| 1 | /* Shared library declarations for GDB, the GNU Debugger. |
| 2 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, |
| 3 | 2001 |
| 4 | Free Software Foundation, Inc. |
| 5 | |
| 6 | This file is part of GDB. |
| 7 | |
| 8 | This program is free software; you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation; either version 2 of the License, or |
| 11 | (at your option) any later version. |
| 12 | |
| 13 | This program is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with this program; if not, write to the Free Software |
| 20 | Foundation, Inc., 59 Temple Place - Suite 330, |
| 21 | Boston, MA 02111-1307, USA. */ |
| 22 | |
| 23 | #ifndef SOLIST_H |
| 24 | #define SOLIST_H |
| 25 | |
| 26 | #define SO_NAME_MAX_PATH_SIZE 512 /* FIXME: Should be dynamic */ |
| 27 | |
| 28 | /* Forward declaration for target specific link map information. This |
| 29 | struct is opaque to all but the target specific file. */ |
| 30 | struct lm_info; |
| 31 | |
| 32 | struct so_list |
| 33 | { |
| 34 | /* The following fields of the structure come directly from the |
| 35 | dynamic linker's tables in the inferior, and are initialized by |
| 36 | current_sos. */ |
| 37 | |
| 38 | struct so_list *next; /* next structure in linked list */ |
| 39 | |
| 40 | /* A pointer to target specific link map information. Often this |
| 41 | will be a copy of struct link_map from the user process, but |
| 42 | it need not be; it can be any collection of data needed to |
| 43 | traverse the dynamic linker's data structures. */ |
| 44 | struct lm_info *lm_info; |
| 45 | |
| 46 | /* Shared object file name, exactly as it appears in the |
| 47 | inferior's link map. This may be a relative path, or something |
| 48 | which needs to be looked up in LD_LIBRARY_PATH, etc. We use it |
| 49 | to tell which entries in the inferior's dynamic linker's link |
| 50 | map we've already loaded. */ |
| 51 | char so_original_name[SO_NAME_MAX_PATH_SIZE]; |
| 52 | |
| 53 | /* shared object file name, expanded to something GDB can open */ |
| 54 | char so_name[SO_NAME_MAX_PATH_SIZE]; |
| 55 | |
| 56 | /* The following fields of the structure are built from |
| 57 | information gathered from the shared object file itself, and |
| 58 | are set when we actually add it to our symbol tables. |
| 59 | |
| 60 | current_sos must initialize these fields to 0. */ |
| 61 | |
| 62 | bfd *abfd; |
| 63 | char symbols_loaded; /* flag: symbols read in yet? */ |
| 64 | char from_tty; /* flag: print msgs? */ |
| 65 | struct objfile *objfile; /* objfile for loaded lib */ |
| 66 | struct section_table *sections; |
| 67 | struct section_table *sections_end; |
| 68 | struct section_table *textsection; |
| 69 | }; |
| 70 | |
| 71 | struct target_so_ops |
| 72 | { |
| 73 | /* Adjust the section binding addresses by the base address at |
| 74 | which the object was actually mapped. */ |
| 75 | void (*relocate_section_addresses) (struct so_list *so, |
| 76 | struct section_table *); |
| 77 | |
| 78 | /* Free the the link map info and any other private data |
| 79 | structures associated with a so_list entry. */ |
| 80 | void (*free_so) (struct so_list *so); |
| 81 | |
| 82 | /* Reset or free private data structures not associated with |
| 83 | so_list entries. */ |
| 84 | void (*clear_solib) (void); |
| 85 | |
| 86 | /* Target dependent code to run after child process fork. */ |
| 87 | void (*solib_create_inferior_hook) (void); |
| 88 | |
| 89 | /* Do additional symbol handling, lookup, etc. after symbols |
| 90 | for a shared object have been loaded. */ |
| 91 | void (*special_symbol_handling) (void); |
| 92 | |
| 93 | /* Construct a list of the currently loaded shared objects. */ |
| 94 | struct so_list *(*current_sos) (void); |
| 95 | |
| 96 | /* Find, open, and read the symbols for the main executable. */ |
| 97 | int (*open_symbol_file_object) (void *from_ttyp); |
| 98 | |
| 99 | /* Determine if PC lies in the dynamic symbol resolution code of |
| 100 | the run time loader */ |
| 101 | int (*in_dynsym_resolve_code) (CORE_ADDR pc); |
| 102 | |
| 103 | /* Extra hook for finding and opening a solib. |
| 104 | Convenience function for remote debuggers finding host libs. */ |
| 105 | int (*find_and_open_solib) (char *soname, |
| 106 | unsigned o_flags, char **temp_pathname); |
| 107 | |
| 108 | }; |
| 109 | |
| 110 | /* Free the memory associated with a (so_list *). */ |
| 111 | void free_so (struct so_list *so); |
| 112 | |
| 113 | /* Return address of first so_list entry in master shared object list. */ |
| 114 | struct so_list *master_so_list (void); |
| 115 | |
| 116 | /* Find solib binary file and open it. */ |
| 117 | extern int solib_open (char *in_pathname, char **found_pathname); |
| 118 | |
| 119 | /* FIXME: gdbarch needs to control this variable */ |
| 120 | extern struct target_so_ops *current_target_so_ops; |
| 121 | |
| 122 | #define TARGET_SO_RELOCATE_SECTION_ADDRESSES \ |
| 123 | (current_target_so_ops->relocate_section_addresses) |
| 124 | #define TARGET_SO_FIND_AND_OPEN_SOLIB \ |
| 125 | (current_target_so_ops->find_and_open_solib) |
| 126 | #define TARGET_SO_IN_DYNSYM_RESOLVE_CODE \ |
| 127 | (current_target_so_ops->in_dynsym_resolve_code) |
| 128 | |
| 129 | #endif |