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., 59 Temple Place - Suite 330,
  20    Boston, MA 02111-1307, USA.  */
  21
  22 #if 0
  23 #include <sys/types.h>
  24 #include <sys/ldr.h>
  25 #endif
  26
  27 #include "defs.h"
  28 #include "bfd.h"
  29 #include "xcoffsolib.h"
  30 #include "inferior.h"
  31 #include "command.h"
  32
  33 /* Hook to relocate symbols at runtime.  If gdb is build natively, this
  34    hook is initialized in by rs6000-nat.c.  If not, it is currently left
  35    NULL and never called. */
  36
  37 void (*xcoff_relocate_symtab_hook) (unsigned int) = NULL;
  38
  39 #ifdef SOLIB_SYMBOLS_MANUAL
  40
  41 extern struct symtab *current_source_symtab;
  42 extern int current_source_line;
  43
  44 /* The real work of adding a shared library file to the symtab and
  45    the section list.  */
  46
  47 void
  48 solib_add (arg_string, from_tty, target)
  49      char *arg_string;
  50      int from_tty;
  51      struct target_ops *target;
  52 {
  53   char *val;
  54   struct vmap *vp = vmap;
  55   struct objfile *obj;
  56   struct symtab *saved_symtab;
  57   int saved_line;
  58
  59   int loaded = 0;               /* true if any shared obj loaded */
  60   int matched = 0;              /* true if any shared obj matched */
  61
  62   if (arg_string == 0)
  63     re_comp (".");
  64   else if (val = (char *) re_comp (arg_string))
  65     {
  66       error ("Invalid regexp: %s", val);
  67     }
  68   if (!vp || !vp->nxt)
  69     return;
  70
  71   /* save current symbol table and line number, in case they get changed
  72      in symbol loading process. */
  73
  74   saved_symtab = current_source_symtab;
  75   saved_line = current_source_line;
  76
  77   /* skip over the first vmap, it is the main program, always loaded. */
  78   vp = vp->nxt;
  79
  80   for (; vp; vp = vp->nxt)
  81     {
  82
  83       if (re_exec (vp->name) || (*vp->member && re_exec (vp->member)))
  84         {
  85
  86           matched = 1;
  87
  88           /* if already loaded, continue with the next one. */
  89           if (vp->loaded)
  90             {
  91
  92               printf_unfiltered ("%s%s%s%s: already loaded.\n",
  93                                  *vp->member ? "(" : "",
  94                                  vp->member,
  95                                  *vp->member ? ") " : "",
  96                                  vp->name);
  97               continue;
  98             }
  99
 100           printf_unfiltered ("Loading  %s%s%s%s...",
 101                              *vp->member ? "(" : "",
 102                              vp->member,
 103                              *vp->member ? ") " : "",
 104                              vp->name);
 105           gdb_flush (gdb_stdout);
 106
 107           /* This is gross and doesn't work.  If this code is re-enabled,
 108              just stick a objfile member into the struct vmap; that's the
 109              way solib.c (for SunOS/SVR4) does it.  */
 110           obj = lookup_objfile_bfd (vp->bfd);
 111           if (!obj)
 112             {
 113               warning ("\nObj structure for the shared object not found. Loading failed.");
 114               continue;
 115             }
 116
 117           syms_from_objfile (obj, NULL, 0, 0);
 118           new_symfile_objfile (obj, 0, 0);
 119           vmap_symtab (vp);
 120           printf_unfiltered ("Done.\n");
 121           loaded = vp->loaded = 1;
 122         }
 123     }
 124   /* if any shared object is loaded, then misc_func_vector needs sorting. */
 125   if (loaded)
 126     {
 127 #if 0
 128       sort_misc_function_vector ();
 129 #endif
 130       current_source_symtab = saved_symtab;
 131       current_source_line = saved_line;
 132
 133       /* Getting new symbols might change our opinion about what is frameless.
 134          Is this correct?? FIXME. */
 135 /*    reinit_frame_cache(); */
 136     }
 137   else if (!matched)
 138     printf_unfiltered ("No matching shared object found.\n");
 139 }
 140 #endif /* SOLIB_SYMBOLS_MANUAL */
 141
 142 /* Return the module name of a given text address. Note that returned buffer
 143    is not persistent. */
 144
 145 char *
 146 pc_load_segment_name (addr)
 147      CORE_ADDR addr;
 148 {
 149   static char buffer[BUFSIZ];
 150   struct vmap *vp = vmap;
 151
 152   buffer[0] = buffer[1] = '\0';
 153   for (; vp; vp = vp->nxt)
 154     if (vp->tstart <= addr && addr < vp->tend)
 155       {
 156         if (*vp->member)
 157           {
 158             buffer[0] = '(';
 159             strcat (&buffer[1], vp->member);
 160             strcat (buffer, ")");
 161           }
 162         strcat (buffer, vp->name);
 163         return buffer;
 164       }
 165   return "(unknown load module)";
 166 }
 167
 168 static void solib_info (char *, int);
 169
 170 static void
 171 solib_info (args, from_tty)
 172      char *args;
 173      int from_tty;
 174 {
 175   struct vmap *vp = vmap;
 176
 177   /* Check for new shared libraries loaded with load ().  */
 178   if (xcoff_relocate_symtab_hook != NULL)
 179     (*xcoff_relocate_symtab_hook) (inferior_pid);
 180
 181   if (vp == NULL || vp->nxt == NULL)
 182     {
 183       printf_unfiltered ("No shared libraries loaded at this time.\n");
 184       return;
 185     }
 186
 187   /* Skip over the first vmap, it is the main program, always loaded.  */
 188   vp = vp->nxt;
 189
 190   printf_unfiltered ("\
 191 Text Range              Data Range              Syms    Shared Object Library\n");
 192
 193   for (; vp != NULL; vp = vp->nxt)
 194     {
 195       printf_unfiltered ("0x%s-0x%s     0x%s-0x%s       %s      %s%s%s%s\n",
 196                          paddr (vp->tstart),paddr (vp->tend),
 197                          paddr (vp->dstart), paddr (vp->dend),
 198                          vp->loaded ? "Yes" : "No ",
 199                          *vp->member ? "(" : "",
 200                          vp->member,
 201                          *vp->member ? ") " : "",
 202                          vp->name);
 203     }
 204 }
 205
 206 void
 207 sharedlibrary_command (args, from_tty)
 208      char *args;
 209      int from_tty;
 210 {
 211   dont_repeat ();
 212
 213   /* Check for new shared libraries loaded with load ().  */
 214   if (xcoff_relocate_symtab_hook != NULL)
 215     (*xcoff_relocate_symtab_hook) (inferior_pid);
 216
 217 #ifdef SOLIB_SYMBOLS_MANUAL
 218   solib_add (args, from_tty, (struct target_ops *) 0);
 219 #endif /* SOLIB_SYMBOLS_MANUAL */
 220 }
 221
 222 void
 223 _initialize_solib ()
 224 {
 225   add_com ("sharedlibrary", class_files, sharedlibrary_command,
 226            "Load shared object library symbols for files matching REGEXP.");
 227   add_info ("sharedlibrary", solib_info,
 228             "Status of loaded shared object libraries");
 229 }