| 1 | /* A.out "format 1" file handling code for BFD. |
| 2 | Copyright (C) 1990-2018 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 3 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., 51 Franklin Street - Fifth Floor, Boston, |
| 20 | MA 02110-1301, USA. */ |
| 21 | |
| 22 | #include "sysdep.h" |
| 23 | #include "bfd.h" |
| 24 | #include "libbfd.h" |
| 25 | |
| 26 | #include "aout/sun4.h" |
| 27 | #include "libaout.h" /* BFD a.out internal data structures. */ |
| 28 | |
| 29 | #include "aout/aout64.h" |
| 30 | #include "aout/stab_gnu.h" |
| 31 | #include "aout/ar.h" |
| 32 | |
| 33 | /* This is needed to reject a NewsOS file, e.g. in |
| 34 | gdb/testsuite/gdb.t10/crossload.exp. <kingdon@cygnus.com> |
| 35 | I needed to add M_UNKNOWN to recognize a 68000 object, so this will |
| 36 | probably no longer reject a NewsOS object. <ian@cygnus.com>. */ |
| 37 | #ifndef MACHTYPE_OK |
| 38 | #define MACHTYPE_OK(mtype) \ |
| 39 | (((mtype) == M_SPARC && bfd_lookup_arch (bfd_arch_sparc, 0) != NULL) \ |
| 40 | || (((mtype) == M_UNKNOWN || (mtype) == M_68010 || (mtype) == M_68020) \ |
| 41 | && bfd_lookup_arch (bfd_arch_m68k, 0) != NULL)) |
| 42 | #endif |
| 43 | |
| 44 | /* The file @code{aoutf1.h} contains the code for BFD's |
| 45 | a.out back end. Control over the generated back end is given by these |
| 46 | two preprocessor names: |
| 47 | @table @code |
| 48 | @item ARCH_SIZE |
| 49 | This value should be either 32 or 64, depending upon the size of an |
| 50 | int in the target format. It changes the sizes of the structs which |
| 51 | perform the memory/disk mapping of structures. |
| 52 | |
| 53 | The 64 bit backend may only be used if the host compiler supports 64 |
| 54 | ints (eg long long with gcc), by defining the name @code{BFD_HOST_64_BIT} in @code{bfd.h}. |
| 55 | With this name defined, @emph{all} bfd operations are performed with 64bit |
| 56 | arithmetic, not just those to a 64bit target. |
| 57 | |
| 58 | @item TARGETNAME |
| 59 | The name put into the target vector. |
| 60 | @item |
| 61 | @end table. */ |
| 62 | |
| 63 | #if ARCH_SIZE == 64 |
| 64 | #define sunos_set_arch_mach sunos_64_set_arch_mach |
| 65 | #define sunos_write_object_contents aout_64_sunos4_write_object_contents |
| 66 | #else |
| 67 | #define sunos_set_arch_mach sunos_32_set_arch_mach |
| 68 | #define sunos_write_object_contents aout_32_sunos4_write_object_contents |
| 69 | #endif |
| 70 | |
| 71 | /* Merge backend data into the output file. |
| 72 | This is necessary on sparclet-aout where we want the resultant machine |
| 73 | number to be M_SPARCLET if any input file is M_SPARCLET. */ |
| 74 | |
| 75 | #define MY_bfd_merge_private_bfd_data sunos_merge_private_bfd_data |
| 76 | |
| 77 | static bfd_boolean |
| 78 | sunos_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
| 79 | { |
| 80 | bfd *obfd = info->output_bfd; |
| 81 | if (bfd_get_flavour (ibfd) != bfd_target_aout_flavour |
| 82 | || bfd_get_flavour (obfd) != bfd_target_aout_flavour) |
| 83 | return TRUE; |
| 84 | |
| 85 | if (bfd_get_arch (obfd) == bfd_arch_sparc) |
| 86 | { |
| 87 | if (bfd_get_mach (obfd) < bfd_get_mach (ibfd)) |
| 88 | bfd_set_arch_mach (obfd, bfd_arch_sparc, bfd_get_mach (ibfd)); |
| 89 | } |
| 90 | |
| 91 | return TRUE; |
| 92 | } |
| 93 | |
| 94 | /* This is either sunos_32_set_arch_mach or sunos_64_set_arch_mach, |
| 95 | depending upon ARCH_SIZE. */ |
| 96 | |
| 97 | static void |
| 98 | sunos_set_arch_mach (bfd *abfd, enum machine_type machtype) |
| 99 | { |
| 100 | /* Determine the architecture and machine type of the object file. */ |
| 101 | enum bfd_architecture arch; |
| 102 | unsigned long machine; |
| 103 | |
| 104 | switch (machtype) |
| 105 | { |
| 106 | case M_UNKNOWN: |
| 107 | /* Some Sun3s make magic numbers without cpu types in them, so |
| 108 | we'll default to the 68000. */ |
| 109 | arch = bfd_arch_m68k; |
