/* Handle shared libraries for GDB, the GNU Debugger.
- Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- 2000, 2001
- Free Software Foundation, Inc.
+
+ Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
+ 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
This file is part of GDB.
#include "language.h"
#include "gdbcmd.h"
#include "completer.h"
+#include "filenames.h" /* for DOSish file names */
#include "solist.h"
{
int found_file = -1;
char *temp_pathname = NULL;
+ char *p = in_pathname;
+
+ while (*p && !IS_DIR_SEPARATOR (*p))
+ p++;
- if (strchr (in_pathname, SLASH_CHAR))
+ if (*p)
{
- if (! ROOTED_P (in_pathname) || solib_absolute_prefix == NULL)
+ if (! IS_ABSOLUTE_PATH (in_pathname) || solib_absolute_prefix == NULL)
temp_pathname = in_pathname;
else
{
/* Remove trailing slashes from absolute prefix. */
while (prefix_len > 0
- && SLASH_P (solib_absolute_prefix[prefix_len - 1]))
+ && IS_DIR_SEPARATOR (solib_absolute_prefix[prefix_len - 1]))
prefix_len--;
/* Cat the prefixed pathname together. */
found_file = open (temp_pathname, O_RDONLY, 0);
}
+ /* If the search in solib_absolute_prefix 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))
+ {
+ /* First, get rid of any drive letters etc. */
+ while (!IS_DIR_SEPARATOR (*in_pathname))
+ in_pathname++;
+
+ /* Next, get rid of all leading dir separators. */
+ while (IS_DIR_SEPARATOR (*in_pathname))
+ in_pathname++;
+ }
+
/* If not found, next search the solib_search_path (if any). */
if (found_file < 0 && solib_search_path != NULL)
found_file = openp (solib_search_path,
1, in_pathname, O_RDONLY, 0, &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,
+ 1, lbasename (in_pathname), O_RDONLY, 0,
+ &temp_pathname);
/* If not found, next search the inferior's $PATH environment variable. */
if (found_file < 0 && solib_search_path != NULL)
/* Leave bfd open, core_xfer_memory and "info files" need it. */
so->abfd = abfd;
- abfd->cacheable = true;
+ abfd->cacheable = 1;
/* copy full path name into so_name, so that later symbol_file_add
can find it */
catch_errors (solib_map_sections, i,
"Error while mapping shared library sections:\n",
RETURN_MASK_ALL);
- }
-
- /* If requested, add the shared objects' sections to the the
- TARGET's section table. */
- if (target)
- {
- int new_sections;
- /* Figure out how many sections we'll need to add in total. */
- new_sections = 0;
- for (i = inferior; i; i = i->next)
- new_sections += (i->sections_end - i->sections);
-
- if (new_sections > 0)
+ /* If requested, add the shared object's sections to the TARGET's
+ section table. Do this immediately after mapping the object so
+ that later nodes in the list can query this object, as is needed
+ in solib-osf.c. */
+ if (target)
{
- int space = target_resize_to_sections (target, new_sections);
-
- for (i = inferior; i; i = i->next)
+ int count = (i->sections_end - i->sections);
+ if (count > 0)
{
- int count = (i->sections_end - i->sections);
+ int space = target_resize_to_sections (target, count);
memcpy (target->to_sections + space,
i->sections,
count * sizeof (i->sections[0]));
- space += count;
}
}
}
SYNOPSIS
- void solib_add (char *pattern, int from_tty, struct target_ops *TARGET)
+ void solib_add (char *pattern, int from_tty, struct target_ops
+ *TARGET, int readsyms)
DESCRIPTION
match PATTERN. (If we've already read a shared object's symbol
info, leave it alone.) If PATTERN is zero, read them all.
+ If READSYMS is 0, defer reading symbolic information until later
+ but still do any needed low level processing.
+
FROM_TTY and TARGET are as described for update_solib_list, above. */
void
-solib_add (char *pattern, int from_tty, struct target_ops *target)
+solib_add (char *pattern, int from_tty, struct target_ops *target, int readsyms)
{
struct so_list *gdb;
printf_unfiltered ("Symbols already loaded for %s\n",
gdb->so_name);
}
- else
+ else if (readsyms)
{
if (catch_errors
(symbol_add_stub, gdb,
int header_done = 0;
int addr_width;
char *addr_fmt;
- int arch_size;
- if (exec_bfd == NULL)
- {
- printf_unfiltered ("No executable file.\n");
- return;
- }
-
- arch_size = bfd_get_arch_size (exec_bfd);
- /* Default to 32-bit in case of failure (non-elf). */
- if (arch_size == 32 || arch_size == -1)
+ if (TARGET_PTR_BIT == 32)
{
addr_width = 8 + 4;
addr_fmt = "08l";
}
- else if (arch_size == 64)
+ else if (TARGET_PTR_BIT == 64)
{
addr_width = 16 + 4;
addr_fmt = "016l";
else
{
internal_error (__FILE__, __LINE__,
- "bfd_get_arch_size() returned unknown size %d",
- arch_size);
+ "TARGET_PTR_BIT returned unknown size %d",
+ TARGET_PTR_BIT);
}
update_solib_list (from_tty, 0);
printf_unfiltered ("%-*s", addr_width,
so->textsection != NULL
- ? longest_local_hex_string_custom (
+ ? local_hex_string_custom (
(LONGEST) so->textsection->addr,
addr_fmt)
: "");
printf_unfiltered ("%-*s", addr_width,
so->textsection != NULL
- ? longest_local_hex_string_custom (
+ ? local_hex_string_custom (
(LONGEST) so->textsection->endaddr,
addr_fmt)
: "");
{
struct so_list *so = so_list_head;
so_list_head = so->next;
+ if (so->abfd)
+ remove_target_sections (so->abfd);
free_so (so);
}
sharedlibrary_command (char *args, int from_tty)
{
dont_repeat ();
- solib_add (args, from_tty, (struct target_ops *) 0);
+ 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
+ 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. */
+
+void
+no_shared_libraries (char *ignored, int from_tty)
+{
+ objfile_purge_solibs ();
+ do_clear_solib (NULL);
+}
void
_initialize_solib (void)
"Load shared object library symbols for files matching REGEXP.");
add_info ("sharedlibrary", info_sharedlibrary_command,
"Status of loaded shared object libraries.");
+ add_com ("nosharedlibrary", class_files, no_shared_libraries,
+ "Unload all shared object library symbols.");
add_show_from_set
- (add_set_cmd ("auto-solib-add", class_support, var_zinteger,
+ (add_set_cmd ("auto-solib-add", class_support, var_boolean,
(char *) &auto_solib_add,
"Set autoloading of shared library symbols.\n\
-If nonzero, symbols from all shared object libraries will be loaded\n\
-automatically when the inferior begins execution or when the dynamic linker\n\
-informs gdb that a new library has been loaded. Otherwise, symbols\n\
-must be loaded manually, using `sharedlibrary'.",
+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'.",
&setlist),
&showlist);
For other (relative) files, you can add values using `set solib-search-path'.",
&setlist);
add_show_from_set (c, &showlist);
- c->completer = filename_completer;
+ set_cmd_completer (c, filename_completer);
c = add_set_cmd ("solib-search-path", class_support, var_string,
(char *) &solib_search_path,
This takes precedence over the environment variables PATH and LD_LIBRARY_PATH.",
&setlist);
add_show_from_set (c, &showlist);
- c->completer = filename_completer;
+ set_cmd_completer (c, filename_completer);
}
projects / binutils.git / blobdiff