#include "event-loop.h"
#include "thread-fsm.h"
#include "common/enum-flags.h"
+#include "progspace-and-thread.h"
+#include "common/gdb_optional.h"
+#include "arch-utils.h"
/* Prototypes for local functions */
-static void signals_info (char *, int);
+static void info_signals_command (char *, int);
static void handle_command (char *, int);
else
{
struct inferior *parent_inf, *child_inf;
- struct cleanup *old_chain;
/* Add process to GDB's tables. */
child_inf = add_inferior (ptid_get_pid (child_ptid));
child_inf->gdbarch = parent_inf->gdbarch;
copy_inferior_target_desc_info (child_inf, parent_inf);
- old_chain = save_inferior_ptid ();
- save_current_program_space ();
+ scoped_restore_current_pspace_and_thread restore_pspace_thread;
inferior_ptid = child_ptid;
add_thread (inferior_ptid);
+ set_current_inferior (child_inf);
child_inf->symfile_flags = SYMFILE_NO_READ;
/* If this is a vfork child, then the address-space is
required. */
solib_create_inferior_hook (0);
}
-
- do_cleanups (old_chain);
}
if (has_vforked)
inferior_ptid = child_ptid;
add_thread (inferior_ptid);
+ set_current_inferior (child_inf);
/* If this is a vfork child, then the address-space is shared
with the parent. If we detached from the parent, then we can
return 0;
}
+/* Save/restore inferior_ptid, current program space and current
+ inferior. Only use this if the current context points at an exited
+ inferior (and therefore there's no current thread to save). */
+class scoped_restore_exited_inferior
+{
+public:
+ scoped_restore_exited_inferior ()
+ : m_saved_ptid (&inferior_ptid)
+ {}
+
+private:
+ scoped_restore_tmpl<ptid_t> m_saved_ptid;
+ scoped_restore_current_program_space m_pspace;
+ scoped_restore_current_inferior m_inferior;
+};
+
/* Called whenever we notice an exec or exit event, to handle
detaching or resuming a vfork parent. */
if (inf->vfork_parent->pending_detach)
{
struct thread_info *tp;
- struct cleanup *old_chain;
struct program_space *pspace;
struct address_space *aspace;
inf->vfork_parent->pending_detach = 0;
+ gdb::optional<scoped_restore_exited_inferior>
+ maybe_restore_inferior;
+ gdb::optional<scoped_restore_current_pspace_and_thread>
+ maybe_restore_thread;
+
+ /* If we're handling a child exit, then inferior_ptid points
+ at the inferior's pid, not to a thread. */
if (!exec)
- {
- /* If we're handling a child exit, then inferior_ptid
- points at the inferior's pid, not to a thread. */
- old_chain = save_inferior_ptid ();
- save_current_program_space ();
- save_current_inferior ();
- }
+ maybe_restore_inferior.emplace ();
else
- old_chain = save_current_space_and_thread ();
+ maybe_restore_thread.emplace ();
/* We're letting loose of the parent. */
tp = any_live_thread_of_process (inf->vfork_parent->pid);
/* Put it back. */
inf->pspace = pspace;
inf->aspace = aspace;
-
- do_cleanups (old_chain);
}
else if (exec)
{
}
else
{
- struct cleanup *old_chain;
struct program_space *pspace;
/* If this is a vfork child exiting, then the pspace and
go ahead and create a new one for this exiting
inferior. */
- /* Switch to null_ptid, so that clone_program_space doesn't want
- to read the selected frame of a dead process. */
- old_chain = save_inferior_ptid ();
- inferior_ptid = null_ptid;
+ /* Switch to null_ptid while running clone_program_space, so
+ that clone_program_space doesn't want to read the
+ selected frame of a dead process. */
