/* General utility routines for GDB, the GNU debugger.
Copyright (C) 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
- 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
+ 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
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 2 of the License, or
+ 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,
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, write to the Free Software
- Foundation, Inc., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "gdb_assert.h"
#include "gdb_string.h"
#include "event-top.h"
#include "exceptions.h"
+#include "gdbthread.h"
#ifdef TUI
#include "tui/tui.h" /* For tui_get_command_dimension. */
#include "filenames.h"
#include "symfile.h"
#include "gdb_obstack.h"
+#include "gdbcore.h"
#include "top.h"
#include "inferior.h" /* for signed_pointer_to_address */
#include "readline/readline.h"
+#include <sys/time.h>
+#include <time.h>
+
#if !HAVE_DECL_MALLOC
extern PTR malloc (); /* OK: PTR */
#endif
static void set_screen_size (void);
static void set_width (void);
+/* A flag indicating whether to timestamp debugging messages. */
+
+static int debug_timestamp = 0;
+
/* Chain of cleanup actions established with make_cleanup,
to be executed if an error happens. */
static struct cleanup *cleanup_chain; /* cleaned up after a failed command */
static struct cleanup *final_cleanup_chain; /* cleaned up when gdb exits */
-static struct cleanup *run_cleanup_chain; /* cleaned up on each 'run' */
-static struct cleanup *exec_cleanup_chain; /* cleaned up on each execution command */
-/* cleaned up on each error from within an execution command */
-static struct cleanup *exec_error_cleanup_chain;
-
-/* Pointer to what is left to do for an execution command after the
- target stops. Used only in asynchronous mode, by targets that
- support async execution. The finish and until commands use it. So
- does the target extended-remote command. */
-struct continuation *cmd_continuation;
-struct continuation *intermediate_continuation;
/* Nonzero if we have job control. */
}
struct cleanup *
-make_final_cleanup (make_cleanup_ftype *function, void *arg)
-{
- return make_my_cleanup (&final_cleanup_chain, function, arg);
-}
-
-struct cleanup *
-make_run_cleanup (make_cleanup_ftype *function, void *arg)
+make_cleanup_dtor (make_cleanup_ftype *function, void *arg,
+ void (*dtor) (void *))
{
- return make_my_cleanup (&run_cleanup_chain, function, arg);
+ return make_my_cleanup2 (&cleanup_chain,
+ function, arg, dtor);
}
struct cleanup *
-make_exec_cleanup (make_cleanup_ftype *function, void *arg)
-{
- return make_my_cleanup (&exec_cleanup_chain, function, arg);
-}
-
-struct cleanup *
-make_exec_error_cleanup (make_cleanup_ftype *function, void *arg)
+make_final_cleanup (make_cleanup_ftype *function, void *arg)
{
- return make_my_cleanup (&exec_error_cleanup_chain, function, arg);
+ return make_my_cleanup (&final_cleanup_chain, function, arg);
}
static void
{
int *fd = arg;
close (*fd);
- xfree (fd);
}
struct cleanup *
{
int *saved_fd = xmalloc (sizeof (fd));
*saved_fd = fd;
- return make_cleanup (do_close_cleanup, saved_fd);
+ return make_cleanup_dtor (do_close_cleanup, saved_fd, xfree);
+}
+
+/* Helper function which does the work for make_cleanup_fclose. */
+
+static void
+do_fclose_cleanup (void *arg)
+{
+ FILE *file = arg;
+ fclose (arg);
+}
+
+/* Return a new cleanup that closes FILE. */
+
+struct cleanup *
+make_cleanup_fclose (FILE *file)
+{
+ return make_cleanup (do_fclose_cleanup, file);
}
static void
return make_my_cleanup (&cleanup_chain, do_free_section_addr_info, addrs);
}
+struct restore_integer_closure
+{
+ int *variable;
+ int value;
+};
+
+static void
+restore_integer (void *p)
+{
+ struct restore_integer_closure *closure = p;
+ *(closure->variable) = closure->value;
+}
+/* Remember the current value of *VARIABLE and make it restored when the cleanup
+ is run. */
struct cleanup *
-make_my_cleanup (struct cleanup **pmy_chain, make_cleanup_ftype *function,
- void *arg)
+make_cleanup_restore_integer (int *variable)
+{
+ struct restore_integer_closure *c =
+ xmalloc (sizeof (struct restore_integer_closure));
+ c->variable = variable;
+ c->value = *variable;
+
+ return make_my_cleanup2 (&cleanup_chain, restore_integer, (void *)c,
+ xfree);
+}
+
+struct cleanup *
+make_my_cleanup2 (struct cleanup **pmy_chain, make_cleanup_ftype *function,
+ void *arg, void (*free_arg) (void *))
{
struct cleanup *new
= (struct cleanup *) xmalloc (sizeof (struct cleanup));
new->next = *pmy_chain;
new->function = function;
+ new->free_arg = free_arg;
