gdb/i386-sol2-tdep.c

   1 /* Target-dependent code for Solaris x86.
   2    Copyright 2002, 2003 Free Software Foundation, Inc.
   3
   4    This file is part of GDB.
   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., 59 Temple Place - Suite 330,
  19    Boston, MA 02111-1307, USA.  */
  20
  21 #include "defs.h"
  22 #include "value.h"
  23 #include "osabi.h"
  24
  25 #include "i386-tdep.h"
  26
  27 static int
  28 i386_sol2_pc_in_sigtramp (CORE_ADDR pc, char *name)
  29 {
  30   /* Signal handler frames under Solaris 2 are recognized by a return
  31      address of 0xffffffff.  */
  32   return (pc == 0xffffffff);
  33 }
  34
  35 /* Solaris 2.  */
  36
  37 static void
  38 i386_sol2_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
  39 {
  40   struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
  41
  42   /* Solaris is SVR4-based.  */
  43   i386_svr4_init_abi (info, gdbarch);
  44
  45   /* Signal trampolines are different from SVR4, in fact they're
  46      rather similar to BSD.  */
  47   set_gdbarch_pc_in_sigtramp (gdbarch, i386_sol2_pc_in_sigtramp);
  48   tdep->sigcontext_addr = i386bsd_sigcontext_addr;
  49   tdep->sc_pc_offset = 36 + 14 * 4;
  50   tdep->sc_sp_offset = 36 + 17 * 4;
  51 }
  52 \f
  53
  54 static enum gdb_osabi
  55 i386_sol2_osabi_sniffer (bfd *abfd)
  56 {
  57   /* If we have a section named .SUNW_version, then it is almost
  58      certainly Solaris 2.  */
  59   if (bfd_get_section_by_name (abfd, ".SUNW_version"))
  60     return GDB_OSABI_SOLARIS;
  61
  62   return GDB_OSABI_UNKNOWN;
  63 }
  64
  65 /* Provide a prototype to silence -Wmissing-prototypes.  */
  66 void _initialize_i386_sol2_tdep (void);
  67
  68 void
  69 _initialize_i386_sol2_tdep (void)
  70 {
  71   /* Register an ELF OS ABI sniffer for Solaris 2 binaries.  */
  72   gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_elf_flavour,
  73                                   i386_sol2_osabi_sniffer);
  74
  75   gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_SOLARIS,
  76                           i386_sol2_init_abi);
  77 }