/* Shared library support for RS/6000 (xcoff) object files, for GDB.
- Copyright 1991, 1992 Free Software Foundation.
+ Copyright 1991, 1992, 1995, 1996, 1999, 2000, 2001
+ Free Software Foundation, Inc.
Contributed by IBM Corporation.
This file is part of GDB.
Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
-#if 0
-#include <sys/types.h>
-#include <sys/ldr.h>
-#endif
-
#include "defs.h"
#include "bfd.h"
#include "xcoffsolib.h"
#include "inferior.h"
-#include "command.h"
-
-/* Hook to relocate symbols at runtime. If gdb is build natively, this
- hook is initialized in by rs6000-nat.c. If not, it is currently left
- NULL and never called. */
-
-void (*xcoff_relocate_symtab_hook) PARAMS ((unsigned int)) = NULL;
-
-#ifdef SOLIB_SYMBOLS_MANUAL
-
-extern struct symtab *current_source_symtab;
-extern int current_source_line;
-
-/* The real work of adding a shared library file to the symtab and
- the section list. */
-
-void
-solib_add (arg_string, from_tty, target)
- char *arg_string;
- int from_tty;
- struct target_ops *target;
-{
- char *val;
- struct vmap *vp = vmap;
- struct objfile *obj;
- struct symtab *saved_symtab;
- int saved_line;
-
- int loaded = 0; /* true if any shared obj loaded */
- int matched = 0; /* true if any shared obj matched */
-
- if (arg_string == 0)
- re_comp (".");
- else if (val = (char *) re_comp (arg_string))
- {
- error ("Invalid regexp: %s", val);
- }
- if (!vp || !vp->nxt)
- return;
-
- /* save current symbol table and line number, in case they get changed
- in symbol loading process. */
-
- saved_symtab = current_source_symtab;
- saved_line = current_source_line;
-
- /* skip over the first vmap, it is the main program, always loaded. */
- vp = vp->nxt;
+#include "gdbcmd.h"
+#include "symfile.h"
+#include "frame.h"
+#include "gdb_regex.h"
- for (; vp; vp = vp->nxt)
- {
-
- if (re_exec (vp->name) || (*vp->member && re_exec (vp->member)))
- {
-
- matched = 1;
-
- /* if already loaded, continue with the next one. */
- if (vp->loaded)
- {
-
- printf_unfiltered ("%s%s%s%s: already loaded.\n",
- *vp->member ? "(" : "",
- vp->member,
- *vp->member ? ") " : "",
- vp->name);
- continue;
- }
- printf_unfiltered ("Loading %s%s%s%s...",
- *vp->member ? "(" : "",
- vp->member,
- *vp->member ? ") " : "",
- vp->name);
- gdb_flush (gdb_stdout);
-
- /* This is gross and doesn't work. If this code is re-enabled,
- just stick a objfile member into the struct vmap; that's the
- way solib.c (for SunOS/SVR4) does it. */
- obj = lookup_objfile_bfd (vp->bfd);
- if (!obj)
- {
- warning ("\nObj structure for the shared object not found. Loading failed.");
- continue;
- }
-
- syms_from_objfile (obj, 0, 0, 0);
- new_symfile_objfile (obj, 0, 0);
- vmap_symtab (vp, 0, 0);
- printf_unfiltered ("Done.\n");
- loaded = vp->loaded = 1;
- }
- }
- /* if any shared object is loaded, then misc_func_vector needs sorting. */
- if (loaded)
- {
-#if 0
- sort_misc_function_vector ();
-#endif
- current_source_symtab = saved_symtab;
- current_source_line = saved_line;
-
- /* Getting new symbols might change our opinion about what is frameless.
- Is this correct?? FIXME. */
-/* reinit_frame_cache(); */
- }
- else if (!matched)
- printf_unfiltered ("No matching shared object found.\n");
-}
-#endif /* SOLIB_SYMBOLS_MANUAL */
-
-/* Return the module name of a given text address. Note that returned buffer
- is not persistent. */
+/* If ADDR lies in a shared library, return its name.
