/* Handle shared libraries for GDB, the GNU Debugger.
- Copyright (C) 1990-2013 Free Software Foundation, Inc.
+ Copyright (C) 1990-2016 Free Software Foundation, Inc.
This file is part of GDB.
#include <sys/types.h>
#include <fcntl.h>
-#include "gdb_string.h"
#include "symtab.h"
#include "bfd.h"
#include "symfile.h"
#include "objfiles.h"
-#include "exceptions.h"
#include "gdbcore.h"
#include "command.h"
#include "target.h"
static const struct target_so_ops *
solib_ops (struct gdbarch *gdbarch)
{
- const struct target_so_ops **ops = gdbarch_data (gdbarch, solib_data);
+ const struct target_so_ops **ops
+ = (const struct target_so_ops **) gdbarch_data (gdbarch, solib_data);
return *ops;
}
void
set_solib_ops (struct gdbarch *gdbarch, const struct target_so_ops *new_ops)
{
- const struct target_so_ops **ops = gdbarch_data (gdbarch, solib_data);
+ const struct target_so_ops **ops
+ = (const struct target_so_ops **) gdbarch_data (gdbarch, solib_data);
*ops = new_ops;
}
# define DOS_BASED_FILE_SYSTEM 0
#endif
-/* 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.
+/* Return the full pathname of a binary file (the main executable
+ or a shared library file), or NULL if not found. The returned
+ pathname is malloc'ed and must be freed by the caller. If FD
+ is non-NULL, *FD is set to either -1 or an open file handle for
+ the binary file.
Global variable GDB_SYSROOT is used as a prefix directory
- to search for shared libraries if they have an absolute path.
+ to search for binary files if they have an absolute path.
+ If GDB_SYSROOT starts with "target:" and target filesystem
+ is the local filesystem then the "target:" prefix will be
+ stripped before the search starts. This ensures that the
+ same search algorithm is used for local files regardless of
+ whether a "target:" prefix was used.
Global variable SOLIB_SEARCH_PATH is used as a prefix directory
(or set of directories, as in LD_LIBRARY_PATH) to search for all
- shared libraries if not found in GDB_SYSROOT.
+ shared libraries if not found in either the sysroot (if set) or
+ the local filesystem. SOLIB_SEARCH_PATH is not used when searching
+ for the main executable.
Search algorithm:
- * If there is a gdb_sysroot and path is absolute:
- * Search for gdb_sysroot/path.
+ * If a sysroot is set and path is absolute:
+ * Search for sysroot/path.
* else
* Look for it literally (unmodified).
- * Look in SOLIB_SEARCH_PATH.
- * If available, use target defined search function.
- * If gdb_sysroot is NOT set, perform the following two searches:
+ * If IS_SOLIB is non-zero:
+ * Look in SOLIB_SEARCH_PATH.
+ * If available, use target defined search function.
+ * If NO sysroot is set, perform the following two searches:
* Look in inferior's $PATH.
- * Look in inferior's $LD_LIBRARY_PATH.
+ * If IS_SOLIB is non-zero:
+ * 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.
+ * machines since a sysroot will almost always be set.
*/
-char *
-solib_find (char *in_pathname, int *fd)
+static char *
+solib_find_1 (char *in_pathname, int *fd, int is_solib)
{
const struct target_so_ops *ops = solib_ops (target_gdbarch ());
int found_file = -1;
char *temp_pathname = NULL;
- 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--;
-
- if (*p == '.')
