gdb/gould-xdep.c

   1 /* OBSOLETE /* Low level interface to ptrace, for GDB when running under Unix. */
   2 /* OBSOLETE    Copyright (C) 1986, 1987, 1989, 1991 Free Software Foundation, Inc. */
   3 /* OBSOLETE  */
   4 /* OBSOLETE This file is part of GDB. */
   5 /* OBSOLETE  */
   6 /* OBSOLETE This program is free software; you can redistribute it and/or modify */
   7 /* OBSOLETE it under the terms of the GNU General Public License as published by */
   8 /* OBSOLETE the Free Software Foundation; either version 2 of the License, or */
   9 /* OBSOLETE (at your option) any later version. */
  10 /* OBSOLETE  */
  11 /* OBSOLETE This program is distributed in the hope that it will be useful, */
  12 /* OBSOLETE but WITHOUT ANY WARRANTY; without even the implied warranty of */
  13 /* OBSOLETE MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the */
  14 /* OBSOLETE GNU General Public License for more details. */
  15 /* OBSOLETE  */
  16 /* OBSOLETE You should have received a copy of the GNU General Public License */
  17 /* OBSOLETE along with this program; if not, write to the Free Software */
  18 /* OBSOLETE Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  *x/ */
  19 /* OBSOLETE  */
  20 /* OBSOLETE #include "defs.h" */
  21 /* OBSOLETE #include "frame.h" */
  22 /* OBSOLETE #include "inferior.h" */
  23 /* OBSOLETE  */
  24 /* OBSOLETE #include <sys/param.h> */
  25 /* OBSOLETE #include <sys/dir.h> */
  26 /* OBSOLETE #include <signal.h> */
  27 /* OBSOLETE #include <sys/user.h> */
  28 /* OBSOLETE #include <sys/ioctl.h> */
  29 /* OBSOLETE #include <fcntl.h> */
  30 /* OBSOLETE  */
  31 /* OBSOLETE #include "gdbcore.h" */
  32 /* OBSOLETE  */
  33 /* OBSOLETE #include <sys/file.h> */
  34 /* OBSOLETE #include "gdb_stat.h" */
  35 /* OBSOLETE  */
  36 /* OBSOLETE \f */
  37 /* OBSOLETE /* Work with core dump and executable files, for GDB.  */
  38 /* OBSOLETE    This code would be in corefile.c if it weren't machine-dependent. *x/ */
  39 /* OBSOLETE  */
  40 /* OBSOLETE void */
  41 /* OBSOLETE core_file_command (filename, from_tty) */
  42 /* OBSOLETE      char *filename; */
  43 /* OBSOLETE      int from_tty; */
  44 /* OBSOLETE { */
  45 /* OBSOLETE   int val; */
  46 /* OBSOLETE   extern char registers[]; */
  47 /* OBSOLETE  */
  48 /* OBSOLETE   /* Discard all vestiges of any previous core file */
  49 /* OBSOLETE      and mark data and stack spaces as empty.  *x/ */
  50 /* OBSOLETE  */
  51 /* OBSOLETE   if (corefile) */
  52 /* OBSOLETE     free (corefile); */
  53 /* OBSOLETE   corefile = 0; */
  54 /* OBSOLETE  */
  55 /* OBSOLETE   if (corechan >= 0) */
  56 /* OBSOLETE     close (corechan); */
  57 /* OBSOLETE   corechan = -1; */
  58 /* OBSOLETE  */
  59 /* OBSOLETE   data_start = 0; */
  60 /* OBSOLETE   data_end = 0; */
  61 /* OBSOLETE   stack_start = STACK_END_ADDR; */
  62 /* OBSOLETE   stack_end = STACK_END_ADDR; */
  63 /* OBSOLETE  */
  64 /* OBSOLETE   /* Now, if a new core file was specified, open it and digest it.  *x/ */
  65 /* OBSOLETE  */
  66 /* OBSOLETE   if (filename) */
