| 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, Boston, MA 02111-1307, 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 | #include "command.h" |
| 31 | |
| 32 | /* Hook to relocate symbols at runtime. If gdb is build natively, this |
| 33 | hook is initialized in by rs6000-nat.c. If not, it is currently left |
| 34 | NULL and never called. */ |
| 35 | |
| 36 | void (*xcoff_relocate_symtab_hook) PARAMS ((unsigned int)) = NULL; |
| 37 | |
| 38 | #ifdef SOLIB_SYMBOLS_MANUAL |
| 39 | |
| 40 | extern struct symtab *current_source_symtab; |
| 41 | extern int current_source_line; |
| 42 | |
| 43 | /* The real work of adding a shared library file to the symtab and |
| 44 | the section list. */ |
| 45 | |
| 46 | void |
| 47 | solib_add (arg_string, from_tty, target) |
| 48 | char *arg_string; |
| 49 | int from_tty; |
| 50 | struct target_ops *target; |
| 51 | { |
| 52 | char *val; |
| 53 | struct vmap *vp = vmap; |
| 54 | struct objfile *obj; |
| 55 | struct symtab *saved_symtab; |
| 56 | int saved_line; |
| 57 | |
| 58 | int loaded = 0; /* true if any shared obj loaded */ |
| 59 | int matched = 0; /* true if any shared obj matched */ |
| 60 | |
| 61 | if (arg_string == 0) |
| 62 | re_comp ("."); |
| 63 | else if (val = (char *) re_comp (arg_string)) { |
| 64 | error ("Invalid regexp: %s", val); |
| 65 | } |
| 66 | if (!vp || !vp->nxt) |
| 67 | return; |
| 68 | |
| 69 | /* save current symbol table and line number, in case they get changed |
| 70 | in symbol loading process. */ |
| 71 | |
| 72 | saved_symtab = current_source_symtab; |
| 73 | saved_line = current_source_line; |
| 74 | |
| 75 | /* skip over the first vmap, it is the main program, always loaded. */ |
| 76 | vp = vp->nxt; |
| 77 | |
| 78 | for (; vp; vp = vp->nxt) { |
| 79 | |
| 80 | if (re_exec (vp->name) || (*vp->member && re_exec (vp->member))) { |
| 81 | |
| 82 | matched = 1; |
| 83 | |
| 84 | /* if already loaded, continue with the next one. */ |
| 85 | if (vp->loaded) { |
| 86 | |
| 87 | printf_unfiltered ("%s%s%s%s: already loaded.\n", |
| 88 | *vp->member ? "(" : "", |
| 89 | vp->member, |
| 90 | *vp->member ? ") " : "", |
| 91 | vp->name); |
| 92 | continue; |
| 93 | } |
| 94 | |
| 95 | printf_unfiltered ("Loading %s%s%s%s...", |
| 96 | *vp->member ? "(" : "", |
| 97 | vp->member, |
| 98 | *vp->member ? ") " : "", |
| 99 | vp->name); |
| 100 | gdb_flush (gdb_stdout); |
| 101 | |
| 102 | /* This is gross and doesn't work. If this code is re-enabled, |
| 103 | just stick a objfile member into the struct vmap; that's the |
| 104 | way solib.c (for SunOS/SVR4) does it. */ |
| 105 | obj = lookup_objfile_bfd (vp->bfd); |
| 106 | if (!obj) { |
| 107 | warning ("\nObj structure for the shared object not found. Loading failed."); |
| 108 | continue; |
| 109 | } |
| 110 | |
| 111 | syms_from_objfile (obj, 0, 0, 0); |
| 112 | new_symfile_objfile (obj, 0, 0); |
| 113 | vmap_symtab (vp, 0, 0); |
| 114 | printf_unfiltered ("Done.\n"); |
| 115 | loaded = vp->loaded = 1; |
| 116 | } |
| 117 | } |
| 118 | /* if any shared object is loaded, then misc_func_vector needs sorting. */ |
| 119 | if (loaded) { |
| 120 | #if 0 |
| 121 | sort_misc_function_vector (); |
