/* Handle shared libraries for GDB, the GNU Debugger.
- Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- 2000, 2001, 2002, 2003, 2005, 2006, 2007, 2008, 2009, 2010
- Free Software Foundation, Inc.
+ Copyright (C) 1990-2003, 2005-2012 Free Software Foundation, Inc.
This file is part of GDB.
#include "remote.h"
#include "solib.h"
#include "interps.h"
+#include "filesystem.h"
+#include "gdb_bfd.h"
/* Architecture-specific operations. */
solib_ops (struct gdbarch *gdbarch)
{
struct target_so_ops **ops = gdbarch_data (gdbarch, solib_data);
+
return *ops;
}
set_solib_ops (struct gdbarch *gdbarch, struct target_so_ops *new_ops)
{
struct target_so_ops **ops = gdbarch_data (gdbarch, solib_data);
+
*ops = new_ops;
}
\f
show_solib_search_path (struct ui_file *file, int from_tty,
struct cmd_list_element *c, const char *value)
{
- fprintf_filtered (file, _("\
-The search path for loading non-absolute shared library symbol files is %s.\n"),
+ fprintf_filtered (file, _("The search path for loading non-absolute "
+ "shared library symbol files is %s.\n"),
value);
}
-/*
-
- GLOBAL FUNCTION
-
- solib_find -- Find a shared library file.
-
- SYNOPSIS
-
- char *solib_find (char *in_pathname, int *fd);
+/* Same as HAVE_DOS_BASED_FILE_SYSTEM, but useable as an rvalue. */
+#if (HAVE_DOS_BASED_FILE_SYSTEM)
+# define DOS_BASED_FILE_SYSTEM 1
+#else
+# define DOS_BASED_FILE_SYSTEM 0
+#endif
- DESCRIPTION
+/* Returns the full pathname of the shared library file, or NULL if
+ not found. (The pathname is malloc'ed; it needs to be freed by the
+ caller.) *FD is set to either -1 or an open file handle for the
+ library.
Global variable GDB_SYSROOT is used as a prefix directory
to search for shared libraries if they have an absolute path.
* If gdb_sysroot is NOT set, perform the following two searches:
* Look in inferior's $PATH.
* Look in inferior's $LD_LIBRARY_PATH.
- *
+ *
* The last check avoids doing this search when targetting remote
* machines since gdb_sysroot will almost always be set.
-
- RETURNS
-
- Full pathname of the shared library file, or NULL if not found.
- (The pathname is malloc'ed; it needs to be freed by the caller.)
- *FD is set to either -1 or an open file handle for the library. */
+*/
char *
solib_find (char *in_pathname, int *fd)
int gdb_sysroot_is_empty;
const char *solib_symbols_extension
= gdbarch_solib_symbols_extension (target_gdbarch);
+ const char *fskind = effective_target_file_system_kind ();
+ struct cleanup *old_chain = make_cleanup (null_cleanup, NULL);
+ char *sysroot = NULL;
/* If solib_symbols_extension is set, replace the file's
extension. */
if (solib_symbols_extension)
{
char *p = in_pathname + strlen (in_pathname);
+
while (p > in_pathname && *p != '.')
p--;
gdb_sysroot_is_empty = (gdb_sysroot == NULL || *gdb_sysroot == 0);
- if (! IS_ABSOLUTE_PATH (in_pathname) || gdb_sysroot_is_empty)
- temp_pathname = in_pathname;
- else
+ if (!gdb_sysroot_is_empty)
{
int prefix_len = strlen (gdb_sysroot);
&& IS_DIR_SEPARATOR (gdb_sysroot[prefix_len - 1]))
prefix_len--;
+ sysroot = savestring (gdb_sysroot, prefix_len);
+ make_cleanup (xfree, sysroot);
+ }
+
+ /* If we're on a non-DOS-based system, backslashes won't be
+ understood as directory separator, so, convert them to forward
+ slashes, iff we're supposed to handle DOS-based file system
+ semantics for target paths. */
+ if (!DOS_BASED_FILE_SYSTEM && fskind == file_system_kind_dos_based)
+ {
+ char *p;
+
+ /* Avoid clobbering our input. */
+ p = alloca (strlen (in_pathname) + 1);
+ strcpy (p, in_pathname);
+ in_pathname = p;
+
+ for (; *p; p++)
+ {
+ if (*p == '\\')
+ *p = '/';
+ }
+ }
+
+ /* Note, we're interested in IS_TARGET_ABSOLUTE_PATH, not
+ IS_ABSOLUTE_PATH. The latter is for host paths only, while
+ IN_PATHNAME is a target path. For example, if we're supposed to
+ be handling DOS-like semantics we want to consider a
+ 'c:/foo/bar.dll' path as an absolute path, even on a Unix box.
