| 1 | |
| 2 | /* BFD semi-generic back-end for a.out binaries */ |
| 3 | |
| 4 | /* Copyright (C) 1990, 1991 Free Software Foundation, Inc. |
| 5 | |
| 6 | This file is part of BFD, the Binary File Diddler. |
| 7 | |
| 8 | BFD is free software; you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation; either version 1, or (at your option) |
| 11 | any later version. |
| 12 | |
| 13 | BFD is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with BFD; see the file COPYING. If not, write to |
| 20 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ |
| 21 | |
| 22 | |
| 23 | /*doc* |
| 24 | @section a.out backends |
| 25 | |
| 26 | BFD supports a number of different flavours of a.out format, though |
| 27 | the major differences are only the sizes of the structures on disk, |
| 28 | and the shape of the relocation information. |
| 29 | |
| 30 | The support is split into a basic support file @code{aoutx.h} and |
| 31 | other files which derive functions from the base. One derivation file |
| 32 | is @code{aoutf1.h} (for a.out flavour 1), and adds to the basic a.out |
| 33 | functions support for sun3, sun4, 386 and 29k a.out files, to create a |
| 34 | target jump vector for a specific target. |
| 35 | |
| 36 | This information is further split out into more specific files for each |
| 37 | machine, including @code{sunos.c} - for sun3 and sun4 and |
| 38 | @code{demo64} for a demonstration of a 64 bit a.out format. |
| 39 | |
| 40 | The base file @code{aoutx.h} defines general mechanisms for reading |
| 41 | and writing records to and from disk, and various other methods which |
| 42 | bfd requires. It is included by @code{aout32.c} and @code{aout64.c} to |
| 43 | form the names aout_32_swap_exec_header_in, |
| 44 | aout_64_swap_exec_header_in, etc. |
| 45 | |
| 46 | As an example, this is what goes on to make the back end for a sun4, from aout32.c |
| 47 | |
| 48 | @example |
| 49 | #define ARCH_SIZE 32 |
| 50 | #include "aoutx.h" |
| 51 | @end example |
| 52 | |
| 53 | Which exports names: |
| 54 | @example |
| 55 | ... |
| 56 | aout_32_canonicalize_reloc |
| 57 | aout_32_find_nearest_line |
| 58 | aout_32_get_lineno |
| 59 | aout_32_get_reloc_upper_bound |
| 60 | ... |
| 61 | @end example |
| 62 | |
| 63 | from sunos.c |
| 64 | |
| 65 | @example |
| 66 | #define ARCH 32 |
| 67 | #define TARGET_NAME "a.out-sunos-big" |
| 68 | #define VECNAME sunos_big_vec |
| 69 | #include "aoutf1.h" |
| 70 | @end example |
| 71 | requires all the names from aout32.c, and produces the jump vector |
| 72 | |
| 73 | @example |
| 74 | sunos_big_vec |
| 75 | @end example |
| 76 | |
| 77 | */ |
| 78 | |
| 79 | #include <sysdep.h> |
| 80 | #include <ansidecl.h> |
| 81 | |
| 82 | |
| 83 | #include "bfd.h" |
| 84 | struct external_exec; |
| 85 | #include "libaout.h" |
| 86 | #include "libbfd.h" |
| 87 | #include "aout64.h" |
| 88 | #include "stab.gnu.h" |
| 89 | #include "ar.h" |
| 90 | |
| 91 | void (*bfd_error_trap)(); |
| 92 | |
| 93 | /*doc* |
| 94 | @subsection relocations |
| 95 | The file @code{aoutx.h} caters for both the @emph{standard} and |
| 96 | @emph{extended} forms of a.out relocation records. |
| 97 | |
| 98 | The standard records are characterised by containing only an address, |
| 99 | a symbol index and a type field. The extended records (used on 29ks |
| 100 | and sparcs) also have a full integer for an addend. |
| 101 | */ |
| 102 | #define CTOR_TABLE_RELOC_IDX 2 |
| 103 | static reloc_howto_type howto_table_ext[] = |
| 104 | { |
| 105 | HOWTO(RELOC_8, 0, 0, 8, false, 0, true, true,0,"8", false, 0,0x000000ff, false), |
| 106 | HOWTO(RELOC_16, 0, 1, 16, false, 0, true, true,0,"16", false, 0,0x0000ffff, false), |
| 107 | HOWTO(RELOC_32, 0, 2, 32, false, 0, true, true,0,"32", false, 0,0xffffffff, false), |
| 108 | HOWTO(RELOC_DISP8, 0, 0, 8, true, 0, false, true,0,"DISP8", false, 0,0x000000ff, false), |
| 109 | HOWTO(RELOC_DISP16, 0, 1, 16, true, 0, false, true,0,"DISP16", false, 0,0x0000ffff, false), |
| 110 | HOWTO(RELOC_DISP32, 0, 2, 32, true, 0, false, true,0,"DISP32", false, 0,0xffffffff, false), |
| 111 | HOWTO(RELOC_WDISP30,2, 2, 30, true, 0, false, true,0,"WDISP30", false, 0,0x3fffffff, false), |
| 112 | HOWTO(RELOC_WDISP22,2, 2, 22, true, 0, false, true,0,"WDISP22", false, 0,0x003fffff, false), |
| 113 | HOWTO(RELOC_HI22, 10, 2, 22, false, 0, false, true,0,"HI22", false, 0,0x003fffff, false), |
| 114 | HOWTO(RELOC_22, 0, 2, 22, false, 0, false, true,0,"22", false, 0,0x003fffff, false), |
| 115 | HOWTO(RELOC_13, 0, 2, 13, false, 0, false, true,0,"13", false, 0,0x00001fff, false), |
| 116 | HOWTO(RELOC_LO10, 0, 2, 10, false, 0, false, true,0,"LO10", false, 0,0x000003ff, false), |
| 117 | HOWTO(RELOC_SFA_BASE,0, 2, 32, false, 0, false, true,0,"SFA_BASE", false, 0,0xffffffff, false), |
| 118 | HOWTO(RELOC_SFA_OFF13,0,2, 32, false, 0, false, true,0,"SFA_OFF13",false, 0,0xffffffff, false), |
| 119 | HOWTO(RELOC_BASE10, 0, 2, 16, false, 0, false, true,0,"BASE10", false, 0,0x0000ffff, false), |
| 120 | HOWTO(RELOC_BASE13, 0, 2, 13, false, 0, false, true,0,"BASE13", false, 0,0x00001fff, false), |
| 121 | HOWTO(RELOC_BASE22, 0, 2, 0, false, 0, false, true,0,"BASE22", false, 0,0x00000000, false), |
| 122 | HOWTO(RELOC_PC10, 0, 2, 10, false, 0, false, true,0,"PC10", false, 0,0x000003ff, false), |
| 123 | HOWTO(RELOC_PC22, 0, 2, 22, false, 0, false, true,0,"PC22", false, 0,0x003fffff, false), |
| 124 | HOWTO(RELOC_JMP_TBL,0, 2, 32, false, 0, false, true,0,"JMP_TBL", false, 0,0xffffffff, false), |
| 125 | HOWTO(RELOC_SEGOFF16,0, 2, 0, false, 0, false, true,0,"SEGOFF16", false, 0,0x00000000, false), |
| 126 | HOWTO(RELOC_GLOB_DAT,0, 2, 0, false, 0, false, true,0,"GLOB_DAT", false, 0,0x00000000, false), |
| 127 | HOWTO(RELOC_JMP_SLOT,0, 2, 0, false, 0, false, true,0,"JMP_SLOT", false, 0,0x00000000, false), |
| 128 | HOWTO(RELOC_RELATIVE,0, 2, 0, false, 0, false, true,0,"RELATIVE", false, 0,0x00000000, false), |
| 129 | HOWTO(RELOC_JUMPTARG,2, 13, 16, true, 0, false, true,0,"JUMPTARG", false, 0,0x0000ffff, false), |
| 130 | HOWTO(RELOC_CONST, 0, 13, 16, false, 0, false, true,0,"CONST", false, 0,0x0000ffff, false), |
| 131 | HOWTO(RELOC_CONSTH, 16, 13, 16, false, 0, false, true,0,"CONSTH", false, 0,0x0000ffff, false), |
| 132 | }; |
| 133 | |
| 134 | /* Convert standard reloc records to "arelent" format (incl byte swap). */ |
| 135 | |
| 136 | static reloc_howto_type howto_table_std[] = { |
| 137 | /* type rs size bsz pcrel bitpos abs ovrf sf name part_inpl readmask setmask pcdone */ |
| 138 | HOWTO( 0, 0, 0, 8, false, 0, true, true,0,"8", true, 0x000000ff,0x000000ff, false), |
| 139 | HOWTO( 1, 0, 1, 16, false, 0, true, true,0,"16", true, 0x0000ffff,0x0000ffff, false), |
| 140 | HOWTO( 2, 0, 2, 32, false, 0, true, true,0,"32", true, 0xffffffff,0xffffffff, false), |
| 141 | HOWTO( 3, 0, 3, 64, false, 0, true, true,0,"64", true, 0xdeaddead,0xdeaddead, false), |
| 142 | HOWTO( 4, 0, 0, 8, true, 0, false, true,0,"DISP8", true, 0x000000ff,0x000000ff, false), |
| 143 | HOWTO( 5, 0, 1, 16, true, 0, false, true,0,"DISP16", true, 0x0000ffff,0x0000ffff, false), |
| 144 | HOWTO( 6, 0, 2, 32, true, 0, false, true,0,"DISP32", true, 0xffffffff,0xffffffff, false), |
| 145 | HOWTO( 7, 0, 3, 64, true, 0, false, true,0,"DISP64", true, 0xfeedface,0xfeedface, false), |
| 146 | }; |
| 147 | |
| 148 | |
| 149 | bfd_error_vector_type bfd_error_vector; |
| 150 | |
| 151 | /*doc* |
| 152 | @subsection Internal Entry Points |
| 153 | @code{aoutx.h} exports several routines for accessing the contents of |
