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