| 1 | /* BFD semi-generic back-end for a.out binaries |
| 2 | Copyright (C) 1990-1991 Free Software Foundation, Inc. |
| 3 | Written by Cygnus Support. |
| 4 | |
| 5 | This file is part of BFD, the Binary File Descriptor library. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 2 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ |
| 20 | |
| 21 | /* |
| 22 | SECTION |
| 23 | a.out backends |
| 24 | |
| 25 | |
| 26 | DESCRIPTION |
| 27 | |
| 28 | BFD supports a number of different flavours of a.out format, |
| 29 | though the major differences are only the sizes of the |
| 30 | structures on disk, and the shape of the relocation |
| 31 | information. |
| 32 | |
| 33 | The support is split into a basic support file @code{aoutx.h} |
| 34 | and other files which derive functions from the base. One |
| 35 | derivation file is @code{aoutf1.h} (for a.out flavour 1), and |
| 36 | adds to the basic a.out functions support for sun3, sun4, 386 |
| 37 | and 29k a.out files, to create a target jump vector for a |
| 38 | specific target. |
| 39 | |
| 40 | This information is further split out into more specific files |
| 41 | for each machine, including @code{sunos.c} for sun3 and sun4, |
| 42 | @code{newsos3.c} for the Sony NEWS, and @code{demo64.c} for a |
| 43 | demonstration of a 64 bit a.out format. |
| 44 | |
| 45 | The base file @code{aoutx.h} defines general mechanisms for |
| 46 | reading and writing records to and from disk, and various |
| 47 | other methods which BFD requires. It is included by |
| 48 | @code{aout32.c} and @code{aout64.c} to form the names |
| 49 | aout_32_swap_exec_header_in, aout_64_swap_exec_header_in, etc. |
| 50 | |
| 51 | As an example, this is what goes on to make the back end for a |
| 52 | sun4, from aout32.c |
| 53 | |
| 54 | | #define ARCH_SIZE 32 |
| 55 | | #include "aoutx.h" |
| 56 | |
| 57 | Which exports names: |
| 58 | |
| 59 | | ... |
| 60 | | aout_32_canonicalize_reloc |
| 61 | | aout_32_find_nearest_line |
| 62 | | aout_32_get_lineno |
| 63 | | aout_32_get_reloc_upper_bound |
| 64 | | ... |
| 65 | |
| 66 | from sunos.c |
| 67 | |
| 68 | | #define ARCH 32 |
| 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 aout32.c, and produces the jump vector |
| 74 | |
| 75 | | sunos_big_vec |
| 76 | |
| 77 | The 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 <<../include/sys/h-XXX.h>> (for your host). These |
| 97 | values, plus the structures and macros defined in <<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 <<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 <<config/mt-XXX>> file, and modify configure.in to use the |
| 106 | <<mt-XXX>> file (by setting "<<bfd_target=XXX>>") when your |
| 107 | configuration is selected. |
| 108 | |
| 109 | */ |
| 110 | |
| 111 | /* Some assumptions: |
| 112 | * Any BFD with D_PAGED set is ZMAGIC, and vice versa. |
| 113 | Doesn't matter what the setting of WP_TEXT is on output, but it'll |
| 114 | get set on input. |
| 115 | * Any BFD with D_PAGED clear and WP_TEXT set is NMAGIC. |
| 116 | * Any BFD with both flags clear is OMAGIC. |
| 117 | (Just want to make these explicit, so the conditions tested in this |
| 118 | file make sense if you're more familiar with a.out than with BFD.) */ |
| 119 | |
| 120 | #define KEEPIT flags |
| 121 | #define KEEPITTYPE int |
| 122 | |
| 123 | #include "bfd.h" |
| 124 | #include <sysdep.h> |
| 125 | #include <ansidecl.h> |
| 126 | |
| 127 | struct external_exec; |
| 128 | #include "libaout.h" |
| 129 | #include "libbfd.h" |
| 130 | #include "aout/aout64.h" |
| 131 | #include "aout/stab_gnu.h" |
| 132 | #include "aout/ar.h" |
| 133 | |
| 134 | extern void (*bfd_error_trap)(); |
| 135 | |
| 136 | /* |
| 137 | SUBSECTION |
| 138 | relocations |
| 139 | |
| 140 | DESCRIPTION |
| 141 | The file @code{aoutx.h} caters for both the @emph{standard} |
| 142 | and @emph{extended} forms of a.out relocation records. |
| 143 | |
| 144 | The standard records are characterised by containing only an |
| 145 | address, a symbol index and a type field. The extended records |
| 146 | (used on 29ks and sparcs) also have a full integer for an |
| 147 | addend. |
| 148 | |
| 149 | */ |
| 150 | #define CTOR_TABLE_RELOC_IDX 2 |
| 151 | |
| 152 | #define howto_table_ext NAME(aout,ext_howto_table) |
| 153 | #define howto_table_std NAME(aout,std_howto_table) |
| 154 | |
| 155 | reloc_howto_type howto_table_ext[] = |
| 156 | { |
| 157 | HOWTO(RELOC_8, 0, 0, 8, false, 0, true, true,0,"8", false, 0,0x000000ff, false), |
| 158 | HOWTO(RELOC_16, 0, 1, 16, false, 0, true, true,0,"16", false, 0,0x0000ffff, false), |
| 159 | HOWTO(RELOC_32, 0, 2, 32, false, 0, true, true,0,"32", false, 0,0xffffffff, false), |
| 160 | HOWTO(RELOC_DISP8, 0, 0, 8, true, 0, false, true,0,"DISP8", false, 0,0x000000ff, false), |
| 161 | HOWTO(RELOC_DISP16, 0, 1, 16, true, 0, false, true,0,"DISP16", false, 0,0x0000ffff, false), |
| 162 | HOWTO(RELOC_DISP32, 0, 2, 32, true, 0, false, true,0,"DISP32", false, 0,0xffffffff, false), |
| 163 | HOWTO(RELOC_WDISP30,2, 2, 30, true, 0, false, true,0,"WDISP30", false, 0,0x3fffffff, false), |
| 164 | HOWTO(RELOC_WDISP22,2, 2, 22, true, 0, false, true,0,"WDISP22", false, 0,0x003fffff, false), |
| 165 | HOWTO(RELOC_HI22, 10, 2, 22, false, 0, false, true,0,"HI22", false, 0,0x003fffff, false), |
| 166 | HOWTO(RELOC_22, 0, 2, 22, false, 0, false, true,0,"22", false, 0,0x003fffff, false), |
| 167 | HOWTO(RELOC_13, 0, 2, 13, false, 0, false, true,0,"13", false, 0,0x00001fff, false), |
| 168 | HOWTO(RELOC_LO10, 0, 2, 10, false, 0, false, true,0,"LO10", false, 0,0x000003ff, false), |
| 169 | HOWTO(RELOC_SFA_BASE,0, 2, 32, false, 0, false, true,0,"SFA_BASE", false, 0,0xffffffff, false), |
| 170 | HOWTO(RELOC_SFA_OFF13,0,2, 32, false, 0, false, true,0,"SFA_OFF13",false, 0,0xffffffff, false), |
| 171 | HOWTO(RELOC_BASE10, 0, 2, 16, false, 0, false, true,0,"BASE10", false, 0,0x0000ffff, false), |
| 172 | HOWTO(RELOC_BASE13, 0, 2, 13, false, 0, false, true,0,"BASE13", false, 0,0x00001fff, false), |
| 173 | HOWTO(RELOC_BASE22, 0, 2, 0, false, 0, false, true,0,"BASE22", false, 0,0x00000000, false), |
| 174 | HOWTO(RELOC_PC10, 0, 2, 10, false, 0, false, true,0,"PC10", false, 0,0x000003ff, false), |
| 175 | HOWTO(RELOC_PC22, 0, 2, 22, false, 0, false, true,0,"PC22", false, 0,0x003fffff, false), |
| 176 | HOWTO(RELOC_JMP_TBL,0, 2, 32, false, 0, false, true,0,"JMP_TBL", false, 0,0xffffffff, false), |
| 177 | HOWTO(RELOC_SEGOFF16,0, 2, 0, false, 0, false, true,0,"SEGOFF16", false, 0,0x00000000, false), |
| 178 | HOWTO(RELOC_GLOB_DAT,0, 2, 0, false, 0, false, true,0,"GLOB_DAT", false, 0,0x00000000, false), |
| 179 | HOWTO(RELOC_JMP_SLOT,0, 2, 0, false, 0, false, true,0,"JMP_SLOT", false, 0,0x00000000, false), |
| 180 | HOWTO(RELOC_RELATIVE,0, 2, 0, false, 0, false, true,0,"RELATIVE", false, 0,0x00000000, false), |
| 181 | }; |
| 182 | |
| 183 | /* Convert standard reloc records to "arelent" format (incl byte swap). */ |
| 184 | |
| 185 | reloc_howto_type howto_table_std[] = { |
| 186 | /* type rs size bsz pcrel bitpos abs ovrf sf name part_inpl readmask setmask pcdone */ |
| 187 | HOWTO( 0, 0, 0, 8, false, 0, true, true,0,"8", true, 0x000000ff,0x000000ff, false), |
| 188 | HOWTO( 1, 0, 1, 16, false, 0, true, true,0,"16", true, 0x0000ffff,0x0000ffff, false), |
| 189 | HOWTO( 2, 0, 2, 32, false, 0, true, true,0,"32", true, 0xffffffff,0xffffffff, false), |
| 190 | HOWTO( 3, 0, 3, 64, false, 0, true, true,0,"64", true, 0xdeaddead,0xdeaddead, false), |
| 191 | HOWTO( 4, 0, 0, 8, true, 0, false, true,0,"DISP8", true, 0x000000ff,0x000000ff, false), |
| 192 | HOWTO( 5, 0, 1, 16, true, 0, false, true,0,"DISP16", true, 0x0000ffff,0x0000ffff, false), |
| 193 | HOWTO( 6, 0, 2, 32, true, 0, false, true,0,"DISP32", true, 0xffffffff,0xffffffff, false), |
| 194 | HOWTO( 7, 0, 3, 64, true, 0, false, true,0,"DISP64", true, 0xfeedface,0xfeedface, false), |
| 195 | }; |
| 196 | |
| 197 | CONST struct reloc_howto_struct * |
| 198 | DEFUN(NAME(aout,reloc_type_lookup),(abfd,code), |
| 199 | bfd *abfd AND |
| 200 | bfd_reloc_code_real_type code) |
| 201 | { |
| 202 | #define EXT(i,j) case i: return &howto_table_ext[j] |
| 203 | #define STD(i,j) case i: return &howto_table_std[j] |
| 204 | int ext = obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE; |
| 205 | if (code == BFD_RELOC_CTOR) |
| 206 | switch (bfd_get_arch_info (abfd)->bits_per_address) |
| 207 | { |
| 208 | case 32: |
| 209 | code = BFD_RELOC_32; |
| 210 | break; |
| 211 | } |
| 212 | if (ext) |
| 213 | switch (code) |
| 214 | { |
| 215 | EXT (BFD_RELOC_32, 2); |
| 216 | EXT (BFD_RELOC_HI22, 8); |
| 217 | EXT (BFD_RELOC_LO10, 11); |
| 218 | EXT (BFD_RELOC_32_PCREL_S2, 6); |
| 219 | } |
| 220 | else |
| 221 | /* std relocs */ |
| 222 | switch (code) |
| 223 | { |
| 224 | STD (BFD_RELOC_16, 1); |
| 225 | STD (BFD_RELOC_32, 2); |
| 226 | STD (BFD_RELOC_8_PCREL, 4); |
| 227 | STD (BFD_RELOC_16_PCREL, 5); |
| 228 | STD (BFD_RELOC_32_PCREL, 6); |
| 229 | } |
| 230 | return 0; |
| 231 | } |
| 232 | |
| 233 | extern bfd_error_vector_type bfd_error_vector; |
| 234 | |
| 235 | /* |
| 236 | SUBSECTION |
| 237 | Internal Entry Points |
| 238 | |
| 239 | DESCRIPTION |
| 240 | @code{aoutx.h} exports several routines for accessing the |
| 241 | contents of an a.out file, which are gathered and exported in |
| 242 | turn by various format specific files (eg sunos.c). |
| 243 | |
| 244 | */ |
| 245 | |
| 246 | /* |
| 247 | FUNCTION |
| 248 | aout_<size>_swap_exec_header_in |
| 249 | |
| 250 | DESCRIPTION |
| 251 | Swaps the information in an executable header taken from a raw |
| 252 | byte stream memory image, into the internal exec_header |
| 253 | structure. |
| 254 | |
| 255 | EXAMPLE |
| 256 | void aout_<size>_swap_exec_header_in, |
| 257 | (bfd *abfd, |
| 258 | struct external_exec *raw_bytes, |
