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 #if 0
  22 #include <sys/types.h>
  23 #include <sys/ldr.h>
  24 #endif
  25
  26 #include "defs.h"
  27 #include "bfd.h"
  28 #include "xcoffsolib.h"
  29 #include "inferior.h"
  30
  31 #ifdef SOLIB_SYMBOLS_MANUAL
  32
  33 extern struct symtab *current_source_symtab;
  34 extern int            current_source_line;
  35
  36 /* The real work of adding a shared library file to the symtab and
  37    the section list.  */
  38
  39 void
  40 solib_add (arg_string, from_tty, target)
  41      char *arg_string;
  42      int from_tty;
  43      struct target_ops *target;
  44 {
  45   char *val;
  46   struct vmap *vp = vmap;
  47   struct objfile *obj;
  48   struct symtab *saved_symtab;
  49   int saved_line;
  50
  51   int loaded = 0;                       /* true if any shared obj loaded */
  52   int matched = 0;                      /* true if any shared obj matched */
  53
  54   if (arg_string == 0)
  55       re_comp (".");
  56   else if (val = (char *) re_comp (arg_string)) {
  57       error ("Invalid regexp: %s", val);
  58   }
  59   if (!vp || !vp->nxt)
  60     return;
  61
  62   /* save current symbol table and line number, in case they get changed
  63      in symbol loading process. */
  64
  65   saved_symtab = current_source_symtab;
  66   saved_line = current_source_line;
  67
  68   /* skip over the first vmap, it is the main program, always loaded. */
  69   vp = vp->nxt;
  70
  71   for (; vp; vp = vp->nxt) {
  72
  73     if (re_exec (vp->name) || (*vp->member && re_exec (vp->member))) {
  74
  75       matched = 1;
  76
  77       /* if already loaded, continue with the next one. */
  78       if (vp->loaded) {
  79
  80         printf_unfiltered ("%s%s%s%s: already loaded.\n",
  81           *vp->member ? "(" : "",
  82           vp->member,
  83           *vp->member ? ") " : "",
  84           vp->name);
  85         continue;
  86       }
  87
  88       printf_unfiltered ("Loading  %s%s%s%s...",
  89           *vp->member ? "(" : "",
  90           vp->member,
  91           *vp->member ? ") " : "",
  92           vp->name);
  93       gdb_flush (gdb_stdout);
  94
  95       /* This is gross and doesn't work.  If this code is re-enabled,
  96          just stick a objfile member into the struct vmap; that's the
  97          way solib.c (for SunOS/SVR4) does it.  */
  98         obj = lookup_objfile_bfd (vp->bfd);
  99         if (!obj) {
 100           warning ("\nObj structure for the shared object not found. Loading failed.");
 101           continue;
 102         }
 103
 104         syms_from_objfile (obj, 0, 0, 0);
 105         new_symfile_objfile (obj, 0, 0);
 106         vmap_symtab (vp, 0, 0);
 107         printf_unfiltered ("Done.\n");
 108         loaded = vp->loaded = 1;
 109     }
 110   }
 111   /* if any shared object is loaded, then misc_func_vector needs sorting. */
 112   if (loaded) {
 113 #if 0
 114     sort_misc_function_vector ();
 115 #endif
 116     current_source_symtab = saved_symtab;
 117     current_source_line = saved_line;
 118
 119     /* Getting new symbols might change our opinion about what is frameless.
 120        Is this correct?? FIXME. */
 121 /*    reinit_frame_cache(); */
 122   }
 123   else if (!matched)
 124     printf_unfiltered ("No matching shared object found.\n");
 125 }
 126 #endif /* SOLIB_SYMBOLS_MANUAL */
 127
 128 /* Return the module name of a given text address. Note that returned buffer
 129    is not persistent. */
 130
 131 char *
 132 pc_load_segment_name (addr)
 133 CORE_ADDR addr;
 134 {
 135    static char buffer [BUFSIZ];
 136    struct vmap *vp = vmap;
 137
 138    buffer [0] = buffer [1] = '\0';
 139    for (; vp; vp = vp->nxt)
 140      if (vp->tstart <= addr && addr < vp->tend) {
 141         if (*vp->member) {
 142           buffer [0] = '(';
 143           strcat (&buffer[1], vp->member);
 144           strcat (buffer, ")");
 145         }
 146         strcat (buffer, vp->name);
 147         return buffer;
 148      }
 149    return "(unknown load module)";
 150 }
 151
 152 static void solib_info PARAMS ((char *, int));
 153
 154 static void
 155 solib_info (args, from_tty)
 156      char *args;
 157      int from_tty;
 158 {
 159   struct vmap *vp = vmap;
 160
 161   /* Check for new shared libraries loaded with load ().  */
 162   xcoff_relocate_symtab (inferior_pid);
 163
 164   if (vp == NULL || vp->nxt == NULL)
 165     {
 166       printf_unfiltered ("No shared libraries loaded at this time.\n");
 167       return;
 168     }
 169
 170   /* Skip over the first vmap, it is the main program, always loaded.  */
 171   vp = vp->nxt;
 172
 173   printf_unfiltered ("\
 174 Text Range              Data Range              Syms    Shared Object Library\n");
 175
 176   for (; vp != NULL; vp = vp->nxt)
 177     {
 178       printf_unfiltered ("0x%08x-0x%08x 0x%08x-0x%08x   %s      %s%s%s%s\n",
 179                          vp->tstart, vp->tend,
 180                          vp->dstart, vp->dend,
 181                          vp->loaded ? "Yes" : "No ",
 182                          *vp->member ? "(" : "",
 183                          vp->member,
 184                          *vp->member ? ") " : "",
 185                          vp->name);
 186     }
 187 }
 188
 189 void
 190 sharedlibrary_command (args, from_tty)
 191      char *args;
 192      int from_tty;
 193 {
 194   dont_repeat ();
 195
 196   /* Check for new shared libraries loaded with load ().  */
 197   xcoff_relocate_symtab (inferior_pid);
 198
 199 #ifdef SOLIB_SYMBOLS_MANUAL
 200   solib_add (args, from_tty, (struct target_ops *)0);
 201 #endif /* SOLIB_SYMBOLS_MANUAL */
 202 }
 203
 204 void
 205 _initialize_solib()
 206 {
 207   add_com ("sharedlibrary", class_files, sharedlibrary_command,
 208            "Load shared object library symbols for files matching REGEXP.");
 209   add_info ("sharedlibrary", solib_info,
 210             "Status of loaded shared object libraries");
 211 }