bfd/sparclynx.c

   1 /* BFD support for Sparc binaries under LynxOS.
   2    Copyright (C) 1990-2017 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 3 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., 51 Franklin Street - Fifth Floor, Boston,
  19    MA 02110-1301, USA.  */
  20
  21
  22 /* Do not "beautify" the CONCAT* macro args.  Traditional C will not
  23    remove whitespace added here, and thus will fail to concatenate
  24    the tokens.  */
  25 #define MY(OP) CONCAT2 (sparc_aout_lynx_,OP)
  26 #define TARGETNAME "a.out-sparc-lynx"
  27
  28 #include "sysdep.h"
  29 #include "bfd.h"
  30 #include "libbfd.h"
  31
  32 #include "aout/sun4.h"
  33 #include "libaout.h"            /* BFD a.out internal data structures */
  34
  35 #include "aout/aout64.h"
  36 #include "aout/stab_gnu.h"
  37 #include "aout/ar.h"
  38
  39 void NAME (lynx,set_arch_mach) (bfd *, unsigned long);
  40 static void choose_reloc_size (bfd *);
  41 static bfd_boolean NAME (aout,sparclynx_write_object_contents) (bfd *);
  42
  43 /* This is needed to reject a NewsOS file, e.g. in
  44    gdb/testsuite/gdb.t10/crossload.exp. <kingdon@cygnus.com>
  45    I needed to add M_UNKNOWN to recognize a 68000 object, so this will
  46    probably no longer reject a NewsOS object.  <ian@cygnus.com>.  */
  47 #define MACHTYPE_OK(mtype) (   (mtype) == M_UNKNOWN \
  48                             || (mtype) == M_68010 \
  49                             || (mtype) == M_68020 \
  50                             || (mtype) == M_SPARC)
  51
  52 /* The file @code{aoutf1.h} contains the code for BFD's
  53    a.out back end. Control over the generated back end is given by these
  54    two preprocessor names:
  55    @table @code
  56    @item ARCH_SIZE
  57    This value should be either 32 or 64, depending upon the size of an
  58    int in the target format. It changes the sizes of the structs which
  59    perform the memory/disk mapping of structures.
  60
  61    The 64 bit backend may only be used if the host compiler supports 64
  62    ints (eg long long with gcc), by defining the name @code{BFD_HOST_64_BIT} in @code{bfd.h}.
  63    With this name defined, @emph{all} bfd operations are performed with 64bit
  64    arithmetic, not just those to a 64bit target.
  65
  66    @item TARGETNAME
  67    The name put into the target vector.
  68    @item
  69    @end table  */
  70
  71 void
  72 NAME(lynx,set_arch_mach) (bfd *abfd, unsigned long machtype)
  73 {
  74   /* Determine the architecture and machine type of the object file.  */
  75   enum bfd_architecture arch;
  76   unsigned long machine;
  77
  78   switch (machtype)
  79     {
  80     case M_UNKNOWN:
  81       /* Some Sun3s make magic numbers without cpu types in them, so
  82          we'll default to the 68000.  */
  83       arch = bfd_arch_m68k;
  84       machine = bfd_mach_m68000;
  85       break;
  86
  87     case M_68010:
  88     case M_HP200:
  89       arch = bfd_arch_m68k;
  90       machine = bfd_mach_m68010;
  91       break;
  92
  93     case M_68020:
  94     case M_HP300:
  95       arch = bfd_arch_m68k;
  96       machine = bfd_mach_m68020;
  97       break;
  98
  99     case M_SPARC:
 100       arch = bfd_arch_sparc;
 101       machine = 0;
 102       break;
 103
 104     case M_386:
 105     case M_386_DYNIX:
 106       arch = bfd_arch_i386;
 107       machine = 0;
 108       break;
 109
 110     case M_HPUX:
 111       arch = bfd_arch_m68k;
 112       machine = 0;
 113       break;
 114
 115     default:
 116       arch = bfd_arch_obscure;
 117       machine = 0;
 118       break;
 119     }
 120   bfd_set_arch_mach (abfd, arch, machine);
 121 }
 122
 123 #define SET_ARCH_MACH(ABFD, EXECP) \
 124   NAME(lynx,set_arch_mach) (ABFD, N_MACHTYPE (EXECP)); \
 125   choose_reloc_size(ABFD);
 126
 127 /* Determine the size of a relocation entry, based on the architecture.  */
 128
 129 static void
 130 choose_reloc_size (bfd *abfd)
 131 {
 132   switch (bfd_get_arch (abfd))
 133     {
 134     case bfd_arch_sparc:
 135       obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE;
 136       break;
 137     default:
 138       obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
 139       break;
 140     }
 141 }
 142
 143 /* Write an object file in LynxOS format.