| 259 | struct internal_exec *execp); |
| 260 | */ |
| 261 | |
| 262 | void |
| 263 | DEFUN(NAME(aout,swap_exec_header_in),(abfd, raw_bytes, execp), |
| 264 | bfd *abfd AND |
| 265 | struct external_exec *raw_bytes AND |
| 266 | struct internal_exec *execp) |
| 267 | { |
| 268 | struct external_exec *bytes = (struct external_exec *)raw_bytes; |
| 269 | |
| 270 | /* The internal_exec structure has some fields that are unused in this |
| 271 | configuration (IE for i960), so ensure that all such uninitialized |
| 272 | fields are zero'd out. There are places where two of these structs |
| 273 | are memcmp'd, and thus the contents do matter. */ |
| 274 | memset (execp, 0, sizeof (struct internal_exec)); |
| 275 | /* Now fill in fields in the execp, from the bytes in the raw data. */ |
| 276 | execp->a_info = bfd_h_get_32 (abfd, bytes->e_info); |
| 277 | execp->a_text = GET_WORD (abfd, bytes->e_text); |
| 278 | execp->a_data = GET_WORD (abfd, bytes->e_data); |
| 279 | execp->a_bss = GET_WORD (abfd, bytes->e_bss); |
| 280 | execp->a_syms = GET_WORD (abfd, bytes->e_syms); |
| 281 | execp->a_entry = GET_WORD (abfd, bytes->e_entry); |
| 282 | execp->a_trsize = GET_WORD (abfd, bytes->e_trsize); |
| 283 | execp->a_drsize = GET_WORD (abfd, bytes->e_drsize); |
| 284 | } |
| 285 | |
| 286 | /* |
| 287 | FUNCTION |
| 288 | aout_<size>_swap_exec_header_out |
| 289 | |
| 290 | DESCRIPTION |
| 291 | Swaps the information in an internal exec header structure |
| 292 | into the supplied buffer ready for writing to disk. |
| 293 | |
| 294 | EXAMPLE |
| 295 | void aout_<size>_swap_exec_header_out |
| 296 | (bfd *abfd, |
| 297 | struct internal_exec *execp, |
| 298 | struct external_exec *raw_bytes); |
| 299 | */ |
| 300 | void |
| 301 | DEFUN(NAME(aout,swap_exec_header_out),(abfd, execp, raw_bytes), |
| 302 | bfd *abfd AND |
| 303 | struct internal_exec *execp AND |
| 304 | struct external_exec *raw_bytes) |
| 305 | { |
| 306 | struct external_exec *bytes = (struct external_exec *)raw_bytes; |
| 307 | |
| 308 | /* Now fill in fields in the raw data, from the fields in the exec struct. */ |
| 309 | bfd_h_put_32 (abfd, execp->a_info , bytes->e_info); |
| 310 | PUT_WORD (abfd, execp->a_text , bytes->e_text); |
| 311 | PUT_WORD (abfd, execp->a_data , bytes->e_data); |
| 312 | PUT_WORD (abfd, execp->a_bss , bytes->e_bss); |
| 313 | PUT_WORD (abfd, execp->a_syms , bytes->e_syms); |
| 314 | PUT_WORD (abfd, execp->a_entry , bytes->e_entry); |
| 315 | PUT_WORD (abfd, execp->a_trsize, bytes->e_trsize); |
| 316 | PUT_WORD (abfd, execp->a_drsize, bytes->e_drsize); |
| 317 | } |
| 318 | |
| 319 | |
| 320 | |
| 321 | /* |
| 322 | FUNCTION |
| 323 | aout_<size>_some_aout_object_p |
| 324 | |
| 325 | DESCRIPTION |
| 326 | Some A.OUT variant thinks that the file whose format we're |
| 327 | checking is an a.out file. Do some more checking, and set up |
| 328 | for access if it really is. Call back to the calling |
| 329 | environments "finish up" function just before returning, to |
| 330 | handle any last-minute setup. |
| 331 | |
| 332 | EXAMPLE |
| 333 | bfd_target *aout_<size>_some_aout_object_p |
| 334 | (bfd *abfd, |
| 335 | bfd_target *(*callback_to_real_object_p)()); |
| 336 | */ |
| 337 | |
| 338 | bfd_target * |
| 339 | DEFUN(NAME(aout,some_aout_object_p),(abfd, execp, callback_to_real_object_p), |
| 340 | bfd *abfd AND |
| 341 | struct internal_exec *execp AND |
| 342 | bfd_target *(*callback_to_real_object_p) ()) |
| 343 | { |
| 344 | struct aout_data_struct *rawptr, *oldrawptr; |
| 345 | bfd_target *result; |
| 346 | |
| 347 | rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, sizeof (struct aout_data_struct )); |
| 348 | if (rawptr == NULL) { |
| 349 | bfd_error = no_memory; |
| 350 | return 0; |
| 351 | } |
| 352 | |
| 353 | oldrawptr = abfd->tdata.aout_data; |
| 354 | abfd->tdata.aout_data = rawptr; |
| 355 | abfd->tdata.aout_data->a.hdr = &rawptr->e; |
| 356 | *(abfd->tdata.aout_data->a.hdr) = *execp; /* Copy in the internal_exec struct */ |
| 357 | execp = abfd->tdata.aout_data->a.hdr; |
| 358 | |
| 359 | /* Set the file flags */ |
| 360 | abfd->flags = NO_FLAGS; |
| 361 | if (execp->a_drsize || execp->a_trsize) |
| 362 | abfd->flags |= HAS_RELOC; |
| 363 | /* Setting of EXEC_P has been deferred to the bottom of this function */ |
| 364 | if (execp->a_syms) |
| 365 | abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS; |
| 366 | |
| 367 | if (N_MAGIC (*execp) == ZMAGIC) |
| 368 | { |
| 369 | abfd->flags |= D_PAGED|WP_TEXT; |
| 370 | adata(abfd).magic = z_magic; |
| 371 | } |
| 372 | else if (N_MAGIC (*execp) == NMAGIC) |
| 373 | { |
| 374 | abfd->flags |= WP_TEXT; |
| 375 | adata(abfd).magic = n_magic; |
| 376 | } |
| 377 | else |
| 378 | adata(abfd).magic = o_magic; |
| 379 | |
| 380 | bfd_get_start_address (abfd) = execp->a_entry; |
| 381 | |
| 382 | obj_aout_symbols (abfd) = (aout_symbol_type *)NULL; |
| 383 | bfd_get_symcount (abfd) = execp->a_syms / sizeof (struct external_nlist); |
| 384 | |
| 385 | /* The default relocation entry size is that of traditional V7 Unix. */ |
| 386 | obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; |
| 387 | |
| 388 | /* The default symbol entry size is that of traditional Unix. */ |
| 389 | obj_symbol_entry_size (abfd) = EXTERNAL_NLIST_SIZE; |
| 390 | |
| 391 | /* create the sections. This is raunchy, but bfd_close wants to reclaim |
| 392 | them */ |
| 393 | |
| 394 | obj_textsec (abfd) = bfd_make_section_old_way (abfd, ".text"); |
| 395 | obj_datasec (abfd) = bfd_make_section_old_way (abfd, ".data"); |
| 396 | obj_bsssec (abfd) = bfd_make_section_old_way (abfd, ".bss"); |
| 397 | |
| 398 | #if 0 |
| 399 | (void)bfd_make_section (abfd, ".text"); |
| 400 | (void)bfd_make_section (abfd, ".data"); |
| 401 | (void)bfd_make_section (abfd, ".bss"); |
| 402 | #endif |
| 403 | |
| 404 | obj_datasec (abfd)->_raw_size = execp->a_data; |
| 405 | obj_bsssec (abfd)->_raw_size = execp->a_bss; |
| 406 | |
| 407 | obj_textsec (abfd)->flags = (execp->a_trsize != 0 ? |
| 408 | (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_RELOC) : |
| 409 | (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)); |
| 410 | obj_datasec (abfd)->flags = (execp->a_drsize != 0 ? |
| 411 | (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS | SEC_RELOC) : |
| 412 | (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS)); |
| 413 | obj_bsssec (abfd)->flags = SEC_ALLOC; |
| 414 | |
| 415 | #ifdef THIS_IS_ONLY_DOCUMENTATION |
| 416 | /* The common code can't fill in these things because they depend |
| 417 | on either the start address of the text segment, the rounding |
| 418 | up of virtual addersses between segments, or the starting file |
| 419 | position of the text segment -- all of which varies among different |
| 420 | versions of a.out. */ |
| 421 | |
| 422 | /* Call back to the format-dependent code to fill in the rest of the |
| 423 | fields and do any further cleanup. Things that should be filled |
| 424 | in by the callback: */ |
| 425 | |
| 426 | struct exec *execp = exec_hdr (abfd); |
| 427 | |
| 428 | obj_textsec (abfd)->size = N_TXTSIZE(*execp); |
| 429 | obj_textsec (abfd)->raw_size = N_TXTSIZE(*execp); |
| 430 | /* data and bss are already filled in since they're so standard */ |
| 431 | |
| 432 | /* The virtual memory addresses of the sections */ |
| 433 | obj_textsec (abfd)->vma = N_TXTADDR(*execp); |
| 434 | obj_datasec (abfd)->vma = N_DATADDR(*execp); |
| 435 | obj_bsssec (abfd)->vma = N_BSSADDR(*execp); |
| 436 | |
| 437 | /* The file offsets of the sections */ |
| 438 | obj_textsec (abfd)->filepos = N_TXTOFF(*execp); |
| 439 | obj_datasec (abfd)->filepos = N_DATOFF(*execp); |
| 440 | |
| 441 | /* The file offsets of the relocation info */ |
| 442 | obj_textsec (abfd)->rel_filepos = N_TRELOFF(*execp); |
| 443 | obj_datasec (abfd)->rel_filepos = N_DRELOFF(*execp); |
| 444 | |
| 445 | /* The file offsets of the string table and symbol table. */ |
| 446 | obj_str_filepos (abfd) = N_STROFF (*execp); |
| 447 | obj_sym_filepos (abfd) = N_SYMOFF (*execp); |
| 448 | |
| 449 | /* Determine the architecture and machine type of the object file. */ |
| 450 | switch (N_MACHTYPE (*exec_hdr (abfd))) { |
| 451 | default: |
| 452 | abfd->obj_arch = bfd_arch_obscure; |
| 453 | break; |
| 454 | } |
| 455 | |
| 456 | adata(abfd)->page_size = PAGE_SIZE; |
| 457 | adata(abfd)->segment_size = SEGMENT_SIZE; |
| 458 | adata(abfd)->exec_bytes_size = EXEC_BYTES_SIZE; |
| 459 | |
| 460 | return abfd->xvec; |
| 461 | |
| 462 | /* The architecture is encoded in various ways in various a.out variants, |
| 463 | or is not encoded at all in some of them. The relocation size depends |
| 464 | on the architecture and the a.out variant. Finally, the return value |
| 465 | is the bfd_target vector in use. If an error occurs, return zero and |
| 466 | set bfd_error to the appropriate error code. |
| 467 | |
| 468 | Formats such as b.out, which have additional fields in the a.out |
| 469 | header, should cope with them in this callback as well. */ |
| 470 | #endif /* DOCUMENTATION */ |
| 471 | |
| 472 | result = (*callback_to_real_object_p)(abfd); |
| 473 | |
| 474 | /* Now that the segment addresses have been worked out, take a better |
| 475 | guess at whether the file is executable. If the entry point |
| 476 | is within the text segment, assume it is. (This makes files |
| 477 | executable even if their entry point address is 0, as long as |
| 478 | their text starts at zero.) |
| 479 | |
| 480 | At some point we should probably break down and stat the file and |
| 481 | declare it executable if (one of) its 'x' bits are on... */ |
| 482 | if ((execp->a_entry >= obj_textsec(abfd)->vma) && |
| 483 | (execp->a_entry < obj_textsec(abfd)->vma + obj_textsec(abfd)->_raw_size)) |
| 484 | abfd->flags |= EXEC_P; |
| 485 | if (result) |
