gdb/i386nbsd-nat.c

   1 /* Native-dependent code for NetBSD/i386, for GDB.
   2    Copyright 1988, 1989, 1991, 1992, 1994, 1996, 2000, 2001, 2002
   3    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., 59 Temple Place - Suite 330,
  20    Boston, MA 02111-1307, USA.  */
  21
  22 #include "defs.h"
  23 #include <sys/types.h>
  24 #include <sys/ptrace.h>
  25 #include <machine/reg.h>
  26 #include <machine/frame.h>
  27 #include "inferior.h"
  28 #include "gdbcore.h"
  29 #include "regcache.h"
  30
  31 #ifndef HAVE_GREGSET_T
  32 typedef struct reg gregset_t;
  33 #endif
  34
  35 #ifndef HAVE_FPREGSET_T
  36 typedef struct fpreg fpregset_t;
  37 #endif
  38
  39 #include "gregset.h"
  40
  41 /* Prototypes for i387_supply_fsave etc.  */
  42 #include "i387-nat.h"
  43
  44 struct md_core
  45 {
  46   struct reg intreg;
  47   char freg[108];
  48 };
  49
  50 static void
  51 fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, int which,
  52                       CORE_ADDR ignore)
  53 {
  54   struct md_core *core_reg = (struct md_core *) core_reg_sect;
  55
  56   /* We get everything from one section.  */
  57   if (which != 0)
  58     return;
  59
  60   /* Integer registers.  */
  61   supply_gregset (&core_reg->intreg);
  62
  63   /* Floating point registers.  */
  64   i387_supply_fsave (core_reg->freg);
  65 }
  66
  67 static void
  68 fetch_elfcore_registers (char *core_reg_sect, unsigned core_reg_size, int which,
  69                          CORE_ADDR ignore)
  70 {
  71   gregset_t gregset;
  72
  73   switch (which)
  74     {
  75     case 0:  /* Integer registers.  */
  76       if (core_reg_size != sizeof (struct reg))
  77         warning ("Wrong size register set in core file.");
  78       else
  79         {
  80           memcpy (&gregset, core_reg_sect, sizeof (gregset));
  81           supply_gregset (&gregset);
  82         }
  83       break;
  84
  85     case 2:  /* Floating point registers.  */
  86       if (core_reg_size != 108)
  87         warning ("Wrong size FP register set in core file.");
  88       else
  89         i387_supply_fsave (core_reg_sect);
  90       break;
  91
  92     case 3:  /* "Extended" floating point registers.  This is gdb-speak
  93                 for SSE/SSE2. */
  94       if (core_reg_size != 512)
  95         warning ("Wrong size XMM register set in core file.");
  96       else
  97         i387_supply_fxsave (core_reg_sect);
  98       break;
  99
 100     default:
 101       /* Don't know what kind of register request this is; just ignore it.  */
 102       break;
 103     }
 104 }
 105
 106 /* Register that we are able to handle i386nbsd core file formats.
 107    FIXME: is this really bfd_target_unknown_flavour? */
 108
 109 static struct core_fns i386nbsd_core_fns =
 110 {
 111   bfd_target_unknown_flavour,           /* core_flavour */
 112   default_check_format,                 /* check_format */
 113   default_core_sniffer,                 /* core_sniffer */
 114   fetch_core_registers,                 /* core_read_registers */
 115   NULL                                  /* next */
 116 };
 117
 118 static struct core_fns i386nbsd_elfcore_fns =
 119 {
 120   bfd_target_elf_flavour,               /* core_flavour */
 121   default_check_format,                 /* check_format */
 122   default_core_sniffer,                 /* core_sniffer */
 123   fetch_elfcore_registers,              /* core_read_registers */
 124   NULL                                  /* next */
 125 };
 126
 127 void
 128 _initialize_i386nbsd_nat (void)
 129 {
 130   add_core_fns (&i386nbsd_core_fns);
 131   add_core_fns (&i386nbsd_elfcore_fns);
 132 }