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 char main; /* flag: is this the main executable? */ 66 char main_relocated; /* flag: has it been relocated yet? */ 67 struct objfile *objfile; /* objfile for loaded lib */ 68 struct section_table *sections; 69 struct section_table *sections_end; 70 struct section_table *textsection; 71 }; 72 73 struct target_so_ops 74 { 75 /* Adjust the section binding addresses by the base address at 76 which the object was actually mapped. */ 77 void (*relocate_section_addresses) (struct so_list *so, 78 struct section_table *); 79 80 /* Free the the link map info and any other private data 81 structures associated with a so_list entry. */ 82 void (*free_so) (struct so_list *so); 83 84 /* Reset or free private data structures not associated with 85 so_list entries. */ 86 void (*clear_solib) (void); 87 88 /* Target dependent code to run after child process fork. */ 89 void (*solib_create_inferior_hook) (void); 90 91 /* Do additional symbol handling, lookup, etc. after symbols 92 for a shared object have been loaded. */ 93 void (*special_symbol_handling) (void); 94 95 /* Construct a list of the currently loaded shared objects. */ 96 struct so_list *(*current_sos) (void); 97 98 /* Find, open, and read the symbols for the main executable. */ 99 int (*open_symbol_file_object) (void *from_ttyp); 100 101 /* Determine if PC lies in the dynamic symbol resolution code of 102 the run time loader */ 103 int (*in_dynsym_resolve_code) (CORE_ADDR pc); 104 105 /* Extra hook for finding and opening a solib. Convenience function 106 for remote debuggers finding host libs */ 107 int (*find_and_open_solib) (char *soname, 108 unsigned o_flags, char **temp_pathname); 109 110 }; 111 112 /* Free the memory associated with a (so_list *). */ 113 void free_so (struct so_list *so); 114 115 /* Return address of first so_list entry in master shared object list. */ 116 struct so_list *master_so_list (void); 117 118 /* Return address of first so_list entry in master shared object list. */ 119 struct so_list *master_so_list (void); 120 121 /* Find solib binary file and open it. */ 122 extern int solib_open (char *in_pathname, char **found_pathname); 123 124 /* Add the list of sections in so_list to the target to_sections. */ 125 extern void add_to_target_sections (int, struct target_ops *, struct so_list *); 126 127 /* FIXME: gdbarch needs to control this variable */ 128 extern struct target_so_ops *current_target_so_ops; 129 130 #define TARGET_SO_RELOCATE_SECTION_ADDRESSES \ 131 (current_target_so_ops->relocate_section_addresses) 132 #define TARGET_SO_FREE_SO (current_target_so_ops->free_so) 133 #define TARGET_SO_CLEAR_SOLIB (current_target_so_ops->clear_solib) 134 #define TARGET_SO_SOLIB_CREATE_INFERIOR_HOOK \ 135 (current_target_so_ops->solib_create_inferior_hook) 136 #define TARGET_SO_SPECIAL_SYMBOL_HANDLING \ 137 (current_target_so_ops->special_symbol_handling) 138 #define TARGET_SO_CURRENT_SOS (current_target_so_ops->current_sos) 139 #define TARGET_SO_OPEN_SYMBOL_FILE_OBJECT \ 140 (current_target_so_ops->open_symbol_file_object) 141 #define TARGET_SO_IN_DYNSYM_RESOLVE_CODE \ 142 (current_target_so_ops->in_dynsym_resolve_code) 143 #define TARGET_SO_FIND_AND_OPEN_SOLIB \ 144 (current_target_so_ops->find_and_open_solib) 145 146 #endif 147