| 486 | { |
| 487 | abfd->sections = obj_textsec (abfd); |
| 488 | obj_textsec (abfd)->next = obj_datasec (abfd); |
| 489 | obj_datasec (abfd)->next = obj_bsssec (abfd); |
| 490 | } |
| 491 | else |
| 492 | { |
| 493 | free (rawptr); |
| 494 | abfd->tdata.aout_data = oldrawptr; |
| 495 | } |
| 496 | return result; |
| 497 | } |
| 498 | |
| 499 | /* |
| 500 | FUNCTION |
| 501 | aout_<size>_mkobject |
| 502 | |
| 503 | DESCRIPTION |
| 504 | This routine initializes a BFD for use with a.out files. |
| 505 | |
| 506 | EXAMPLE |
| 507 | boolean aout_<size>_mkobject, (bfd *); |
| 508 | */ |
| 509 | |
| 510 | boolean |
| 511 | DEFUN(NAME(aout,mkobject),(abfd), |
| 512 | bfd *abfd) |
| 513 | { |
| 514 | struct aout_data_struct *rawptr; |
| 515 | |
| 516 | bfd_error = system_call_error; |
| 517 | |
| 518 | /* Use an intermediate variable for clarity */ |
| 519 | rawptr = (struct aout_data_struct *)bfd_zalloc (abfd, sizeof (struct aout_data_struct )); |
| 520 | |
| 521 | if (rawptr == NULL) { |
| 522 | bfd_error = no_memory; |
| 523 | return false; |
| 524 | } |
| 525 | |
| 526 | abfd->tdata.aout_data = rawptr; |
| 527 | exec_hdr (abfd) = &(rawptr->e); |
| 528 | |
| 529 | /* For simplicity's sake we just make all the sections right here. */ |
| 530 | |
| 531 | obj_textsec (abfd) = (asection *)NULL; |
| 532 | obj_datasec (abfd) = (asection *)NULL; |
| 533 | obj_bsssec (abfd) = (asection *)NULL; |
| 534 | bfd_make_section (abfd, ".text"); |
| 535 | bfd_make_section (abfd, ".data"); |
| 536 | bfd_make_section (abfd, ".bss"); |
| 537 | bfd_make_section (abfd, BFD_ABS_SECTION_NAME); |
| 538 | bfd_make_section (abfd, BFD_UND_SECTION_NAME); |
| 539 | bfd_make_section (abfd, BFD_COM_SECTION_NAME); |
| 540 | |
| 541 | return true; |
| 542 | } |
| 543 | |
| 544 | |
| 545 | /* |
| 546 | FUNCTION |
| 547 | aout_<size>_machine_type |
| 548 | |
| 549 | DESCRIPTION |
| 550 | Keep track of machine architecture and machine type for |
| 551 | a.out's. Return the machine_type for a particular |
| 552 | arch&machine, or M_UNKNOWN if that exact arch&machine can't be |
| 553 | represented in a.out format. |
| 554 | |
| 555 | If the architecture is understood, machine type 0 (default) |
| 556 | should always be understood. |
| 557 | |
| 558 | EXAMPLE |
| 559 | enum machine_type aout_<size>_machine_type |
| 560 | (enum bfd_architecture arch, |
| 561 | unsigned long machine)); |
| 562 | */ |
| 563 | |
| 564 | enum machine_type |
| 565 | DEFUN(NAME(aout,machine_type),(arch, machine), |
| 566 | enum bfd_architecture arch AND |
| 567 | unsigned long machine) |
| 568 | { |
| 569 | enum machine_type arch_flags; |
| 570 | |
| 571 | arch_flags = M_UNKNOWN; |
| 572 | |
| 573 | switch (arch) { |
| 574 | case bfd_arch_sparc: |
| 575 | if (machine == 0) arch_flags = M_SPARC; |
| 576 | break; |
| 577 | |
| 578 | case bfd_arch_m68k: |
| 579 | switch (machine) { |
| 580 | case 0: arch_flags = M_68010; break; |
| 581 | case 68000: arch_flags = M_UNKNOWN; break; |
| 582 | case 68010: arch_flags = M_68010; break; |
| 583 | case 68020: arch_flags = M_68020; break; |
| 584 | default: arch_flags = M_UNKNOWN; break; |
| 585 | } |
| 586 | break; |
| 587 | |
| 588 | case bfd_arch_i386: |
| 589 | if (machine == 0) arch_flags = M_386; |
| 590 | break; |
| 591 | |
| 592 | case bfd_arch_a29k: |
| 593 | if (machine == 0) arch_flags = M_29K; |
| 594 | break; |
| 595 | |
| 596 | default: |
| 597 | arch_flags = M_UNKNOWN; |
| 598 | break; |
| 599 | } |
| 600 | return arch_flags; |
| 601 | } |
| 602 | |
| 603 | |
| 604 | /* |
| 605 | FUNCTION |
| 606 | aout_<size>_set_arch_mach |
| 607 | |
| 608 | DESCRIPTION |
| 609 | Sets the architecture and the machine of the BFD to those |
| 610 | values supplied. Verifies that the format can support the |
| 611 | architecture required. |
| 612 | |
| 613 | EXAMPLE |
| 614 | boolean aout_<size>_set_arch_mach, |
| 615 | (bfd *, |
| 616 | enum bfd_architecture, |
| 617 | unsigned long machine)); |
| 618 | */ |
| 619 | |
| 620 | boolean |
| 621 | DEFUN(NAME(aout,set_arch_mach),(abfd, arch, machine), |
| 622 | bfd *abfd AND |
| 623 | enum bfd_architecture arch AND |
| 624 | unsigned long machine) |
| 625 | { |
| 626 | bfd_default_set_arch_mach(abfd, arch, machine); |
| 627 | if (arch != bfd_arch_unknown && |
| 628 | NAME(aout,machine_type) (arch, machine) == M_UNKNOWN) |
| 629 | return false; /* We can't represent this type */ |
| 630 | |
| 631 | /* Determine the size of a relocation entry */ |
| 632 | switch (arch) { |
| 633 | case bfd_arch_sparc: |
| 634 | case bfd_arch_a29k: |
| 635 | obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE; |
| 636 | break; |
| 637 | default: |
| 638 | obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; |
| 639 | break; |
| 640 | } |
| 641 | |
| 642 | return (*aout_backend_info(abfd)->set_sizes) (abfd); |
| 643 | } |
| 644 | |
| 645 | boolean |
| 646 | DEFUN (NAME (aout,adjust_sizes_and_vmas), (abfd, text_size, text_end), |
| 647 | bfd *abfd AND bfd_size_type *text_size AND file_ptr *text_end) |
| 648 | { |
| 649 | struct internal_exec *execp = exec_hdr (abfd); |
| 650 | if ((obj_textsec (abfd) == NULL) || (obj_datasec (abfd) == NULL)) |
| 651 | { |
| 652 | bfd_error = invalid_operation; |
| 653 | return false; |
| 654 | } |
| 655 | if (adata(abfd).magic != undecided_magic) return true; |
| 656 | obj_textsec(abfd)->_raw_size = |
| 657 | align_power(obj_textsec(abfd)->_raw_size, |
| 658 | obj_textsec(abfd)->alignment_power); |
| 659 | |
| 660 | *text_size = obj_textsec (abfd)->_raw_size; |
| 661 | /* Rule (heuristic) for when to pad to a new page. Note that there |
| 662 | * are (at least) two ways demand-paged (ZMAGIC) files have been |
| 663 | * handled. Most Berkeley-based systems start the text segment at |
| 664 | * (PAGE_SIZE). However, newer versions of SUNOS start the text |
| 665 | * segment right after the exec header; the latter is counted in the |
| 666 | * text segment size, and is paged in by the kernel with the rest of |
| 667 | * the text. */ |
| 668 | |
| 669 | /* This perhaps isn't the right way to do this, but made it simpler for me |
| 670 | to understand enough to implement it. Better would probably be to go |
| 671 | right from BFD flags to alignment/positioning characteristics. But the |
| 672 | old code was sloppy enough about handling the flags, and had enough |
| 673 | other magic, that it was a little hard for me to understand. I think |
| 674 | I understand it better now, but I haven't time to do the cleanup this |
| 675 | minute. */ |
| 676 | if (adata(abfd).magic == undecided_magic) |
| 677 | { |
| 678 | if (abfd->flags & D_PAGED) |
| 679 | /* whether or not WP_TEXT is set */ |
| 680 | adata(abfd).magic = z_magic; |
| 681 | else if (abfd->flags & WP_TEXT) |
| 682 | adata(abfd).magic = n_magic; |
| 683 | else |
| 684 | adata(abfd).magic = o_magic; |
| 685 | } |
| 686 | |
| 687 | #ifdef BFD_AOUT_DEBUG /* requires gcc2 */ |
| 688 | #if __GNUC__ >= 2 |
| 689 | fprintf (stderr, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n", |
| 690 | ({ char *str; |
| 691 | switch (adata(abfd).magic) { |
| 692 | case n_magic: str = "NMAGIC"; break; |
| 693 | case o_magic: str = "OMAGIC"; break; |
| 694 | case z_magic: str = "ZMAGIC"; break; |
| 695 | default: abort (); |
| 696 | } |
| 697 | str; |
| 698 | }), |
| 699 | obj_textsec(abfd)->vma, obj_textsec(abfd)->_raw_size, obj_textsec(abfd)->alignment_power, |
| 700 | obj_datasec(abfd)->vma, obj_datasec(abfd)->_raw_size, obj_datasec(abfd)->alignment_power, |
| 701 | obj_bsssec(abfd)->vma, obj_bsssec(abfd)->_raw_size, obj_bsssec(abfd)->alignment_power); |
| 702 | #endif |
| 703 | #endif |
| 704 | |
| 705 | switch (adata(abfd).magic) |
| 706 | { |
| 707 | case o_magic: |
| 708 | { |
| 709 | file_ptr pos = adata (abfd).exec_bytes_size; |
| 710 | bfd_vma vma = 0; |
| 711 | int pad = 0; |
| 712 | |
| 713 | obj_textsec(abfd)->filepos = pos; |
| 714 | pos += obj_textsec(abfd)->_raw_size; |
| 715 | vma += obj_textsec(abfd)->_raw_size; |
| 716 | if (!obj_datasec(abfd)->user_set_vma) |
| 717 | { |
| 718 | #if 0 /* ?? Does alignment in the file image really matter? */ |
| 719 | pad = align_power (vma, obj_datasec(abfd)->alignment_power) - vma; |
| 720 | #endif |
| 721 | obj_textsec(abfd)->_raw_size += pad; |
| 722 | pos += pad; |
| 723 | vma += pad; |
| 724 | obj_datasec(abfd)->vma = vma; |
| 725 | } |
| 726 | obj_datasec(abfd)->filepos = pos; |
| 727 | pos += obj_datasec(abfd)->_raw_size; |
| 728 | vma += obj_datasec(abfd)->_raw_size; |
| 729 | if (!obj_bsssec(abfd)->user_set_vma) |
| 730 | { |
| 731 | #if 0 |
| 732 | pad = align_power (vma, obj_bsssec(abfd)->alignment_power) - vma; |
| 733 | #endif |
| 734 | obj_datasec(abfd)->_raw_size += pad; |
| 735 | pos += pad; |
| 736 | vma += pad; |
| 737 | obj_bsssec(abfd)->vma = vma; |
| 738 | } |
| 739 | obj_bsssec(abfd)->filepos = pos; |
| 740 | execp->a_text = obj_textsec(abfd)->_raw_size; |
| 741 | execp->a_data = obj_datasec(abfd)->_raw_size; |
| 742 | execp->a_bss = obj_bsssec(abfd)->_raw_size; |
| 743 | N_SET_MAGIC (*execp, OMAGIC); |
| 744 | } |
| 745 | break; |
| 746 | case z_magic: |
| 747 | { |
| 748 | bfd_size_type data_pad, text_pad; |
| 749 | file_ptr text_end; |
| 750 | CONST struct aout_backend_data *abdp; |
| 751 | int ztih; |
| 752 | bfd_vma data_vma; |
| 753 | |
| 754 | abdp = aout_backend_info (abfd); |
| 755 | ztih = abdp && abdp->text_includes_header; |
| 756 | obj_textsec(abfd)->filepos = (ztih |
| 757 | ? adata(abfd).exec_bytes_size |
| 758 | : adata(abfd).page_size); |
| 759 | if (! obj_textsec(abfd)->user_set_vma) |
| 760 | /* ?? Do we really need to check for relocs here? */ |
| 761 | obj_textsec(abfd)->vma = ((abfd->flags & HAS_RELOC) |
| 762 | ? 0 |
| 763 | : (ztih |
| 764 | ? (abdp->default_text_vma |
| 765 | + adata(abfd).exec_bytes_size) |
| 766 | : abdp->default_text_vma)); |