+ With such a path, before giving up on the sysroot, we'll try:
+
+ 1st attempt, c:/foo/bar.dll ==> /sysroot/c:/foo/bar.dll
+ 2nd attempt, c:/foo/bar.dll ==> /sysroot/c/foo/bar.dll
+ 3rd attempt, c:/foo/bar.dll ==> /sysroot/foo/bar.dll
+ */
+
+ if (!IS_TARGET_ABSOLUTE_PATH (fskind, in_pathname) || gdb_sysroot_is_empty)
+ temp_pathname = xstrdup (in_pathname);
+ else
+ {
+ int need_dir_separator;
+
+ need_dir_separator = !IS_DIR_SEPARATOR (in_pathname[0]);
+
/* Cat the prefixed pathname together. */
- temp_pathname = alloca (prefix_len + strlen (in_pathname) + 1);
- strncpy (temp_pathname, gdb_sysroot, prefix_len);
- temp_pathname[prefix_len] = '\0';
- strcat (temp_pathname, in_pathname);
+ temp_pathname = concat (sysroot,
+ need_dir_separator ? SLASH_STRING : "",
+ in_pathname, (char *) NULL);
}
/* Handle remote files. */
if (remote_filename_p (temp_pathname))
{
*fd = -1;
- return xstrdup (temp_pathname);
+ do_cleanups (old_chain);
+ return temp_pathname;
}
/* Now see if we can open it. */
found_file = open (temp_pathname, O_RDONLY | O_BINARY, 0);
+ if (found_file < 0)
+ xfree (temp_pathname);
- /* We try to find the library in various ways. After each attempt
- (except for the one above), either found_file >= 0 and
- temp_pathname is a malloc'd string, or found_file < 0 and
- temp_pathname does not point to storage that needs to be
- freed. */
+ /* If the search in gdb_sysroot failed, and the path name has a
+ drive spec (e.g, c:/foo), try stripping ':' from the drive spec,
+ and retrying in the sysroot:
+ c:/foo/bar.dll ==> /sysroot/c/foo/bar.dll. */
- if (found_file < 0)
- temp_pathname = NULL;
- else
- temp_pathname = xstrdup (temp_pathname);
+ if (found_file < 0
+ && !gdb_sysroot_is_empty
+ && HAS_TARGET_DRIVE_SPEC (fskind, in_pathname))
+ {
+ int need_dir_separator = !IS_DIR_SEPARATOR (in_pathname[2]);
+ char *drive = savestring (in_pathname, 1);
+
+ temp_pathname = concat (sysroot,
+ SLASH_STRING,
+ drive,
+ need_dir_separator ? SLASH_STRING : "",
+ in_pathname + 2, (char *) NULL);
+ xfree (drive);
+
+ found_file = open (temp_pathname, O_RDONLY | O_BINARY, 0);
+ if (found_file < 0)
+ {
+ xfree (temp_pathname);
+
+ /* If the search in gdb_sysroot still failed, try fully
+ stripping the drive spec, and trying once more in the
+ sysroot before giving up.