+ scoped_restore restore_ptid
+ = make_scoped_restore (&inferior_ptid, null_ptid);
/* This inferior is dead, so avoid giving the breakpoints
module the option to write through to it (cloning a
inf->pspace = pspace;
inf->aspace = pspace->aspace;
- /* Put back inferior_ptid. We'll continue mourning this
- inferior. */
- do_cleanups (old_chain);
-
resume_parent = inf->vfork_parent->pid;
/* Break the bonds. */
inf->vfork_parent->vfork_child = NULL;
{
/* If the user wanted the parent to be running, let it go
free now. */
- struct cleanup *old_chain = make_cleanup_restore_current_thread ();
+ scoped_restore_current_thread restore_thread;
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog,
resume_parent);
iterate_over_threads (proceed_after_vfork_done, &resume_parent);
-
- do_cleanups (old_chain);
}
}
}
/* Indicate that there is no cleanup pending. */
displaced->step_ptid = null_ptid;
- if (displaced->step_closure)
- {
- gdbarch_displaced_step_free_closure (displaced->step_gdbarch,
- displaced->step_closure);
- displaced->step_closure = NULL;
- }
+ xfree (displaced->step_closure);
+ displaced->step_closure = NULL;
}
static void
static int
displaced_step_prepare_throw (ptid_t ptid)
{
- struct cleanup *old_cleanups, *ignore_cleanups;
+ struct cleanup *ignore_cleanups;
struct thread_info *tp = find_thread_ptid (ptid);
struct regcache *regcache = get_thread_regcache (ptid);
struct gdbarch *gdbarch = get_regcache_arch (regcache);
displaced_step_clear (displaced);
- old_cleanups = save_inferior_ptid ();
+ scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid);
inferior_ptid = ptid;
original = regcache_read_pc (regcache);
"Stepping over breakpoint in-line instead.\n");
}
- do_cleanups (old_cleanups);
return -1;
}
/* The architecture doesn't know how or want to displaced step
this instruction or instruction sequence. Fallback to
stepping over the breakpoint in-line. */
- do_cleanups (old_cleanups);
+ do_cleanups (ignore_cleanups);
return -1;
}
discard_cleanups (ignore_cleanups);
- do_cleanups (old_cleanups);
-
if (debug_displaced)
fprintf_unfiltered (gdb_stdlog, "displaced: displaced pc to %s\n",
paddress (gdbarch, copy));
write_memory_ptid (ptid_t ptid, CORE_ADDR memaddr,
const gdb_byte *myaddr, int len)
{
- struct cleanup *ptid_cleanup = save_inferior_ptid ();
+ scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid);
inferior_ptid = ptid;
write_memory (memaddr, myaddr, len);
- do_cleanups (ptid_cleanup);
}
/* Restore the contents of the copy area for thread PTID. */
{
struct inferior *inf = current_inferior ();
ptid_t pid_ptid = pid_to_ptid (inf->pid);
- struct cleanup *old_chain_1;
struct displaced_step_inferior_state *displaced;
displaced = get_displaced_stepping_state (inf->pid);
fprintf_unfiltered (gdb_stdlog,
"displaced-stepping in-process while detaching");
- old_chain_1 = make_cleanup_restore_integer (&inf->detaching);
- inf->detaching = 1;
+ scoped_restore restore_detaching = make_scoped_restore (&inf->detaching, true);
while (!ptid_equal (displaced->step_ptid, null_ptid))
{
inferior, so this must mean the process is gone. */
if (!ecs->wait_some_more)
{
- discard_cleanups (old_chain_1);
+ restore_detaching.release ();
error (_("Program exited while detaching"));
}
}
- discard_cleanups (old_chain_1);
+ restore_detaching.release ();
}
/* Wait for control to return from inferior to debugger.