| 767 | /* Could take strange alignment of text section into account here? */ |
| 768 | |
| 769 | /* Find start of data. */ |
| 770 | text_end = obj_textsec(abfd)->filepos + obj_textsec(abfd)->_raw_size; |
| 771 | text_pad = BFD_ALIGN (text_end, adata(abfd).page_size) - text_end; |
| 772 | obj_textsec(abfd)->_raw_size += text_pad; |
| 773 | text_end += text_pad; |
| 774 | |
| 775 | if (!obj_datasec(abfd)->user_set_vma) |
| 776 | { |
| 777 | bfd_vma vma; |
| 778 | vma = obj_textsec(abfd)->vma + obj_textsec(abfd)->_raw_size; |
| 779 | obj_datasec(abfd)->vma = BFD_ALIGN (vma, adata(abfd).segment_size); |
| 780 | } |
| 781 | data_vma = obj_datasec(abfd)->vma; |
| 782 | if (abdp && abdp->zmagic_mapped_contiguous) |
| 783 | { |
| 784 | text_pad = (obj_datasec(abfd)->vma |
| 785 | - obj_textsec(abfd)->vma |
| 786 | - obj_textsec(abfd)->_raw_size); |
| 787 | obj_textsec(abfd)->_raw_size += text_pad; |
| 788 | } |
| 789 | obj_datasec(abfd)->filepos = (obj_textsec(abfd)->filepos |
| 790 | + obj_textsec(abfd)->_raw_size); |
| 791 | |
| 792 | /* Fix up exec header while we're at it. */ |
| 793 | execp->a_text = obj_textsec(abfd)->_raw_size; |
| 794 | if (ztih && (!abdp || (abdp && !abdp->exec_header_not_counted))) |
| 795 | execp->a_text += adata(abfd).exec_bytes_size; |
| 796 | N_SET_MAGIC (*execp, ZMAGIC); |
| 797 | /* Spec says data section should be rounded up to page boundary. */ |
| 798 | /* If extra space in page is left after data section, fudge data |
| 799 | in the header so that the bss section looks smaller by that |
| 800 | amount. We'll start the bss section there, and lie to the OS. */ |
| 801 | obj_datasec(abfd)->_raw_size |
| 802 | = align_power (obj_datasec(abfd)->_raw_size, |
| 803 | obj_bsssec(abfd)->alignment_power); |
| 804 | execp->a_data = BFD_ALIGN (obj_datasec(abfd)->_raw_size, |
| 805 | adata(abfd).page_size); |
| 806 | data_pad = execp->a_data - obj_datasec(abfd)->_raw_size; |
| 807 | /* This code is almost surely botched. It'll only get tested |
| 808 | for the case where the application does explicitly set the VMA |
| 809 | of the BSS section. */ |
| 810 | if (obj_bsssec(abfd)->user_set_vma |
| 811 | && (obj_bsssec(abfd)->vma |
| 812 | > BFD_ALIGN (obj_datasec(abfd)->vma |
| 813 | + obj_datasec(abfd)->_raw_size, |
| 814 | adata(abfd).page_size))) |
| 815 | { |
| 816 | /* Can't play with squeezing into data pages; fix this code. */ |
| 817 | abort (); |
| 818 | } |
| 819 | if (!obj_bsssec(abfd)->user_set_vma) |
| 820 | obj_bsssec(abfd)->vma = (obj_datasec(abfd)->vma |
| 821 | + obj_datasec(abfd)->_raw_size); |
| 822 | if (data_pad > obj_bsssec(abfd)->_raw_size) |
| 823 | execp->a_bss = 0; |
| 824 | else |
| 825 | execp->a_bss = obj_bsssec(abfd)->_raw_size - data_pad; |
| 826 | } |
| 827 | break; |
| 828 | case n_magic: |
| 829 | { |
| 830 | file_ptr pos = adata(abfd).exec_bytes_size; |
| 831 | bfd_vma vma = 0; |
| 832 | int pad; |
| 833 | |
| 834 | obj_textsec(abfd)->filepos = pos; |
| 835 | if (!obj_textsec(abfd)->user_set_vma) |
| 836 | obj_textsec(abfd)->vma = vma; |
| 837 | else |
| 838 | vma = obj_textsec(abfd)->vma; |
| 839 | pos += obj_textsec(abfd)->_raw_size; |
| 840 | vma += obj_textsec(abfd)->_raw_size; |
| 841 | obj_datasec(abfd)->filepos = pos; |
| 842 | if (!obj_datasec(abfd)->user_set_vma) |
| 843 | obj_datasec(abfd)->vma = BFD_ALIGN (vma, adata(abfd).segment_size); |
| 844 | vma = obj_datasec(abfd)->vma; |
| 845 | |
| 846 | /* Since BSS follows data immediately, see if it needs alignment. */ |
| 847 | vma += obj_datasec(abfd)->_raw_size; |
| 848 | pad = align_power (vma, obj_bsssec(abfd)->alignment_power) - vma; |
| 849 | obj_datasec(abfd)->_raw_size += pad; |
| 850 | pos += obj_datasec(abfd)->_raw_size; |
| 851 | |
| 852 | if (!obj_bsssec(abfd)->user_set_vma) |
| 853 | obj_bsssec(abfd)->vma = vma; |
| 854 | else |
| 855 | vma = obj_bsssec(abfd)->vma; |
| 856 | } |
| 857 | execp->a_text = obj_textsec(abfd)->_raw_size; |
| 858 | execp->a_data = obj_datasec(abfd)->_raw_size; |
| 859 | execp->a_bss = obj_bsssec(abfd)->_raw_size; |
| 860 | N_SET_MAGIC (*execp, NMAGIC); |
| 861 | break; |
| 862 | default: |
| 863 | abort (); |
| 864 | } |
| 865 | #ifdef BFD_AOUT_DEBUG |
| 866 | fprintf (stderr, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n", |
| 867 | obj_textsec(abfd)->vma, obj_textsec(abfd)->_raw_size, obj_textsec(abfd)->filepos, |
| 868 | obj_datasec(abfd)->vma, obj_datasec(abfd)->_raw_size, obj_datasec(abfd)->filepos, |
| 869 | obj_bsssec(abfd)->vma, obj_bsssec(abfd)->_raw_size); |
| 870 | #endif |
| 871 | return true; |
| 872 | } |
| 873 | |
| 874 | /* |
| 875 | FUNCTION |
| 876 | aout_<size>new_section_hook |
| 877 | |
| 878 | DESCRIPTION |
| 879 | Called by the BFD in response to a @code{bfd_make_section} |
| 880 | request. |
| 881 | |
| 882 | EXAMPLE |
| 883 | boolean aout_<size>_new_section_hook, |
| 884 | (bfd *abfd, |
| 885 | asection *newsect)); |
| 886 | */ |
| 887 | boolean |
| 888 | DEFUN(NAME(aout,new_section_hook),(abfd, newsect), |
| 889 | bfd *abfd AND |
| 890 | asection *newsect) |
| 891 | { |
| 892 | /* align to double at least */ |
| 893 | newsect->alignment_power = bfd_get_arch_info(abfd)->section_align_power; |
| 894 | |
| 895 | |
| 896 | if (bfd_get_format (abfd) == bfd_object) |
| 897 | { |
| 898 | if (obj_textsec(abfd) == NULL && !strcmp(newsect->name, ".text")) { |
| 899 | obj_textsec(abfd)= newsect; |
| 900 | newsect->target_index = N_TEXT | N_EXT; |
| 901 | return true; |
| 902 | } |
| 903 | |
| 904 | if (obj_datasec(abfd) == NULL && !strcmp(newsect->name, ".data")) { |
| 905 | obj_datasec(abfd) = newsect; |
| 906 | newsect->target_index = N_DATA | N_EXT; |
| 907 | return true; |
| 908 | } |
| 909 | |
| 910 | if (obj_bsssec(abfd) == NULL && !strcmp(newsect->name, ".bss")) { |
| 911 | obj_bsssec(abfd) = newsect; |
| 912 | newsect->target_index = N_BSS | N_EXT; |
| 913 | return true; |
| 914 | } |
| 915 | |
| 916 | } |
| 917 | |
| 918 | /* We allow more than three sections internally */ |
| 919 | return true; |
| 920 | } |
| 921 | |
| 922 | boolean |
| 923 | DEFUN(NAME(aout,set_section_contents),(abfd, section, location, offset, count), |
| 924 | bfd *abfd AND |
| 925 | sec_ptr section AND |
| 926 | PTR location AND |
| 927 | file_ptr offset AND |
| 928 | bfd_size_type count) |
| 929 | { |
| 930 | file_ptr text_end; |
| 931 | bfd_size_type text_size; |
| 932 | |
| 933 | if (abfd->output_has_begun == false) |
| 934 | { /* set by bfd.c handler */ |
| 935 | switch (abfd->direction) |
| 936 | { |
| 937 | case read_direction: |
| 938 | case no_direction: |
| 939 | bfd_error = invalid_operation; |
| 940 | return false; |
| 941 | |
| 942 | case write_direction: |
| 943 | if (NAME(aout,adjust_sizes_and_vmas) (abfd, |
| 944 | &text_size, |
| 945 | &text_end) == false) |
| 946 | return false; |
| 947 | case both_direction: |
| 948 | break; |
| 949 | } |
| 950 | } |
| 951 | |
| 952 | /* regardless, once we know what we're doing, we might as well get going */ |
| 953 | if (section != obj_bsssec(abfd)) |
| 954 | { |
| 955 | bfd_seek (abfd, section->filepos + offset, SEEK_SET); |
| 956 | |
| 957 | if (count) { |
| 958 | return (bfd_write ((PTR)location, 1, count, abfd) == count) ? |
| 959 | true : false; |
| 960 | } |
| 961 | return true; |
| 962 | } |
| 963 | return true; |
| 964 | } |
| 965 | \f |
| 966 | /* Classify stabs symbols */ |
| 967 | |
| 968 | #define sym_in_text_section(sym) \ |
| 969 | (((sym)->type & (N_ABS | N_TEXT | N_DATA | N_BSS))== N_TEXT) |
| 970 | |
| 971 | #define sym_in_data_section(sym) \ |
| 972 | (((sym)->type & (N_ABS | N_TEXT | N_DATA | N_BSS))== N_DATA) |
| 973 | |
| 974 | #define sym_in_bss_section(sym) \ |
| 975 | (((sym)->type & (N_ABS | N_TEXT | N_DATA | N_BSS))== N_BSS) |
| 976 | |
| 977 | /* Symbol is undefined if type is N_UNDF|N_EXT and if it has |
| 978 | zero in the "value" field. Nonzeroes there are fortrancommon |
| 979 | symbols. */ |
| 980 | #define sym_is_undefined(sym) \ |
| 981 | ((sym)->type == (N_UNDF | N_EXT) && (sym)->symbol.value == 0) |
| 982 | |
| 983 | /* Symbol is a global definition if N_EXT is on and if it has |
| 984 | a nonzero type field. */ |
| 985 | #define sym_is_global_defn(sym) \ |
| 986 | (((sym)->type & N_EXT) && (sym)->type & N_TYPE) |
| 987 | |
| 988 | /* Symbol is debugger info if any bits outside N_TYPE or N_EXT |
| 989 | are on. */ |
| 990 | #define sym_is_debugger_info(sym) \ |
| 991 | ((sym)->type & ~(N_EXT | N_TYPE)) |
| 992 | |
| 993 | #define sym_is_fortrancommon(sym) \ |
| 994 | (((sym)->type == (N_EXT)) && (sym)->symbol.value != 0) |
| 995 | |
| 996 | /* Symbol is absolute if it has N_ABS set */ |
| 997 | #define sym_is_absolute(sym) \ |
| 998 | (((sym)->type & N_TYPE)== N_ABS) |
| 999 | |
| 1000 | |
| 1001 | #define sym_is_indirect(sym) \ |
| 1002 | (((sym)->type & N_ABS)== N_ABS) |
| 1003 | |
| 1004 | /* Only in their own functions for ease of debugging; when sym flags have |
| 1005 | stabilised these should be inlined into their (single) caller */ |
| 1006 | |
| 1007 | static void |
| 1008 | DEFUN(translate_from_native_sym_flags,(sym_pointer, cache_ptr, abfd), |
| 1009 | struct external_nlist *sym_pointer AND |
| 1010 | aout_symbol_type *cache_ptr AND |
| 1011 | bfd *abfd) |
| 1012 | { |
| 1013 | switch (cache_ptr->type & N_TYPE) |
| 1014 | { |
| 1015 | case N_SETA: |
| 1016 | case N_SETT: |
| 1017 | case N_SETD: |
| 1018 | case N_SETB: |
| 1019 | { |
| 1020 | char *copy = bfd_alloc(abfd, strlen(cache_ptr->symbol.name)+1); |
| 1021 | asection *section ; |
| 1022 | asection *into_section; |
| 1023 | |
| 1024 | arelent_chain *reloc = (arelent_chain *)bfd_alloc(abfd, sizeof(arelent_chain)); |
| 1025 | strcpy(copy, cache_ptr->symbol.name); |
| 1026 | |
| 1027 | /* Make sure that this bfd has a section with the right contructor |
| 1028 | name */ |
