gdb/xcoffsolib.c

   1 /* Shared library support for RS/6000 (xcoff) object files, for GDB.
   2    Copyright 1991, 1992 Free Software Foundation.
   3    Contributed by IBM Corporation.
   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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  20
  21 #include <sys/types.h>
  22 #include <sys/ldr.h>
  23
  24 #include "defs.h"
  25 #include "bfd.h"
  26 #include "xcoffsolib.h"
  27
  28 extern struct symtab *current_source_symtab;
  29 extern int            current_source_line;
  30
  31 /* The real work of adding a shared library file to the symtab and
  32    the section list.  */
  33
  34 void
  35 solib_add (arg_string, from_tty, target)
  36      char *arg_string;
  37      int from_tty;
  38      struct target_ops *target;
  39 {
  40   char *val;
  41   struct vmap *vp = vmap;
  42   struct objfile *obj;
  43   struct symtab *saved_symtab;
  44   int saved_line;
  45
  46   int loaded = 0;                       /* true if any shared obj loaded */
  47   int matched = 0;                      /* true if any shared obj matched */
  48
  49   if (arg_string == 0)
  50       re_comp (".");
  51   else if (val = (char *) re_comp (arg_string)) {
  52       error ("Invalid regexp: %s", val);
  53   }
  54   if (!vp || !vp->nxt)
  55     return;
  56
  57   /* save current symbol table and line number, in case they get changed
  58      in symbol loading process. */
  59
  60   saved_symtab = current_source_symtab;
  61   saved_line = current_source_line;
  62
  63   /* skip over the first vmap, it is the main program, always loaded. */
  64   vp = vp->nxt;
  65
  66   for (; vp; vp = vp->nxt) {
  67
  68     if (re_exec (vp->name) || (*vp->member && re_exec (vp->member))) {
  69
  70       matched = 1;
  71
  72       /* if already loaded, continue with the next one. */
  73       if (vp->loaded) {
  74
  75         printf ("%s%s%s%s: already loaded.\n",
  76           *vp->member ? "(" : "",
  77           vp->member,
  78           *vp->member ? ") " : "",
  79           vp->name);
  80         continue;
  81       }
  82
  83       printf ("Loading  %s%s%s%s...",
  84           *vp->member ? "(" : "",
  85           vp->member,
  86           *vp->member ? ") " : "",
  87           vp->name);
  88       fflush (stdout);
  89
  90         obj = lookup_objfile_bfd (vp->bfd);
  91         if (!obj) {
  92           warning ("\nObj structure for the shared object not found. Loading failed.");
  93           continue;
  94         }
  95
  96         syms_from_objfile (obj, 0, 0, 0);
  97         new_symfile_objfile (obj, 0, 0);
  98         vmap_symtab (vp, 0, 0);
  99         printf ("Done.\n");
 100         loaded = vp->loaded = 1;
 101     }
 102   }
 103   /* if any shared object is loaded, then misc_func_vector needs sorting. */
 104   if (loaded) {
 105 #if 0
 106     sort_misc_function_vector ();
 107 #endif
 108     current_source_symtab = saved_symtab;
 109     current_source_line = saved_line;
 110
 111     /* Getting new symbols might change our opinion about what is frameless.
 112        Is this correct?? FIXME. */
 113 /*    reinit_frame_cache(); */
 114   }
 115   else if (!matched)
 116     printf ("No matching shared object found.\n");
 117 }
 118
 119
 120 /* Return the module name of a given text address. Note that returned buffer
 121    is not persistent. */
 122
 123 char *
 124 pc_load_segment_name (addr)
 125 CORE_ADDR addr;
 126 {
 127    static char buffer [BUFSIZ];
 128    struct vmap *vp = vmap;
 129
 130    buffer [0] = buffer [1] = '\0';
 131    for (; vp; vp = vp->nxt)
 132      if (vp->tstart <= addr && addr < vp->tend) {
 133         if (*vp->member) {
 134           buffer [0] = '(';
 135           strcat (&buffer[1], vp->member);
 136           strcat (buffer, ")");
 137         }
 138         strcat (buffer, vp->name);
 139         return buffer;
 140      }
 141    return "(unknown load module)";
 142 }
 143
 144
 145 solib_info (ldi)
 146 register struct ld_info *ldi;
 147 {
 148
 149    struct vmap *vp = vmap;
 150
 151    if (!vp || !vp->nxt) {
 152      printf("No shared libraries loaded at this time.\n");
 153      return;
 154    }
 155
 156    /* skip over the first vmap, it is the main program, always loaded. */
 157    vp = vp->nxt;
 158
 159    printf ("\
 160 Text Range              Data Range              Syms    Shared Object Library\n");
 161
 162    for (; vp; vp = vp->nxt) {
 163
 164      printf ("0x%08x-0x%08x     0x%08x-0x%08x   %s      %s%s%s%s\n",
 165         vp->tstart, vp->tend,
 166         vp->dstart, vp->dend,
 167         vp->loaded ? "Yes" : "No ",
 168         *vp->member ? "(" : "",
 169         vp->member,
 170         *vp->member ? ") " : "",
 171         vp->name);
 172    }
 173 }
 174
 175
 176 void
 177 sharedlibrary_command (args, from_tty)
 178   char *args;
 179   int from_tty;
 180 {
 181   dont_repeat();
 182   solib_add (args, from_tty, (struct target_ops *)0);
 183 }
 184
 185 void
 186 _initialize_solib()
 187 {
 188
 189   add_com("sharedlibrary", class_files, sharedlibrary_command,
 190            "Load shared object library symbols for files matching REGEXP.");
 191   add_info("sharedlibrary", solib_info,
 192            "Status of loaded shared object libraries");
 193 }