diff options
Diffstat (limited to 'gdb/solib-svr4.c')
| -rw-r--r-- | gdb/solib-svr4.c | 74 |
1 files changed, 73 insertions, 1 deletions
diff --git a/gdb/solib-svr4.c b/gdb/solib-svr4.c index 48fb6cb..4f4664c 100644 --- a/gdb/solib-svr4.c +++ b/gdb/solib-svr4.c @@ -1,7 +1,8 @@ /* Handle SVR4 shared libraries for GDB, the GNU Debugger. Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999, - 2000, 2001, 2003 Free Software Foundation, Inc. + 2000, 2001, 2003, 2004 + Free Software Foundation, Inc. This file is part of GDB. @@ -1508,6 +1509,77 @@ init_fetch_link_map_offsets (struct gdbarch *gdbarch) return legacy_fetch_link_map_offsets; } +/* Most OS'es that have SVR4-style ELF dynamic libraries define a + `struct r_debug' and a `struct link_map' that are binary compatible + with the origional SVR4 implementation. */ + +/* Fetch (and possibly build) an appropriate `struct link_map_offsets' + for an ILP32 SVR4 system. */ + +struct link_map_offsets * +svr4_ilp32_fetch_link_map_offsets (void) +{ + static struct link_map_offsets lmo; + static struct link_map_offsets *lmp = NULL; + + if (lmp == NULL) + { + lmp = &lmo; + + /* Everything we need is in the first 8 bytes. */ + lmo.r_debug_size = 8; + lmo.r_map_offset = 4; + lmo.r_map_size = 4; + + /* Everything we need is in the first 20 bytes. */ + lmo.link_map_size = 20; + lmo.l_addr_offset = 0; + lmo.l_addr_size = 4; + lmo.l_name_offset = 4; + lmo.l_name_size = 4; + lmo.l_next_offset = 12; + lmo.l_next_size = 4; + lmo.l_prev_offset = 16; + lmo.l_prev_size = 4; + } + + return lmp; +} + +/* Fetch (and possibly build) an appropriate `struct link_map_offsets' + for an LP64 SVR4 system. */ + +struct link_map_offsets * +svr4_lp64_fetch_link_map_offsets (void) +{ + static struct link_map_offsets lmo; + static struct link_map_offsets *lmp = NULL; + + if (lmp == NULL) + { + lmp = &lmo; + + /* Everything we need is in the first 16 bytes. */ + lmo.r_debug_size = 16; + lmo.r_map_offset = 8; + lmo.r_map_size = 8; + + /* Everything we need is in the first 40 bytes. */ + lmo.link_map_size = 40; + lmo.l_addr_offset = 0; + lmo.l_addr_size = 8; + lmo.l_name_offset = 8; + lmo.l_name_size = 8; + lmo.l_next_offset = 24; + lmo.l_next_size = 8; + lmo.l_prev_offset = 32; + lmo.l_prev_size = 8; + } + + return lmp; +} + + static struct target_so_ops svr4_so_ops; extern initialize_file_ftype _initialize_svr4_solib; /* -Wmissing-prototypes */ |