| 110 | machine = bfd_mach_m68000; |
| 111 | break; |
| 112 | |
| 113 | case M_68010: |
| 114 | case M_HP200: |
| 115 | arch = bfd_arch_m68k; |
| 116 | machine = bfd_mach_m68010; |
| 117 | break; |
| 118 | |
| 119 | case M_68020: |
| 120 | case M_HP300: |
| 121 | arch = bfd_arch_m68k; |
| 122 | machine = bfd_mach_m68020; |
| 123 | break; |
| 124 | |
| 125 | case M_SPARC: |
| 126 | arch = bfd_arch_sparc; |
| 127 | machine = 0; |
| 128 | break; |
| 129 | |
| 130 | case M_SPARCLET: |
| 131 | arch = bfd_arch_sparc; |
| 132 | machine = bfd_mach_sparc_sparclet; |
| 133 | break; |
| 134 | |
| 135 | case M_SPARCLITE_LE: |
| 136 | arch = bfd_arch_sparc; |
| 137 | machine = bfd_mach_sparc_sparclite_le; |
| 138 | break; |
| 139 | |
| 140 | case M_386: |
| 141 | case M_386_DYNIX: |
| 142 | arch = bfd_arch_i386; |
| 143 | machine = 0; |
| 144 | break; |
| 145 | |
| 146 | case M_HPUX: |
| 147 | arch = bfd_arch_m68k; |
| 148 | machine = 0; |
| 149 | break; |
| 150 | |
| 151 | default: |
| 152 | arch = bfd_arch_obscure; |
| 153 | machine = 0; |
| 154 | break; |
| 155 | } |
| 156 | bfd_set_arch_mach (abfd, arch, machine); |
| 157 | } |
| 158 | |
| 159 | #define SET_ARCH_MACH(ABFD, EXECP) \ |
| 160 | NAME(sunos,set_arch_mach) (ABFD, N_MACHTYPE (EXECP)); \ |
| 161 | choose_reloc_size(ABFD); |
| 162 | |
| 163 | /* Determine the size of a relocation entry, based on the architecture. */ |
| 164 | |
| 165 | static void |
| 166 | choose_reloc_size (bfd *abfd) |
| 167 | { |
| 168 | switch (bfd_get_arch (abfd)) |
| 169 | { |
| 170 | case bfd_arch_sparc: |
| 171 | obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE; |
| 172 | break; |
| 173 | default: |
| 174 | obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; |
| 175 | break; |
| 176 | } |
| 177 | } |
| 178 | |
| 179 | /* Write an object file in SunOS format. Section contents have |
| 180 | already been written. We write the file header, symbols, and |
| 181 | relocation. The real name of this function is either |
| 182 | aout_64_sunos4_write_object_contents or |
| 183 | aout_32_sunos4_write_object_contents, depending upon ARCH_SIZE. */ |
| 184 | |
| 185 | static bfd_boolean |
| 186 | sunos_write_object_contents (bfd *abfd) |
| 187 | { |
| 188 | struct external_exec exec_bytes; |
| 189 | struct internal_exec *execp = exec_hdr (abfd); |
| 190 | |
| 191 | /* Magic number, maestro, please! */ |
| 192 | switch (bfd_get_arch (abfd)) |
| 193 | { |
| 194 | case bfd_arch_m68k: |
| 195 | switch (bfd_get_mach (abfd)) |
| 196 | { |
| 197 | case bfd_mach_m68000: |
| 198 | N_SET_MACHTYPE (execp, M_UNKNOWN); |
| 199 | break; |
| 200 | case bfd_mach_m68010: |
| 201 | N_SET_MACHTYPE (execp, M_68010); |
| 202 | break; |
| 203 | default: |
| 204 | case bfd_mach_m68020: |
| 205 | N_SET_MACHTYPE (execp, M_68020); |
| 206 | break; |
| 207 | } |
| 208 | break; |
| 209 | case bfd_arch_sparc: |
| 210 | switch (bfd_get_mach (abfd)) |
| 211 | { |
| 212 | case bfd_mach_sparc_sparclet: |
| 213 | N_SET_MACHTYPE (execp, M_SPARCLET); |
| 214 | break; |
| 215 | case bfd_mach_sparc_sparclite_le: |
| 216 | N_SET_MACHTYPE (execp, M_SPARCLITE_LE); |
| 217 | break; |
| 218 | default: |
| 219 | N_SET_MACHTYPE (execp, M_SPARC); |
| 220 | break; |
| 221 | } |
| 222 | break; |
| 223 | case bfd_arch_i386: |
| 224 | N_SET_MACHTYPE (execp, M_386); |
| 225 | break; |
| 226 | default: |
| 227 | N_SET_MACHTYPE (execp, M_UNKNOWN); |
| 228 | } |
| 229 | |
| 230 | choose_reloc_size (abfd); |
| 231 | |
| 232 | N_SET_FLAGS (execp, aout_backend_info (abfd)->exec_hdr_flags); |
| 233 | |
| 234 | N_SET_DYNAMIC (execp, (long)(bfd_get_file_flags (abfd) & DYNAMIC)); |
| 235 | |
| 236 | WRITE_HEADERS (abfd, execp); |
| 237 | |
| 238 | return TRUE; |
| 239 | } |
| 240 | \f |
| 241 | /* Core files. */ |
| 242 | |
| 243 | #define CORE_MAGIC 0x080456 |
| 244 | #define CORE_NAMELEN 16 |
| 245 | |
| 246 | /* The core structure is taken from the Sun documentation. |