| 122 | #endif |
| 123 | current_source_symtab = saved_symtab; |
| 124 | current_source_line = saved_line; |
| 125 | |
| 126 | /* Getting new symbols might change our opinion about what is frameless. |
| 127 | Is this correct?? FIXME. */ |
| 128 | /* reinit_frame_cache(); */ |
| 129 | } |
| 130 | else if (!matched) |
| 131 | printf_unfiltered ("No matching shared object found.\n"); |
| 132 | } |
| 133 | #endif /* SOLIB_SYMBOLS_MANUAL */ |
| 134 | |
| 135 | /* Return the module name of a given text address. Note that returned buffer |
| 136 | is not persistent. */ |
| 137 | |
| 138 | char * |
| 139 | pc_load_segment_name (addr) |
| 140 | CORE_ADDR addr; |
| 141 | { |
| 142 | static char buffer [BUFSIZ]; |
| 143 | struct vmap *vp = vmap; |
| 144 | |
| 145 | buffer [0] = buffer [1] = '\0'; |
| 146 | for (; vp; vp = vp->nxt) |
| 147 | if (vp->tstart <= addr && addr < vp->tend) { |
| 148 | if (*vp->member) { |
| 149 | buffer [0] = '('; |
| 150 | strcat (&buffer[1], vp->member); |
| 151 | strcat (buffer, ")"); |
| 152 | } |
| 153 | strcat (buffer, vp->name); |
| 154 | return buffer; |
| 155 | } |
| 156 | return "(unknown load module)"; |
| 157 | } |
| 158 | |
| 159 | static void solib_info PARAMS ((char *, int)); |
| 160 | |
| 161 | static void |
| 162 | solib_info (args, from_tty) |
| 163 | char *args; |
| 164 | int from_tty; |
| 165 | { |
| 166 | struct vmap *vp = vmap; |
| 167 | |
| 168 | /* Check for new shared libraries loaded with load (). */ |
| 169 | if (xcoff_relocate_symtab_hook != NULL) |
| 170 | (*xcoff_relocate_symtab_hook) (inferior_pid); |
| 171 | |
| 172 | if (vp == NULL || vp->nxt == NULL) |
| 173 | { |
| 174 | printf_unfiltered ("No shared libraries loaded at this time.\n"); |
| 175 | return; |
| 176 | } |
| 177 | |
| 178 | /* Skip over the first vmap, it is the main program, always loaded. */ |
| 179 | vp = vp->nxt; |
| 180 | |
| 181 | printf_unfiltered ("\ |
| 182 | Text Range Data Range Syms Shared Object Library\n"); |
| 183 | |
| 184 | for (; vp != NULL; vp = vp->nxt) |
| 185 | { |
| 186 | printf_unfiltered ("0x%08x-0x%08x 0x%08x-0x%08x %s %s%s%s%s\n", |
| 187 | vp->tstart, vp->tend, |
| 188 | vp->dstart, vp->dend, |
| 189 | vp->loaded ? "Yes" : "No ", |
| 190 | *vp->member ? "(" : "", |
| 191 | vp->member, |
| 192 | *vp->member ? ") " : "", |
| 193 | vp->name); |
| 194 | } |
| 195 | } |
| 196 | |
| 197 | void |
| 198 | sharedlibrary_command (args, from_tty) |
| 199 | char *args; |
| 200 | int from_tty; |
| 201 | { |
| 202 | dont_repeat (); |
| 203 | |
| 204 | /* Check for new shared libraries loaded with load (). */ |
| 205 | if (xcoff_relocate_symtab_hook != NULL) |
| 206 | (*xcoff_relocate_symtab_hook) (inferior_pid); |
| 207 | |
| 208 | #ifdef SOLIB_SYMBOLS_MANUAL |
| 209 | solib_add (args, from_tty, (struct target_ops *)0); |
| 210 | #endif /* SOLIB_SYMBOLS_MANUAL */ |
| 211 | } |
| 212 | |
| 213 | void |
| 214 | _initialize_solib() |
| 215 | { |
| 216 | add_com ("sharedlibrary", class_files, sharedlibrary_command, |
| 217 | "Load shared object library symbols for files matching REGEXP."); |
| 218 | add_info ("sharedlibrary", solib_info, |
| 219 | "Status of loaded shared object libraries"); |
| 220 | } |