gdb/coredep.c

   1 /* Extract registers from a "standard" core file, for GDB.
   2    Copyright (C) 1988-1991  Free Software Foundation, Inc.
   3
   4 This file is part of GDB.
   5
   6 GDB 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 1, or (at your option)
   9 any later version.
  10
  11 GDB 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 GDB; see the file COPYING.  If not, write to
  18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  19
  20 /* core.c is supposed to be the more machine-independent aspects of this;
  21    this file is more machine-specific.  */
  22
  23 #include "defs.h"
  24 #include "param.h"
  25 #include "gdbcore.h"
  26
  27 /* Some of these are needed on various systems, perhaps, to expand
  28    REGISTER_U_ADDR appropriately?  */
  29 /* #include <sys/core.h> */
  30 #include <sys/param.h>
  31 #include <sys/dir.h>
  32 #include <sys/file.h>
  33 #include <sys/stat.h>
  34 #include <sys/user.h>
  35
  36
  37 /* Extract the register values out of the core file and store
  38    them where `read_register' will find them.  */
  39
  40 void
  41 fetch_core_registers (core_reg_sect, core_reg_size)
  42      char *core_reg_sect;
  43      unsigned core_reg_size;
  44 {
  45   register int regno;
  46   register unsigned int addr;
  47   int bad_reg = -1;
  48
  49   for (regno = 0; regno < NUM_REGS; regno++)
  50     {
  51       addr = register_addr (regno, core_reg_size);
  52       if (addr >= core_reg_size) {
  53         if (bad_reg < 0)
  54           bad_reg = regno;
  55       } else {
  56         supply_register (regno, core_reg_sect + addr);
  57       }
  58     }
  59   if (bad_reg > 0)
  60     {
  61       error ("Register %s not found in core file.", reg_names[bad_reg]);
  62     }
  63 }
  64
  65
  66 #ifdef REGISTER_U_ADDR
  67
  68 /* Return the address in the core dump or inferior of register REGNO.
  69    BLOCKEND is the address of the end of the user structure.  */
  70
  71 unsigned int
  72 register_addr (regno, blockend)
  73      int regno;
  74      int blockend;
  75 {
  76   int addr;
  77
  78   if (regno < 0 || regno >= NUM_REGS)
  79     error ("Invalid register number %d.", regno);
  80
  81   REGISTER_U_ADDR (addr, blockend, regno);
  82
  83   return addr;
  84 }
  85
  86 #endif /* REGISTER_U_ADDR */