new->arg = arg;
*pmy_chain = new;
return old_chain;
}
+struct cleanup *
+make_my_cleanup (struct cleanup **pmy_chain, make_cleanup_ftype *function,
+ void *arg)
+{
+ return make_my_cleanup2 (pmy_chain, function, arg, NULL);
+}
+
/* Discard cleanups and do the actions they describe
until we get back to the point OLD_CHAIN in the cleanup_chain. */
do_my_cleanups (&final_cleanup_chain, old_chain);
}
-void
-do_run_cleanups (struct cleanup *old_chain)
-{
- do_my_cleanups (&run_cleanup_chain, old_chain);
-}
-
-void
-do_exec_cleanups (struct cleanup *old_chain)
-{
- do_my_cleanups (&exec_cleanup_chain, old_chain);
-}
-
-void
-do_exec_error_cleanups (struct cleanup *old_chain)
-{
- do_my_cleanups (&exec_error_cleanup_chain, old_chain);
-}
-
static void
do_my_cleanups (struct cleanup **pmy_chain,
struct cleanup *old_chain)
{
*pmy_chain = ptr->next; /* Do this first incase recursion */
(*ptr->function) (ptr->arg);
+ if (ptr->free_arg)
+ (*ptr->free_arg) (ptr->arg);
xfree (ptr);
}
}
discard_my_cleanups (&final_cleanup_chain, old_chain);
}
-void
-discard_exec_error_cleanups (struct cleanup *old_chain)
-{
- discard_my_cleanups (&exec_error_cleanup_chain, old_chain);
-}
-
void
discard_my_cleanups (struct cleanup **pmy_chain,
struct cleanup *old_chain)
while ((ptr = *pmy_chain) != old_chain)
{
*pmy_chain = ptr->next;
+ if (ptr->free_arg)
+ (*ptr->free_arg) (ptr->arg);
xfree (ptr);
}
}
{
}
-/* Add a continuation to the continuation list, the global list
- cmd_continuation. The new continuation will be added at the front.*/
+/* Continuations are implemented as cleanups internally. Inherit from
+ cleanups. */
+struct continuation
+{
+ struct cleanup base;
+};
+
+/* Add a continuation to the continuation list of THREAD. The new
+ continuation will be added at the front. */
void
-add_continuation (void (*continuation_hook) (struct continuation_arg *),
- struct continuation_arg *arg_list)
+add_continuation (struct thread_info *thread,
+ void (*continuation_hook) (void *), void *args,
+ void (*continuation_free_args) (void *))
{
- struct continuation *continuation_ptr;
+ struct cleanup *as_cleanup = &thread->continuations->base;
+ make_cleanup_ftype *continuation_hook_fn = continuation_hook;
+
+ make_my_cleanup2 (&as_cleanup,
+ continuation_hook_fn,
+ args,
+ continuation_free_args);
- continuation_ptr =
- (struct continuation *) xmalloc (sizeof (struct continuation));
- continuation_ptr->continuation_hook = continuation_hook;
- continuation_ptr->arg_list = arg_list;
- continuation_ptr->next = cmd_continuation;
- cmd_continuation = continuation_ptr;
+ thread->continuations = (struct continuation *) as_cleanup;
}
-/* Walk down the cmd_continuation list, and execute all the
- continuations. There is a problem though. In some cases new
- continuations may be added while we are in the middle of this
- loop. If this happens they will be added in the front, and done
- before we have a chance of exhausting those that were already
- there. We need to then save the beginning of the list in a pointer
- and do the continuations from there on, instead of using the
- global beginning of list as our iteration pointer. */
+/* Add a continuation to the continuation list of INFERIOR. The new
+ continuation will be added at the front. */
+
void
-do_all_continuations (void)
+add_inferior_continuation (void (*continuation_hook) (void *), void *args,
+ void (*continuation_free_args) (void *))
+{
+ struct inferior *inf = current_inferior ();
+ struct cleanup *as_cleanup = &inf->continuations->base;
+ make_cleanup_ftype *continuation_hook_fn = continuation_hook;
+
+ make_my_cleanup2 (&as_cleanup,
+ continuation_hook_fn,
+ args,
+ continuation_free_args);
+
+ inf->continuations = (struct continuation *) as_cleanup;
+}
+
+/* Do all continuations of the current inferior. */
+
+void
+do_all_inferior_continuations (void)
{
- struct continuation *continuation_ptr;
- struct continuation *saved_continuation;
+ struct cleanup *old_chain;
+ struct cleanup *as_cleanup;
+ struct inferior *inf = current_inferior ();
+
+ if (inf->continuations == NULL)
+ return;
/* Copy the list header into another pointer, and set the global
list header to null, so that the global list can change as a side
- effect of invoking the continuations and the processing of
- the preexisting continuations will not be affected. */
- continuation_ptr = cmd_continuation;
- cmd_continuation = NULL;
+ effect of invoking the continuations and the processing of the
+ preexisting continuations will not be affected. */
+
+ as_cleanup = &inf->continuations->base;
+ inf->continuations = NULL;