| 1029 | section = bfd_get_section_by_name (abfd, copy); |
| 1030 | if (!section) |
| 1031 | section = bfd_make_section(abfd,copy); |
| 1032 | |
| 1033 | /* Build a relocation entry for the constructor */ |
| 1034 | switch ( (cache_ptr->type & N_TYPE) ) |
| 1035 | { |
| 1036 | case N_SETA: |
| 1037 | into_section = &bfd_abs_section; |
| 1038 | break; |
| 1039 | case N_SETT: |
| 1040 | into_section = (asection *)obj_textsec(abfd); |
| 1041 | break; |
| 1042 | case N_SETD: |
| 1043 | into_section = (asection *)obj_datasec(abfd); |
| 1044 | break; |
| 1045 | case N_SETB: |
| 1046 | into_section = (asection *)obj_bsssec(abfd); |
| 1047 | break; |
| 1048 | default: |
| 1049 | abort(); |
| 1050 | } |
| 1051 | |
| 1052 | /* Build a relocation pointing into the constuctor section |
| 1053 | pointing at the symbol in the set vector specified */ |
| 1054 | |
| 1055 | reloc->relent.addend = cache_ptr->symbol.value; |
| 1056 | cache_ptr->symbol.section = into_section->symbol->section; |
| 1057 | reloc->relent.sym_ptr_ptr = into_section->symbol_ptr_ptr; |
| 1058 | |
| 1059 | |
| 1060 | /* We modify the symbol to belong to a section depending upon the |
| 1061 | name of the symbol - probably __CTOR__ or __DTOR__ but we don't |
| 1062 | really care, and add to the size of the section to contain a |
| 1063 | pointer to the symbol. Build a reloc entry to relocate to this |
| 1064 | symbol attached to this section. */ |
| 1065 | |
| 1066 | section->flags = SEC_CONSTRUCTOR; |
| 1067 | |
| 1068 | |
| 1069 | section->reloc_count++; |
| 1070 | section->alignment_power = 2; |
| 1071 | |
| 1072 | reloc->next = section->constructor_chain; |
| 1073 | section->constructor_chain = reloc; |
| 1074 | reloc->relent.address = section->_raw_size; |
| 1075 | section->_raw_size += sizeof(int *); |
| 1076 | |
| 1077 | reloc->relent.howto = howto_table_ext + CTOR_TABLE_RELOC_IDX; |
| 1078 | cache_ptr->symbol.flags |= BSF_DEBUGGING | BSF_CONSTRUCTOR; |
| 1079 | } |
| 1080 | break; |
| 1081 | default: |
| 1082 | if (cache_ptr->type == N_WARNING) |
| 1083 | { |
| 1084 | /* This symbol is the text of a warning message, the next symbol |
| 1085 | is the symbol to associate the warning with */ |
| 1086 | cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_WARNING; |
| 1087 | cache_ptr->symbol.value = (bfd_vma)((cache_ptr+1)); |
| 1088 | /* We furgle with the next symbol in place. We don't want it to be undefined, we'll trample the type */ |
| 1089 | (sym_pointer+1)->e_type[0] = 0xff; |
| 1090 | break; |
| 1091 | } |
| 1092 | if ((cache_ptr->type | N_EXT) == (N_INDR | N_EXT)) { |
| 1093 | /* Two symbols in a row for an INDR message. The first symbol |
| 1094 | contains the name we will match, the second symbol contains the |
| 1095 | name the first name is translated into. It is supplied to us |
| 1096 | undefined. This is good, since we want to pull in any files which |
| 1097 | define it */ |
| 1098 | cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_INDIRECT; |
| 1099 | cache_ptr->symbol.value = (bfd_vma)((cache_ptr+1)); |
| 1100 | cache_ptr->symbol.section = &bfd_und_section; |
| 1101 | break; |
| 1102 | } |
| 1103 | |
| 1104 | |
| 1105 | if (sym_is_debugger_info (cache_ptr)) { |
| 1106 | cache_ptr->symbol.flags = BSF_DEBUGGING ; |
| 1107 | /* Work out the section correct for this symbol */ |
| 1108 | switch (cache_ptr->type & N_TYPE) |
| 1109 | { |
| 1110 | case N_TEXT: |
| 1111 | case N_FN: |
| 1112 | cache_ptr->symbol.section = obj_textsec (abfd); |
| 1113 | cache_ptr->symbol.value -= obj_textsec(abfd)->vma; |
| 1114 | break; |
| 1115 | case N_DATA: |
| 1116 | cache_ptr->symbol.value -= obj_datasec(abfd)->vma; |
| 1117 | cache_ptr->symbol.section = obj_datasec (abfd); |
| 1118 | break; |
| 1119 | case N_BSS : |
| 1120 | cache_ptr->symbol.section = obj_bsssec (abfd); |
| 1121 | cache_ptr->symbol.value -= obj_bsssec(abfd)->vma; |
| 1122 | break; |
| 1123 | default: |
| 1124 | case N_ABS: |
| 1125 | |
| 1126 | cache_ptr->symbol.section = &bfd_abs_section; |
| 1127 | break; |
| 1128 | } |
| 1129 | } |
| 1130 | else { |
| 1131 | |
| 1132 | if (sym_is_fortrancommon (cache_ptr)) |
| 1133 | { |
| 1134 | cache_ptr->symbol.flags = 0; |
| 1135 | cache_ptr->symbol.section = &bfd_com_section; |
| 1136 | } |
| 1137 | else { |
| 1138 | |
| 1139 | |
| 1140 | } |
| 1141 | |
| 1142 | /* In a.out, the value of a symbol is always relative to the |
| 1143 | * start of the file, if this is a data symbol we'll subtract |
| 1144 | * the size of the text section to get the section relative |
| 1145 | * value. If this is a bss symbol (which would be strange) |
| 1146 | * we'll subtract the size of the previous two sections |
| 1147 | * to find the section relative address. |
| 1148 | */ |
| 1149 | |
| 1150 | if (sym_in_text_section (cache_ptr)) { |
| 1151 | cache_ptr->symbol.value -= obj_textsec(abfd)->vma; |
| 1152 | cache_ptr->symbol.section = obj_textsec (abfd); |
| 1153 | } |
| 1154 | else if (sym_in_data_section (cache_ptr)){ |
| 1155 | cache_ptr->symbol.value -= obj_datasec(abfd)->vma; |
| 1156 | cache_ptr->symbol.section = obj_datasec (abfd); |
| 1157 | } |
| 1158 | else if (sym_in_bss_section(cache_ptr)) { |
| 1159 | cache_ptr->symbol.section = obj_bsssec (abfd); |
| 1160 | cache_ptr->symbol.value -= obj_bsssec(abfd)->vma; |
| 1161 | } |
| 1162 | else if (sym_is_undefined (cache_ptr)) { |
| 1163 | cache_ptr->symbol.flags = 0; |
| 1164 | cache_ptr->symbol.section = &bfd_und_section; |
| 1165 | } |
| 1166 | else if (sym_is_absolute(cache_ptr)) |
| 1167 | { |
| 1168 | cache_ptr->symbol.section = &bfd_abs_section; |
| 1169 | } |
| 1170 | |
| 1171 | if (sym_is_global_defn (cache_ptr)) |
| 1172 | { |
| 1173 | cache_ptr->symbol.flags = BSF_GLOBAL | BSF_EXPORT; |
| 1174 | } |
| 1175 | else |
| 1176 | { |
| 1177 | cache_ptr->symbol.flags = BSF_LOCAL; |
| 1178 | } |
| 1179 | } |
| 1180 | } |
| 1181 | } |
| 1182 | |
| 1183 | |
| 1184 | |
| 1185 | static void |
| 1186 | DEFUN(translate_to_native_sym_flags,(sym_pointer, cache_ptr, abfd), |
| 1187 | struct external_nlist *sym_pointer AND |
| 1188 | asymbol *cache_ptr AND |
| 1189 | bfd *abfd) |
| 1190 | { |
| 1191 | bfd_vma value = cache_ptr->value; |
| 1192 | |
| 1193 | /* mask out any existing type bits in case copying from one section |
| 1194 | to another */ |
| 1195 | sym_pointer->e_type[0] &= ~N_TYPE; |
| 1196 | |
| 1197 | if (bfd_get_output_section(cache_ptr) == obj_bsssec (abfd)) { |
| 1198 | sym_pointer->e_type[0] |= N_BSS; |
| 1199 | } |
| 1200 | else if (bfd_get_output_section(cache_ptr) == obj_datasec (abfd)) { |
| 1201 | sym_pointer->e_type[0] |= N_DATA; |
| 1202 | } |
| 1203 | else if (bfd_get_output_section(cache_ptr) == obj_textsec (abfd)) { |
| 1204 | sym_pointer->e_type[0] |= N_TEXT; |
| 1205 | } |
| 1206 | else if (bfd_get_output_section(cache_ptr) == &bfd_abs_section) |
| 1207 | { |
| 1208 | sym_pointer->e_type[0] |= N_ABS; |
| 1209 | } |
| 1210 | else if (bfd_get_output_section(cache_ptr) == &bfd_und_section) |
| 1211 | { |
| 1212 | sym_pointer->e_type[0] = (N_UNDF | N_EXT); |
| 1213 | } |
| 1214 | else if (bfd_get_output_section(cache_ptr) == &bfd_com_section) { |
| 1215 | sym_pointer->e_type[0] = (N_UNDF | N_EXT); |
| 1216 | } |
| 1217 | else { |
| 1218 | if (cache_ptr->section->output_section) |
| 1219 | { |
| 1220 | |
| 1221 | bfd_error_vector.nonrepresentable_section(abfd, |
| 1222 | bfd_get_output_section(cache_ptr)->name); |
| 1223 | } |
| 1224 | else |
| 1225 | { |
| 1226 | bfd_error_vector.nonrepresentable_section(abfd, |
| 1227 | cache_ptr->section->name); |
| 1228 | |
| 1229 | } |
| 1230 | |
| 1231 | } |
| 1232 | /* Turn the symbol from section relative to absolute again */ |
| 1233 | |
| 1234 | value += cache_ptr->section->output_section->vma + cache_ptr->section->output_offset ; |
| 1235 | |
| 1236 | |
| 1237 | if (cache_ptr->flags & (BSF_WARNING)) { |
| 1238 | (sym_pointer+1)->e_type[0] = 1; |
| 1239 | } |
| 1240 | |
| 1241 | if (cache_ptr->flags & (BSF_GLOBAL | BSF_EXPORT)) { |
| 1242 | sym_pointer->e_type[0] |= N_EXT; |
| 1243 | } |
| 1244 | if (cache_ptr->flags & BSF_DEBUGGING) { |
| 1245 | sym_pointer->e_type [0]= ((aout_symbol_type *)cache_ptr)->type; |
| 1246 | } |
| 1247 | |
| 1248 | PUT_WORD(abfd, value, sym_pointer->e_value); |
| 1249 | } |
| 1250 | \f |
| 1251 | /* Native-level interface to symbols. */ |
| 1252 | |
| 1253 | /* We read the symbols into a buffer, which is discarded when this |
| 1254 | function exits. We read the strings into a buffer large enough to |
| 1255 | hold them all plus all the cached symbol entries. */ |
| 1256 | |
| 1257 | asymbol * |
| 1258 | DEFUN(NAME(aout,make_empty_symbol),(abfd), |
| 1259 | bfd *abfd) |
| 1260 | { |
| 1261 | aout_symbol_type *new = |
| 1262 | (aout_symbol_type *)bfd_zalloc (abfd, sizeof (aout_symbol_type)); |
| 1263 | new->symbol.the_bfd = abfd; |
| 1264 | |
| 1265 | return &new->symbol; |
| 1266 | } |
| 1267 | |
| 1268 | boolean |
| 1269 | DEFUN(NAME(aout,slurp_symbol_table),(abfd), |
| 1270 | bfd *abfd) |
| 1271 | { |
| 1272 | bfd_size_type symbol_size; |
| 1273 | bfd_size_type string_size; |
| 1274 | unsigned char string_chars[BYTES_IN_WORD]; |
| 1275 | struct external_nlist *syms; |
| 1276 | char *strings; |
| 1277 | aout_symbol_type *cached; |
| 1278 | |
| 1279 | /* If there's no work to be done, don't do any */ |
| 1280 | if (obj_aout_symbols (abfd) != (aout_symbol_type *)NULL) return true; |
| 1281 | symbol_size = exec_hdr(abfd)->a_syms; |
| 1282 | if (symbol_size == 0) { |
| 1283 | bfd_error = no_symbols; |
| 1284 | return false; |
| 1285 | } |
| 1286 | |
| 1287 | bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET); |
| 1288 | if (bfd_read ((PTR)string_chars, BYTES_IN_WORD, 1, abfd) != BYTES_IN_WORD) |
| 1289 | return false; |
| 1290 | string_size = GET_WORD (abfd, string_chars); |
| 1291 | |
| 1292 | strings =(char *) bfd_alloc(abfd, string_size + 1); |