| 247 | Unfortunately, they don't document the FPA structure, or at least I |
| 248 | can't find it easily. Fortunately the core header contains its own |
| 249 | length. So this shouldn't cause problems, except for c_ucode, which |
| 250 | so far we don't use but is easy to find with a little arithmetic. */ |
| 251 | |
| 252 | /* But the reg structure can be gotten from the SPARC processor handbook. |
| 253 | This really should be in a GNU include file though so that gdb can use |
| 254 | the same info. */ |
| 255 | struct regs |
| 256 | { |
| 257 | int r_psr; |
| 258 | int r_pc; |
| 259 | int r_npc; |
| 260 | int r_y; |
| 261 | int r_g1; |
| 262 | int r_g2; |
| 263 | int r_g3; |
| 264 | int r_g4; |
| 265 | int r_g5; |
| 266 | int r_g6; |
| 267 | int r_g7; |
| 268 | int r_o0; |
| 269 | int r_o1; |
| 270 | int r_o2; |
| 271 | int r_o3; |
| 272 | int r_o4; |
| 273 | int r_o5; |
| 274 | int r_o6; |
| 275 | int r_o7; |
| 276 | }; |
| 277 | |
| 278 | /* Taken from Sun documentation: */ |
| 279 | |
| 280 | /* FIXME: It's worse than we expect. This struct contains TWO substructs |
| 281 | neither of whose size we know, WITH STUFF IN BETWEEN THEM! We can't |
| 282 | even portably access the stuff in between! */ |
| 283 | |
| 284 | struct external_sparc_core |
| 285 | { |
| 286 | int c_magic; /* Corefile magic number. */ |
| 287 | int c_len; /* Sizeof (struct core). */ |
| 288 | #define SPARC_CORE_LEN 432 |
| 289 | struct regs c_regs; /* General purpose registers -- MACHDEP SIZE. */ |
| 290 | struct external_exec c_aouthdr; /* A.out header. */ |
| 291 | int c_signo; /* Killing signal, if any. */ |
| 292 | int c_tsize; /* Text size (bytes). */ |
| 293 | int c_dsize; /* Data size (bytes). */ |
| 294 | int c_ssize; /* Stack size (bytes). */ |
| 295 | char c_cmdname[CORE_NAMELEN + 1]; /* Command name. */ |
| 296 | double fp_stuff[1]; /* External FPU state (size unknown by us). */ |
| 297 | /* The type "double" is critical here, for alignment. |
| 298 | SunOS declares a struct here, but the struct's |
| 299 | alignment is double since it contains doubles. */ |
| 300 | int c_ucode; /* Exception no. from u_code. */ |
| 301 | /* This member is not accessible by name since |
| 302 | we don't portably know the size of fp_stuff. */ |
| 303 | }; |
| 304 | |
| 305 | /* Core files generated by the BCP (the part of Solaris which allows |
| 306 | it to run SunOS4 a.out files). */ |
| 307 | struct external_solaris_bcp_core |
| 308 | { |
| 309 | int c_magic; /* Corefile magic number. */ |
| 310 | int c_len; /* Sizeof (struct core). */ |
| 311 | #define SOLARIS_BCP_CORE_LEN 456 |
| 312 | struct regs c_regs; /* General purpose registers -- MACHDEP SIZE. */ |
| 313 | int c_exdata_vp; /* Exdata structure. */ |
| 314 | int c_exdata_tsize; |
| 315 | int c_exdata_dsize; |
| 316 | int c_exdata_bsize; |
| 317 | int c_exdata_lsize; |
| 318 | int c_exdata_nshlibs; |
| 319 | short c_exdata_mach; |
| 320 | short c_exdata_mag; |
| 321 | int c_exdata_toffset; |
| 322 | int c_exdata_doffset; |
| 323 | int c_exdata_loffset; |
| 324 | int c_exdata_txtorg; |
| 325 | int c_exdata_datorg; |
| 326 | int c_exdata_entloc; |
| 327 | int c_signo; /* Killing signal, if any. */ |
| 328 | int c_tsize; /* Text size (bytes). */ |
| 329 | int c_dsize; /* Data size (bytes). */ |
| 330 | int c_ssize; /* Stack size (bytes). */ |
| 331 | char c_cmdname[CORE_NAMELEN + 1]; /* Command name. */ |
| 332 | double fp_stuff[1]; /* External FPU state (size unknown by us). */ |
| 333 | /* The type "double" is critical here, for alignment. |
| 334 | SunOS declares a struct here, but the struct's |
| 335 | alignment is double since it contains doubles. */ |
| 336 | int c_ucode; /* Exception no. from u_code. */ |
| 337 | /* This member is not accessible by name since |
| 338 | we don't portably know the size of fp_stuff. */ |
| 339 | }; |
| 340 | |
| 341 | struct external_sun3_core |