+
+ c:/foo/bar.dll ==> /sysroot/foo/bar.dll. */
+
+ temp_pathname = concat (sysroot,
+ need_dir_separator ? SLASH_STRING : "",
+ in_pathname + 2, (char *) NULL);
+
+ found_file = open (temp_pathname, O_RDONLY | O_BINARY, 0);
+ if (found_file < 0)
+ xfree (temp_pathname);
+ }
+ }
+
+ do_cleanups (old_chain);
+
+ /* We try to find the library in various ways. After each attempt,
+ either found_file >= 0 and temp_pathname is a malloc'd string, or
+ found_file < 0 and temp_pathname does not point to storage that
+ needs to be freed. */
+
+ if (found_file < 0)
+ temp_pathname = NULL;
+
+ /* If not found, search the solib_search_path (if any). */
+ if (found_file < 0 && solib_search_path != NULL)
+ found_file = openp (solib_search_path, OPF_TRY_CWD_FIRST,
+ in_pathname, O_RDONLY | O_BINARY, &temp_pathname);
/* If the search in gdb_sysroot failed, and the path name is
absolute at this point, make it relative. (openp will try and open the
file according to its absolute path otherwise, which is not what we want.)
Affects subsequent searches for this solib. */
- if (found_file < 0 && IS_ABSOLUTE_PATH (in_pathname))
+ if (found_file < 0 && IS_TARGET_ABSOLUTE_PATH (fskind, in_pathname))
{
/* First, get rid of any drive letters etc. */
- while (!IS_DIR_SEPARATOR (*in_pathname))
- in_pathname++;
+ while (!IS_TARGET_DIR_SEPARATOR (fskind, *in_pathname))
+ in_pathname++;
/* Next, get rid of all leading dir separators. */
- while (IS_DIR_SEPARATOR (*in_pathname))
- in_pathname++;
+ while (IS_TARGET_DIR_SEPARATOR (fskind, *in_pathname))
+ in_pathname++;
}
-
+
/* If not found, search the solib_search_path (if any). */
if (found_file < 0 && solib_search_path != NULL)
found_file = openp (solib_search_path, OPF_TRY_CWD_FIRST,
in_pathname, O_RDONLY | O_BINARY, &temp_pathname);
-
+
/* If not found, next search the solib_search_path (if any) for the basename
only (ignoring the path). This is to allow reading solibs from a path
that differs from the opened path. */
if (found_file < 0 && solib_search_path != NULL)
found_file = openp (solib_search_path, OPF_TRY_CWD_FIRST,
- lbasename (in_pathname), O_RDONLY | O_BINARY,
- &temp_pathname);
+ target_lbasename (fskind, in_pathname),
+ O_RDONLY | O_BINARY, &temp_pathname);
- /* If not found, try to use target supplied solib search method */
+ /* If not found, try to use target supplied solib search method. */
if (found_file < 0 && ops->find_and_open_solib)
found_file = ops->find_and_open_solib (in_pathname, O_RDONLY | O_BINARY,
&temp_pathname);
- /* If not found, next search the inferior's $PATH environment variable. */
+ /* If not found, next search the inferior's $PATH environment variable. */
if (found_file < 0 && gdb_sysroot_is_empty)
found_file = openp (get_in_environ (current_inferior ()->environment,
"PATH"),
OPF_TRY_CWD_FIRST, in_pathname, O_RDONLY | O_BINARY,
&temp_pathname);
- /* If not found, next search the inferior's $LD_LIBRARY_PATH
- environment variable. */
+ /* If not found, next search the inferior's $LD_LIBRARY_PATH
+ environment variable. */
if (found_file < 0 && gdb_sysroot_is_empty)
found_file = openp (get_in_environ (current_inferior ()->environment,
"LD_LIBRARY_PATH"),
it is used as file handle to open the file. Throws an error if the file
could not be opened. Handles both local and remote file access.