| 1293 | cached = (aout_symbol_type *) |
| 1294 | bfd_zalloc(abfd, (bfd_size_type)(bfd_get_symcount (abfd) * sizeof(aout_symbol_type))); |
| 1295 | |
| 1296 | /* malloc this, so we can free it if simply. The symbol caching |
| 1297 | might want to allocate onto the bfd's obstack */ |
| 1298 | syms = (struct external_nlist *) bfd_xmalloc(symbol_size); |
| 1299 | bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET); |
| 1300 | if (bfd_read ((PTR)syms, 1, symbol_size, abfd) != symbol_size) { |
| 1301 | bailout: |
| 1302 | if (syms) free (syms); |
| 1303 | if (cached) bfd_release (abfd, cached); |
| 1304 | if (strings)bfd_release (abfd, strings); |
| 1305 | return false; |
| 1306 | } |
| 1307 | |
| 1308 | bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET); |
| 1309 | if (bfd_read ((PTR)strings, 1, string_size, abfd) != string_size) { |
| 1310 | goto bailout; |
| 1311 | } |
| 1312 | |
| 1313 | /* OK, now walk the new symtable, cacheing symbol properties */ |
| 1314 | { |
| 1315 | register struct external_nlist *sym_pointer; |
| 1316 | register struct external_nlist *sym_end = syms + bfd_get_symcount (abfd); |
| 1317 | register aout_symbol_type *cache_ptr = cached; |
| 1318 | |
| 1319 | /* Run through table and copy values */ |
| 1320 | for (sym_pointer = syms, cache_ptr = cached; |
| 1321 | sym_pointer < sym_end; sym_pointer++, cache_ptr++) |
| 1322 | { |
| 1323 | bfd_vma x = GET_WORD(abfd, sym_pointer->e_strx); |
| 1324 | cache_ptr->symbol.the_bfd = abfd; |
| 1325 | if (x) |
| 1326 | cache_ptr->symbol.name = x + strings; |
| 1327 | else |
| 1328 | cache_ptr->symbol.name = (char *)NULL; |
| 1329 | |
| 1330 | cache_ptr->symbol.value = GET_SWORD(abfd, sym_pointer->e_value); |
| 1331 | cache_ptr->desc = bfd_h_get_16(abfd, sym_pointer->e_desc); |
| 1332 | cache_ptr->other = bfd_h_get_8(abfd, sym_pointer->e_other); |
| 1333 | cache_ptr->type = bfd_h_get_8(abfd, sym_pointer->e_type); |
| 1334 | cache_ptr->symbol.udata = 0; |
| 1335 | translate_from_native_sym_flags (sym_pointer, cache_ptr, abfd); |
| 1336 | } |
| 1337 | } |
| 1338 | |
| 1339 | obj_aout_symbols (abfd) = cached; |
| 1340 | free((PTR)syms); |
| 1341 | |
| 1342 | return true; |
| 1343 | } |
| 1344 | |
| 1345 | |
| 1346 | void |
| 1347 | DEFUN(NAME(aout,write_syms),(abfd), |
| 1348 | bfd *abfd) |
| 1349 | { |
| 1350 | unsigned int count ; |
| 1351 | asymbol **generic = bfd_get_outsymbols (abfd); |
| 1352 | |
| 1353 | bfd_size_type stindex = BYTES_IN_WORD; /* initial string length */ |
| 1354 | |
| 1355 | for (count = 0; count < bfd_get_symcount (abfd); count++) { |
| 1356 | asymbol *g = generic[count]; |
| 1357 | struct external_nlist nsp; |
| 1358 | |
| 1359 | |
| 1360 | if (g->name) { |
| 1361 | unsigned int length = strlen(g->name) +1; |
| 1362 | PUT_WORD (abfd, stindex, (unsigned char *)nsp.e_strx); |
| 1363 | stindex += length; |
| 1364 | } |
| 1365 | else |
| 1366 | |
| 1367 | { |
| 1368 | PUT_WORD (abfd, 0, (unsigned char *)nsp.e_strx); |
| 1369 | } |
| 1370 | |
| 1371 | if (g->the_bfd->xvec->flavour == abfd->xvec->flavour) |
| 1372 | { |
| 1373 | bfd_h_put_16(abfd, aout_symbol(g)->desc, nsp.e_desc); |
| 1374 | bfd_h_put_8(abfd, aout_symbol(g)->other, nsp.e_other); |
| 1375 | bfd_h_put_8(abfd, aout_symbol(g)->type, nsp.e_type); |
| 1376 | } |
| 1377 | else |
| 1378 | { |
| 1379 | bfd_h_put_16(abfd,0, nsp.e_desc); |
| 1380 | bfd_h_put_8(abfd, 0, nsp.e_other); |
| 1381 | bfd_h_put_8(abfd, 0, nsp.e_type); |
| 1382 | } |
| 1383 | |
| 1384 | translate_to_native_sym_flags (&nsp, g, abfd); |
| 1385 | |
| 1386 | bfd_write((PTR)&nsp,1,EXTERNAL_NLIST_SIZE, abfd); |
| 1387 | } |
| 1388 | |
| 1389 | /* Now output the strings. Be sure to put string length into correct |
| 1390 | byte ordering before writing it. */ |
| 1391 | { |
| 1392 | char buffer[BYTES_IN_WORD]; |
| 1393 | PUT_WORD (abfd, stindex, (unsigned char *)buffer); |
| 1394 | |
| 1395 | bfd_write((PTR)buffer, 1, BYTES_IN_WORD, abfd); |
| 1396 | } |
| 1397 | generic = bfd_get_outsymbols(abfd); |
| 1398 | for (count = 0; count < bfd_get_symcount(abfd); count++) |
| 1399 | { |
| 1400 | asymbol *g = *(generic++); |
| 1401 | |
| 1402 | if (g->name) |
| 1403 | { |
| 1404 | size_t length = strlen(g->name)+1; |
| 1405 | bfd_write((PTR)g->name, 1, length, abfd); |
| 1406 | } |
| 1407 | g->KEEPIT = (KEEPITTYPE) count; |
| 1408 | } |
| 1409 | } |
| 1410 | |
| 1411 | |
| 1412 | |
| 1413 | unsigned int |
| 1414 | DEFUN(NAME(aout,get_symtab),(abfd, location), |
| 1415 | bfd *abfd AND |
| 1416 | asymbol **location) |
| 1417 | { |
| 1418 | unsigned int counter = 0; |
| 1419 | aout_symbol_type *symbase; |
| 1420 | |
| 1421 | if (!NAME(aout,slurp_symbol_table)(abfd)) return 0; |
| 1422 | |
| 1423 | for (symbase = obj_aout_symbols(abfd); counter++ < bfd_get_symcount (abfd);) |
| 1424 | *(location++) = (asymbol *)( symbase++); |
| 1425 | *location++ =0; |
| 1426 | return bfd_get_symcount (abfd); |
| 1427 | } |
| 1428 | |
| 1429 | \f |
| 1430 | /* Standard reloc stuff */ |
| 1431 | /* Output standard relocation information to a file in target byte order. */ |
| 1432 | |
| 1433 | void |
| 1434 | DEFUN(NAME(aout,swap_std_reloc_out),(abfd, g, natptr), |
| 1435 | bfd *abfd AND |
| 1436 | arelent *g AND |
| 1437 | struct reloc_std_external *natptr) |
| 1438 | { |
| 1439 | int r_index; |
| 1440 | asymbol *sym = *(g->sym_ptr_ptr); |
| 1441 | int r_extern; |
| 1442 | unsigned int r_length; |
| 1443 | int r_pcrel; |
| 1444 | int r_baserel, r_jmptable, r_relative; |
| 1445 | unsigned int r_addend; |
| 1446 | asection *output_section = sym->section->output_section; |
| 1447 | |
| 1448 | PUT_WORD(abfd, g->address, natptr->r_address); |
| 1449 | |
| 1450 | r_length = g->howto->size ; /* Size as a power of two */ |
| 1451 | r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */ |
| 1452 | /* r_baserel, r_jmptable, r_relative??? FIXME-soon */ |
| 1453 | r_baserel = 0; |
| 1454 | r_jmptable = 0; |
| 1455 | r_relative = 0; |
| 1456 | |
| 1457 | r_addend = g->addend + (*(g->sym_ptr_ptr))->section->output_section->vma; |
| 1458 | |
| 1459 | /* name was clobbered by aout_write_syms to be symbol index */ |
| 1460 | |
| 1461 | /* If this relocation is relative to a symbol then set the |
| 1462 | r_index to the symbols index, and the r_extern bit. |
| 1463 | |
| 1464 | Absolute symbols can come in in two ways, either as an offset |
| 1465 | from the abs section, or as a symbol which has an abs value. |
| 1466 | check for that here |
| 1467 | */ |
| 1468 | |
| 1469 | |
| 1470 | if (output_section == &bfd_com_section |
| 1471 | || output_section == &bfd_abs_section |
| 1472 | || output_section == &bfd_und_section) |
| 1473 | { |
| 1474 | if (bfd_abs_section.symbol == sym) |
| 1475 | { |
| 1476 | /* Whoops, looked like an abs symbol, but is really an offset |
| 1477 | from the abs section */ |
| 1478 | r_index = 0; |
| 1479 | r_extern = 0; |
| 1480 | } |
| 1481 | else |
| 1482 | { |
| 1483 | /* Fill in symbol */ |
| 1484 | r_extern = 1; |
| 1485 | r_index = stoi((*(g->sym_ptr_ptr))->KEEPIT); |
| 1486 | |
| 1487 | } |
| 1488 | } |
| 1489 | else |
| 1490 | { |
| 1491 | /* Just an ordinary section */ |
| 1492 | r_extern = 0; |
| 1493 | r_index = output_section->target_index; |
| 1494 | } |
| 1495 | |
| 1496 | /* now the fun stuff */ |
| 1497 | if (abfd->xvec->header_byteorder_big_p != false) { |
| 1498 | natptr->r_index[0] = r_index >> 16; |
| 1499 | natptr->r_index[1] = r_index >> 8; |
| 1500 | natptr->r_index[2] = r_index; |
| 1501 | natptr->r_type[0] = |
| 1502 | (r_extern? RELOC_STD_BITS_EXTERN_BIG: 0) |
| 1503 | | (r_pcrel? RELOC_STD_BITS_PCREL_BIG: 0) |
| 1504 | | (r_baserel? RELOC_STD_BITS_BASEREL_BIG: 0) |
| 1505 | | (r_jmptable? RELOC_STD_BITS_JMPTABLE_BIG: 0) |
| 1506 | | (r_relative? RELOC_STD_BITS_RELATIVE_BIG: 0) |
| 1507 | | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG); |
| 1508 | } else { |
| 1509 | natptr->r_index[2] = r_index >> 16; |
| 1510 | natptr->r_index[1] = r_index >> 8; |
| 1511 | natptr->r_index[0] = r_index; |
| 1512 | natptr->r_type[0] = |
| 1513 | (r_extern? RELOC_STD_BITS_EXTERN_LITTLE: 0) |
| 1514 | | (r_pcrel? RELOC_STD_BITS_PCREL_LITTLE: 0) |
| 1515 | | (r_baserel? RELOC_STD_BITS_BASEREL_LITTLE: 0) |
| 1516 | | (r_jmptable? RELOC_STD_BITS_JMPTABLE_LITTLE: 0) |
| 1517 | | (r_relative? RELOC_STD_BITS_RELATIVE_LITTLE: 0) |
| 1518 | | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE); |
| 1519 | } |
| 1520 | } |
| 1521 | |
| 1522 | |
| 1523 | /* Extended stuff */ |
| 1524 | /* Output extended relocation information to a file in target byte order. */ |
| 1525 | |
| 1526 | void |
| 1527 | DEFUN(NAME(aout,swap_ext_reloc_out),(abfd, g, natptr), |
| 1528 | bfd *abfd AND |
| 1529 | arelent *g AND |
| 1530 | register struct reloc_ext_external *natptr) |
| 1531 | { |
| 1532 | int r_index; |
| 1533 | int r_extern; |
| 1534 | unsigned int r_type; |
| 1535 | unsigned int r_addend; |
| 1536 | asymbol *sym = *(g->sym_ptr_ptr); |
| 1537 | asection *output_section = sym->section->output_section; |
| 1538 | |
| 1539 | PUT_WORD (abfd, g->address, natptr->r_address); |
| 1540 | |
| 1541 | r_type = (unsigned int) g->howto->type; |
| 1542 | |
| 1543 | r_addend = g->addend + (*(g->sym_ptr_ptr))->section->output_section->vma; |
| 1544 | |
| 1545 | |
| 1546 | /* If this relocation is relative to a symbol then set the |
| 1547 | r_index to the symbols index, and the r_extern bit. |
| 1548 | |
| 1549 | Absolute symbols can come in in two ways, either as an offset |
| 1550 | from the abs section, or as a symbol which has an abs value. |
| 1551 | check for that here |
| 1552 | */ |
| 1553 | |
| 1554 | if (output_section == &bfd_com_section |
| 1555 | || output_section == &bfd_abs_section |
| 1556 | || output_section == &bfd_und_section) |
| 1557 | { |
| 1558 | if (bfd_abs_section.symbol == sym) |
| 1559 | { |