| 154 | an a.out file, which are gathered and exported in turn by various |
| 155 | format specific files (eg sunos.c). |
| 156 | */ |
| 157 | |
| 158 | /*doc* |
| 159 | *i aout_<size>_swap_exec_header_in |
| 160 | Swaps the information in an executable header taken from a raw byte stream memory image, |
| 161 | into the internal exec_header structure. |
| 162 | *; PROTO(void, aout_<size>_swap_exec_header_in, |
| 163 | (bfd *abfd, |
| 164 | struct external_exec *raw_bytes, |
| 165 | struct internal_exec *execp)); |
| 166 | */ |
| 167 | |
| 168 | void |
| 169 | DEFUN(NAME(aout,swap_exec_header_in),(abfd, raw_bytes, execp), |
| 170 | bfd *abfd AND |
| 171 | struct external_exec *raw_bytes AND |
| 172 | struct internal_exec *execp) |
| 173 | { |
| 174 | struct external_exec *bytes = (struct external_exec *)raw_bytes; |
| 175 | |
| 176 | /* Now fill in fields in the execp, from the bytes in the raw data. */ |
| 177 | execp->a_info = bfd_h_get_32 (abfd, bytes->e_info); |
| 178 | execp->a_text = GET_WORD (abfd, bytes->e_text); |
| 179 | execp->a_data = GET_WORD (abfd, bytes->e_data); |
| 180 | execp->a_bss = GET_WORD (abfd, bytes->e_bss); |
| 181 | execp->a_syms = GET_WORD (abfd, bytes->e_syms); |
| 182 | execp->a_entry = GET_WORD (abfd, bytes->e_entry); |
| 183 | execp->a_trsize = GET_WORD (abfd, bytes->e_trsize); |
| 184 | execp->a_drsize = GET_WORD (abfd, bytes->e_drsize); |
| 185 | } |
| 186 | |
| 187 | /*doc* |
| 188 | *i aout_<size>_swap_exec_header_out |
| 189 | Swaps the information in an internal exec header structure into the |
| 190 | supplied buffer ready for writing to disk. |
| 191 | *; PROTO(void, aout_<size>_swap_exec_header_out, |
| 192 | (bfd *abfd, |
| 193 | struct internal_exec *execp, |
| 194 | struct external_exec *raw_bytes)); |
| 195 | */ |
| 196 | void |
| 197 | DEFUN(NAME(aout,swap_exec_header_out),(abfd, execp, raw_bytes), |
| 198 | bfd *abfd AND |
| 199 | struct internal_exec *execp AND |
| 200 | struct external_exec *raw_bytes) |
| 201 | { |
| 202 | struct external_exec *bytes = (struct external_exec *)raw_bytes; |
| 203 | |
| 204 | /* Now fill in fields in the raw data, from the fields in the exec struct. */ |
| 205 | bfd_h_put_32 (abfd, execp->a_info , bytes->e_info); |
| 206 | PUT_WORD (abfd, execp->a_text , bytes->e_text); |
| 207 | PUT_WORD (abfd, execp->a_data , bytes->e_data); |
| 208 | PUT_WORD (abfd, execp->a_bss , bytes->e_bss); |
| 209 | PUT_WORD (abfd, execp->a_syms , bytes->e_syms); |
| 210 | PUT_WORD (abfd, execp->a_entry , bytes->e_entry); |
| 211 | PUT_WORD (abfd, execp->a_trsize, bytes->e_trsize); |
| 212 | PUT_WORD (abfd, execp->a_drsize, bytes->e_drsize); |
| 213 | } |
| 214 | |
| 215 | struct container { |
| 216 | struct aoutdata a; |
| 217 | struct internal_exec e; |
| 218 | }; |
| 219 | |
| 220 | |
| 221 | /*doc* |
| 222 | *i aout_<size>_some_aout_object_p |
| 223 | |
| 224 | Some A.OUT variant thinks that the file whose format we're checking |
| 225 | is an a.out file. Do some more checking, and set up for access if |
| 226 | it really is. Call back to the calling environments "finish up" |
| 227 | function just before returning, to handle any last-minute setup. |
| 228 | |
| 229 | *; PROTO(bfd_target *, aout_<size>_some_aout_object_p, |
| 230 | (bfd *abfd, |
| 231 | bfd_target *(*callback_to_real_object_p)())); |
| 232 | */ |
| 233 | |
| 234 | bfd_target * |
| 235 | DEFUN(NAME(aout,some_aout_object_p),(abfd, callback_to_real_object_p), |
| 236 | bfd *abfd AND |
| 237 | bfd_target *(*callback_to_real_object_p) ()) |
| 238 | { |
| 239 | struct external_exec exec_bytes; |
| 240 | struct internal_exec *execp; |
| 241 | struct container *rawptr; |
| 242 | |
| 243 | if (bfd_seek (abfd, 0L, false) < 0) { |
| 244 | bfd_error = system_call_error; |
| 245 | return 0; |
| 246 | } |
| 247 | |
| 248 | if (bfd_read ((PTR) &exec_bytes, 1, EXEC_BYTES_SIZE, abfd) |
| 249 | != EXEC_BYTES_SIZE) { |
| 250 | bfd_error = wrong_format; |
| 251 | return 0; |
| 252 | } |
| 253 | |
| 254 | /* Use an intermediate variable for clarity */ |
| 255 | rawptr = (struct container *) bfd_zalloc (abfd, sizeof (struct container)); |
| 256 | |
| 257 | if (rawptr == NULL) { |
| 258 | bfd_error = no_memory; |
| 259 | return 0; |
| 260 | } |
| 261 | |
| 262 | set_tdata (abfd, rawptr); |
| 263 | exec_hdr (abfd) = execp = &(rawptr->e); |
| 264 | NAME(aout,swap_exec_header_in)(abfd, &exec_bytes, execp); |
| 265 | |
| 266 | /* Set the file flags */ |
| 267 | abfd->flags = NO_FLAGS; |
| 268 | if (execp->a_drsize || execp->a_trsize) |
| 269 | abfd->flags |= HAS_RELOC; |
| 270 | if (execp->a_entry) |
| 271 | abfd->flags |= EXEC_P; |
| 272 | if (execp->a_syms) |
| 273 | abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS; |
| 274 | |
| 275 | if (N_MAGIC (*execp) == ZMAGIC) abfd->flags |= D_PAGED; |
| 276 | if (N_MAGIC (*execp) == NMAGIC) abfd->flags |= WP_TEXT; |
| 277 | |
| 278 | bfd_get_start_address (abfd) = execp->a_entry; |
| 279 | |
| 280 | obj_aout_symbols (abfd) = (aout_symbol_type *)NULL; |
| 281 | bfd_get_symcount (abfd) = execp->a_syms / sizeof (struct external_nlist); |
| 282 | |
| 283 | /* Set the default architecture and machine type. These can be |
| 284 | overridden in the callback routine. */ |
| 285 | abfd->obj_arch = bfd_arch_unknown; |
| 286 | abfd->obj_machine = 0; |
| 287 | |
| 288 | /* The default relocation entry size is that of traditional V7 Unix. */ |
| 289 | obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; |
| 290 | |
| 291 | /* create the sections. This is raunchy, but bfd_close wants to reclaim |
| 292 | them */ |
| 293 | obj_textsec (abfd) = (asection *)NULL; |
| 294 | obj_datasec (abfd) = (asection *)NULL; |
| 295 | obj_bsssec (abfd) = (asection *)NULL; |
| 296 | (void)bfd_make_section(abfd, ".text"); |
| 297 | (void)bfd_make_section(abfd, ".data"); |
| 298 | (void)bfd_make_section(abfd, ".bss"); |
| 299 | |
| 300 | abfd->sections = obj_textsec (abfd); |
| 301 | obj_textsec (abfd)->next = obj_datasec (abfd); |
| 302 | obj_datasec (abfd)->next = obj_bsssec (abfd); |
| 303 | |
| 304 | obj_datasec (abfd)->size = execp->a_data; |
| 305 | obj_bsssec (abfd)->size = execp->a_bss; |
| 306 | obj_textsec (abfd)->size = execp->a_text; |
| 307 | |
| 308 | if (abfd->flags & D_PAGED) { |
| 309 | obj_textsec (abfd)->size -= EXEC_BYTES_SIZE; |
| 310 | } |
| 311 | |
| 312 | |
| 313 | obj_textsec (abfd)->flags = (execp->a_trsize != 0 ? |
| 314 | (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_HAS_CONTENTS) : |
| 315 | (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS)); |
| 316 | obj_datasec (abfd)->flags = (execp->a_drsize != 0 ? |
| 317 | (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_HAS_CONTENTS) : |
| 318 | (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS)); |
| 319 | obj_bsssec (abfd)->flags = SEC_ALLOC; |
| 320 | |
| 321 | #ifdef THIS_IS_ONLY_DOCUMENTATION |
| 322 | /* Call back to the format-dependent code to fill in the rest of the |
| 323 | fields and do any further cleanup. Things that should be filled |
| 324 | in by the callback: */ |
| 325 | |
| 326 | struct exec *execp = exec_hdr (abfd); |
| 327 | |
| 328 | /* The virtual memory addresses of the sections */ |
| 329 | obj_datasec (abfd)->vma = N_DATADDR(*execp); |
| 330 | obj_bsssec (abfd)->vma = N_BSSADDR(*execp); |
| 331 | obj_textsec (abfd)->vma = N_TXTADDR(*execp); |
| 332 | |
| 333 | /* The file offsets of the sections */ |
| 334 | obj_textsec (abfd)->filepos = N_TXTOFF(*execp); |
| 335 | obj_datasec (abfd)->filepos = N_DATOFF(*execp); |
| 336 | |