- PATHNAME must be malloc'ed by the caller. If successful, the new BFD's
- name will point to it. If unsuccessful, PATHNAME will be freed and the
- FD will be closed (unless FD was -1). */
+ PATHNAME must be malloc'ed by the caller. It will be freed by this
+ function. If unsuccessful, the FD will be closed (unless FD was
+ -1). */
bfd *
solib_bfd_fopen (char *pathname, int fd)
}
else
{
- abfd = bfd_fopen (pathname, gnutarget, FOPEN_RB, fd);
+ abfd = gdb_bfd_fopen (pathname, gnutarget, FOPEN_RB, fd);
if (abfd)
bfd_set_cacheable (abfd, 1);
- else if (fd != -1)
- close (fd);
}
if (!abfd)
pathname, bfd_errmsg (bfd_get_error ()));
}
+ xfree (pathname);
+
return abfd;
}
/* Check bfd format. */
if (!bfd_check_format (abfd, bfd_object))
{
- bfd_close (abfd);
- make_cleanup (xfree, found_pathname);
+ make_cleanup_bfd_unref (abfd);
error (_("`%s': not in executable format: %s"),
- found_pathname, bfd_errmsg (bfd_get_error ()));
+ bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ()));
}
/* Check bfd arch. */
b = gdbarch_bfd_arch_info (target_gdbarch);
if (!b->compatible (b, bfd_get_arch_info (abfd)))
warning (_("`%s': Shared library architecture %s is not compatible "
- "with target architecture %s."), found_pathname,
+ "with target architecture %s."), bfd_get_filename (abfd),
bfd_get_arch_info (abfd)->printable_name, b->printable_name);
return abfd;
}
+/* Given a pointer to one of the shared objects in our list of mapped
+ objects, use the recorded name to open a bfd descriptor for the
+ object, build a section table, relocate all the section addresses
+ by the base address at which the shared object was mapped, and then
+ add the sections to the target's section table.
-/*
-
- LOCAL FUNCTION
-
- solib_map_sections -- open bfd and build sections for shared lib
-
- SYNOPSIS
-
- static int solib_map_sections (struct so_list *so)
-
- DESCRIPTION
-
- Given a pointer to one of the shared objects in our list
- of mapped objects, use the recorded name to open a bfd
- descriptor for the object, build a section table, and then
- relocate all the section addresses by the base address at
- which the shared object was mapped.
-
- FIXMES
-
- In most (all?) cases the shared object file name recorded in the
- dynamic linkage tables will be a fully qualified pathname. For
+ FIXME: In most (all?) cases the shared object file name recorded in
+ the dynamic linkage tables will be a fully qualified pathname. For
cases where it isn't, do we really mimic the systems search
mechanism correctly in the below code (particularly the tilde
- expansion stuff?).
- */
+ expansion stuff?). */
static int
solib_map_sections (struct so_list *so)
return 0;
/* Leave bfd open, core_xfer_memory and "info files" need it. */
- so->abfd = gdb_bfd_ref (abfd);
+ so->abfd = abfd;
/* copy full path name into so_name, so that later symbol_file_add
- can find it */
+ can find it. */
if (strlen (bfd_get_filename (abfd)) >= SO_NAME_MAX_PATH_SIZE)
error (_("Shared library file name is too long."));
strcpy (so->so_name, bfd_get_filename (abfd));
{
/* Relocate the section binding addresses as recorded in the shared
object's file by the base address to which the object was actually
- mapped. */
+ mapped. */
ops->relocate_section_addresses (so, p);
/* If the target didn't provide information about the address
static void
free_so_symbols (struct so_list *so)
{
- char *bfd_filename = 0;
-
if (so->sections)
{
xfree (so->sections);
strcpy (so->so_name, so->so_original_name);
}
-/* LOCAL FUNCTION
-
- free_so --- free a `struct so_list' object
-
- SYNOPSIS
-
- void free_so (struct so_list *so)
-
- DESCRIPTION
-
- Free the storage associated with the `struct so_list' object SO.
- If we have opened a BFD for SO, close it.
+/* Free the storage associated with the `struct so_list' object SO.
+ If we have opened a BFD for SO, close it.
