| 1 | /* Handle shared libraries for GDB, the GNU Debugger. |
| 2 | |
| 3 | Copyright (C) 2000, 2004, 2006 |
| 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., 51 Franklin Street, Fifth Floor, |
| 21 | Boston, MA 02110-1301, USA. */ |
| 22 | |
| 23 | #ifndef SOLIB_SVR4_H |
| 24 | #define SOLIB_SVR4_H |
| 25 | |
| 26 | struct objfile; |
| 27 | |
| 28 | /* Critical offsets and sizes which describe struct r_debug and |
| 29 | struct link_map on SVR4-like targets. All offsets and sizes are |
| 30 | in bytes unless otherwise specified. */ |
| 31 | |
| 32 | struct link_map_offsets |
| 33 | { |
| 34 | /* Offset and size of r_debug.r_version. */ |
| 35 | int r_version_offset, r_version_size; |
| 36 | |
| 37 | /* Offset of r_debug.r_map. */ |
| 38 | int r_map_offset; |
| 39 | |
| 40 | /* Offset of r_debug.r_ldsomap. */ |
| 41 | int r_ldsomap_offset; |
| 42 | |
| 43 | /* Size of struct link_map (or equivalent), or at least enough of it |
| 44 | to be able to obtain the fields below. */ |
| 45 | int link_map_size; |
| 46 | |
| 47 | /* Offset to l_addr field in struct link_map. */ |
| 48 | int l_addr_offset; |
| 49 | |
| 50 | /* Size of l_addr field in struct link_map. */ |
| 51 | int l_addr_size; |
| 52 | |
| 53 | /* Offset to l_next field in struct link_map. */ |
| 54 | int l_next_offset; |
| 55 | |
| 56 | /* Size of l_next field in struct link_map. */ |
| 57 | int l_next_size; |
| 58 | |
| 59 | /* Offset to l_prev field in struct link_map. */ |
| 60 | int l_prev_offset; |
| 61 | |
| 62 | /* Size of l_prev field in struct link_map. */ |
| 63 | int l_prev_size; |
| 64 | |
| 65 | /* Offset to l_name field in struct link_map. */ |
| 66 | int l_name_offset; |
| 67 | |
| 68 | /* Size of l_name field in struct link_map. */ |
| 69 | int l_name_size; |
| 70 | }; |
| 71 | |
| 72 | /* set_solib_svr4_fetch_link_map_offsets() is intended to be called by |
| 73 | a <arch>_gdbarch_init() function. It is used to establish an |
| 74 | architecture specific link_map_offsets fetcher for the architecture |
| 75 | being defined. */ |
| 76 | |
| 77 | extern void set_solib_svr4_fetch_link_map_offsets |
| 78 | (struct gdbarch *gdbarch, struct link_map_offsets *(*func) (void)); |
| 79 | |
| 80 | /* This function is called by thread_db.c. Return the address of the |
| 81 | link map for the given objfile. */ |
| 82 | extern CORE_ADDR svr4_fetch_objfile_link_map (struct objfile *objfile); |
| 83 | |
| 84 | /* legacy_svr4_fetch_link_map_offsets_hook is a pointer to a function |
| 85 | which is used to fetch link map offsets. It will only be set |
| 86 | by solib-legacy.c, if at all. */ |
| 87 | extern struct link_map_offsets *(*legacy_svr4_fetch_link_map_offsets_hook) (void); |
| 88 | |
| 89 | /* Fetch (and possibly build) an appropriate `struct link_map_offsets' |
| 90 | for ILP32 and LP64 SVR4 systems. */ |
| 91 | extern struct link_map_offsets *svr4_ilp32_fetch_link_map_offsets (void); |
| 92 | extern struct link_map_offsets *svr4_lp64_fetch_link_map_offsets (void); |
| 93 | |
| 94 | #endif /* solib-svr4.h */ |