/* Work now on the list we have set aside. */
- while (continuation_ptr)
- {
- (continuation_ptr->continuation_hook) (continuation_ptr->arg_list);
- saved_continuation = continuation_ptr;
- continuation_ptr = continuation_ptr->next;
- xfree (saved_continuation);
- }
+ do_my_cleanups (&as_cleanup, NULL);
}
-/* Walk down the cmd_continuation list, and get rid of all the
- continuations. */
+/* Get rid of all the inferior-wide continuations of INF. */
+
void
-discard_all_continuations (void)
+discard_all_inferior_continuations (struct inferior *inf)
{
- struct continuation *continuation_ptr;
+ struct cleanup *continuation_ptr = &inf->continuations->base;
+ discard_my_cleanups (&continuation_ptr, NULL);
+ inf->continuations = NULL;
+}
- while (cmd_continuation)
- {
- continuation_ptr = cmd_continuation;
- cmd_continuation = continuation_ptr->next;
- xfree (continuation_ptr);
- }
+static void
+restore_thread_cleanup (void *arg)
+{
+ ptid_t *ptid_p = arg;
+ switch_to_thread (*ptid_p);
}
-/* Add a continuation to the continuation list, the global list
- intermediate_continuation. The new continuation will be added at
- the front. */
+/* Walk down the continuation list of PTID, and execute all the
+ continuations. There is a problem though. In some cases new
+ continuations may be added while we are in the middle of this loop.
+ If this happens they will be added in the front, and done before we
+ have a chance of exhausting those that were already there. We need
+ to then save the beginning of the list in a pointer and do the
+ continuations from there on, instead of using the global beginning
+ of list as our iteration pointer. */
+static void
+do_all_continuations_ptid (ptid_t ptid,
+ struct continuation **continuations_p)
+{
+ struct cleanup *old_chain;
+ ptid_t current_thread;
+ struct cleanup *as_cleanup;
+
+ if (*continuations_p == NULL)
+ return;
+
+ current_thread = inferior_ptid;
+
+ /* Restore selected thread on exit. Don't try to restore the frame
+ as well, because:
+
+ - When running continuations, the selected frame is always #0.
+
+ - The continuations may trigger symbol file loads, which may
+ change the frame layout (frame ids change), which would trigger
+ a warning if we used make_cleanup_restore_current_thread. */
+
+ old_chain = make_cleanup (restore_thread_cleanup, ¤t_thread);
+
+ /* Let the continuation see this thread as selected. */
+ switch_to_thread (ptid);
+
+ /* Copy the list header into another pointer, and set the global
+ list header to null, so that the global list can change as a side
+ effect of invoking the continuations and the processing of the
+ preexisting continuations will not be affected. */
+
+ as_cleanup = &(*continuations_p)->base;
+ *continuations_p = NULL;
+
+ /* Work now on the list we have set aside. */
+ do_my_cleanups (&as_cleanup, NULL);
+
+ do_cleanups (old_chain);
+}
+
+/* Callback for iterate over threads. */
+static int
+do_all_continuations_thread_callback (struct thread_info *thread, void *data)
+{
+ do_all_continuations_ptid (thread->ptid, &thread->continuations);
+ return 0;
+}
+
+/* Do all continuations of thread THREAD. */
void
-add_intermediate_continuation (void (*continuation_hook)
- (struct continuation_arg *),
- struct continuation_arg *arg_list)
+do_all_continuations_thread (struct thread_info *thread)
{
- struct continuation *continuation_ptr;
+ do_all_continuations_thread_callback (thread, NULL);
+}
+
+/* Do all continuations of all threads. */
+void
+do_all_continuations (void)
+{
+ iterate_over_threads (do_all_continuations_thread_callback, NULL);
+}
- continuation_ptr =
- (struct continuation *) xmalloc (sizeof (struct continuation));
- continuation_ptr->continuation_hook = continuation_hook;
- continuation_ptr->arg_list = arg_list;
- continuation_ptr->next = intermediate_continuation;
- intermediate_continuation = continuation_ptr;
+/* Callback for iterate over threads. */
+static int
+discard_all_continuations_thread_callback (struct thread_info *thread,
+ void *data)
+{
+ struct cleanup *continuation_ptr = &thread->continuations->base;
+ discard_my_cleanups (&continuation_ptr, NULL);
+ thread->continuations = NULL;
+ return 0;
+}
+
+/* Get rid of all the continuations of THREAD. */
+void
+discard_all_continuations_thread (struct thread_info *thread)
+{
+ discard_all_continuations_thread_callback (thread, NULL);
+}
+
+/* Get rid of all the continuations of all threads. */
+void
+discard_all_continuations (void)
+{
+ iterate_over_threads (discard_all_continuations_thread_callback, NULL);
+}
+
+
+/* Add a continuation to the intermediate continuation list of THREAD.