- {
- char *new_pathname;
-
- new_pathname = alloca (p - in_pathname + 1
- + strlen (solib_symbols_extension) + 1);
- memcpy (new_pathname, in_pathname, p - in_pathname + 1);
- strcpy (new_pathname + (p - in_pathname) + 1,
- solib_symbols_extension);
-
- in_pathname = new_pathname;
- }
- }
-
- gdb_sysroot_is_empty = (gdb_sysroot == NULL || *gdb_sysroot == 0);
-
- if (!gdb_sysroot_is_empty)
+ char *sysroot = gdb_sysroot;
+ int prefix_len, orig_prefix_len;
+
+ /* If the absolute prefix starts with "target:" but the filesystem
+ accessed by the target_fileio_* methods is the local filesystem
+ then we strip the "target:" prefix now and work with the local
+ filesystem. This ensures that the same search algorithm is used
+ for all local files regardless of whether a "target:" prefix was
+ used. */
+ if (is_target_filename (sysroot) && target_filesystem_is_local ())
+ sysroot += strlen (TARGET_SYSROOT_PREFIX);
+
+ /* Strip any trailing slashes from the absolute prefix. */
+ prefix_len = orig_prefix_len = strlen (sysroot);
+
+ while (prefix_len > 0 && IS_DIR_SEPARATOR (sysroot[prefix_len - 1]))
+ prefix_len--;
+
+ if (prefix_len == 0)
+ sysroot = NULL;
+ else if (prefix_len != orig_prefix_len)
{
- int prefix_len = strlen (gdb_sysroot);
-
- /* Remove trailing slashes from absolute prefix. */
- while (prefix_len > 0
- && IS_DIR_SEPARATOR (gdb_sysroot[prefix_len - 1]))
- prefix_len--;
-
- sysroot = savestring (gdb_sysroot, prefix_len);
+ sysroot = savestring (sysroot, prefix_len);
make_cleanup (xfree, sysroot);
}
char *p;
/* Avoid clobbering our input. */
- p = alloca (strlen (in_pathname) + 1);
+ p = (char *) alloca (strlen (in_pathname) + 1);
strcpy (p, in_pathname);
in_pathname = p;
3rd attempt, c:/foo/bar.dll ==> /sysroot/foo/bar.dll
*/
- if (!IS_TARGET_ABSOLUTE_PATH (fskind, in_pathname) || gdb_sysroot_is_empty)
+ if (!IS_TARGET_ABSOLUTE_PATH (fskind, in_pathname) || sysroot == NULL)
temp_pathname = xstrdup (in_pathname);
else
{
int need_dir_separator;
- need_dir_separator = (!IS_DIR_SEPARATOR (in_pathname[0])
- && !HAS_TARGET_DRIVE_SPEC (fskind, in_pathname));
+ /* Concatenate the sysroot and the target reported filename. We
+ may need to glue them with a directory separator. Cases to
+ consider:
+
+ | sysroot | separator | in_pathname |
+ |-----------------+-----------+----------------|
+ | /some/dir | / | c:/foo/bar.dll |
+ | /some/dir | | /foo/bar.dll |
+ | target: | | c:/foo/bar.dll |
+ | target: | | /foo/bar.dll |
+ | target:some/dir | / | c:/foo/bar.dll |
+ | target:some/dir | | /foo/bar.dll |
+
+ IOW, we don't need to add a separator if IN_PATHNAME already
+ has one, or when the the sysroot is exactly "target:".
