr, symbols) 2533 bfd *abfd; 2534 sec_ptr section; 2535 arelent **relptr; 2536 asymbol **symbols; 2537{ 2538 arelent *tblptr = section->relocation; 2539 unsigned int count; 2540 2541 if (section == obj_bsssec (abfd)) 2542 { 2543 *relptr = NULL; 2544 return 0; 2545 } 2546 2547 if (!(tblptr || NAME(aout,slurp_reloc_table) (abfd, section, symbols))) 2548 return -1; 2549 2550 if (section->flags & SEC_CONSTRUCTOR) 2551 { 2552 arelent_chain *chain = section->constructor_chain; 2553 for (count = 0; count < section->reloc_count; count ++) 2554 { 2555 *relptr ++ = &chain->relent; 2556 chain = chain->next; 2557 } 2558 } 2559 else 2560 { 2561 tblptr = section->relocation; 2562 2563 for (count = 0; count++ < section->reloc_count; ) 2564 { 2565 *relptr++ = tblptr++; 2566 } 2567 } 2568 *relptr = 0; 2569 2570 return section->reloc_count; 2571} 2572 2573long 2574NAME(aout,get_reloc_upper_bound) (abfd, asect) 2575 bfd *abfd; 2576 sec_ptr asect; 2577{ 2578 if (bfd_get_format (abfd) != bfd_object) 2579 { 2580 bfd_set_error (bfd_error_invalid_operation); 2581 return -1; 2582 } 2583 2584 if (asect->flags & SEC_CONSTRUCTOR) 2585 return (sizeof (arelent *) * (asect->reloc_count+1)); 2586 2587 if (asect == obj_datasec (abfd)) 2588 return (sizeof (arelent *) 2589 * ((exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd)) 2590 + 1)); 2591 2592 if (asect == obj_textsec (abfd)) 2593 return (sizeof (arelent *) 2594 * ((exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd)) 2595 + 1)); 2596 2597 if (asect == obj_bsssec (abfd)) 2598 return sizeof (arelent *); 2599 2600 if (asect == obj_bsssec (abfd)) 2601 return 0; 2602 2603 bfd_set_error (bfd_error_invalid_operation); 2604 return -1; 2605} 2606 2607long 2608NAME(aout,get_symtab_upper_bound) (abfd) 2609 bfd *abfd; 2610{ 2611 if (!NAME(aout,slurp_symbol_table) (abfd)) 2612 return -1; 2613 2614 return (bfd_get_symcount (abfd)+1) * (sizeof (aout_symbol_type *)); 2615} 2616 2617alent * 2618NAME(aout,get_lineno) (ignore_abfd, ignore_symbol) 2619 bfd *ignore_abfd ATTRIBUTE_UNUSED; 2620 asymbol *ignore_symbol ATTRIBUTE_UNUSED; 2621{ 2622 return (alent *)NULL; 2623} 2624 2625void 2626NAME(aout,get_symbol_info) (ignore_abfd, symbol, ret) 2627 bfd *ignore_abfd ATTRIBUTE_UNUSED; 2628 asymbol *symbol; 2629 symbol_info *ret; 2630{ 2631 bfd_symbol_info (symbol, ret); 2632 2633 if (ret->type == '?') 2634 { 2635 int type_code = aout_symbol (symbol)->type & 0xff; 2636 const char *stab_name = bfd_get_stab_name (type_code); 2637 static char buf[10]; 2638 2639 if (stab_name == NULL) 2640 { 2641 sprintf (buf, "(%d)", type_code); 2642 stab_name = buf; 2643 } 2644 ret->type = '-'; 2645 ret->stab_type = type_code; 2646 ret->stab_other = (unsigned) (aout_symbol (symbol)->other & 0xff); 2647 ret->stab_desc = (unsigned) (aout_symbol (symbol)->desc & 0xffff); 2648 ret->stab_name = stab_name; 2649 } 2650} 2651 2652void 2653NAME(aout,print_symbol) (abfd, afile, symbol, how) 2654 bfd *abfd; 2655 PTR afile; 2656 asymbol *symbol; 2657 bfd_print_symbol_type how; 2658{ 2659 FILE *file = (FILE *)afile; 2660 2661 switch (how) 2662 { 2663 case bfd_print_symbol_name: 2664 if (symbol->name) 2665 fprintf (file,"%s", symbol->name); 2666 break; 2667 case bfd_print_symbol_more: 2668 fprintf (file,"%4x %2x %2x", 2669 (unsigned) (aout_symbol (symbol)->desc & 0xffff), 2670 (unsigned) (aout_symbol (symbol)->other & 0xff), 2671 (unsigned) (aout_symbol (symbol)->type)); 2672 break; 2673 case bfd_print_symbol_all: 2674 { 2675 const char *section_name = symbol->section->name; 2676 2677 bfd_print_symbol_vandf (abfd, (PTR)file, symbol); 2678 2679 fprintf (file," %-5s %04x %02x %02x", 2680 section_name, 2681 (unsigned) (aout_symbol (symbol)->desc & 0xffff), 2682 (unsigned) (aout_symbol (symbol)->other & 0xff), 2683 (unsigned) (aout_symbol (symbol)->type & 0xff)); 2684 if (symbol->name) 2685 fprintf (file," %s", symbol->name); 2686 } 2687 break; 2688 } 2689} 2690 2691/* If we don't have to allocate more than 1MB to hold the generic 2692 symbols, we use the generic minisymbol methord: it's faster, since 2693 it only translates the symbols once, not multiple times. */ 2694#define MINISYM_THRESHOLD (1000000 / sizeof (asymbol)) 2695 2696/* Read minisymbols. For minisymbols, we use the unmodified a.out 2697 symbols. The minisymbol_to_symbol function translates these into 2698 BFD asymbol structures. */ 2699 2700long 2701NAME(aout,read_minisymbols) (abfd, dynamic, minisymsp, sizep) 2702 bfd *abfd; 2703 bfd_boolean dynamic; 2704 PTR *minisymsp; 2705 unsigned int *sizep; 2706{ 2707 if (dynamic) 2708 { 2709 /* We could handle the dynamic symbols here as well, but it's 2710 easier to hand them off. */ 2711 return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep); 2712 } 2713 2714 if (! aout_get_external_symbols (abfd)) 2715 return -1; 2716 2717 if (obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD) 2718 return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep); 2719 2720 *minisymsp = (PTR) obj_aout_external_syms (abfd); 2721 2722 /* By passing the external symbols back from this routine, we are 2723 giving up control over the memory block. Clear 2724 obj_aout_external_syms, so that we do not try to free it 2725 ourselves. */ 2726 obj_aout_external_syms (abfd) = NULL; 2727 2728 *sizep = EXTERNAL_NLIST_SIZE; 2729 return obj_aout_external_sym_count (abfd); 2730} 2731 2732/* Convert a minisymbol to a BFD asymbol. A minisymbol is just an 2733 unmodified a.out symbol. The SYM argument is a structure returned 2734 by bfd_make_empty_symbol, which we fill in here. */ 2735 2736asymbol * 2737NAME(aout,minisymbol_to_symbol) (abfd, dynamic, minisym, sym) 2738 bfd *abfd; 2739 bfd_boolean dynamic; 2740 const PTR minisym; 2741 asymbol *sym; 2742{ 2743 if (dynamic 2744 || obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD) 2745 return _bfd_generic_minisymbol_to_symbol (abfd, dynamic, minisym, sym); 2746 2747 memset (sym, 0, sizeof (aout_symbol_type)); 2748 2749 /* We call translate_symbol_table to translate a single symbol. */ 2750 if (! (NAME(aout,translate_symbol_table) 2751 (abfd, 2752 (aout_symbol_type *) sym, 2753 (struct external_nlist *) minisym, 2754 (bfd_size_type) 1, 2755 obj_aout_external_strings (abfd), 2756 obj_aout_external_string_size (abfd), 2757 FALSE))) 2758 return NULL; 2759 2760 return sym; 2761} 2762 2763/* Provided a BFD, a section and an offset into the section, calculate 2764 and return the name of the source file and the line nearest to the 2765 wanted location. */ 2766 2767bfd_boolean 2768NAME(aout,find_nearest_line) 2769 (abfd, section, symbols, offset, filename_ptr, functionname_ptr, line_ptr) 2770 bfd *abfd; 2771 asection *section; 2772 asymbol **symbols; 2773 bfd_vma offset; 2774 const char **filename_ptr; 2775 const char **functionname_ptr; 2776 unsigned int *line_ptr; 2777{ 2778 /* Run down the file looking for the filename, function and linenumber. */ 2779 asymbol **p; 2780 const char *directory_name = NULL; 2781 const char *main_file_name = NULL; 2782 const char *current_file_name = NULL; 2783 const char *line_file_name = NULL; /* Value of current_file_name at line number. */ 2784 const char *line_directory_name = NULL; /* Value of directory_name at line number. */ 2785 bfd_vma low_line_vma = 0; 2786 bfd_vma low_func_vma = 0; 2787 asymbol *func = 0; 2788 bfd_size_type filelen, funclen; 2789 char *buf; 2790 2791 *filename_ptr = abfd->filename; 2792 *functionname_ptr = 0; 2793 *line_ptr = 0; 2794 2795 if (symbols != (asymbol **)NULL) 2796 { 2797 for (p = symbols; *p; p++) 2798 { 2799 aout_symbol_type *q = (aout_symbol_type *) (*p); 2800 next: 2801 switch (q->type) 2802 { 2803 case N_TEXT: 2804 /* If this looks like a file name symbol, and it comes after 2805 the line number we have found so far, but before the 2806 offset, then we have probably not found the right line 2807 number. */ 2808 if (q->symbol.value <= offset 2809 && ((q->symbol.value > low_line_vma 2810 && (line_file_name != NULL 2811 || *line_ptr != 0)) 2812 || (q->symbol.value > low_func_vma 2813 && func != NULL))) 2814 { 2815 const char *symname; 2816 2817 symname = q->symbol.name; 2818 if (strcmp (symname + strlen (symname) - 2, ".o") == 0) 2819 { 2820 if (q->symbol.value > low_line_vma) 2821 { 2822 *line_ptr = 0; 2823 line_file_name = NULL; 2824 } 2825 if (q->symbol.value > low_func_vma) 2826 func = NULL; 2827 } 2828 } 2829 break; 2830 2831 case N_SO: 2832 /* If this symbol is less than the offset, but greater than 2833 the line number we have found so far, then we have not 2834 found the right line number. */ 2835 if (q->symbol.value <= offset) 2836 { 2837 if (q->symbol.value > low_line_vma) 2838 { 2839 *line_ptr = 0; 2840 line_file_name = NULL; 2841 } 2842 if (q->symbol.value > low_func_vma) 2843 func = NULL; 2844 } 2845 2846 main_file_name = current_file_name = q->symbol.name; 2847 /* Look ahead to next symbol to check if that too is an N_SO. */ 2848 p++; 2849 if (*p == NULL) 2850 break; 2851 q = (aout_symbol_type *) (*p); 2852 if (q->type != (int)N_SO) 2853 goto next; 2854 2855 /* Found a second N_SO First is directory; second is filename. */ 2856 directory_name = current_file_name; 2857 main_file_name = current_file_name = q->symbol.name; 2858 if (obj_textsec (abfd) != section) 2859 goto done; 2860 break; 2861 case N_SOL: 2862 current_file_name = q->symbol.name; 2863 break; 2864 2865 case N_SLINE: 2866 2867 case N_DSLINE: 2868 case N_BSLINE: 2869 /* We'll keep this if it resolves nearer than the one we have 2870 already. */ 2871 if (q->symbol.value >= low_line_vma 2872 && q->symbol.value <= offset) 2873 { 2874 *line_ptr = q->desc; 2875 low_line_vma = q->symbol.value; 2876 line_file_name = current_file_name; 2877 line_directory_name = directory_name; 2878 } 2879 break; 2880 case N_FUN: 2881 { 2882 /* We'll keep this if it is nearer than the one we have already. */ 2883 if (q->symbol.value >= low_func_vma && 2884 q->symbol.value <= offset) 2885 { 2886 low_func_vma = q->symbol.value; 2887 func = (asymbol *)q; 2888 } 2889 else if (q->symbol.value > offset) 2890 goto done; 2891 } 2892 break; 2893 } 2894 } 2895 } 2896 2897 done: 2898 if (*line_ptr != 0) 2899 { 2900 main_file_name = line_file_name; 2901 directory_name = line_directory_name; 2902 } 2903 2904 if (main_file_name == NULL 2905 || IS_ABSOLUTE_PATH (main_file_name) 2906 || directory_name == NULL) 2907 filelen = 0; 2908 else 2909 filelen = strlen (directory_name) + strlen (main_file_name); 2910 2911 if (func == NULL) 2912 funclen = 0; 2913 else 2914 funclen = strlen (bfd_asymbol_name (func)); 2915 2916 if (adata (abfd).line_buf != NULL) 2917 free (adata (abfd).line_buf); 2918 2919 if (filelen + funclen == 0) 2920 adata (abfd).line_buf = buf = NULL; 2921 else 2922 { 2923 buf = (char *) bfd_malloc (filelen + funclen + 3); 2924 adata (abfd).line_buf = buf; 2925 if (buf == NULL) 2926 return FALSE; 2927 } 2928 2929 if (main_file_name != NULL) 2930 { 2931 if (IS_ABSOLUTE_PATH (main_file_name) || directory_name == NULL) 2932 *filename_ptr = main_file_name; 2933 else 2934 { 2935 sprintf (buf, "%s%s", directory_name, main_file_name); 2936 *filename_ptr = buf; 2937 buf += filelen + 1; 2938 } 2939 } 2940 2941 if (func) 2942 { 2943 const char *function = func->name; 2944 char *colon; 2945 2946 /* The caller expects a symbol name. We actually have a 2947 function name, without the leading underscore. Put the 2948 underscore back in, so that the caller gets a symbol name. */ 2949 if (bfd_get_symbol_leading_char (abfd) == '\0') 2950 strcpy (buf, function); 2951 else 2952 { 2953 buf[0] = bfd_get_symbol_leading_char (abfd); 2954 strcpy (buf + 1, function); 2955 } 2956 /* Have to remove : stuff. */ 2957 colon = strchr (buf, ':'); 2958 if (colon != NULL) 2959 *colon = '\0'; 2960 *functionname_ptr = buf; 2961 } 2962 2963 return TRUE; 2964} 2965 2966int 2967NAME(aout,sizeof_headers) (abfd, execable) 2968 bfd *abfd; 2969 bfd_boolean execable ATTRIBUTE_UNUSED; 2970{ 2971 return adata (abfd).exec_bytes_size; 2972} 2973 2974/* Free all information we have cached for this BFD. We can always 2975 read it again later if we need it. */ 2976 2977bfd_boolean 2978NAME(aout,bfd_free_cached_info) (abfd) 2979 bfd *abfd; 2980{ 2981 asection *o; 2982 2983 if (bfd_get_format (abfd) != bfd_object 2984 || abfd->tdata.aout_data == NULL) 2985 return TRUE; 2986 2987#define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; } 