| 337 | /* The file offsets of the relocation info */ |
| 338 | obj_textsec (abfd)->rel_filepos = N_TRELOFF(*execp); |
| 339 | obj_datasec (abfd)->rel_filepos = N_DRELOFF(*execp); |
| 340 | |
| 341 | /* The file offsets of the string table and symbol table. */ |
| 342 | obj_str_filepos (abfd) = N_STROFF (*execp); |
| 343 | obj_sym_filepos (abfd) = N_SYMOFF (*execp); |
| 344 | |
| 345 | /* This common code can't fill in those things because they depend |
| 346 | on either the start address of the text segment, the rounding |
| 347 | up of virtual addersses between segments, or the starting file |
| 348 | position of the text segment -- all of which varies among different |
| 349 | versions of a.out. */ |
| 350 | |
| 351 | /* Determine the architecture and machine type of the object file. */ |
| 352 | switch (N_MACHTYPE (*exec_hdr (abfd))) { |
| 353 | default: |
| 354 | abfd->obj_arch = bfd_arch_obscure; |
| 355 | break; |
| 356 | } |
| 357 | |
| 358 | /* Determine the size of a relocation entry */ |
| 359 | switch (abfd->obj_arch) { |
| 360 | case bfd_arch_sparc: |
| 361 | case bfd_arch_a29k: |
| 362 | obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE; |
| 363 | default: |
| 364 | obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; |
| 365 | } |
| 366 | |
| 367 | return abfd->xvec; |
| 368 | |
| 369 | /* The architecture is encoded in various ways in various a.out variants, |
| 370 | or is not encoded at all in some of them. The relocation size depends |
| 371 | on the architecture and the a.out variant. Finally, the return value |
| 372 | is the bfd_target vector in use. If an error occurs, return zero and |
| 373 | set bfd_error to the appropriate error code. |
| 374 | |
| 375 | Formats such as b.out, which have additional fields in the a.out |
| 376 | header, should cope with them in this callback as well. */ |
| 377 | #endif /* DOCUMENTATION */ |
| 378 | |
| 379 | |
| 380 | return (*callback_to_real_object_p)(abfd); |
| 381 | } |
| 382 | |
| 383 | /*doc* |
| 384 | *i aout_<size>_mkobject |
| 385 | |
| 386 | This routine initializes a bfd for use with a.out files. |
| 387 | |
| 388 | *; PROTO(boolean, aout_<size>_mkobject, (bfd *)); |
| 389 | */ |
| 390 | |
| 391 | boolean |
| 392 | DEFUN(NAME(aout,mkobject),(abfd), |
| 393 | bfd *abfd) |
| 394 | { |
| 395 | struct container *rawptr; |
| 396 | |
| 397 | bfd_error = system_call_error; |
| 398 | |
| 399 | /* Use an intermediate variable for clarity */ |
| 400 | rawptr = (struct container *)bfd_zalloc (abfd, sizeof (struct container)); |
| 401 | |
| 402 | if (rawptr == NULL) { |
| 403 | bfd_error = no_memory; |
| 404 | return false; |
| 405 | } |
| 406 | |
| 407 | set_tdata (abfd, rawptr); |
| 408 | exec_hdr (abfd) = &(rawptr->e); |
| 409 | |
| 410 | /* For simplicity's sake we just make all the sections right here. */ |
| 411 | |
| 412 | obj_textsec (abfd) = (asection *)NULL; |
| 413 | obj_datasec (abfd) = (asection *)NULL; |
| 414 | obj_bsssec (abfd) = (asection *)NULL; |
| 415 | bfd_make_section (abfd, ".text"); |
| 416 | bfd_make_section (abfd, ".data"); |
| 417 | bfd_make_section (abfd, ".bss"); |
| 418 | |
| 419 | return true; |
| 420 | } |
| 421 | |
| 422 | |
| 423 | /*doc* |
| 424 | *i aout_<size>_machine_type |
| 425 | |
| 426 | Keep track of machine architecture and machine type for a.out's. |
| 427 | Return the machine_type for a particular arch&machine, or M_UNKNOWN |
| 428 | if that exact arch&machine can't be represented in a.out format. |
| 429 | |
| 430 | If the architecture is understood, machine type 0 (default) should |
| 431 | always be understood. |
| 432 | |
| 433 | *; PROTO(enum machine_type, aout_<size>_machine_type, |
| 434 | (enum bfd_architecture arch, |
| 435 | unsigned long machine)); |
| 436 | */ |
| 437 | |
| 438 | enum machine_type |
| 439 | DEFUN(NAME(aout,machine_type),(arch, machine), |
| 440 | enum bfd_architecture arch AND |
| 441 | unsigned long machine) |
| 442 | { |
| 443 | enum machine_type arch_flags; |
| 444 | |
| 445 | arch_flags = M_UNKNOWN; |
| 446 | |
| 447 | switch (arch) { |
| 448 | case bfd_arch_sparc: |
| 449 | if (machine == 0) arch_flags = M_SPARC; |
| 450 | break; |
| 451 | |
| 452 | case bfd_arch_m68k: |
| 453 | switch (machine) { |
| 454 | case 0: arch_flags = M_68010; break; |
| 455 | case 68000: arch_flags = M_UNKNOWN; break; |
| 456 | case 68010: arch_flags = M_68010; break; |
| 457 | case 68020: arch_flags = M_68020; break; |
| 458 | default: arch_flags = M_UNKNOWN; break; |
| 459 | } |
| 460 | break; |
| 461 | |
| 462 | case bfd_arch_i386: |
| 463 | if (machine == 0) arch_flags = M_386; |
| 464 | break; |
| 465 | |
| 466 | case bfd_arch_a29k: |
| 467 | if (machine == 0) arch_flags = M_29K; |
| 468 | break; |
| 469 | |
| 470 | default: |
| 471 | arch_flags = M_UNKNOWN; |
| 472 | break; |
| 473 | } |
| 474 | return arch_flags; |
| 475 | } |
| 476 | |
| 477 | /*doc* |
| 478 | *i aout_<size>_set_arch_mach |
| 479 | |
| 480 | Sets the architecture and the machine of the bfd to those values |
| 481 | supplied. Verifies that the format can support the architecture |
| 482 | required. |
| 483 | |
| 484 | *; PROTO(boolean, aout_<size>_set_arch_mach, |
| 485 | (bfd *, |
| 486 | enum bfd_architecture, |
| 487 | unsigned long machine)); |
| 488 | */ |
| 489 | |
| 490 | boolean |
| 491 | DEFUN(NAME(aout,set_arch_mach),(abfd, arch, machine), |
| 492 | bfd *abfd AND |
| 493 | enum bfd_architecture arch AND |
| 494 | unsigned long machine) |
| 495 | { |
| 496 | abfd->obj_arch = arch; |
| 497 | abfd->obj_machine = machine; |
| 498 | if (arch != bfd_arch_unknown && |
| 499 | NAME(aout,machine_type) (arch, machine) == M_UNKNOWN) |
| 500 | return false; /* We can't represent this type */ |
| 501 | return true; /* We're easy ... */ |
| 502 | } |
| 503 | |
| 504 | /*doc* |
| 505 | *i aout_<size>new_section_hook |
| 506 | |
| 507 | Called by the bfd in response to a @code{bfd_make_section} request. |
| 508 | *; PROTO(boolean, aout_<size>_new_section_hook, |
| 509 | (bfd *abfd, |
| 510 | asection *newsect)); |
| 511 | */ |
| 512 | boolean |
| 513 | DEFUN(NAME(aout,new_section_hook),(abfd, newsect), |
| 514 | bfd *abfd AND |
| 515 | asection *newsect) |
| 516 | { |
| 517 | /* align to double at least */ |
| 518 | newsect->alignment_power = 3; |
| 519 | |
| 520 | if (bfd_get_format (abfd) == bfd_object) { |
| 521 | if (obj_textsec(abfd) == NULL && !strcmp(newsect->name, ".text")) { |
| 522 | obj_textsec(abfd)= newsect; |
| 523 | return true; |
| 524 | } |
| 525 | |
| 526 | if (obj_datasec(abfd) == NULL && !strcmp(newsect->name, ".data")) { |
| 527 | obj_datasec(abfd) = newsect; |
| 528 | return true; |
| 529 | } |
| 530 | |
| 531 | if (obj_bsssec(abfd) == NULL && !strcmp(newsect->name, ".bss")) { |
| 532 | obj_bsssec(abfd) = newsect; |
| 533 | return true; |
| 534 | } |
| 535 | } |
| 536 | |
| 537 | /* We allow more than three sections internally */ |
| 538 | return true; |
| 539 | } |
| 540 | |
| 541 | boolean |
| 542 | DEFUN(NAME(aout,set_section_contents),(abfd, section, location, offset, count), |
| 543 | bfd *abfd AND |
| 544 | sec_ptr section AND |
| 545 | PTR location AND |
| 546 | file_ptr offset AND |
| 547 | bfd_size_type count) |
| 548 | { |
| 549 | if (abfd->output_has_begun == false) |
| 550 | { /* set by bfd.c handler */ |
| 551 | if ((obj_textsec (abfd) == NULL) || (obj_datasec (abfd) == NULL)) |
| 552 | { |
| 553 | bfd_error = invalid_operation; |
| 554 | return false; |
| 555 | } |
| 556 | /* if (abfd->flags & D_PAGED) { |
| 557 | obj_textsec(abfd)->filepos = 0; |
| 558 | } |
| 559 | else*/ { |