The caller is responsible for removing SO from whatever list it is
a member of. If we have placed SO's sections in some target's
{
volatile struct gdb_exception e;
+ flags |= current_inferior ()->symfile_flags;
+
TRY_CATCH (e, RETURN_MASK_ERROR)
{
struct section_addr_info *sap;
/* Have we already loaded this shared object? */
ALL_OBJFILES (so->objfile)
{
- if (strcmp (so->objfile->name, so->so_name) == 0)
+ if (filename_cmp (so->objfile->name, so->so_name) == 0
+ && so->objfile->addr_low == so->addr_low)
break;
}
if (so->objfile != NULL)
sap = build_section_addr_info_from_section_table (so->sections,
so->sections_end);
so->objfile = symbol_file_add_from_bfd (so->abfd,
- flags, sap, OBJF_SHARED);
+ flags, sap, OBJF_SHARED,
+ NULL);
+ so->objfile->addr_low = so->addr_low;
free_section_addr_info (sap);
}
if (e.reason < 0)
- {
- if (from_tty)
- exception_fprintf
- (gdb_stderr, e,
- _("Error while reading shared library symbols:\n"));
- }
+ exception_fprintf (gdb_stderr, e, _("Error while reading shared"
+ " library symbols for %s:\n"),
+ so->so_name);
else
{
if (from_tty || info_verbose)
return 0;
}
-/* LOCAL FUNCTION
+/* Return 1 if KNOWN->objfile is used by any other so_list object in the
+ SO_LIST_HEAD list. Return 0 otherwise. */
- update_solib_list --- synchronize GDB's shared object list with inferior's
+static int
+solib_used (const struct so_list *const known)
+{
+ const struct so_list *pivot;
- SYNOPSIS
+ for (pivot = so_list_head; pivot != NULL; pivot = pivot->next)
+ if (pivot != known && pivot->objfile == known->objfile)
+ return 1;
+ return 0;
+}
- void update_solib_list (int from_tty, struct target_ops *TARGET)
+/* Synchronize GDB's shared object list with inferior's.
Extract the list of currently loaded shared objects from the
inferior, and compare it with the list of shared objects currently
}
else
{
- if (! strcmp (gdb->so_original_name, i->so_original_name))
+ if (! filename_cmp (gdb->so_original_name, i->so_original_name))
break;
}
unloaded before we remove it from GDB's tables. */
observer_notify_solib_unloaded (gdb);
+ VEC_safe_push (char_ptr, current_program_space->deleted_solibs,
+ xstrdup (gdb->so_name));
+
*gdb_link = gdb->next;
/* Unless the user loaded it explicitly, free SO's objfile. */
- if (gdb->objfile && ! (gdb->objfile->flags & OBJF_USERLOADED))
+ if (gdb->objfile && ! (gdb->objfile->flags & OBJF_USERLOADED)
+ && !solib_used (gdb))
free_objfile (gdb->objfile);
/* Some targets' section tables might be referring to
volatile struct gdb_exception e;
i->pspace = current_program_space;
+ VEC_safe_push (so_list_ptr, current_program_space->added_solibs, i);
TRY_CATCH (e, RETURN_MASK_ERROR)
{
}
if (e.reason < 0)
- exception_fprintf (gdb_stderr, e, _("\
-Error while mapping shared library sections:\n"));
+ exception_fprintf (gdb_stderr, e,
+ _("Error while mapping shared "
+ "library sections:\n"));
/* Notify any observer that the shared object has been
loaded now that we've added it to GDB's tables. */
stand out well. */
if (not_found == 1)
- warning (_("\
-Could not load shared library symbols for %s.\n\
-Do you need \"set solib-search-path\" or \"set sysroot\"?"),
+ warning (_("Could not load shared library symbols for %s.\n"
+ "Do you need \"set solib-search-path\" "
+ "or \"set sysroot\"?"),
not_found_filename);
else if (not_found > 1)
warning (_("\
return libpthread_name_p (so->so_name);
}
-/* GLOBAL FUNCTION
-
- solib_add -- read in symbol info for newly added shared libraries
-
- SYNOPSIS
-
- void solib_add (char *pattern, int from_tty, struct target_ops
- *TARGET, int readsyms)
-
- DESCRIPTION
-
- Read in symbolic information for any shared objects whose names
+/* Read in symbolic information for any shared objects whose names
match PATTERN. (If we've already read a shared object's symbol
info, leave it alone.) If PATTERN is zero, read them all.
