diff options
Diffstat (limited to 'contrib/gdb/gdb/solib-legacy.c')
| -rw-r--r-- | contrib/gdb/gdb/solib-legacy.c | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/contrib/gdb/gdb/solib-legacy.c b/contrib/gdb/gdb/solib-legacy.c new file mode 100644 index 0000000..a87eb21 --- /dev/null +++ b/contrib/gdb/gdb/solib-legacy.c @@ -0,0 +1,153 @@ +/* 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 */ +} |