| 560 | obj_textsec(abfd)->filepos = EXEC_BYTES_SIZE; |
| 561 | } |
| 562 | obj_textsec(abfd)->size = align_power(obj_textsec(abfd)->size, |
| 563 | obj_textsec(abfd)->alignment_power); |
| 564 | obj_datasec(abfd)->filepos = obj_textsec (abfd)->size + EXEC_BYTES_SIZE; |
| 565 | obj_datasec(abfd)->size = align_power(obj_datasec(abfd)->size, |
| 566 | obj_datasec(abfd)->alignment_power); |
| 567 | |
| 568 | |
| 569 | } |
| 570 | /* regardless, once we know what we're doing, we might as well get going */ |
| 571 | if (section != obj_bsssec(abfd)) |
| 572 | { |
| 573 | bfd_seek (abfd, section->filepos + offset, SEEK_SET); |
| 574 | |
| 575 | if (count) { |
| 576 | return (bfd_write ((PTR)location, 1, count, abfd) == count) ? |
| 577 | true : false; |
| 578 | } |
| 579 | return false; |
| 580 | } |
| 581 | return true; |
| 582 | } |
| 583 | \f |
| 584 | /* Classify stabs symbols */ |
| 585 | |
| 586 | #define sym_in_text_section(sym) \ |
| 587 | (((sym)->type & (N_ABS | N_TEXT | N_DATA | N_BSS))== N_TEXT) |
| 588 | |
| 589 | #define sym_in_data_section(sym) \ |
| 590 | (((sym)->type & (N_ABS | N_TEXT | N_DATA | N_BSS))== N_DATA) |
| 591 | |
| 592 | #define sym_in_bss_section(sym) \ |
| 593 | (((sym)->type & (N_ABS | N_TEXT | N_DATA | N_BSS))== N_BSS) |
| 594 | |
| 595 | /* Symbol is undefined if type is N_UNDF|N_EXT and if it has |
| 596 | zero in the "value" field. Nonzeroes there are fortrancommon |
| 597 | symbols. */ |
| 598 | #define sym_is_undefined(sym) \ |
| 599 | ((sym)->type == (N_UNDF | N_EXT) && (sym)->symbol.value == 0) |
| 600 | |
| 601 | /* Symbol is a global definition if N_EXT is on and if it has |
| 602 | a nonzero type field. */ |
| 603 | #define sym_is_global_defn(sym) \ |
| 604 | (((sym)->type & N_EXT) && (sym)->type & N_TYPE) |
| 605 | |
| 606 | /* Symbol is debugger info if any bits outside N_TYPE or N_EXT |
| 607 | are on. */ |
| 608 | #define sym_is_debugger_info(sym) \ |
| 609 | ((sym)->type & ~(N_EXT | N_TYPE)) |
| 610 | |
| 611 | #define sym_is_fortrancommon(sym) \ |
| 612 | (((sym)->type == (N_EXT)) && (sym)->symbol.value != 0) |
| 613 | |
| 614 | /* Symbol is absolute if it has N_ABS set */ |
| 615 | #define sym_is_absolute(sym) \ |
| 616 | (((sym)->type & N_TYPE)== N_ABS) |
| 617 | |
| 618 | |
| 619 | #define sym_is_indirect(sym) \ |
| 620 | (((sym)->type & N_ABS)== N_ABS) |
| 621 | |
| 622 | /* Only in their own functions for ease of debugging; when sym flags have |
| 623 | stabilised these should be inlined into their (single) caller */ |
| 624 | |
| 625 | static void |
| 626 | DEFUN(translate_from_native_sym_flags,(sym_pointer, cache_ptr, abfd), |
| 627 | struct external_nlist *sym_pointer AND |
| 628 | aout_symbol_type *cache_ptr AND |
| 629 | bfd *abfd) |
| 630 | { |
| 631 | switch (cache_ptr->type & N_TYPE) { |
| 632 | case N_SETA: |
| 633 | case N_SETT: |
| 634 | case N_SETD: |
| 635 | case N_SETB: |
| 636 | { |
| 637 | asection *section = bfd_make_section(abfd, |
| 638 | cache_ptr->symbol.name); |
| 639 | arelent_chain *reloc = (arelent_chain *)bfd_alloc(abfd, sizeof(arelent_chain)); |
| 640 | |
| 641 | switch ( (cache_ptr->type & N_TYPE) ) { |
| 642 | case N_SETA: |
| 643 | reloc->relent.section = (asection *)NULL; |
| 644 | cache_ptr->symbol.section = (asection *)NULL; |
| 645 | break; |
| 646 | case N_SETT: |
| 647 | reloc->relent.section = (asection *)obj_textsec(abfd); |
| 648 | cache_ptr->symbol.value -= reloc->relent.section->vma; |
| 649 | break; |
| 650 | case N_SETD: |
| 651 | reloc->relent.section = (asection *)obj_datasec(abfd); |
| 652 | cache_ptr->symbol.value -= reloc->relent.section->vma; |
| 653 | break; |
| 654 | case N_SETB: |
| 655 | reloc->relent.section = (asection *)obj_bsssec(abfd); |
| 656 | cache_ptr->symbol.value -= reloc->relent.section->vma; |
| 657 | break; |
| 658 | } |
| 659 | cache_ptr->symbol.section = reloc->relent.section; |
| 660 | reloc->relent.addend = cache_ptr->symbol.value ; |
| 661 | |
| 662 | /* We modify the symbol to belong to a section depending upon the |
| 663 | name of the symbol - probably __CTOR__ or __DTOR__ but we don't |
| 664 | really care, and add to the size of the section to contain a |
| 665 | pointer to the symbol. Build a reloc entry to relocate to this |
| 666 | symbol attached to this section. */ |
| 667 | |
| 668 | section->flags = SEC_CONSTRUCTOR; |
| 669 | section->reloc_count++; |
| 670 | section->alignment_power = 2; |
| 671 | reloc->relent.sym_ptr_ptr = (asymbol **)NULL; |
| 672 | reloc->next = section->constructor_chain; |
| 673 | section->constructor_chain = reloc; |
| 674 | reloc->relent.address = section->size; |
| 675 | section->size += sizeof(int *); |
| 676 | |
| 677 | reloc->relent.howto = howto_table_ext +CTOR_TABLE_RELOC_IDX; |
| 678 | cache_ptr->symbol.flags |= BSF_DEBUGGING ; |
| 679 | } |
| 680 | break; |
| 681 | default: |
| 682 | |
| 683 | if (sym_is_debugger_info (cache_ptr)) { |
| 684 | cache_ptr->symbol.flags = BSF_DEBUGGING ; |
| 685 | /* Work out the section correct for this symbol */ |
| 686 | switch (cache_ptr->type & N_TYPE) |
| 687 | { |
| 688 | case N_TEXT: |
| 689 | case N_FN: |
| 690 | cache_ptr->symbol.section = obj_textsec (abfd); |
| 691 | cache_ptr->symbol.value -= obj_textsec(abfd)->vma; |
| 692 | break; |
| 693 | case N_DATA: |
| 694 | cache_ptr->symbol.value -= obj_datasec(abfd)->vma; |
| 695 | cache_ptr->symbol.section = obj_datasec (abfd); |
| 696 | break; |
| 697 | case N_BSS : |
| 698 | cache_ptr->symbol.section = obj_bsssec (abfd); |
| 699 | cache_ptr->symbol.value -= obj_bsssec(abfd)->vma; |
| 700 | break; |
| 701 | case N_ABS: |
| 702 | default: |
| 703 | cache_ptr->symbol.section = 0; |
| 704 | break; |
| 705 | } |
| 706 | } |
| 707 | else { |
| 708 | if (sym_is_fortrancommon (cache_ptr)) |
| 709 | { |
| 710 | cache_ptr->symbol.flags = BSF_FORT_COMM; |
| 711 | cache_ptr->symbol.section = (asection *)NULL; |
| 712 | } |
| 713 | else { |
| 714 | if (sym_is_undefined (cache_ptr)) { |
| 715 | cache_ptr->symbol.flags = BSF_UNDEFINED; |
| 716 | } |
| 717 | else if (sym_is_global_defn (cache_ptr)) { |
| 718 | cache_ptr->symbol.flags = BSF_GLOBAL | BSF_EXPORT; |
| 719 | } |
| 720 | |
| 721 | else if (sym_is_absolute (cache_ptr)) { |
| 722 | cache_ptr->symbol.flags = BSF_ABSOLUTE; |
| 723 | } |
| 724 | else { |
| 725 | cache_ptr->symbol.flags = BSF_LOCAL; |
| 726 | } |
| 727 | |
| 728 | /* In a.out, the value of a symbol is always relative to the |
| 729 | * start of the file, if this is a data symbol we'll subtract |
| 730 | * the size of the text section to get the section relative |
| 731 | * value. If this is a bss symbol (which would be strange) |
| 732 | * we'll subtract the size of the previous two sections |
| 733 | * to find the section relative address. |
| 734 | */ |
| 735 | |
| 736 | if (sym_in_text_section (cache_ptr)) { |
| 737 | cache_ptr->symbol.value -= obj_textsec(abfd)->vma; |
| 738 | cache_ptr->symbol.section = obj_textsec (abfd); |
| 739 | } |
| 740 | else if (sym_in_data_section (cache_ptr)){ |
| 741 | cache_ptr->symbol.value -= obj_datasec(abfd)->vma; |
| 742 | cache_ptr->symbol.section = obj_datasec (abfd); |
| 743 | } |
| 744 | else if (sym_in_bss_section(cache_ptr)) { |
| 745 | cache_ptr->symbol.section = obj_bsssec (abfd); |
| 746 | cache_ptr->symbol.value -= obj_bsssec(abfd)->vma; |
| 747 | } |
| 748 | else { |
| 749 | cache_ptr->symbol.section = (asection *)NULL; |
| 750 | cache_ptr->symbol.flags |= BSF_ABSOLUTE; |
| 751 | } |
| 752 | } |
| 753 | } |
| 754 | } |
| 755 | } |
| 756 | |
| 757 | static void |