FROM_TTY and TARGET are as described for update_solib_list, above. */
void
-solib_add (char *pattern, int from_tty, struct target_ops *target, int readsyms)
+solib_add (char *pattern, int from_tty,
+ struct target_ops *target, int readsyms)
{
struct so_list *gdb;
+ current_program_space->solib_add_generation++;
+
if (pattern)
{
char *re_err = re_comp (pattern);
}
}
-
-/*
-
- LOCAL FUNCTION
-
- info_sharedlibrary_command -- code for "info sharedlibrary"
-
- SYNOPSIS
-
- static void info_sharedlibrary_command ()
-
- DESCRIPTION
-
- Walk through the shared library list and print information
- about each attached library matching PATTERN. If PATTERN is elided,
- print them all.
- */
+/* Implement the "info sharedlibrary" command. Walk through the
+ shared library list and print information about each attached
+ library matching PATTERN. If PATTERN is elided, print them
+ all. */
static void
info_sharedlibrary_command (char *pattern, int from_tty)
{
struct so_list *so = NULL; /* link map state variable */
- int header_done = 0;
int so_missing_debug_info = 0;
int addr_width;
int nr_libs;
struct cleanup *table_cleanup;
struct gdbarch *gdbarch = target_gdbarch;
+ struct ui_out *uiout = current_uiout;
if (pattern)
{
{
if (so_missing_debug_info)
ui_out_message (uiout, 0,
- _("(*): Shared library is missing debugging information.\n"));
+ _("(*): Shared library is missing "
+ "debugging information.\n"));
}
}
return 0;
}
-/*
-
- GLOBAL FUNCTION
-
- solib_name_from_address -- if an address is in a shared lib, return
- its name.
+/* If ADDRESS is in a shared lib in program space PSPACE, return its
+ name.
- SYNOPSIS
-
- char * solib_name_from_address (CORE_ADDR address)
-
- DESCRIPTION
-
- Provides a hook for other gdb routines to discover whether or
- not a particular address is within the mapped address space of
- a shared library.
+ Provides a hook for other gdb routines to discover whether or not a
+ particular address is within the mapped address space of a shared
+ library.
For example, this routine is called at one point to disable
breakpoints which are in shared libraries that are not currently
- mapped in.
- */
+ mapped in. */
char *
solib_name_from_address (struct program_space *pspace, CORE_ADDR address)
while (so_list_head)
{
struct so_list *so = so_list_head;
+
so_list_head = so->next;
observer_notify_solib_unloaded (so);
if (so->abfd)
ops->clear_solib ();
}
-/* GLOBAL FUNCTION
-
- solib_create_inferior_hook -- shared library startup support
-
- SYNOPSIS
-
- void solib_create_inferior_hook (int from_tty)
-
- DESCRIPTION
-
- When gdb starts up the inferior, it nurses it along (through the
- shell) until it is ready to execute it's first instruction. At this
- point, this function gets called via expansion of the macro
- SOLIB_CREATE_INFERIOR_HOOK. */
+/* Shared library startup support. When GDB starts up the inferior,
+ it nurses it along (through the shell) until it is ready to execute
+ its first instruction. At this point, this function gets
+ called. */
void
solib_create_inferior_hook (int from_tty)
{
struct target_so_ops *ops = solib_ops (target_gdbarch);
+
ops->solib_create_inferior_hook (from_tty);
}
-/* GLOBAL FUNCTION
-
- in_solib_dynsym_resolve_code -- check to see if an address is in
- dynamic loader's dynamic symbol
- resolution code
-
- SYNOPSIS
-
- int in_solib_dynsym_resolve_code (CORE_ADDR pc)
-
- DESCRIPTION
-
- Determine if PC is in the dynamic linker's symbol resolution
- code. Return 1 if so, 0 otherwise.
