gdb/shnbsd-tdep.c

   1 /* Target-dependent code for NetBSD/sh.
   2
   3    Copyright (C) 2002-2015 Free Software Foundation, Inc.
   4
   5    Contributed by Wasabi Systems, Inc.
   6
   7    This file is part of GDB.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  21
  22 #include "defs.h"
  23 #include "gdbcore.h"
  24 #include "regset.h"
  25 #include "value.h"
  26 #include "osabi.h"
  27
  28 #include "sh-tdep.h"
  29 #include "solib-svr4.h"
  30
  31 /* Convert a register number into an offset into a ptrace
  32    register structure.  */
  33 static const struct sh_corefile_regmap regmap[] =
  34 {
  35   {R0_REGNUM,      20 * 4},
  36   {R0_REGNUM + 1,  19 * 4},
  37   {R0_REGNUM + 2,  18 * 4},
  38   {R0_REGNUM + 3,  17 * 4},
  39   {R0_REGNUM + 4,  16 * 4},
  40   {R0_REGNUM + 5,  15 * 4},
  41   {R0_REGNUM + 6,  14 * 4},
  42   {R0_REGNUM + 7,  13 * 4},
  43   {R0_REGNUM + 8,  12 * 4},
  44   {R0_REGNUM + 9,  11 * 4},
  45   {R0_REGNUM + 10, 10 * 4},
  46   {R0_REGNUM + 11,  9 * 4},
  47   {R0_REGNUM + 12,  8 * 4},
  48   {R0_REGNUM + 13,  7 * 4},
  49   {R0_REGNUM + 14,  6 * 4},
  50   {R0_REGNUM + 15,  5 * 4},
  51   {PC_REGNUM,       0 * 4},
  52   {SR_REGNUM,       1 * 4},
  53   {PR_REGNUM,       2 * 4},
  54   {MACH_REGNUM,     3 * 4},
  55   {MACL_REGNUM,     4 * 4},
  56   {-1 /* Terminator.  */, 0}
  57 };
  58 \f
  59
  60 static void
  61 shnbsd_init_abi (struct gdbarch_info info,
  62                   struct gdbarch *gdbarch)
  63 {
  64   struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
  65
  66   tdep->core_gregmap = (struct sh_corefile_regmap *)regmap;
  67   tdep->sizeof_gregset = 84;
  68
  69   set_solib_svr4_fetch_link_map_offsets
  70     (gdbarch, svr4_ilp32_fetch_link_map_offsets);
  71 }
  72 \f
  73
  74 /* OpenBSD uses uses the traditional NetBSD core file format, even for
  75    ports that use ELF.  */
  76 #define GDB_OSABI_NETBSD_CORE GDB_OSABI_OPENBSD_ELF
  77
  78 static enum gdb_osabi
  79 shnbsd_core_osabi_sniffer (bfd *abfd)
  80 {
  81   if (strcmp (bfd_get_target (abfd), "netbsd-core") == 0)
  82     return GDB_OSABI_NETBSD_CORE;
  83
  84   return GDB_OSABI_UNKNOWN;
  85 }
  86
  87 /* Provide a prototype to silence -Wmissing-prototypes.  */
  88 extern initialize_file_ftype _initialize_shnbsd_tdep;
  89
  90 void
  91 _initialize_shnbsd_tdep (void)
  92 {
  93   /* BFD doesn't set a flavour for NetBSD style a.out core files.  */
  94   gdbarch_register_osabi_sniffer (bfd_arch_sh, bfd_target_unknown_flavour,
  95                                   shnbsd_core_osabi_sniffer);
  96
  97   gdbarch_register_osabi (bfd_arch_sh, 0, GDB_OSABI_NETBSD_ELF,
  98                           shnbsd_init_abi);
  99   gdbarch_register_osabi (bfd_arch_sh, 0, GDB_OSABI_OPENBSD_ELF,
 100                           shnbsd_init_abi);
 101 }