+ The new continuation will be added at the front. */
+void
+add_intermediate_continuation (struct thread_info *thread,
+ void (*continuation_hook)
+ (void *), void *args,
+ void (*continuation_free_args) (void *))
+{
+ struct cleanup *as_cleanup = &thread->intermediate_continuations->base;
+ make_cleanup_ftype *continuation_hook_fn = continuation_hook;
+
+ make_my_cleanup2 (&as_cleanup,
+ continuation_hook_fn,
+ args,
+ continuation_free_args);
+
+ thread->intermediate_continuations = (struct continuation *) as_cleanup;
}
/* Walk down the cmd_continuation list, and execute all the
there. We need to then save the beginning of the list in a pointer
and do the continuations from there on, instead of using the
global beginning of list as our iteration pointer.*/
+static int
+do_all_intermediate_continuations_thread_callback (struct thread_info *thread,
+ void *data)
+{
+ do_all_continuations_ptid (thread->ptid,
+ &thread->intermediate_continuations);
+ return 0;
+}
+
+/* Do all intermediate continuations of thread THREAD. */
+void
+do_all_intermediate_continuations_thread (struct thread_info *thread)
+{
+ do_all_intermediate_continuations_thread_callback (thread, NULL);
+}
+
+/* Do all intermediate continuations of all threads. */
void
do_all_intermediate_continuations (void)
{
- struct continuation *continuation_ptr;
- struct continuation *saved_continuation;
+ iterate_over_threads (do_all_intermediate_continuations_thread_callback, NULL);
+}
- /* Copy the list header into another pointer, and set the global
- list header to null, so that the global list can change as a side
- effect of invoking the continuations and the processing of
- the preexisting continuations will not be affected. */
- continuation_ptr = intermediate_continuation;
- intermediate_continuation = NULL;
+/* Callback for iterate over threads. */
+static int
+discard_all_intermediate_continuations_thread_callback (struct thread_info *thread,
+ void *data)
+{
+ struct cleanup *continuation_ptr = &thread->intermediate_continuations->base;
+ discard_my_cleanups (&continuation_ptr, NULL);
+ thread->intermediate_continuations = NULL;
+ return 0;
+}
- /* Work now on the list we have set aside. */
- while (continuation_ptr)
- {
- (continuation_ptr->continuation_hook) (continuation_ptr->arg_list);
- saved_continuation = continuation_ptr;
- continuation_ptr = continuation_ptr->next;
- xfree (saved_continuation);
- }
+/* Get rid of all the intermediate continuations of THREAD. */
+void
+discard_all_intermediate_continuations_thread (struct thread_info *thread)
+{
+ discard_all_intermediate_continuations_thread_callback (thread, NULL);
}
-/* Walk down the cmd_continuation list, and get rid of all the
- continuations. */
+/* Get rid of all the intermediate continuations of all threads. */
void
discard_all_intermediate_continuations (void)
{
- struct continuation *continuation_ptr;
-
- while (intermediate_continuation)
- {
- continuation_ptr = intermediate_continuation;
- intermediate_continuation = continuation_ptr->next;
- xfree (continuation_ptr);
- }
+ iterate_over_threads (discard_all_intermediate_continuations_thread_callback, NULL);
}
\f
rows = INT_MAX;
if (cols <= 0)
- rl_get_screen_size (NULL, &cols);
+ cols = INT_MAX;
/* Update Readline's idea of the terminal size. */
rl_set_screen_size (rows, cols);
linebuffer = xstrvprintf (format, args);
old_cleanups = make_cleanup (xfree, linebuffer);
+ if (debug_timestamp && stream == gdb_stdlog)
+ {
+ struct timeval tm;