-*/
+/* Check to see if an address is in the dynamic loader's dynamic
+ symbol resolution code. Return 1 if so, 0 otherwise. */
int
in_solib_dynsym_resolve_code (CORE_ADDR pc)
{
struct target_so_ops *ops = solib_ops (target_gdbarch);
+
return ops->in_dynsym_resolve_code (pc);
}
-/*
-
- LOCAL FUNCTION
-
- sharedlibrary_command -- handle command to explicitly add library
-
- SYNOPSIS
-
- static void sharedlibrary_command (char *args, int from_tty)
-
- DESCRIPTION
-
- */
+/* Implements the "sharedlibrary" command. */
static void
sharedlibrary_command (char *args, int from_tty)
solib_add (args, from_tty, (struct target_ops *) 0, 1);
}
-/* LOCAL FUNCTION
-
- no_shared_libraries -- handle command to explicitly discard symbols
- from shared libraries.
-
- DESCRIPTION
-
- Implements the command "nosharedlibrary", which discards symbols
+/* Implements the command "nosharedlibrary", which discards symbols
that have been auto-loaded from shared libraries. Symbols from
shared libraries that were added by explicit request of the user
are not discarded. Also called from remote.c. */
{
char *filename, *found_pathname = NULL;
bfd *abfd;
- int scratch_chan;
int was_loaded = so->symbols_loaded;
const int flags =
SYMFILE_DEFER_BP_RESET | (from_tty ? SYMFILE_VERBOSE : 0);
filename = tilde_expand (so->so_original_name);
+ make_cleanup (xfree, filename);
abfd = solib_bfd_open (filename);
if (abfd != NULL)
{
found_pathname = xstrdup (bfd_get_filename (abfd));
make_cleanup (xfree, found_pathname);
- gdb_bfd_close_or_warn (abfd);
+ gdb_bfd_unref (abfd);
}
/* If this shared library is no longer associated with its previous
symbol file, close that. */
if ((found_pathname == NULL && was_loaded)
|| (found_pathname != NULL
- && strcmp (found_pathname, so->so_name) != 0))
+ && filename_cmp (found_pathname, so->so_name) != 0))
{
- if (so->objfile && ! (so->objfile->flags & OBJF_USERLOADED))
+ if (so->objfile && ! (so->objfile->flags & OBJF_USERLOADED)
+ && !solib_used (so))
free_objfile (so->objfile);
remove_target_sections (so->abfd);
free_so_symbols (so);
file, open it. */
if (found_pathname != NULL
&& (!was_loaded
- || strcmp (found_pathname, so->so_name) != 0))
+ || filename_cmp (found_pathname, so->so_name) != 0))
{
volatile struct gdb_exception e;
solib_map_sections (so);
if (e.reason < 0)
- exception_fprintf (gdb_stderr, e, _("\
-Error while mapping shared library sections:\n"));
+ exception_fprintf (gdb_stderr, e,
+ _("Error while mapping "
+ "shared library sections:\n"));
else if (auto_solib_add || was_loaded || libpthread_solib_p (so))
solib_read_symbols (so, flags);
}
ops = solib_ops (target_gdbarch);
- /* Creating inferior hooks here has two purposes. First, if we reload
+ /* Creating inferior hooks here has two purposes. First, if we reload
shared libraries then the address of solib breakpoint we've computed
previously might be no longer valid. For example, if we forgot to set
solib-absolute-prefix and are setting it right now, then the previous
return NULL;
}
+/* Lookup the value for a specific symbol from dynamic symbol table. Look
+ up symbol from ABFD. MATCH_SYM is a callback function to determine
+ whether to pick up a symbol. DATA is the input of this callback
+ function. Return NULL if symbol is not found. */
+
+CORE_ADDR
+gdb_bfd_lookup_symbol_from_symtab (bfd *abfd,
+ int (*match_sym) (asymbol *, void *),
+ void *data)
+{
+ long storage_needed = bfd_get_symtab_upper_bound (abfd);
+ CORE_ADDR symaddr = 0;
+
+ if (storage_needed > 0)
+ {
+ unsigned int i;
+
+ asymbol **symbol_table = (asymbol **) xmalloc (storage_needed);