set_current_traceframe (-1);
}
+ gdb::optional<scoped_restore_current_thread> maybe_restore_thread;
+
if (non_stop)
/* In non-stop mode, the user/frontend should not notice a thread
switch due to internal events. Make sure we reverse to the
user selected thread and frame after handling the event and
running any breakpoint commands. */
- make_cleanup_restore_current_thread ();
+ maybe_restore_thread.emplace ();
overlay_cache_invalid = 1;
/* Flush target cache before starting to handle each event. Target
static int \
thread_stopped_by_ ## REASON (ptid_t ptid) \
{ \
- struct cleanup *old_chain; \
- int res; \
- \
- old_chain = save_inferior_ptid (); \
+ scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); \
inferior_ptid = ptid; \
\
- res = target_stopped_by_ ## REASON (); \
- \
- do_cleanups (old_chain); \
- \
- return res; \
+ return target_stopped_by_ ## REASON (); \
}
/* Generate thread_stopped_by_watchpoint. */
{
struct regcache *regcache = get_thread_regcache (ecs->ptid);
struct gdbarch *gdbarch = get_regcache_arch (regcache);
- struct cleanup *old_chain = save_inferior_ptid ();
+ scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid);
inferior_ptid = ecs->ptid;
fprintf_unfiltered (gdb_stdlog,
"infrun: (no data address available)\n");
}
-
- do_cleanups (old_chain);
}
/* This is originated from start_remote(), start_inferior() and
tmp_sal = find_pc_line (ecs->stop_func_start, 0);
if (tmp_sal.line != 0
&& !function_name_is_marked_for_skip (ecs->stop_func_name,
- &tmp_sal))
+ tmp_sal))
{
if (execution_direction == EXEC_REVERSE)
handle_step_into_function_backward (gdbarch, ecs);
cust = find_pc_compunit_symtab (stop_pc);
if (cust != NULL && compunit_language (cust) != language_asm)
- ecs->stop_func_start = gdbarch_skip_prologue (gdbarch,
- ecs->stop_func_start);
+ ecs->stop_func_start
+ = gdbarch_skip_prologue_noexcept (gdbarch, ecs->stop_func_start);
stop_func_sal = find_pc_line (ecs->stop_func_start, 0);
/* Use the step_resume_break to step until the end of the prologue,
cust = find_pc_compunit_symtab (stop_pc);
if (cust != NULL && compunit_language (cust) != language_asm)
- ecs->stop_func_start = gdbarch_skip_prologue (gdbarch,
- ecs->stop_func_start);
+ ecs->stop_func_start
+ = gdbarch_skip_prologue_noexcept (gdbarch, ecs->stop_func_start);
stop_func_sal = find_pc_line (stop_pc, 0);
static void
handle_command (char *args, int from_tty)
{
- char **argv;
int digits, wordlen;
int sigfirst, signum, siglast;
enum gdb_signal oursig;
int allsigs;
int nsigs;
unsigned char *sigs;
- struct cleanup *old_chain;
if (args == NULL)
{
/* Break the command line up into args. */
- argv = gdb_buildargv (args);
- old_chain = make_cleanup_freeargv (argv);
+ gdb_argv built_argv (args);
/* Walk through the args, looking for signal oursigs, signal names, and
actions. Signal numbers and signal names may be interspersed with
actions, with the actions being performed for all signals cumulatively
specified. Signal ranges can be specified as <LOW>-<HIGH>. */
- while (*argv != NULL)
+ for (char *arg : built_argv)
{
- wordlen = strlen (*argv);
- for (digits = 0; isdigit ((*argv)[digits]); digits++)
+ wordlen = strlen (arg);
+ for (digits = 0; isdigit (arg[digits]); digits++)
{;
}
allsigs = 0;
sigfirst = siglast = -1;
- if (wordlen >= 1 && !strncmp (*argv, "all", wordlen))
+ if (wordlen >= 1 && !strncmp (arg, "all", wordlen))
{
/* Apply action to all signals except those used by the
debugger. Silently skip those. */
sigfirst = 0;
siglast = nsigs - 1;
}
- else if (wordlen >= 1 && !strncmp (*argv, "stop", wordlen))
+ else if (wordlen >= 1 && !strncmp (arg, "stop", wordlen))
{
SET_SIGS (nsigs, sigs, signal_stop);
SET_SIGS (nsigs, sigs, signal_print);
}
- else if (wordlen >= 1 && !strncmp (*argv, "ignore", wordlen))
+ else if (wordlen >= 1 && !strncmp (arg, "ignore", wordlen))
{
UNSET_SIGS (nsigs, sigs, signal_program);
}
- else if (wordlen >= 2 && !strncmp (*argv, "print", wordlen))