| 342 | { |
| 343 | int c_magic; /* Corefile magic number. */ |
| 344 | int c_len; /* Sizeof (struct core). */ |
| 345 | #define SUN3_CORE_LEN 826 /* As of SunOS 4.1.1. */ |
| 346 | int c_regs[18]; /* General purpose registers -- MACHDEP SIZE. */ |
| 347 | struct external_exec c_aouthdr; /* A.out header. */ |
| 348 | int c_signo; /* Killing signal, if any. */ |
| 349 | int c_tsize; /* Text size (bytes). */ |
| 350 | int c_dsize; /* Data size (bytes). */ |
| 351 | int c_ssize; /* Stack size (bytes). */ |
| 352 | char c_cmdname[CORE_NAMELEN + 1]; /* Command name. */ |
| 353 | double fp_stuff[1]; /* External FPU state (size unknown by us). */ |
| 354 | /* The type "double" is critical here, for alignment. |
| 355 | SunOS declares a struct here, but the struct's |
| 356 | alignment is double since it contains doubles. */ |
| 357 | int c_ucode; /* Exception no. from u_code. */ |
| 358 | /* This member is not accessible by name since |
| 359 | we don't portably know the size of fp_stuff. */ |
| 360 | }; |
| 361 | |
| 362 | struct internal_sunos_core |
| 363 | { |
| 364 | int c_magic; /* Corefile magic number. */ |
| 365 | int c_len; /* Sizeof (struct core). */ |
| 366 | long c_regs_pos; /* File offset of General purpose registers. */ |
| 367 | int c_regs_size; /* Size of General purpose registers. */ |
| 368 | struct internal_exec c_aouthdr; /* A.out header. */ |
| 369 | int c_signo; /* Killing signal, if any. */ |
| 370 | int c_tsize; /* Text size (bytes). */ |
| 371 | int c_dsize; /* Data size (bytes). */ |
| 372 | bfd_vma c_data_addr; /* Data start (address). */ |
| 373 | int c_ssize; /* Stack size (bytes). */ |
| 374 | bfd_vma c_stacktop; /* Stack top (address). */ |
| 375 | char c_cmdname[CORE_NAMELEN + 1]; /* Command name. */ |
| 376 | long fp_stuff_pos; /* File offset of external FPU state (regs). */ |
| 377 | int fp_stuff_size; /* Size of it. */ |
| 378 | int c_ucode; /* Exception no. from u_code. */ |
| 379 | }; |
| 380 | |
| 381 | /* Byte-swap in the Sun-3 core structure. */ |
| 382 | |
| 383 | static void |
| 384 | swapcore_sun3 (bfd *abfd, char *ext, struct internal_sunos_core *intcore) |
| 385 | { |
| 386 | struct external_sun3_core *extcore = (struct external_sun3_core *) ext; |
| 387 | |
| 388 | intcore->c_magic = H_GET_32 (abfd, &extcore->c_magic); |
| 389 | intcore->c_len = H_GET_32 (abfd, &extcore->c_len); |
| 390 | intcore->c_regs_pos = offsetof (struct external_sun3_core, c_regs); |
| 391 | intcore->c_regs_size = sizeof (extcore->c_regs); |
| 392 | #if ARCH_SIZE == 64 |
| 393 | aout_64_swap_exec_header_in |
| 394 | #else |
| 395 | aout_32_swap_exec_header_in |
| 396 | #endif |
| 397 | (abfd, &extcore->c_aouthdr, &intcore->c_aouthdr); |
| 398 | intcore->c_signo = H_GET_32 (abfd, &extcore->c_signo); |
| 399 | intcore->c_tsize = H_GET_32 (abfd, &extcore->c_tsize); |
| 400 | intcore->c_dsize = H_GET_32 (abfd, &extcore->c_dsize); |
| 401 | intcore->c_data_addr = N_DATADDR (&intcore->c_aouthdr); |
| 402 | intcore->c_ssize = H_GET_32 (abfd, &extcore->c_ssize); |
| 403 | memcpy (intcore->c_cmdname, extcore->c_cmdname, sizeof (intcore->c_cmdname)); |
| 404 | intcore->fp_stuff_pos = offsetof (struct external_sun3_core, fp_stuff); |
| 405 | /* FP stuff takes up whole rest of struct, except c_ucode. */ |
| 406 | intcore->fp_stuff_size = intcore->c_len - (sizeof extcore->c_ucode) - |
| 407 | offsetof (struct external_sun3_core, fp_stuff); |
| 408 | /* Ucode is the last thing in the struct -- just before the end. */ |
| 409 | intcore->c_ucode = H_GET_32 (abfd, |
| 410 | (intcore->c_len |
| 411 | - sizeof (extcore->c_ucode) |
| 412 | + (unsigned char *) extcore)); |
| 413 | intcore->c_stacktop = 0x0E000000; /* By experimentation. */ |
| 414 | } |
| 415 | |
| 416 | /* Byte-swap in the Sparc core structure. */ |
| 417 | |
| 418 | static void |
| 419 | swapcore_sparc (bfd *abfd, char *ext, struct internal_sunos_core *intcore) |