+ There's no need to check for drive spec explicitly, as we only
+ get here if IN_PATHNAME is considered an absolute path. */
+ need_dir_separator = !(IS_DIR_SEPARATOR (in_pathname[0])
+ || strcmp (TARGET_SYSROOT_PREFIX, sysroot) == 0);
/* Cat the prefixed pathname together. */
temp_pathname = concat (sysroot,
in_pathname, (char *) NULL);
}
- /* Handle remote files. */
- if (remote_filename_p (temp_pathname))
+ /* Handle files to be accessed via the target. */
+ if (is_target_filename (temp_pathname))
{
- *fd = -1;
+ if (fd != NULL)
+ *fd = -1;
do_cleanups (old_chain);
return temp_pathname;
}
c:/foo/bar.dll ==> /sysroot/c/foo/bar.dll. */
if (found_file < 0
- && !gdb_sysroot_is_empty
+ && sysroot != NULL
&& HAS_TARGET_DRIVE_SPEC (fskind, in_pathname))
{
int need_dir_separator = !IS_DIR_SEPARATOR (in_pathname[2]);
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,
+ /* If not found, and we're looking for a solib, search the
+ solib_search_path (if any). */
+ if (is_solib && found_file < 0 && solib_search_path != NULL)
+ found_file = openp (solib_search_path,
+ OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH,
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,
+ /* If not found, and we're looking for a solib, 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 (is_solib && found_file < 0 && solib_search_path != NULL)
+ found_file = openp (solib_search_path,
+ OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH,
target_lbasename (fskind, in_pathname),
O_RDONLY | O_BINARY, &temp_pathname);
- /* If not found, try to use target supplied solib search method. */
- if (found_file < 0 && ops->find_and_open_solib)
+ /* If not found, and we're looking for a solib, try to use target
+ supplied solib search method. */
+ if (is_solib && 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 (found_file < 0 && gdb_sysroot_is_empty)
+ if (found_file < 0 && sysroot == NULL)
found_file = openp (get_in_environ (current_inferior ()->environment,
"PATH"),
- OPF_TRY_CWD_FIRST, in_pathname, O_RDONLY | O_BINARY,
- &temp_pathname);
+ OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, in_pathname,
+ O_RDONLY | O_BINARY, &temp_pathname);
- /* If not found, next search the inferior's $LD_LIBRARY_PATH
- environment variable. */
- if (found_file < 0 && gdb_sysroot_is_empty)
+ /* If not found, and we're looking for a solib, next search the
+ inferior's $LD_LIBRARY_PATH environment variable. */
+ if (is_solib && found_file < 0 && sysroot == NULL)
found_file = openp (get_in_environ (current_inferior ()->environment,
"LD_LIBRARY_PATH"),
- OPF_TRY_CWD_FIRST, in_pathname, O_RDONLY | O_BINARY,
- &temp_pathname);
+ OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, in_pathname,
+ O_RDONLY | O_BINARY, &temp_pathname);
+
+ if (fd == NULL)
+ {
+ if (found_file >= 0)
+ close (found_file);
+ }
+ else
+ *fd = found_file;
- *fd = found_file;
return temp_pathname;
}
+/* Return the full pathname of the main executable, or NULL if not
+ found. The returned pathname is malloc'ed and must be freed by
+ the caller. If FD is non-NULL, *FD is set to either -1 or an open
+ file handle for the main executable. */
+
+char *
+exec_file_find (char *in_pathname, int *fd)
+{
+ char *result;
+ const char *fskind = effective_target_file_system_kind ();
+
+ if (in_pathname == NULL)
+ return NULL;
+
+ if (*gdb_sysroot != '\0' && IS_TARGET_ABSOLUTE_PATH (fskind, in_pathname))
+ {
+ result = solib_find_1 (in_pathname, fd, 0);
+
+ if (result == NULL && fskind == file_system_kind_dos_based)
+ {
+ char *new_pathname;
+
+ new_pathname = (char *) alloca (strlen (in_pathname) + 5);
+ strcpy (new_pathname, in_pathname);
+ strcat (new_pathname, ".exe");
+
+ result = solib_find_1 (new_pathname, fd, 0);
+ }
+ }
+ else
+ {
+ /* It's possible we don't have a full path, but rather just a
+ filename. Some targets, such as HP-UX, don't provide the
+ full path, sigh.
+
+ Attempt to qualify the filename against the source path.
+ (If that fails, we'll just fall back on the original
+ filename. Not much more we can do...) */
+
+ if (!source_full_path_of (in_pathname, &result))
+ result = xstrdup (in_pathname);
+ if (fd != NULL)
+ *fd = -1;
+ }
+
+ return result;
+}
+
+/* Return the full pathname of a shared library file, or NULL if not
+ found. The returned pathname is malloc'ed and must be freed by
+ the caller. If FD is non-NULL, *FD is set to either -1 or an open
+ file handle for the shared library.
