bfd/sparclynx.c

   1 /* BFD support for Sparc binaries under LynxOS.
   2    Copyright (C) 1990, 1991, 1992, 1993 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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  19
  20 #define ARCH 32
  21
  22 #if 0
  23 #define BYTES_IN_WORD 4
  24 #define N_SHARED_LIB(x) 0
  25
  26 #define TEXT_START_ADDR 0
  27 #define PAGE_SIZE 4096
  28 #define SEGMENT_SIZE PAGE_SIZE
  29 #define DEFAULT_ARCH bfd_arch_sparc
  30
  31 #endif
  32
  33 #define MY(OP) CAT(sparclynx_aout_,OP)
  34 #define TARGETNAME "a.out-sparc-lynx"
  35
  36 #include "bfd.h"
  37 #include "sysdep.h"
  38 #include "libbfd.h"
  39
  40 #include "aout/sun4.h"
  41 #include "libaout.h"           /* BFD a.out internal data structures */
  42
  43 #include "aout/aout64.h"
  44 #include "aout/stab_gnu.h"
  45 #include "aout/ar.h"
  46
  47 /* This is needed to reject a NewsOS file, e.g. in
  48    gdb/testsuite/gdb.t10/crossload.exp. <kingdon@cygnus.com>
  49    I needed to add M_UNKNOWN to recognize a 68000 object, so this will
  50    probably no longer reject a NewsOS object.  <ian@cygnus.com>. */
  51 #define MACHTYPE_OK(mtype) ((mtype) == M_UNKNOWN \
  52                             || (mtype) == M_68010 \
  53                             || (mtype) == M_68020 \
  54                             || (mtype) == M_SPARC)
  55
  56 /*
  57 The file @code{aoutf1.h} contains the code for BFD's
  58 a.out back end. Control over the generated back end is given by these
  59 two preprocessor names:
  60 @table @code
  61 @item ARCH_SIZE
  62 This value should be either 32 or 64, depending upon the size of an
  63 int in the target format. It changes the sizes of the structs which
  64 perform the memory/disk mapping of structures.
  65
  66 The 64 bit backend may only be used if the host compiler supports 64
  67 ints (eg long long with gcc), by defining the name @code{HOST_64_BIT} in @code{bfd.h}.
  68 With this name defined, @emph{all} bfd operations are performed with 64bit
  69 arithmetic, not just those to a 64bit target.
  70
  71 @item TARGETNAME
  72 The name put into the target vector.
  73 @item
  74 @end table
  75
  76 */
  77
  78 /*SUPPRESS558*/
  79 /*SUPPRESS529*/
  80
  81 void
  82 DEFUN(NAME(lynxos,set_arch_mach), (abfd, machtype),
  83       bfd *abfd AND 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   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 = 68000;
  95     break;
  96
  97   case M_68010:
  98   case M_HP200:
  99     arch = bfd_arch_m68k;
 100     machine = 68010;
 101     break;
 102
 103   case M_68020:
 104   case M_HP300:
 105     arch = bfd_arch_m68k;
 106     machine = 68020;
 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(lynxos,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 DEFUN(choose_reloc_size,(abfd),
 145 bfd *abfd)
 146 {
 147   switch (bfd_get_arch(abfd)) {
 148   case bfd_arch_sparc:
 149   case bfd_arch_a29k:
 150     obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE;
 151     break;
 152   default:
 153     obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
 154     break;
 155   }
 156 }
 157
 158 /* Write an object file in Lynxos format.
 159   Section contents have already been written.  We write the
 160   file header, symbols, and relocation.  */
 161
 162 static boolean
 163 DEFUN(NAME(aout,sparclynx_write_object_contents),
 164       (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   case bfd_arch_m68k:
 173     switch (bfd_get_mach(abfd)) {
 174     case 68010:
 175       N_SET_MACHTYPE(*execp, M_68010);
 176       break;
 177     default:
 178     case 68020:
 179       N_SET_MACHTYPE(*execp, M_68020);
 180       break;
 181     }
 182     break;
 183   case bfd_arch_sparc:
 184     N_SET_MACHTYPE(*execp, M_SPARC);
 185     break;
 186   case bfd_arch_i386:
 187     N_SET_MACHTYPE(*execp, M_386);
 188     break;
 189   case bfd_arch_a29k:
 190     N_SET_MACHTYPE(*execp, M_29K);
 191     break;
 192   default:
 193     N_SET_MACHTYPE(*execp, M_UNKNOWN);
 194   }
 195
 196   choose_reloc_size(abfd);
 197
 198 #if 0
 199   /* Some tools want this to be 0, some tools want this to be one.
 200      Today, it seems that 0 is the most important setting (PR1927) */
 201   N_SET_FLAGS (*execp, 0x0);
 202 #else
 203
 204   /* Fri Jun 11 14:23:31 PDT 1993
 205      FIXME
 206      Today's optimal setting is 1.  This is a pain, since it
 207      reopens 1927.  This should be readdressed by creating a new
 208      target for each each supported, giving perhaps sun3/m68k
 209      and sun4/sparc a.out formats.
 210      */
 211   N_SET_FLAGS (*execp, 1);
 212 #endif
 213
 214   WRITE_HEADERS(abfd, execp);
 215
 216   return true;
 217 }
 218
 219 #define MY_set_sizes sparclynx_set_sizes
 220 static boolean
 221 DEFUN (sparclynx_set_sizes, (abfd),
 222        bfd *abfd)
 223 {
 224   switch (bfd_get_arch (abfd))
 225     {
 226     default:
 227       return false;
 228     case bfd_arch_sparc:
 229       adata(abfd).page_size = 0x2000;
 230       adata(abfd).segment_size = 0x2000;
 231       adata(abfd).exec_bytes_size = EXEC_BYTES_SIZE;
 232       return true;
 233     case bfd_arch_m68k:
 234       adata(abfd).page_size = 0x2000;
 235       adata(abfd).segment_size = 0x20000;
 236       adata(abfd).exec_bytes_size = EXEC_BYTES_SIZE;
 237       return true;
 238     }
 239 }
 240
 241 static CONST struct aout_backend_data sparclynx_aout_backend = {
 242   0, 1, 0, sparclynx_set_sizes, 0,
 243 };
 244 \f
 245
 246 #define MY_bfd_debug_info_start         bfd_void
 247 #define MY_bfd_debug_info_end           bfd_void
 248 #define MY_bfd_debug_info_accumulate    \
 249                         (void (*) PARAMS ((bfd *, struct sec *))) bfd_void
 250
 251 #define MY_write_object_contents        NAME(aout,sparclynx_write_object_contents)
 252 #define MY_backend_data                 &sparclynx_aout_backend
 253
 254 #define TARGET_IS_BIG_ENDIAN_P
 255
 256 #ifdef HOST_LYNX
 257
 258 char *lynx_core_file_failing_command();
 259 int lynx_core_file_failing_signal();
 260 boolean lynx_core_file_matches_executable_p();
 261 bfd_target *lynx_core_file_p();
 262
 263 #define MY_core_file_failing_command lynx_core_file_failing_command
 264 #define MY_core_file_failing_signal lynx_core_file_failing_signal
 265 #define MY_core_file_matches_executable_p lynx_core_file_matches_executable_p
 266 #define MY_core_file_p lynx_core_file_p
 267
 268 #endif /* HOST_LYNX */
 269
 270 #include "aout-target.h"