| 1560 | /* Whoops, looked like an abs symbol, but is really an offset |
| 1561 | from the abs section */ |
| 1562 | r_index = 0; |
| 1563 | r_extern = 0; |
| 1564 | } |
| 1565 | else |
| 1566 | { |
| 1567 | r_extern = 1; |
| 1568 | r_index = stoi((*(g->sym_ptr_ptr))->KEEPIT); |
| 1569 | } |
| 1570 | } |
| 1571 | else |
| 1572 | { |
| 1573 | /* Just an ordinary section */ |
| 1574 | r_extern = 0; |
| 1575 | r_index = output_section->target_index; |
| 1576 | } |
| 1577 | |
| 1578 | |
| 1579 | /* now the fun stuff */ |
| 1580 | if (abfd->xvec->header_byteorder_big_p != false) { |
| 1581 | natptr->r_index[0] = r_index >> 16; |
| 1582 | natptr->r_index[1] = r_index >> 8; |
| 1583 | natptr->r_index[2] = r_index; |
| 1584 | natptr->r_type[0] = |
| 1585 | (r_extern? RELOC_EXT_BITS_EXTERN_BIG: 0) |
| 1586 | | (r_type << RELOC_EXT_BITS_TYPE_SH_BIG); |
| 1587 | } else { |
| 1588 | natptr->r_index[2] = r_index >> 16; |
| 1589 | natptr->r_index[1] = r_index >> 8; |
| 1590 | natptr->r_index[0] = r_index; |
| 1591 | natptr->r_type[0] = |
| 1592 | (r_extern? RELOC_EXT_BITS_EXTERN_LITTLE: 0) |
| 1593 | | (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE); |
| 1594 | } |
| 1595 | |
| 1596 | PUT_WORD (abfd, r_addend, natptr->r_addend); |
| 1597 | } |
| 1598 | |
| 1599 | /* BFD deals internally with all things based from the section they're |
| 1600 | in. so, something in 10 bytes into a text section with a base of |
| 1601 | 50 would have a symbol (.text+10) and know .text vma was 50. |
| 1602 | |
| 1603 | Aout keeps all it's symbols based from zero, so the symbol would |
| 1604 | contain 60. This macro subs the base of each section from the value |
| 1605 | to give the true offset from the section */ |
| 1606 | |
| 1607 | |
| 1608 | #define MOVE_ADDRESS(ad) \ |
| 1609 | if (r_extern) { \ |
| 1610 | /* undefined symbol */ \ |
| 1611 | cache_ptr->sym_ptr_ptr = symbols + r_index; \ |
| 1612 | cache_ptr->addend = ad; \ |
| 1613 | } else { \ |
| 1614 | /* defined, section relative. replace symbol with pointer to \ |
| 1615 | symbol which points to section */ \ |
| 1616 | switch (r_index) { \ |
| 1617 | case N_TEXT: \ |
| 1618 | case N_TEXT | N_EXT: \ |
| 1619 | cache_ptr->sym_ptr_ptr = obj_textsec(abfd)->symbol_ptr_ptr; \ |
| 1620 | cache_ptr->addend = ad - su->textsec->vma; \ |
| 1621 | break; \ |
| 1622 | case N_DATA: \ |
| 1623 | case N_DATA | N_EXT: \ |
| 1624 | cache_ptr->sym_ptr_ptr = obj_datasec(abfd)->symbol_ptr_ptr; \ |
| 1625 | cache_ptr->addend = ad - su->datasec->vma; \ |
| 1626 | break; \ |
| 1627 | case N_BSS: \ |
| 1628 | case N_BSS | N_EXT: \ |
| 1629 | cache_ptr->sym_ptr_ptr = obj_bsssec(abfd)->symbol_ptr_ptr; \ |
| 1630 | cache_ptr->addend = ad - su->bsssec->vma; \ |
| 1631 | break; \ |
| 1632 | default: \ |
| 1633 | case N_ABS: \ |
| 1634 | case N_ABS | N_EXT: \ |
| 1635 | cache_ptr->sym_ptr_ptr = bfd_abs_section.symbol_ptr_ptr; \ |
| 1636 | cache_ptr->addend = ad; \ |
| 1637 | break; \ |
| 1638 | } \ |
| 1639 | } \ |
| 1640 | |
| 1641 | void |
| 1642 | DEFUN(NAME(aout,swap_ext_reloc_in), (abfd, bytes, cache_ptr, symbols), |
| 1643 | bfd *abfd AND |
| 1644 | struct reloc_ext_external *bytes AND |
| 1645 | arelent *cache_ptr AND |
| 1646 | asymbol **symbols) |
| 1647 | { |
| 1648 | int r_index; |
| 1649 | int r_extern; |
| 1650 | unsigned int r_type; |
| 1651 | struct aoutdata *su = &(abfd->tdata.aout_data->a); |
| 1652 | |
| 1653 | cache_ptr->address = (GET_SWORD (abfd, bytes->r_address)); |
| 1654 | |
| 1655 | /* now the fun stuff */ |
| 1656 | if (abfd->xvec->header_byteorder_big_p != false) { |
| 1657 | r_index = (bytes->r_index[0] << 16) |
| 1658 | | (bytes->r_index[1] << 8) |
| 1659 | | bytes->r_index[2]; |
| 1660 | r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG)); |
| 1661 | r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) |
| 1662 | >> RELOC_EXT_BITS_TYPE_SH_BIG; |
| 1663 | } else { |
| 1664 | r_index = (bytes->r_index[2] << 16) |
| 1665 | | (bytes->r_index[1] << 8) |
| 1666 | | bytes->r_index[0]; |
| 1667 | r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE)); |
| 1668 | r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) |
| 1669 | >> RELOC_EXT_BITS_TYPE_SH_LITTLE; |
| 1670 | } |
| 1671 | |
| 1672 | cache_ptr->howto = howto_table_ext + r_type; |
| 1673 | MOVE_ADDRESS(GET_SWORD(abfd, bytes->r_addend)); |
| 1674 | } |
| 1675 | |
| 1676 | void |
| 1677 | DEFUN(NAME(aout,swap_std_reloc_in), (abfd, bytes, cache_ptr, symbols), |
| 1678 | bfd *abfd AND |
| 1679 | struct reloc_std_external *bytes AND |
| 1680 | arelent *cache_ptr AND |
| 1681 | asymbol **symbols) |
| 1682 | { |
| 1683 | int r_index; |
| 1684 | int r_extern; |
| 1685 | unsigned int r_length; |
| 1686 | int r_pcrel; |
| 1687 | int r_baserel, r_jmptable, r_relative; |
| 1688 | struct aoutdata *su = &(abfd->tdata.aout_data->a); |
| 1689 | |
| 1690 | cache_ptr->address = (int32_type)(bfd_h_get_32 (abfd, bytes->r_address)); |
| 1691 | |
| 1692 | /* now the fun stuff */ |
| 1693 | if (abfd->xvec->header_byteorder_big_p != false) { |
| 1694 | r_index = (bytes->r_index[0] << 16) |
| 1695 | | (bytes->r_index[1] << 8) |
| 1696 | | bytes->r_index[2]; |
| 1697 | r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_BIG)); |
| 1698 | r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_BIG)); |
| 1699 | r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_BIG)); |
| 1700 | r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG)); |
| 1701 | r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG)); |
| 1702 | r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_BIG) |
| 1703 | >> RELOC_STD_BITS_LENGTH_SH_BIG; |
| 1704 | } else { |
| 1705 | r_index = (bytes->r_index[2] << 16) |
| 1706 | | (bytes->r_index[1] << 8) |
| 1707 | | bytes->r_index[0]; |
| 1708 | r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE)); |
| 1709 | r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); |
| 1710 | r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE)); |
| 1711 | r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE)); |
| 1712 | r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE)); |
| 1713 | r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE) |
| 1714 | >> RELOC_STD_BITS_LENGTH_SH_LITTLE; |
| 1715 | } |
| 1716 | |
| 1717 | cache_ptr->howto = howto_table_std + r_length + 4 * r_pcrel; |
| 1718 | /* FIXME-soon: Roll baserel, jmptable, relative bits into howto setting */ |
| 1719 | |
| 1720 | MOVE_ADDRESS(0); |
| 1721 | } |
| 1722 | |
| 1723 | /* Reloc hackery */ |
| 1724 | |
| 1725 | boolean |
| 1726 | DEFUN(NAME(aout,slurp_reloc_table),(abfd, asect, symbols), |
| 1727 | bfd *abfd AND |
| 1728 | sec_ptr asect AND |
| 1729 | asymbol **symbols) |
| 1730 | { |
| 1731 | unsigned int count; |
| 1732 | bfd_size_type reloc_size; |
| 1733 | PTR relocs; |
| 1734 | arelent *reloc_cache; |
| 1735 | size_t each_size; |
| 1736 | |
| 1737 | if (asect->relocation) return true; |
| 1738 | |
| 1739 | if (asect->flags & SEC_CONSTRUCTOR) return true; |
| 1740 | |
| 1741 | if (asect == obj_datasec (abfd)) { |
| 1742 | reloc_size = exec_hdr(abfd)->a_drsize; |
| 1743 | goto doit; |
| 1744 | } |
| 1745 | |
| 1746 | if (asect == obj_textsec (abfd)) { |
| 1747 | reloc_size = exec_hdr(abfd)->a_trsize; |
| 1748 | goto doit; |
| 1749 | } |
| 1750 | |
| 1751 | bfd_error = invalid_operation; |
| 1752 | return false; |
| 1753 | |
| 1754 | doit: |
| 1755 | bfd_seek (abfd, asect->rel_filepos, SEEK_SET); |
| 1756 | each_size = obj_reloc_entry_size (abfd); |
| 1757 | |
| 1758 | count = reloc_size / each_size; |
| 1759 | |
| 1760 | |
| 1761 | reloc_cache = (arelent *) bfd_zalloc (abfd, (size_t)(count * sizeof |
| 1762 | (arelent))); |
| 1763 | if (!reloc_cache) { |
| 1764 | nomem: |
| 1765 | bfd_error = no_memory; |
| 1766 | return false; |
| 1767 | } |
| 1768 | |
| 1769 | relocs = (PTR) bfd_alloc (abfd, reloc_size); |
| 1770 | if (!relocs) { |
| 1771 | bfd_release (abfd, reloc_cache); |
| 1772 | goto nomem; |
| 1773 | } |
| 1774 | |
| 1775 | if (bfd_read (relocs, 1, reloc_size, abfd) != reloc_size) { |
| 1776 | bfd_release (abfd, relocs); |
| 1777 | bfd_release (abfd, reloc_cache); |
| 1778 | bfd_error = system_call_error; |
| 1779 | return false; |
| 1780 | } |
| 1781 | |
| 1782 | if (each_size == RELOC_EXT_SIZE) { |
| 1783 | register struct reloc_ext_external *rptr = (struct reloc_ext_external *) relocs; |
| 1784 | unsigned int counter = 0; |
| 1785 | arelent *cache_ptr = reloc_cache; |
| 1786 | |
| 1787 | for (; counter < count; counter++, rptr++, cache_ptr++) { |
| 1788 | NAME(aout,swap_ext_reloc_in)(abfd, rptr, cache_ptr, symbols); |
| 1789 | } |
| 1790 | } else { |
| 1791 | register struct reloc_std_external *rptr = (struct reloc_std_external*) relocs; |
| 1792 | unsigned int counter = 0; |
| 1793 | arelent *cache_ptr = reloc_cache; |
| 1794 | |
| 1795 | for (; counter < count; counter++, rptr++, cache_ptr++) { |
| 1796 | NAME(aout,swap_std_reloc_in)(abfd, rptr, cache_ptr, symbols); |
| 1797 | } |
| 1798 | |
| 1799 | } |
| 1800 | |
| 1801 | bfd_release (abfd,relocs); |
| 1802 | asect->relocation = reloc_cache; |
| 1803 | asect->reloc_count = count; |
| 1804 | return true; |
| 1805 | } |
| 1806 | |
| 1807 | |
| 1808 | |
| 1809 | /* Write out a relocation section into an object file. */ |
| 1810 | |
| 1811 | boolean |
| 1812 | DEFUN(NAME(aout,squirt_out_relocs),(abfd, section), |
| 1813 | bfd *abfd AND |
| 1814 | asection *section) |
| 1815 | { |
| 1816 | arelent **generic; |
| 1817 | unsigned char *native, *natptr; |
| 1818 | size_t each_size; |
| 1819 | |
| 1820 | unsigned int count = section->reloc_count; |
| 1821 | size_t natsize; |
| 1822 | |
| 1823 | if (count == 0) return true; |
| 1824 | |
| 1825 | each_size = obj_reloc_entry_size (abfd); |
| 1826 | natsize = each_size * count; |
| 1827 | native = (unsigned char *) bfd_zalloc (abfd, natsize); |