+
+ The search algorithm used is described in solib_find_1's comment
+ above. */
+
+char *
+solib_find (char *in_pathname, int *fd)
+{
+ const char *solib_symbols_extension
+ = gdbarch_solib_symbols_extension (target_gdbarch ());
+
+ /* If solib_symbols_extension is set, replace the file's
+ extension. */
+ if (solib_symbols_extension != NULL)
+ {
+ char *p = in_pathname + strlen (in_pathname);
+
+ while (p > in_pathname && *p != '.')
+ p--;
+
+ if (*p == '.')
+ {
+ char *new_pathname;
+
+ new_pathname
+ = (char *) alloca (p - in_pathname + 1
+ + strlen (solib_symbols_extension) + 1);
+ memcpy (new_pathname, in_pathname, p - in_pathname + 1);
+ strcpy (new_pathname + (p - in_pathname) + 1,
+ solib_symbols_extension);
+
+ in_pathname = new_pathname;
+ }
+ }
+
+ return solib_find_1 (in_pathname, fd, 1);
+}
+
/* Open and return a BFD for the shared library PATHNAME. If FD is not -1,
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.
bfd *
solib_bfd_fopen (char *pathname, int fd)
{
- bfd *abfd;
+ bfd *abfd = gdb_bfd_open (pathname, gnutarget, fd);
- if (remote_filename_p (pathname))
- {
- gdb_assert (fd == -1);
- abfd = remote_bfd_open (pathname, gnutarget);
- }
- else
- {
- abfd = gdb_bfd_open (pathname, gnutarget, fd);
-
- if (abfd)
- bfd_set_cacheable (abfd, 1);
- }
+ if (abfd != NULL && !gdb_bfd_has_target_filename (abfd))
+ bfd_set_cacheable (abfd, 1);
if (!abfd)
{
/* Leave bfd open, core_xfer_memory and "info files" need it. */
so->abfd = abfd;
+ /* Copy the full path name into so_name, allowing symbol_file_add
+ to find it later. This also affects the =library-loaded GDB/MI
+ event, and in particular the part of that notification providing
+ the library's host-side path. If we let the target dictate
+ that objfile's path, and the target is different from the host,
+ GDB/MI will not provide the correct host-side path. */
+ 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));
+
if (build_section_table (abfd, &so->sections, &so->sections_end))
{
error (_("Can't find the file sections in `%s': %s"),
loaded. */
int
-solib_read_symbols (struct so_list *so, int flags)
+solib_read_symbols (struct so_list *so, symfile_add_flags flags)
{
- const int from_tty = flags & SYMFILE_VERBOSE;
-
if (so->symbols_loaded)
{
/* If needed, we've already warned in our caller. */
}
else
{
- volatile struct gdb_exception e;
flags |= current_inferior ()->symfile_flags;
- TRY_CATCH (e, RETURN_MASK_ERROR)
+ TRY
{
struct section_addr_info *sap;
/* Have we already loaded this shared object? */
ALL_OBJFILES (so->objfile)
{
- if (filename_cmp (so->objfile->name, so->so_name) == 0
+ if (filename_cmp (objfile_name (so->objfile), so->so_name) == 0
&& so->objfile->addr_low == so->addr_low)
break;
}
- if (so->objfile != NULL)
- break;
-
- 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,
- NULL);
- so->objfile->addr_low = so->addr_low;
- free_section_addr_info (sap);
- }
+ 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, so->so_name,
+ flags, sap, OBJF_SHARED,
+ NULL);
+ so->objfile->addr_low = so->addr_low;
+ free_section_addr_info (sap);
+ }
- if (e.reason < 0)
- exception_fprintf (gdb_stderr, e, _("Error while reading shared"
- " library symbols for %s:\n"),
- so->so_name);
- else
- {
- if (from_tty || info_verbose)