| 420 | { |
| 421 | struct external_sparc_core *extcore = (struct external_sparc_core *) ext; |
| 422 | |
| 423 | intcore->c_magic = H_GET_32 (abfd, &extcore->c_magic); |
| 424 | intcore->c_len = H_GET_32 (abfd, &extcore->c_len); |
| 425 | intcore->c_regs_pos = offsetof (struct external_sparc_core, c_regs); |
| 426 | intcore->c_regs_size = sizeof (extcore->c_regs); |
| 427 | #if ARCH_SIZE == 64 |
| 428 | aout_64_swap_exec_header_in |
| 429 | #else |
| 430 | aout_32_swap_exec_header_in |
| 431 | #endif |
| 432 | (abfd, &extcore->c_aouthdr, &intcore->c_aouthdr); |
| 433 | intcore->c_signo = H_GET_32 (abfd, &extcore->c_signo); |
| 434 | intcore->c_tsize = H_GET_32 (abfd, &extcore->c_tsize); |
| 435 | intcore->c_dsize = H_GET_32 (abfd, &extcore->c_dsize); |
| 436 | intcore->c_data_addr = N_DATADDR (&intcore->c_aouthdr); |
| 437 | intcore->c_ssize = H_GET_32 (abfd, &extcore->c_ssize); |
| 438 | memcpy (intcore->c_cmdname, extcore->c_cmdname, sizeof (intcore->c_cmdname)); |
| 439 | intcore->fp_stuff_pos = offsetof (struct external_sparc_core, fp_stuff); |
| 440 | /* FP stuff takes up whole rest of struct, except c_ucode. */ |
| 441 | intcore->fp_stuff_size = intcore->c_len - (sizeof extcore->c_ucode) - |
| 442 | offsetof (struct external_sparc_core, fp_stuff); |
| 443 | /* Ucode is the last thing in the struct -- just before the end. */ |
| 444 | intcore->c_ucode = H_GET_32 (abfd, |
| 445 | (intcore->c_len |
| 446 | - sizeof (extcore->c_ucode) |
| 447 | + (unsigned char *) extcore)); |
| 448 | |
| 449 | /* Supposedly the user stack grows downward from the bottom of kernel memory. |
| 450 | Presuming that this remains true, this definition will work. */ |
| 451 | /* Now sun has provided us with another challenge. The value is different |
| 452 | for sparc2 and sparc10 (both running SunOS 4.1.3). We pick one or |
| 453 | the other based on the current value of the stack pointer. This |
| 454 | loses (a) if the stack pointer has been clobbered, or (b) if the stack |
| 455 | is larger than 128 megabytes. |
| 456 | |
| 457 | It's times like these you're glad they're switching to ELF. |
| 458 | |
| 459 | Note that using include files or nlist on /vmunix would be wrong, |
| 460 | because we want the value for this core file, no matter what kind of |
| 461 | machine we were compiled on or are running on. */ |
| 462 | #define SPARC_USRSTACK_SPARC2 ((bfd_vma)0xf8000000) |
| 463 | #define SPARC_USRSTACK_SPARC10 ((bfd_vma)0xf0000000) |
| 464 | { |
| 465 | bfd_vma sp = H_GET_32 (abfd, &extcore->c_regs.r_o6); |
| 466 | if (sp < SPARC_USRSTACK_SPARC10) |
| 467 | intcore->c_stacktop = SPARC_USRSTACK_SPARC10; |
| 468 | else |
| 469 | intcore->c_stacktop = SPARC_USRSTACK_SPARC2; |
| 470 | } |
| 471 | } |
| 472 | |
| 473 | /* Byte-swap in the Solaris BCP core structure. */ |
| 474 | |
| 475 | static void |
| 476 | swapcore_solaris_bcp (bfd *abfd, char *ext, struct internal_sunos_core *intcore) |
| 477 | { |
| 478 | struct external_solaris_bcp_core *extcore = |
| 479 | (struct external_solaris_bcp_core *) ext; |
| 480 | |
| 481 | intcore->c_magic = H_GET_32 (abfd, &extcore->c_magic); |
| 482 | intcore->c_len = H_GET_32 (abfd, &extcore->c_len); |
| 483 | intcore->c_regs_pos = offsetof (struct external_solaris_bcp_core, c_regs); |
| 484 | intcore->c_regs_size = sizeof (extcore->c_regs); |
| 485 | |
| 486 | /* The Solaris BCP exdata structure does not contain an a_syms field, |
| 487 | so we are unable to synthesize an internal exec header. |
| 488 | Luckily we are able to figure out the start address of the data section, |
| 489 | which is the only thing needed from the internal exec header, |
| 490 | from the exdata structure. |
| 491 | |
| 492 | As of Solaris 2.3, BCP core files for statically linked executables |
| 493 | are buggy. The exdata structure is not properly filled in, and |
| 494 | the data section is written from address zero instead of the data |
