bfd/sparclynx.c

   1 /* BFD support for Sparc binaries under LynxOS.
   2    Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1997, 1998, 2000,
   3    2001, 2002, 2003, 2005 Free Software Foundation, Inc.
   4
   5 This file is part of BFD, the Binary File Descriptor library.
   6
   7 This program is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2 of the License, or
  10 (at your option) any later version.
  11
  12 This program is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with this program; if not, write to the Free Software
  19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
  20
  21 /* Do not "beautify" the CONCAT* macro args.  Traditional C will not
  22    remove whitespace added here, and thus will fail to concatenate
  23    the tokens.  */
  24 #define MY(OP) CONCAT2 (sparclynx_aout_,OP)
  25 #define TARGETNAME "a.out-sparc-lynx"
  26
  27 #include "bfd.h"
  28 #include "sysdep.h"
  29 #include "libbfd.h"
  30
  31 #include "aout/sun4.h"
  32 #include "libaout.h"            /* BFD a.out internal data structures */
  33
  34 #include "aout/aout64.h"
  35 #include "aout/stab_gnu.h"
  36 #include "aout/ar.h"
  37
  38 void NAME (lynx,set_arch_mach) PARAMS ((bfd *, unsigned long));
  39 static void choose_reloc_size PARAMS ((bfd *));
  40 static bfd_boolean NAME (aout,sparclynx_write_object_contents) PARAMS ((bfd *));
  41
  42 /* This is needed to reject a NewsOS file, e.g. in
  43    gdb/testsuite/gdb.t10/crossload.exp. <kingdon@cygnus.com>
  44    I needed to add M_UNKNOWN to recognize a 68000 object, so this will
  45    probably no longer reject a NewsOS object.  <ian@cygnus.com>.  */
  46 #define MACHTYPE_OK(mtype) ((mtype) == M_UNKNOWN \
  47                             || (mtype) == M_68010 \
  48                             || (mtype) == M_68020 \
  49                             || (mtype) == M_SPARC)
  50
  51 /* The file @code{aoutf1.h} contains the code for BFD's
  52    a.out back end. Control over the generated back end is given by these
  53    two preprocessor names:
  54    @table @code
  55    @item ARCH_SIZE
  56    This value should be either 32 or 64, depending upon the size of an
  57    int in the target format. It changes the sizes of the structs which
  58    perform the memory/disk mapping of structures.
  59
  60    The 64 bit backend may only be used if the host compiler supports 64
  61    ints (eg long long with gcc), by defining the name @code{BFD_HOST_64_BIT} in @code{bfd.h}.
  62    With this name defined, @emph{all} bfd operations are performed with 64bit
  63    arithmetic, not just those to a 64bit target.
  64
  65    @item TARGETNAME
  66    The name put into the target vector.
  67    @item
  68    @end table  */
  69
  70 void
  71 NAME(lynx,set_arch_mach) (abfd, machtype)
  72      bfd *abfd;
  73      unsigned long machtype;
  74 {
  75   /* Determine the architecture and machine type of the object file.  */
  76   enum bfd_architecture arch;
  77   unsigned long machine;
  78
  79   switch (machtype)
  80     {
  81     case M_UNKNOWN:
  82       /* Some Sun3s make magic numbers without cpu types in them, so
  83          we'll default to the 68000.  */
  84       arch = bfd_arch_m68k;
  85       machine = bfd_mach_m68000;
  86       break;
  87
  88     case M_68010:
  89     case M_HP200:
  90       arch = bfd_arch_m68k;
  91       machine = bfd_mach_m68010;
  92       break;
  93
  94     case M_68020:
  95     case M_HP300:
  96       arch = bfd_arch_m68k;
  97       machine = bfd_mach_m68020;
  98       break;
  99
 100     case M_SPARC:
 101       arch = bfd_arch_sparc;
 102       machine = 0;
 103       break;
 104
 105     case M_386:
 106     case M_386_DYNIX:
 107       arch = bfd_arch_i386;
 108       machine = 0;
 109       break;
 110
 111     case M_HPUX:
 112       arch = bfd_arch_m68k;
 113       machine = 0;
 114       break;
 115
 116     default:
 117       arch = bfd_arch_obscure;
 118       machine = 0;
 119       break;
 120     }
 121   bfd_set_arch_mach (abfd, arch, machine);
 122 }
 123
 124 #define SET_ARCH_MACH(ABFD, EXEC) \
 125   NAME(lynx,set_arch_mach) (ABFD, N_MACHTYPE (EXEC)); \
 126   choose_reloc_size(ABFD);
 127
 128 /* Determine the size of a relocation entry, based on the architecture.  */
 129
 130 static void
 131 choose_reloc_size (abfd)
 132      bfd *abfd;
 133 {
 134   switch (bfd_get_arch (abfd))
 135     {
 136     case bfd_arch_sparc:
 137       obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE;
 138       break;
 139     default:
 140       obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
 141       break;
 142     }
 143 }
 144
 145 /* Write an object file in LynxOS format.
