bfd/sparclynx.c

   1 /* BFD support for Sparc binaries under LynxOS.
   2    Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1997, 1998, 2000
   3    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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  20
  21 #if 0
  22 #define BYTES_IN_WORD 4
  23 #define N_SHARED_LIB(x) 0
  24
  25 #define TEXT_START_ADDR 0
  26 #define TARGET_PAGE_SIZE 4096
  27 #define SEGMENT_SIZE TARGET_PAGE_SIZE
  28 #define DEFAULT_ARCH bfd_arch_sparc
  29
  30 #endif
  31
  32 #define MY(OP) CAT(sparclynx_aout_,OP)
  33 #define TARGETNAME "a.out-sparc-lynx"
  34
  35 #include "bfd.h"
  36 #include "sysdep.h"
  37 #include "libbfd.h"
  38
  39 #include "aout/sun4.h"
  40 #include "libaout.h"            /* BFD a.out internal data structures */
  41
  42 #include "aout/aout64.h"
  43 #include "aout/stab_gnu.h"
  44 #include "aout/ar.h"
  45
  46 /* This is needed to reject a NewsOS file, e.g. in
  47    gdb/testsuite/gdb.t10/crossload.exp. <kingdon@cygnus.com>
  48    I needed to add M_UNKNOWN to recognize a 68000 object, so this will
  49    probably no longer reject a NewsOS object.  <ian@cygnus.com>.  */
  50 #define MACHTYPE_OK(mtype) ((mtype) == M_UNKNOWN \
  51                             || (mtype) == M_68010 \
  52                             || (mtype) == M_68020 \
  53                             || (mtype) == M_SPARC)
  54
  55 /*
  56 The file @code{aoutf1.h} contains the code for BFD's
  57 a.out back end. Control over the generated back end is given by these
  58 two preprocessor names:
  59 @table @code
  60 @item ARCH_SIZE
  61 This value should be either 32 or 64, depending upon the size of an
  62 int in the target format. It changes the sizes of the structs which
  63 perform the memory/disk mapping of structures.
  64
  65 The 64 bit backend may only be used if the host compiler supports 64
  66 ints (eg long long with gcc), by defining the name @code{BFD_HOST_64_BIT} in @code{bfd.h}.
  67 With this name defined, @emph{all} bfd operations are performed with 64bit
  68 arithmetic, not just those to a 64bit target.
  69
  70 @item TARGETNAME
  71 The name put into the target vector.
  72 @item
  73 @end table
  74
  75 */
  76
  77 /*SUPPRESS558*/
  78 /*SUPPRESS529*/
  79
  80 void
  81 NAME(lynx,set_arch_mach) (abfd, machtype)
  82      bfd *abfd;
  83      int machtype;
  84 {
  85   /* Determine the architecture and machine type of the object file.  */
  86   enum bfd_architecture arch;
  87   long machine;
  88   switch (machtype)
  89     {
  90
  91     case M_UNKNOWN:
  92       /* Some Sun3s make magic numbers without cpu types in them, so
  93          we'll default to the 68000.  */
  94       arch = bfd_arch_m68k;
  95       machine = bfd_mach_m68000;
  96       break;
  97
  98     case M_68010:
  99     case M_HP200:
 100       arch = bfd_arch_m68k;
 101       machine = bfd_mach_m68010;
 102       break;
 103
 104     case M_68020:
 105     case M_HP300:
 106       arch = bfd_arch_m68k;
 107       machine = bfd_mach_m68020;
 108       break;
 109
 110     case M_SPARC:
 111       arch = bfd_arch_sparc;
 112       machine = 0;
 113       break;
 114
 115     case M_386:
 116     case M_386_DYNIX:
 117       arch = bfd_arch_i386;
 118       machine = 0;
 119       break;
 120
 121     case M_29K:
 122       arch = bfd_arch_a29k;
 123       machine = 0;
 124       break;
 125
 126     case M_HPUX:
 127       arch = bfd_arch_m68k;
 128       machine = 0;
 129       break;
 130
 131     default:
 132       arch = bfd_arch_obscure;
 133       machine = 0;
 134       break;
 135     }
 136   bfd_set_arch_mach (abfd, arch, machine);
 137 }
 138
 139 #define SET_ARCH_MACH(ABFD, EXEC) \
 140   NAME(lynx,set_arch_mach) (ABFD, N_MACHTYPE (EXEC)); \
 141   choose_reloc_size(ABFD);
 142
 143 /* Determine the size of a relocation entry, based on the architecture */
 144 static void
 145 choose_reloc_size (abfd)
 146      bfd *abfd;
 147 {
 148   switch (bfd_get_arch (abfd))
 149     {
 150     case bfd_arch_sparc:
 151     case bfd_arch_a29k:
 152       obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE;
 153       break;
 154     default:
 155       obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
 156       break;
 157     }
 158 }
 159
 160 /* Write an object file in LynxOS format.