2988 BFCI_FREE (obj_aout_symbols (abfd)); 2989#ifdef USE_MMAP 2990 obj_aout_external_syms (abfd) = 0; 2991 bfd_free_window (&obj_aout_sym_window (abfd)); 2992 bfd_free_window (&obj_aout_string_window (abfd)); 2993 obj_aout_external_strings (abfd) = 0; 2994#else 2995 BFCI_FREE (obj_aout_external_syms (abfd)); 2996 BFCI_FREE (obj_aout_external_strings (abfd)); 2997#endif 2998 for (o = abfd->sections; o != (asection *) NULL; o = o->next) 2999 BFCI_FREE (o->relocation); 3000#undef BFCI_FREE 3001 3002 return TRUE; 3003} 3004 3005/* a.out link code. */ 3006 3007static bfd_boolean aout_link_add_object_symbols 3008 PARAMS ((bfd *, struct bfd_link_info *)); 3009static bfd_boolean aout_link_check_archive_element 3010 PARAMS ((bfd *, struct bfd_link_info *, bfd_boolean *)); 3011static bfd_boolean aout_link_free_symbols 3012 PARAMS ((bfd *)); 3013static bfd_boolean aout_link_check_ar_symbols 3014 PARAMS ((bfd *, struct bfd_link_info *, bfd_boolean *pneeded)); 3015static bfd_boolean aout_link_add_symbols 3016 PARAMS ((bfd *, struct bfd_link_info *)); 3017 3018/* Routine to create an entry in an a.out link hash table. */ 3019 3020struct bfd_hash_entry * 3021NAME(aout,link_hash_newfunc) (entry, table, string) 3022 struct bfd_hash_entry *entry; 3023 struct bfd_hash_table *table; 3024 const char *string; 3025{ 3026 struct aout_link_hash_entry *ret = (struct aout_link_hash_entry *) entry; 3027 3028 /* Allocate the structure if it has not already been allocated by a 3029 subclass. */ 3030 if (ret == (struct aout_link_hash_entry *) NULL) 3031 ret = ((struct aout_link_hash_entry *) 3032 bfd_hash_allocate (table, sizeof (struct aout_link_hash_entry))); 3033 if (ret == (struct aout_link_hash_entry *) NULL) 3034 return (struct bfd_hash_entry *) ret; 3035 3036 /* Call the allocation method of the superclass. */ 3037 ret = ((struct aout_link_hash_entry *) 3038 _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret, 3039 table, string)); 3040 if (ret) 3041 { 3042 /* Set local fields. */ 3043 ret->written = FALSE; 3044 ret->indx = -1; 3045 } 3046 3047 return (struct bfd_hash_entry *) ret; 3048} 3049 3050/* Initialize an a.out link hash table. */ 3051 3052bfd_boolean 3053NAME(aout,link_hash_table_init) (table, abfd, newfunc) 3054 struct aout_link_hash_table *table; 3055 bfd *abfd; 3056 struct bfd_hash_entry *(*newfunc) 3057 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, 3058 const char *)); 3059{ 3060 return _bfd_link_hash_table_init (&table->root, abfd, newfunc); 3061} 3062 3063/* Create an a.out link hash table. */ 3064 3065struct bfd_link_hash_table * 3066NAME(aout,link_hash_table_create) (abfd) 3067 bfd *abfd; 3068{ 3069 struct aout_link_hash_table *ret; 3070 bfd_size_type amt = sizeof (struct aout_link_hash_table); 3071 3072 ret = (struct aout_link_hash_table *) bfd_malloc (amt); 3073 if (ret == NULL) 3074 return (struct bfd_link_hash_table *) NULL; 3075 3076 if (! NAME(aout,link_hash_table_init) (ret, abfd, 3077 NAME(aout,link_hash_newfunc))) 3078 { 3079 free (ret); 3080 return (struct bfd_link_hash_table *) NULL; 3081 } 3082 return &ret->root; 3083} 3084 3085/* Given an a.out BFD, add symbols to the global hash table as 3086 appropriate. */ 3087 3088bfd_boolean 3089NAME(aout,link_add_symbols) (abfd, info) 3090 bfd *abfd; 3091 struct bfd_link_info *info; 3092{ 3093 switch (bfd_get_format (abfd)) 3094 { 3095 case bfd_object: 3096 return aout_link_add_object_symbols (abfd, info); 3097 case bfd_archive: 3098 return _bfd_generic_link_add_archive_symbols 3099 (abfd, info, aout_link_check_archive_element); 3100 default: 3101 bfd_set_error (bfd_error_wrong_format); 3102 return FALSE; 3103 } 3104} 3105 3106/* Add symbols from an a.out object file. */ 3107 3108static bfd_boolean 3109aout_link_add_object_symbols (abfd, info) 3110 bfd *abfd; 3111 struct bfd_link_info *info; 3112{ 3113 if (! aout_get_external_symbols (abfd)) 3114 return FALSE; 3115 if (! aout_link_add_symbols (abfd, info)) 3116 return FALSE; 3117 if (! info->keep_memory) 3118 { 3119 if (! aout_link_free_symbols (abfd)) 3120 return FALSE; 3121 } 3122 return TRUE; 3123} 3124 3125/* Check a single archive element to see if we need to include it in 3126 the link. *PNEEDED is set according to whether this element is 3127 needed in the link or not. This is called from 3128 _bfd_generic_link_add_archive_symbols. */ 3129 3130static bfd_boolean 3131aout_link_check_archive_element (abfd, info, pneeded) 3132 bfd *abfd; 3133 struct bfd_link_info *info; 3134 bfd_boolean *pneeded; 3135{ 3136 if (! aout_get_external_symbols (abfd)) 3137 return FALSE; 3138 3139 if (! aout_link_check_ar_symbols (abfd, info, pneeded)) 3140 return FALSE; 3141 3142 if (*pneeded) 3143 { 3144 if (! aout_link_add_symbols (abfd, info)) 3145 return FALSE; 3146 } 3147 3148 if (! info->keep_memory || ! *pneeded) 3149 { 3150 if (! aout_link_free_symbols (abfd)) 3151 return FALSE; 3152 } 3153 3154 return TRUE; 3155} 3156 3157/* Free up the internal symbols read from an a.out file. */ 3158 3159static bfd_boolean 3160aout_link_free_symbols (abfd) 3161 bfd *abfd; 3162{ 3163 if (obj_aout_external_syms (abfd) != (struct external_nlist *) NULL) 3164 { 3165#ifdef USE_MMAP 3166 bfd_free_window (&obj_aout_sym_window (abfd)); 3167#else 3168 free ((PTR) obj_aout_external_syms (abfd)); 3169#endif 3170 obj_aout_external_syms (abfd) = (struct external_nlist *) NULL; 3171 } 3172 if (obj_aout_external_strings (abfd) != (char *) NULL) 3173 { 3174#ifdef USE_MMAP 3175 bfd_free_window (&obj_aout_string_window (abfd)); 3176#else 3177 free ((PTR) obj_aout_external_strings (abfd)); 3178#endif 3179 obj_aout_external_strings (abfd) = (char *) NULL; 3180 } 3181 return TRUE; 3182} 3183 3184/* Look through the internal symbols to see if this object file should 3185 be included in the link. We should include this object file if it 3186 defines any symbols which are currently undefined. If this object 3187 file defines a common symbol, then we may adjust the size of the 3188 known symbol but we do not include the object file in the link 3189 (unless there is some other reason to include it). */ 3190 3191static bfd_boolean 3192aout_link_check_ar_symbols (abfd, info, pneeded) 3193 bfd *abfd; 3194 struct bfd_link_info *info; 3195 bfd_boolean *pneeded; 3196{ 3197 register struct external_nlist *p; 3198 struct external_nlist *pend; 3199 char *strings; 3200 3201 *pneeded = FALSE; 3202 3203 /* Look through all the symbols. */ 3204 p = obj_aout_external_syms (abfd); 3205 pend = p + obj_aout_external_sym_count (abfd); 3206 strings = obj_aout_external_strings (abfd); 3207 for (; p < pend; p++) 3208 { 3209 int type = H_GET_8 (abfd, p->e_type); 3210 const char *name; 3211 struct bfd_link_hash_entry *h; 3212 3213 /* Ignore symbols that are not externally visible. This is an 3214 optimization only, as we check the type more thoroughly 3215 below. */ 3216 if (((type & N_EXT) == 0 3217 || (type & N_STAB) != 0 3218 || type == N_FN) 3219 && type != N_WEAKA 3220 && type != N_WEAKT 3221 && type != N_WEAKD 3222 && type != N_WEAKB) 3223 { 3224 if (type == N_WARNING 3225 || type == N_INDR) 3226 ++p; 3227 continue; 3228 } 3229 3230 name = strings + GET_WORD (abfd, p->e_strx); 3231 h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE); 3232 3233 /* We are only interested in symbols that are currently 3234 undefined or common. */ 3235 if (h == (struct bfd_link_hash_entry *) NULL 3236 || (h->type != bfd_link_hash_undefined 3237 && h->type != bfd_link_hash_common)) 3238 { 3239 if (type == (N_INDR | N_EXT)) 3240 ++p; 3241 continue; 3242 } 3243 3244 if (type == (N_TEXT | N_EXT) 3245 || type == (N_DATA | N_EXT) 3246 || type == (N_BSS | N_EXT) 3247 || type == (N_ABS | N_EXT) 3248 || type == (N_INDR | N_EXT)) 3249 { 3250 /* This object file defines this symbol. We must link it 3251 in. This is true regardless of whether the current 3252 definition of the symbol is undefined or common. 3253 3254 If the current definition is common, we have a case in 3255 which we have already seen an object file including: 3256 int a; 3257 and this object file from the archive includes: 3258 int a = 5; 3259 In such a case, whether to include this object is target 3260 dependant for backward compatibility. 3261 3262 FIXME: The SunOS 4.1.3 linker will pull in the archive 3263 element if the symbol is defined in the .data section, 3264 but not if it is defined in the .text section. That 3265 seems a bit crazy to me, and it has not been implemented 3266 yet. However, it might be correct. */ 3267 if (h->type == bfd_link_hash_common) 3268 { 3269 int skip = 0; 3270 3271 switch (info->common_skip_ar_aymbols) 3272 { 3273 case bfd_link_common_skip_text: 3274 skip = (type == (N_TEXT | N_EXT)); 3275 break; 3276 case bfd_link_common_skip_data: 3277 skip = (type == (N_DATA | N_EXT)); 3278 break; 3279 default: 3280 case bfd_link_common_skip_all: 3281 skip = 1; 3282 break; 3283 } 3284 3285 if (skip) 3286 continue; 3287 } 3288 3289 if (! (*info->callbacks->add_archive_element) (info, abfd, name)) 3290 return FALSE; 3291 *pneeded = TRUE; 3292 return TRUE; 3293 } 3294 3295 if (type == (N_UNDF | N_EXT)) 3296 { 3297 bfd_vma value; 3298 3299 value = GET_WORD (abfd, p->e_value); 3300 if (value != 0) 3301 { 3302 /* This symbol is common in the object from the archive 3303 file. */ 3304 if (h->type == bfd_link_hash_undefined) 3305 { 3306 bfd *symbfd; 3307 unsigned int power; 3308 3309 symbfd = h->u.undef.abfd; 3310 if (symbfd == (bfd *) NULL) 3311 { 3312 /* This symbol was created as undefined from 3313 outside BFD. We assume that we should link 3314 in the object file. This is done for the -u 3315 option in the linker. */ 3316 if (! (*info->callbacks->add_archive_element) (info, 3317 abfd, 3318 name)) 3319 return FALSE; 3320 *pneeded = TRUE; 3321 return TRUE; 3322 } 3323 /* Turn the current link symbol into a common 3324 symbol. It is already on the undefs list. */ 3325 h->type = bfd_link_hash_common; 3326 h->u.c.p = ((struct bfd_link_hash_common_entry *) 3327 bfd_hash_allocate (&info->hash->table, 3328 sizeof (struct bfd_link_hash_common_entry))); 3329 if (h->u.c.p == NULL) 3330 return FALSE; 3331 3332 h->u.c.size = value; 3333 3334 /* FIXME: This isn't quite right. The maximum 3335 alignment of a common symbol should be set by the 3336 architecture of the output file, not of the input 3337 file. */ 3338 power = bfd_log2 (value); 3339 if (power > bfd_get_arch_info (abfd)->section_align_power) 3340 power = bfd_get_arch_info (abfd)->section_align_power; 3341 h->u.c.p->alignment_power = power; 3342 3343 h->u.c.p->section = bfd_make_section_old_way (symbfd, 3344 "COMMON"); 3345 } 3346 else 3347 { 3348 /* Adjust the size of the common symbol if 3349 necessary. */ 3350 if (value > h->u.c.size) 3351 h->u.c.size = value; 3352 } 3353 } 3354 } 3355 3356 if (type == N_WEAKA 3357 || type == N_WEAKT 3358 || type == N_WEAKD 3359 || type == N_WEAKB) 3360 { 3361 /* This symbol is weak but defined. We must pull it in if 3362 the current link symbol is undefined, but we don't want 3363 it if the current link symbol is common. */ 3364 if (h->type == bfd_link_hash_undefined) 3365 { 3366 if (! (*info->callbacks->add_archive_element) (info, abfd, name)) 3367 return FALSE; 3368 *pneeded = TRUE; 3369 return TRUE; 3370 } 3371 } 3372 } 3373 3374 /* We do not need this object file. */ 3375 return TRUE; 3376} 3377 3378/* Add all symbols from an object file to the hash table. */ 3379 3380static bfd_boolean 3381aout_link_add_symbols (abfd, info) 3382 bfd *abfd; 3383 struct bfd_link_info *info; 3384{ 3385 bfd_boolean (*add_one_symbol) 3386 PARAMS ((struct bfd_link_info *, bfd *, const char *, flagword, asection *, 3387 bfd_vma, const char *, bfd_boolean, bfd_boolean, 3388 struct bfd_link_hash_entry **)); 3389 struct external_nlist *syms; 3390 bfd_size_type sym_count; 3391 char *strings; 3392 bfd_boolean copy; 3393 struct aout_link_hash_entry **sym_hash; 3394 register struct external_nlist *p; 3395 struct external_nlist *pend; 3396 bfd_size_type amt; 3397 3398 syms = obj_aout_external_syms (abfd); 3399 sym_count = obj_aout_external_sym_count (abfd); 3400 strings = obj_aout_external_strings (abfd); 3401 if (info->keep_memory) 3402 copy = FALSE; 3403 else 3404 copy = TRUE; 3405 3406 if (aout_backend_info (abfd)->add_dynamic_symbols != NULL) 3407 { 3408 if (! ((*aout_backend_info (abfd)->add_dynamic_symbols) 3409 (abfd, info, &syms, &sym_count, &strings))) 3410 return FALSE; 3411 } 3412 3413 /* We keep a list of the linker hash table entries that correspond 3414 to particular symbols. We could just look them up in the hash 3415 table, but keeping the list is more efficient. Perhaps this 3416 should be conditional on info->keep_memory. */ 3417 amt = sym_count * sizeof (struct aout_link_hash_entry *); 3418 sym_hash = (struct aout_link_hash_entry **) bfd_alloc (abfd, amt); 3419 if (sym_hash == NULL && sym_count != 0) 3420 return FALSE; 3421 obj_aout_sym_hashes (abfd) = sym_hash; 3422 3423 add_one_symbol = aout_backend_info (abfd)->add_one_symbol; 3424 if (add_one_symbol == NULL) 3425 add_one_symbol = _bfd_generic_link_add_one_symbol; 3426 3427 p = syms; 3428 pend = p + sym_count; 3429 for (; p < pend; p++, sym_hash++) 3430 { 3431 int type; 3432 const char *name; 3433 bfd_vma value; 3434 asection *section; 3435 flagword flags; 3436 const char *string; 3437 3438 *sym_hash = NULL; 3439 3440 type = H_GET_8 (abfd, p->e_type); 3441 3442 /* Ignore debugging symbols. */ 3443 if ((type & N_STAB) != 0) 3444 continue; 3445 3446 name = strings + GET_WORD (abfd, p->e_strx); 3447 value = GET_WORD (abfd, p->e_value); 3448 flags = BSF_GLOBAL; 3449 string = NULL; 3450 switch (type) 3451 { 3452 default: 3453 abort (); 3454 3455 case N_UNDF: 3456 case N_ABS: 3457 case N_TEXT: 3458 case N_DATA: 3459 case N_BSS: 3460 case N_FN_SEQ: 3461 case N_COMM: 3462 case N_SETV: 3463 case N_FN: 3464 /* Ignore symbols that are not externally visible. */ 3465 continue; 3466 case N_INDR: 3467 /* Ignore local indirect symbol. */ 3468 ++p; 3469 ++sym_hash; 3470 continue; 3471 3472 case N_UNDF | N_EXT: 3473 if (value == 0) 3474 { 3475 section = bfd_und_section_ptr; 3476 flags = 0; 3477 } 3478 else 3479 section = bfd_com_section_ptr; 3480 break; 3481 case N_ABS | N_EXT: 3482 section = bfd_abs_section_ptr; 3483 break; 3484 case N_TEXT | N_EXT: 3485 section = obj_textsec (abfd); 3486 value -= bfd_get_section_vma (abfd, section); 3487 break; 3488 case N_DATA | N_EXT: 3489 case N_SETV | N_EXT: 3490 /* Treat N_SETV symbols as N_DATA symbol; see comment in 3491 translate_from_native_sym_flags. */ 3492 section = obj_datasec (abfd); 3493 value -= bfd_get_section_vma (abfd, section); 3494 break; 3495 case N_BSS | N_EXT: 3496 section = obj_bsssec (abfd); 3497 value -= bfd_get_section_vma (abfd, section); 3498 break; 3499 case N_INDR | N_EXT: 3500 /* An indirect symbol. The next symbol is the symbol 3501 which this one really is. */ 3502 BFD_ASSERT (p + 1 < pend); 3503 ++p; 3504 string = strings + GET_WORD (abfd, p->e_strx); 3505 section = bfd_ind_section_ptr; 3506 flags |= BSF_INDIRECT; 3507 break; 3508 case N_COMM | N_EXT: 3509 section = bfd_com_section_ptr; 3510 break; 3511 case N_SETA: case N_SETA | N_EXT: 3512 section = bfd_abs_section_ptr; 3513 flags |= BSF_CONSTRUCTOR; 3514 break; 3515 case N_SETT: case N_SETT | N_EXT: 3516 section = obj_textsec (abfd); 3517 flags |= BSF_CONSTRUCTOR; 3518 value -= bfd_get_section_vma (abfd, section); 3519 break; 3520 case N_SETD: case N_SETD | N_EXT: 3521 section = obj_datasec (abfd); 3522 flags |= BSF_CONSTRUCTOR; 3523 value -= bfd_get_section_vma (abfd, section); 3524 break; 3525 case N_SETB: case N_SETB | N_EXT: 3526 section = obj_bsssec (abfd); 3527 flags |= BSF_CONSTRUCTOR; 3528 value -= bfd_get_section_vma (abfd, section); 3529 break; 3530 case N_WARNING: 3531 /* A warning symbol. The next symbol is the one to warn 3532 about. */ 3533 BFD_ASSERT (p + 1 < pend); 3534 ++p; 3535 string = name; 3536 name = strings + GET_WORD (abfd, p->e_strx); 3537 section = bfd_und_section_ptr; 3538 flags |= BSF_WARNING; 3539 break; 3540 case N_WEAKU: 3541 section = bfd_und_section_ptr; 3542 flags = BSF_WEAK; 3543 break; 3544 case N_WEAKA: 3545 section = bfd_abs_section_ptr; 3546 flags = BSF_WEAK; 3547 break; 3548 case N_WEAKT: 3549 section = obj_textsec (abfd); 3550 value -= bfd_get_section_vma (abfd, section); 3551 flags = BSF_WEAK; 3552 break; 3553 case N_WEAKD: 3554 section = obj_datasec (abfd); 3555 value -= bfd_get_section_vma (abfd, section); 3556 flags = BSF_WEAK; 3557 break; 3558 case N_WEAKB: 3559 section = obj_bsssec (abfd); 3560 value -= bfd_get_section_vma (abfd, section); 3561 flags = BSF_WEAK; 3562 break; 3563 } 3564 3565 if (! ((*add_one_symbol) 3566 (info, abfd, name, flags, section, value, string, copy, FALSE, 3567 (struct bfd_link_hash_entry **) sym_hash))) 3568 return FALSE; 3569 3570 /* Restrict the maximum alignment of a common symbol based on 3571 the architecture, since a.out has no way to represent 3572 alignment requirements of a section in a .o file. FIXME: 3573 This isn't quite right: it should use the architecture of the 3574 output file, not the input files. */ 3575 if ((*sym_hash)->root.type == bfd_link_hash_common 3576 && ((*sym_hash)->root.u.c.p->alignment_power > 3577 bfd_get_arch_info (abfd)->section_align_power)) 3578 (*sym_hash)->root.u.c.p->alignment_power = 3579 bfd_get_arch_info (abfd)->section_align_power; 3580 3581 /* If this is a set symbol, and we are not building sets, then 3582 it is possible for the hash entry to not have been set. In 3583 such a case, treat the symbol as not globally defined. */ 3584 if ((*sym_hash)->root.type == bfd_link_hash_new) 3585 { 3586 BFD_ASSERT ((flags & BSF_CONSTRUCTOR) != 0); 3587 *sym_hash = NULL; 3588 } 3589 3590 if (type == (N_INDR | N_EXT) || type == N_WARNING) 3591 ++sym_hash; 3592 } 3593 3594 return TRUE; 3595} 3596 3597/* A hash table used for header files with N_BINCL entries. */ 3598 3599struct aout_link_includes_table 3600{ 3601 struct bfd_hash_table root; 3602}; 3603 3604/* A linked list of totals that we have found for a particular header 3605 file. */ 3606 3607struct aout_link_includes_totals 3608{ 3609 struct aout_link_includes_totals *next; 3610 bfd_vma total; 3611}; 3612 3613/* An entry in the header file hash table. */ 3614 3615struct aout_link_includes_entry 3616{ 3617 struct bfd_hash_entry root; 3618 /* List of totals we have found for this file. */ 3619 struct aout_link_includes_totals *totals; 3620}; 3621 3622/* Look up an entry in an the header file hash table. */ 3623 3624#define aout_link_includes_lookup(table, string, create, copy) \ 3625 ((struct aout_link_includes_entry *) \ 3626 bfd_hash_lookup (&(table)->root, (string), (create), (copy))) 3627 3628/* During the final link step we need to pass around a bunch of 3629 information, so we do it in an instance of this structure. */ 3630 3631struct aout_final_link_info 3632{ 3633 /* General link information. */ 3634 struct bfd_link_info *info; 3635 /* Output bfd. */ 3636 bfd *output_bfd; 3637 /* Reloc file positions. */ 3638 file_ptr treloff, dreloff; 3639 /* File position of symbols. */ 3640 file_ptr symoff; 3641 /* String table. */ 3642 struct bfd_strtab_hash *strtab; 3643 /* Header file hash table. */ 3644 struct aout_link_includes_table includes; 3645 /* A buffer large enough to hold the contents of any section. */ 3646 bfd_byte *contents; 3647 /* A buffer large enough to hold the relocs of any section. */ 3648 PTR relocs; 3649 /* A buffer large enough to hold the symbol map of any input BFD. */ 3650 int *symbol_map; 3651 /* A buffer large enough to hold output symbols of any input BFD. */ 3652 struct external_nlist *output_syms; 3653}; 3654 3655static struct bfd_hash_entry *aout_link_includes_newfunc 3656 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); 3657static bfd_boolean aout_link_input_bfd 3658 PARAMS ((struct aout_final_link_info *, bfd *input_bfd)); 3659static bfd_boolean aout_link_write_symbols 3660 PARAMS ((struct aout_final_link_info *, bfd *input_bfd)); 3661static bfd_boolean aout_link_write_other_symbol 3662 PARAMS ((struct aout_link_hash_entry *, PTR)); 3663static bfd_boolean aout_link_input_section 3664 PARAMS ((struct aout_final_link_info *, bfd *input_bfd, 3665 asection *input_section, file_ptr *reloff_ptr, 3666 bfd_size_type rel_size)); 3667static bfd_boolean aout_link_input_section_std 3668 PARAMS ((struct aout_final_link_info *, bfd *input_bfd, 3669 asection *input_section, struct reloc_std_external *, 3670 bfd_size_type rel_size, bfd_byte *contents)); 3671static bfd_boolean aout_link_input_section_ext 3672 PARAMS ((struct aout_final_link_info *, bfd *input_bfd, 3673 asection *input_section, struct reloc_ext_external *, 3674 bfd_size_type rel_size, bfd_byte *contents)); 3675static INLINE asection *aout_reloc_index_to_section 3676 PARAMS ((bfd *, int)); 3677static bfd_boolean aout_link_reloc_link_order 3678 PARAMS ((struct aout_final_link_info *, asection *, 3679 struct bfd_link_order *)); 3680 3681/* The function to create a new entry in the header file hash table. */ 3682 3683static struct bfd_hash_entry * 3684aout_link_includes_newfunc (entry, table, string) 3685 struct bfd_hash_entry *entry; 3686 struct bfd_hash_table *table; 3687 const char *string; 3688{ 3689 struct aout_link_includes_entry *ret = 3690 (struct aout_link_includes_entry *) entry; 3691 3692 /* Allocate the structure if it has not already been allocated by a 3693 subclass. */ 3694 if (ret == (struct aout_link_includes_entry *) NULL) 3695 ret = ((struct aout_link_includes_entry *) 3696 bfd_hash_allocate (table, 3697 sizeof (struct aout_link_includes_entry))); 3698 if (ret == (struct aout_link_includes_entry *) NULL) 3699 return (struct bfd_hash_entry *) ret; 3700 3701 /* Call the allocation method of the superclass. */ 3702 ret = ((struct aout_link_includes_entry *) 3703 bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); 3704 if (ret) 3705 { 3706 /* Set local fields. */ 3707 ret->totals = NULL; 3708 } 3709 3710 return (struct bfd_hash_entry *) ret; 3711} 3712 3713/* Do the final link step. This is called on the output BFD. The 3714 INFO structure should point to a list of BFDs linked through the 3715 link_next field which can be used to find each BFD which takes part 3716 in the output. Also, each section in ABFD should point to a list 3717 of bfd_link_order structures which list all the input sections for 3718 the output section. */ 3719 3720bfd_boolean 3721NAME(aout,final_link) (abfd, info, callback) 3722 bfd *abfd; 3723 struct bfd_link_info *info; 3724 void (*callback) PARAMS ((bfd *, file_ptr *, file_ptr *, file_ptr *)); 3725{ 3726 struct aout_final_link_info aout_info; 3727 bfd_boolean includes_hash_initialized = FALSE; 3728 register bfd *sub; 3729 bfd_size_type trsize, drsize; 3730 bfd_size_type max_contents_size; 3731 bfd_size_type max_relocs_size; 3732 bfd_size_type max_sym_count; 3733 bfd_size_type text_size; 3734 file_ptr text_end; 3735 register struct bfd_link_order *p; 3736 asection *o; 3737 bfd_boolean have_link_order_relocs; 3738 3739 if (info->shared) 3740 abfd->flags |= DYNAMIC; 3741 3742 aout_info.info = info; 3743 aout_info.output_bfd = abfd; 3744 aout_info.contents = NULL; 3745 aout_info.relocs = NULL; 3746 aout_info.symbol_map = NULL; 3747 aout_info.output_syms = NULL; 3748 3749 if (! bfd_hash_table_init_n (&aout_info.includes.root, 3750 aout_link_includes_newfunc, 3751 251)) 3752 goto error_return; 3753 includes_hash_initialized = TRUE; 3754 3755 /* Figure out the largest section size. Also, if generating 3756 relocatable output, count the relocs. */ 3757 trsize = 0; 3758 drsize = 0; 3759 max_contents_size = 0; 3760 max_relocs_size = 0; 3761 max_sym_count = 0; 3762 for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) 3763 { 3764 bfd_size_type sz; 3765 3766 if (info->relocatable) 3767 { 3768 if (bfd_get_flavour (sub) == bfd_target_aout_flavour) 3769 { 3770 trsize += exec_hdr (sub)->a_trsize; 3771 drsize += exec_hdr (sub)->a_drsize; 3772 } 3773 else 3774 { 3775 /* FIXME: We need to identify the .text and .data sections 3776 and call get_reloc_upper_bound and canonicalize_reloc to 3777 work out the number of relocs needed, and then multiply 3778 by the reloc size. */ 3779 (*_bfd_error_handler) 3780 (_("%s: relocatable link from %s to %s not supported"), 3781 bfd_get_filename (abfd), 3782 sub->xvec->name, abfd->xvec->name); 3783 bfd_set_error (bfd_error_invalid_operation); 3784 goto error_return; 3785 } 3786 } 3787 3788 if (bfd_get_flavour (sub) == bfd_target_aout_flavour) 3789 { 3790 sz = obj_textsec (sub)->size; 3791 if (sz > max_contents_size) 3792 max_contents_size = sz; 3793 sz = obj_datasec (sub)->size; 3794 if (sz > max_contents_size) 3795 max_contents_size = sz; 3796 3797 sz = exec_hdr (sub)->a_trsize; 3798 if (sz > max_relocs_size) 3799 max_relocs_size = sz; 3800 sz = exec_hdr (sub)->a_drsize; 3801 if (sz > max_relocs_size) 3802 max_relocs_size = sz; 3803 3804 sz = obj_aout_external_sym_count (sub); 3805 if (sz > max_sym_count) 3806 max_sym_count = sz; 3807 } 3808 } 3809 3810 if (info->relocatable) 3811 { 3812 if (obj_textsec (abfd) != (asection *) NULL) 3813 trsize += (_bfd_count_link_order_relocs (obj_textsec (abfd) 3814 ->link_order_head) 3815 * obj_reloc_entry_size (abfd)); 3816 if (obj_datasec (abfd) != (asection *) NULL) 3817 drsize += (_bfd_count_link_order_relocs (obj_datasec (abfd) 3818 ->link_order_head) 3819 * obj_reloc_entry_size (abfd)); 3820 } 3821 3822 exec_hdr (abfd)->a_trsize = trsize; 3823 exec_hdr (abfd)->a_drsize = drsize; 3824 3825 exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd); 3826 3827 /* Adjust the section sizes and vmas according to the magic number. 