- printf_unfiltered (_("Loaded symbols for %s\n"), so->so_name);
so->symbols_loaded = 1;
}
+ CATCH (e, RETURN_MASK_ERROR)
+ {
+ exception_fprintf (gdb_stderr, e, _("Error while reading shared"
+ " library symbols for %s:\n"),
+ so->so_name);
+ }
+ END_CATCH
+
return 1;
}
/* Some targets' section tables might be referring to
sections from so->abfd; remove them. */
- remove_target_sections (gdb, gdb->abfd);
+ remove_target_sections (gdb);
free_so (gdb);
gdb = *gdb_link;
/* Fill in the rest of each of the `struct so_list' nodes. */
for (i = inferior; i; i = i->next)
{
- 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)
+ TRY
{
/* Fill in the rest of the `struct so_list' node. */
if (!solib_map_sections (i))
}
}
- if (e.reason < 0)
- exception_fprintf (gdb_stderr, e,
- _("Error while mapping shared "
- "library sections:\n"));
+ CATCH (e, RETURN_MASK_ERROR)
+ {
+ exception_fprintf (gdb_stderr, e,
+ _("Error while mapping shared "
+ "library sections:\n"));
+ }
+ END_CATCH
/* Notify any observer that the shared object has been
loaded now that we've added it to GDB's tables. */
FROM_TTY and TARGET are as described for update_solib_list, above. */
void
-solib_add (char *pattern, int from_tty,
+solib_add (const char *pattern, int from_tty,
struct target_ops *target, int readsyms)
{
struct so_list *gdb;
+ if (print_symbol_loading_p (from_tty, 0, 0))
+ {
+ if (pattern != NULL)
+ {
+ printf_unfiltered (_("Loading symbols for shared libraries: %s\n"),
+ pattern);
+ }
+ else
+ printf_unfiltered (_("Loading symbols for shared libraries.\n"));
+ }
+
current_program_space->solib_add_generation++;
if (pattern)
{
int any_matches = 0;
int loaded_any_symbols = 0;
- const int flags =
- SYMFILE_DEFER_BP_RESET | (from_tty ? SYMFILE_VERBOSE : 0);
+ symfile_add_flags add_flags = SYMFILE_DEFER_BP_RESET;
+
+ if (from_tty)
+ add_flags |= SYMFILE_VERBOSE;
for (gdb = so_list_head; gdb; gdb = gdb->next)
if (! pattern || re_exec (gdb->so_name))
printf_unfiltered (_("Symbols already loaded for %s\n"),
gdb->so_name);
}
- else if (solib_read_symbols (gdb, flags))
+ else if (solib_read_symbols (gdb, add_flags))
loaded_any_symbols = 1;
}
}
if (loaded_any_symbols)
{
- const struct target_so_ops *ops = solib_ops (target_gdbarch ());
-
/* Getting new symbols may change our opinion about what is
frameless. */
reinit_frame_cache ();
-
- ops->special_symbol_handling ();
}
}
}
so_list_head = so->next;
observer_notify_solib_unloaded (so);
- if (so->abfd)
- remove_target_sections (so, so->abfd);
+ remove_target_sections (so);
free_so (so);
}
objfile_purge_solibs ();
}
+/* See solib.h. */
+
+void
+update_solib_breakpoints (void)
+{
+ const struct target_so_ops *ops = solib_ops (target_gdbarch ());
+
+ if (ops->update_breakpoints != NULL)
+ ops->update_breakpoints ();
+}
+
+/* See solib.h. */
+
+void
+handle_solib_event (void)
+{
+ const struct target_so_ops *ops = solib_ops (target_gdbarch ());
+
+ if (ops->handle_event != NULL)
+ ops->handle_event ();
+
+ clear_program_space_solib_cache (current_inferior ()->pspace);
+
+ /* Check for any newly added shared libraries if we're supposed to
+ be adding them automatically. Switch terminal for any messages
+ produced by breakpoint_re_set. */
+ target_terminal_ours_for_output ();
+ solib_add (NULL, 0, ¤t_target, auto_solib_add);
