binutils-gdb/gdb/solist.h

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/* Shared library declarations for GDB, the GNU Debugger.
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Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000,
2001
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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. */
#ifndef SOLIST_H
#define SOLIST_H
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#define SO_NAME_MAX_PATH_SIZE 512 /* FIXME: Should be dynamic */
/* Forward declaration for target specific link map information. This
struct is opaque to all but the target specific file. */
struct lm_info;
struct so_list
{
/* The following fields of the structure come directly from the
dynamic linker's tables in the inferior, and are initialized by
current_sos. */
struct so_list *next; /* next structure in linked list */
/* A pointer to target specific link map information. Often this
will be a copy of struct link_map from the user process, but
it need not be; it can be any collection of data needed to
traverse the dynamic linker's data structures. */
struct lm_info *lm_info;
/* Shared object file name, exactly as it appears in the
inferior's link map. This may be a relative path, or something
which needs to be looked up in LD_LIBRARY_PATH, etc. We use it
to tell which entries in the inferior's dynamic linker's link
map we've already loaded. */
char so_original_name[SO_NAME_MAX_PATH_SIZE];
/* shared object file name, expanded to something GDB can open */
char so_name[SO_NAME_MAX_PATH_SIZE];
/* The following fields of the structure are built from
information gathered from the shared object file itself, and
are set when we actually add it to our symbol tables.
current_sos must initialize these fields to 0. */
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bfd *abfd;
char symbols_loaded; /* flag: symbols read in yet? */
char from_tty; /* flag: print msgs? */
struct objfile *objfile; /* objfile for loaded lib */
struct section_table *sections;
struct section_table *sections_end;
struct section_table *textsection;
};
struct target_so_ops
{
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/* Adjust the section binding addresses by the base address at
which the object was actually mapped. */
void (*relocate_section_addresses) (struct so_list *so,
struct section_table *);
/* Free the the link map info and any other private data
structures associated with a so_list entry. */
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void (*free_so) (struct so_list *so);
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/* Reset or free private data structures not associated with
so_list entries. */
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void (*clear_solib) (void);
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/* Target dependent code to run after child process fork. */
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void (*solib_create_inferior_hook) (void);
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/* Do additional symbol handling, lookup, etc. after symbols
for a shared object have been loaded. */
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void (*special_symbol_handling) (void);
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/* Construct a list of the currently loaded shared objects. */
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struct so_list *(*current_sos) (void);
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/* Find, open, and read the symbols for the main executable. */
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int (*open_symbol_file_object) (void *from_ttyp);
/* Determine if PC lies in the dynamic symbol resolution code of
the run time loader */
int (*in_dynsym_resolve_code) (CORE_ADDR pc);
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/* Extra hook for finding and opening a solib.
Convenience function for remote debuggers finding host libs. */
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int (*find_and_open_solib) (char *soname,
unsigned o_flags, char **temp_pathname);
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};
/* Free the memory associated with a (so_list *). */
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void free_so (struct so_list *so);
/* Return address of first so_list entry in master shared object list. */
struct so_list *master_so_list (void);
/* Find solib binary file and open it. */
extern int solib_open (char *in_pathname, char **found_pathname);
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/* FIXME: gdbarch needs to control this variable */
extern struct target_so_ops *current_target_so_ops;
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#define TARGET_SO_RELOCATE_SECTION_ADDRESSES \
(current_target_so_ops->relocate_section_addresses)
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#define TARGET_SO_FREE_SO (current_target_so_ops->free_so)
#define TARGET_SO_CLEAR_SOLIB (current_target_so_ops->clear_solib)
#define TARGET_SO_SOLIB_CREATE_INFERIOR_HOOK \
(current_target_so_ops->solib_create_inferior_hook)
#define TARGET_SO_SPECIAL_SYMBOL_HANDLING \
(current_target_so_ops->special_symbol_handling)
#define TARGET_SO_CURRENT_SOS (current_target_so_ops->current_sos)
#define TARGET_SO_OPEN_SYMBOL_FILE_OBJECT \
(current_target_so_ops->open_symbol_file_object)
#define TARGET_SO_IN_DYNSYM_RESOLVE_CODE \
(current_target_so_ops->in_dynsym_resolve_code)
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#define TARGET_SO_FIND_AND_OPEN_SOLIB \
(current_target_so_ops->find_and_open_solib)
#endif