| 758 | DEFUN(translate_to_native_sym_flags,(sym_pointer, cache_ptr, abfd), |
| 759 | struct external_nlist *sym_pointer AND |
| 760 | asymbol *cache_ptr AND |
| 761 | bfd *abfd) |
| 762 | { |
| 763 | bfd_vma value = cache_ptr->value; |
| 764 | |
| 765 | if (bfd_get_section(cache_ptr)) { |
| 766 | if (bfd_get_output_section(cache_ptr) == obj_bsssec (abfd)) { |
| 767 | sym_pointer->e_type[0] |= N_BSS; |
| 768 | } |
| 769 | else if (bfd_get_output_section(cache_ptr) == obj_datasec (abfd)) { |
| 770 | sym_pointer->e_type[0] |= N_DATA; |
| 771 | } |
| 772 | else if (bfd_get_output_section(cache_ptr) == obj_textsec (abfd)) { |
| 773 | sym_pointer->e_type[0] |= N_TEXT; |
| 774 | } |
| 775 | else { |
| 776 | bfd_error_vector.nonrepresentable_section(abfd, |
| 777 | bfd_get_output_section(cache_ptr)->name); |
| 778 | } |
| 779 | /* Turn the symbol from section relative to absolute again */ |
| 780 | |
| 781 | value += |
| 782 | cache_ptr->section->output_section->vma |
| 783 | + cache_ptr->section->output_offset ; |
| 784 | } |
| 785 | else { |
| 786 | sym_pointer->e_type[0] |= N_ABS; |
| 787 | } |
| 788 | |
| 789 | if (cache_ptr->flags & (BSF_FORT_COMM | BSF_UNDEFINED)) { |
| 790 | sym_pointer->e_type[0] = (N_UNDF | N_EXT); |
| 791 | } |
| 792 | else { |
| 793 | if (cache_ptr->flags & BSF_ABSOLUTE) { |
| 794 | sym_pointer->e_type[0] |= N_ABS; |
| 795 | } |
| 796 | |
| 797 | if (cache_ptr->flags & (BSF_GLOBAL | BSF_EXPORT)) { |
| 798 | sym_pointer->e_type[0] |= N_EXT; |
| 799 | } |
| 800 | if (cache_ptr->flags & BSF_DEBUGGING) { |
| 801 | sym_pointer->e_type [0]= ((aout_symbol_type *)cache_ptr)->type; |
| 802 | } |
| 803 | } |
| 804 | PUT_WORD(abfd, value, sym_pointer->e_value); |
| 805 | } |
| 806 | \f |
| 807 | /* Native-level interface to symbols. */ |
| 808 | |
| 809 | /* We read the symbols into a buffer, which is discarded when this |
| 810 | function exits. We read the strings into a buffer large enough to |
| 811 | hold them all plus all the cached symbol entries. */ |
| 812 | |
| 813 | asymbol * |
| 814 | DEFUN(NAME(aout,make_empty_symbol),(abfd), |
| 815 | bfd *abfd) |
| 816 | { |
| 817 | aout_symbol_type *new = |
| 818 | (aout_symbol_type *)bfd_zalloc (abfd, sizeof (aout_symbol_type)); |
| 819 | new->symbol.the_bfd = abfd; |
| 820 | |
| 821 | return &new->symbol; |
| 822 | } |
| 823 | |
| 824 | boolean |
| 825 | DEFUN(NAME(aout,slurp_symbol_table),(abfd), |
| 826 | bfd *abfd) |
| 827 | { |
| 828 | bfd_size_type symbol_size; |
| 829 | bfd_size_type string_size; |
| 830 | unsigned char string_chars[BYTES_IN_WORD]; |
| 831 | struct external_nlist *syms; |
| 832 | char *strings; |
| 833 | aout_symbol_type *cached; |
| 834 | |
| 835 | /* If there's no work to be done, don't do any */ |
| 836 | if (obj_aout_symbols (abfd) != (aout_symbol_type *)NULL) return true; |
| 837 | symbol_size = exec_hdr(abfd)->a_syms; |
| 838 | if (symbol_size == 0) { |
| 839 | bfd_error = no_symbols; |
| 840 | return false; |
| 841 | } |
| 842 | |
| 843 | bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET); |
| 844 | if (bfd_read ((PTR)string_chars, BYTES_IN_WORD, 1, abfd) != BYTES_IN_WORD) |
| 845 | return false; |
| 846 | string_size = GET_WORD (abfd, string_chars); |
| 847 | |
| 848 | strings =(char *) bfd_alloc(abfd, string_size + 1); |
| 849 | cached = (aout_symbol_type *) |
| 850 | bfd_zalloc(abfd, (bfd_size_type)(bfd_get_symcount (abfd) * sizeof(aout_symbol_type))); |
| 851 | /* Alloc this last, so we can free it if obstack is in use. */ |
| 852 | syms = (struct external_nlist *) bfd_alloc(abfd, symbol_size); |
| 853 | |
| 854 | bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET); |
| 855 | if (bfd_read ((PTR)syms, 1, symbol_size, abfd) != symbol_size) { |
| 856 | bailout: |
| 857 | if (syms) bfd_release (abfd, syms); |
| 858 | if (cached) bfd_release (abfd, cached); |
| 859 | if (strings)bfd_release (abfd, strings); |
| 860 | return false; |
| 861 | } |
| 862 | |
| 863 | bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET); |
| 864 | if (bfd_read ((PTR)strings, 1, string_size, abfd) != string_size) { |
| 865 | goto bailout; |
| 866 | } |
| 867 | |
| 868 | /* OK, now walk the new symtable, cacheing symbol properties */ |
| 869 | { |
| 870 | register struct external_nlist *sym_pointer; |
| 871 | register struct external_nlist *sym_end = syms + bfd_get_symcount (abfd); |
| 872 | register aout_symbol_type *cache_ptr = cached; |
| 873 | |
| 874 | /* Run through table and copy values */ |
| 875 | for (sym_pointer = syms, cache_ptr = cached; |
| 876 | sym_pointer < sym_end; sym_pointer++, cache_ptr++) |
| 877 | { |
| 878 | bfd_vma x = GET_WORD(abfd, sym_pointer->e_strx); |
| 879 | cache_ptr->symbol.the_bfd = abfd; |
| 880 | if (x) |
| 881 | cache_ptr->symbol.name = x + strings; |
| 882 | else |
| 883 | cache_ptr->symbol.name = (char *)NULL; |
| 884 | |
| 885 | cache_ptr->symbol.value = GET_SWORD(abfd, sym_pointer->e_value); |
| 886 | cache_ptr->desc = bfd_get_16(abfd, sym_pointer->e_desc); |
| 887 | cache_ptr->other =bfd_get_8(abfd, sym_pointer->e_other); |
| 888 | cache_ptr->type = bfd_get_8(abfd, sym_pointer->e_type); |
| 889 | cache_ptr->symbol.udata = 0; |
| 890 | translate_from_native_sym_flags (sym_pointer, cache_ptr, abfd); |
| 891 | } |
| 892 | } |
| 893 | |
| 894 | obj_aout_symbols (abfd) = cached; |
| 895 | bfd_release (abfd, (PTR)syms); |
| 896 | |
| 897 | return true; |
| 898 | } |
| 899 | |
| 900 | |
| 901 | void |
| 902 | DEFUN(NAME(aout,write_syms),(abfd), |
| 903 | bfd *abfd) |
| 904 | { |
| 905 | unsigned int count ; |
| 906 | asymbol **generic = bfd_get_outsymbols (abfd); |
| 907 | |
| 908 | bfd_size_type stindex = BYTES_IN_WORD; /* initial string length */ |
| 909 | |
| 910 | for (count = 0; count < bfd_get_symcount (abfd); count++) { |
| 911 | asymbol *g = generic[count]; |
| 912 | struct external_nlist nsp; |
| 913 | |
| 914 | |
| 915 | if (g->name) { |
| 916 | unsigned int length = strlen(g->name) +1; |
| 917 | PUT_WORD (abfd, stindex, (unsigned char *)nsp.e_strx); |
| 918 | stindex += length; |
| 919 | } |
| 920 | else { |
| 921 | PUT_WORD (abfd, 0, (unsigned char *)nsp.e_strx); |
| 922 | } |
| 923 | |
| 924 | if (g->the_bfd->xvec->flavour == abfd->xvec->flavour) |
| 925 | { |
| 926 | bfd_h_put_16(abfd, aout_symbol(g)->desc, nsp.e_desc); |
| 927 | bfd_h_put_8(abfd, aout_symbol(g)->other, nsp.e_other); |
| 928 | bfd_h_put_8(abfd, aout_symbol(g)->type, nsp.e_type); |
| 929 | } |
| 930 | else |
| 931 | { |
| 932 | bfd_h_put_16(abfd,0, nsp.e_desc); |
| 933 | bfd_h_put_8(abfd, 0, nsp.e_other); |
| 934 | bfd_h_put_8(abfd, 0, nsp.e_type); |
| 935 | } |
| 936 | |
| 937 | |
| 938 | |
| 939 | translate_to_native_sym_flags (&nsp, (PTR)g, abfd); |
| 940 | |
| 941 | bfd_write((PTR)&nsp,1,EXTERNAL_LIST_SIZE, abfd); |
| 942 | } |
| 943 | |
| 944 | |
| 945 | /* Now output the strings. Be sure to put string length into correct |
| 946 | * byte ordering before writing it. |
| 947 | */ |
| 948 | { |
| 949 | char buffer[BYTES_IN_WORD]; |
| 950 | PUT_WORD (abfd, stindex, (unsigned char *)buffer); |
| 951 | |
| 952 | bfd_write((PTR)buffer, 1, BYTES_IN_WORD, abfd); |
| 953 | } |
| 954 | generic = bfd_get_outsymbols(abfd); |
| 955 | for (count = 0; count < bfd_get_symcount(abfd); count++) |
| 956 | { |
| 957 | asymbol *g = *(generic++); |
| 958 | |
| 959 | if (g->name) |
| 960 | { |
| 961 | size_t length = strlen(g->name)+1; |
| 962 | bfd_write((PTR)g->name, 1, length, abfd); |
| 963 | } |
| 964 | if ((g->flags & BSF_FAKE)==0) { |
| 965 | g->name = itos(count); /* smash the generic symbol */ |
