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 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., 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 #ifdef USG
  36 #include <sys/ptrace.h>
  37 #endif
  38
  39
  40 /* Extract the register values out of the core file and store
  41    them where `read_register' will find them.  */
  42
  43 void
  44 fetch_core_registers (core_reg_sect, core_reg_size)
  45      char *core_reg_sect;
  46      unsigned core_reg_size;
  47 {
  48   register int regno;
  49   register unsigned int addr;
  50   int bad_reg = -1;
  51
  52   for (regno = 0; regno < NUM_REGS; regno++)
  53     {
  54       addr = register_addr (regno, core_reg_size);
  55       if (addr >= core_reg_size) {
  56         if (bad_reg < 0)
  57           bad_reg = regno;
  58       } else {
  59         supply_register (regno, core_reg_sect + addr);
  60       }
  61     }
  62   if (bad_reg > 0)
  63     {
  64       error ("Register %s not found in core file.", reg_names[bad_reg]);
  65     }
  66 }
  67
  68
  69 #ifdef REGISTER_U_ADDR
  70
  71 /* Return the address in the core dump or inferior of register REGNO.
  72    BLOCKEND is the address of the end of the user structure.  */
  73
  74 unsigned int
  75 register_addr (regno, blockend)
  76      int regno;
  77      int blockend;
  78 {
  79   int addr;
  80
  81   if (regno < 0 || regno >= NUM_REGS)
  82     error ("Invalid register number %d.", regno);
  83
  84   REGISTER_U_ADDR (addr, blockend, regno);
  85
  86   return addr;
  87 }
  88
  89 #endif /* REGISTER_U_ADDR */