+ Note that returned name points to static data whose content is overwritten
+ by each call. */
char *
-pc_load_segment_name (addr)
- CORE_ADDR addr;
+xcoff_solib_address (CORE_ADDR addr)
{
- static char buffer[BUFSIZ];
+ static char *buffer = NULL;
struct vmap *vp = vmap;
- buffer[0] = buffer[1] = '\0';
- for (; vp; vp = vp->nxt)
+ /* The first vmap entry is for the exec file. */
+
+ if (vp == NULL)
+ return NULL;
+ for (vp = vp->nxt; vp; vp = vp->nxt)
if (vp->tstart <= addr && addr < vp->tend)
{
- if (*vp->member)
- {
- buffer[0] = '(';
- strcat (&buffer[1], vp->member);
- strcat (buffer, ")");
- }
- strcat (buffer, vp->name);
+ xfree (buffer);
+ buffer = xstrprintf ("%s%s%s%s",
+ vp->name,
+ *vp->member ? "(" : "",
+ vp->member,
+ *vp->member ? ")" : "");
return buffer;
}
- return "(unknown load module)";
+ return NULL;
}
-static void solib_info PARAMS ((char *, int));
+static void solib_info (char *, int);
+static void sharedlibrary_command (char *pattern, int from_tty);
static void
-solib_info (args, from_tty)
- char *args;
- int from_tty;
+solib_info (char *args, int from_tty)
{
struct vmap *vp = vmap;
/* Check for new shared libraries loaded with load (). */
- if (xcoff_relocate_symtab_hook != NULL)
- (*xcoff_relocate_symtab_hook) (inferior_pid);
+ if (! ptid_equal (inferior_ptid, null_ptid))
+ xcoff_relocate_symtab (PIDGET (inferior_ptid));
if (vp == NULL || vp->nxt == NULL)
{
for (; vp != NULL; vp = vp->nxt)
{
- printf_unfiltered ("0x%08x-0x%08x 0x%08x-0x%08x %s %s%s%s%s\n",
- vp->tstart, vp->tend,
- vp->dstart, vp->dend,
+ printf_unfiltered ("0x%s-0x%s 0x%s-0x%s %s %s%s%s%s\n",
+ paddr (vp->tstart),paddr (vp->tend),
+ paddr (vp->dstart), paddr (vp->dend),
vp->loaded ? "Yes" : "No ",
+ vp->name,
*vp->member ? "(" : "",
vp->member,
- *vp->member ? ") " : "",
- vp->name);
+ *vp->member ? ")" : "");
}
}
-void
-sharedlibrary_command (args, from_tty)
- char *args;
- int from_tty;
+static void
+sharedlibrary_command (char *pattern, int from_tty)
{
dont_repeat ();
/* Check for new shared libraries loaded with load (). */
- if (xcoff_relocate_symtab_hook != NULL)
- (*xcoff_relocate_symtab_hook) (inferior_pid);
+ if (! ptid_equal (inferior_ptid, null_ptid))
+ xcoff_relocate_symtab (PIDGET (inferior_ptid));
+
+ if (pattern)
+ {
+ char *re_err = re_comp (pattern);
-#ifdef SOLIB_SYMBOLS_MANUAL
- solib_add (args, from_tty, (struct target_ops *) 0);
-#endif /* SOLIB_SYMBOLS_MANUAL */
+ if (re_err)
+ error ("Invalid regexp: %s", re_err);
+ }
+
+ /* Walk the list of currently loaded shared libraries, and read
+ symbols for any that match the pattern --- or any whose symbols
+ aren't already loaded, if no pattern was given. */
+ {
+ int any_matches = 0;
+ int loaded_any_symbols = 0;
+ struct vmap *vp = vmap;
+
+ if (!vp)
+ return;
+
+ /* skip over the first vmap, it is the main program, always loaded. */
+ for (vp = vp->nxt; vp; vp = vp->nxt)
+ if (! pattern
+ || re_exec (vp->name)
+ || (*vp->member && re_exec (vp->member)))
+ {
+ any_matches = 1;
+
+ if (vp->loaded)
+ {
+ if (from_tty)
+ printf_unfiltered ("Symbols already loaded for %s\n",
+ vp->name);
+ }
+ else
+ {
+ if (vmap_add_symbols (vp))
+ loaded_any_symbols = 1;
+ }
+ }
+
+ if (from_tty && pattern && ! any_matches)
+ printf_unfiltered
+ ("No loaded shared libraries match the pattern `%s'.\n", pattern);
+
+ if (loaded_any_symbols)
+ {
+ /* Getting new symbols may change our opinion about what is
+ frameless. */
+ reinit_frame_cache ();
+ }
+ }
+}
+
+/* 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)
+{
+ /* FIXME */
}
void
-_initialize_solib ()
+_initialize_xcoffsolib (void)
{
add_com ("sharedlibrary", class_files, sharedlibrary_command,
"Load shared object library symbols for files matching REGEXP.");
add_info ("sharedlibrary", solib_info,
"Status of loaded shared object libraries");
+
+ deprecated_add_show_from_set
+ (add_set_cmd ("auto-solib-add", class_support, var_boolean,
+ (char *) &auto_solib_add,
+ "Set autoloading of shared library symbols.\n\
+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);
}
projects / deliverable / binutils-gdb.git / blobdiff