gdb/alphanbsd-nat.c

   1 /* Native-dependent code for Alpha NetBSD.
   2    Copyright 2002 Free Software Foundation, Inc.
   3    Contributed by Wasabi Systems, 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 <machine/reg.h>
  25 #include <machine/frame.h>
  26 #include <machine/pcb.h>
  27 #include "gdbcore.h"
  28 #include "regcache.h"
  29
  30 #include "alpha-tdep.h"
  31
  32 #ifndef HAVE_GREGSET_T
  33 typedef struct reg gregset_t;
  34 #endif
  35
  36 #ifndef HAVE_FPREGSET_T
  37 typedef struct fpreg fpregset_t;
  38 #endif
  39
  40 #include "gregset.h"
  41
  42 static void
  43 fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, int which,
  44                       CORE_ADDR ignore)
  45 {
  46   struct md_coredump *core_reg;
  47   char *regs;
  48   int regno;
  49
  50   /* Table to map a gdb register number to a trapframe register index.  */
  51   static const int regmap[] =
  52   {
  53     FRAME_V0,  FRAME_T0,  FRAME_T1,  FRAME_T2,
  54     FRAME_T3,  FRAME_T4,  FRAME_T5,  FRAME_T6,
  55     FRAME_T7,  FRAME_S0,  FRAME_S1,  FRAME_S2,
  56     FRAME_S3,  FRAME_S4,  FRAME_S5,  FRAME_S6,
  57     FRAME_A0,  FRAME_A1,  FRAME_A2,  FRAME_A3,
  58     FRAME_A4,  FRAME_A5,  FRAME_T8,  FRAME_T9,
  59     FRAME_T10, FRAME_T11, FRAME_RA,  FRAME_T12,
  60     FRAME_AT,  FRAME_GP,  FRAME_SP
  61   };
  62
  63   /* We get everything from one section.  */
  64   if (which != 0)
  65     return;
  66
  67   core_reg = (struct md_coredump *) core_reg_sect;
  68   regs = (char *) &core_reg->md_tf;
  69
  70   if (core_reg_size < sizeof (*core_reg))
  71     {
  72       warning ("Wrong size register set in core file.");
  73       return;
  74     }
  75
  76   /* Integer registers.  */
  77   for (regno = 0; regno < ALPHA_ZERO_REGNUM; regno++)
  78     supply_register (regno, regs + (regmap[regno] * 8));
  79   supply_register (ALPHA_ZERO_REGNUM, NULL);
  80   supply_register (FP_REGNUM, NULL);
  81   supply_register (PC_REGNUM, regs + (FRAME_PC * 8));
  82
  83   /* Floating point registers.  */
  84   supply_fpregset (&core_reg->md_fpstate);
  85 }
  86
  87 static void
  88 fetch_elfcore_registers (char *core_reg_sect, unsigned core_reg_size, int which,
  89                          CORE_ADDR ignore)
  90 {
  91   switch (which)
  92     {
  93     case 0:  /* Integer registers.  */
  94       if (core_reg_size != sizeof (struct reg))
  95         warning ("Wrong size register set in core file.");
  96       else
  97         supply_gregset ((gregset_t *) core_reg_sect);
  98       break;
  99
 100     case 2:  /* Floating point registers.  */
 101       if (core_reg_size != sizeof (struct fpreg))
 102         warning ("Wrong size FP register set in core file.");
 103       else
 104         supply_fpregset ((fpregset_t *) core_reg_sect);
 105       break;
 106
 107     default:
 108       /* Don't know what kind of register request this is; just ignore it.  */
 109       break;
 110     }
 111 }
 112
 113 static struct core_fns alphanbsd_core_fns =
 114 {
 115   bfd_target_unknown_flavour,           /* core_flavour */
 116   default_check_format,                 /* check_format */
 117   default_core_sniffer,                 /* core_sniffer */
 118   fetch_core_registers,                 /* core_read_registers */
 119   NULL                                  /* next */
 120 };
 121
 122 static struct core_fns alphanbsd_elfcore_fns =
 123 {
 124   bfd_target_elf_flavour,               /* core_flavour */
 125   default_check_format,                 /* check_format */
 126   default_core_sniffer,                 /* core_sniffer */
 127   fetch_elfcore_registers,              /* core_read_registers */
 128   NULL                                  /* next */
 129 };
 130
 131 void
 132 _initialize_alphanbsd_nat (void)
 133 {
 134   add_core_fns (&alphanbsd_core_fns);
 135   add_core_fns (&alphanbsd_elfcore_fns);
 136 }