 144   Section contents have already been written.  We write the
 145   file header, symbols, and relocation.  */
 146
 147 static bfd_boolean
 148 NAME(aout,sparclynx_write_object_contents) (bfd *abfd)
 149 {
 150   struct external_exec exec_bytes;
 151   struct internal_exec *execp = exec_hdr (abfd);
 152
 153   /* Magic number, maestro, please!  */
 154   switch (bfd_get_arch (abfd))
 155     {
 156     case bfd_arch_m68k:
 157       switch (bfd_get_mach (abfd))
 158         {
 159         case bfd_mach_m68010:
 160           N_SET_MACHTYPE (execp, M_68010);
 161           break;
 162         default:
 163         case bfd_mach_m68020:
 164           N_SET_MACHTYPE (execp, M_68020);
 165           break;
 166         }
 167       break;
 168     case bfd_arch_sparc:
 169       N_SET_MACHTYPE (execp, M_SPARC);
 170       break;
 171     case bfd_arch_i386:
 172       N_SET_MACHTYPE (execp, M_386);
 173       break;
 174     default:
 175       N_SET_MACHTYPE (execp, M_UNKNOWN);
 176     }
 177
 178   choose_reloc_size (abfd);
 179
 180   N_SET_FLAGS (execp, aout_backend_info (abfd)->exec_hdr_flags);
 181
 182   WRITE_HEADERS (abfd, execp);
 183
 184   return TRUE;
 185 }
 186
 187 #define MY_set_sizes sparclynx_set_sizes
 188 static bfd_boolean sparclynx_set_sizes (bfd *);
 189
 190 static bfd_boolean
 191 sparclynx_set_sizes (bfd *abfd)
 192 {
 193   switch (bfd_get_arch (abfd))
 194     {
 195     default:
 196       return FALSE;
 197     case bfd_arch_sparc:
 198       adata (abfd).page_size = 0x2000;
 199       adata (abfd).segment_size = 0x2000;
 200       adata (abfd).exec_bytes_size = EXEC_BYTES_SIZE;
 201       return TRUE;
 202     case bfd_arch_m68k:
 203       adata (abfd).page_size = 0x2000;
 204       adata (abfd).segment_size = 0x20000;
 205       adata (abfd).exec_bytes_size = EXEC_BYTES_SIZE;
 206       return TRUE;
 207     }
 208 }
 209
 210 static const struct aout_backend_data sparclynx_aout_backend =
 211   {
 212     0, 1, 0, 1, 0, sparclynx_set_sizes, 0,
 213     0,                          /* add_dynamic_symbols */
 214     0,                          /* add_one_symbol */
 215     0,                          /* link_dynamic_object */
 216     0,                          /* write_dynamic_symbol */
 217     0,                          /* check_dynamic_reloc */
 218     0                           /* finish_dynamic_link */
 219   };
 220 \f
 221
 222 #define MY_bfd_debug_info_start         bfd_void
 223 #define MY_bfd_debug_info_end           bfd_void
 224 #define MY_bfd_debug_info_accumulate    \
 225                 (void (*) (bfd *, struct bfd_section *)) bfd_void
 226
 227 #define MY_write_object_contents        NAME(aout,sparclynx_write_object_contents)
 228 #define MY_backend_data                 &sparclynx_aout_backend
 229
 230 #define TARGET_IS_BIG_ENDIAN_P
 231
 232 #ifdef LYNX_CORE
 233
 234 char * lynx_core_file_failing_command ();
 235 int lynx_core_file_failing_signal ();
 236 bfd_boolean lynx_core_file_matches_executable_p ();
 237 const bfd_target * lynx_core_file_p ();
 238
 239 #define MY_core_file_failing_command lynx_core_file_failing_command
 240 #define MY_core_file_failing_signal lynx_core_file_failing_signal
 241 #define MY_core_file_matches_executable_p lynx_core_file_matches_executable_p
 242 #define MY_core_file_p lynx_core_file_p
 243
 244 #endif /* LYNX_CORE */
 245
 246 #include "aout-target.h"