+ target_terminal_inferior ();
+}
+
/* Reload shared libraries, but avoid reloading the same symbol file
we already have loaded. */
struct so_list *so;
struct cleanup *old_chain = make_cleanup (null_cleanup, NULL);
+ if (print_symbol_loading_p (from_tty, 0, 0))
+ printf_unfiltered (_("Loading symbols for shared libraries.\n"));
+
for (so = so_list_head; so != NULL; so = so->next)
{
char *filename, *found_pathname = NULL;
bfd *abfd;
int was_loaded = so->symbols_loaded;
- const int flags =
- SYMFILE_DEFER_BP_RESET | (from_tty ? SYMFILE_VERBOSE : 0);
+ symfile_add_flags add_flags = SYMFILE_DEFER_BP_RESET;
+
+ if (from_tty)
+ add_flags |= SYMFILE_VERBOSE;
filename = tilde_expand (so->so_original_name);
make_cleanup (xfree, filename);
if (so->objfile && ! (so->objfile->flags & OBJF_USERLOADED)
&& !solib_used (so))
free_objfile (so->objfile);
- remove_target_sections (so, so->abfd);
+ remove_target_sections (so);
clear_so (so);
}
&& (!was_loaded
|| filename_cmp (found_pathname, so->so_name) != 0))
{
- volatile struct gdb_exception e;
+ int got_error = 0;
- TRY_CATCH (e, RETURN_MASK_ERROR)
- solib_map_sections (so);
+ TRY
+ {
+ solib_map_sections (so);
+ }
- if (e.reason < 0)
- 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);
+ CATCH (e, RETURN_MASK_ERROR)
+ {
+ exception_fprintf (gdb_stderr, e,
+ _("Error while mapping "
+ "shared library sections:\n"));
+ got_error = 1;
+ }
+ END_CATCH
+
+ if (!got_error
+ && (auto_solib_add || was_loaded || libpthread_solib_p (so)))
+ solib_read_symbols (so, add_flags);
}
}
structures that are now freed. Also, getting new symbols may
change our opinion about what is frameless. */
reinit_frame_cache ();
+}
+
+/* Wrapper for reload_shared_libraries that replaces "remote:"
+ at the start of gdb_sysroot with "target:". */
+
+static void
+gdb_sysroot_changed (char *ignored, int from_tty,
+ struct cmd_list_element *e)
+{
+ const char *old_prefix = "remote:";
+ const char *new_prefix = TARGET_SYSROOT_PREFIX;
+
+ if (startswith (gdb_sysroot, old_prefix))
+ {
+ static int warning_issued = 0;
- ops->special_symbol_handling ();
+ gdb_assert (strlen (old_prefix) == strlen (new_prefix));
+ memcpy (gdb_sysroot, new_prefix, strlen (new_prefix));
+
+ if (!warning_issued)
+ {
+ warning (_("\"%s\" is deprecated, use \"%s\" instead."),
+ old_prefix, new_prefix);
+ warning (_("sysroot set to \"%s\"."), gdb_sysroot);
+
+ warning_issued = 1;
+ }
+ }
+
+ reload_shared_libraries (ignored, from_tty, e);
}
static void
/* Handler for library-specific lookup of global symbol NAME in OBJFILE. Call
the library-specific handler if it is installed for the current target. */
-struct symbol *
-solib_global_lookup (const struct objfile *objfile,
+struct block_symbol
+solib_global_lookup (struct objfile *objfile,
const char *name,
const domain_enum domain)
{
if (ops->lookup_lib_global_symbol != NULL)
return ops->lookup_lib_global_symbol (objfile, name, domain);
- return NULL;
+ return (struct block_symbol) {NULL, NULL};
}
/* Lookup the value for a specific symbol from dynamic symbol table. Look
CORE_ADDR
gdb_bfd_lookup_symbol_from_symtab (bfd *abfd,
- int (*match_sym) (asymbol *, void *),
- void *data)
+ int (*match_sym) (const asymbol *,
+ const void *),
+ const void *data)
{