 161   Section contents have already been written.  We write the
 162   file header, symbols, and relocation.  */
 163
 164 static boolean
 165 NAME(aout,sparclynx_write_object_contents) (abfd)
 166      bfd *abfd;
 167 {
 168   struct external_exec exec_bytes;
 169   struct internal_exec *execp = exec_hdr (abfd);
 170
 171   /* Magic number, maestro, please!  */
 172   switch (bfd_get_arch (abfd))
 173     {
 174     case bfd_arch_m68k:
 175       switch (bfd_get_mach (abfd))
 176         {
 177         case bfd_mach_m68010:
 178           N_SET_MACHTYPE (*execp, M_68010);
 179           break;
 180         default:
 181         case bfd_mach_m68020:
 182           N_SET_MACHTYPE (*execp, M_68020);
 183           break;
 184         }
 185       break;
 186     case bfd_arch_sparc:
 187       N_SET_MACHTYPE (*execp, M_SPARC);
 188       break;
 189     case bfd_arch_i386:
 190       N_SET_MACHTYPE (*execp, M_386);
 191       break;
 192     case bfd_arch_a29k:
 193       N_SET_MACHTYPE (*execp, M_29K);
 194       break;
 195     default:
 196       N_SET_MACHTYPE (*execp, M_UNKNOWN);
 197     }
 198
 199   choose_reloc_size (abfd);
 200
 201   N_SET_FLAGS (*execp, aout_backend_info (abfd)->exec_hdr_flags);
 202
 203   WRITE_HEADERS (abfd, execp);
 204
 205   return true;
 206 }
 207
 208 #define MY_set_sizes sparclynx_set_sizes
 209 static boolean
 210 sparclynx_set_sizes (abfd)
 211      bfd *abfd;
 212 {
 213   switch (bfd_get_arch (abfd))
 214     {
 215     default:
 216       return false;
 217     case bfd_arch_sparc:
 218       adata (abfd).page_size = 0x2000;
 219       adata (abfd).segment_size = 0x2000;
 220       adata (abfd).exec_bytes_size = EXEC_BYTES_SIZE;
 221       return true;
 222     case bfd_arch_m68k:
 223       adata (abfd).page_size = 0x2000;
 224       adata (abfd).segment_size = 0x20000;
 225       adata (abfd).exec_bytes_size = EXEC_BYTES_SIZE;
 226       return true;
 227     }
 228 }
 229
 230 static CONST struct aout_backend_data sparclynx_aout_backend =
 231 {
 232   0, 1, 0, 1, 0, sparclynx_set_sizes, 0,
 233   0,                            /* add_dynamic_symbols */
 234   0,                            /* add_one_symbol */
 235   0,                            /* link_dynamic_object */
 236   0,                            /* write_dynamic_symbol */
 237   0,                            /* check_dynamic_reloc */
 238   0                             /* finish_dynamic_link */
 239 };
 240 \f
 241
 242 #define MY_bfd_debug_info_start         bfd_void
 243 #define MY_bfd_debug_info_end           bfd_void
 244 #define MY_bfd_debug_info_accumulate    \
 245                         (void (*) PARAMS ((bfd *, struct sec *))) bfd_void
 246
 247 #define MY_write_object_contents        NAME(aout,sparclynx_write_object_contents)
 248 #define MY_backend_data                 &sparclynx_aout_backend
 249
 250 #define TARGET_IS_BIG_ENDIAN_P
 251
 252 #ifdef LYNX_CORE
 253
 254 char *lynx_core_file_failing_command ();
 255 int lynx_core_file_failing_signal ();
 256 boolean lynx_core_file_matches_executable_p ();
 257 const bfd_target *lynx_core_file_p ();
 258
 259 #define MY_core_file_failing_command lynx_core_file_failing_command
 260 #define MY_core_file_failing_signal lynx_core_file_failing_signal
 261 #define MY_core_file_matches_executable_p lynx_core_file_matches_executable_p
 262 #define MY_core_file_p lynx_core_file_p
 263
 264 #endif /* LYNX_CORE */
 265
 266 #include "aout-target.h"