 146   Section contents have already been written.  We write the
 147   file header, symbols, and relocation.  */
 148
 149 static bfd_boolean
 150 NAME(aout,sparclynx_write_object_contents) (abfd)
 151      bfd *abfd;
 152 {
 153   struct external_exec exec_bytes;
 154   struct internal_exec *execp = exec_hdr (abfd);
 155
 156   /* Magic number, maestro, please!  */
 157   switch (bfd_get_arch (abfd))
 158     {
 159     case bfd_arch_m68k:
 160       switch (bfd_get_mach (abfd))
 161         {
 162         case bfd_mach_m68010:
 163           N_SET_MACHTYPE (*execp, M_68010);
 164           break;
 165         default:
 166         case bfd_mach_m68020:
 167           N_SET_MACHTYPE (*execp, M_68020);
 168           break;
 169         }
 170       break;
 171     case bfd_arch_sparc:
 172       N_SET_MACHTYPE (*execp, M_SPARC);
 173       break;
 174     case bfd_arch_i386:
 175       N_SET_MACHTYPE (*execp, M_386);
 176       break;
 177     default:
 178       N_SET_MACHTYPE (*execp, M_UNKNOWN);
 179     }
 180
 181   choose_reloc_size (abfd);
 182
 183   N_SET_FLAGS (*execp, aout_backend_info (abfd)->exec_hdr_flags);
 184
 185   WRITE_HEADERS (abfd, execp);
 186
 187   return TRUE;
 188 }
 189
 190 #define MY_set_sizes sparclynx_set_sizes
 191 static bfd_boolean sparclynx_set_sizes PARAMS ((bfd *));
 192
 193 static bfd_boolean
 194 sparclynx_set_sizes (abfd)
 195      bfd *abfd;
 196 {
 197   switch (bfd_get_arch (abfd))
 198     {
 199     default:
 200       return FALSE;
 201     case bfd_arch_sparc:
 202       adata (abfd).page_size = 0x2000;
 203       adata (abfd).segment_size = 0x2000;
 204       adata (abfd).exec_bytes_size = EXEC_BYTES_SIZE;
 205       return TRUE;
 206     case bfd_arch_m68k:
 207       adata (abfd).page_size = 0x2000;
 208       adata (abfd).segment_size = 0x20000;
 209       adata (abfd).exec_bytes_size = EXEC_BYTES_SIZE;
 210       return TRUE;
 211     }
 212 }
 213
 214 static const struct aout_backend_data sparclynx_aout_backend =
 215   {
 216     0, 1, 0, 1, 0, sparclynx_set_sizes, 0,
 217     0,                          /* add_dynamic_symbols */
 218     0,                          /* add_one_symbol */
 219     0,                          /* link_dynamic_object */
 220     0,                          /* write_dynamic_symbol */
 221     0,                          /* check_dynamic_reloc */
 222     0                           /* finish_dynamic_link */
 223   };
 224 \f
 225
 226 #define MY_bfd_debug_info_start         bfd_void
 227 #define MY_bfd_debug_info_end           bfd_void
 228 #define MY_bfd_debug_info_accumulate    \
 229                 (void (*) PARAMS ((bfd *, struct bfd_section *))) bfd_void
 230
 231 #define MY_write_object_contents        NAME(aout,sparclynx_write_object_contents)
 232 #define MY_backend_data                 &sparclynx_aout_backend
 233
 234 #define TARGET_IS_BIG_ENDIAN_P
 235
 236 #ifdef LYNX_CORE
 237
 238 char * lynx_core_file_failing_command ();
 239 int lynx_core_file_failing_signal ();
 240 bfd_boolean lynx_core_file_matches_executable_p ();
 241 const bfd_target * lynx_core_file_p ();
 242
 243 #define MY_core_file_failing_command lynx_core_file_failing_command
 244 #define MY_core_file_failing_signal lynx_core_file_failing_signal
 245 #define MY_core_file_matches_executable_p lynx_core_file_matches_executable_p
 246 #define MY_core_file_p lynx_core_file_p
 247
 248 #endif /* LYNX_CORE */
 249
 250 #include "aout-target.h"