long storage_needed = bfd_get_symtab_upper_bound (abfd);
CORE_ADDR symaddr = 0;
if (match_sym (sym, data))
{
+ struct gdbarch *gdbarch = target_gdbarch ();
+ symaddr = sym->value;
+
+ /* Some ELF targets fiddle with addresses of symbols they
+ consider special. They use minimal symbols to do that
+ and this is needed for correct breakpoint placement,
+ but we do not have full data here to build a complete
+ minimal symbol, so just set the address and let the
+ targets cope with that. */
+ if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
+ && gdbarch_elf_make_msymbol_special_p (gdbarch))
+ {
+ struct minimal_symbol msym;
+
+ memset (&msym, 0, sizeof (msym));
+ SET_MSYMBOL_VALUE_ADDRESS (&msym, symaddr);
+ gdbarch_elf_make_msymbol_special (gdbarch, sym, &msym);
+ symaddr = MSYMBOL_VALUE_RAW_ADDRESS (&msym);
+ }
+
/* BFD symbols are section relative. */
- symaddr = sym->value + sym->section->vma;
+ symaddr += sym->section->vma;
break;
}
}
static CORE_ADDR
bfd_lookup_symbol_from_dyn_symtab (bfd *abfd,
- int (*match_sym) (asymbol *, void *),
- void *data)
+ int (*match_sym) (const asymbol *,
+ const void *),
+ const void *data)
{
long storage_needed = bfd_get_dynamic_symtab_upper_bound (abfd);
CORE_ADDR symaddr = 0;
CORE_ADDR
gdb_bfd_lookup_symbol (bfd *abfd,
- int (*match_sym) (asymbol *, void *),
- void *data)
+ int (*match_sym) (const asymbol *, const void *),
+ const void *data)
{
CORE_ADDR symaddr = gdb_bfd_lookup_symbol_from_symtab (abfd, match_sym, data);
return symaddr;
}
+/* SO_LIST_HEAD may contain user-loaded object files that can be removed
+ out-of-band by the user. So upon notification of free_objfile remove
+ all references to any user-loaded file that is about to be freed. */
+
+static void
+remove_user_added_objfile (struct objfile *objfile)
+{
+ struct so_list *so;
+
+ if (objfile != 0 && objfile->flags & OBJF_USERLOADED)
+ {
+ for (so = so_list_head; so != NULL; so = so->next)
+ if (so->objfile == objfile)
+ so->objfile = NULL;
+ }
+}
+
extern initialize_file_ftype _initialize_solib; /* -Wmissing-prototypes */
void
{
solib_data = gdbarch_data_register_pre_init (solib_init);
+ observer_attach_free_objfile (remove_user_added_objfile);
+
add_com ("sharedlibrary", class_files, sharedlibrary_command,
_("Load shared object library symbols for files matching REGEXP."));
add_info ("sharedlibrary", info_sharedlibrary_command,
_("Status of loaded shared object libraries."));
+ add_info_alias ("dll", "sharedlibrary", 1);
add_com ("nosharedlibrary", class_files, no_shared_libraries,
_("Unload all shared object library symbols."));
show_auto_solib_add,
&setlist, &showlist);
- add_setshow_filename_cmd ("sysroot", class_support,
- &gdb_sysroot, _("\
+ add_setshow_optional_filename_cmd ("sysroot", class_support,
+ &gdb_sysroot, _("\
Set an alternate system root."), _("\
Show the current system root."), _("\
The system root is used to load absolute shared library symbol files.\n\
For other (relative) files, you can add directories using\n\
`set solib-search-path'."),
- reload_shared_libraries,
- NULL,
- &setlist, &showlist);
+ gdb_sysroot_changed,
+ NULL,
+ &setlist, &showlist);
add_alias_cmd ("solib-absolute-prefix", "sysroot", class_support, 0,
&setlist);
projects / deliverable / binutils-gdb.git / blobdiff