| 495 | start address. */ |
| 496 | memset ((void *) &intcore->c_aouthdr, 0, sizeof (struct internal_exec)); |
| 497 | intcore->c_data_addr = H_GET_32 (abfd, &extcore->c_exdata_datorg); |
| 498 | intcore->c_signo = H_GET_32 (abfd, &extcore->c_signo); |
| 499 | intcore->c_tsize = H_GET_32 (abfd, &extcore->c_tsize); |
| 500 | intcore->c_dsize = H_GET_32 (abfd, &extcore->c_dsize); |
| 501 | intcore->c_ssize = H_GET_32 (abfd, &extcore->c_ssize); |
| 502 | memcpy (intcore->c_cmdname, extcore->c_cmdname, sizeof (intcore->c_cmdname)); |
| 503 | intcore->fp_stuff_pos = |
| 504 | offsetof (struct external_solaris_bcp_core, fp_stuff); |
| 505 | /* FP stuff takes up whole rest of struct, except c_ucode. */ |
| 506 | intcore->fp_stuff_size = intcore->c_len - (sizeof extcore->c_ucode) - |
| 507 | offsetof (struct external_solaris_bcp_core, fp_stuff); |
| 508 | /* Ucode is the last thing in the struct -- just before the end */ |
| 509 | intcore->c_ucode = H_GET_32 (abfd, |
| 510 | (intcore->c_len |
| 511 | - sizeof (extcore->c_ucode) |
| 512 | + (unsigned char *) extcore)); |
| 513 | |
| 514 | /* Supposedly the user stack grows downward from the bottom of kernel memory. |
| 515 | Presuming that this remains true, this definition will work. */ |
| 516 | /* Now sun has provided us with another challenge. The value is different |
| 517 | for sparc2 and sparc10 (both running SunOS 4.1.3). We pick one or |
| 518 | the other based on the current value of the stack pointer. This |
| 519 | loses (a) if the stack pointer has been clobbered, or (b) if the stack |
| 520 | is larger than 128 megabytes. |
| 521 | |
| 522 | It's times like these you're glad they're switching to ELF. |
| 523 | |
| 524 | Note that using include files or nlist on /vmunix would be wrong, |
| 525 | because we want the value for this core file, no matter what kind of |
| 526 | machine we were compiled on or are running on. */ |
| 527 | #define SPARC_USRSTACK_SPARC2 ((bfd_vma)0xf8000000) |
| 528 | #define SPARC_USRSTACK_SPARC10 ((bfd_vma)0xf0000000) |
| 529 | { |
| 530 | bfd_vma sp = H_GET_32 (abfd, &extcore->c_regs.r_o6); |
| 531 | if (sp < SPARC_USRSTACK_SPARC10) |
| 532 | intcore->c_stacktop = SPARC_USRSTACK_SPARC10; |
| 533 | else |
| 534 | intcore->c_stacktop = SPARC_USRSTACK_SPARC2; |
| 535 | } |
| 536 | } |
| 537 | |
| 538 | /* Need this cast because ptr is really void *. */ |
| 539 | #define core_hdr(bfd) ((bfd)->tdata.sun_core_data) |
| 540 | #define core_datasec(bfd) (core_hdr (bfd)->data_section) |
| 541 | #define core_stacksec(bfd) (core_hdr (bfd)->stack_section) |
| 542 | #define core_regsec(bfd) (core_hdr (bfd)->reg_section) |
| 543 | #define core_reg2sec(bfd) (core_hdr (bfd)->reg2_section) |
| 544 | |
| 545 | /* These are stored in the bfd's tdata. */ |
| 546 | struct sun_core_struct |
| 547 | { |
| 548 | struct internal_sunos_core *hdr; /* Core file header. */ |
| 549 | asection *data_section; |
| 550 | asection *stack_section; |
| 551 | asection *reg_section; |
| 552 | asection *reg2_section; |
| 553 | }; |
| 554 | |
| 555 | static const bfd_target * |
| 556 | sunos4_core_file_p (bfd *abfd) |
| 557 | { |
| 558 | unsigned char longbuf[4]; /* Raw bytes of various header fields. */ |
| 559 | bfd_size_type core_size, amt; |
| 560 | unsigned long core_mag; |
| 561 | struct internal_sunos_core *core; |
| 562 | char *extcore; |
| 563 | struct mergem |
| 564 | { |
| 565 | struct sun_core_struct suncoredata; |
| 566 | struct internal_sunos_core internal_sunos_core; |
| 567 | char external_core[1]; |
| 568 | } *mergem; |
| 569 | flagword flags; |
| 570 | |
| 571 | if (bfd_bread ((void *) longbuf, (bfd_size_type) sizeof (longbuf), abfd) |
| 572 | != sizeof (longbuf)) |
| 573 | return NULL; |
| 574 | core_mag = H_GET_32 (abfd, longbuf); |
| 575 | |
| 576 | if (core_mag != CORE_MAGIC) |
| 577 | return NULL; |
| 578 | |