3828 This sets a_text, a_data and a_bss in the exec_hdr and sets the 3829 filepos for each section. */ 3830 if (! NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end)) 3831 goto error_return; 3832 3833 /* The relocation and symbol file positions differ among a.out 3834 targets. We are passed a callback routine from the backend 3835 specific code to handle this. 3836 FIXME: At this point we do not know how much space the symbol 3837 table will require. This will not work for any (nonstandard) 3838 a.out target that needs to know the symbol table size before it 3839 can compute the relocation file positions. This may or may not 3840 be the case for the hp300hpux target, for example. */ 3841 (*callback) (abfd, &aout_info.treloff, &aout_info.dreloff, 3842 &aout_info.symoff); 3843 obj_textsec (abfd)->rel_filepos = aout_info.treloff; 3844 obj_datasec (abfd)->rel_filepos = aout_info.dreloff; 3845 obj_sym_filepos (abfd) = aout_info.symoff; 3846 3847 /* We keep a count of the symbols as we output them. */ 3848 obj_aout_external_sym_count (abfd) = 0; 3849 3850 /* We accumulate the string table as we write out the symbols. */ 3851 aout_info.strtab = _bfd_stringtab_init (); 3852 if (aout_info.strtab == NULL) 3853 goto error_return; 3854 3855 /* Allocate buffers to hold section contents and relocs. */ 3856 aout_info.contents = (bfd_byte *) bfd_malloc (max_contents_size); 3857 aout_info.relocs = (PTR) bfd_malloc (max_relocs_size); 3858 aout_info.symbol_map = (int *) bfd_malloc (max_sym_count * sizeof (int *)); 3859 aout_info.output_syms = ((struct external_nlist *) 3860 bfd_malloc ((max_sym_count + 1) 3861 * sizeof (struct external_nlist))); 3862 if ((aout_info.contents == NULL && max_contents_size != 0) 3863 || (aout_info.relocs == NULL && max_relocs_size != 0) 3864 || (aout_info.symbol_map == NULL && max_sym_count != 0) 3865 || aout_info.output_syms == NULL) 3866 goto error_return; 3867 3868 /* If we have a symbol named __DYNAMIC, force it out now. This is 3869 required by SunOS. Doing this here rather than in sunos.c is a 3870 hack, but it's easier than exporting everything which would be 3871 needed. */ 3872 { 3873 struct aout_link_hash_entry *h; 3874 3875 h = aout_link_hash_lookup (aout_hash_table (info), "__DYNAMIC", 3876 FALSE, FALSE, FALSE); 3877 if (h != NULL) 3878 aout_link_write_other_symbol (h, &aout_info); 3879 } 3880 3881 /* The most time efficient way to do the link would be to read all 3882 the input object files into memory and then sort out the 3883 information into the output file. Unfortunately, that will 3884 probably use too much memory. Another method would be to step 3885 through everything that composes the text section and write it 3886 out, and then everything that composes the data section and write 3887 it out, and then write out the relocs, and then write out the 3888 symbols. Unfortunately, that requires reading stuff from each 3889 input file several times, and we will not be able to keep all the 3890 input files open simultaneously, and reopening them will be slow. 3891 3892 What we do is basically process one input file at a time. We do 3893 everything we need to do with an input file once--copy over the 3894 section contents, handle the relocation information, and write 3895 out the symbols--and then we throw away the information we read 3896 from it. This approach requires a lot of lseeks of the output 3897 file, which is unfortunate but still faster than reopening a lot 3898 of files. 3899 3900 We use the output_has_begun field of the input BFDs to see 3901 whether we have already handled it. */ 3902 for (sub = info->input_bfds; sub != (bfd *) NULL; sub = sub->link_next) 3903 sub->output_has_begun = FALSE; 3904 3905 /* Mark all sections which are to be included in the link. This 3906 will normally be every section. We need to do this so that we 3907 can identify any sections which the linker has decided to not 3908 include. */ 3909 for (o = abfd->sections; o != NULL; o = o->next) 3910 { 3911 for (p = o->link_order_head; p != NULL; p = p->next) 3912 if (p->type == bfd_indirect_link_order) 3913 p->u.indirect.section->linker_mark = TRUE; 3914 } 3915 3916 have_link_order_relocs = FALSE; 3917 for (o = abfd->sections; o != (asection *) NULL; o = o->next) 3918 { 3919 for (p = o->link_order_head; 3920 p != (struct bfd_link_order *) NULL; 3921 p = p->next) 3922 { 3923 if (p->type == bfd_indirect_link_order 3924 && (bfd_get_flavour (p->u.indirect.section->owner) 3925 == bfd_target_aout_flavour)) 3926 { 3927 bfd *input_bfd; 3928 3929 input_bfd = p->u.indirect.section->owner; 3930 if (! input_bfd->output_has_begun) 3931 { 3932 if (! aout_link_input_bfd (&aout_info, input_bfd)) 3933 goto error_return; 3934 input_bfd->output_has_begun = TRUE; 3935 } 3936 } 3937 else if (p->type == bfd_section_reloc_link_order 3938 || p->type == bfd_symbol_reloc_link_order) 3939 { 3940 /* These are handled below. */ 3941 have_link_order_relocs = TRUE; 3942 } 3943 else 3944 { 3945 if (! _bfd_default_link_order (abfd, info, o, p)) 3946 goto error_return; 3947 } 3948 } 3949 } 3950 3951 /* Write out any symbols that we have not already written out. */ 3952 aout_link_hash_traverse (aout_hash_table (info), 3953 aout_link_write_other_symbol, 3954 (PTR) &aout_info); 3955 3956 /* Now handle any relocs we were asked to create by the linker. 3957 These did not come from any input file. We must do these after 3958 we have written out all the symbols, so that we know the symbol 3959 indices to use. */ 3960 if (have_link_order_relocs) 3961 { 3962 for (o = abfd->sections; o != (asection *) NULL; o = o->next) 3963 { 3964 for (p = o->link_order_head; 3965 p != (struct bfd_link_order *) NULL; 3966 p = p->next) 3967 { 3968 if (p->type == bfd_section_reloc_link_order 3969 || p->type == bfd_symbol_reloc_link_order) 3970 { 3971 if (! aout_link_reloc_link_order (&aout_info, o, p)) 3972 goto error_return; 3973 } 3974 } 3975 } 3976 } 3977 3978 if (aout_info.contents != NULL) 3979 { 3980 free (aout_info.contents); 3981 aout_info.contents = NULL; 3982 } 3983 if (aout_info.relocs != NULL) 3984 { 3985 free (aout_info.relocs); 3986 aout_info.relocs = NULL; 3987 } 3988 if (aout_info.symbol_map != NULL) 3989 { 3990 free (aout_info.symbol_map); 3991 aout_info.symbol_map = NULL; 3992 } 3993 if (aout_info.output_syms != NULL) 3994 { 3995 free (aout_info.output_syms); 3996 aout_info.output_syms = NULL; 3997 } 3998 if (includes_hash_initialized) 3999 { 4000 bfd_hash_table_free (&aout_info.includes.root); 4001 includes_hash_initialized = FALSE; 4002 } 4003 4004 /* Finish up any dynamic linking we may be doing. */ 4005 if (aout_backend_info (abfd)->finish_dynamic_link != NULL) 4006 { 4007 if (! (*aout_backend_info (abfd)->finish_dynamic_link) (abfd, info)) 4008 goto error_return; 4009 } 4010 4011 /* Update the header information. */ 4012 abfd->symcount = obj_aout_external_sym_count (abfd); 4013 exec_hdr (abfd)->a_syms = abfd->symcount * EXTERNAL_NLIST_SIZE; 4014 obj_str_filepos (abfd) = obj_sym_filepos (abfd) + exec_hdr (abfd)->a_syms; 4015 obj_textsec (abfd)->reloc_count = 4016 exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd); 4017 obj_datasec (abfd)->reloc_count = 4018 exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd); 4019 4020 /* Write out the string table, unless there are no symbols. */ 4021 if (abfd->symcount > 0) 4022 { 4023 if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0 4024 || ! emit_stringtab (abfd, aout_info.strtab)) 4025 goto error_return; 4026 } 4027 else if (obj_textsec (abfd)->reloc_count == 0 4028 && obj_datasec (abfd)->reloc_count == 0) 4029 { 4030 bfd_byte b; 4031 file_ptr pos; 4032 4033 b = 0; 4034 pos = obj_datasec (abfd)->filepos + exec_hdr (abfd)->a_data - 1; 4035 if (bfd_seek (abfd, pos, SEEK_SET) != 0 4036 || bfd_bwrite (&b, (bfd_size_type) 1, abfd) != 1) 4037 goto error_return; 4038 } 4039 4040 return TRUE; 4041 4042 error_return: 4043 if (aout_info.contents != NULL) 4044 free (aout_info.contents); 4045 if (aout_info.relocs != NULL) 4046 free (aout_info.relocs); 4047 if (aout_info.symbol_map != NULL) 4048 free (aout_info.symbol_map); 4049 if (aout_info.output_syms != NULL) 4050 free (aout_info.output_syms); 4051 if (includes_hash_initialized) 4052 bfd_hash_table_free (&aout_info.includes.root); 4053 return FALSE; 4054} 4055 4056/* Link an a.out input BFD into the output file. */ 4057 4058static bfd_boolean 4059aout_link_input_bfd (finfo, input_bfd) 4060 struct aout_final_link_info *finfo; 4061 bfd *input_bfd; 4062{ 4063 bfd_size_type sym_count; 4064 4065 BFD_ASSERT (bfd_get_format (input_bfd) == bfd_object); 4066 4067 /* If this is a dynamic object, it may need special handling. */ 4068 if ((input_bfd->flags & DYNAMIC) != 0 4069 && aout_backend_info (input_bfd)->link_dynamic_object != NULL) 4070 { 4071 return ((*aout_backend_info (input_bfd)->link_dynamic_object) 4072 (finfo->info, input_bfd)); 4073 } 4074 4075 /* Get the symbols. We probably have them already, unless 4076 finfo->info->keep_memory is FALSE. */ 4077 if (! aout_get_external_symbols (input_bfd)) 4078 return FALSE; 4079 4080 sym_count = obj_aout_external_sym_count (input_bfd); 4081 4082 /* Write out the symbols and get a map of the new indices. The map 4083 is placed into finfo->symbol_map. */ 4084 if (! aout_link_write_symbols (finfo, input_bfd)) 4085 return FALSE; 4086 4087 /* Relocate and write out the sections. These functions use the 4088 symbol map created by aout_link_write_symbols. The linker_mark 4089 field will be set if these sections are to be included in the 4090 link, which will normally be the case. */ 4091 if (obj_textsec (input_bfd)->linker_mark) 4092 { 4093 if (! aout_link_input_section (finfo, input_bfd, 4094 obj_textsec (input_bfd), 4095 &finfo->treloff, 4096 exec_hdr (input_bfd)->a_trsize)) 4097 return FALSE; 4098 } 4099 if (obj_datasec (input_bfd)->linker_mark) 4100 { 4101 if (! aout_link_input_section (finfo, input_bfd, 4102 obj_datasec (input_bfd), 4103 &finfo->dreloff, 4104 exec_hdr (input_bfd)->a_drsize)) 4105 return FALSE; 4106 } 4107 4108 /* If we are not keeping memory, we don't need the symbols any 4109 longer. We still need them if we are keeping memory, because the 4110 strings in the hash table point into them. */ 4111 if (! finfo->info->keep_memory) 4112 { 4113 if (! aout_link_free_symbols (input_bfd)) 4114 return FALSE; 4115 } 4116 4117 return TRUE; 4118} 4119 4120/* Adjust and write out the symbols for an a.out file. Set the new 4121 symbol indices into a symbol_map. */ 4122 4123static bfd_boolean 4124aout_link_write_symbols (finfo, input_bfd) 4125 struct aout_final_link_info *finfo; 4126 bfd *input_bfd; 4127{ 4128 bfd *output_bfd; 4129 bfd_size_type sym_count; 4130 char *strings; 4131 enum bfd_link_strip strip; 4132 enum bfd_link_discard discard; 4133 struct external_nlist *outsym; 4134 bfd_size_type strtab_index; 4135 register struct external_nlist *sym; 4136 struct external_nlist *sym_end; 4137 struct aout_link_hash_entry **sym_hash; 4138 int *symbol_map; 4139 bfd_boolean pass; 4140 bfd_boolean skip_next; 4141 4142 output_bfd = finfo->output_bfd; 4143 sym_count = obj_aout_external_sym_count (input_bfd); 4144 strings = obj_aout_external_strings (input_bfd); 4145 strip = finfo->info->strip; 4146 discard = finfo->info->discard; 4147 outsym = finfo->output_syms; 4148 4149 /* First write out a symbol for this object file, unless we are 4150 discarding such symbols. */ 4151 if (strip != strip_all 4152 && (strip != strip_some 4153 || bfd_hash_lookup (finfo->info->keep_hash, input_bfd->filename, 4154 FALSE, FALSE) != NULL) 4155 && discard != discard_all) 4156 { 4157 H_PUT_8 (output_bfd, N_TEXT, outsym->e_type); 4158 H_PUT_8 (output_bfd, 0, outsym->e_other); 4159 H_PUT_16 (output_bfd, 0, outsym->e_desc); 4160 strtab_index = add_to_stringtab (output_bfd, finfo->strtab, 4161 input_bfd->filename, FALSE); 4162 if (strtab_index == (bfd_size_type) -1) 4163 return FALSE; 4164 PUT_WORD (output_bfd, strtab_index, outsym->e_strx); 4165 PUT_WORD (output_bfd, 4166 (bfd_get_section_vma (output_bfd, 4167 obj_textsec (input_bfd)->output_section) 4168 + obj_textsec (input_bfd)->output_offset), 4169 outsym->e_value); 4170 ++obj_aout_external_sym_count (output_bfd); 4171 ++outsym; 4172 } 4173 4174 pass = FALSE; 4175 skip_next = FALSE; 4176 sym = obj_aout_external_syms (input_bfd); 4177 sym_end = sym + sym_count; 4178 sym_hash = obj_aout_sym_hashes (input_bfd); 4179 symbol_map = finfo->symbol_map; 4180 memset (symbol_map, 0, (size_t) sym_count * sizeof *symbol_map); 4181 for (; sym < sym_end; sym++, sym_hash++, symbol_map++) 4182 { 4183 const char *name; 4184 int type; 4185 struct aout_link_hash_entry *h; 4186 bfd_boolean skip; 4187 asection *symsec; 4188 bfd_vma val = 0; 4189 bfd_boolean copy; 4190 4191 /* We set *symbol_map to 0 above for all symbols. If it has 4192 already been set to -1 for this symbol, it means that we are 4193 discarding it because it appears in a duplicate header file. 4194 See the N_BINCL code below. */ 4195 if (*symbol_map == -1) 4196 continue; 4197 4198 /* Initialize *symbol_map to -1, which means that the symbol was 4199 not copied into the output file. We will change it later if 4200 we do copy the symbol over. */ 4201 *symbol_map = -1; 4202 4203 type = H_GET_8 (input_bfd, sym->e_type); 4204 name = strings + GET_WORD (input_bfd, sym->e_strx); 4205 4206 h = NULL; 4207 4208 if (pass) 4209 { 4210 /* Pass this symbol through. It is the target of an 4211 indirect or warning symbol. */ 4212 val = GET_WORD (input_bfd, sym->e_value); 4213 pass = FALSE; 4214 } 4215 else if (skip_next) 4216 { 4217 /* Skip this symbol, which is the target of an indirect 4218 symbol that we have changed to no longer be an indirect 4219 symbol. */ 4220 skip_next = FALSE; 4221 continue; 4222 } 4223 else 4224 { 4225 struct aout_link_hash_entry *hresolve; 4226 4227 /* We have saved the hash table entry for this symbol, if 4228 there is one. Note that we could just look it up again 4229 in the hash table, provided we first check that it is an 4230 external symbol. */ 4231 h = *sym_hash; 4232 4233 /* Use the name from the hash table, in case the symbol was 4234 wrapped. */ 4235 if (h != NULL 4236 && h->root.type != bfd_link_hash_warning) 4237 name = h->root.root.string; 4238 4239 /* If this is an indirect or warning symbol, then change 4240 hresolve to the base symbol. We also change *sym_hash so 4241 that the relocation routines relocate against the real 4242 symbol. */ 4243 hresolve = h; 4244 if (h != (struct aout_link_hash_entry *) NULL 4245 && (h->root.type == bfd_link_hash_indirect 4246 || h->root.type == bfd_link_hash_warning)) 4247 { 4248 hresolve = (struct aout_link_hash_entry *) h->root.u.i.link; 4249 while (hresolve->root.type == bfd_link_hash_indirect 4250 || hresolve->root.type == bfd_link_hash_warning) 4251 hresolve = ((struct aout_link_hash_entry *) 4252 hresolve->root.u.i.link); 4253 *sym_hash = hresolve; 4254 } 4255 4256 /* If the symbol has already been written out, skip it. */ 4257 if (h != (struct aout_link_hash_entry *) NULL 4258 && h->written) 4259 { 4260 if ((type & N_TYPE) == N_INDR 4261 || type == N_WARNING) 4262 skip_next = TRUE; 4263 *symbol_map = h->indx; 4264 continue; 4265 } 4266 4267 /* See if we are stripping this symbol. */ 4268 skip = FALSE; 4269 switch (strip) 4270 { 4271 case strip_none: 4272 break; 4273 case strip_debugger: 4274 if ((type & N_STAB) != 0) 4275 skip = TRUE; 4276 break; 4277 case strip_some: 4278 if (bfd_hash_lookup (finfo->info->keep_hash, name, FALSE, FALSE) 4279 == NULL) 4280 skip = TRUE; 4281 break; 4282 case strip_all: 4283 skip = TRUE; 4284 break; 4285 } 4286 if (skip) 4287 { 4288 if (h != (struct aout_link_hash_entry *) NULL) 4289 h->written = TRUE; 4290 continue; 4291 } 4292 4293 /* Get the value of the symbol. */ 4294 if ((type & N_TYPE) == N_TEXT 4295 || type == N_WEAKT) 4296 symsec = obj_textsec (input_bfd); 4297 else if ((type & N_TYPE) == N_DATA 4298 || type == N_WEAKD) 4299 symsec = obj_datasec (input_bfd); 4300 else if ((type & N_TYPE) == N_BSS 4301 || type == N_WEAKB) 4302 symsec = obj_bsssec (input_bfd); 4303 else if ((type & N_TYPE) == N_ABS 4304 || type == N_WEAKA) 4305 symsec = bfd_abs_section_ptr; 4306 else if (((type & N_TYPE) == N_INDR 4307 && (hresolve == (struct aout_link_hash_entry *) NULL 4308 || (hresolve->root.type != bfd_link_hash_defined 4309 && hresolve->root.type != bfd_link_hash_defweak 4310 && hresolve->root.type != bfd_link_hash_common))) 4311 || type == N_WARNING) 4312 { 4313 /* Pass the next symbol through unchanged. The 4314 condition above for indirect symbols is so that if 4315 the indirect symbol was defined, we output it with 4316 the correct definition so the debugger will 4317 understand it. */ 4318 pass = TRUE; 4319 val = GET_WORD (input_bfd, sym->e_value); 4320 symsec = NULL; 4321 } 4322 else if ((type & N_STAB) != 0) 4323 { 4324 val = GET_WORD (input_bfd, sym->e_value); 4325 symsec = NULL; 4326 } 4327 else 4328 { 4329 /* If we get here with an indirect symbol, it means that 4330 we are outputting it with a real definition. In such 4331 a case we do not want to output the next symbol, 4332 which is the target of the indirection. */ 4333 if ((type & N_TYPE) == N_INDR) 4334 skip_next = TRUE; 4335 4336 symsec = NULL; 4337 4338 /* We need to get the value from the hash table. We use 4339 hresolve so that if we have defined an indirect 4340 symbol we output the final definition. */ 4341 if (h == (struct aout_link_hash_entry *) NULL) 4342 { 4343 switch (type & N_TYPE) 4344 { 4345 case N_SETT: 4346 symsec = obj_textsec (input_bfd); 4347 break; 4348 case N_SETD: 4349 symsec = obj_datasec (input_bfd); 4350 break; 4351 case N_SETB: 4352 symsec = obj_bsssec (input_bfd); 4353 break; 4354 case N_SETA: 4355 symsec = bfd_abs_section_ptr; 4356 break; 4357 default: 4358 val = 0; 4359 break; 4360 } 4361 } 4362 else if (hresolve->root.type == bfd_link_hash_defined 4363 || hresolve->root.type == bfd_link_hash_defweak) 4364 { 4365 asection *input_section; 4366 asection *output_section; 4367 4368 /* This case usually means a common symbol which was 4369 turned into a defined symbol. */ 4370 input_section = hresolve->root.u.def.section; 4371 output_section = input_section->output_section; 4372 BFD_ASSERT (bfd_is_abs_section (output_section) 4373 || output_section->owner == output_bfd); 4374 val = (hresolve->root.u.def.value 4375 + bfd_get_section_vma (output_bfd, output_section) 4376 + input_section->output_offset); 4377 4378 /* Get the correct type based on the section. If 4379 this is a constructed set, force it to be 4380 globally visible. */ 4381 if (type == N_SETT 4382 || type == N_SETD 4383 || type == N_SETB 4384 || type == N_SETA) 4385 type |= N_EXT; 4386 4387 type &=~ N_TYPE; 4388 4389 if (output_section == obj_textsec (output_bfd)) 4390 type |= (hresolve->root.type == bfd_link_hash_defined 4391 ? N_TEXT 4392 : N_WEAKT); 4393 else if (output_section == obj_datasec (output_bfd)) 4394 type |= (hresolve->root.type == bfd_link_hash_defined 4395 ? N_DATA 4396 : N_WEAKD); 4397 else if (output_section == obj_bsssec (output_bfd)) 4398 type |= (hresolve->root.type == bfd_link_hash_defined 4399 ? N_BSS 4400 : N_WEAKB); 4401 else 4402 type |= (hresolve->root.type == bfd_link_hash_defined 4403 ? N_ABS 4404 : N_WEAKA); 4405 } 4406 else if (hresolve->root.type == bfd_link_hash_common) 4407 val = hresolve->root.u.c.size; 4408 else if (hresolve->root.type == bfd_link_hash_undefweak) 4409 { 4410 val = 0; 4411 type = N_WEAKU; 4412 } 4413 else 4414 val = 0; 4415 } 4416 if (symsec != (asection *) NULL) 4417 val = (symsec->output_section->vma 4418 + symsec->output_offset 4419 + (GET_WORD (input_bfd, sym->e_value) 4420 - symsec->vma)); 4421 4422 /* If this is a global symbol set the written flag, and if 4423 it is a local symbol see if we should discard it. */ 4424 if (h != (struct aout_link_hash_entry *) NULL) 4425 { 4426 h->written = TRUE; 4427 h->indx = obj_aout_external_sym_count (output_bfd); 4428 } 4429 else if ((type & N_TYPE) != N_SETT 4430 && (type & N_TYPE) != N_SETD 4431 && (type & N_TYPE) != N_SETB 4432 && (type & N_TYPE) != N_SETA) 4433 { 4434 switch (discard) 4435 { 4436 case discard_none: 4437 case discard_sec_merge: 4438 break; 4439 case discard_l: 4440 if ((type & N_STAB) == 0 4441 && bfd_is_local_label_name (input_bfd, name)) 4442 skip = TRUE; 4443 break; 4444 case discard_all: 4445 skip = TRUE; 4446 break; 4447 } 4448 if (skip) 4449 { 4450 pass = FALSE; 4451 continue; 4452 } 4453 } 4454 4455 /* An N_BINCL symbol indicates the start of the stabs 4456 entries for a header file. We need to scan ahead to the 4457 next N_EINCL symbol, ignoring nesting, adding up all the 4458 characters in the symbol names, not including the file 4459 numbers in types (the first number after an open 4460 parenthesis). */ 4461 if (type == (int) N_BINCL) 4462 { 4463 struct external_nlist *incl_sym; 4464 int nest; 4465 struct aout_link_includes_entry *incl_entry; 4466 struct aout_link_includes_totals *t; 4467 4468 val = 0; 4469 nest = 0; 4470 for (incl_sym = sym + 1; incl_sym < sym_end; incl_sym++) 4471 { 4472 int incl_type; 4473 4474 incl_type = H_GET_8 (input_bfd, incl_sym->e_type); 4475 if (incl_type == (int) N_EINCL) 4476 { 4477 if (nest == 0) 4478 break; 4479 --nest; 4480 } 4481 else if (incl_type == (int) N_BINCL) 4482 ++nest; 4483 else if (nest == 0) 4484 { 4485 const char *s; 4486 4487 s = strings + GET_WORD (input_bfd, incl_sym->e_strx); 4488 for (; *s != '\0'; s++) 4489 { 4490 val += *s; 4491 if (*s == '(') 4492 { 4493 /* Skip the file number. */ 4494 ++s; 4495 while (ISDIGIT (*s)) 4496 ++s; 4497 --s; 4498 } 4499 } 4500 } 4501 } 4502 4503 /* If we have already included a header file with the 4504 same value, then replace this one with an N_EXCL 4505 symbol. */ 4506 copy = (bfd_boolean) (! finfo->info->keep_memory); 4507 incl_entry = aout_link_includes_lookup (&finfo->includes, 4508 name, TRUE, copy); 4509 if (incl_entry == NULL) 4510 return FALSE; 4511 for (t = incl_entry->totals; t != NULL; t = t->next) 4512 if (t->total == val) 4513 break; 4514 if (t == NULL) 4515 { 4516 /* This is the first time we have seen this header 4517 file with this set of stabs strings. */ 4518 t = ((struct aout_link_includes_totals *) 4519 bfd_hash_allocate (&finfo->includes.root, 4520 sizeof *t)); 4521 if (t == NULL) 4522 return FALSE; 4523 t->total = val; 4524 t->next = incl_entry->totals; 4525 incl_entry->totals = t; 4526 } 4527 else 4528 { 4529 int *incl_map; 4530 4531 /* This is a duplicate header file. We must change 4532 it to be an N_EXCL entry, and mark all the 4533 included symbols to prevent outputting them. */ 4534 type = (int) N_EXCL; 4535 4536 nest = 0; 4537 for (incl_sym = sym + 1, incl_map = symbol_map + 1; 4538 incl_sym < sym_end; 4539 incl_sym++, incl_map++) 4540 { 4541 int incl_type; 4542 4543 incl_type = H_GET_8 (input_bfd, incl_sym->e_type); 4544 if (incl_type == (int) N_EINCL) 4545 { 4546 if (nest == 0) 4547 { 4548 *incl_map = -1; 4549 break; 4550 } 4551 --nest; 4552 } 4553 else if (incl_type == (int) N_BINCL) 4554 ++nest; 4555 else if (nest == 0) 4556 *incl_map = -1; 4557 } 4558 } 4559 } 4560 } 4561 4562 /* Copy this symbol into the list of symbols we are going to 4563 write out. */ 4564 H_PUT_8 (output_bfd, type, outsym->e_type); 4565 H_PUT_8 (output_bfd, H_GET_8 (input_bfd, sym->e_other), outsym->e_other); 4566 H_PUT_16 (output_bfd, H_GET_16 (input_bfd, sym->e_desc), outsym->e_desc); 4567 copy = FALSE; 4568 if (! finfo->info->keep_memory) 4569 { 4570 /* name points into a string table which we are going to 4571 free. If there is a hash table entry, use that string. 