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, 2007, 2012 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 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
  23 /* Do not "beautify" the CONCAT* macro args.  Traditional C will not
  24    remove whitespace added here, and thus will fail to concatenate
  25    the tokens.  */
  26 #define MY(OP) CONCAT2 (sparclynx_aout_,OP)
  27 #define TARGETNAME "a.out-sparc-lynx"
  28
  29 #include "sysdep.h"
  30 #include "bfd.h"
  31 #include "libbfd.h"
  32
  33 #include "aout/sun4.h"
  34 #include "libaout.h"            /* BFD a.out internal data structures */
  35
  36 #include "aout/aout64.h"
  37 #include "aout/stab_gnu.h"
  38 #include "aout/ar.h"
  39
  40 void NAME (lynx,set_arch_mach) (bfd *, unsigned long);
  41 static void choose_reloc_size (bfd *);
  42 static bfd_boolean NAME (aout,sparclynx_write_object_contents) (bfd *);
  43
  44 /* This is needed to reject a NewsOS file, e.g. in
  45    gdb/testsuite/gdb.t10/crossload.exp. <kingdon@cygnus.com>
  46    I needed to add M_UNKNOWN to recognize a 68000 object, so this will
  47    probably no longer reject a NewsOS object.  <ian@cygnus.com>.  */
  48 #define MACHTYPE_OK(mtype) (   (mtype) == M_UNKNOWN \
  49                             || (mtype) == M_68010 \
  50                             || (mtype) == M_68020 \
  51                             || (mtype) == M_SPARC)
  52
  53 /* The file @code{aoutf1.h} contains the code for BFD's
  54    a.out back end. Control over the generated back end is given by these
  55    two preprocessor names:
  56    @table @code
  57    @item ARCH_SIZE
  58    This value should be either 32 or 64, depending upon the size of an
  59    int in the target format. It changes the sizes of the structs which
  60    perform the memory/disk mapping of structures.
  61
  62    The 64 bit backend may only be used if the host compiler supports 64
  63    ints (eg long long with gcc), by defining the name @code{BFD_HOST_64_BIT} in @code{bfd.h}.
  64    With this name defined, @emph{all} bfd operations are performed with 64bit
  65    arithmetic, not just those to a 64bit target.
  66
  67    @item TARGETNAME
  68    The name put into the target vector.
  69    @item
  70    @end table  */
  71
  72 void
  73 NAME(lynx,set_arch_mach) (bfd *abfd, 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 (bfd *abfd)
 132 {
 133   switch (bfd_get_arch (abfd))
 134     {
 135     case bfd_arch_sparc:
 136       obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE;
 137       break;
 138     default:
 139       obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
 140       break;
 141     }
 142 }
 143
 144 /* Write an object file in LynxOS format.
 145   Section contents have already been written.  We write the
 146   file header, symbols, and relocation.  */
 147
 148 static bfd_boolean
 149 NAME(aout,sparclynx_write_object_contents) (bfd *abfd)
 150 {
 151   struct external_exec exec_bytes;
 152   struct internal_exec *execp = exec_hdr (abfd);
 153
 154   /* Magic number, maestro, please!  */
 155   switch (bfd_get_arch (abfd))
 156     {
 157     case bfd_arch_m68k:
 158       switch (bfd_get_mach (abfd))
 159         {
 160         case bfd_mach_m68010:
 161           N_SET_MACHTYPE (*execp, M_68010);
 162           break;
 163         default:
 164         case bfd_mach_m68020:
 165           N_SET_MACHTYPE (*execp, M_68020);
 166           break;
 167         }
 168       break;
 169     case bfd_arch_sparc:
 170       N_SET_MACHTYPE (*execp, M_SPARC);
 171       break;
 172     case bfd_arch_i386:
 173       N_SET_MACHTYPE (*execp, M_386);
 174       break;
 175     default:
 176       N_SET_MACHTYPE (*execp, M_UNKNOWN);
 177     }
 178
 179   choose_reloc_size (abfd);
 180
 181   N_SET_FLAGS (*execp, aout_backend_info (abfd)->exec_hdr_flags);
 182
 183   WRITE_HEADERS (abfd, execp);
 184
 185   return TRUE;
 186 }
 187
 188 #define MY_set_sizes sparclynx_set_sizes
 189 static bfd_boolean sparclynx_set_sizes (bfd *);
 190
 191 static bfd_boolean
 192 sparclynx_set_sizes (bfd *abfd)
 193 {
 194   switch (bfd_get_arch (abfd))
 195     {
 196     default:
 197       return FALSE;
 198     case bfd_arch_sparc:
 199       adata (abfd).page_size = 0x2000;
 200       adata (abfd).segment_size = 0x2000;
 201       adata (abfd).exec_bytes_size = EXEC_BYTES_SIZE;
 202       return TRUE;
 203     case bfd_arch_m68k:
 204       adata (abfd).page_size = 0x2000;
 205       adata (abfd).segment_size = 0x20000;
 206       adata (abfd).exec_bytes_size = EXEC_BYTES_SIZE;
 207       return TRUE;
 208     }
 209 }
 210
 211 static const struct aout_backend_data sparclynx_aout_backend =
 212   {
 213     0, 1, 0, 1, 0, sparclynx_set_sizes, 0,
 214     0,                          /* add_dynamic_symbols */
 215     0,                          /* add_one_symbol */
 216     0,                          /* link_dynamic_object */
 217     0,                          /* write_dynamic_symbol */
 218     0,                          /* check_dynamic_reloc */
 219     0                           /* finish_dynamic_link */
 220   };
 221 \f
 222
 223 #define MY_bfd_debug_info_start         bfd_void
 224 #define MY_bfd_debug_info_end           bfd_void
 225 #define MY_bfd_debug_info_accumulate    \
 226                 (void (*) (bfd *, struct bfd_section *)) bfd_void
 227
 228 #define MY_write_object_contents        NAME(aout,sparclynx_write_object_contents)
 229 #define MY_backend_data                 &sparclynx_aout_backend
 230
 231 #define TARGET_IS_BIG_ENDIAN_P
 232
 233 #ifdef LYNX_CORE
 234
 235 char * lynx_core_file_failing_command ();
 236 int lynx_core_file_failing_signal ();
 237 bfd_boolean lynx_core_file_matches_executable_p ();
 238 const bfd_target * lynx_core_file_p ();
 239
 240 #define MY_core_file_failing_command lynx_core_file_failing_command
 241 #define MY_core_file_failing_signal lynx_core_file_failing_signal
 242 #define MY_core_file_matches_executable_p lynx_core_file_matches_executable_p
 243 #define MY_core_file_p lynx_core_file_p
 244
 245 #endif /* LYNX_CORE */
 246
 247 #include "aout-target.h"