+ struct cleanup *back_to = make_cleanup (xfree, symbol_table);
+ unsigned int number_of_symbols =
+ bfd_canonicalize_symtab (abfd, symbol_table);
+
+ for (i = 0; i < number_of_symbols; i++)
+ {
+ asymbol *sym = *symbol_table++;
+
+ if (match_sym (sym, data))
+ {
+ /* BFD symbols are section relative. */
+ symaddr = sym->value + sym->section->vma;
+ break;
+ }
+ }
+ do_cleanups (back_to);
+ }
+
+ return symaddr;
+}
+
+/* Lookup the value for a specific symbol from symbol table. Look up symbol
+ from ABFD. MATCH_SYM is a callback function to determine whether to pick
+ up a symbol. DATA is the input of this callback function. Return NULL
+ if symbol is not found. */
+
+static CORE_ADDR
+bfd_lookup_symbol_from_dyn_symtab (bfd *abfd,
+ int (*match_sym) (asymbol *, void *),
+ void *data)
+{
+ long storage_needed = bfd_get_dynamic_symtab_upper_bound (abfd);
+ CORE_ADDR symaddr = 0;
+
+ if (storage_needed > 0)
+ {
+ unsigned int i;
+ asymbol **symbol_table = (asymbol **) xmalloc (storage_needed);
+ struct cleanup *back_to = make_cleanup (xfree, symbol_table);
+ unsigned int number_of_symbols =
+ bfd_canonicalize_dynamic_symtab (abfd, symbol_table);
+
+ for (i = 0; i < number_of_symbols; i++)
+ {
+ asymbol *sym = *symbol_table++;
+
+ if (match_sym (sym, data))
+ {
+ /* BFD symbols are section relative. */
+ symaddr = sym->value + sym->section->vma;
+ break;
+ }
+ }
+ do_cleanups (back_to);
+ }
+ return symaddr;
+}
+
+/* Lookup the value for a specific symbol from symbol table and dynamic
+ symbol table. Look up symbol from ABFD. MATCH_SYM is a callback
+ function to determine whether to pick up a symbol. DATA is the
+ input of this callback function. Return NULL if symbol is not
+ found. */
+
+CORE_ADDR
+gdb_bfd_lookup_symbol (bfd *abfd,
+ int (*match_sym) (asymbol *, void *),
+ void *data)
+{
+ CORE_ADDR symaddr = gdb_bfd_lookup_symbol_from_symtab (abfd, match_sym, data);
+
+ /* On FreeBSD, the dynamic linker is stripped by default. So we'll
+ have to check the dynamic string table too. */
+ if (symaddr == 0)
+ symaddr = bfd_lookup_symbol_from_dyn_symtab (abfd, match_sym, data);
+
+ return symaddr;
+}
extern initialize_file_ftype _initialize_solib; /* -Wmissing-prototypes */
void
_initialize_solib (void)
{
- struct cmd_list_element *c;
-
solib_data = gdbarch_data_register_pre_init (solib_init);
add_com ("sharedlibrary", class_files, sharedlibrary_command,
If \"on\", symbols from all shared object libraries will be loaded\n\
automatically when the inferior begins execution, when the dynamic linker\n\
informs gdb that a new library has been loaded, or when attaching to the\n\
-inferior. Otherwise, symbols must be loaded manually, using `sharedlibrary'."),
+inferior. Otherwise, symbols must be loaded manually, using \
+`sharedlibrary'."),
NULL,
show_auto_solib_add,
&setlist, &showlist);
add_setshow_optional_filename_cmd ("solib-search-path", class_support,
&solib_search_path, _("\
-Set the search path for loading non-absolute shared library symbol files."), _("\
-Show the search path for loading non-absolute shared library symbol files."), _("\
-This takes precedence over the environment variables PATH and LD_LIBRARY_PATH."),
+Set the search path for loading non-absolute shared library symbol files."),
+ _("\
+Show the search path for loading non-absolute shared library symbol files."),
+ _("\
+This takes precedence over the environment variables \
+PATH and LD_LIBRARY_PATH."),
reload_shared_libraries,
show_solib_search_path,
&setlist, &showlist);
projects / deliverable / binutils-gdb.git / blobdiff