/* Provide legacy r_debug and link_map support for SVR4-like native targets. Copyright 2000, 2001 Free Software Foundation, Inc. This file is part of GDB. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include "defs.h" #include "gdbcore.h" #include "solib-svr4.h" #ifdef HAVE_LINK_H #ifdef HAVE_NLIST_H /* nlist.h needs to be included before link.h on some older *BSD systems. */ #include <nlist.h> #endif #include <link.h> /* Fetch (and possibly build) an appropriate link_map_offsets structure for native targets using struct definitions from link.h. */ static struct link_map_offsets * legacy_svr4_fetch_link_map_offsets (void) { static struct link_map_offsets lmo; static struct link_map_offsets *lmp = 0; #if defined (HAVE_STRUCT_LINK_MAP32) static struct link_map_offsets lmo32; static struct link_map_offsets *lmp32 = 0; #endif #ifndef offsetof #define offsetof(TYPE, MEMBER) ((unsigned long) &((TYPE *)0)->MEMBER) #endif #define fieldsize(TYPE, MEMBER) (sizeof (((TYPE *)0)->MEMBER)) if (lmp == 0) { lmp = &lmo; #ifdef HAVE_STRUCT_LINK_MAP_WITH_L_MEMBERS lmo.r_debug_size = sizeof (struct r_debug); lmo.r_map_offset = offsetof (struct r_debug, r_map); lmo.r_map_size = fieldsize (struct r_debug, r_map); lmo.link_map_size = sizeof (struct link_map); lmo.l_addr_offset = offsetof (struct link_map, l_addr); lmo.l_addr_size = fieldsize (struct link_map, l_addr); lmo.l_next_offset = offsetof (struct link_map, l_next); lmo.l_next_size = fieldsize (struct link_map, l_next); lmo.l_prev_offset = offsetof (struct link_map, l_prev); lmo.l_prev_size = fieldsize (struct link_map, l_prev); lmo.l_name_offset = offsetof (struct link_map, l_name); lmo.l_name_size = fieldsize (struct link_map, l_name); #else /* !defined(HAVE_STRUCT_LINK_MAP_WITH_L_MEMBERS) */ #ifdef HAVE_STRUCT_LINK_MAP_WITH_LM_MEMBERS lmo.link_map_size = sizeof (struct link_map); lmo.l_addr_offset = offsetof (struct link_map, lm_addr); lmo.l_addr_size = fieldsize (struct link_map, lm_addr); lmo.l_next_offset = offsetof (struct link_map, lm_next); lmo.l_next_size = fieldsize (struct link_map, lm_next); lmo.l_name_offset = offsetof (struct link_map, lm_name); lmo.l_name_size = fieldsize (struct link_map, lm_name); #else /* !defined(HAVE_STRUCT_LINK_MAP_WITH_LM_MEMBERS) */ #if HAVE_STRUCT_SO_MAP_WITH_SOM_MEMBERS lmo.link_map_size = sizeof (struct so_map); lmo.l_addr_offset = offsetof (struct so_map, som_addr); lmo.l_addr_size = fieldsize (struct so_map, som_addr); lmo.l_next_offset = offsetof (struct so_map, som_next); lmo.l_next_size = fieldsize (struct so_map, som_next); lmo.l_name_offset = offsetof (struct so_map, som_path); lmo.l_name_size = fieldsize (struct so_map, som_path); #endif /* HAVE_STRUCT_SO_MAP_WITH_SOM_MEMBERS */ #endif /* HAVE_STRUCT_LINK_MAP_WITH_LM_MEMBERS */ #endif /* HAVE_STRUCT_LINK_MAP_WITH_L_MEMBERS */ } #if defined (HAVE_STRUCT_LINK_MAP32) if (lmp32 == 0) { lmp32 = &lmo32; lmo32.r_debug_size = sizeof (struct r_debug32); lmo32.r_map_offset = offsetof (struct r_debug32, r_map); lmo32.r_map_size = fieldsize (struct r_debug32, r_map); lmo32.link_map_size = sizeof (struct link_map32); lmo32.l_addr_offset = offsetof (struct link_map32, l_addr); lmo32.l_addr_size = fieldsize (struct link_map32, l_addr); lmo32.l_next_offset = offsetof (struct link_map32, l_next); lmo32.l_next_size = fieldsize (struct link_map32, l_next); lmo32.l_prev_offset = offsetof (struct link_map32, l_prev); lmo32.l_prev_size = fieldsize (struct link_map32, l_prev); lmo32.l_name_offset = offsetof (struct link_map32, l_name); lmo32.l_name_size = fieldsize (struct link_map32, l_name); } #endif /* defined (HAVE_STRUCT_LINK_MAP32) */ #if defined (HAVE_STRUCT_LINK_MAP32) if (exec_bfd != NULL) { if (bfd_get_arch_size (exec_bfd) == 32) return lmp32; } if (TARGET_PTR_BIT == 32) return lmp32; #endif return lmp; } #endif /* HAVE_LINK_H */ extern initialize_file_ftype _initialize_svr4_lm; /* -Wmissing-prototypes */ void _initialize_svr4_lm (void) { #ifdef HAVE_LINK_H legacy_svr4_fetch_link_map_offsets_hook = legacy_svr4_fetch_link_map_offsets; #endif /* HAVE_LINK_H */ }