gdb/i386-cygwin-tdep.c

   1 /* Target-dependent code for Cygwin running on i386's, for GDB.
   2
   3    Copyright (C) 2003, 2007 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   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., 51 Franklin Street, Fifth Floor,
  20    Boston, MA 02110-1301, USA.  */
  21
  22 #include "defs.h"
  23 #include "osabi.h"
  24
  25 #include "gdb_string.h"
  26
  27 #include "i386-tdep.h"
  28
  29 static CORE_ADDR
  30 i386_cygwin_skip_trampoline_code (CORE_ADDR pc)
  31 {
  32   return i386_pe_skip_trampoline_code (pc, NULL);
  33 }
  34
  35 static void
  36 i386_cygwin_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
  37 {
  38   struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
  39
  40   set_gdbarch_skip_trampoline_code (gdbarch, i386_cygwin_skip_trampoline_code);
  41
  42   tdep->struct_return = reg_struct_return;
  43 }
  44
  45 static enum gdb_osabi
  46 i386_cygwin_osabi_sniffer (bfd * abfd)
  47 {
  48   char *target_name = bfd_get_target (abfd);
  49
  50   /* Interix also uses pei-i386.
  51      We need a way to distinguish between the two. */
  52   if (strcmp (target_name, "pei-i386") == 0)
  53     return GDB_OSABI_CYGWIN;
  54
  55   return GDB_OSABI_UNKNOWN;
  56 }
  57
  58 /* Provide a prototype to silence -Wmissing-prototypes.  */
  59 void _initialize_i386_cygwin_tdep (void);
  60
  61 void
  62 _initialize_i386_cygwin_tdep (void)
  63 {
  64   gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_coff_flavour,
  65                                   i386_cygwin_osabi_sniffer);
  66
  67   gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_CYGWIN,
  68                           i386_cygwin_init_abi);
  69 }