| 966 | } |
| 967 | } |
| 968 | } |
| 969 | |
| 970 | |
| 971 | |
| 972 | unsigned int |
| 973 | DEFUN(NAME(aout,get_symtab),(abfd, location), |
| 974 | bfd *abfd AND |
| 975 | asymbol **location) |
| 976 | { |
| 977 | unsigned int counter = 0; |
| 978 | aout_symbol_type *symbase; |
| 979 | |
| 980 | if (!NAME(aout,slurp_symbol_table)(abfd)) return 0; |
| 981 | |
| 982 | for (symbase = obj_aout_symbols(abfd); counter++ < bfd_get_symcount (abfd);) |
| 983 | *(location++) = (asymbol *)( symbase++); |
| 984 | *location++ =0; |
| 985 | return bfd_get_symcount(abfd); |
| 986 | } |
| 987 | |
| 988 | \f |
| 989 | /* Standard reloc stuff */ |
| 990 | /* Output standard relocation information to a file in target byte order. */ |
| 991 | |
| 992 | void |
| 993 | DEFUN(NAME(aout,swap_std_reloc_out),(abfd, g, natptr), |
| 994 | bfd *abfd AND |
| 995 | arelent *g AND |
| 996 | struct reloc_std_external *natptr) |
| 997 | { |
| 998 | int r_index; |
| 999 | int r_extern; |
| 1000 | unsigned int r_length; |
| 1001 | int r_pcrel; |
| 1002 | int r_baserel, r_jmptable, r_relative; |
| 1003 | unsigned int r_addend; |
| 1004 | |
| 1005 | PUT_WORD(abfd, g->address, natptr->r_address); |
| 1006 | |
| 1007 | r_length = g->howto->size ; /* Size as a power of two */ |
| 1008 | r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */ |
| 1009 | /* r_baserel, r_jmptable, r_relative??? FIXME-soon */ |
| 1010 | r_baserel = 0; |
| 1011 | r_jmptable = 0; |
| 1012 | r_relative = 0; |
| 1013 | |
| 1014 | r_addend = g->addend; /* Start here, see how it goes */ |
| 1015 | |
| 1016 | /* name was clobbered by aout_write_syms to be symbol index */ |
| 1017 | |
| 1018 | if (g->sym_ptr_ptr != NULL) |
| 1019 | { |
| 1020 | if ((*(g->sym_ptr_ptr))->section) { |
| 1021 | /* put the section offset into the addend for output */ |
| 1022 | r_addend += (*(g->sym_ptr_ptr))->section->vma; |
| 1023 | } |
| 1024 | |
| 1025 | r_index = stoi((*(g->sym_ptr_ptr))->name); |
| 1026 | r_extern = 1; |
| 1027 | } |
| 1028 | else { |
| 1029 | r_extern = 0; |
| 1030 | if (g->section == NULL) { |
| 1031 | /* It is possible to have a reloc with nothing, we generate an |
| 1032 | abs + 0 */ |
| 1033 | r_addend = 0; |
| 1034 | r_index = N_ABS | N_EXT; |
| 1035 | } |
| 1036 | else if(g->section->output_section == obj_textsec(abfd)) { |
| 1037 | r_index = N_TEXT | N_EXT; |
| 1038 | r_addend += g->section->output_section->vma; |
| 1039 | } |
| 1040 | else if (g->section->output_section == obj_datasec(abfd)) { |
| 1041 | r_index = N_DATA | N_EXT; |
| 1042 | r_addend += g->section->output_section->vma; |
| 1043 | } |
| 1044 | else if (g->section->output_section == obj_bsssec(abfd)) { |
| 1045 | r_index = N_BSS | N_EXT ; |
| 1046 | r_addend += g->section->output_section->vma; |
| 1047 | } |
| 1048 | else { |
| 1049 | BFD_ASSERT(0); |
| 1050 | } |
| 1051 | } |
| 1052 | |
| 1053 | /* now the fun stuff */ |
| 1054 | if (abfd->xvec->header_byteorder_big_p != false) { |
| 1055 | natptr->r_index[0] = r_index >> 16; |
| 1056 | natptr->r_index[1] = r_index >> 8; |
| 1057 | natptr->r_index[2] = r_index; |
| 1058 | natptr->r_type[0] = |
| 1059 | (r_extern? RELOC_STD_BITS_EXTERN_BIG: 0) |
| 1060 | | (r_pcrel? RELOC_STD_BITS_PCREL_BIG: 0) |
| 1061 | | (r_baserel? RELOC_STD_BITS_BASEREL_BIG: 0) |
| 1062 | | (r_jmptable? RELOC_STD_BITS_JMPTABLE_BIG: 0) |
| 1063 | | (r_relative? RELOC_STD_BITS_RELATIVE_BIG: 0) |
| 1064 | | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG); |
| 1065 | } else { |
| 1066 | natptr->r_index[2] = r_index >> 16; |
| 1067 | natptr->r_index[1] = r_index >> 8; |
| 1068 | natptr->r_index[0] = r_index; |
| 1069 | natptr->r_type[0] = |
| 1070 | (r_extern? RELOC_STD_BITS_EXTERN_LITTLE: 0) |
| 1071 | | (r_pcrel? RELOC_STD_BITS_PCREL_LITTLE: 0) |
| 1072 | | (r_baserel? RELOC_STD_BITS_BASEREL_LITTLE: 0) |
| 1073 | | (r_jmptable? RELOC_STD_BITS_JMPTABLE_LITTLE: 0) |
| 1074 | | (r_relative? RELOC_STD_BITS_RELATIVE_LITTLE: 0) |
| 1075 | | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE); |
| 1076 | } |
| 1077 | } |
| 1078 | |
| 1079 | |
| 1080 | /* Extended stuff */ |
| 1081 | /* Output extended relocation information to a file in target byte order. */ |
| 1082 | |
| 1083 | void |
| 1084 | DEFUN(NAME(aout,swap_ext_reloc_out),(abfd, g, natptr), |
| 1085 | bfd *abfd AND |
| 1086 | arelent *g AND |
| 1087 | register struct reloc_ext_external *natptr) |
| 1088 | { |
| 1089 | int r_index; |
| 1090 | int r_extern; |
| 1091 | unsigned int r_type; |
| 1092 | unsigned int r_addend; |
| 1093 | |
| 1094 | PUT_WORD (abfd, g->address, natptr->r_address); |
| 1095 | |
| 1096 | /* Find a type in the output format which matches the input howto - |
| 1097 | at the moment we assume input format == output format FIXME!! */ |
| 1098 | r_type = (enum reloc_type) g->howto->type; |
| 1099 | |
| 1100 | r_addend = g->addend; /* Start here, see how it goes */ |
| 1101 | |
| 1102 | /* name was clobbered by aout_write_syms to be symbol index*/ |
| 1103 | |
| 1104 | if (g->sym_ptr_ptr != NULL) |
| 1105 | { |
| 1106 | if ((*(g->sym_ptr_ptr))->section) { |
| 1107 | /* put the section offset into the addend for output */ |
| 1108 | r_addend += (*(g->sym_ptr_ptr))->section->vma; |
| 1109 | } |
| 1110 | |
| 1111 | r_index = stoi((*(g->sym_ptr_ptr))->name); |
| 1112 | r_extern = 1; |
| 1113 | } |
| 1114 | else { |
| 1115 | r_extern = 0; |
| 1116 | if (g->section == NULL) { |
| 1117 | BFD_ASSERT(0); |
| 1118 | r_index = N_ABS | N_EXT; |
| 1119 | } |
| 1120 | else if(g->section->output_section == obj_textsec(abfd)) { |
| 1121 | r_index = N_TEXT | N_EXT; |
| 1122 | r_addend += g->section->output_section->vma; |
| 1123 | } |
| 1124 | else if (g->section->output_section == obj_datasec(abfd)) { |
| 1125 | r_index = N_DATA | N_EXT; |
| 1126 | r_addend += g->section->output_section->vma; |
| 1127 | } |
| 1128 | else if (g->section->output_section == obj_bsssec(abfd)) { |
| 1129 | r_index = N_BSS | N_EXT ; |
| 1130 | r_addend += g->section->output_section->vma; |
| 1131 | } |
| 1132 | else { |
| 1133 | BFD_ASSERT(0); |
| 1134 | } |
| 1135 | } |
| 1136 | |
| 1137 | /* now the fun stuff */ |
| 1138 | if (abfd->xvec->header_byteorder_big_p != false) { |
| 1139 | natptr->r_index[0] = r_index >> 16; |
| 1140 | natptr->r_index[1] = r_index >> 8; |
| 1141 | natptr->r_index[2] = r_index; |
| 1142 | natptr->r_type[0] = |
| 1143 | (r_extern? RELOC_EXT_BITS_EXTERN_BIG: 0) |
| 1144 | | (r_type << RELOC_EXT_BITS_TYPE_SH_BIG); |
| 1145 | } else { |
| 1146 | natptr->r_index[2] = r_index >> 16; |
| 1147 | natptr->r_index[1] = r_index >> 8; |
| 1148 | natptr->r_index[0] = r_index; |
| 1149 | natptr->r_type[0] = |
| 1150 | (r_extern? RELOC_EXT_BITS_EXTERN_LITTLE: 0) |
| 1151 | | (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE); |
| 1152 | } |
| 1153 | |
| 1154 | PUT_WORD (abfd, r_addend, natptr->r_addend); |
| 1155 | } |
| 1156 | |
| 1157 | #define MOVE_ADDRESS(ad) \ |
| 1158 | if (r_extern) { \ |
| 1159 | cache_ptr->sym_ptr_ptr = symbols + r_index; \ |
| 1160 | cache_ptr->section = (asection *)NULL; \ |
| 1161 | cache_ptr->addend = ad; \ |
| 1162 | } else { \ |
| 1163 | cache_ptr->sym_ptr_ptr = (asymbol **)NULL; \ |
| 1164 | switch (r_index) { \ |
| 1165 | case N_TEXT: \ |
| 1166 | case N_TEXT | N_EXT: \ |
| 1167 | cache_ptr->section = obj_textsec(abfd); \ |
| 1168 | cache_ptr->addend = ad - su->textsec->vma; \ |
| 1169 | break; \ |
| 1170 | case N_DATA: \ |
| 1171 | case N_DATA | N_EXT: \ |
| 1172 | cache_ptr->section = obj_datasec(abfd); \ |
| 1173 | cache_ptr->addend = ad - su->datasec->vma; \ |