| 579 | /* SunOS core headers can vary in length; second word is size; */ |
| 580 | if (bfd_bread ((void *) longbuf, (bfd_size_type) sizeof (longbuf), abfd) |
| 581 | != sizeof (longbuf)) |
| 582 | return NULL; |
| 583 | core_size = H_GET_32 (abfd, longbuf); |
| 584 | /* Sanity check. */ |
| 585 | if (core_size > 20000) |
| 586 | return NULL; |
| 587 | |
| 588 | if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) |
| 589 | return NULL; |
| 590 | |
| 591 | amt = core_size + sizeof (struct mergem); |
| 592 | mergem = bfd_zalloc (abfd, amt); |
| 593 | if (mergem == NULL) |
| 594 | return NULL; |
| 595 | |
| 596 | extcore = mergem->external_core; |
| 597 | |
| 598 | if ((bfd_bread ((void *) extcore, core_size, abfd)) != core_size) |
| 599 | { |
| 600 | loser: |
| 601 | bfd_release (abfd, (char *) mergem); |
| 602 | abfd->tdata.any = NULL; |
| 603 | bfd_section_list_clear (abfd); |
| 604 | return NULL; |
| 605 | } |
| 606 | |
| 607 | /* Validate that it's a core file we know how to handle, due to sun |
| 608 | botching the positioning of registers and other fields in a machine |
| 609 | dependent way. */ |
| 610 | core = &mergem->internal_sunos_core; |
| 611 | switch (core_size) |
| 612 | { |
| 613 | case SPARC_CORE_LEN: |
| 614 | swapcore_sparc (abfd, extcore, core); |
| 615 | break; |
| 616 | case SUN3_CORE_LEN: |
| 617 | swapcore_sun3 (abfd, extcore, core); |
| 618 | break; |
| 619 | case SOLARIS_BCP_CORE_LEN: |
| 620 | swapcore_solaris_bcp (abfd, extcore, core); |
| 621 | break; |
| 622 | default: |
| 623 | bfd_set_error (bfd_error_system_call); /* FIXME. */ |
| 624 | goto loser; |
| 625 | } |
| 626 | |
| 627 | abfd->tdata.sun_core_data = &mergem->suncoredata; |
| 628 | abfd->tdata.sun_core_data->hdr = core; |
| 629 | |
| 630 | /* Create the sections. */ |
| 631 | flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS; |
| 632 | core_stacksec (abfd) = bfd_make_section_anyway_with_flags (abfd, ".stack", |
| 633 | flags); |
| 634 | if (core_stacksec (abfd) == NULL) |
| 635 | /* bfd_release frees everything allocated after it's arg. */ |
| 636 | goto loser; |
| 637 | |
| 638 | flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS; |
| 639 | core_datasec (abfd) = bfd_make_section_anyway_with_flags (abfd, ".data", |
| 640 | flags); |
| 641 | if (core_datasec (abfd) == NULL) |
| 642 | goto loser; |
| 643 | |
| 644 | flags = SEC_HAS_CONTENTS; |
| 645 | core_regsec (abfd) = bfd_make_section_anyway_with_flags (abfd, ".reg", |
| 646 | flags); |
| 647 | if (core_regsec (abfd) == NULL) |
| 648 | goto loser; |
| 649 | |
| 650 | flags = SEC_HAS_CONTENTS; |
| 651 | core_reg2sec (abfd) = bfd_make_section_anyway_with_flags (abfd, ".reg2", |
| 652 | flags); |
| 653 | if (core_reg2sec (abfd) == NULL) |
| 654 | goto loser; |
| 655 | |
| 656 | core_stacksec (abfd)->size = core->c_ssize; |
| 657 | core_datasec (abfd)->size = core->c_dsize; |
| 658 | core_regsec (abfd)->size = core->c_regs_size; |
| 659 | core_reg2sec (abfd)->size = core->fp_stuff_size; |
| 660 | |
| 661 | core_stacksec (abfd)->vma = (core->c_stacktop - core->c_ssize); |
| 662 | core_datasec (abfd)->vma = core->c_data_addr; |
| 663 | core_regsec (abfd)->vma = 0; |
| 664 | core_reg2sec (abfd)->vma = 0; |
| 665 | |
| 666 | core_stacksec (abfd)->filepos = core->c_len + core->c_dsize; |
| 667 | core_datasec (abfd)->filepos = core->c_len; |
| 668 | /* We'll access the regs afresh in the core file, like any section: */ |
| 669 | core_regsec (abfd)->filepos = (file_ptr) core->c_regs_pos; |
| 670 | core_reg2sec (abfd)->filepos = (file_ptr) core->fp_stuff_pos; |
| 671 | |
| 672 | /* Align to word at least. */ |
| 673 | core_stacksec (abfd)->alignment_power = 2; |
| 674 | core_datasec (abfd)->alignment_power = 2; |
| 675 | core_regsec (abfd)->alignment_power = 2; |
| 676 | core_reg2sec (abfd)->alignment_power = 2; |
| 677 | |
| 678 | return abfd->xvec; |
| 679 | } |
| 680 | |
