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