7cd25cfc87
r_brk_offset. (mipsnbsd_lp64_fetch_link_map_offsets): Likewise. * solib-svr4.c (solib_svr4_r_brk): New. (open_symbol_file_object, svr4_current_sos): Always check the debug base. (svr4_fetch_objfile_link_map): Do not set debug_base. (enable_break): Use r_brk if it is set. (svr4_ilp32_fetch_link_map_offsets): Set r_brk_offset. (svr4_lp64_fetch_link_map_offsets): Likewise. * solib-svr4.h (struct link_map_offsets): Add r_brk_offset.
88 lines
2.8 KiB
C
88 lines
2.8 KiB
C
/* Handle shared libraries for GDB, the GNU Debugger.
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Copyright (C) 2000, 2004, 2006, 2007, 2008 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef SOLIB_SVR4_H
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#define SOLIB_SVR4_H
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struct objfile;
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struct target_so_ops;
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extern struct target_so_ops svr4_so_ops;
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/* Critical offsets and sizes which describe struct r_debug and
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struct link_map on SVR4-like targets. All offsets and sizes are
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in bytes unless otherwise specified. */
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struct link_map_offsets
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{
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/* Offset and size of r_debug.r_version. */
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int r_version_offset, r_version_size;
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/* Offset of r_debug.r_map. */
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int r_map_offset;
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/* Offset of r_debug.r_brk. */
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int r_brk_offset;
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/* Offset of r_debug.r_ldsomap. */
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int r_ldsomap_offset;
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/* Size of struct link_map (or equivalent), or at least enough of it
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to be able to obtain the fields below. */
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int link_map_size;
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/* Offset to l_addr field in struct link_map. */
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int l_addr_offset;
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/* Offset to l_ld field in struct link_map. */
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int l_ld_offset;
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/* Offset to l_next field in struct link_map. */
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int l_next_offset;
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/* Offset to l_prev field in struct link_map. */
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int l_prev_offset;
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/* Offset to l_name field in struct link_map. */
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int l_name_offset;
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};
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/* set_solib_svr4_fetch_link_map_offsets() is intended to be called by
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a <arch>_gdbarch_init() function. It is used to establish an
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architecture specific link_map_offsets fetcher for the architecture
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being defined. */
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extern void set_solib_svr4_fetch_link_map_offsets
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(struct gdbarch *gdbarch, struct link_map_offsets *(*func) (void));
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/* This function is called by thread_db.c. Return the address of the
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link map for the given objfile. */
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extern CORE_ADDR svr4_fetch_objfile_link_map (struct objfile *objfile);
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/* Fetch (and possibly build) an appropriate `struct link_map_offsets'
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for ILP32 and LP64 SVR4 systems. */
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extern struct link_map_offsets *svr4_ilp32_fetch_link_map_offsets (void);
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extern struct link_map_offsets *svr4_lp64_fetch_link_map_offsets (void);
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/* Return 1 if PC lies in the dynamic symbol resolution code of the
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SVR4 run time loader. */
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int svr4_in_dynsym_resolve_code (CORE_ADDR pc);
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#endif /* solib-svr4.h */
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