  67 /* OBSOLETE     { */
  68 /* OBSOLETE       filename = tilde_expand (filename); */
  69 /* OBSOLETE       make_cleanup (free, filename); */
  70 /* OBSOLETE        */
  71 /* OBSOLETE       if (have_inferior_p ()) */
  72 /* OBSOLETE     error ("To look at a core file, you must kill the program with \"kill\"."); */
  73 /* OBSOLETE       corechan = open (filename, O_RDONLY, 0); */
  74 /* OBSOLETE       if (corechan < 0) */
  75 /* OBSOLETE     perror_with_name (filename); */
  76 /* OBSOLETE       /* 4.2-style (and perhaps also sysV-style) core dump file.  *x/ */
  77 /* OBSOLETE       { */
  78 /* OBSOLETE     struct user u; */
  79 /* OBSOLETE     int reg_offset; */
  80 /* OBSOLETE  */
  81 /* OBSOLETE     val = myread (corechan, &u, sizeof u); */
  82 /* OBSOLETE     if (val < 0) */
  83 /* OBSOLETE       perror_with_name (filename); */
  84 /* OBSOLETE     data_start = exec_data_start; */
  85 /* OBSOLETE  */
  86 /* OBSOLETE     data_end = data_start + NBPG * u.u_dsize; */
  87 /* OBSOLETE     stack_start = stack_end - NBPG * u.u_ssize; */
  88 /* OBSOLETE     data_offset = NBPG * UPAGES; */
  89 /* OBSOLETE     stack_offset = NBPG * (UPAGES + u.u_dsize); */
  90 /* OBSOLETE     reg_offset = (int) u.u_ar0 - KERNEL_U_ADDR; */
  91 /* OBSOLETE  */
  92 /* OBSOLETE     /* I don't know where to find this info. */
  93 /* OBSOLETE        So, for now, mark it as not available.  *x/ */
  94 /* OBSOLETE     core_aouthdr.a_magic = 0; */
  95 /* OBSOLETE  */
  96 /* OBSOLETE     /* Read the register values out of the core file and store */
  97 /* OBSOLETE        them where `read_register' will find them.  *x/ */
  98 /* OBSOLETE  */
  99 /* OBSOLETE     { */
 100 /* OBSOLETE       register int regno; */
 101 /* OBSOLETE  */
 102 /* OBSOLETE       for (regno = 0; regno < NUM_REGS; regno++) */
 103 /* OBSOLETE         { */
 104 /* OBSOLETE           char buf[MAX_REGISTER_RAW_SIZE]; */
 105 /* OBSOLETE  */
 106 /* OBSOLETE           val = lseek (corechan, register_addr (regno, reg_offset), 0); */
 107 /* OBSOLETE           if (val < 0) */
 108 /* OBSOLETE             perror_with_name (filename); */
 109 /* OBSOLETE  */
 110 /* OBSOLETE           val = myread (corechan, buf, sizeof buf); */
 111 /* OBSOLETE           if (val < 0) */
 112 /* OBSOLETE             perror_with_name (filename); */
 113 /* OBSOLETE           supply_register (regno, buf); */
 114 /* OBSOLETE         } */
 115 /* OBSOLETE     } */
 116 /* OBSOLETE       } */
 117 /* OBSOLETE       if (filename[0] == '/') */
 118 /* OBSOLETE     corefile = savestring (filename, strlen (filename)); */
 119 /* OBSOLETE       else */
 120 /* OBSOLETE     { */
 121 /* OBSOLETE       corefile = concat (current_directory, "/", filename, NULL); */
 122 /* OBSOLETE     } */
 123 /* OBSOLETE  */
 124 /* OBSOLETE       flush_cached_frames (); */
 125 /* OBSOLETE       select_frame (get_current_frame (), 0); */
 126 /* OBSOLETE       validate_files (); */
 127 /* OBSOLETE     } */
 128 /* OBSOLETE   else if (from_tty) */
 129 /* OBSOLETE     printf ("No core file now.\n"); */
 130 /* OBSOLETE } */