clang-tests-external/gdb/7.5/gdb/solist.h - llvm-archive - Git at Google

 /* Shared library declarations for GDB, the GNU Debugger.
    Copyright (C) 1990-1996, 1998-2001, 2007-2012 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 3 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, see <http://www.gnu.org/licenses/>.  */

 #ifndef SOLIST_H
 #define SOLIST_H

 #define SO_NAME_MAX_PATH_SIZE 512	/* FIXME: Should be dynamic */
 /* For domain_enum domain.  */
 #include "symtab.h"

 /* 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];

     /* Program space this shared library belongs to.  */
     struct program_space *pspace;

     /* 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.  */

     bfd *abfd;
     char symbols_loaded;	/* flag: symbols read in yet?  */

     /* objfile with symbols for a loaded library.  Target memory is read from
        ABFD.  OBJFILE may be NULL either before symbols have been loaded, if
        the file cannot be found or after the command "nosharedlibrary".  */
     struct objfile *objfile;

     struct target_section *sections;
     struct target_section *sections_end;

     /* Record the range of addresses belonging to this shared library.
        There may not be just one (e.g. if two segments are relocated
        differently); but this is only used for "info sharedlibrary".  */
     CORE_ADDR addr_low, addr_high;
   };

 struct target_so_ops
   {
     /* 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 target_section *);

     /* Free the link map info and any other private data structures
        associated with a so_list entry.  */
     void (*free_so) (struct so_list *so);

     /* Reset or free private data structures not associated with
        so_list entries.  */
     void (*clear_solib) (void);

     /* Target dependent code to run after child process fork.  */
     void (*solib_create_inferior_hook) (int from_tty);

     /* Do additional symbol handling, lookup, etc. after symbols for a
        shared object have been loaded in the usual way.  This is
        called to do any system specific symbol handling that might be
        needed.  */
     void (*special_symbol_handling) (void);

     /* Construct a list of the currently loaded shared objects.  This
        list does not include an entry for the main executable file.

        Note that we only gather information directly available from the
        inferior --- we don't examine any of the shared library files
        themselves.  The declaration of `struct so_list' says which fields
        we provide values for.  */
     struct so_list *(*current_sos) (void);

     /* Find, open, and read the symbols for the main executable.  If
        FROM_TTYP dereferences to a non-zero integer, allow messages to
        be printed.  This parameter is a pointer rather than an int
        because open_symbol_file_object is called via catch_errors and
        catch_errors requires a pointer argument.  */
     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);

     /* Find and open shared library binary file.  */
     bfd *(*bfd_open) (char *pathname);

     /* Extra hook for finding and opening a solib.
        Convenience function for remote debuggers finding host libs.  */
     int (*find_and_open_solib) (char *soname,
         unsigned o_flags, char **temp_pathname);

     /* Hook for looking up global symbols in a library-specific way.  */
     struct symbol * (*lookup_lib_global_symbol) (const struct objfile *objfile,
 						 const char *name,
 						 const domain_enum domain);

     /* Given two so_list objects, one from the GDB thread list
        and another from the list returned by current_sos, return 1
        if they represent the same library.
        Falls back to using strcmp on so_original_name field when set
        to NULL.  */
     int (*same) (struct so_list *gdb, struct so_list *inferior);

     /* Return whether a region of memory must be kept in a core file
        for shared libraries loaded before "gcore" is used to be
        handled correctly when the core file is loaded.  This only
        applies when the section would otherwise not be kept in the
        core file (in particular, for readonly sections).  */
     int (*keep_data_in_core) (CORE_ADDR vaddr,
 			      unsigned long size);
   };

 /* Free the memory associated with a (so_list *).  */
 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 shared library binary file.  */
 extern char *solib_find (char *in_pathname, int *fd);

 /* Open BFD for shared library file.  */
 extern bfd *solib_bfd_fopen (char *pathname, int fd);

 /* Find solib binary file and open it.  */
 extern bfd *solib_bfd_open (char *in_pathname);

 /* FIXME: gdbarch needs to control this variable.  */
 extern struct target_so_ops *current_target_so_ops;