| 1174 | break; \ |
| 1175 | case N_BSS: \ |
| 1176 | case N_BSS | N_EXT: \ |
| 1177 | cache_ptr->section = obj_bsssec(abfd); \ |
| 1178 | cache_ptr->addend = ad - su->bsssec->vma; \ |
| 1179 | break; \ |
| 1180 | case N_ABS: \ |
| 1181 | case N_ABS | N_EXT: \ |
| 1182 | cache_ptr->section = NULL; /* No section */ \ |
| 1183 | cache_ptr->addend = ad; /* FIXME, is this right? */ \ |
| 1184 | BFD_ASSERT(1); \ |
| 1185 | break; \ |
| 1186 | default: \ |
| 1187 | cache_ptr->section = NULL; /* No section */ \ |
| 1188 | cache_ptr->addend = ad; /* FIXME, is this right? */ \ |
| 1189 | BFD_ASSERT(1); \ |
| 1190 | break; \ |
| 1191 | } \ |
| 1192 | } \ |
| 1193 | |
| 1194 | void |
| 1195 | DEFUN(NAME(aout,swap_ext_reloc_in), (abfd, bytes, cache_ptr, symbols), |
| 1196 | bfd *abfd AND |
| 1197 | struct reloc_ext_external *bytes AND |
| 1198 | arelent *cache_ptr AND |
| 1199 | asymbol **symbols) |
| 1200 | { |
| 1201 | int r_index; |
| 1202 | int r_extern; |
| 1203 | unsigned int r_type; |
| 1204 | struct aoutdata *su = (struct aoutdata *)(abfd->tdata); |
| 1205 | |
| 1206 | cache_ptr->address = (GET_SWORD (abfd, bytes->r_address)); |
| 1207 | |
| 1208 | /* now the fun stuff */ |
| 1209 | if (abfd->xvec->header_byteorder_big_p != false) { |
| 1210 | r_index = (bytes->r_index[0] << 16) |
| 1211 | | (bytes->r_index[1] << 8) |
| 1212 | | bytes->r_index[2]; |
| 1213 | r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG)); |
| 1214 | r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) |
| 1215 | >> RELOC_EXT_BITS_TYPE_SH_BIG; |
| 1216 | } else { |
| 1217 | r_index = (bytes->r_index[2] << 16) |
| 1218 | | (bytes->r_index[1] << 8) |
| 1219 | | bytes->r_index[0]; |
| 1220 | r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE)); |
| 1221 | r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) |
| 1222 | >> RELOC_EXT_BITS_TYPE_SH_LITTLE; |
| 1223 | } |
| 1224 | |
| 1225 | cache_ptr->howto = howto_table_ext + r_type; |
| 1226 | MOVE_ADDRESS(GET_SWORD(abfd,bytes->r_addend)); |
| 1227 | } |
| 1228 | |
| 1229 | void |
| 1230 | DEFUN(NAME(aout,swap_std_reloc_in), (abfd, bytes, cache_ptr, symbols), |
| 1231 | bfd *abfd AND |
| 1232 | struct reloc_std_external *bytes AND |
| 1233 | arelent *cache_ptr AND |
| 1234 | asymbol **symbols) |
| 1235 | { |
| 1236 | int r_index; |
| 1237 | int r_extern; |
| 1238 | unsigned int r_length; |
| 1239 | int r_pcrel; |
| 1240 | int r_baserel, r_jmptable, r_relative; |
| 1241 | struct aoutdata *su = (struct aoutdata *)(abfd->tdata); |
| 1242 | |
| 1243 | cache_ptr->address = (int32_type)(bfd_h_get_32 (abfd, bytes->r_address)); |
| 1244 | |
| 1245 | /* now the fun stuff */ |
| 1246 | if (abfd->xvec->header_byteorder_big_p != false) { |
| 1247 | r_index = (bytes->r_index[0] << 16) |
| 1248 | | (bytes->r_index[1] << 8) |
| 1249 | | bytes->r_index[2]; |
| 1250 | r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_BIG)); |
| 1251 | r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_BIG)); |
| 1252 | r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_BIG)); |
| 1253 | r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG)); |
| 1254 | r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG)); |
| 1255 | r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_BIG) |
| 1256 | >> RELOC_STD_BITS_LENGTH_SH_BIG; |
| 1257 | } else { |
| 1258 | r_index = (bytes->r_index[2] << 16) |
| 1259 | | (bytes->r_index[1] << 8) |
| 1260 | | bytes->r_index[0]; |
| 1261 | r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE)); |
| 1262 | r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); |
| 1263 | r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE)); |
| 1264 | r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE)); |
| 1265 | r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE)); |
| 1266 | r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE) |
| 1267 | >> RELOC_STD_BITS_LENGTH_SH_LITTLE; |
| 1268 | } |
| 1269 | |
| 1270 | cache_ptr->howto = howto_table_std + r_length + 4 * r_pcrel; |
| 1271 | /* FIXME-soon: Roll baserel, jmptable, relative bits into howto setting */ |
| 1272 | |
| 1273 | MOVE_ADDRESS(0); |
| 1274 | } |
| 1275 | |
| 1276 | /* Reloc hackery */ |
| 1277 | |
| 1278 | boolean |
| 1279 | DEFUN(NAME(aout,slurp_reloc_table),(abfd, asect, symbols), |
| 1280 | bfd *abfd AND |
| 1281 | sec_ptr asect AND |
| 1282 | asymbol **symbols) |
| 1283 | { |
| 1284 | unsigned int count; |
| 1285 | bfd_size_type reloc_size; |
| 1286 | PTR relocs; |
| 1287 | arelent *reloc_cache; |
| 1288 | size_t each_size; |
| 1289 | |
| 1290 | if (asect->relocation) return true; |
| 1291 | |
| 1292 | if (asect->flags & SEC_CONSTRUCTOR) return true; |
| 1293 | |
| 1294 | if (asect == obj_datasec (abfd)) { |
| 1295 | reloc_size = exec_hdr(abfd)->a_drsize; |
| 1296 | goto doit; |
| 1297 | } |
| 1298 | |
| 1299 | if (asect == obj_textsec (abfd)) { |
| 1300 | reloc_size = exec_hdr(abfd)->a_trsize; |
| 1301 | goto doit; |
| 1302 | } |
| 1303 | |
| 1304 | bfd_error = invalid_operation; |
| 1305 | return false; |
| 1306 | |
| 1307 | doit: |
| 1308 | bfd_seek (abfd, asect->rel_filepos, SEEK_SET); |
| 1309 | each_size = obj_reloc_entry_size (abfd); |
| 1310 | |
| 1311 | count = reloc_size / each_size; |
| 1312 | |
| 1313 | |
| 1314 | reloc_cache = (arelent *) bfd_zalloc (abfd, (size_t)(count * sizeof |
| 1315 | (arelent))); |
| 1316 | if (!reloc_cache) { |
| 1317 | nomem: |
| 1318 | bfd_error = no_memory; |
| 1319 | return false; |
| 1320 | } |
| 1321 | |
| 1322 | relocs = (PTR) bfd_alloc (abfd, reloc_size); |
| 1323 | if (!relocs) { |
| 1324 | bfd_release (abfd, reloc_cache); |
| 1325 | goto nomem; |
| 1326 | } |
| 1327 | |
| 1328 | if (bfd_read (relocs, 1, reloc_size, abfd) != reloc_size) { |
| 1329 | bfd_release (abfd, relocs); |
| 1330 | bfd_release (abfd, reloc_cache); |
| 1331 | bfd_error = system_call_error; |
| 1332 | return false; |
| 1333 | } |
| 1334 | |
| 1335 | if (each_size == RELOC_EXT_SIZE) { |
| 1336 | register struct reloc_ext_external *rptr = (struct reloc_ext_external *) relocs; |
| 1337 | unsigned int counter = 0; |
| 1338 | arelent *cache_ptr = reloc_cache; |
| 1339 | |
| 1340 | for (; counter < count; counter++, rptr++, cache_ptr++) { |
| 1341 | NAME(aout,swap_ext_reloc_in)(abfd, rptr, cache_ptr, symbols); |
| 1342 | } |
| 1343 | } else { |
| 1344 | register struct reloc_std_external *rptr = (struct reloc_std_external*) relocs; |
| 1345 | unsigned int counter = 0; |
| 1346 | arelent *cache_ptr = reloc_cache; |
| 1347 | |
| 1348 | for (; counter < count; counter++, rptr++, cache_ptr++) { |
| 1349 | NAME(aout,swap_std_reloc_in)(abfd, rptr, cache_ptr, symbols); |
| 1350 | } |
| 1351 | |
| 1352 | } |
| 1353 | |
| 1354 | bfd_release (abfd,relocs); |
| 1355 | asect->relocation = reloc_cache; |
| 1356 | asect->reloc_count = count; |
| 1357 | return true; |
| 1358 | } |
| 1359 | |
| 1360 | |
| 1361 | |
| 1362 | /* Write out a relocation section into an object file. */ |
| 1363 | |
| 1364 | boolean |
| 1365 | DEFUN(NAME(aout,squirt_out_relocs),(abfd, section), |
| 1366 | bfd *abfd AND |
| 1367 | asection *section) |
| 1368 | { |
| 1369 | arelent **generic; |
| 1370 | unsigned char *native, *natptr; |
| 1371 | size_t each_size; |
| 1372 | |
| 1373 | unsigned int count = section->reloc_count; |
| 1374 | size_t natsize; |
| 1375 | |
| 1376 | if (count == 0) return true; |
| 1377 | |
| 1378 | each_size = obj_reloc_entry_size (abfd); |
| 1379 | natsize = each_size * count; |
| 1380 | native = (unsigned char *) bfd_zalloc (abfd, natsize); |
| 1381 | if (!native) { |