+ char *timestamp;
+
+ gettimeofday (&tm, NULL);
+ timestamp = xstrprintf ("%ld:%ld ", (long) tm.tv_sec, (long) tm.tv_usec);
+ make_cleanup (xfree, timestamp);
+ fputs_unfiltered (timestamp, stream);
+ }
fputs_unfiltered (linebuffer, stream);
do_cleanups (old_cleanups);
}
{
pagination_enabled = 0;
}
+
+static void
+show_debug_timestamp (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file, _("Timestamping debugging messages is %s.\n"), value);
+}
\f
void
NULL,
show_asm_demangle,
&setprintlist, &showprintlist);
+
+ add_setshow_boolean_cmd ("timestamp", class_maintenance,
+ &debug_timestamp, _("\
+Set timestamping of debugging messages."), _("\
+Show timestamping of debugging messages."), _("\
+When set, debugging messages will be marked with seconds and microseconds."),
+ NULL,
+ show_debug_timestamp,
+ &setdebuglist, &showdebuglist);
}
/* Machine specific function to handle SIGWINCH signal. */
int
strlen_paddr (void)
{
- return (TARGET_ADDR_BIT / 8 * 2);
+ return (gdbarch_addr_bit (current_gdbarch) / 8 * 2);
}
char *
paddr (CORE_ADDR addr)
{
- return phex (addr, TARGET_ADDR_BIT / 8);
+ return phex (addr, gdbarch_addr_bit (current_gdbarch) / 8);
}
char *
paddr_nz (CORE_ADDR addr)
{
- return phex_nz (addr, TARGET_ADDR_BIT / 8);
+ return phex_nz (addr, gdbarch_addr_bit (current_gdbarch) / 8);
}
const char *
either zero or sign extended. Should gdbarch_address_to_pointer or
some ADDRESS_TO_PRINTABLE() be used to do the conversion? */
- int addr_bit = TARGET_ADDR_BIT;
+ int addr_bit = gdbarch_addr_bit (current_gdbarch);
if (addr_bit < (sizeof (CORE_ADDR) * HOST_CHAR_BIT))
addr &= ((CORE_ADDR) 1 << addr_bit) - 1;
}
char *
-paddr_u (CORE_ADDR addr)
+pulongest (ULONGEST u)
{
- return decimal2str ("", addr, 0);
+ return decimal2str ("", u, 0);
}
char *
-paddr_d (LONGEST addr)
+plongest (LONGEST l)
{
- if (addr < 0)
- return decimal2str ("-", -addr, 0);
+ if (l < 0)
+ return decimal2str ("-", -l, 0);
else
- return decimal2str ("", addr, 0);
+ return decimal2str ("", l, 0);
}
/* Eliminate warning from compiler on 32-bit systems. */
CORE_ADDR
string_to_core_addr (const char *my_string)
{
+ int addr_bit = gdbarch_addr_bit (current_gdbarch);
CORE_ADDR addr = 0;
+
if (my_string[0] == '0' && tolower (my_string[1]) == 'x')
{
/* Assume that it is in hex. */
else
error (_("invalid hex \"%s\""), my_string);
}
+
+ /* Not very modular, but if the executable format expects
+ addresses to be sign-extended, then do so if the address was
+ specified with only 32 significant bits. Really this should
+ be determined by the target architecture, not by the object
+ file. */
+ if (i - 2 == addr_bit / 4
+ && exec_bfd
+ && bfd_get_sign_extend_vma (exec_bfd))
+ addr = (addr ^ ((CORE_ADDR) 1 << (addr_bit - 1)))
+ - ((CORE_ADDR) 1 << (addr_bit - 1));
}
else
{
error (_("invalid decimal \"%s\""), my_string);
}
}
+
return addr;
}
+const char *
+host_address_to_string (const void *addr)
+{
+ char *str = get_cell ();
+ sprintf (str, "0x%lx", (unsigned long) addr);
+ return str;
+}
+
char *
gdb_realpath (const char *filename)
{
dirname[base - filename] = '\0';
return dirname;
}
+
+/* Call libiberty's buildargv, and return the result.
+ If buildargv fails due to out-of-memory, call nomem.
+ Therefore, the returned value is guaranteed to be non-NULL,
+ unless the parameter itself is NULL. */
+
+char **
+gdb_buildargv (const char *s)
+{
+ char **argv = buildargv (s);
+ if (s != NULL && argv == NULL)
+ nomem (0);
+ return argv;
+}
projects / binutils-gdb.git / blobdiff