| 1828 | if (!native) { |
| 1829 | bfd_error = no_memory; |
| 1830 | return false; |
| 1831 | } |
| 1832 | |
| 1833 | generic = section->orelocation; |
| 1834 | |
| 1835 | if (each_size == RELOC_EXT_SIZE) |
| 1836 | { |
| 1837 | for (natptr = native; |
| 1838 | count != 0; |
| 1839 | --count, natptr += each_size, ++generic) |
| 1840 | NAME(aout,swap_ext_reloc_out) (abfd, *generic, (struct reloc_ext_external *)natptr); |
| 1841 | } |
| 1842 | else |
| 1843 | { |
| 1844 | for (natptr = native; |
| 1845 | count != 0; |
| 1846 | --count, natptr += each_size, ++generic) |
| 1847 | NAME(aout,swap_std_reloc_out)(abfd, *generic, (struct reloc_std_external *)natptr); |
| 1848 | } |
| 1849 | |
| 1850 | if ( bfd_write ((PTR) native, 1, natsize, abfd) != natsize) { |
| 1851 | bfd_release(abfd, native); |
| 1852 | return false; |
| 1853 | } |
| 1854 | bfd_release (abfd, native); |
| 1855 | |
| 1856 | return true; |
| 1857 | } |
| 1858 | |
| 1859 | /* This is stupid. This function should be a boolean predicate */ |
| 1860 | unsigned int |
| 1861 | DEFUN(NAME(aout,canonicalize_reloc),(abfd, section, relptr, symbols), |
| 1862 | bfd *abfd AND |
| 1863 | sec_ptr section AND |
| 1864 | arelent **relptr AND |
| 1865 | asymbol **symbols) |
| 1866 | { |
| 1867 | arelent *tblptr = section->relocation; |
| 1868 | unsigned int count; |
| 1869 | |
| 1870 | if (!(tblptr || NAME(aout,slurp_reloc_table)(abfd, section, symbols))) |
| 1871 | return 0; |
| 1872 | |
| 1873 | if (section->flags & SEC_CONSTRUCTOR) { |
| 1874 | arelent_chain *chain = section->constructor_chain; |
| 1875 | for (count = 0; count < section->reloc_count; count ++) { |
| 1876 | *relptr ++ = &chain->relent; |
| 1877 | chain = chain->next; |
| 1878 | } |
| 1879 | } |
| 1880 | else { |
| 1881 | tblptr = section->relocation; |
| 1882 | if (!tblptr) return 0; |
| 1883 | |
| 1884 | for (count = 0; count++ < section->reloc_count;) |
| 1885 | { |
| 1886 | *relptr++ = tblptr++; |
| 1887 | } |
| 1888 | } |
| 1889 | *relptr = 0; |
| 1890 | |
| 1891 | return section->reloc_count; |
| 1892 | } |
| 1893 | |
| 1894 | unsigned int |
| 1895 | DEFUN(NAME(aout,get_reloc_upper_bound),(abfd, asect), |
| 1896 | bfd *abfd AND |
| 1897 | sec_ptr asect) |
| 1898 | { |
| 1899 | if (bfd_get_format (abfd) != bfd_object) { |
| 1900 | bfd_error = invalid_operation; |
| 1901 | return 0; |
| 1902 | } |
| 1903 | if (asect->flags & SEC_CONSTRUCTOR) { |
| 1904 | return (sizeof (arelent *) * (asect->reloc_count+1)); |
| 1905 | } |
| 1906 | |
| 1907 | |
| 1908 | if (asect == obj_datasec (abfd)) |
| 1909 | return (sizeof (arelent *) * |
| 1910 | ((exec_hdr(abfd)->a_drsize / obj_reloc_entry_size (abfd)) |
| 1911 | +1)); |
| 1912 | |
| 1913 | if (asect == obj_textsec (abfd)) |
| 1914 | return (sizeof (arelent *) * |
| 1915 | ((exec_hdr(abfd)->a_trsize / obj_reloc_entry_size (abfd)) |
| 1916 | +1)); |
| 1917 | |
| 1918 | bfd_error = invalid_operation; |
| 1919 | return 0; |
| 1920 | } |
| 1921 | |
| 1922 | \f |
| 1923 | unsigned int |
| 1924 | DEFUN(NAME(aout,get_symtab_upper_bound),(abfd), |
| 1925 | bfd *abfd) |
| 1926 | { |
| 1927 | if (!NAME(aout,slurp_symbol_table)(abfd)) return 0; |
| 1928 | |
| 1929 | return (bfd_get_symcount (abfd)+1) * (sizeof (aout_symbol_type *)); |
| 1930 | } |
| 1931 | alent * |
| 1932 | DEFUN(NAME(aout,get_lineno),(ignore_abfd, ignore_symbol), |
| 1933 | bfd *ignore_abfd AND |
| 1934 | asymbol *ignore_symbol) |
| 1935 | { |
| 1936 | return (alent *)NULL; |
| 1937 | } |
| 1938 | |
| 1939 | |
| 1940 | void |
| 1941 | DEFUN(NAME(aout,print_symbol),(ignore_abfd, afile, symbol, how), |
| 1942 | bfd *ignore_abfd AND |
| 1943 | PTR afile AND |
| 1944 | asymbol *symbol AND |
| 1945 | bfd_print_symbol_type how) |
| 1946 | { |
| 1947 | FILE *file = (FILE *)afile; |
| 1948 | |
| 1949 | switch (how) { |
| 1950 | case bfd_print_symbol_name: |
| 1951 | if (symbol->name) |
| 1952 | fprintf(file,"%s", symbol->name); |
| 1953 | break; |
| 1954 | case bfd_print_symbol_more: |
| 1955 | fprintf(file,"%4x %2x %2x",(unsigned)(aout_symbol(symbol)->desc & 0xffff), |
| 1956 | (unsigned)(aout_symbol(symbol)->other & 0xff), |
| 1957 | (unsigned)(aout_symbol(symbol)->type)); |
| 1958 | break; |
| 1959 | case bfd_print_symbol_all: |
| 1960 | { |
| 1961 | CONST char *section_name = symbol->section->name; |
| 1962 | |
| 1963 | |
| 1964 | bfd_print_symbol_vandf((PTR)file,symbol); |
| 1965 | |
| 1966 | fprintf(file," %-5s %04x %02x %02x", |
| 1967 | section_name, |
| 1968 | (unsigned)(aout_symbol(symbol)->desc & 0xffff), |
| 1969 | (unsigned)(aout_symbol(symbol)->other & 0xff), |
| 1970 | (unsigned)(aout_symbol(symbol)->type & 0xff)); |
| 1971 | if (symbol->name) |
| 1972 | fprintf(file," %s", symbol->name); |
| 1973 | } |
| 1974 | break; |
| 1975 | case bfd_print_symbol_nm: |
| 1976 | { |
| 1977 | int section_code = bfd_decode_symclass (symbol); |
| 1978 | |
| 1979 | if (section_code == 'U') |
| 1980 | fprintf(file, " "); |
| 1981 | else |
| 1982 | fprintf_vma(file, symbol->value+symbol->section->vma); |
| 1983 | if (section_code == '?') |
| 1984 | { |
| 1985 | int type_code = aout_symbol(symbol)->type & 0xff; |
| 1986 | char *stab_name = aout_stab_name(type_code); |
| 1987 | char buf[10]; |
| 1988 | if (stab_name == NULL) |
| 1989 | { |
| 1990 | sprintf(buf, "(%d)", type_code); |
| 1991 | stab_name = buf; |
| 1992 | } |
| 1993 | fprintf(file," - %02x %04x %5s", |
| 1994 | (unsigned)(aout_symbol(symbol)->other & 0xff), |
| 1995 | (unsigned)(aout_symbol(symbol)->desc & 0xffff), |
| 1996 | stab_name); |
| 1997 | } |
| 1998 | else |
| 1999 | fprintf(file," %c", section_code); |
| 2000 | if (symbol->name) |
| 2001 | fprintf(file," %s", symbol->name); |
| 2002 | } |
| 2003 | break; |
| 2004 | } |
| 2005 | } |
| 2006 | |
| 2007 | /* |
| 2008 | provided a BFD, a section and an offset into the section, calculate |
| 2009 | and return the name of the source file and the line nearest to the |
| 2010 | wanted location. |
| 2011 | */ |
| 2012 | |
| 2013 | boolean |
| 2014 | DEFUN(NAME(aout,find_nearest_line),(abfd, |
| 2015 | section, |
| 2016 | symbols, |
| 2017 | offset, |
| 2018 | filename_ptr, |
| 2019 | functionname_ptr, |
| 2020 | line_ptr), |
| 2021 | bfd *abfd AND |
| 2022 | asection *section AND |
| 2023 | asymbol **symbols AND |
| 2024 | bfd_vma offset AND |
| 2025 | CONST char **filename_ptr AND |
| 2026 | CONST char **functionname_ptr AND |
| 2027 | unsigned int *line_ptr) |
| 2028 | { |
| 2029 | /* Run down the file looking for the filename, function and linenumber */ |
| 2030 | asymbol **p; |
| 2031 | static char buffer[100]; |
| 2032 | static char filename_buffer[200]; |
| 2033 | CONST char *directory_name = NULL; |
| 2034 | CONST char *main_file_name = NULL; |
| 2035 | CONST char *current_file_name = NULL; |
| 2036 | CONST char *line_file_name = NULL; /* Value of current_file_name at line number. */ |
| 2037 | bfd_vma high_line_vma = ~0; |
| 2038 | bfd_vma low_func_vma = 0; |
| 2039 | asymbol *func = 0; |
| 2040 | *filename_ptr = abfd->filename; |
| 2041 | *functionname_ptr = 0; |
| 2042 | *line_ptr = 0; |
| 2043 | if (symbols != (asymbol **)NULL) { |
| 2044 | for (p = symbols; *p; p++) { |
| 2045 | aout_symbol_type *q = (aout_symbol_type *)(*p); |
| 2046 | next: |
| 2047 | switch (q->type){ |
| 2048 | case N_SO: |
| 2049 | main_file_name = current_file_name = q->symbol.name; |
| 2050 | /* Look ahead to next symbol to check if that too is an N_SO. */ |
| 2051 | p++; |
| 2052 | if (*p == NULL) |
| 2053 | break; |
| 2054 | q = (aout_symbol_type *)(*p); |
| 2055 | if (q->type != (int)N_SO) |
| 2056 | goto next; |
| 2057 | |
| 2058 | /* Found a second N_SO First is directory; second is filename. */ |
| 2059 | directory_name = current_file_name; |
| 2060 | main_file_name = current_file_name = q->symbol.name; |
| 2061 | if (obj_textsec(abfd) != section) |
| 2062 | goto done; |
| 2063 | break; |
| 2064 | case N_SOL: |
| 2065 | current_file_name = q->symbol.name; |
| 2066 | break; |
| 2067 | |
| 2068 | case N_SLINE: |
| 2069 | |
| 2070 | case N_DSLINE: |
| 2071 | case N_BSLINE: |
| 2072 | /* We'll keep this if it resolves nearer than the one we have already */ |
| 2073 | if (q->symbol.value >= offset && |
| 2074 | q->symbol.value < high_line_vma) { |
| 2075 | *line_ptr = q->desc; |
| 2076 | high_line_vma = q->symbol.value; |
| 2077 | line_file_name = current_file_name; |
| 2078 | } |
| 2079 | break; |
| 2080 | case N_FUN: |
| 2081 | { |
| 2082 | /* We'll keep this if it is nearer than the one we have already */ |
| 2083 | if (q->symbol.value >= low_func_vma && |
| 2084 | q->symbol.value <= offset) { |
| 2085 | low_func_vma = q->symbol.value; |
| 2086 | func = (asymbol *)q; |
| 2087 | } |
| 2088 | if (*line_ptr && func) { |
| 2089 | CONST char *function = func->name; |
| 2090 | char *p; |
| 2091 | strncpy(buffer, function, sizeof(buffer)-1); |
| 2092 | buffer[sizeof(buffer)-1] = 0; |
| 2093 | /* Have to remove : stuff */ |
| 2094 | p = strchr(buffer,':'); |
| 2095 | if (p != NULL) { *p = '\0'; } |
| 2096 | *functionname_ptr = buffer; |
| 2097 | goto done; |
| 2098 | |
| 2099 | } |
| 2100 | } |
| 2101 | break; |
| 2102 | } |
| 2103 | } |
| 2104 | } |
| 2105 | |
| 2106 | done: |
| 2107 | if (*line_ptr) |
| 2108 | main_file_name = line_file_name; |
| 2109 | if (main_file_name) { |
| 2110 | if (main_file_name[0] == '/' || directory_name == NULL) |
| 2111 | *filename_ptr = main_file_name; |
| 2112 | else { |
| 2113 | sprintf(filename_buffer, "%.140s%.50s", |
| 2114 | directory_name, main_file_name); |
| 2115 | *filename_ptr = filename_buffer; |
| 2116 | } |
| 2117 | } |
| 2118 | return true; |
| 2119 | |
| 2120 | } |
| 2121 | |
| 2122 | int |
| 2123 | DEFUN(NAME(aout,sizeof_headers),(abfd, execable), |
| 2124 | bfd *abfd AND |
| 2125 | boolean execable) |
| 2126 | { |
| 2127 | return adata(abfd).exec_bytes_size; |
| 2128 | } |