bfd/aoutf1.h

   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
 783 #define MY_bfd_debug_info_end           bfd_void
 784 #define MY_bfd_debug_info_accumulate    (void (*) (bfd *, struct bfd_section *)) bfd_void
 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"