| 681 | static char * |
| 682 | sunos4_core_file_failing_command (bfd *abfd) |
| 683 | { |
| 684 | return core_hdr (abfd)->hdr->c_cmdname; |
| 685 | } |
| 686 | |
| 687 | static int |
| 688 | sunos4_core_file_failing_signal (bfd *abfd) |
| 689 | { |
| 690 | return core_hdr (abfd)->hdr->c_signo; |
| 691 | } |
| 692 | |
| 693 | static bfd_boolean |
| 694 | sunos4_core_file_matches_executable_p (bfd *core_bfd, bfd *exec_bfd) |
| 695 | { |
| 696 | if (core_bfd->xvec != exec_bfd->xvec) |
| 697 | { |
| 698 | bfd_set_error (bfd_error_system_call); |
| 699 | return FALSE; |
| 700 | } |
| 701 | |
| 702 | /* Solaris core files do not include an aouthdr. */ |
| 703 | if ((core_hdr (core_bfd)->hdr)->c_len == SOLARIS_BCP_CORE_LEN) |
| 704 | return TRUE; |
| 705 | |
| 706 | return memcmp ((char *) &((core_hdr (core_bfd)->hdr)->c_aouthdr), |
| 707 | (char *) exec_hdr (exec_bfd), |
| 708 | sizeof (struct internal_exec)) == 0; |
| 709 | } |
| 710 | |
| 711 | #define MY_set_sizes sunos4_set_sizes |
| 712 | |
| 713 | static bfd_boolean |
| 714 | sunos4_set_sizes (bfd *abfd) |
| 715 | { |
| 716 | switch (bfd_get_arch (abfd)) |
| 717 | { |
| 718 | default: |
| 719 | return FALSE; |
| 720 | case bfd_arch_sparc: |
| 721 | adata (abfd).page_size = 0x2000; |
| 722 | adata (abfd).segment_size = 0x2000; |
| 723 | adata (abfd).exec_bytes_size = EXEC_BYTES_SIZE; |
| 724 | return TRUE; |
| 725 | case bfd_arch_m68k: |
| 726 | adata (abfd).page_size = 0x2000; |
| 727 | adata (abfd).segment_size = 0x20000; |
| 728 | adata (abfd).exec_bytes_size = EXEC_BYTES_SIZE; |
| 729 | return TRUE; |
| 730 | } |
| 731 | } |
| 732 | |
| 733 | /* We default to setting the toolversion field to 1, as is required by |
| 734 | SunOS. */ |
| 735 | #ifndef MY_exec_hdr_flags |
| 736 | #define MY_exec_hdr_flags 1 |
| 737 | #endif |
| 738 | |
| 739 | #ifndef MY_entry_is_text_address |
| 740 | #define MY_entry_is_text_address 0 |
| 741 | #endif |
| 742 | #ifndef MY_add_dynamic_symbols |
| 743 | #define MY_add_dynamic_symbols 0 |
| 744 | #endif |
| 745 | #ifndef MY_add_one_symbol |
| 746 | #define MY_add_one_symbol 0 |
| 747 | #endif |
| 748 | #ifndef MY_link_dynamic_object |
| 749 | #define MY_link_dynamic_object 0 |
| 750 | #endif |
| 751 | #ifndef MY_write_dynamic_symbol |
| 752 | #define MY_write_dynamic_symbol 0 |
| 753 | #endif |
| 754 | #ifndef MY_check_dynamic_reloc |
| 755 | #define MY_check_dynamic_reloc 0 |
| 756 | #endif |
| 757 | #ifndef MY_finish_dynamic_link |
| 758 | #define MY_finish_dynamic_link 0 |
| 759 | #endif |
| 760 | |
| 761 | static const struct aout_backend_data sunos4_aout_backend = |
| 762 | { |
| 763 | 0, /* Zmagic files are not contiguous. */ |
| 764 | 1, /* Text includes header. */ |
| 765 | MY_entry_is_text_address, |
| 766 | MY_exec_hdr_flags, |
| 767 | 0, /* Default text vma. */ |
| 768 | sunos4_set_sizes, |
| 769 | 0, /* Header is counted in zmagic text. */ |
| 770 | MY_add_dynamic_symbols, |
| 771 | MY_add_one_symbol, |
| 772 | MY_link_dynamic_object, |
| 773 | MY_write_dynamic_symbol, |
| 774 | MY_check_dynamic_reloc, |
| 775 | MY_finish_dynamic_link |
| 776 | }; |
| 777 | \f |
| 778 | #define MY_core_file_failing_command sunos4_core_file_failing_command |
| 779 | #define MY_core_file_failing_signal sunos4_core_file_failing_signal |
| 780 | #define MY_core_file_matches_executable_p sunos4_core_file_matches_executable_p |
| 781 | |
| 782 | #define MY_bfd_debug_info_start _bfd_void_bfd |
| 783 | #define MY_bfd_debug_info_end _bfd_void_bfd |
| 784 | #define MY_bfd_debug_info_accumulate _bfd_void_bfd_asection |
| 785 | #define MY_core_file_p sunos4_core_file_p |
| 786 | #define MY_write_object_contents NAME(aout, sunos4_write_object_contents) |
| 787 | #define MY_backend_data & sunos4_aout_backend |
| 788 | |
| 789 | #ifndef TARGET_IS_LITTLE_ENDIAN_P |
| 790 | #define TARGET_IS_BIG_ENDIAN_P |
| 791 | #endif |
| 792 | |
| 793 | #include "aout-target.h" |