 /* Handler for library-specific global symbol lookup in solib.c.  */
 struct symbol *solib_global_lookup (const struct objfile *objfile,
 				    const char *name,
 				    const domain_enum domain);

 #endif
	/* Shared library declarations for GDB, the GNU Debugger.
	Copyright (C) 1990-1996, 1998-2001, 2007-2012 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 3 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, see <http://www.gnu.org/licenses/>. */

	#ifndef SOLIST_H
	#define SOLIST_H

	#define SO_NAME_MAX_PATH_SIZE 512 /* FIXME: Should be dynamic */
	/* For domain_enum domain. */
	#include "symtab.h"

	/* 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];

	/* Program space this shared library belongs to. */
	struct program_space *pspace;

	/* 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. */

	bfd *abfd;
	char symbols_loaded; /* flag: symbols read in yet? */

	/* objfile with symbols for a loaded library. Target memory is read from
	ABFD. OBJFILE may be NULL either before symbols have been loaded, if
	the file cannot be found or after the command "nosharedlibrary". */
	struct objfile *objfile;

	struct target_section *sections;
	struct target_section *sections_end;

	/* Record the range of addresses belonging to this shared library.
	There may not be just one (e.g. if two segments are relocated
	differently); but this is only used for "info sharedlibrary". */
	CORE_ADDR addr_low, addr_high;
	};

	struct target_so_ops
	{
	/* 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 target_section *);

	/* Free the link map info and any other private data structures
	associated with a so_list entry. */
	void (free_so) (struct so_list so);

	/* Reset or free private data structures not associated with
	so_list entries. */
	void (*clear_solib) (void);

	/* Target dependent code to run after child process fork. */
	void (*solib_create_inferior_hook) (int from_tty);

	/* Do additional symbol handling, lookup, etc. after symbols for a
	shared object have been loaded in the usual way. This is
	called to do any system specific symbol handling that might be
	needed. */
	void (*special_symbol_handling) (void);

	/* Construct a list of the currently loaded shared objects. This
	list does not include an entry for the main executable file.

	Note that we only gather information directly available from the
	inferior --- we don't examine any of the shared library files
	themselves. The declaration of `struct so_list' says which fields
	we provide values for. */
	struct so_list (current_sos) (void);

	/* Find, open, and read the symbols for the main executable. If
	FROM_TTYP dereferences to a non-zero integer, allow messages to
	be printed. This parameter is a pointer rather than an int
	because open_symbol_file_object is called via catch_errors and
	catch_errors requires a pointer argument. */
	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);

	/* Find and open shared library binary file. */
	bfd (bfd_open) (char *pathname);

	/* Extra hook for finding and opening a solib.
	Convenience function for remote debuggers finding host libs. */
	int (find_and_open_solib) (char soname,
	unsigned o_flags, char **temp_pathname);

	/* Hook for looking up global symbols in a library-specific way. */
	struct symbol * (lookup_lib_global_symbol) (const struct objfile objfile,
	const char *name,
	const domain_enum domain);

	/* Given two so_list objects, one from the GDB thread list
	and another from the list returned by current_sos, return 1
	if they represent the same library.
	Falls back to using strcmp on so_original_name field when set
	to NULL. */
	int (same) (struct so_list gdb, struct so_list *inferior);

	/* Return whether a region of memory must be kept in a core file
	for shared libraries loaded before "gcore" is used to be
	handled correctly when the core file is loaded. This only
	applies when the section would otherwise not be kept in the
	core file (in particular, for readonly sections). */
	int (*keep_data_in_core) (CORE_ADDR vaddr,
	unsigned long size);
	};

	/* Free the memory associated with a (so_list ). /
	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 shared library binary file. */
	extern char solib_find (char in_pathname, int *fd);

	/* Open BFD for shared library file. */
	extern bfd solib_bfd_fopen (char pathname, int fd);

	/* Find solib binary file and open it. */
	extern bfd solib_bfd_open (char in_pathname);

	/* FIXME: gdbarch needs to control this variable. */
	extern struct target_so_ops *current_target_so_ops;

	/* Handler for library-specific global symbol lookup in solib.c. */
	struct symbol solib_global_lookup (const struct objfile objfile,
	const char *name,
	const domain_enum domain);

	#endif