| 1382 | bfd_error = no_memory; |
| 1383 | return false; |
| 1384 | } |
| 1385 | |
| 1386 | generic = section->orelocation; |
| 1387 | |
| 1388 | if (each_size == RELOC_EXT_SIZE) |
| 1389 | { |
| 1390 | for (natptr = native; |
| 1391 | count != 0; |
| 1392 | --count, natptr += each_size, ++generic) |
| 1393 | NAME(aout,swap_ext_reloc_out) (abfd, *generic, (struct reloc_ext_external *)natptr); |
| 1394 | } |
| 1395 | else |
| 1396 | { |
| 1397 | for (natptr = native; |
| 1398 | count != 0; |
| 1399 | --count, natptr += each_size, ++generic) |
| 1400 | NAME(aout,swap_std_reloc_out)(abfd, *generic, (struct reloc_std_external *)natptr); |
| 1401 | } |
| 1402 | |
| 1403 | if ( bfd_write ((PTR) native, 1, natsize, abfd) != natsize) { |
| 1404 | bfd_release(abfd, native); |
| 1405 | return false; |
| 1406 | } |
| 1407 | bfd_release (abfd, native); |
| 1408 | |
| 1409 | return true; |
| 1410 | } |
| 1411 | |
| 1412 | /* This is stupid. This function should be a boolean predicate */ |
| 1413 | unsigned int |
| 1414 | DEFUN(NAME(aout,canonicalize_reloc),(abfd, section, relptr, symbols), |
| 1415 | bfd *abfd AND |
| 1416 | sec_ptr section AND |
| 1417 | arelent **relptr AND |
| 1418 | asymbol **symbols) |
| 1419 | { |
| 1420 | arelent *tblptr = section->relocation; |
| 1421 | unsigned int count; |
| 1422 | |
| 1423 | if (!(tblptr || NAME(aout,slurp_reloc_table)(abfd, section, symbols))) |
| 1424 | return 0; |
| 1425 | |
| 1426 | if (section->flags & SEC_CONSTRUCTOR) { |
| 1427 | arelent_chain *chain = section->constructor_chain; |
| 1428 | for (count = 0; count < section->reloc_count; count ++) { |
| 1429 | *relptr ++ = &chain->relent; |
| 1430 | chain = chain->next; |
| 1431 | } |
| 1432 | } |
| 1433 | else { |
| 1434 | tblptr = section->relocation; |
| 1435 | if (!tblptr) return 0; |
| 1436 | |
| 1437 | for (count = 0; count++ < section->reloc_count;) |
| 1438 | { |
| 1439 | *relptr++ = tblptr++; |
| 1440 | } |
| 1441 | } |
| 1442 | *relptr = 0; |
| 1443 | |
| 1444 | return section->reloc_count; |
| 1445 | } |
| 1446 | |
| 1447 | unsigned int |
| 1448 | DEFUN(NAME(aout,get_reloc_upper_bound),(abfd, asect), |
| 1449 | bfd *abfd AND |
| 1450 | sec_ptr asect) |
| 1451 | { |
| 1452 | if (bfd_get_format (abfd) != bfd_object) { |
| 1453 | bfd_error = invalid_operation; |
| 1454 | return 0; |
| 1455 | } |
| 1456 | if (asect->flags & SEC_CONSTRUCTOR) { |
| 1457 | return (sizeof (arelent *) * (asect->reloc_count+1)); |
| 1458 | } |
| 1459 | |
| 1460 | |
| 1461 | if (asect == obj_datasec (abfd)) |
| 1462 | return (sizeof (arelent *) * |
| 1463 | ((exec_hdr(abfd)->a_drsize / obj_reloc_entry_size (abfd)) |
| 1464 | +1)); |
| 1465 | |
| 1466 | if (asect == obj_textsec (abfd)) |
| 1467 | return (sizeof (arelent *) * |
| 1468 | ((exec_hdr(abfd)->a_trsize / obj_reloc_entry_size (abfd)) |
| 1469 | +1)); |
| 1470 | |
| 1471 | bfd_error = invalid_operation; |
| 1472 | return 0; |
| 1473 | } |
| 1474 | |
| 1475 | \f |
| 1476 | unsigned int |
| 1477 | DEFUN(NAME(aout,get_symtab_upper_bound),(abfd), |
| 1478 | bfd *abfd) |
| 1479 | { |
| 1480 | if (!NAME(aout,slurp_symbol_table)(abfd)) return 0; |
| 1481 | |
| 1482 | return (bfd_get_symcount (abfd)+1) * (sizeof (aout_symbol_type *)); |
| 1483 | } |
| 1484 | alent * |
| 1485 | DEFUN(NAME(aout,get_lineno),(ignore_abfd, ignore_symbol), |
| 1486 | bfd *ignore_abfd AND |
| 1487 | asymbol *ignore_symbol) |
| 1488 | { |
| 1489 | return (alent *)NULL; |
| 1490 | } |
| 1491 | |
| 1492 | |
| 1493 | void |
| 1494 | DEFUN(NAME(aout,print_symbol),(ignore_abfd, afile, symbol, how), |
| 1495 | bfd *ignore_abfd AND |
| 1496 | PTR afile AND |
| 1497 | asymbol *symbol AND |
| 1498 | bfd_print_symbol_enum_type how) |
| 1499 | { |
| 1500 | FILE *file = (FILE *)afile; |
| 1501 | |
| 1502 | switch (how) { |
| 1503 | case bfd_print_symbol_name_enum: |
| 1504 | fprintf(file,"%s", symbol->name); |
| 1505 | break; |
| 1506 | case bfd_print_symbol_type_enum: |
| 1507 | fprintf(file,"%4x %2x %2x",(unsigned)(aout_symbol(symbol)->desc & 0xffff), |
| 1508 | (unsigned)(aout_symbol(symbol)->other & 0xff), |
| 1509 | (unsigned)(aout_symbol(symbol)->type)); |
| 1510 | break; |
| 1511 | case bfd_print_symbol_all_enum: |
| 1512 | { |
| 1513 | CONST char *section_name = symbol->section == (asection *)NULL ? |
| 1514 | "*abs" : symbol->section->name; |
| 1515 | |
| 1516 | bfd_print_symbol_vandf((PTR)file,symbol); |
| 1517 | |
| 1518 | fprintf(file," %-5s %04x %02x %02x %s", |
| 1519 | section_name, |
| 1520 | (unsigned)(aout_symbol(symbol)->desc & 0xffff), |
| 1521 | (unsigned)(aout_symbol(symbol)->other & 0xff), |
| 1522 | (unsigned)(aout_symbol(symbol)->type & 0xff), |
| 1523 | symbol->name); |
| 1524 | } |
| 1525 | break; |
| 1526 | } |
| 1527 | } |
| 1528 | |
| 1529 | /* |
| 1530 | provided a bfd, a section and an offset into the section, calculate |
| 1531 | and return the name of the source file and the line nearest to the |
| 1532 | wanted location. |
| 1533 | */ |
| 1534 | |
| 1535 | boolean |
| 1536 | DEFUN(NAME(aout,find_nearest_line),(abfd, |
| 1537 | section, |
| 1538 | symbols, |
| 1539 | offset, |
| 1540 | filename_ptr, |
| 1541 | functionname_ptr, |
| 1542 | line_ptr), |
| 1543 | bfd *abfd AND |
| 1544 | asection *section AND |
| 1545 | asymbol **symbols AND |
| 1546 | bfd_vma offset AND |
| 1547 | CONST char **filename_ptr AND |
| 1548 | CONST char **functionname_ptr AND |
| 1549 | unsigned int *line_ptr) |
| 1550 | { |
| 1551 | /* Run down the file looking for the filename, function and linenumber */ |
| 1552 | asymbol **p; |
| 1553 | static char buffer[100]; |
| 1554 | bfd_vma high_line_vma = ~0; |
| 1555 | bfd_vma low_func_vma = 0; |
| 1556 | asymbol *func = 0; |
| 1557 | *filename_ptr = abfd->filename; |
| 1558 | *functionname_ptr = 0; |
| 1559 | *line_ptr = 0; |
| 1560 | if (symbols != (asymbol **)NULL) { |
| 1561 | for (p = symbols; *p; p++) { |
| 1562 | aout_symbol_type *q = (aout_symbol_type *)(*p); |
| 1563 | switch (q->type){ |
| 1564 | case N_SO: |
| 1565 | *filename_ptr = q->symbol.name; |
| 1566 | if (obj_textsec(abfd) != section) { |
| 1567 | return true; |
| 1568 | } |
| 1569 | break; |
| 1570 | case N_SLINE: |
| 1571 | |
| 1572 | case N_DSLINE: |
| 1573 | case N_BSLINE: |
| 1574 | /* We'll keep this if it resolves nearer than the one we have already */ |
| 1575 | if (q->symbol.value >= offset && |
| 1576 | q->symbol.value < high_line_vma) { |
| 1577 | *line_ptr = q->desc; |
| 1578 | high_line_vma = q->symbol.value; |
| 1579 | } |
| 1580 | break; |
| 1581 | case N_FUN: |
| 1582 | { |
| 1583 | /* We'll keep this if it is nearer than the one we have already */ |
| 1584 | if (q->symbol.value >= low_func_vma && |
| 1585 | q->symbol.value <= offset) { |
| 1586 | low_func_vma = q->symbol.value; |
| 1587 | func = (asymbol *)q; |
| 1588 | } |
| 1589 | if (*line_ptr && func) { |
| 1590 | CONST char *function = func->name; |
| 1591 | char *p; |
| 1592 | strncpy(buffer, function, sizeof(buffer)-1); |
| 1593 | buffer[sizeof(buffer)-1] = 0; |
| 1594 | /* Have to remove : stuff */ |
| 1595 | p = strchr(buffer,':'); |
| 1596 | if (p != NULL) { *p = NULL; } |
| 1597 | *functionname_ptr = buffer; |
| 1598 | return true; |
| 1599 | |
| 1600 | } |
| 1601 | } |
| 1602 | break; |
| 1603 | } |
| 1604 | } |
| 1605 | } |
| 1606 | |
| 1607 | return true; |
| 1608 | |
| 1609 | } |
| 1610 | |
| 1611 | int |
| 1612 | DEFUN(NAME(aout,sizeof_headers),(ignore_abfd, execable), |
| 1613 | bfd *ignore_abfd AND |
| 1614 | boolean execable) |
| 1615 | { |
| 1616 | return EXEC_BYTES_SIZE; |
| 1617 | } |