+ else if (wordlen >= 2 && !strncmp (arg, "print", wordlen))
{
SET_SIGS (nsigs, sigs, signal_print);
}
- else if (wordlen >= 2 && !strncmp (*argv, "pass", wordlen))
+ else if (wordlen >= 2 && !strncmp (arg, "pass", wordlen))
{
SET_SIGS (nsigs, sigs, signal_program);
}
- else if (wordlen >= 3 && !strncmp (*argv, "nostop", wordlen))
+ else if (wordlen >= 3 && !strncmp (arg, "nostop", wordlen))
{
UNSET_SIGS (nsigs, sigs, signal_stop);
}
- else if (wordlen >= 3 && !strncmp (*argv, "noignore", wordlen))
+ else if (wordlen >= 3 && !strncmp (arg, "noignore", wordlen))
{
SET_SIGS (nsigs, sigs, signal_program);
}
- else if (wordlen >= 4 && !strncmp (*argv, "noprint", wordlen))
+ else if (wordlen >= 4 && !strncmp (arg, "noprint", wordlen))
{
UNSET_SIGS (nsigs, sigs, signal_print);
UNSET_SIGS (nsigs, sigs, signal_stop);
}
- else if (wordlen >= 4 && !strncmp (*argv, "nopass", wordlen))
+ else if (wordlen >= 4 && !strncmp (arg, "nopass", wordlen))
{
UNSET_SIGS (nsigs, sigs, signal_program);
}
SIGHUP, SIGINT, SIGALRM, etc. will work right anyway. */
sigfirst = siglast = (int)
- gdb_signal_from_command (atoi (*argv));
- if ((*argv)[digits] == '-')
+ gdb_signal_from_command (atoi (arg));
+ if (arg[digits] == '-')
{
siglast = (int)
- gdb_signal_from_command (atoi ((*argv) + digits + 1));
+ gdb_signal_from_command (atoi (arg + digits + 1));
}
if (sigfirst > siglast)
{
}
else
{
- oursig = gdb_signal_from_name (*argv);
+ oursig = gdb_signal_from_name (arg);
if (oursig != GDB_SIGNAL_UNKNOWN)
{
sigfirst = siglast = (int) oursig;
else
{
/* Not a number and not a recognized flag word => complain. */
- error (_("Unrecognized or ambiguous flag word: \"%s\"."), *argv);
+ error (_("Unrecognized or ambiguous flag word: \"%s\"."), arg);
}
}
break;
}
}
-
- argv++;
}
for (signum = 0; signum < nsigs; signum++)
break;
}
-
- do_cleanups (old_chain);
}
/* Complete the "handle" command. */
-static VEC (char_ptr) *
+static void
handle_completer (struct cmd_list_element *ignore,
+ completion_tracker &tracker,
const char *text, const char *word)
{
- VEC (char_ptr) *vec_signals, *vec_keywords, *return_val;
static const char * const keywords[] =
{
"all",
NULL,
};
- vec_signals = signal_completer (ignore, text, word);
- vec_keywords = complete_on_enum (keywords, word, word);
-
- return_val = VEC_merge (char_ptr, vec_signals, vec_keywords);
- VEC_free (char_ptr, vec_signals);
- VEC_free (char_ptr, vec_keywords);
- return return_val;
+ signal_completer (ignore, tracker, text, word);
+ complete_on_enum (tracker, keywords, word, word);
}
enum gdb_signal
targets, all signals should be in the signal tables). */
static void
-signals_info (char *signum_exp, int from_tty)
+info_signals_command (char *signum_exp, int from_tty)
{
enum gdb_signal oursig;
xfree (inf_status);
}
\f
-/* restore_inferior_ptid() will be used by the cleanup machinery
- to restore the inferior_ptid value saved in a call to
- save_inferior_ptid(). */
-
-static void
-restore_inferior_ptid (void *arg)
-{
- ptid_t *saved_ptid_ptr = (ptid_t *) arg;
-
- inferior_ptid = *saved_ptid_ptr;
- xfree (arg);
-}
-
-/* Save the value of inferior_ptid so that it may be restored by a
- later call to do_cleanups(). Returns the struct cleanup pointer
- needed for later doing the cleanup. */
-
-struct cleanup *
-save_inferior_ptid (void)
-{
- ptid_t *saved_ptid_ptr = XNEW (ptid_t);
-
- *saved_ptid_ptr = inferior_ptid;
- return make_cleanup (restore_inferior_ptid, saved_ptid_ptr);
-}
-
/* See infrun.h. */
void
infrun_async_inferior_event_token
= create_async_event_handler (infrun_async_inferior_event_handler, NULL);
- add_info ("signals", signals_info, _("\
+ add_info ("signals", info_signals_command, _("\
What debugger does when program gets various signals.\n\
Specify a signal as argument to print info on that signal only."));
add_info_alias ("handle", "signals", 0);
projects / deliverable / binutils-gdb.git / blobdiff