4572 Otherwise, copy name into memory. */ 4573 if (h != (struct aout_link_hash_entry *) NULL) 4574 name = h->root.root.string; 4575 else 4576 copy = TRUE; 4577 } 4578 strtab_index = add_to_stringtab (output_bfd, finfo->strtab, 4579 name, copy); 4580 if (strtab_index == (bfd_size_type) -1) 4581 return FALSE; 4582 PUT_WORD (output_bfd, strtab_index, outsym->e_strx); 4583 PUT_WORD (output_bfd, val, outsym->e_value); 4584 *symbol_map = obj_aout_external_sym_count (output_bfd); 4585 ++obj_aout_external_sym_count (output_bfd); 4586 ++outsym; 4587 } 4588 4589 /* Write out the output symbols we have just constructed. */ 4590 if (outsym > finfo->output_syms) 4591 { 4592 bfd_size_type outsym_size; 4593 4594 if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0) 4595 return FALSE; 4596 outsym_size = outsym - finfo->output_syms; 4597 outsym_size *= EXTERNAL_NLIST_SIZE; 4598 if (bfd_bwrite ((PTR) finfo->output_syms, outsym_size, output_bfd) 4599 != outsym_size) 4600 return FALSE; 4601 finfo->symoff += outsym_size; 4602 } 4603 4604 return TRUE; 4605} 4606 4607/* Write out a symbol that was not associated with an a.out input 4608 object. */ 4609 4610static bfd_boolean 4611aout_link_write_other_symbol (h, data) 4612 struct aout_link_hash_entry *h; 4613 PTR data; 4614{ 4615 struct aout_final_link_info *finfo = (struct aout_final_link_info *) data; 4616 bfd *output_bfd; 4617 int type; 4618 bfd_vma val; 4619 struct external_nlist outsym; 4620 bfd_size_type indx; 4621 bfd_size_type amt; 4622 4623 if (h->root.type == bfd_link_hash_warning) 4624 { 4625 h = (struct aout_link_hash_entry *) h->root.u.i.link; 4626 if (h->root.type == bfd_link_hash_new) 4627 return TRUE; 4628 } 4629 4630 output_bfd = finfo->output_bfd; 4631 4632 if (aout_backend_info (output_bfd)->write_dynamic_symbol != NULL) 4633 { 4634 if (! ((*aout_backend_info (output_bfd)->write_dynamic_symbol) 4635 (output_bfd, finfo->info, h))) 4636 { 4637 /* FIXME: No way to handle errors. */ 4638 abort (); 4639 } 4640 } 4641 4642 if (h->written) 4643 return TRUE; 4644 4645 h->written = TRUE; 4646 4647 /* An indx of -2 means the symbol must be written. */ 4648 if (h->indx != -2 4649 && (finfo->info->strip == strip_all 4650 || (finfo->info->strip == strip_some 4651 && bfd_hash_lookup (finfo->info->keep_hash, h->root.root.string, 4652 FALSE, FALSE) == NULL))) 4653 return TRUE; 4654 4655 switch (h->root.type) 4656 { 4657 default: 4658 case bfd_link_hash_warning: 4659 abort (); 4660 /* Avoid variable not initialized warnings. */ 4661 return TRUE; 4662 case bfd_link_hash_new: 4663 /* This can happen for set symbols when sets are not being 4664 built. */ 4665 return TRUE; 4666 case bfd_link_hash_undefined: 4667 type = N_UNDF | N_EXT; 4668 val = 0; 4669 break; 4670 case bfd_link_hash_defined: 4671 case bfd_link_hash_defweak: 4672 { 4673 asection *sec; 4674 4675 sec = h->root.u.def.section->output_section; 4676 BFD_ASSERT (bfd_is_abs_section (sec) 4677 || sec->owner == output_bfd); 4678 if (sec == obj_textsec (output_bfd)) 4679 type = h->root.type == bfd_link_hash_defined ? N_TEXT : N_WEAKT; 4680 else if (sec == obj_datasec (output_bfd)) 4681 type = h->root.type == bfd_link_hash_defined ? N_DATA : N_WEAKD; 4682 else if (sec == obj_bsssec (output_bfd)) 4683 type = h->root.type == bfd_link_hash_defined ? N_BSS : N_WEAKB; 4684 else 4685 type = h->root.type == bfd_link_hash_defined ? N_ABS : N_WEAKA; 4686 type |= N_EXT; 4687 val = (h->root.u.def.value 4688 + sec->vma 4689 + h->root.u.def.section->output_offset); 4690 } 4691 break; 4692 case bfd_link_hash_common: 4693 type = N_UNDF | N_EXT; 4694 val = h->root.u.c.size; 4695 break; 4696 case bfd_link_hash_undefweak: 4697 type = N_WEAKU; 4698 val = 0; 4699 case bfd_link_hash_indirect: 4700 /* We ignore these symbols, since the indirected symbol is 4701 already in the hash table. */ 4702 return TRUE; 4703 } 4704 4705 H_PUT_8 (output_bfd, type, outsym.e_type); 4706 H_PUT_8 (output_bfd, 0, outsym.e_other); 4707 H_PUT_16 (output_bfd, 0, outsym.e_desc); 4708 indx = add_to_stringtab (output_bfd, finfo->strtab, h->root.root.string, 4709 FALSE); 4710 if (indx == - (bfd_size_type) 1) 4711 { 4712 /* FIXME: No way to handle errors. */ 4713 abort (); 4714 } 4715 PUT_WORD (output_bfd, indx, outsym.e_strx); 4716 PUT_WORD (output_bfd, val, outsym.e_value); 4717 4718 amt = EXTERNAL_NLIST_SIZE; 4719 if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0 4720 || bfd_bwrite ((PTR) &outsym, amt, output_bfd) != amt) 4721 { 4722 /* FIXME: No way to handle errors. */ 4723 abort (); 4724 } 4725 4726 finfo->symoff += EXTERNAL_NLIST_SIZE; 4727 h->indx = obj_aout_external_sym_count (output_bfd); 4728 ++obj_aout_external_sym_count (output_bfd); 4729 4730 return TRUE; 4731} 4732 4733/* Link an a.out section into the output file. */ 4734 4735static bfd_boolean 4736aout_link_input_section (finfo, input_bfd, input_section, reloff_ptr, 4737 rel_size) 4738 struct aout_final_link_info *finfo; 4739 bfd *input_bfd; 4740 asection *input_section; 4741 file_ptr *reloff_ptr; 4742 bfd_size_type rel_size; 4743{ 4744 bfd_size_type input_size; 4745 PTR relocs; 4746 4747 /* Get the section contents. */ 4748 input_size = input_section->size; 4749 if (! bfd_get_section_contents (input_bfd, input_section, 4750 (PTR) finfo->contents, 4751 (file_ptr) 0, input_size)) 4752 return FALSE; 4753 4754 /* Read in the relocs if we haven't already done it. */ 4755 if (aout_section_data (input_section) != NULL 4756 && aout_section_data (input_section)->relocs != NULL) 4757 relocs = aout_section_data (input_section)->relocs; 4758 else 4759 { 4760 relocs = finfo->relocs; 4761 if (rel_size > 0) 4762 { 4763 if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0 4764 || bfd_bread (relocs, rel_size, input_bfd) != rel_size) 4765 return FALSE; 4766 } 4767 } 4768 4769 /* Relocate the section contents. */ 4770 if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE) 4771 { 4772 if (! aout_link_input_section_std (finfo, input_bfd, input_section, 4773 (struct reloc_std_external *) relocs, 4774 rel_size, finfo->contents)) 4775 return FALSE; 4776 } 4777 else 4778 { 4779 if (! aout_link_input_section_ext (finfo, input_bfd, input_section, 4780 (struct reloc_ext_external *) relocs, 4781 rel_size, finfo->contents)) 4782 return FALSE; 4783 } 4784 4785 /* Write out the section contents. */ 4786 if (! bfd_set_section_contents (finfo->output_bfd, 4787 input_section->output_section, 4788 (PTR) finfo->contents, 4789 (file_ptr) input_section->output_offset, 4790 input_size)) 4791 return FALSE; 4792 4793 /* If we are producing relocatable output, the relocs were 4794 modified, and we now write them out. */ 4795 if (finfo->info->relocatable && rel_size > 0) 4796 { 4797 if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0) 4798 return FALSE; 4799 if (bfd_bwrite (relocs, rel_size, finfo->output_bfd) != rel_size) 4800 return FALSE; 4801 *reloff_ptr += rel_size; 4802 4803 /* Assert that the relocs have not run into the symbols, and 4804 that if these are the text relocs they have not run into the 4805 data relocs. */ 4806 BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd) 4807 && (reloff_ptr != &finfo->treloff 4808 || (*reloff_ptr 4809 <= obj_datasec (finfo->output_bfd)->rel_filepos))); 4810 } 4811 4812 return TRUE; 4813} 4814 4815/* Get the section corresponding to a reloc index. */ 4816 4817static INLINE asection * 4818aout_reloc_index_to_section (abfd, indx) 4819 bfd *abfd; 4820 int indx; 4821{ 4822 switch (indx & N_TYPE) 4823 { 4824 case N_TEXT: 4825 return obj_textsec (abfd); 4826 case N_DATA: 4827 return obj_datasec (abfd); 4828 case N_BSS: 4829 return obj_bsssec (abfd); 4830 case N_ABS: 4831 case N_UNDF: 4832 return bfd_abs_section_ptr; 4833 default: 4834 abort (); 4835 } 4836 /*NOTREACHED*/ 4837 return NULL; 4838} 4839 4840/* Relocate an a.out section using standard a.out relocs. */ 4841 4842static bfd_boolean 4843aout_link_input_section_std (finfo, input_bfd, input_section, relocs, 4844 rel_size, contents) 4845 struct aout_final_link_info *finfo; 4846 bfd *input_bfd; 4847 asection *input_section; 4848 struct reloc_std_external *relocs; 4849 bfd_size_type rel_size; 4850 bfd_byte *contents; 4851{ 4852 bfd_boolean (*check_dynamic_reloc) 4853 PARAMS ((struct bfd_link_info *, bfd *, asection *, 4854 struct aout_link_hash_entry *, PTR, bfd_byte *, bfd_boolean *, 4855 bfd_vma *)); 4856 bfd *output_bfd; 4857 bfd_boolean relocatable; 4858 struct external_nlist *syms; 4859 char *strings; 4860 struct aout_link_hash_entry **sym_hashes; 4861 int *symbol_map; 4862 bfd_size_type reloc_count; 4863 register struct reloc_std_external *rel; 4864 struct reloc_std_external *rel_end; 4865 4866 output_bfd = finfo->output_bfd; 4867 check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc; 4868 4869 BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE); 4870 BFD_ASSERT (input_bfd->xvec->header_byteorder 4871 == output_bfd->xvec->header_byteorder); 4872 4873 relocatable = finfo->info->relocatable; 4874 syms = obj_aout_external_syms (input_bfd); 4875 strings = obj_aout_external_strings (input_bfd); 4876 sym_hashes = obj_aout_sym_hashes (input_bfd); 4877 symbol_map = finfo->symbol_map; 4878 4879 reloc_count = rel_size / RELOC_STD_SIZE; 4880 rel = relocs; 4881 rel_end = rel + reloc_count; 4882 for (; rel < rel_end; rel++) 4883 { 4884 bfd_vma r_addr; 4885 int r_index; 4886 int r_extern; 4887 int r_pcrel; 4888 int r_baserel = 0; 4889 reloc_howto_type *howto; 4890 struct aout_link_hash_entry *h = NULL; 4891 bfd_vma relocation; 4892 bfd_reloc_status_type r; 4893 4894 r_addr = GET_SWORD (input_bfd, rel->r_address); 4895 4896#ifdef MY_reloc_howto 4897 howto = MY_reloc_howto (input_bfd, rel, r_index, r_extern, r_pcrel); 4898#else 4899 { 4900 int r_jmptable; 4901 int r_relative; 4902 int r_length; 4903 unsigned int howto_idx; 4904 4905 if (bfd_header_big_endian (input_bfd)) 4906 { 4907 r_index = (((unsigned int) rel->r_index[0] << 16) 4908 | ((unsigned int) rel->r_index[1] << 8) 4909 | rel->r_index[2]); 4910 r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG)); 4911 r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_BIG)); 4912 r_baserel = (0 != (rel->r_type[0] & RELOC_STD_BITS_BASEREL_BIG)); 4913 r_jmptable= (0 != (rel->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG)); 4914 r_relative= (0 != (rel->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG)); 4915 r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_BIG) 4916 >> RELOC_STD_BITS_LENGTH_SH_BIG); 4917 } 4918 else 4919 { 4920 r_index = (((unsigned int) rel->r_index[2] << 16) 4921 | ((unsigned int) rel->r_index[1] << 8) 4922 | rel->r_index[0]); 4923 r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE)); 4924 r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); 4925 r_baserel = (0 != (rel->r_type[0] 4926 & RELOC_STD_BITS_BASEREL_LITTLE)); 4927 r_jmptable= (0 != (rel->r_type[0] 4928 & RELOC_STD_BITS_JMPTABLE_LITTLE)); 4929 r_relative= (0 != (rel->r_type[0] 4930 & RELOC_STD_BITS_RELATIVE_LITTLE)); 4931 r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE) 4932 >> RELOC_STD_BITS_LENGTH_SH_LITTLE); 4933 } 4934 4935 howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel 4936 + 16 * r_jmptable + 32 * r_relative); 4937 BFD_ASSERT (howto_idx < TABLE_SIZE (howto_table_std)); 4938 howto = howto_table_std + howto_idx; 4939 } 4940#endif 4941 4942 if (relocatable) 4943 { 4944 /* We are generating a relocatable output file, and must 4945 modify the reloc accordingly. */ 4946 if (r_extern) 4947 { 4948 /* If we know the symbol this relocation is against, 4949 convert it into a relocation against a section. This 4950 is what the native linker does. */ 4951 h = sym_hashes[r_index]; 4952 if (h != (struct aout_link_hash_entry *) NULL 4953 && (h->root.type == bfd_link_hash_defined 4954 || h->root.type == bfd_link_hash_defweak)) 4955 { 4956 asection *output_section; 4957 4958 /* Change the r_extern value. */ 4959 if (bfd_header_big_endian (output_bfd)) 4960 rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_BIG; 4961 else 4962 rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_LITTLE; 4963 4964 /* Compute a new r_index. */ 4965 output_section = h->root.u.def.section->output_section; 4966 if (output_section == obj_textsec (output_bfd)) 4967 r_index = N_TEXT; 4968 else if (output_section == obj_datasec (output_bfd)) 4969 r_index = N_DATA; 4970 else if (output_section == obj_bsssec (output_bfd)) 4971 r_index = N_BSS; 4972 else 4973 r_index = N_ABS; 4974 4975 /* Add the symbol value and the section VMA to the 4976 addend stored in the contents. */ 4977 relocation = (h->root.u.def.value 4978 + output_section->vma 4979 + h->root.u.def.section->output_offset); 4980 } 4981 else 4982 { 4983 /* We must change r_index according to the symbol 4984 map. */ 4985 r_index = symbol_map[r_index]; 4986 4987 if (r_index == -1) 4988 { 4989 if (h != NULL) 4990 { 4991 /* We decided to strip this symbol, but it 4992 turns out that we can't. Note that we 4993 lose the other and desc information here. 4994 I don't think that will ever matter for a 4995 global symbol. */ 4996 if (h->indx < 0) 4997 { 4998 h->indx = -2; 4999 h->written = FALSE; 5000 if (! aout_link_write_other_symbol (h, 5001 (PTR) finfo)) 5002 return FALSE; 5003 } 5004 r_index = h->indx; 5005 } 5006 else 5007 { 5008 const char *name; 5009 5010 name = strings + GET_WORD (input_bfd, 5011 syms[r_index].e_strx); 5012 if (! ((*finfo->info->callbacks->unattached_reloc) 5013 (finfo->info, name, input_bfd, input_section, 5014 r_addr))) 5015 return FALSE; 5016 r_index = 0; 5017 } 5018 } 5019 5020 relocation = 0; 5021 } 5022 5023 /* Write out the new r_index value. */ 5024 if (bfd_header_big_endian (output_bfd)) 5025 { 5026 rel->r_index[0] = r_index >> 16; 5027 rel->r_index[1] = r_index >> 8; 5028 rel->r_index[2] = r_index; 5029 } 5030 else 5031 { 5032 rel->r_index[2] = r_index >> 16; 5033 rel->r_index[1] = r_index >> 8; 5034 rel->r_index[0] = r_index; 5035 } 5036 } 5037 else 5038 { 5039 asection *section; 5040 5041 /* This is a relocation against a section. We must 5042 adjust by the amount that the section moved. */ 5043 section = aout_reloc_index_to_section (input_bfd, r_index); 5044 relocation = (section->output_section->vma 5045 + section->output_offset 5046 - section->vma); 5047 } 5048 5049 /* Change the address of the relocation. */ 5050 PUT_WORD (output_bfd, 5051 r_addr + input_section->output_offset, 5052 rel->r_address); 5053 5054 /* Adjust a PC relative relocation by removing the reference 5055 to the original address in the section and including the 5056 reference to the new address. */ 5057 if (r_pcrel) 5058 relocation -= (input_section->output_section->vma 5059 + input_section->output_offset 5060 - input_section->vma); 5061 5062#ifdef MY_relocatable_reloc 5063 MY_relocatable_reloc (howto, output_bfd, rel, relocation, r_addr); 5064#endif 5065 5066 if (relocation == 0) 5067 r = bfd_reloc_ok; 5068 else 5069 r = MY_relocate_contents (howto, 5070 input_bfd, relocation, 5071 contents + r_addr); 5072 } 5073 else 5074 { 5075 bfd_boolean hundef; 5076 5077 /* We are generating an executable, and must do a full 5078 relocation. */ 5079 hundef = FALSE; 5080 5081 if (r_extern) 5082 { 5083 h = sym_hashes[r_index]; 5084 5085 if (h != (struct aout_link_hash_entry *) NULL 5086 && (h->root.type == bfd_link_hash_defined 5087 || h->root.type == bfd_link_hash_defweak)) 5088 { 5089 relocation = (h->root.u.def.value 5090 + h->root.u.def.section->output_section->vma 5091 + h->root.u.def.section->output_offset); 5092 } 5093 else if (h != (struct aout_link_hash_entry *) NULL 5094 && h->root.type == bfd_link_hash_undefweak) 5095 relocation = 0; 5096 else 5097 { 5098 hundef = TRUE; 5099 relocation = 0; 5100 } 5101 } 5102 else 5103 { 5104 asection *section; 5105 5106 section = aout_reloc_index_to_section (input_bfd, r_index); 5107 relocation = (section->output_section->vma 5108 + section->output_offset 5109 - section->vma); 5110 if (r_pcrel) 5111 relocation += input_section->vma; 5112 } 5113 5114 if (check_dynamic_reloc != NULL) 5115 { 5116 bfd_boolean skip; 5117 5118 if (! ((*check_dynamic_reloc) 5119 (finfo->info, input_bfd, input_section, h, 5120 (PTR) rel, contents, &skip, &relocation))) 5121 return FALSE; 5122 if (skip) 5123 continue; 5124 } 5125 5126 /* Now warn if a global symbol is undefined. We could not 5127 do this earlier, because check_dynamic_reloc might want 5128 to skip this reloc. */ 5129 if (hundef && ! finfo->info->shared && ! r_baserel) 5130 { 5131 const char *name; 5132 5133 if (h != NULL) 5134 name = h->root.root.string; 5135 else 5136 name = strings + GET_WORD (input_bfd, syms[r_index].e_strx); 5137 if (! ((*finfo->info->callbacks->undefined_symbol) 5138 (finfo->info, name, input_bfd, input_section, 5139 r_addr, TRUE))) 5140 return FALSE; 5141 } 5142 5143 r = MY_final_link_relocate (howto, 5144 input_bfd, input_section, 5145 contents, r_addr, relocation, 5146 (bfd_vma) 0); 5147 } 5148 5149 if (r != bfd_reloc_ok) 5150 { 5151 switch (r) 5152 { 5153 default: 5154 case bfd_reloc_outofrange: 5155 abort (); 5156 case bfd_reloc_overflow: 5157 { 5158 const char *name; 5159 5160 if (h != NULL) 5161 name = h->root.root.string; 5162 else if (r_extern) 5163 name = strings + GET_WORD (input_bfd, 5164 syms[r_index].e_strx); 5165 else 5166 { 5167 asection *s; 5168 5169 s = aout_reloc_index_to_section (input_bfd, r_index); 5170 name = bfd_section_name (input_bfd, s); 5171 } 5172 if (! ((*finfo->info->callbacks->reloc_overflow) 5173 (finfo->info, name, howto->name, 5174 (bfd_vma) 0, input_bfd, input_section, r_addr))) 5175 return FALSE; 5176 } 5177 break; 5178 } 5179 } 5180 } 5181 5182 return TRUE; 5183} 5184 5185/* Relocate an a.out section using extended a.out relocs. */ 5186 5187static bfd_boolean 5188aout_link_input_section_ext (finfo, input_bfd, input_section, relocs, 5189 rel_size, contents) 5190 struct aout_final_link_info *finfo; 5191 bfd *input_bfd; 5192 asection *input_section; 5193 struct reloc_ext_external *relocs; 5194 bfd_size_type rel_size; 5195 bfd_byte *contents; 5196{ 5197 bfd_boolean (*check_dynamic_reloc) 5198 PARAMS ((struct bfd_link_info *, bfd *, asection *, 5199 struct aout_link_hash_entry *, PTR, bfd_byte *, bfd_boolean *, 5200 bfd_vma *)); 5201 bfd *output_bfd; 5202 bfd_boolean relocatable; 5203 struct external_nlist *syms; 5204 char *strings; 5205 struct aout_link_hash_entry **sym_hashes; 5206 int *symbol_map; 5207 bfd_size_type reloc_count; 5208 register struct reloc_ext_external *rel; 5209 struct reloc_ext_external *rel_end; 5210 5211 output_bfd = finfo->output_bfd; 5212 check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc; 5213 5214 BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_EXT_SIZE); 5215 BFD_ASSERT (input_bfd->xvec->header_byteorder 5216 == output_bfd->xvec->header_byteorder); 5217 5218 relocatable = finfo->info->relocatable; 5219 syms = obj_aout_external_syms (input_bfd); 5220 strings = obj_aout_external_strings (input_bfd); 5221 sym_hashes = obj_aout_sym_hashes (input_bfd); 5222 symbol_map = finfo->symbol_map; 5223 5224 reloc_count = rel_size / RELOC_EXT_SIZE; 5225 rel = relocs; 5226 rel_end = rel + reloc_count; 5227 for (; rel < rel_end; rel++) 5228 { 5229 bfd_vma r_addr; 5230 int r_index; 5231 int r_extern; 5232 unsigned int r_type; 5233 bfd_vma r_addend; 5234 struct aout_link_hash_entry *h = NULL; 5235 asection *r_section = NULL; 5236 bfd_vma relocation; 5237 5238 r_addr = GET_SWORD (input_bfd, rel->r_address); 5239 5240 if (bfd_header_big_endian (input_bfd)) 5241 { 5242 r_index = (((unsigned int) rel->r_index[0] << 16) 5243 | ((unsigned int) rel->r_index[1] << 8) 5244 | rel->r_index[2]); 5245 r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG)); 5246 r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) 5247 >> RELOC_EXT_BITS_TYPE_SH_BIG); 5248 } 5249 else 5250 { 5251 r_index = (((unsigned int) rel->r_index[2] << 16) 5252 | ((unsigned int) rel->r_index[1] << 8) 5253 | rel->r_index[0]); 5254 r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE)); 5255 r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) 5256 >> RELOC_EXT_BITS_TYPE_SH_LITTLE); 5257 } 5258 5259 r_addend = GET_SWORD (input_bfd, rel->r_addend); 5260 5261 BFD_ASSERT (r_type < TABLE_SIZE (howto_table_ext)); 5262 5263 if (relocatable) 5264 { 5265 /* We are generating a relocatable output file, and must 5266 modify the reloc accordingly. */ 5267 if (r_extern 5268 || r_type == (unsigned int) RELOC_BASE10 5269 || r_type == (unsigned int) RELOC_BASE13 5270 || r_type == (unsigned int) RELOC_BASE22) 5271 { 5272 /* If we know the symbol this relocation is against, 5273 convert it into a relocation against a section. This 5274 is what the native linker does. */ 5275 if (r_type == (unsigned int) RELOC_BASE10 5276 || r_type == (unsigned int) RELOC_BASE13 5277 || r_type == (unsigned int) RELOC_BASE22) 5278 h = NULL; 5279 else 5280 h = sym_hashes[r_index]; 5281 if (h != (struct aout_link_hash_entry *) NULL 5282 && (h->root.type == bfd_link_hash_defined 5283 || h->root.type == bfd_link_hash_defweak)) 5284 { 5285 asection *output_section; 5286 5287 /* Change the r_extern value. */ 5288 if (bfd_header_big_endian (output_bfd)) 5289 rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_BIG; 5290 else 5291 rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_LITTLE; 5292 5293 /* Compute a new r_index. */ 5294 output_section = h->root.u.def.section->output_section; 5295 if (output_section == obj_textsec (output_bfd)) 5296 r_index = N_TEXT; 5297 else if (output_section == obj_datasec (output_bfd)) 5298 r_index = N_DATA; 5299 else if (output_section == obj_bsssec (output_bfd)) 5300 r_index = N_BSS; 5301 else 5302 r_index = N_ABS; 5303 5304 /* Add the symbol value and the section VMA to the 5305 addend. */ 5306 relocation = (h->root.u.def.value 5307 + output_section->vma 5308 + h->root.u.def.section->output_offset); 5309 5310 /* Now RELOCATION is the VMA of the final 5311 destination. If this is a PC relative reloc, 5312 then ADDEND is the negative of the source VMA. 5313 We want to set ADDEND to the difference between 5314 the destination VMA and the source VMA, which 5315 means we must adjust RELOCATION by the change in 5316 the source VMA. This is done below. */ 5317 } 5318 else 5319 { 5320 /* We must change r_index according to the symbol 5321 map. */ 5322 r_index = symbol_map[r_index]; 5323 5324 if (r_index == -1) 5325 { 5326 if (h != NULL) 5327 { 5328 /* We decided to strip this symbol, but it 5329 turns out that we can't. Note that we 5330 lose the other and desc information here. 5331 I don't think that will ever matter for a 5332 global symbol. */ 5333 if (h->indx < 0) 5334 { 5335 h->indx = -2; 5336 h->written = FALSE; 5337 if (! aout_link_write_other_symbol (h, 5338 (PTR) finfo)) 5339 return FALSE; 5340 } 5341 r_index = h->indx; 5342 } 5343 else 5344 { 5345 const char *name; 5346 5347 name = strings + GET_WORD (input_bfd, 5348 syms[r_index].e_strx); 5349 if (! ((*finfo->info->callbacks->unattached_reloc) 5350 (finfo->info, name, input_bfd, input_section, 5351 r_addr))) 5352 return FALSE; 5353 r_index = 0; 5354 } 5355 } 5356 5357 relocation = 0; 5358 5359 /* If this is a PC relative reloc, then the addend 5360 is the negative of the source VMA. We must 5361 adjust it by the change in the source VMA. This 5362 is done below. */ 5363 } 5364 5365 /* Write out the new r_index value. */ 5366 if (bfd_header_big_endian (output_bfd)) 5367 { 5368 rel->r_index[0] = r_index >> 16; 5369 rel->r_index[1] = r_index >> 8; 5370 rel->r_index[2] = r_index; 5371 } 5372 else 5373 { 5374 rel->r_index[2] = r_index >> 16; 5375 rel->r_index[1] = r_index >> 8; 5376 rel->r_index[0] = r_index; 5377 } 5378 } 5379 else 5380 { 5381 /* This is a relocation against a section. We must 5382 adjust by the amount that the section moved. */ 5383 r_section = aout_reloc_index_to_section (input_bfd, r_index); 5384 relocation = (r_section->output_section->vma 5385 + r_section->output_offset 5386 - r_section->vma); 5387 5388 /* If this is a PC relative reloc, then the addend is 5389 the difference in VMA between the destination and the 5390 source. We have just adjusted for the change in VMA 5391 of the destination, so we must also adjust by the 5392 change in VMA of the source. This is done below. */ 5393 } 5394 5395 /* As described above, we must always adjust a PC relative 5396 reloc by the change in VMA of the source. However, if 5397 pcrel_offset is set, then the addend does not include the 5398 location within the section, in which case we don't need 5399 to adjust anything. */ 5400 if (howto_table_ext[r_type].pc_relative 5401 && ! howto_table_ext[r_type].pcrel_offset) 5402 relocation -= (input_section->output_section->vma 5403 + input_section->output_offset 5404 - input_section->vma); 5405 5406 /* Change the addend if necessary. */ 5407 if (relocation != 0) 5408 PUT_WORD (output_bfd, r_addend + relocation, rel->r_addend); 5409 5410 /* Change the address of the relocation. */ 5411 PUT_WORD (output_bfd, 5412 r_addr + input_section->output_offset, 5413 rel->r_address); 5414 } 5415 else 5416 { 5417 bfd_boolean hundef; 5418 bfd_reloc_status_type r; 5419 5420 /* We are generating an executable, and must do a full 5421 relocation. */ 5422 hundef = FALSE; 5423 5424 if (r_extern) 5425 { 5426 h = sym_hashes[r_index]; 5427 5428 if (h != (struct aout_link_hash_entry *) NULL 5429 && (h->root.type == bfd_link_hash_defined 5430 || h->root.type == bfd_link_hash_defweak)) 5431 { 5432 relocation = (h->root.u.def.value 5433 + h->root.u.def.section->output_section->vma 5434 + h->root.u.def.section->output_offset); 5435 } 5436 else if (h != (struct aout_link_hash_entry *) NULL 5437 && h->root.type == bfd_link_hash_undefweak) 5438 relocation = 0; 5439 else 5440 { 5441 hundef = TRUE; 5442 relocation = 0; 5443 } 5444 } 5445 else if (r_type == (unsigned int) RELOC_BASE10 5446 || r_type == (unsigned int) RELOC_BASE13 5447 || r_type == (unsigned int) RELOC_BASE22) 5448 { 5449 struct external_nlist *sym; 5450 int type; 5451 5452 /* For base relative relocs, r_index is always an index 5453 into the symbol table, even if r_extern is 0. */ 5454 sym = syms + r_index; 5455 type = H_GET_8 (input_bfd, sym->e_type); 5456 if ((type & N_TYPE) == N_TEXT 5457 || type == N_WEAKT) 5458 r_section = obj_textsec (input_bfd); 5459 else if ((type & N_TYPE) == N_DATA 5460 || type == N_WEAKD) 5461 r_section = obj_datasec (input_bfd); 5462 else if ((type & N_TYPE) == N_BSS 5463 || type == N_WEAKB) 5464 r_section = obj_bsssec (input_bfd); 5465 else if ((type & N_TYPE) == N_ABS 5466 || type == N_WEAKA) 5467 r_section = bfd_abs_section_ptr; 5468 else 5469 abort (); 5470 relocation = (r_section->output_section->vma 5471 + r_section->output_offset 5472 + (GET_WORD (input_bfd, sym->e_value) 5473 - r_section->vma)); 5474 } 5475 else 5476 { 5477 r_section = aout_reloc_index_to_section (input_bfd, r_index); 5478 5479 /* If this is a PC relative reloc, then R_ADDEND is the 5480 difference between the two vmas, or 5481 old_dest_sec + old_dest_off - (old_src_sec + old_src_off) 5482 where 5483 old_dest_sec == section->vma 5484 and 5485 old_src_sec == input_section->vma 5486 and 5487 old_src_off == r_addr 5488 5489 _bfd_final_link_relocate expects RELOCATION + 5490 R_ADDEND to be the VMA of the destination minus 5491 r_addr (the minus r_addr is because this relocation 5492 is not pcrel_offset, which is a bit confusing and 5493 should, perhaps, be changed), or 5494 new_dest_sec 5495 where 5496 new_dest_sec == output_section->vma + output_offset 5497 We arrange for this to happen by setting RELOCATION to 5498 new_dest_sec + old_src_sec - old_dest_sec 5499 5500 If this is not a PC relative reloc, then R_ADDEND is 5501 simply the VMA of the destination, so we set 5502 RELOCATION to the change in the destination VMA, or 5503 new_dest_sec - old_dest_sec 5504 */ 5505 relocation = (r_section->output_section->vma 5506 + r_section->output_offset 5507 - r_section->vma); 5508 if (howto_table_ext[r_type].pc_relative) 5509 relocation += input_section->vma; 5510 } 5511 5512 if (check_dynamic_reloc != NULL) 5513 { 5514 bfd_boolean skip; 5515 5516 if (! ((*check_dynamic_reloc) 5517 (finfo->info, input_bfd, input_section, h, 5518 (PTR) rel, contents, &skip, &relocation))) 5519 return FALSE; 5520 if (skip) 5521 continue; 5522 } 5523 5524 /* Now warn if a global symbol is undefined. We could not 5525 do this earlier, because check_dynamic_reloc might want 5526 to skip this reloc. */ 5527 if (hundef 5528 && ! finfo->info->shared 5529 && r_type != (unsigned int) RELOC_BASE10 5530 && r_type != (unsigned int) RELOC_BASE13 5531 && r_type != (unsigned int) RELOC_BASE22) 5532 { 5533 const char *name; 5534 5535 if (h != NULL) 5536 name = h->root.root.string; 5537 else 5538 name = strings + GET_WORD (input_bfd, syms[r_index].e_strx); 5539 if (! ((*finfo->info->callbacks->undefined_symbol) 5540 (finfo->info, name, input_bfd, input_section, 5541 r_addr, TRUE))) 5542 return FALSE; 5543 } 5544 5545 if (r_type != (unsigned int) RELOC_SPARC_REV32) 5546 r = MY_final_link_relocate (howto_table_ext + r_type, 5547 input_bfd, input_section, 5548 contents, r_addr, relocation, 5549 r_addend); 5550 else 5551 { 5552 bfd_vma x; 5553 5554 x = bfd_get_32 (input_bfd, contents + r_addr); 5555 x = x + relocation + r_addend; 5556 bfd_putl32 (/*input_bfd,*/ x, contents + r_addr); 5557 r = bfd_reloc_ok; 5558 } 5559 5560 if (r != bfd_reloc_ok) 5561 { 5562 switch (r) 5563 { 5564 default: 5565 case bfd_reloc_outofrange: 5566 abort (); 5567 case bfd_reloc_overflow: 5568 { 5569 const char *name; 5570 5571 if (h != NULL) 5572 name = h->root.root.string; 5573 else if (r_extern 5574 || r_type == (unsigned int) RELOC_BASE10 5575 || r_type == (unsigned int) RELOC_BASE13 5576 || r_type == (unsigned int) RELOC_BASE22) 5577 name = strings + GET_WORD (input_bfd, 5578 syms[r_index].e_strx); 5579 else 5580 { 5581 asection *s; 5582 5583 s = aout_reloc_index_to_section (input_bfd, r_index); 5584 name = bfd_section_name (input_bfd, s); 5585 } 5586 if (! ((*finfo->info->callbacks->reloc_overflow) 5587 (finfo->info, name, howto_table_ext[r_type].name, 5588 r_addend, input_bfd, input_section, r_addr))) 5589 return FALSE; 5590 } 5591 break; 5592 } 5593 } 5594 } 5595 } 5596 5597 return TRUE; 5598} 5599 5600/* Handle a link order which is supposed to generate a reloc. */ 5601 5602static bfd_boolean 5603aout_link_reloc_link_order (finfo, o, p) 5604 struct aout_final_link_info *finfo; 5605 asection *o; 5606 struct bfd_link_order *p; 5607{ 5608 struct bfd_link_order_reloc *pr; 5609 int r_index; 5610 int r_extern; 5611 reloc_howto_type *howto; 5612 file_ptr *reloff_ptr = NULL; 5613 struct reloc_std_external srel; 5614 struct reloc_ext_external erel; 5615 PTR rel_ptr; 5616 bfd_size_type amt; 5617 5618 pr = p->u.reloc.p; 5619 5620 if (p->type == bfd_section_reloc_link_order) 5621 { 5622 r_extern = 0; 5623 if (bfd_is_abs_section (pr->u.section)) 5624 r_index = N_ABS | N_EXT; 5625 else 5626 { 5627 BFD_ASSERT (pr->u.section->owner == finfo->output_bfd); 5628 r_index = pr->u.section->target_index; 5629 } 5630 } 5631 else 5632 { 5633 struct aout_link_hash_entry *h; 5634 5635 BFD_ASSERT (p->type == bfd_symbol_reloc_link_order); 5636 r_extern = 1; 5637 h = ((struct aout_link_hash_entry *) 5638 bfd_wrapped_link_hash_lookup (finfo->output_bfd, finfo->info, 5639 pr->u.name, FALSE, FALSE, TRUE)); 5640 if (h != (struct aout_link_hash_entry *) NULL 5641 && h->indx >= 0) 5642 r_index = h->indx; 5643 else if (h != NULL) 5644 { 5645 /* We decided to strip this symbol, but it turns out that we 5646 can't. Note that we lose the other and desc information 5647 here. I don't think that will ever matter for a global 5648 symbol. */ 5649 h->indx = -2; 5650 h->written = FALSE; 5651 if (! aout_link_write_other_symbol (h, (PTR) finfo)) 5652 return FALSE; 5653 r_index = h->indx; 5654 } 5655 else 5656 { 5657 if (! ((*finfo->info->callbacks->unattached_reloc) 5658 (finfo->info, pr->u.name, (bfd *) NULL, 5659 (asection *) NULL, (bfd_vma) 0))) 5660 return FALSE; 5661 r_index = 0; 5662 } 5663 } 5664 5665 howto = bfd_reloc_type_lookup (finfo->output_bfd, pr->reloc); 5666 if (howto == 0) 5667 { 5668 bfd_set_error (bfd_error_bad_value); 5669 return FALSE; 5670 } 5671 5672 if (o == obj_textsec (finfo->output_bfd)) 5673 reloff_ptr = &finfo->treloff; 5674 else if (o == obj_datasec (finfo->output_bfd)) 5675 reloff_ptr = &finfo->dreloff; 5676 else 5677 abort (); 5678 5679 if (obj_reloc_entry_size (finfo->output_bfd) == RELOC_STD_SIZE) 5680 { 5681#ifdef MY_put_reloc 5682 MY_put_reloc (finfo->output_bfd, r_extern, r_index, p->offset, howto, 5683 &srel); 5684#else 5685 { 5686 int r_pcrel; 5687 int r_baserel; 5688 int r_jmptable; 5689 int r_relative; 5690 int r_length; 5691 5692 r_pcrel = (int) howto->pc_relative; 5693 r_baserel = (howto->type & 8) != 0; 5694 r_jmptable = (howto->type & 16) != 0; 5695 r_relative = (howto->type & 32) != 0; 5696 r_length = howto->size; 5697 5698 PUT_WORD (finfo->output_bfd, p->offset, srel.r_address); 5699 if (bfd_header_big_endian (finfo->output_bfd)) 5700 { 5701 srel.r_index[0] = r_index >> 16; 5702 srel.r_index[1] = r_index >> 8; 5703 srel.r_index[2] = r_index; 5704 srel.r_type[0] = 5705 ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0) 5706 | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0) 5707 | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0) 5708 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0) 5709 | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0) 5710 | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG)); 5711 } 5712 else 5713 { 5714 srel.r_index[2] = r_index >> 16; 5715 srel.r_index[1] = r_index >> 8; 5716 srel.r_index[0] = r_index; 5717 srel.r_type[0] = 5718 ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0) 5719 | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0) 5720 | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0) 5721 | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0) 5722 | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0) 5723 | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE)); 5724 } 5725 } 5726#endif 5727 rel_ptr = (PTR) &srel; 5728 5729 /* We have to write the addend into the object file, since 5730 standard a.out relocs are in place. It would be more 5731 reliable if we had the current contents of the file here, 5732 rather than assuming zeroes, but we can't read the file since 5733 it was opened using bfd_openw. */ 5734 if (pr->addend != 0) 5735 { 5736 bfd_size_type size; 5737 bfd_reloc_status_type r; 5738 bfd_byte *buf; 5739 bfd_boolean ok; 5740 5741 size = bfd_get_reloc_size (howto); 5742 buf = (bfd_byte *) bfd_zmalloc (size); 5743 if (buf == (bfd_byte *) NULL) 5744 return FALSE; 5745 r = MY_relocate_contents (howto, finfo->output_bfd, 5746 (bfd_vma) pr->addend, buf); 5747 switch (r) 5748 { 5749 case bfd_reloc_ok: 5750 break; 5751 default: 5752 case bfd_reloc_outofrange: 5753 abort (); 5754 case bfd_reloc_overflow: 5755 if (! ((*finfo->info->callbacks->reloc_overflow) 5756 (finfo->info, 5757 (p->type == bfd_section_reloc_link_order 5758 ? bfd_section_name (finfo->output_bfd, 5759 pr->u.section) 5760 : pr->u.name), 5761 howto->name, pr->addend, (bfd *) NULL, 5762 (asection *) NULL, (bfd_vma) 0))) 5763 { 5764 free (buf); 5765 return FALSE; 5766 } 5767 break; 5768 } 5769 ok = bfd_set_section_contents (finfo->output_bfd, o, (PTR) buf, 5770 (file_ptr) p->offset, size); 5771 free (buf); 5772 if (! ok) 5773 return FALSE; 5774 } 5775 } 5776 else 5777 { 5778#ifdef MY_put_ext_reloc 5779 MY_put_ext_reloc (finfo->output_bfd, r_extern, r_index, p->offset, 5780 howto, &erel, pr->addend); 5781#else 5782 PUT_WORD (finfo->output_bfd, p->offset, erel.r_address); 5783 5784 if (bfd_header_big_endian (finfo->output_bfd)) 5785 { 5786 erel.r_index[0] = r_index >> 16; 5787 erel.r_index[1] = r_index >> 8; 5788 erel.r_index[2] = r_index; 5789 erel.r_type[0] = 5790 ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0) 5791 | (howto->type << RELOC_EXT_BITS_TYPE_SH_BIG)); 5792 } 5793 else 5794 { 5795 erel.r_index[2] = r_index >> 16; 5796 erel.r_index[1] = r_index >> 8; 5797 erel.r_index[0] = r_index; 5798 erel.r_type[0] = 5799 (r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0) 5800 | (howto->type << RELOC_EXT_BITS_TYPE_SH_LITTLE); 5801 } 5802 5803 PUT_WORD (finfo->output_bfd, (bfd_vma) pr->addend, erel.r_addend); 5804#endif /* MY_put_ext_reloc */ 5805 5806 rel_ptr = (PTR) &erel; 5807 } 5808 5809 amt = obj_reloc_entry_size (finfo->output_bfd); 5810 if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0 5811 || bfd_bwrite (rel_ptr, amt, finfo->output_bfd) != amt) 5812 return FALSE; 5813 5814 *reloff_ptr += obj_reloc_entry_size (finfo->output_bfd); 5815 5816 /* Assert that the relocs have not run into the symbols, and that n 5817 the text relocs have not run into the data relocs. */ 5818 BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd) 5819 && (reloff_ptr != &finfo->treloff 5820 || (*reloff_ptr 5821 <= obj_datasec (finfo->output_bfd)->rel_filepos))); 5822 5823 return TRUE; 5824} 5825