bfd/sparclynx.c

   1 /* BFD support for Sparc binaries under LynxOS.
   2    Copyright (C) 1990, 91, 92, 93, 94, 95, 1997 Free Software Foundation, Inc.
   3
   4 This file is part of BFD, the Binary File Descriptor library.
   5
   6 This program is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2 of the License, or
   9 (at your option) any later version.
  10
  11 This program is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with this program; if not, write to the Free Software
  18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  19
  20 #if 0
  21 #define BYTES_IN_WORD 4
  22 #define N_SHARED_LIB(x) 0
  23
  24 #define TEXT_START_ADDR 0
  25 #define TARGET_PAGE_SIZE 4096
  26 #define SEGMENT_SIZE TARGET_PAGE_SIZE
  27 #define DEFAULT_ARCH bfd_arch_sparc
  28
  29 #endif
  30
  31 #define MY(OP) CAT(sparclynx_aout_,OP)
  32 #define TARGETNAME "a.out-sparc-lynx"
  33
  34 #include "bfd.h"
  35 #include "sysdep.h"
  36 #include "libbfd.h"
  37
  38 #include "aout/sun4.h"
  39 #include "libaout.h"            /* BFD a.out internal data structures */
  40
  41 #include "aout/aout64.h"
  42 #include "aout/stab_gnu.h"
  43 #include "aout/ar.h"
  44
  45 /* This is needed to reject a NewsOS file, e.g. in
  46    gdb/testsuite/gdb.t10/crossload.exp. <kingdon@cygnus.com>
  47    I needed to add M_UNKNOWN to recognize a 68000 object, so this will
  48    probably no longer reject a NewsOS object.  <ian@cygnus.com>. */
  49 #define MACHTYPE_OK(mtype) ((mtype) == M_UNKNOWN \
  50                             || (mtype) == M_68010 \
  51                             || (mtype) == M_68020 \
  52                             || (mtype) == M_SPARC)
  53
  54 /*
  55 The file @code{aoutf1.h} contains the code for BFD's
  56 a.out back end. Control over the generated back end is given by these
  57 two preprocessor names:
  58 @table @code
  59 @item ARCH_SIZE
  60 This value should be either 32 or 64, depending upon the size of an
  61 int in the target format. It changes the sizes of the structs which
  62 perform the memory/disk mapping of structures.
  63
  64 The 64 bit backend may only be used if the host compiler supports 64
  65 ints (eg long long with gcc), by defining the name @code{BFD_HOST_64_BIT} in @code{bfd.h}.
  66 With this name defined, @emph{all} bfd operations are performed with 64bit
  67 arithmetic, not just those to a 64bit target.
  68
  69 @item TARGETNAME
  70 The name put into the target vector.
  71 @item
  72 @end table
  73
  74 */
  75
  76 /*SUPPRESS558*/
  77 /*SUPPRESS529*/
  78
  79 void
  80 NAME(lynx,set_arch_mach) (abfd, machtype)
  81      bfd *abfd;
  82      int machtype;
  83 {
  84   /* Determine the architecture and machine type of the object file.  */
  85   enum bfd_architecture arch;
  86   long machine;
  87   switch (machtype)
  88     {
  89
  90     case M_UNKNOWN:
  91       /* Some Sun3s make magic numbers without cpu types in them, so
  92          we'll default to the 68000. */
  93       arch = bfd_arch_m68k;
  94       machine = bfd_mach_m68000;
  95       break;
  96
  97     case M_68010:
  98     case M_HP200:
  99       arch = bfd_arch_m68k;
 100       machine = bfd_mach_m68010;
 101       break;
 102
 103     case M_68020:
 104     case M_HP300:
 105       arch = bfd_arch_m68k;
 106       machine = bfd_mach_m68020;
 107       break;
 108
 109     case M_SPARC:
 110       arch = bfd_arch_sparc;
 111       machine = 0;
 112       break;
 113
 114     case M_386:
 115     case M_386_DYNIX:
 116       arch = bfd_arch_i386;
 117       machine = 0;
 118       break;
 119
 120     case M_29K:
 121       arch = bfd_arch_a29k;
 122       machine = 0;
 123       break;
 124
 125     case M_HPUX:
 126       arch = bfd_arch_m68k;
 127       machine = 0;
 128       break;
 129
 130     default:
 131       arch = bfd_arch_obscure;
 132       machine = 0;
 133       break;
 134     }
 135   bfd_set_arch_mach (abfd, arch, machine);
 136 }
 137
 138 #define SET_ARCH_MACH(ABFD, EXEC) \
 139   NAME(lynx,set_arch_mach)(ABFD, N_MACHTYPE (EXEC)); \
 140   choose_reloc_size(ABFD);
 141
 142 /* Determine the size of a relocation entry, based on the architecture */
 143 static void
 144 choose_reloc_size (abfd)
 145      bfd *abfd;
 146 {
 147   switch (bfd_get_arch (abfd))
 148     {
 149     case bfd_arch_sparc:
 150     case bfd_arch_a29k:
 151       obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE;
 152       break;
 153     default:
 154       obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
 155       break;
 156     }
 157 }
 158
 159 /* Write an object file in LynxOS format.
 160   Section contents have already been written.  We write the
 161   file header, symbols, and relocation.  */
 162
 163 static boolean
 164 NAME(aout,sparclynx_write_object_contents) (abfd)
 165      bfd *abfd;
 166 {
 167   struct external_exec exec_bytes;
 168   struct internal_exec *execp = exec_hdr (abfd);
 169
 170   /* Magic number, maestro, please!  */
 171   switch (bfd_get_arch (abfd))
 172     {
 173     case bfd_arch_m68k:
 174       switch (bfd_get_mach (abfd))
 175         {
 176         case bfd_mach_m68010:
 177           N_SET_MACHTYPE (*execp, M_68010);
 178           break;
 179         default:
 180         case bfd_mach_m68020:
 181           N_SET_MACHTYPE (*execp, M_68020);
 182           break;
 183         }
 184       break;
 185     case bfd_arch_sparc:
 186       N_SET_MACHTYPE (*execp, M_SPARC);
 187       break;
 188     case bfd_arch_i386:
 189       N_SET_MACHTYPE (*execp, M_386);
 190       break;
 191     case bfd_arch_a29k:
 192       N_SET_MACHTYPE (*execp, M_29K);
 193       break;
 194     default:
 195       N_SET_MACHTYPE (*execp, M_UNKNOWN);
 196     }
 197
 198   choose_reloc_size (abfd);
 199
 200   N_SET_FLAGS (*execp, aout_backend_info (abfd)->exec_hdr_flags);
 201
 202   WRITE_HEADERS (abfd, execp);
 203
 204   return true;
 205 }
 206
 207 #define MY_set_sizes sparclynx_set_sizes
 208 static boolean
 209 sparclynx_set_sizes (abfd)
 210      bfd *abfd;
 211 {
 212   switch (bfd_get_arch (abfd))
 213     {
 214     default:
 215       return false;
 216     case bfd_arch_sparc:
 217       adata (abfd).page_size = 0x2000;
 218       adata (abfd).segment_size = 0x2000;
 219       adata (abfd).exec_bytes_size = EXEC_BYTES_SIZE;
 220       return true;
 221     case bfd_arch_m68k:
 222       adata (abfd).page_size = 0x2000;
 223       adata (abfd).segment_size = 0x20000;
 224       adata (abfd).exec_bytes_size = EXEC_BYTES_SIZE;
 225       return true;
 226     }
 227 }
 228
 229 static CONST struct aout_backend_data sparclynx_aout_backend =
 230 {
 231   0, 1, 0, 1, 0, sparclynx_set_sizes, 0,
 232   0,                            /* add_dynamic_symbols */
 233   0,                            /* add_one_symbol */
 234   0,                            /* link_dynamic_object */
 235   0,                            /* write_dynamic_symbol */
 236   0,                            /* check_dynamic_reloc */
 237   0                             /* finish_dynamic_link */
 238 };
 239 \f
 240
 241 #define MY_bfd_debug_info_start         bfd_void
 242 #define MY_bfd_debug_info_end           bfd_void
 243 #define MY_bfd_debug_info_accumulate    \
 244                         (void (*) PARAMS ((bfd *, struct sec *))) bfd_void
 245
 246 #define MY_write_object_contents        NAME(aout,sparclynx_write_object_contents)
 247 #define MY_backend_data                 &sparclynx_aout_backend
 248
 249 #define TARGET_IS_BIG_ENDIAN_P
 250
 251 #ifdef LYNX_CORE
 252
 253 char *lynx_core_file_failing_command ();
 254 int lynx_core_file_failing_signal ();
 255 boolean lynx_core_file_matches_executable_p ();
 256 const bfd_target *lynx_core_file_p ();
 257
 258 #define MY_core_file_failing_command lynx_core_file_failing_command
 259 #define MY_core_file_failing_signal lynx_core_file_failing_signal
 260 #define MY_core_file_matches_executable_p lynx_core_file_matches_executable_p
 261 #define MY_core_file_p lynx_core_file_p
 262
 263 #endif /* LYNX_CORE */
 264
 265 #include "aout-target.h"